Tungsten Carbide Cutting Tools and Drilling in The Force and Power

When tungsten carbide drill through the product to remove unwanted metal, tungsten carbide cutting tools and drilling in the cutting forces acting on the carbide drill. So for carbide cutting tools have some drilling drilling power requirements. Drilling power in addition to material factors, drilling power (Pc) but also with the diameter, feed rate and cutting speed related. Required drilling approximate calculation formula can be used to check the power of the drilling machine can meet the power needs. For modern machine tools, most medium-diameter hole drilling carbide tools is not a problem, but there are times for large aperture diameter hole depth, it still needs to check the drilling power. 

For the large-diameter step of carbide tools for drilling, in particular when considering the trepanning cutter bits is subjected to total drilling torque, the torque value in nanometers is another valid value. Feed, diameter, material is the main factor affecting the torque values. Torque is the sum of the torque on each cutting edge is tangential to the center of force and the radial distance from the path of the product.

How Self-Tungsten Carbide Drill

If less than 2mm can be found tungsten carbide blade, such as a thin cutting blade used lathe, if more appropriate, generally available cemented carbide inserts with a cutting blade suitable for cutting machine to use, and then welded to the accompanying drawings in design corresponding round rod, drill bit better than the small drilled holes, with a diameter at least as large. Usually, after coarse grinding can be used by hand. If required hole diameter precision grinding machines available (tool grinder), and then use hand geometry and grind each cutting flutes. The diamond drill bit slightly smaller than the apex angle is appropriate, to repair a small chisel grind so easy when drilling hollow, to prevent swinging. Such tungsten carbide drill applies only to the depth of drilling hardened parts is not deep holes.

How to Choose The Right Tungsten Carbide Drill

Optional tungsten carbide drill, we must have a comprehensive tungsten carbide drill for understanding! Only by understanding the types of carbide drill to choose the most suitable for the job. First, we come from the four basic types of tungsten carbide drill understanding carbide drill! It has long been believed the drilling must be carried out at lower feed rate and cutting speed, this practice in the use of ordinary drill processing conditions were right, but now with the advent of tungsten carbide drills, the concept of drilling has also changed. In fact, by the correct selection of a suitable tungsten carbide drill bits, drilling can greatly improve productivity, reduce processing costs per hole. 

Tungsten Carbide Drill Body Effect

Upper tungsten carbide drill core body is threaded connection pipe, drill lateral part on a sink, bottom lip surface also opened outlets. Sink and are guaranteed circulation of fluid intake, reaching exclusion rock powder and cool the drill bit role. In order to increase the gap in the inner and outer sidewalls of the hard alloy welding on the drill when drilling clay and shale formations ribs, said ribs drill bit. In the highly abrasive formations can use a hard needle autogenous grinding tungsten carbide drill bit. Generally hard alloy drill rock drilling Drillability as a Ⅶ grade Ⅱ formation; needle tungsten carbide drills can drill a Ⅷ Ⅵ grade rocks.

Tungsten Carbide Drills Designed to Strengthen The Drill Tip

Tungsten carbide drill is designed to strengthen the drill tip geometry to choose a design, which is different from the standard design geometry cone drill point geometry design. This is a tetrahedral shape of the drill tip, consists of a main and a secondary rear corner after corner composition, these two angles can better protect the tungsten carbide drill drill tip at the center. As a result of this tungsten carbide drills can generate a free cross-cutting edge, and can help tungsten carbide drill positioning. SD 216 overall structural design makes tungsten carbide drill before the formal process does not need to pre-drill a pilot hole.

Notice Tungsten Carbide Drill Deep Hole

Can be a variety of gun drill drilling difficult materials, due to the slow processing of gun drill, so the chip easier. In drilling titanium alloy and stainless steel, the chip is a big problem, and gun drilling has better versatility in machining difficult materials. In these processes, the gun drill will still be heavily used. From the viewpoint of productivity, solid tungsten carbide drill gun drill machining efficiency ratio increased by 8-fold; processing costs from the perspective of the processing plant to save labor costs and transportation costs Waixiejiagong. Despite the solid tungsten carbide drill price ($ 375) more than five times higher than the gun drill ($ 70), but a substantial increase in productivity, and more than offset the increase soon tool costs.

Difference Tungsten Carbide Drill and High Speed Steel Drill Bit

 Generally belong alloy tool steel is an iron-carbon alloy fills only, but also of ordinary high-speed steel high-speed steel and high-quality high-speed steel, high speed steel ordinary common grades W18Gr4V, high-speed steel than carbon tool steel with better toughness , strength, heat resistance, cutting speeds than carbon tool steel (iron-carbon alloy) is much higher, hence the name high-speed steel; While carbide just better than the performance of high-speed steel cutting speed can be increased 2-3 times . So now are commonly used in high-speed steel and tungsten carbide drill!

