中文国产字幕丨日韩精品五区丨亚洲аv电影天堂网丨亚洲男人av香蕉爽爽爽爽丨精品午夜国产福利在线观看丨色综合av男人的天堂伊人丨国产精品s色丨中文字幕人妻a片免费看丨精品一区二区三区国产丨成人视频在线观看丨成人免费午夜福利片在线观看丨少妇人妻真实偷人精品视频丨国产娇喘精品一区二区三区图片丨青青成线在人线免费啪丨亚洲天堂自拍丨开心激情网站丨精品无码人妻av受辱日韩丨久久精品久久久久久噜噜丨亚洲精品中文字幕在线丨免费特级黄毛片在线成人观看丨国产真实乱对白精彩久久小说丨99re66热这里只有精品8丨小黄鸭精品密入口导航丨jizz欧美性11丨张柏芝hd一区二区

在線客服
您好,歡迎來(lái)到廣東臺(tái)錫金屬工業(yè)有限公司官方網(wǎng)站!

收藏本站

全國(guó)咨詢熱線0769-81665388

熱門搜索>>無(wú)鉛錫條,無(wú)鉛錫絲,環(huán)保錫條,環(huán)保錫絲,錫的價(jià)格,

當(dāng)前位置：首頁(yè) » > 焊錫技術(shù) » Leaded wave soldering copper (Cu) impurities in the management of

Leaded wave soldering copper (Cu) impurities in the management of

文章出處： 發(fā)布時(shí)間： 2011年5月22日 人氣 5730

In the practical application of lead solder in the solder on copper (Cu) content of electronic technology and solder materials engineering profession have reached a consensus: tin-copper (Cu) content should be controlled about 0.15%, when the tin solder copper furnace (Cu) content of more than 0.15%, the incorporation of new material must be diluted copper content, while copper (Cu) content reached 0.3%, then the whole tin furnace solder to be replaced and the clear result of the furnace, re-join the new material. 400KG tin stove for a run, if the dilution process to take, more than 100KG need to add new material, or fail to reduce copper (Cu) results.