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北京石油化工学院2026年研究生招生接收调剂公告
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huangguaha

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我不是我

[求助] 不锈钢酸洗方面的,谢谢

Tarnished or reduced-oxide surfaces are usually not encountered on nickel-chromium or Ni-Fe-Cr alloys. These alloys can only be bright annealed in very dry hydrogen or in a vacuum. Oxides formed on their surfaces in other atmospheres
do not undergo complete reduction. Oxide or scale is the usual surface pickled on
nickel-chromium and Ni-Fe-Cr alloys.
Pretreating in a fused-salt bath is strongly recommended to facilitate pickling of oxidized or scaled surfaces. However, if the metal has been properly heated and cooled, it will usually have a surface suitable for direct pickling in Formula 3. If a fused-salt bath is used for pretreating, the following procedure should be used for pickling nickel-chromium and Ni-Fe-Cr alloys:
Treat in fused-salt bath.
• Quench in and spray with water.
• Immerse in Formula 4.
• Withdraw from bath and rinse with water.
• Immerse in Formula 1.
• Withdraw from bath and rinse with water.
• Pickle in Formula 3 as required.
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爱与雨下: 金币+1 2012-10-28 19:00:35
huangguaha: 金币+166, 翻译EPI+1, ★★★★★最佳答案, 非常感谢~~ 2012-10-28 22:48:38
镍铬合金及Ni-Fe-C合金常常不会出现生锈的或氧化还原的表面。这些合金只有在干燥氢气中或真空中环境下进行光亮退火。在其他环境下,表面因不能完全的还原而生成氧化物。氧化物和垢是这两种合金通常的浸蚀产物。为促使生成氧化物和垢表面的浸蚀产物,在熔盐浴中的预处理是强力推荐的。不管怎样,如果合金是经过了恰当的热与冷却过程,在配方3中,它的表面将适合直接的浸渍。如果运用了熔盐浴进行了预处理,镍铬合金及Ni-Fe-C合金应用下面的过程进行浸蚀:
熔盐浴中处理。
• 用水喷射,冷却。(淬火)
• 沉浸到配方4料中。
• 从盆中取出并用水漂净。
• 沉浸到配方1料中。
• 从盆中取出并用水漂净。
• 按要求用配方3料进行浸蚀。
2楼2012-10-28 00:11:35
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