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鑄件上出現了裂纹或是較大掉砂缺陷,一般是不回用的。我厂焊工張庆德同志研究了一种新的焊补方法,可以使这些廢品焊补后变成合乎質量要求的鑄件。先将裂紋或窟窿处鏟成坡口(如附图),然后用半熔化状态的腊在鑄件上做出缺陷部分的形状,再用腊模做成砂型。用与鑄件成分相同的鉄水澆鑄出来,經用砂輪磨去鑄造黑皮,将它补焊在鑄件缺陷部分,就可使鑄件回用。
Cracks on the castings or larger sand-out defects, are generally not used. Our factory welder Zhang Qingde studied a kind of new welding repairing method, can make these waste products become castings that meet the quality requirements after welding. The first crack or hole at the shovel into the groove (Figure), and then use the semi-molten state of the wax in the cast part to make the shape of the defect, and then made of sand wax mold. Casting with the same cast iron casting water cast out by the grinding wheel to cast black skin, it will be repaired in the defective part of the casting, you can make castings reuse.