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　　In the welding process of automatic dispensing machine, there will be problems of poor welding. These problems are mainly manifested in the following aspects: leak welding, virtual welding, continuous welding, non-smooth solder joints, tin-surfacing and tightening. In view of these problems, we should observe carefully, find out the causes of these defects, and then deal with them pertinently.

　　1、漏焊。漏焊一般是指在焊接過(guò)程中，焊盤(pán)上沒(méi)有錫的現象。自動(dòng)點(diǎn)膠機呈現這種狀況的原因大致有兩點(diǎn)，一是烙鐵頭沒(méi)有接觸到焊點(diǎn)，這個(gè)時(shí)候咱們就要調整該點(diǎn)的坐標，使烙鐵頭接觸到焊點(diǎn)，這樣就不會(huì )呈現漏焊;在一個(gè)就是焊盤(pán)表面氧化比較嚴重，錫根本粘不在上面。

　　1. Leakage welding. Leakage welding generally refers to the phenomenon that there is no tin on the pad during the welding process. There are two reasons for this situation in automatic dispensing machine. One is that the soldering head does not touch the solder joint. At this time, we need to adjust the coordinates of the spot so that the soldering head touches the solder joint, so that there will be no leakage soldering; the other is that the surface of the soldering pad is oxidized seriously and the tin is not adhered to it at all.

　　2、虛焊。虛焊一般是指在焊接過(guò)程中看上去焊點(diǎn)還可以，實(shí)際上焊接時(shí)不撈的或是透錫量不行。形成這種狀況的原因首要是烙鐵頭在焊盤(pán)上的停留時(shí)間不行或是溫度過(guò)低形成的。因而咱們只需延伸烙鐵頭的停留時(shí)間或是升高溫度就可以處理的

　　2. Virtual welding. Virtual soldering generally refers to the solder joint can be seen in the process of welding, in fact, it is not fished or tin penetration is not good. The main reason for this situation is that the retention time of the soldering head on the pad is not good or the temperature is too low. So we only need to extend the residence time of the soldering head or raise the temperature to deal with it.

　　自動(dòng)點(diǎn)膠機

　　Automatic dispensing machine

　　3、連焊。連焊一般是指緊鄰的幾個(gè)兩個(gè)焊點(diǎn)或是幾個(gè)焊點(diǎn)的焊盤(pán)鏈接在一起的現象。形成此種現象的原因要么是送錫量太多或是兩個(gè)點(diǎn)之間的空隙太小所形成的。遇到這種狀況，應該削減錫量，然后在看是否是烙鐵頭的方位是否正確，如不正確，應及時(shí)進(jìn)行調整

　　3. Continuous welding. Continuous welding generally refers to the phenomenon that several adjacent solder joints or pads of several solder joints are linked together. The reason for this phenomenon is either too much tin feeding or too small gap between the two points. In this case, first of all, tin should be reduced, and then to see if the position of the iron head is correct, if not correct, timely adjustments should be made.

　　4、堆錫。堆錫一般是指焊點(diǎn)時(shí)一個(gè)球形，管腳腿沒(méi)有漏出來(lái)的現象。自動(dòng)點(diǎn)膠機呈現此種現象的原因主要的是由于送錫量太大形成的，此時(shí)只需削減錫量就可以處理的，還有一種原因是指管腳腿太短，沒(méi)有顯露焊盤(pán)所形成的。

　　4. Tin heap. Tin stacking generally refers to a spherical solder joint, which does not leak out of the leg. The main reason for this phenomenon in automatic dispensing machine is that the tin feeding amount is too large, which can be handled by reducing the tin content. Another reason is that the leg of the pipe is too short and the solder pad is not exposed.

　　5、焊點(diǎn)不光滑、拉尖。焊點(diǎn)不光滑、拉尖是指焊過(guò)之后焊點(diǎn)成型欠好或是有毛刺并有拉尖的現象。此種原因首要是由于錫的流動(dòng)性欠好形成的，這個(gè)有時(shí)候也和咱們參數的設置欠好也是有一定原因的，要么就是停留時(shí)間過(guò)長(cháng)，形成助焊劑蒸發(fā)過(guò)快，在烙鐵頭的抬起過(guò)程中就會(huì )形成拉尖的現象。這個(gè)假如通過(guò)參數的設置無(wú)法處理的話(huà)，咱們就要考慮錫絲的問(wèn)題。

　　5. The solder joint is not smooth and sharp. Non-smooth solder joints and pointed solder joints refer to the phenomenon of poor solder joint formation or burr and pointed solder joints after soldering. The main reason for this is that the fluidity of tin is not good. Sometimes this is also due to the poor setting of our parameters. Either the residence time is too long and the flux evaporates too fast, which will lead to the phenomenon of tightening during the lifting process of the soldering head. If this can not be handled by setting parameters, we should consider the problem of tin wire.

　　當然在焊接過(guò)程中，假如是因為烙鐵頭該換而沒(méi)有及時(shí)更換的話(huà)，呈現這種不良焊點(diǎn)的幾率也是很大的，因而除了是該更換烙鐵頭的原因之外，其他的咱們一定要對癥下藥的。

　　Of course, in the welding process, if it is because the soldering head should be replaced and not replaced in time, the probability of showing such bad solder joints is also very large, so in addition to the reason for replacing the soldering head, we must take appropriate medicine.