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我厂在生产中经常遇到一些3Cr2W8V铸铝模,由于损坏而需要修复。过去,我们是采用与母材相同的焊丝,用氩弧焊的方法修复的。但焊接后效果不太理想,极易产生气孔等焊接缺陷。后来我们就改用1Cr18Ni9Ti材料进行修复,焊补后模具令人满意,质量较好。下面将具体工艺过程介绍如下: 一、焊前准备 1.首先将模具需补焊处及附近部位用砂布打磨,清除氧化层,使其呈
I often encounter in the production plant some 3Cr2W8V cast aluminum mold, due to damage and need to be repaired. In the past, we used the same welding wire as the base metal and repaired it by argon arc welding. However, the effect is not ideal after welding, easy to produce porosity and other welding defects. Later, we use the 1Cr18Ni9Ti material to repair, welding die after satisfactory, better quality. The following specific process is introduced as follows: First, the preparation before welding 1. First, the mold to be repaired and near the welding site with abrasive cloth, remove the oxide layer, so that was