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Anti fatigue repair of automotive airbag shell die-casting mold
Date:2025-11-17 14:16     Source:daokedao     Browse:4

The die-casting mold for car airbag housing needs to withstand 15 high-frequency die-casting cycles per minute. The repeated impact of high-temperature metal liquid causes the mold to quickly develop fatigue cracks. Traditional molds need to be scrapped after producing 20000 pieces, and safety cannot be guaranteed after repair. Daokedao fused Co based high-temperature alloy coating maintains HRC40 hardness at a high temperature of 600 ℃, and its thermal fatigue life is extended to 80000 pieces compared to the original mold. The crack occurrence cycle is significantly delayed. After being applied in a certain automotive parts factory in South Korea, the cost of mold replacement has decreased from 300000 US dollars per year to 80000 US dollars, and the scrap rate of shells caused by mold cracks has decreased from 4% to 0.9%. This coating has passed the Volkswagen VW50001 safety standard certification, and the produced airbag housing fully meets the standards in collision testing, winning long-term orders from car companies such as Hyundai and Kia.

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