Daawaynta Dusha Guud ee Bolts

Dahaarka: ku dhejinta dahaarka dusha sare ee boolka si loo abuuro filim isku mid ah oo hagaajinaya caabbinta daxalka iyo muuqaalka. Faa'iidada ayaa ah in ay u muuqato mid wanaagsan, laakiin dhibtu waxay tahay in aanu waarayn oo si fudud loo xoqo.
Galvanization-kulul: ku dhex milidda boodhka ee zinc-ka dhalaalaysa si loo hagaajiyo caabbinta daxalka. Faa'iidada ayaa ah in ay leedahay awood xooggan oo ka hortagga daxalka mana fududa in ay dhacdo, laakiin khasaaraha ayaa ah in dusha sare aanu qurux ku filnayn.
Korantada: dhex galinta boltka ee elektrolytka iyo dhigista lakabka birta ee dusha sare ee birta iyada oo loo marayo electrolysis si loo hagaajiyo caabbinta daxalka iyo muuqaalka. Faa'iidada ayaa ah in dusha sare uu yahay mid siman oo qurux badan, laakiin khasaaraha ayaa ah in ay u nugul tahay qallafsanaanta hydrogen.
Dacro: immersing the bolts into a zinc-aluminum solution, ensuring that the bolt is fully in contact with the solution before shaking off the excess solution and drying it. Repeat the above process 2-4 times to form a dense film on the surface of the bolt, achieving the effect of anticorrosion. The advantage of this process is that the surface is beautiful and not easy to fall off, laakiin dhibtu waxay tahay in aanu waarayn oo si fudud loo xoqo. Now there is a hexavalent chromium-free formula, which is more environmentally friendly.