Tungsten Carbide Seal Ring Polishing Machine Main Technical Parameters
1. Grinding / polishing disc size (mm): φ640mm × φ235mm × 30mm
2. Cruise parameters:
Imperial: teeth Z = 108 DP = 12 α = 20 °
Metric: Number of teeth Z = 114 M = 2 α = 20 °
3. Cruise Quantity: 5
4. Minimum grinding / polishing Thickness: 0.15mm
5. Maximum grinding / polishing Thickness: 40mm
6. ideal for grinding / polishing Diameter: φ75/20 tablets
7. Maximum diameter polishing: φ150 mm
8. Under the grinding / polishing speed: 0 ~ 56rpm
Tungsten carbide seal ring technology requirements for the following four areas:
1. blank carbide grade used and the physical and mechanical properties and meet the relevant standards of gold corresponding provisions of the standard;
2. Out rough edges off angle depth of not more than 0.33mm;
3. There shall be no rough surface peeling, bubbling, delamination, cracking, porosity, burnt, burnt due to defects;
4. Rough section organization should be uniform, not a black heart, bubbles, delamination, cracking, severe carburizing, decarbonization and not good pressure and other defects.
Tungsten carbide seal ring with high hardness, wear resistance, strength and toughness, heat resistance, corrosion resistance and a series of excellent performance, especially its high hardness and wear resistance, even at a temperature of 500 ℃ also remained unchanged at 1000 ℃ still very high hardness. Carbide is widely used as a tool material, such as turning, milling, planer, drill, boring knife, for cutting cast iron, nonferrous metals, plastics, chemical fiber, graphite, glass, stone and ordinary steel can also be used to cut difficult to machine materials resistant steel, stainless steel, high manganese steel, tool steel. New carbide cutting tools carbon steel equal number of times.
Tungsten carbide seal ring erosion most common way is tantamount to the above three categories:
1. Back Flushing
Is back flushing chamber is sealed to the media carbide seal ring leads to the pump outlet end, carbide seal ring flush sealed cavity older media from time to time, to avoid the media particles, impurities, heavy lake, the conflict are Chi Gong damage.
2. Wash Itself
It refers to non-media or from the pump inlet to introduce under the pressure side, rinse conflict between being first access into the pump chamber. The most simple way to flush itself, but only compared to the situation with the media being noisy.
3. External Flush
Is another set of fluid system, the temperature is below the sealing medium into the sealed chamber for flushing only require flushing fluid into the selected medium does not affect product quality.
Tungsten carbide seal rings to answer not only the rare few, but the low quality of the end. Portable grinding machine seat seal inside. To ensure the recovery carbide seal ring on the square being cemented carbide has state. In lathe with a four-card retainer to the valve port and off-axis hole core, while the end of the reamer. Car made two rings (1Gr18Ni9Ti) set in reaming outside. Ensuring that it is no displacement of the central state, the ability to crank with precision and reasonable and in the mating surfaces welded so they can not move, then dug welding valve head with carbide D547 molybdenum electrodes, according to the seat in front of the hole grind with repair seal in the valve head.
The high-quality tungsten carbide seal ring medium containing suspended particles, the wear on the sealing ring is very serious, which requires the production of wear-resistant material sealing ring. This sealing ring is usually produced using chrome steel, carbon tool steel, bearing steel, high chrome cast iron and other materials, the shorter its life. Tungsten carbide with high hardness and strength, good wear resistance, long life with its sealing ring made of, but the downside is brittle carbide, machining difficulties. As we all know, the process is generally the production of carbide with a good compression molding material at room temperature, and then the high-temperature firing. As the ring deformation is large, usually used to increase production to reduce the thickness of the ring deformation, not only multi-material, and post-processing required for a long time, so the price is expensive ring firing at high temperatures, which generally do not use hard alloy materials to do the sealing ring.
