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碳化鉻NM400耐磨鋼管加工技術

更新時間:2020-03-24 19:29點擊次數:
目前對碳化鉻NM400耐磨鋼管的加工主要為了防腐蝕,防氧化,延長使用時間等,下面我們就針對碳化鉻NM400耐磨鋼管加工技術的常見的四種做法作如下介紹:

      一、氣體保護焊:在氣體保護下,焊接時碳化鉻耐磨鋼管表面的鉻和鎳不會受到氧化,保留了碳化鉻NM400耐磨鋼管原有的特質及耐腐蝕性能。

      二、酸洗鈍化:酸洗鈍化可以使碳化鉻耐磨鋼管內外壁產生一層薄而致密、堅硬的鈍化膜,鈍化膜的存在是碳化鉻耐磨鋼管防止腐蝕的根本原因。

      三、密封材料:密封材料是碳化鉻NM400耐磨鋼管件的使用壽命的關鍵點,密封材料的使用壽命決定了其的使用壽命。

      四、光亮固熔:碳化鉻NM400耐磨鋼管經過成型、焊接工藝后,必須經過1050度的固熔處理,以消除碳化鉻NM400耐磨鋼管因形變而產生的內應力,降低應力腐蝕,可以恢復管件焊接過程中的晶間變化,使焊接熱敏區的碳化物溶解于奧氏體中,防止對碳化鉻耐磨鋼管的性能帶來不利的影響。
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