The care and maintenance of screws made of special materials is a key link to ensure their long-term stable operation and extend their service life. These screws are often used in harsh environments or situations with high precision requirements, such as aerospace, petrochemical, nuclear power generation and other fields, so their material requirements and performance is high. Here is the pairScrews for special materialsDetailed description of maintenance and servicing:
1. Understand material properties
First of all, the care and maintenance of screws made of special materials must be based on a thorough understanding of their material properties. Screws made from different materials have different physical and chemical properties. For example, GH4099 high temperature alloy screws have remarkable properties such as high temperature resistance, oxidation resistance and corrosion resistance, while stainless steel screws have good anti-rust properties. Understanding these characteristics allows the development of targeted maintenance measures.
2. Regular inspection and replacement
1. Regular inspection: Regularly inspect screws made of special materials used to see if they are loose, cracked, corroded or worn. The frequency of inspections should be increased, especially in high temperature, high pressure and highly corrosive environments.
2. Timely replacement: Once the screws are damaged or show signs of performance degradation, they should be replaced in time to avoid causing greater safety risks. When replacing, new screws of the same specification and material as the original screws should be selected and installed according to the correct installation method.
3. Correct installation and fixing
1. Follow the installation guide: When installing the screws, you must strictly follow the manufacturer’s installation guide to ensure that the screws are evenly stressed during installation and avoid damage caused by over-tightening too tight or too loose.
2. Control the torque: use tools such as torque wrenches to tighten to the specified torque value to prevent excessive torque from causing screw breakage or thread damage, and to prevent excessive torque Excessive does not cause weak connections.
4. Anti-corrosion treatment
1. Keep it dry and clean: Screws made from special materials are susceptible to corrosion in humid environments, so their surfaces should be kept dry and clean to avoid contact with corrosive substances.
2. Use an anti-rust agent: In humid or corrosive environments, apply an appropriate amount of anti-rust agent for protection. When choosing a rust preventative, make sure it is compatible with the screw material and mating parts.
5. Reasonable storage
1. Storage environment: Store screws in a dry, ventilated, non-corrosive gas environment to avoid moisture and pollution. Screws that have not been used for a long time can be turned and inspected regularly to prevent corrosion and deformation.
2. Packaging intact: Keep the screw packaging intact to avoid physical damage during storage and transportation.
6. Lubrication and maintenance
For screws made of special materials that require frequent disassembly and installation, an appropriate amount of lubricating oil or grease can be applied regularly to reduce friction and wear and maintain smooth rotation. However, care must be taken not to use too much lubricant so as not to affect the tightening effect of the screws.
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