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一、概述化学镀镍是根据氧化还原原理进行的。利用合适的还原剂,使镍沉积在金属表面,常用的还原剂是次亚磷酸钠,从这种溶液中所得是无序金属镍和磷化镍的混合镀层,它具有许多优点,较高的显微硬度、较好的耐磨性能、耐腐蚀、镀层表面光亮、平滑、均匀一致。二、化学镀镍工艺根据油田生产实际要求,采用不同的化学镀镍液配方及参数,对碳钢表面进行化学镀镍处理,获得了较好的防腐蚀性能,满足油田注采设备的需要,其基本流程可分为:镀前预处理——化学镀镍——镀后热处理三部分,现分述如下:1、镀前预处理:对工件应彻底清洗,必要时采用碱煮除油和人工打磨除锈。
First, an overview of chemical nickel plating is based on the principle of oxidation and reduction. Using a suitable reducing agent to deposit nickel on the metal surface, a common reducing agent is sodium hypophosphite. From this solution is a mixed coating of disordered metallic nickel and nickel phosphide which has many advantages, such as high Microhardness, good wear resistance, corrosion resistance, bright coating surface, smooth, uniform. Second, the electroless nickel plating process According to the actual requirements of oilfield production, using different formulations and parameters of electroless nickel plating solution, the surface of the carbon steel electroless nickel plating, get better corrosion resistance to meet the needs of injection molding and oilfield equipment, The basic process can be divided into: pre-plating pretreatment - electroless nickel plating - after the heat treatment three parts, are as follows: 1, pre-plating: the workpiece should be thoroughly cleaned, if necessary, Artificial grinding derusting.