Material Analysis
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PPO Sliding Wear-Resistant Grade Application
Problem Phenomenon
【Problem Phenomenon】Sliding parts need self-lubrication and wear resistance; ordinary PPO has a relatively high friction coefficient
Cause Analysis
PPO has dedicated sliding grades (NF1020, NFV1030) containing filling modification to improve friction and wear; wear-resistant, non-toxic and pollution-resistant characteristics are suitable for transmission sliding parts
Solution
Select wear-resistant modified grades for sliding parts; verify according to PV value; check dry friction and lubricated conditions separately; after adjustment, continuously sample to verify the effect, and resume mass production after confirming stability
Key Takeaway
PPO sliding grades specialize in wear resistance; transmission part tribology must be verified; after confirming effectiveness, fix the parameters and practices into the work instruction to prevent recurrence; include this case in the defect archive as a troubleshooting reference for subsequent similar problems
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