Tungsten carbide mechanical seal ring is a high hardness refractory metal carbides (WC, TiC) as a main component micron powder, cobalt (Co) or nickel (Ni), molybdenum (Mo) as a binder in vacuo furnace or hydrogen reduction furnace sintering powder metallurgy products. Besides carbon atom, a nitrogen atom, a boron atom can enter the gap in the metal lattice, the solid solution is formed between the charge. They are similar in nature between the filling and the carbide can conductivity, thermal conductivity, high melting point, high hardness, brittleness is also large. Carbide seal rings can also be used to make drilling tools, mining tools, drilling tools, measuring tools, wear parts, metal grinding, cylinder liners, precision bearings, nozzles.
Tungsten carbide due to the high hardness, low thermal conductivity, as well friction materials are widely used in the manufacture of various types under various conditions of the sealing ring, often used as a sealing ring hardware. However, due to the brittle carbide and high prices, in order to save costs and ensure the mechanical strength of the seal ring, often using carbide inserts mounted in place of solid carbide ring. Tungsten carbide ring seat inserts and inserts carbide rings mounted using interference connection. Interference connection to select the amount of interference is directly related to the sealing performance is good or bad, if the amount of interference is too small, it will cause the seal ring and seat relative rotation and detachment, as well as leakage of hydraulic and pneumatic seals medium; If the amount of interference too much will cause plastic deformation or fracture sealing ring.
A light gradient carbide seal ring and a manufacturing method is characterized by the seal ring by the working and non-working parts composed of parts; 90-94% by weight of the working portion of the tungsten carbide, 6-10% by weight of nickel or cobalt composition, thickness of 1.0-2.5mm; inoperative portion of 40-60% by weight of titanium carbide powder, 10 to 18% by weight of nickel powder, 22-50% by weight of tungsten carbide powder composition; pressed, the first weighing work area with a carbide materials, including adding steel in the flat, and then weighing the non-working parts with lightweight alloy material, including adding steel in flat, pressure pressing, sintering and then placed in a furnace, get two different components of the gradient cemented carbide seal ring.
In addition to the welding industry think, grinding process, quality is the most important part of the tungsten carbide saw the quality of the pros and cons. Recommended lug, wire high-frequency welding, depending on the processing conditions recommended by the appropriate grades: for hard wood, recycled wood and special JX5 grade aluminum; apply to plywood, MDF and laminated board dedicated JX35 grades; applicable dedicated JX40 grades of steel; addition to ordinary wood cutting with a YG8, YG6 other brands. Otherwise JX9, dedicated professional with nails and rock cutting. JX9: Density 14.5 g / cm ³ ~ 15.0g/cm ³, hardness greater than or equal 90.5HRA, flexural strength greater than or equal to 2,000, we recommend using a high-frequency welding.
Tungsten carbide saw inspection rules and test methods shall meet the requirements of GB 5242.
Signs, packaging, transportation and storage: tungsten carbide saw per 1Kg with plastic bottles, cardboard box in a dry, plugged with paper or cotton, placed in the carton boxes, plastic or boxed good , placed in cardboard boxes. Carton weight of not more than 30Kg.
Each box should be pasted on the factory label stating the product brands, models, lot number and net weight. When product transportation should prevent moisture not violent collision. Products should be stored in a dry, acid, alkali atmosphere of the place, to prevent corrosion. Product storage period should not exceed one year, one year after the product discoloration should be reprocessed before use.
Tungsten carbide saw blade has excellent properties of high hardness, wear resistance, high temperature, etc., are widely used in industry, hacksaw, high hardness can be used for cutting all kinds of cast iron, stone and steel, difficult to machine materials. The specifications of many consistent serrated carbide steel sheet welded to the dense body of the saw, can significantly increase the service life of the cutting speed and the saw.
1. for hard wood, recycled wood and aluminum special carbide cutting blade.
2. suitable for plywood, MDF and laminated board dedicated carbide cutting blade.
3. for a special carbide steel cutting saws.
