Soldering yog science. Lub hauv paus ntsiab lus ntawm hluav taws xob hlau vuam yog ua kom sov thiab yaj cov khoom siv hlau los ntawm cov hlau nplaum, thiab tom qab ntawd siv qhov kev txiav txim ntawm flux kom nws ntws ntawm cov hlau yuav tsum tau soldered, thiab tsim ib qho ruaj khov thiab txhim khu kev qha solder sib koom ua ke tom qab txias. .
Thaum lub solder yog ib tug tin-lead alloy thiab soldering nto yog tooj liab, lub solder thawj wets lub soldering nto. Nrog rau qhov tshwm sim ntawm qhov tshwm sim wetting, lub solder maj mam diffuses rau cov hlau tooj liab, tsim ib txheej adhesion ntawm qhov chaw sib cuag ntawm lub solder thiab hlau tooj. Ob leeg sib koom ua ke. Yog li ntawd, soldering yog ua tiav los ntawm peb lub cev thiab tshuaj txheej txheem ntawm wetting, diffusion thiab metallurgy.
1. Kev ntub dej: Cov txheej txheem ntub dej yog hais txog qhov tseeb tias cov molten solder ntws nyob ib puag ncig ntawm lub hauv paus hlau nrog kev pab ntawm capillary quab yuam raws qhov hloov maj mam tsis sib xws thiab crystalline qhov khoob ntawm qhov chaw ntawm lub hauv paus hlau, yog li tsim ib txheej adhesion ntawm qhov saum npoo ntawm lub hauv paus hlau yuav tsum tau welded. Cov atoms ntawm cov khoom thiab hlau nyob ze rau ib leeg, mus txog qhov deb ntawm lub atomic gravitational quab yuam ua.
Ib puag ncig tej yam kev mob uas ua rau ntub dej: Qhov saum npoo ntawm lub hauv paus hlau yuav tsum tau welded yuav tsum huv si thiab tsis muaj oxides los yog paug.
Duab piv txwv: poob dej ntawm nplooj nplooj los ua cov dej ntws, uas yog, dej tsis tuaj yeem ntub cov paj. Thaum dej poob ntawm paj rwb, dej nkag mus rau hauv paj rwb, uas yog, dej tuaj yeem ntub cov paj rwb.
2. Diffusion: Nrog kev nce qib ntawm wetting, kev sib nrig sib diffusion ntawm solder thiab hlau atoms ntawm lub hauv paus hlau pib tshwm sim. Feem ntau cov atoms nyob rau hauv lub thermal vibrational lub xeev nyob rau hauv ib tug lattice lattice, thaum lub kub nce. Qhov kev ua haujlwm atomic intensified ua rau cov atoms nyob rau hauv lub molten solder thiab lub hauv paus hlau hla qhov kev sib cuag nto thiab nkag mus rau hauv lub lattice lattice ntawm ib leeg. Qhov txav ceev thiab tus naj npawb ntawm atoms yog txiav txim siab los ntawm cov cua kub thiab lub sijhawm.
3. Metallurgical bonding: Vim muaj kev sib tshuam ntawm cov hlau thiab cov hlau hauv paus, cov txheej txheem nruab nrab --- hlau yog tsim los ntawm ob lub hlau. Yuav kom tau txais kev sib koom ua ke zoo, cov hlau sib txuas yuav tsum tau tsim los ntawm cov hlau hauv paus yuav tsum tau welded thiab solder. Yog li ntawd, lub hauv paus hlau tuaj yeem ncav cuag lub xeev ruaj khov metallurgical bonding xeev.
