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湖南表面技术研究所开发研制的大面积精确刷镀技术已获国家专利（专利号91 10 6771·X）,这项技术是指对大面积工件能够一次刷镀完成,并且刷镀后不必进行精磨加工就能达到图纸的精度要求可直接装配使用。 大面积精确刷镀技术除具有一般刷镀技术的技术要求和技术特性之外,还必须具备以下五个技术条件: 1.使用大面积可溶性金属作阳极。使用可溶性金属做阳极,从阳极上电解溶入镀液的金属离子就能够补充刷镀时所消耗的主金属离子,使镀液保持浓度稳定,延长使用寿命。2.使用具有高稳定性的刷镀溶液,保证可溶性金属阳极的成功使用。3.在工装设计上要保证阴极（工件）与阳极之间的电阻均匀性。4.在工装设计上还要保证阴极表面上各点与阳极作相对运动时其速度完全相等,各点的沉积速度才会相同,刷镀层厚度才均匀。5.在刷镀溶液的循环供给上,要保证整个镀面上镀液均匀分配。 大面积精确刷镀技术的研究成功,使刷镀技术的应用领域进入了一个新的天地。原来刷镀只能用于小面积刷镀修复的,现在可以用于大面积刷镀修复了。而且现在已不仅用于修复,而是用于大面积、大批量产品的制造。如在中原油田和江汉油田,28X8500油田抽
Hunan Surface Technology Institute developed a large area of precision plating technology has been the national patent (Patent No. 91 10 6771 · X), the technology refers to a large area of the workpiece can be completed by a brush, and brush after plating without having to fine Grinding can achieve the accuracy requirements of the drawings can be assembled directly. Large-area precision plating technology in addition to brush plating technology with the general technical requirements and technical characteristics, but also must have the following five technical conditions: 1. The use of a large area of soluble metal anode. The use of soluble metal anode, from the anode electrolyte dissolved into the bath of the metal ions can be replenished when the plating of the main metal ions consumed, so that the bath to maintain a stable concentration, to extend the service life. 2. Use a high stability of the brush plating solution, to ensure the successful use of soluble metal anode. 3. In the tooling design to ensure that the cathode (workpiece) and anode resistance uniformity. 4. In the tooling design but also to ensure that the cathode surface of each point and the anode for relative movement when its speed is equal to the deposition rate of each point will be the same, brush coating thickness is uniform. 5. Brush plating solution in the cycle of supply, to ensure that the coating evenly plating bath. Large area of precision plating technology research success, so that the application of brush plating technology into a new world. The original brush plating can only be used for a small area brush plating repair, and now can be used for large-area brush plating repair. And now it is not only used for repair, but for the manufacture of large-area, high-volume products. As in the Zhongyuan Oilfield and Jianghan Oilfield, 28X8500 oil pumping