Serrated blade with carbide wear tests conducted, MDF cutting object by measuring the wear of the tip of the microscope, were measured to analyze the main parameters of the law of wear with blunt cut length variation results show, negative clearance C, C1, shortening edge a a, the flank wear width E1, front flank wear MY, Ma flank wear parameters are increased with increasing length of the cutting, the flank wear of the sawtooth the former is much larger than flank wear; addition, blunt head wear obviously experienced in the early stages of wear and normal wear stage. Carbide circular saw blades significant advantages, widely used.
1, the frequency of 100KHZ-1.1MHZ, can effectively control the hardening depth, small pieces of the heating filaments Parts particularly suitable;
2, using IGBT power devices, the device operating frequency up to 500KHZ, advanced control technology, original;
3,100% duty cycle, maximum power, 24-hour operation;
4, with a constant current / constant power control function, higher heating efficiency;
5, the output power, frequency, current full display;
6, the installation is simple, just take electricity and water can be used, without someone to install;
7, small, space-saving installation and easy maintenance;
8, can be adjusted automatically controlled heating, power and time insulation process, help to improve the quality of the repetitive heating and simplify workers to operate;
Serrated carbide saw blade angle is in the cutting position. Serrated cutting angle affects the performance results. Greatest impact is on the cutting rake angle γ, the angle α, wedge angle β. Rake angle γ is serrated cutting edge angle, the greater the cutting rake angle more brisk, rake angle generally between 10-15 ℃. After the angle is the angle between the machined surface of the sawtooth between its role is to prevent the serrations machined friction surface, the smaller the angle the greater the friction, the more smooth the processing products. After the general value of carbide saw blade angle 15 ℃. Wedge angle is derived from the anterior horn and posterior horn out. But the wedge angle is not too small, it plays a role in keeping the teeth, according to strength, heat resistance, durability degrees. Rake angle γ, the angle α, the wedge angle β three equals 90 ℃.
Tooth carbide metal cutting circular saw blades workpieces, in particular to a machine serrated clip-carbide blanks. Includes a body, a fixed intermediate position of the blank with a counterbore hole, the bottom surface of the gear housing is provided with positioning projections with recesses, through the body of the fixing holes and fastening screws, and the positioning projection Tower block in vitro with teeth on the circumference of the disc-shaped connecting piece blade fixed; said body top with radial clearance angle for machining and tangential clearance angle of the body aside.
TA Carbide rough serrated further characterized by said positioning projection may be shaped retaining projection platform, or arc-shaped positioning projections or triangular positioning block; step, the radial relief angle machining and tangential clearance angle of the body is in the range reserved for the top body, 1/2-1/3 total length, a width of 1-3 mm in the direction of the widening part; further, the body is provided with a top after working angle to the flank of the sawtooth reserved body; further, the rear corner at the top of the blank body aside, over a length of 4-6 mm from the edge of the thickened portion of 0.5-1 meters halo.
Machine clip-carbide blanks serrated utility model welding process aimed at resolving existing welded serrated blade with existing multi-piece body annealing effect, reducing its strength and hardness, repeated welding will affect their performance, with the repair needed dedicated high-frequency welding, if interrupted several serrated blade during use, the entire blade will be scrapped, and increase their cost; conventional blade blanks generally approximate rectangular shape, radial clearance angle and cut in the clearance angle of the grinding process, the path length of the grinding wheel consumes large long processing time, greatly reducing the efficiency of the grinding blade problem and provide an easy replacement processing cost savings serrated blade machine clip-serrated carbide blanks.
Machine clip-carbide blanks refers to existing carbide teeth serrated saw blade on the blade body mostly serrated blade welded carbide blanks, then after grinding molding. The disadvantage of this blade is: multi-piece body having a welding process annealing effect, reducing its strength and hardness, repeated itself will affect the performance of the welding, with a special need for the repair of high-frequency welding, if the blade during use interrupted several serrated blade will scrap the whole, increasing its cost; conventional blade blanks generally approximate rectangular shape, the radial clearance angle and tangential clearance angle of the grinding process, the grinding path length, wheel consumption, long processing time, greatly reducing the efficiency of the grinding blade.
