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焊点

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The three-dimensional nonlinear finite element modeling is used to analyze stress-strain response of solder joint under certain power cycling loading condition.

采用非线性有限元方法,分析了CSP封装形式的焊点在给定功率循环下的应力应变。

Three-dimensional nonlinear finite element modeling was used to analyze stress-strain response of 63Sn37Pb solder joint under power cycling loading conditions.

本文采用基于单一内变量亦即形变阻抗的统一型粘塑性Anand本构方程,描述了63Sn37Pb钎料的粘塑性变形行为,采用非线性有限元方法分析63Sn37Pb钎料焊点在功率循环下的应力应变过程。

JG-19 adopt exact numeric control, it can keep ten programme and you can rejigger it freely. Use double impulses can make sure the jointing fastness and good surface. Seven segment LED display all seal data. JG-19 uses double gas jar power, desk can litre and lower by stepless and use hand lock. The electrode can adjust in all the position, so worker can seal all kinds figure and measurement easily.

JG-19采用精确的数字控制,能预存10个程序,并可随意更改、调用;运用双脉冲可确保焊接牢固、焊点美观;7段LED显示各焊接参数,JG-19更采用双气缸动作,工作台无级升降手拧式锁紧,电极立体式调节,使操作者可以轻易地焊接各种形状、尺寸的材质。

The sealant used silicone oxide membrane by sol-gel for seal ing the solder point of leaders and sides and back of device.

采用溶胶-凝胶法[1,2]制备二氧化硅对电极引线的焊点和器件的侧、背面进行封装。

Based on these studies, metallographic and SEM experiments are used to investigate the mechanism.

在此基础上,结合微观金相和SEM试验,研究双相钢焊点界面撕裂的机理。

The main conclusions are given in the last chapter, and the prospect and major content of study on SMT solder joint shape theory system are also reviewed.

第九章给出本文的主要结论,总结了SMT焊点形态理论体系中所涉及的主要研究内容并展望了其研究前景。

Because of this, all parts should be of excellent quality and all solder joints must be tight.

正因为如此,各部分应该是优良的品质和所有焊点必须紧绌。

The results are of importance to design and optimize of geometry shape of the solder joint.

这一结果对于焊点几何形态的设计及优化具有指导意义。

And the different section shape of the solder joint is given with the variation of solder volume.

给出了不同的钎料量对应的焊点剖面形态的变化。

The quantity of the solder joint is an important effect factor of the quantity of electronics product.

电子产品的质量很大程度上取决于焊点的质量与可靠性。

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