白光烙鐵頭焊接前要點松香,好多朋友一定也會經(jīng)常這樣做,白光烙鐵頭使用松香到底的作用是什么?
首先:松香是是什么?松香是俗稱,它其實是一種助焊劑。助焊劑松香屬于脂 松香中的一類產(chǎn)品,主要有黃色和淡黃色的兩種,都是松香的深加工產(chǎn)品,能夠溶解在醇溶劑中。
其次:松香在焊錫中的作用是:
**:烙鐵頭不沾錫,沾了松香后,容易將錫熔化并 沾在烙鐵頭上
**:錫絲做成很細,是因為要便于熔化,沾上松香,便于將細錫絲溶化 后變成圓潤飽滿 的水滴狀,而不是亂跑
第三:焊錫直接滴在焊點上,焊點為清洗干凈或 者有氧 化的話,很容易接觸不牢, 一碰就掉,加入松香有利于去除氧化的負面效果, 是 焊錫更牢固
第四:沒有焊錫,烙鐵從焊點上移開時容易焊 錫粘連,造成 焊點不美觀
從以上幾點可以看出白光烙鐵頭使用松香的作用,在焊接過程中有很中重要的作用,所以我i們要有很漂亮的焊接產(chǎn)品,松香是功不可沒的!
1.用松香,焊點會漂亮一些,用焊錫膏焊點會發(fā)黑。
2.焊電路板*好是帶著松香焊,因為松香是助焊劑。但不能太多,有一點就行,初學維修的都會掌握不好分寸,經(jīng)常焊一焊就好了,錫點不能大,也不能太小,多看電路板上的焊點?,F(xiàn)在都是機了焊的板子,個別用人工補焊的,補焊的地方都是電流比較大電壓比較高的地方。請看老式電子產(chǎn)品或老式黑白電視機用人工焊的。不好看,但結(jié)實。沒有開焊。八十年代后期基本上都是機子焊的,也叫做波峰焊,又快又好,但是電流大一點的地方開焊比較多。焊錫膏只有焊接難上錫的鐵件等物品時才用到,具有腐蝕性,一般只用松香就行了,松香的作用是析出焊錫中的氧化物,保護焊錫不被氧化,增加焊錫的流動性。
3.電子元件一般都是上好錫的,如果生銹要先刮亮,放到松香上用烙鐵燙一下,再上錫。電路板刮亮以后可以直接插上已上錫的元件用松香芯焊錫絲焊接。在松香揮發(fā)完之前移開烙鐵,如果焊錫發(fā)粘要再蘸點松香,焊錫凝固前不要移動元件。
白光烙鐵頭使用松香的作用英文說明
White iron head using rosin role
White iron head before the welding points of rosin, a lot of friends will do so often, white iron head using rosin exactly is what?
First: rosin is what? Rosin is known, it is in fact a kind of flux. Flux rosin belongs to a class of products in gum rosin, two main types of yellow and pale yellow, are products of deep processing of rosin, can be dissolved in alcohol solvents.
Secondly: the role of rosin in solders is:
The first: the soldering iron head not tin, with rosin, easy to tin melting and dip in the soldering iron head
Second: the tin wire made of very fine, is because of the need to facilitate melting, with rosin, facilitate the fine tin wire melted into a round shape of the droplets, and not run
Third: the solder drops directly in the solder joints, joint as clean or aerobic of words, very easy to contact is not strong, off, adding rosin is conducive to the negative effect of removing the oxidation of solder, is more firmly
Fourth: no solder, solder iron moves away from easy soldering tin solder joint adhesion, cause unsightly
Can be seen from the above points rosin as a flux, has an important role is in the welding process, so I I have a very beautiful welding products, rosin is undeniable!
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