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【问】:我厂是生产电冰箱的,在生产工艺中,紫铜的焊接是采用磷铜焊接法。长期以来,紫铜管经气焊加热后,铜管内壁产生了一定数量的氧化皮(见图1)。我们用氮气冲过也无用,严重影响了产品的质量。对此,我们没有其它办法,故来信向贵部请教,并请有关单位帮助我们解决这一技术难题。·上海吕巷电气冰箱厂技术科·【答】:你厂提出关于铜管钎焊时,接头内部及热影响区产生氧化皮问题。据根我们的经验,应采用如下技术措施,可以消除氧化皮而得到内表面
[Q]: I plant is the production of refrigerators, in the production process, copper welding is the use of phosphor bronze welding method. For a long time, the copper tube by gas welding heating, the brass wall produced a certain amount of oxide (see Figure 1). We use nitrogen rush also useless, seriously affecting the quality of the product. In this regard, we have no alternative but to ask your department for a letter and ask the relevant organizations to help us to solve this technical problem. · Shanghai Lvxiang Electric Refrigerator Factory Technology Section · 【Answer】: Your factory made about copper brazing, the joint and heat affected zone within the oxide scale. According to the root of our experience, the following technical measures should be used to eliminate the oxide scale and get the inner surface