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勤思国内首家通过无铅认证回流焊设备,主要经营设备包括:SMT生产线设备、回流焊、贴片机、丝印机等,能满足中小型企业、研发单位和大型加工企业的需求,欢迎行业人士来电咨询订购。
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勤思国内首家通过无铅认证回流焊设备,主要经营设备包括:SMT生产线设备、回流焊、贴片机、丝印机等,能满足中小型企业、研发单位和大型加工企业的需求,欢迎行业人士来电咨询订购。
回流焊的温度曲线-小型回流焊|无铅回流焊|贴片机|SMT生产线-勤思 SMT设备,回流焊,贴片机,丝印台
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电子业之所以能够蓬勃发展,表面黏着技术(SMT, Surface Mount Technology)的发明及精进占有极大的贡献。 预热区通常是指由温度由常温升高至150 左右的区域 在这个区域 温度缓升以利锡膏中的部分溶剂及水气能够及时挥发 电子零件特别是IC零件缓缓升温 为适应后面的高温。 但PCB表面的零件大小不一 吸热裎度也不一,为免有温度有不均匀的现象 在预热区升温的速度通常控制在1.5 3 /sec。 可是,升温如果太快 由于热应力的作用 可能会导致陶瓷电容的细微裂纹(micro crack)、PCB所热不均而产生变形(Warpage)、空洞或ic芯片损坏 同时锡膏中的溶剂挥发太快 也会导致塌陷产生的危险。 炉子的预热区一般占加热通道长度的1/4—1/3 其停留时间计算如下 设环境温度为25 若升温斜率按照3 /sec计算则(150-25)/3即为42sec 如升温斜率按照1.5 /sec计算则(150-25)/1.5即为85sec。 6 虚焊或“枕头效应”(Head-In-Pillow). 回焊区温度最高 通常叫做液态以上时间(TAL, time above liquidous)。
公司动态-小型回流焊|无铅回流焊|贴片机|SMT生产线-勤思 SMT设备,回流焊,贴片机,丝印台
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常见问题-小型回流焊|无铅回流焊|贴片机|SMT生产线-勤思 SMT设备,回流焊,贴片机,丝印台
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问 Protel 99的可以用吗 Gerber 文件可以导出坐标数据吗 如果没有PCB线路图怎么办. 问 QS-1258A 和 QS-1258B 两个机型有什么区别. 网 址 www.qinsi.com. 电话 0755-83956958 企业QQ:2880707858 Email:qinsi@qinsi.com.
小型回流焊QS-5100
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价格 : 0.00. Rdquo; 回焊炉 是一种用于生产和维修SMT等各种工艺产品的台式回焊设备。 9、预热段温度设置范围和时间 70 150 、时间 0 5min. 10、加热段温度设置范围和时间 预热段温度 220 、时间 0 5min. 11、焊接段温度设置范围和时间 加热段温度 300 、时间 0 30s. 12、保温段温度设置范围和时间 焊接段温度- 0 50. 14、外型尺寸 300×250×160mm. 更新时间 2015-12-14 10:06:58 打印此页. 网 址 www.qinsi.com. 电话 0755-83956958 企业QQ:2880707858 Email:qinsi@qinsi.com.
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表面贴装技术基础知识-小型回流焊|无铅回流焊|贴片机|SMT生产线-勤思 SMT设备,回流焊,贴片机,丝印台
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锡球的工艺认可标准是 当焊盘或印制导线的之间距离为0.13mm时,锡珠直径不能超过0.13mm,或者在600mm平方范围内不能出现超过五个锡珠。 目前最快的时间周期达到0.08 0.10秒钟一片元件。 更新时间 2015-12-14 10:27:46 打印此页. 网 址 www.qinsi.com. 电话 0755-83956958 企业QQ:2880707858 Email:qinsi@qinsi.com.
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价格 : 0.00. 10、设置温度 0 - 300 满足无铅制程要求. 11、预热段温度设置范围和时间 70 150 、时间 0 5min. 12、加热段温度设置范围和时间 预热段温度 220 、时间 0 5min. 13、焊接段温度设置范围和时间 加热段温度 280 、时间 0 30s. 14、保温段温度设置范围和时间 焊接段温度- 0 50. 整机共有两套运行参数可以选择,分别是“回焊”和“维修”。 Ldquo;回焊”是针对焊接电路板元件而设计的,运行的整个过程有加热,保温, 设定的焊接 温度和降温 “维修”是针对对拆卸电路板元件、而设计的,运行的过程中有加热和保温,与“回焊”相比就少了个降温过程。 网 址 www.qinsi.com. 电话 0755-83956958 企业QQ:2880707858 Email:qinsi@qinsi.com.
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小型回流焊QS-5100
http://www.88832508.com/product/showproduct.php?lang=cn&id=17
价格 : 0.00. Rdquo; 回焊炉 是一种用于生产和维修SMT等各种工艺产品的台式回焊设备。 9、预热段温度设置范围和时间 70 150 、时间 0 5min. 10、加热段温度设置范围和时间 预热段温度 220 、时间 0 5min. 11、焊接段温度设置范围和时间 加热段温度 300 、时间 0 30s. 12、保温段温度设置范围和时间 焊接段温度- 0 50. 14、外型尺寸 300×250×160mm. 更新时间 2015-12-14 10:06:58 打印此页. 网 址 www.qinsi.com. 电话 0755-83956958 企业QQ:2880707858 Email:qinsi@qinsi.com.
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