The gel is applied to the centrifugal molding process YG10 composite powder molding body, the effects of the solid content of the slurry rheology YG10 of the composite powder, the gel analysis of the centrifugal molding process, the amount of initiator and the impact pressure of the polymerization rate, and the influence of the centrifugal speed on the sintered body and performance. The results showed that: oleic acid as a dispersant to prepare stable and good mobility optimum slurry solids content of 50% (volume fraction), triggering agent is added in an amount 5mmol / L (relative to the volume mix), the condensate plastic forming process centrifugal slurry pressure to accelerate the curing, self-designed centrifugal molding machine.
When cutting carbide cutting tools, according to the relative movement of the workpiece and the tool the role of different cutting movement divided into the main movement and feed movement. Refers to the surface to be processed surface of the workpiece is about to be resected; transition surface is a surface of the workpiece by the cutting edge being formed; refers to the surface of the machined surface formed by cutting the workpiece. Cutting the main movement is the most important, the power consumption of most sports, it is the relative movement between the tool and the workpiece students. Car, boring main movement is rotational motion machine spindle. Additional feed motion is generated between the movement of the tool and the workpiece, to maintain a cutting continuously. Carbide cutting tool Carbide cutting tool when cutting through the workpiece material layer by a one-way piece resection.
Carbide tool is the structure within the high-pressure cooling innovation, innovation is the improvement of the structure of the original material innovative cooling techniques typically use high-pressure high-temperature alloys like titanium machining, machining superalloys have a very excellent performance. There flute theory of applications, such as Hot Wheels cutter, in fact, is to use the theory of flute. Functional application of innovative products is the original technology to the new technology, or the technology to integrate existing technologies. For example, double-sided blade shallow hole drilling, was just turning on the technology, and applications in recent years cutter.
Cemented carbide cutting tool components:
1.Flank
2.Head - the cutting part of the blade
3.Tool tip - the main and secondary cutting edge Remit called the tool tip
4.Arbor - used for clamping
Cemented carbide cutting tool geometry parameters include the rake angle γ, declination and φ φ_1, after angle α, and the main edge bevel λ. It is reasonable or not directly affects the accuracy and surface finish, tool life and productivity of labor, as well as tool - parts - the machine tool system vibration resistance. Therefore, the selection of the most favorable geometry parameters is one of the important issues in the cutting. After the size of the angle, affect the frictional force between the rear workpiece. Friction is larger, the faster the tool wears. Tool flank wear after the angle is zero; friction and cutting temperature rise faster, the damage to the tool and more dramatic. Therefore, from the viewpoint of wear, it should choose the larger rear corner.
When the first reference load pressure, and then use the pressure of the main carrier, and then restored to the reference load, the value calculated based on the depth of the pit before and after the two reference load difference is the Rockwell hardness.
Indenter used in Rockwell hardness test, 1/16in (1.588mm diameter) ball indenter (ball or tungsten carbide ball) and the diamond indenter (120 ° apex angle of the cone). Both pressure head need to be used separately. Because the main load varied, therefore, the combination of the pressure head and the main load is also varied. Depending on the combination of, are divided into A, B, C.......
Shore hardness (Hs) is frequently used in the machine shop job site test methods. Shore hardness test method with other hardness test method, i.e. the pressing head pressed into the formation of pits to determine the size of the hardness test method is completely different. It fell on front-end punch diamond the workpiece hardness test, test method determines the hardness value of its rebound height. The harder the workpiece, the punch, the greater springback value.
The Vickers hardness (HV), is pressed into the sharp corners of the diamond test material, the size of the pits formed at this time to determine the hardness. Corresponding with the Brinell hardness of the ball indenter, and this test uses the pyramid indenter.
Due to the principle of Vickers hardness Brinell hardness, so these two cemented carbide tool hardness test values are very similar.
Cemented carbide tool hardness in the Rockwell hardness (HR) is the most commonly used machine shop. Especially after heat treatment, hardness test parts generally Rockwell hardness test. Rockwell hardness test method is widely used, its causes is the Rockwell hardness of the method is simple. Whether Brinell hardness, Vickers hardness, and the test method are required to measure the diameter or diagonal length of the pits indenter is very troublesome.
