显示标签为“
tungsten carbide seal ring”的博文。
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显示标签为“
tungsten carbide seal ring”的博文。
显示所有博文
Tungsten carbide seal ring automatic grinding machine works:
1. Grinding machine for precision grinding and polishing equipment, is grinding, polishing materials placed on the grinding disc, grinding disc counterclockwise rotation of the workpiece rotation correction wheel drive, gravity pressurized way to put pressure on the workpiece, the workpiece and the grinding disc friction relative to the operation, polishing to achieve the purpose.
2. Grinding disc repair mechanism adopts hydraulic suspension front and rear rails reciprocating knife to shave diamond abrasive surface grinding disc for precision trimming, get the desired effect of the plane.
High quality tungsten carbide seal ring has the following characteristics:
1. Product after grinding, small dimensions and tolerances, superior sealing performance;
2. Adding the formulation process of corrosion of rare elements, more durable sealing performance;
3. The use of high strength and high hardness carbide material, no distortion, even under pressure;
GB Class A high-grade carbide seal rings are widely used in petroleum, chemical, mechanical and other pipeline seal.
High quality tungsten carbide seal ring mold making process is the production of graphite materials processed ring with a good carbide material loaded into a graphite mold, the mold material installed on RYJ-15-type sintering machine, the power supply connected to the top and bottom of the mold, heating power, the temperature of the material while applying a pressure within the mold, when the temperature was raised to 1500 ℃ ~ 1600 ℃, when a pressure of 6 ~ 8MPa, for 7 to 10 minutes, and then cut off power, to keep the pressure and cooled to room temperature, making this ring, the thinnest up to 2 mm, and dimensional tolerances and geometric tolerances are very small, then it welded metal associated with it put to use surface by mechanical processing.
Principle tungsten carbide seal ring means is a mechanical seal device is perpendicular to the axis of the two smooth vertical sealing element (ring and the stationary ring) affixed to each surface of the sealing means for relative rotation of the combined together, and this and by the pressure spring means is a sealing medium in the contact surface of the rotary ring and the stationary ring to generate the appropriate clamping force, so that the two end faces tightly bonded to achieve the purpose of sealing.
Tungsten carbide seal ring means is a mechanical seal device for sealing the cemented carbide ring, which ring is sealed in a metal sleeve connected to one side welding carbide ring. Carbide rings on the outer side of the metal sleeve scoliosis. Involving mechanical seal ring and the stationary ring, and more particularly relates to a carbide seal rings. Carbide seal ring, characterized in that the sleeve and the metal carbide rings, wherein a metal cap soldered carbide ring side.
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.
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.