Tungsten Carbide Drill Overview

Tungsten carbide drill is a drill core drilling used. A cylindrical drill bit body welded steel due to tungsten carbide inserts carbide cutting tool named. Its shape and drill inserts welded on the number of tungsten carbide cutting tools, arrangement, weld inlay different angles, called the end of the blade, the blade and the blade out to ensure that there is a gap in water and drain through the powder. The upper part of the body is threaded connection drill core pipe, drill lateral part on a sink, bottom lip surface also opened outlets. Sink and are guaranteed circulation of fluid intake, reaching exclusion rock powder and cool the drill bit role.

Tungsten Carbide Drill Cutting Tool Requires Constant Innovation

2012 as the global economy deteriorates, tungsten steel cutter, tungsten carbide drill bits and other cutting tools business is undoubtedly worse, hard year. This dilemma so many domestic slowdown in business development tools, domestic knives have been just blindly copying, imitation international brands, and the quality and craftsmanship have been not very good imitation, quality and innovation, enhance the brand influence, is undoubtedly an important way of life. Tool innovative ways we can three-pronged approach: three ways to the original principles of innovative materials, structural innovation, and innovative products such as functional application. For example, solid tungsten carbide drill core external high wear resistance and high toughness of the composite material, this material requires innovative solutions adapted to the outer edge of the drill bit high feed machining environments requiring high toughness core to extend the service life of the tool problems.

Overall Size of A Regular Connection Type Tungsten Carbide Drills

Conventional monolithic tungsten carbide drills are routine connection dimensions Ф34 connection size M14 × 1.5/Φ8, Ф36 is M14 × 1.5/Φ8, Ф38 conventional connection size is T24 × 5/Φ12, Ф42 conventional connection size is T24 × 5/Φ12, conventional connection dimensions Ф45 the T24 × 5/Φ12, two-stage combination of types of tungsten carbide drill diameter are Ф55, Φ65, Φ75, Φ76, Φ82, Φ85 different specifications, the size of the corresponding conventional connection also each are not the same.

Tungsten Carbide Drill Diameters

Tungsten carbide drill body with casting, forging and fine carbon steel cutting and other production and processing

technology,tungsten carbide drill bits wide field of application. Widely used in coal, gypsum mines and other soft rock drilling, reaming operations,tungsten carbide drill bits into the overall type, two combinations, three and four combinations of four types of combinations. Where monolithic tungsten carbide drill diameter Ф27, Ф28, Ф30, Ф32, Ф34, Ф36, Ф38, Ф42, Ф45 different specifications, the size of the corresponding conventional connection is also not the same, for example, is a regular connection dimensions Ф27 M12/Φ8, Ф28 conventional connection size is M12/Φ8, conventional connection dimensions Ф30 is M12/Φ8, Ф32 conventional connection size M14 × 1.5/Φ8.

Trends Affecting Tungsten Carbide Drills

Productivity and cost is now the greatest impact drilling trend. This means that drilling tools and tungsten carbide drill bit manufacturers must find ways to combine some of the operating mechanism, and constantly develop tools to meet more and faster demand.Tungsten carbide drill is easy to change, while the customer uses a drill to replace multiple carbide tip drill can drill more holes of different sizes. In addition, it also reduces the overall re-welding or grinding carbide drill overhead. End users only need to buy tungsten carbide drill tip, then the cost is roughly equivalent to the overall carbide welding or grinding overhead.

Tungsten Carbide Drills Used in The Automotive Industry

1.A car engine block, cylinder head, gearbox casing, pump housing, etc.

Tungsten carbide straight flute drill with high efficiency, high precision, widely used in machining box parts. Which Maxfor DP-Ⅰ type straight groove drill for machining cast iron materials, box-type parts, such as automobile engine block, transmission housing and so on. Maxfor DP-Ⅱ type tungsten carbide drill for machining aluminum alloy box parts such as automotive engine cylinder head, pump housing and so on.

2.Automobile connecting rods, crankshafts, axles and other parts alloy class.

Maxfor DT - Ⅰ type carbide twist drill with a chip smooth, long-life characteristics, especially suitable for processing high-strength alloy steel. Excellent performance in the automobile connecting rod, crankshaft, axle drilling, in the domestic leading level.

