Powder metallurgy components are widely used in the automotive, machinery, home appliance, and medical device industries due to their near-net-shape forming, high material utilization, and ability to integrate multiple functions. To fully realize their performance advantages and ensure safe and reliable operation, operators must master scientific and standardized operating methods, covering assembly, debugging, operation monitoring, and daily maintenance, and addressing specific issues based on material characteristics and operating conditions.
During the assembly stage, design drawings and process specifications must be strictly followed to avoid mechanical damage or performance degradation caused by improper operation. Powder metallurgy products have a certain degree of porosity and are slightly less impact-resistant than forgings. Hammering or forceful striking should be avoided during assembly; instead, specialized tooling and moderate pressure should be used for gradual placement. For self-lubricating parts with porous oil storage structures, blockage of oil passages or disruption of pore connectivity during assembly should be prevented to avoid affecting subsequent lubrication. Before assembly, the surface of components should be inspected for dents, cracks, or corrosion. Any problems found should be promptly addressed to prevent potential hazards from progressing to the next stage.
During the commissioning and initial operation phase, reasonable load, speed, and operating temperature ranges should be set based on the material and structural characteristics of the components. Iron-based materials are suitable for medium loads and normal environments, but require enhanced protection under high humidity or dust conditions. Stainless steel and nickel-based materials maintain stable performance in corrosive or high-temperature environments. Copper-based materials have good thermal and electrical conductivity, making them suitable for light loads, high speeds, and electrical contact parts, but they are not suitable for long-term high loads. The first operation should involve a low-speed, low-load test run to observe for any abnormal noises, overheating, or vibration. Normal operation can only begin after confirming there are no abnormalities.
Monitoring and operation during operation are equally crucial. A routine inspection system should be established, using methods such as listening, temperature measurement, and vibration detection to promptly identify abnormal signals caused by wear, poor lubrication, or loose assembly. For self-lubricating components, the oil level should be checked periodically, and appropriate lubricating oil or grease should be replenished to avoid increased friction and wear due to insufficient lubrication. When changing lubricants, old oil residue should be thoroughly removed to prevent mixing different oils from causing viscosity incompatibility or chemical reactions. For high-load or high-speed rotating parts, inspection intervals should be shortened, and operating parameters should be adjusted in a timely manner according to temperature changes to prevent thermal fatigue and structural deterioration.
During routine maintenance, the working environment of components should be kept clean and dry to prevent the intrusion of dust, liquids, or corrosive media. For easily oxidized materials (such as aluminum-based, magnesium-based, and titanium-based materials), surface protection should be applied, the integrity of the protective layer should be checked regularly, and re-protection treatment should be performed when necessary.
Components that are not in use or are stored should be stored in dry, ventilated, and light-protected conditions, using moisture-proof and dust-proof packaging, and should be kept away from acidic and alkaline substances to prevent chemical corrosion and performance degradation.
Regarding operational training, relevant personnel should be familiar with the performance limits and failure modes of components made of different materials, master the correct assembly, lubrication, and testing methods, strengthen safety awareness, and comply with equipment operating procedures. For critical safety components, traceability management should be implemented to ensure that the source, quality, and replacement process meet the required specifications.
In summary, the operation methods for powder metallurgy parts should be guided by material properties and operating conditions, and should be integrated throughout the entire process of assembly, debugging, operation monitoring, and maintenance, forming a standardized and repeatable operating procedure. Strictly implementing these methods not only ensures the performance of parts and the reliability of equipment operation, but also effectively extends service life and improves overall production safety and economic efficiency.