We use the metal powder forming and sintering process, combined with subsequent finishing.
The gear with high strength, wear resistance and complex geometric structure is produced to meet the needs of modern transmission systems for lightweight, low noise and high efficiency.
Powder metallurgy oil pump rotors are made through powder metallurgy processes. Besides having the basic characteristics of traditional oil pump rotors, they also have the following unique advantages due to the process features:
1:The material density is controllable
(1):By adjusting the powder pressing density and sintering process, the material strength and porosity can be optimized, and the wear resistance and oil storage capacity can be balanced (pores can store lubricating oil and reduce friction).
(2):Common materials: Iron-based alloys (such as Fe-Cu-C), stainless steel (for corrosion-resistant scenarios), copper-based alloys (for low noise requirements), etc
2:Integrated molding of complex structures
It can directly form complex structures such as multiple steps, tooth shapes, and blind holes, reducing the cutting loss and assembly processes of traditional mechanical processing and lowering costs
The eccentricity accuracy of the inner and outer rotors is high (tolerance ±0.01 to 0.03mm), and the consistency of tooth profiles is good, which improves the volumetric efficiency of the oil pump
3:Performance advantage
(1):Wear resistance and self-lubricating property
The pore structure can store lubricating oil, creating a "self-lubricating" effect and reducing dry friction during high-speed operation. It is suitable for scenarios without additional lubrication systems (such as small oil pumps).
4:Low noise and smooth operation
The internal pores of the material can absorb vibration energy, and it has high forming accuracy and small meshing impact during operation.
5:Lightweight and cost advantages
No cutting processing is required. The material utilization rate exceeds 95% (traditional cutting processes are only 60% to 70%), and the weight is reduced by 10% to 30%. It is suitable for lightweight design requirements (such as in the automotive and
aerospace fields).
Typical applications
1:Automotive industry: Fuel pump and oil pump rotors (such as gasoline engines and diesel engines)
2:Household appliances and precision machinery: air conditioning compressor oil pumps, small hydraulic pumps.
3:Medical devices: Low-noise and corrosion-resistant micro oil pumps (such as peristaltic pump rotors).
Powder metallurgy processes, through the optimized design of materials and structures, are gradually replacing traditional processing techniques in the field of small and medium-sized oil pumps, especially suitable for scenarios with high requirements for cost, precision, and self-lubrication.
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