Brazing ntawm tooj liab thiab tooj liab alloys

1. Cov khoom siv brazing

(1) Lub zog sib txuas ntawm ntau cov khoom siv feem ntau siv rau tooj liab thiab tooj dag brazing yog qhia hauv rooj 10.

Table 10 lub zog ntawm tooj liab thiab tooj dag brazed pob qij txha

Thaum brazing tooj liab nrog tin lead solder, uas tsis yog corrosive brazing flux xws li rosin cawv tov los yog active rosin thiab zncl2 + nh4cl aqueous tov tuaj yeem xaiv.Cov yav tas kuj tseem siv tau rau brazing tooj dag, bronze thiab beryllium bronze.Thaum brazing aluminium brass, aluminium bronze thiab silicon tooj dag, lub brazing flux tuaj yeem yog zinc chloride hydrochloric acid tov.Thaum brazing manganese dawb tooj liab, tus neeg sawv cev txhaj tshuaj tuaj yeem yog cov tshuaj phosphoric acid.Zinc chloride aqueous tov yuav siv tau raws li flux thaum brazing nrog txhuas raws li muab tub lim hlau, thiab fs205 flux yuav siv tau thaum brazing nrog cadmium raws li muab tub lim hlau.

(2) Thaum brazing tooj liab nrog brazing muab tub lim hlau thiab fluxes, nyiaj raws li muab tub lim hlau thiab tooj liab phosphorus muab tub lim tuaj yeem siv tau.Silver-based solder yog feem ntau siv tawv solder vim nws qhov nruab nrab melting point, zoo processability, zoo mechanical zog, hluav taws xob thiab thermal conductivity.Rau cov khoom ua haujlwm uas xav tau kev ua haujlwm siab, b-ag70cuzn solder nrog cov ntsiab lus nyiaj siab yuav tsum raug xaiv.Rau lub tshuab nqus tsev brazing lossis brazing nyob rau hauv qhov chaw tiv thaiv cua sov, b-ag50cu, b-ag60cusn thiab lwm yam khoom siv brazing yam tsis muaj cov ntsiab lus tsis hloov pauv yuav tsum raug xaiv.Brazing muab tub lim hlau nrog cov ntsiab lus tsis tshua muaj nyiaj yog pheej yig, muaj qhov kub thiab txias thiab tsis zoo ntawm cov pob qij txha brazing.Lawv tsuas yog siv rau brazing tooj liab thiab tooj liab alloys uas tsis tshua muaj kev xav tau.tooj liab phosphorus thiab tooj liab phosphorus nyiaj brazing muab tub lim tsuas yog siv rau brazing ntawm tooj liab thiab nws cov tooj liab alloys.Ntawm lawv, b-cu93p muaj fluidity zoo thiab yog siv rau brazing qhov chaw tsis raug cuam tshuam rau kev thauj khoom hauv Electromechanical, instrument thiab manufacturing industries.Qhov sib txawv tshaj plaws yog 0.003 ~ 0.005mm.Copper phosphorus silver brazing filler metals (xws li b-cu70pag) muaj qhov toughness thiab conductivity zoo dua li tooj liab phosphorus brazing muab tub lim hlau.Lawv tsuas yog siv rau cov hluav taws xob sib txuas nrog cov kev xav tau siab conductivity.Daim duab 11 qhia txog kev sib koom ua ke ntawm ntau yam khoom siv sib txuas siv rau kev sib tsoo tooj liab thiab tooj dag.

Table 11 khoom ntawm tooj liab thiab tooj dag brazed pob qij txha