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采用电化学溶取法清除钻井扶正器硬质合金镶块碎体是一种简单易行、省事省力的方法。通过正交优化实验，优选出采用双极性脉冲电流，以15％NaCl＋20％NaKC4H4O6＋5％添加剂A＋5％添加剂B弱碱性电解液为基础的加工工艺参数。实验结果表明，采用优化工艺，清除1个硬质合金镶块碎体仅需3－5min，生产效率比手工抠取方法提高7倍，并可获得较高的加工精度（0．13mm）和较低的表面粗糙度值（0．8μm），材料去除率可达19．2mm3／min。采用这项工艺，每套装置每年可创经济效益近23万元。
Electrochemical dissolution method to remove drilling centralizer cemented carbide insert pieces is a simple, easy and labor-saving way. Through orthogonal experiment, the processing parameters based on bipolar pulse current with 15% NaCl + 20% NaKC4H4O6 + 5% additive A + 5% additive B weak alkaline electrolyte were optimized. The experimental results show that the optimization process can remove only one cemented carbide insert and only need 3-5min, the production efficiency can be increased by 7 times than that by hand, and the machining accuracy (0.13mm) Low surface roughness (0.8μm), material removal rate up to 19.2mm3 / min. Using this technology, each device can create economic benefits of nearly 230,000 yuan each year.