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天津航道局218挖泥船(日本进口)液压缸内径360mm,长4550mm,工作油压210kg/cm~2,液压缸外形如图(a)所示。工作中,由于某种原因造成了内表面积严重划伤,划伤情况如图(b)所示,划伤局部长1000mm,宽100mm,深7mm,且多处划伤连片,严重影响液压缸使用,急需修复。该液压缸修复需要进入缸内施工,缸内径360mm,而人的肩宽一般400mm左右,人进出困难,只能从一端进入,另一端只有几个内径100mm的小孔,通风差,条件恶劣,修复难度大。采用堆焊、电刷镀、热喷涂等修复方法很难在缸内施工。我们采用国内外正
Tianjin Waterway Bureau 218 dredger (Japan imported) hydraulic cylinder diameter 360mm, length 4550mm, working pressure 210kg / cm ~ 2, the hydraulic cylinder shape shown in Figure (a) below. Work, due to a certain reason caused a serious internal surface area scratch, scratch the situation shown in Figure (b) below, the Minister of the scratch 1000mm, width 100mm, depth 7mm, and multiple scratches contiguous, seriously affecting the hydraulic cylinder Use, urgent need to repair. The cylinder repair need to enter the cylinder construction, cylinder diameter 360mm, while people generally shoulder width of about 400mm, people out of difficulties, only from one end into the other end of only a few holes 100mm diameter, poor ventilation, poor conditions, Repair difficult. Using surfacing, brush plating, thermal spraying and other repair methods is difficult in the cylinder construction. We use positive at home and abroad