Pressure Reducing Valve PM Sintered Part
Qinhuangdao Zhongwei Precision Machine Parts Co., Ltd. Camshaft pressure reducing valve is one of the key components of the starter, and its quality directly affects the performance of the starter. There are several structural forms of the one-way device. The more common one-way device structure is mainly composed of a driving gear, a cover plate, an iron shell, an outer race of the one-way device pulley, a roller, and a spring.
Product Introduction
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Pressure reducing valve PM sintered part |
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Item |
Material |
Production Process |
Sintering Temperature |
Mold |
Custom |
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Pressure reducing valve powder metallurgy |
42crmo |
Powder metallurgy |
1280℃ |
To be customized |
Yes |
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Chemical composition |
C ：0.38～0.45% Si：0.17～0.37% Mn：0.50～0.80% S ：Allowable residual content ≤0.035% P ：Allowable residual content ≤0.035% Cr：0.90～1.20% Ni：Allowable residual content ≤0.30% Cu：Allowable residual content ≤0.30% Mo：0.15～0.25% |
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Available Materials |
Low carbon stainless steel, titanium alloy (Ti, TC4), copper alloy, tungsten alloy, hard alloy, high temperature alloy (718, 713) |
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Product advantages
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Smoothness |
Dimensional accuracy |
Product density |
Appearance treatment |
Appropriate weight |
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Roughness 1～5μm |
（±0.1%～±0.5%） |
92～95% |
mirror reflection |
0.03g～400g） |
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mechanical properties |
Hardness: annealed, 147~241HB 42CrMo mechanical properties: Tensile strength σb (MPa): ≥1080(110) Yield strength σs (MPa): ≥930(95) Elongation δ5 (%): ≥12 Reduction of area ψ (%): ≥45 Impact energy Akv (J): ≥63 Impact toughness value αkv (J/cm2): ≥78(8) Hardness: ≤217HB |
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Qinhuangdao Zhongwei Precision Machine Parts Co., Ltd. Camshaft pressure reducing valve is one of the key components of the starter, and its quality directly affects the performance of the starter. There are several structural forms of the one-way device. The more common one-way device structure is mainly composed of a driving gear, a cover plate, an iron shell, an outer race of the one-way device pulley, a roller, and a spring.
The pressure reducing valve is a valve that reduces the inlet pressure to a certain required outlet pressure through adjustment, and relies on the energy of the medium itself to automatically maintain a stable outlet pressure. From the point of view of fluid mechanics, the pressure reducing valve is a throttling element whose local resistance can be changed, that is, by changing the throttling area, the flow velocity and the kinetic energy of the fluid are changed, resulting in different pressure losses, so as to achieve the purpose of decompression. Then rely on the adjustment of the control and regulation system to balance the fluctuation of the post-valve pressure with the spring force, so that the post-valve pressure remains constant within a certain error range.
The pressure reducing valve is an essential accessory of the pneumatic control valve. Its main function is to reduce the pressure of the air source and stabilize it to a certain value, so that the control valve can obtain stable air source power for regulation and control. According to the structural form, it can be divided into film type, spring film type, piston type, lever type and bellows type; according to the number of valve seats, it can be divided into single seat type and double seat type; according to the position of the valve disc, it can be divided into direct acting type and Reactive formula.
The pressure reducing valve is a special device that automatically reduces the working pressure of the pipeline. It can reduce the high liquid pressure in the pipeline before the valve to the level required by the pipeline after the valve. The transmission medium here is mainly water.
Dear Customer:
Hello, our company is a high-quality development team with strong technical force, providing high-quality products, complete solutions and first-class technical services for the majority of users. The main products are stainless steel powder metallurgy parts, iron-based powder metallurgy parts, powder metallurgy parts for pressure reducing valves, powder metallurgy parts for automobiles, etc.
Powder metallurgy post-treatment: powder metallurgy products can be used directly after sintering; but when the performance requirements of the product are high, post-treatment is often required. The commonly used post-processing methods are as follows:
1. Shaping: Put the sintered parts into a shaping mold similar to the die structure, and perform another pressing on the press to improve the dimensional accuracy of the parts and reduce the surface roughness of the parts, which is used to eliminate the sintering process. The slight deformation caused by it.
2. Oil immersion: the process of putting the parts into hot oil at 100~200 °C or making the oil penetrate into the pores of the powder parts under vacuum. Parts soaked in oil can improve wear resistance and prevent parts from rusting.
3. Steam treatment: Iron-based parts are treated in 500~600°C water vapor to form a hard and dense oxide film on the inner and outer surfaces of the parts, thereby improving the wear resistance of the parts and preventing the parts from rusting.
4. Vulcanization treatment: place the parts in a molten sulfur tank at 120°C, take them out after more than ten minutes, and reheat to 720°C under the protection of hydrogen to make the pores on the surface of the parts form sulfides. Vulcanization treatment can greatly improve the friction reduction and processing performance of parts.
The company adheres to the purpose of establishing a business with integrity, keeping the business with quality, and prospering with progress, and continues to climb new heights with firmer steps to contribute to the national automation industry. Welcome new and old customers to rest assured to buy their favorite products. We will serve you wholeheartedly!
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