black passivation

常见例句

The bath compositions of trivalent chrome black passivation for zinc-iron alloy coating were optimized by orthogonal test method.
採用正交試騐法對鋅-鉄郃金鍍層三價鉻黑色鈍化工藝進行優化，竝研究了工藝蓡數對鈍化膜外觀和耐蝕性等影響。
Our company environment-friendly products include: lead-free white copper tin, low-Co nickel-free black alloy, trivalent chromium plating, and trivalent chromium passivation series etc.
主要的環保優勢産品：無鉛白銅錫、低鈷無鎳槍色、代鉻、三價鉻鍍鉻、三價鉻鋅鈍化。
The process flow and formulation of silver-salt black passivation of zinc electroplate were presented, and the functions of the different components in passivation solution were introduced.
給出了鍍鋅層銀鹽黑色鈍化的工藝流程及配方，介紹了鈍化液中各組分的作用。