tungsten steel nozzle needle valve is precisely customized and processed with a concentricity of 0.001. PTJ tungsten steel produces precision tungsten steel nozzles, tungsten steel needle valves, tungsten steel nozzle needle valves and other precision tungsten steel parts.
Tungsten steel nozzle needle valve, precision tungsten steel shaft, tungsten steel needle bar, PTJ cemented carbide are produced and processed according to the requirements of foreign customers and friends. Its size specification is: Φ8*Φ7.6*Φ6*Φ5.2*R0.05~R0.1*SR45*66.5. Tolerance of travel position is required for roundness of ±0.001, cylindricity of ±0.001, straightness of ±0.001, coaxiality of 0.004, circle run-out of 0.02~0.003, verticality of 0.012, micro-arc groove R0.2-R0.01~ R0.03 requires mirror polishing to meet dimensional accuracy tolerances.
The good use performance of tool materials depends on the material selection of the core working parts of the manufacturing industry, which is the promotion of the use performance of tool materials by economic and social development. The super-hard material tungsten steel produced by powder metallurgy technology has the advantages of high strength, high hardness, wear resistance, corrosion resistance, high temperature resistance, and small linear expansion coefficient. It has good physical stability and is suitable for precision nozzle needle valves. PTJ tungsten steel nozzle needle valve is precision customized processing to meet the concentricity tolerance of 0.001. The drawing specifications are as follows:
As a Chinese tungsten steel manufacturer, PTJ Cemented Carbide Manufacturing Co., Ltd. provides precision machining of tungsten steel nozzle needle valves, with consistent dimensional accuracy and tolerances of ±0.002, especially to meet the requirements of row size for precision mechanical parts. The tungsten steel nozzle needle valve produced and processed by PTJ cemented carbide according to the requirements of the customer’s drawings mainly adopts the following common cemented carbide material parameters:
1. CO content: 10%-20%.
2. Density g/cm3: 14.1～14.5.
3. Hardness: 87-92.0HRA.
4. Grain size: 0.6-1.2um.
5. Bending strength: 3400-4000MPa.
6. Elastic modulus GPa: 490.
7. Thermal expansion coefficient 10-6/0C: 5.4.
8. The dimensions and specifications of the tungsten steel nozzle needle valve are customized according to the drawings, and the accuracy requirements are up to ±0.002.
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