Cemented carbide tool hardness (Hardness) Code H. Different hardness test method, the conventional representation Brinell hardness (HB), Rockwell hardness (HR), Vickers hardness (HV), Shore hardness (Hs), Leeb hardness (HL), which hard Brinell hardness and Rockwell hardness in the hardness of the alloy tool more commonly used, the contrast between the hardness of cemented carbide tool table complete the conversion between different representations.
Called Brinell hardness (HB), is that when the ball indenter is pressed into the surface of the test material, the pressure in the test surface the pit required load is divided by the residual dimple diameter calculated from the pit surface area quotient.
The ball is certainly better than the test material hard. If the ball is forcibly pressed into the hard material than it, will cause damage to the ball, and so can not test it hard material.
Conventional milling chips attached to the blades, the adhesion between the square shoulders milling edge.
Switch to climb milling.
Using compressed air Milling.
More sharp the milling cutting blades to promote the chip and then milling.
Monitoring flank faces wear in order to avoid excessive wear.
Climb milling multiple pass.
Consider one time to pass on the completion of the milling process.
Milling chip jamming square shoulders and cutting edge.
Try to conventional milling.
Select toughness grades.
Select horizontal milling machine milling.
blade exits the chip thickness is too large
By changing the position of the cemented carbide cutting tool relative to the workpiece, so that when the blades exit reduces chip thickness.
Use climb milling.
Reduce the amount of feed per tooth.
Select a smaller diameter cemented carbide tool.
Use a sturdy cutting insert trough (H).
1. Milling feed per revolution excessive
The axial adjustment cemented carbide tool or classification blades. check center high with a dial gauge.
Check the spindle run out and mounting surface cemented carbide tool.
Milling feed per revolution decreases to less than 70% of the width of the parallel forging.
If possible, use a wiper blades milling.
2. Milling vibration
3. BUE formed on milling inserts
Increase the milling cutting speed in order to improve the processing temperature.
Interrupt the supply of coolant.
Use the sharp milling cutting insert having a smooth rake face.
Use positive rake angle insert geometries.
Try to use higher cutting parameters cermet grades.
5 workpiece chipping
Reduce the milling feed rate per tooth.
Select a fine-toothed the superdense teeth cutting tools.
Repositioning of cemented carbide tool cemented carbide tool exit thinner chips.
Choose the most suitable main angle (45 degrees) and light cutting trough.
Select sharp cutting blades.
Monitoring flank wear in order to avoid excessive wear.
1. Clamping poor
Possible solutions.
Assess the cutting force and support direction or improve clamping.
Milling cutting force is reduced by reducing the milling depth of cut.
Sparse teeth and different tooth pitch milling cutter to obtain a more positive cutting action.
L trough with small nose radius and parallel surfaces.
Select fine grain coating or thin coating blades
2. Workpiece is not firmly
Consider the square shoulder milling cutter trough has a positive rake angle (90 degree entering angle).
L trough blades
Lower axial cutting force - the use of low depth of cut, small nose radius and parallel surfaces.
Select sparsely toothed milling cutter has a different pitch.
3. Use a large overhang tool
Overhang as small as possible.
Use sparse teeth milling cutter having a different tooth pitch.
Balanced radial and axial cutting forces - the main angle of 45 degrees, a large nose radius or circular blade cemented carbide tool.
Increase the amount of feed per tooth
The use of light cutting insert geometry-L / M
4.Unstable spindle milling side shoulder
Select cemented carbide tool diameter as small as possible
Positive rake angle cemented carbide tool and blades
Try to conventional milling
Check spindle deviation to determine whether the machine can withstand
5 table feed irregular
Try to conventional milling
Tighten the machine feed device.
Results: HSS twist drill for drilling process in use after the barrel drill, improve the accuracy of the barrel drill, extend the life of the barrel drill to achieve the effect of cost-cutting.
