发明名称 |
REDUCING DROSS METHOD OF LEAD-FREE SOLDER |
摘要 |
A reducing dross method of lead-free solder includes the steps of: producing master alloy of reducing dross which comprises Sn and 0.1 to 0.8 wt% P; analyzing the percentage of P in the lead-free solder to be modified, in order to reach 0.008 to 0.015 wt% P in the lead-free solder, adding the master alloy into the lead-free solder with the percentage of P less than 0.008wt% or no P; then sampling the lead-free solder at regular intervals to determine the percentage and the percentage loss of P, if the percentage of P being less than a given value between 0.008 to 0.015 wt%, adding the master alloy to keep the percentage of P within 0.008 to 0.015 wt%.
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申请公布号 |
EP2359981(A1) |
申请公布日期 |
2011.08.24 |
申请号 |
EP20090828560 |
申请日期 |
2009.06.11 |
申请人 |
GUANGZHOU SOLDERWELL ENTERPRISE CO., LTD. |
发明人 |
DU, KUN;CHEN, MINGHAN;CHEN, XIN;CAI, LIESONG |
分类号 |
B23K35/26;B23K35/22;B23K35/24;C22C1/03;C22C13/00 |
主分类号 |
B23K35/26 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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