Electric soldering hlau vuam txoj cai
Soldering yog ib txoj kev tshawb fawb, thiab lub hauv paus ntsiab lus ntawm soldering nrog ib tug hluav taws xob hlau yog kom sov thiab yaj cov khoom solder hlau nrog ib tug rhuab hlau, thiab ces siv cov nyhuv ntawm flux kom nws ntws mus rau hauv cov hlau yuav soldered. Tom qab txias, nws tsim ib tug ruaj khov thiab txhim khu kev qha soldering point.
Thaum lub solder yog tin txhuas alloy thiab vuam nto yog tooj liab, lub solder thawj wets lub vuam nto. Nrog rau qhov tshwm sim ntawm ntub dej tshwm sim, lub solder maj mam diffuses ntawm cov tooj liab hlau, tsim ib tug adhesion txheej ntawm qhov chaw sib cuag ntawm lub solder thiab tooj liab hlau, ua rau ob lub ruaj khov. Yog li ntawd, soldering yog ua tiav los ntawm peb lub cev thiab tshuaj txheej txheem: ntub dej, diffusion, thiab metallurgical bonding.
1. Kev ntub dej: Cov txheej txheem ntub dej yog hais txog qhov ntws ntawm cov khoom siv melted raws li qhov zoo ntawm cov concave convex thiab crystalline qhov khoob ntawm lub hauv paus hlau los ntawm capillary quab yuam, tsim ib txheej adhesion rau ntawm qhov chaw ntawm lub hauv paus hlau, kom cov atoms. ntawm lub solder thiab lub hauv paus hlau nyob ze rau ib leeg, mus txog qhov deb qhov twg atomic gravity ua.
Ib puag ncig tej yam kev mob uas ua rau ntub dej: Qhov saum npoo ntawm cov khoom siv welded yuav tsum huv si thiab tsis muaj oxides lossis cov kab mob.
Metaphorically hais lus, thaum dej poob rau nplooj nplooj los ua cov dej ntws, nws txhais tau hais tias dej tsis tuaj yeem ntub cov paj. Thaum cov dej poob rau hauv paj rwb, dej nkag mus rau hauv paj rwb thiab ntub nws.
2. Diffusion: Nrog kev nce qib ntawm wetting, qhov tshwm sim ntawm kev sib nrig sib diffusion ntawm solder thiab base hlau atoms pib tshwm sim. Feem ntau, cov atoms nyob rau hauv lub thermal vibrational lub xeev nyob rau hauv lub lattice, thaum kub nce. Kev ua haujlwm atomic intensifies, ua rau cov melted solder thiab atoms nyob rau hauv lub hauv paus cov ntaub ntawv hla kev sib cuag nto thiab nkag mus rau ib leeg lub lattice. Qhov ceev thiab qhov ntau ntawm atomic txav nyob ntawm qhov kub thiab txias thiab lub sijhawm.
3. Metallurgical bonding: Vim muaj kev sib nrig sib txawv ntawm cov solder thiab lub hauv paus hlau, ib txheej nruab nrab - ib tug hlau compound - yog tsim ntawm ob hlau. Txhawm rau kom tau txais kev sib koom ua ke zoo, cov hlau sib txuas yuav tsum tau tsim los ntawm cov welded puag hlau thiab cov solder kom ua tiav lub zog metallurgical bonding xeev ntawm lub hauv paus hlau.