Summary: deep hole barrel drill is first used in weapons manufacturing industry, hence the name barrel drill. In order to effectively use the barrel drill, must maintain a certain relationship between the hydraulic and oil amount. Barrel drill work process if the oil pressure is too low, the chip will be stuck in the barrel drill pipe, barrel drill damage the barrel drill must pay attention to this point.
Results: HSS special drill bit to process, but the processing is very difficult, and the pass rate is very low. Of special drill can now be used in the HSS drill head plus the "H" of the micro-alloy blade, as shown.
Summary: difficult to cut materials has the result of the nature of the material difficult to process, hard cutting materials processing, cutting his way pause, hard cutting materials because of the cutting heat hardening. And then just stop place to continue drilling, the cutting edge will slip in the hardened surface; can not afford to feed force defect.
Results: in the past is the first long cemented carbide with the HSS twist drill out of the hole, and then hollow drilling process twice, and finally finishing reamers. Now use a front-end for the whole of cemented carbide twist drills, only processing once last reamer finishing.
Results: HSS drill processing, processed out of the aperture size tolerance, reached after the switch to cemented carbide twist drills prefabricated hole reamer machining requirements.
Summary: during the processing of this material, if not cemented carbide twist drills chisel edge processing to a certain extent, the life of the cemented carbide twist drills will be halved, it is necessary to mechanical cemented carbide twist drills type grinding.
Results: plan to only use cemented carbide reamers finishing hole with the drill bit processing. Cemented carbide reamers processing chip clogging occurs. Finally, from the outlet side of lubricating the chip flow, solve this problem cemented carbide reamers processing.
Summary: cemented carbide reamer processing, when its more than 10 times the diameter, the cutting length of the cemented carbide reamer hole will chip clogging occurs, this cemented carbide reamer the machining surface and dimensional accuracy are very big impact, so it is necessary to take measures to put the chips forcibly ejected. Using the barrel drill is one way, but the equipment involved. Finally, solve the problem by supplying oiling from the export side.
Cemented carbide reamers the accuracy of the cutting edge and the surface of the machined surface roughness (Automotive parts processing)
Results: leave a lot of traces of the processed surface, the performance is very uneven. Careful grinding of cemented carbide reamers, will improve the quality of the machined surface.
Cemented carbide reamers processing hole bending solution (automotive parts hole machining)
Results: Average brazed cemented carbide reamers, about after 50 holes aligned our check processing, found the hole processing the prefabricated holes allowance change, bending, 0.03mm/50mm rods The form of regulation was unable to pass. Switch to rigid good overall cemented carbide reamers, this problem is solved.
Summary: Cemented carbide hinge tool having one or a plurality of cutter teeth, for resection has rotary tool for processing the thin metal of the bore surface the reamer or repair holes. cemented carbide reamer in the manufacture of a small diameter, because of brazing, the arbor in a certain extent, the softening can not be avoided, especially during relatively large allowance processing because Arbor soft and often only along the prefabricated holes scroll, cutting not work, so in this case you should use the rigid good overall type cemented carbide reamers.
The cutting edge, also called the main cutting edge or main blade, is the intersecting line of the front and rear flank, the cutting edge shoulder main cutting work.
Results: The usual practice is to use the straight edge end mills cutting edge for side milling machining, but the poor accuracy of machining by the cutting edge of the machined surface, the need for the second cutting. Use 15 ° spiral end mills to resolve the problem.
Summary: The cutting edge is a straight edge, the vibration of the cutting will be directly affected by the cutting surface. The cutting edge of the straight edge rake angle is smaller than the oblique edge; it is processed by the cutting edge machining surface accuracy is not always ideal. Now the measures taken to reduce fever is using oblique edge and Cutting fluid (mist) at the same time.
Results: The usual practice is to cemented carbide milling on the front on the cutting edge machining plane (plat land), cemented carbide milling clamping on the machine, to be processed very difficult to 0.01mm below. However, if the use of micro cemented carbide milling, grinding, assembly as long as the cemented carbide milling Vice behind unflatness will be absorbed, the cemented carbide milling 's cutting edge will form an ideal arrangement, thereby enhancing hard the accuracy of the machined surface of cemented carbide milling cutter. And the assembly is relatively simple, can significantly improve the efficiency of the cemented carbide milling.
