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1986年2月石家庄石墨电极厂的大型生产设备,1500t电极挤压机在生产使用时发生主柱塞和缸套大面积严重拉伤,被迫停机待修,省计经委有关部门极为重视,组织省内部份单位成立了抢修会战指挥部。会战成员对设备的拉伤情况及材料和修复工艺进行了认真的讨论,决定采用电刷镀技术进行修复,同时请国内有关专家在修复之前进行了模拟试验,性能测试和技术论证,我们主要承担缸套拉伤的修复工作。缸套的基本尺寸为φ900×900mm,材质为ZQ6-6-3,直线度0.03/900mm,圆度0.085mm,表面粗造度(?)。其拉伤情况为:连续拉伤面积900×430mm,深度达3～4mm,断续研伤、拉伤、磨损需修复的面积达900×1350mm。其拉伤面积之大,沟槽之深,是罕见的,在国内运用刷镀进行这么大件的修复尚未有前例。
In February 1986, Shijiazhuang graphite electrode factory large-scale production equipment, 1500t electrode extruder in the production of the use of the main plunger and cylinder sleeve large area serious strain, was forced to shut down for repair, the provincial Economic Commission attached great importance to the organization Units within the province have set up a headquarters for battle repairs. The members of the meeting carefully discussed the equipment’s strain situation, materials and repair process, and decided to adopt brush plating technology for repair. At the same time, the relevant domestic experts were invited to carry out simulation tests, performance tests and technical demonstration before the repair. We mainly undertake Cylinder strain repair work. The basic size of cylinder liner is φ900×900mm, material is ZQ6-6-3, straightness 0.03/900mm, roundness 0.085mm, surface roughness (?). The strained condition was: the continuous stretched area was 900 × 430mm, and the depth was 3 ~ 4mm. The area for intermittent grinding, straining, and abrasion was 900 × 1350mm. It is rare that the area of the wound is large and the depth of the groove is deep. There is no precedent for the use of brush plating for such large-scale restoration in the country.