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1.钢管液体渗铝流程对20~#钢管进行表面液体渗铝,其工艺流程如下:钢管渗铝前处理→热浸→扩散退火。1.1 钢管渗铝前处理除油→酸洗→冲洗→稀盐酸酸洗→氯化锌溶液纯化(助镀)→烘干。除油:用烘烧的方法去掉钢管表面的油污或油漆。烘烧温度为320～420℃。
1. Steel liquid aluminizing process 20 ~ # steel surface liquid aluminizing, the process is as follows: steel aluminized pre-treatment → hot-dip → diffusion annealing. 1.1 steel aluminized pre-degreasing → pickling → rinse → dilute hydrochloric acid pickling → zinc chloride solution purification (aiding) → drying. Degreasing: To remove oil stains or paint on the surface of pipe with baking method. The baking temperature is 320 ~ 420 ℃.