Summary: In order to improve the accuracy of the machining surface, in the front processing plane is the general practice, but because of the assembly with the bad unevenness and tilt occur during grinding can not be guaranteed to be able to achieve the accuracy requirements. Fillet micro cemented carbide milling use front-end, will be able to improve the machining accuracy.
Results: it is very difficult to cutting steel with cemented carbide end mills, as cutting cemented carbide end mills often broken. The main reason is cutting vibration and swarf the wound caused by the breakage of carbide end mill. To such cemented carbide end mills having large helix angle need for honing, in order to prevent the occurrence of these phenomena. After honing cemented carbide end mills the ideal cutting effect.
Summary: When the groove machining or extrusion processing Cemented carbide end mills, carbide end mill breakage occurs swarf clogging the flute and chips outflow direction does not correspond, it is necessary cemented carbide end mills cutting edge to take an oblique direction. Thus, the outflow has been improved, but the ensuing problem is that the shape of a cemented carbide end mills cutting edge prone gap. For the protection of the cutting edge, carbide end mill, it is necessary to be honed. Carbide end mill.
Summary: The temperature rise of the workpiece material is due to the savings of the heat generated by each cemented carbide milling cutter cutting edge. That is, the heat buildup of at least some of the methods is to use only one cemented carbide milling cutter cutting edge to cut the But then the efficiency will be low. Considering the shape of the workpiece, the cutting area, and cutting conditions, and to increase the number of cemented carbide milling cutter cutting edges and the savings of the heat does not affect the processing conditions, and found that the cemented carbide milling cutter teeth number is 6 teeth ideal.
Cemented carbide milling cutter teeth have a direct impact on the milling efficiency and processing quality cemented carbide milling cutter choice of the number of teeth is not common predetermined cemented carbide milling cutter many teeth and can improve production efficiency, but is limited by the chip space, the machine power and rigidity, the milling of the different diameter knife number of teeth have corresponding provisions. To meet the needs of different users of the same diameter cemented carbide milling cutter number of teeth is generally coarse teeth, teeth, fine-toothed three cemented carbide milling cutter number of teeth to choose from.
Results: P10 blade, but due to the cutting heat deformation, and finally had to re-processing. Later installed X407 blade PD1006R, reduce heat, there is no need to re-processing.
Summary: heat generated in the cutting, 60% -70% flows to the swarf, 20% -30% flows to the cutting edge, the rest flows to the workpiece material (the less heat, sometimes flows to air). If the heat flow to the cutting edge, i.e. the cutting edge wear, the cutting resistance increases, so, heat is regenerated when the rise in the temperature of the whole of the cutting edge, the friction between the workpiece material and the cutting edge becomes large, the workpiece material would be the effect of heat stress. Sheet is because of such heat and deformed. To use a material that can withstand the temperature rise, such as containing a large amount of titanium carbide blade, but also consider how to make the chip discharge performance is better.
Result: no cutting fluid, general machining cutting edge chipping in 30 parts, machined surface glitches. If you use Cutting fluid, tool life can be extended to about 80 parts can be processed. The effect of the Cutting fluid is obvious.
Summary: Cemented carbide tool cutting fluid effect - Cutting fluid cooling effect not only to prevent the rise of the workpiece material and tool temperatures, cutting fluid and also to prevent the lubricating effect of the friction of the workpiece material and tool behind. At this time, the cutting edge of the influence of these two effects, its rear wear and plastic deformation does not occur, and thus extend the life of the tool to the Cutting fluid.
As shown, if the different types of the material of the blade, cutting fluid, the amount of wear can also vary.
