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一、泵壳的修理 1.裂纹的检查方法 首先用手锤敲击泵壳,如有破哑声,则说明已有裂纹,应仔细寻找。可在裂纹处浇上煤油,涂上一层白粉,再用手锤轻轻敲击,裂缝内煤油即会渗出,浸润白粉,呈一道黑线,裂纹长短即可查明。 2.裂纹的修理方法 (1)冷焊。冷焊只能用于焊缝要求不很严密、受力不大处,如机座处。焊接前应在裂纹末端钻孔,以免裂纹继续扩大,然后沿裂纹铲出坡口,以便焊透。当铸件的厚度在20毫米以下或不便于两面施焊时,可铲成V字形坡
First, the pump casing repair 1. Crack inspection method First hammer the pump casing, if there is a broken dumb sound, then there are cracks, should be carefully looking. Kerosene can be poured at the crack, coated with a layer of white powder, and then gently tap the hand hammer, kerosene cracks that will seep out, soaked white powder, showing a black line, the length of the crack can be identified. 2. Crack repair methods (1) cold welding. Cold welding can only be used for the weld is not very tight, less force at the office, such as the seat. Before welding, the hole should be drilled at the end of the crack to prevent the crack from continuing to expand, then scooping the groove along the crack for penetration. V-shaped slope can be shoveled when the thickness of the castings is under 20 mm or inconvenient to apply welding on both sides