Tungsten Carbide Drill Ductility

Tungsten carbide drill friction heat generated can soften the workpiece material is malleable, ductile enough to make such a tungsten carbide drill to drill into the workpiece material and forming a ring around the neck and the deep bush. Thickness of the workpiece material is located just above the surface of the neck ring and the liner located below the surface of the total thickness of 1/3. Increasing the thickness of the workpiece material to provide bearing support for the cemented carbide, or the like used in the cemented carbide threading tap bearing. No debris from drilling process is suitable for processing a wall thickness ranging from 0.5 mm to 12.5 mm low carbon steel, stainless steel, titanium, aluminum, copper, brass and various other materials having ductility of the workpiece.

The Basic Types of Tungsten Carbide Drill

Choose from tungsten carbide drills into four basic types: solid carbide drills, carbide indexable insert drills, carbide drill bits and welded crown replaceable tungsten carbide drill. Each drill has the advantage for a particular processing conditions.

The Importance of The Rational Use of Tungsten Carbide Drill

In the past, it was believed that drilling must be carried out at lower feed rate and cutting speed, this view in the use of ordinary drill processing conditions were right. Now, with the emergence of tungsten carbide drill bits, drilling concept has also changed. In fact, by the correct selection of a suitable tungsten carbide drill bits, drilling can greatly improve productivity, reduce processing costs per hole.

Use Different Hardness Tungsten Carbide Drill

Use different hardness tungsten carbide drill:

1.YG3X (K01) ≥ 91.5HRA hardness of tungsten-cobalt alloy in the best wear resistance, but poor impact toughness, suitable for cast iron and non-ferrous alloys, broken fire steel, alloy steel small section of high-speed finishing.
2.YG3 (K05) hardness ≥ 90.5HRA wear after YG3X, more sensitive to shock and vibration, nonferrous metals and alloys for cast iron continuous cutting of fine cars and a half fine cars, fine threading and reaming
3.YG6A (K10) is a fine-grained hardness ≥ 91.5HRA alloy, wear resistance, suitable for chilled cast iron, nonferrous metals and alloys semi-finishing, also suitable for broken fire steel alloy semi-finishing and finishing.
4.YG6 (K15K20) high hardness ≥ 90HRA wear resistance, but less than YG3, shock and vibration is better than YG3X. For cast iron, non-ferrous metals and alloys, non-metallic materials at medium cutting speed semi-finishing and finishing.
5.YG8 (K30) high hardness ≥ 89.5HRA use strength, impact resistance, shock resistance compared YG6 good, but low wear resistance and allow the cutting speed. For cast iron, non-ferrous metals and alloys, non-metallic materials low roughing.

Typical Machining of Tungsten Carbide Drill

Typical tungsten carbide drill machining cycle time is between 2 seconds to 6 seconds. In order to optimize the quality and precision machining deep, so before every process had to use tungsten carbide drill manually or through automatic spray system for deep filling lubricant. Carbide drill chuck clamping sleeve is adopted, shank type is # 2 and # 3 Morse taper or cylindrical shank 20 mm straight. Common Deep processing and manipulation of objects, including exhaust and frame parts car with a pressure tank and water tank as well as a variety of conduits and piping systems as well as HVAC manifold and metal furniture. For processing needs smooth surface or a chamfered hole connection, you can use the flat type tungsten carbide drill to cut the surface of the workpiece in the ring-necked formed.

Connecting Dimensions of Conventional Tungsten Carbide Drill

Conventional two-stage connection size tungsten carbide drill type Ф55 combination of a regular connection size T24 × 5/Φ12, Φ65 is conventional connection size T24 × 5, Φ75 is T33 × 4.23, two-stage combination of types of tungsten carbide drill Φ76 regular connection size is T33 × 4.23, Φ82 conventional connection size is the size of a conventional connector T42 × 5.08, Φ85 is T42 × 5.08. Combination of three types of tungsten carbide drill diameter Ф89, Ф95, Ф110 different specifications, the size of the corresponding conventional connection also each are not identical. For example Ф89 regular connection size is T42 × 5.08, regular connection dimensions Ф95 is T55 × 5.08, regular size Ф110 connection is T55 × 5.08.

Use Tungsten Carbide Drill Safety Rules

1. Tungsten carbide drill operation, Wear overalls, safety glasses, helmets, etc.; Do not wear loose clothing and cotton gloves to avoid danger.
2. In order to prevent the iron grip cuts, hooks must be used when drilling to remove iron.
3. Prior to use, remember to check whether there are injuries drill, do not use if you have scars.
4. Met drill stuck, immediately turn off the motor.
5. Replace, remove the drill bit, it shall ensure that the equipment supply is disconnected.