Cemented carbide tool cutting edge defect and honing (The outer periphery cutting of vehicle parts)
Results: cemented carbide cutting edge defect occurs, the life will be shortened. Cemented carbide tool cutting edge honing can increase tool life
Summary: In general, cutting steel when necessary to carry out the cutting edge honing of cemented carbide tool, cemented carbide cutting edge honing can prevent the fragmentation of the cutting edge and glue attachments cutting edge processing, or due to the cutting the vibration generated by the chipping, and the gap. Honed width of the cemented carbide cutting edge is approximately 0.5-0.8 times the feed amount.
Cemented carbide nose radius and machining surface to improve accuracy (finishing inside diameter of mechanical parts)
Results: R0.4 corner radius becomes R1.2 nose radius knife life will be very different. The nose of the tool worn smooth, further increase the angle of the rear of the nose portion, the above phenomenon disappears.
Relationship between posterior horn size and cemented carbide tool life (Electrical parts of face machining)
Cemented carbide tool life means a new cemented carbide cutting tools from the beginning put into use until the total cutting time up to the end-of-life, which includes multiple regrinding (number of regrinding said n) time, so cemented carbide tool life equal to the tool the durability multiplied by the (n +1).
Results: previous practice of cutting the anterior horn of the standards tools get bigger, a little while you will find the cutting edge becomes dull, the surface roughness of the machined surface. According to the size of the posterior horn and cemented carbide tool life relationship, if not only the anterior horn made bigger, increase the posterior horn, the problem is solved.
Cemented carbide tool cutting often occurred instance
1.Cemented Carbide Turning Tools Chipbreaker
2.Cemented Carbide Tool Life
3.Cemented Carbide Tool Nose Radius
4.Cutting Edge Defect and Honing
5.Cutting Fluid Effect
6.Machining Deflection Solutions
7.Cemented Carbide Milling Teeth Number Selecion
8.Cemented Carbide End Mill Honing Effect
9.Face Milling Cutter Applications
10.Side Milling Cutting Edge Spirals
11.Reamers Processing Bending Solutions
12.Reamers Allowance & Surface Roughness
13.Reamers Accuracy & Surface Roughness
14.Reamers Oil Supply & Surface Roughness
15.Cemented Carbide Twist Drill Grinding
16.Cemented Carbide Twist Drills Deep Hole Machining
17.Hard Cutting Materials Special Drill
18.Barrel Drill Use Instance
Cemented carbide cutting tools note:
• Cemented carbide cutting tool material is hard and brittle characteristics, it is sure to use a diamond grinding wheel finishing.
• Cemented carbide cutting tool materials having the hard and brittle characteristics, it will produce fracture when subjected to shock or the clamping force is too.
• Cemented carbide thermal expansion coefficient is small, it is used as a thermal sleeve or cold kits product, if the use temperature and the design value of a significant difference (high or low) will produce cracks.
• Note to be placed in a dry place, the storage of carbide cutting tools will make it corrosion due to cutting or other liquid, reduce tool strength.
• Hardness of brazing alloy blade brazing temperature is too high or too wet, will produce the blade off or cracks.
• Cemented carbide tool sharpening, you must carefully check whether the cracks.
• If electricity machining carbide cutting tools, tool surface should be checked for residual crack, otherwise it will affect the tool strength by fine grinding necessary to eliminate the tool surface cracks.
Cemented carbide tool wear includes abrasion wear, crater, chipping, thermal cracking, gap, abnormal debris, etc.
The mechanism of various cemented carbide tool wear occurred associated with the characteristics of the cemented carbide tool wear as shown in the table below.
Cemented carbide tool wear includes abrasions wear, crater, chipping, thermal cracking, gap, abnormal debris, etc. Various cutting edge wear occurs only one time is considerably less, and almost always is interrelated and occur simultaneously,the tool wear relationships together, as shown below.
Cemented carbide tool wear includes abrasions wear, crater, chipping, thermal cracking, notch, abnormal debris, etc.
Cemented carbide tool wear - peeled into pieces:
the elastic deformation due to the vibration of the workpiece material in the cutting generates, in front peeling, then choose a high cobalt content, good toughness material.
Tungsten Carbide Seal Ring Polishing Machine Main Technical Parameters
