We research a new technics of compositive environment protective steel pre-preparing (including oil-remove, rust-remove, phosphorization).
本文研究了综合环保钢铁前处理(除油、除锈、磷化)的新工艺。
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A kind of the orthogonal optimization in this article by use of phosphorization fluid parameter, thus to solve phosphorization problem in P-110 material quality for casing sleeve.
介绍了一种采用正交法优选磷化液参数，从而解决P - 110材质套管接箍的磷化问题。
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