Qhov txawv ntawm qhov tseem ceeb – Soldering vs Brazing
Txawm hais tias ob qho tib si soldering thiab brazing yog ob txoj hauv kev siv los koom nrog cov hlau thiab muaj cov ntsiab lus zoo sib xws, qhov sib txawv tuaj yeem pom ntawm soldering thiab brazing. Cov txheej txheem ob leeg yog siv los koom nrog ob lossis ntau dua hlau ua ke siv cov khoom siv hlau muab tub lim, uas muaj qhov qis qis dua li cov hlau sib txuas. Cov txheej txheem no suav nrog cov cua sov ntawm cov ntaub ntawv mus rau qhov kub thiab txias, qhov twg cov khoom ntim tau dhau los ua kua thaum koom nrog cov hlau tseem nyob hauv cov khib nyiab. Qhov sib txawv tseem ceeb ntawm ob txoj hauv kev no yog qhov kub thiab txias; brazing siv qhov kub siab tshaj 450 ° C, thiab soldering siv kub hauv qab 450 ° C.
Dab tsi yog Soldering?
Soldering yog siv los koom ob lossis ntau dua cov ntaub ntawv hlau ua ke siv cov khoom siv muab tub lim. Nyob rau hauv cov txheej txheem no, cov khoom siv solder siv los koom nrog lwm cov hlau tsis kub rau qhov kub siab. Hauv lwm lo lus, cov khoom siv solder dhau los ua kua ntawm qhov kub thiab txias. Nws feem ntau yog cua sov rau qhov kub qis dua 450 0 C. Thaum ntxov, feem ntau ntawm cov ntaub ntawv soldering muaj cov hmoov txhuas (Pb), tab sis tam sim no kev siv cov hlau lead-dawb solders tau ua tiav vim kev txhawj xeeb ntawm ib puag ncig thiab kev noj qab haus huv.
Brazing yog dab tsi?
Brazing txhais tau tias yog koom nrog ob lossis ntau dua cov ntaub ntawv hlau los tsim cov khoom sib txuas. Hauv cov txheej txheem no, ob lossis ntau dua cov khoom hlau tau koom ua ke los ntawm melting thiab ntws cov hlau muab tub lim rau hauv qhov sib koom ua ke. Cov hlau muab tub lim muaj qhov qis qis dua li cov hlau uas nyob ib sab. Cov khoom siv muab tub lim yog cov kua ntawm qhov kub thiab txias, tab sis lwm cov hlau sib koom ua ke yog nyob rau theem khoom. Nyob rau hauv cov txheej txheem no, cov hlau muab tub lim yog rhuab saum 450 ° C, thiab nws raug faib mus rau qhov sib koom ua ke los ntawm capillary nkaus. Cov txheej txheem xaus tom qab txias; lub brazed sib koom ua ke muaj zog metallurgical daim ntawv cog lus ntawm cov muab tub lim hlau thiab lwm yam hlau.
Qhov txawv ntawm Soldering thiab Brazing yog dab tsi?
yam ntxwv ntawm Soldering thiab Brazing:
Kub:
Soldering: Soldering yog ua tiav ntawm qhov kub thiab txias piv rau brazing. Nyob rau hauv cov txheej txheem no, cov ntaub ntawv solder thiab cov ntaub ntawv hlau uas yuav tsum tau ua ke yog rhuab mus rau ib tug kub ntawm 450 0 C.
Brazing: Hauv brazing, koom nrog cov hlau thiab cov khoom siv hlau ua kom sov rau qhov kub siab dua, uas siab dua 450 0 C. Cov khoom ntim khoom ua kua ntws los ntawm qhov ntsuas kub no.
Cov Khoom Siv Filler:
Soldering: Cov ntaub ntawv muab tub lim siv hauv cov khoom siv hu ua, "solders." Cov khoom siv solder sib txawv raws li daim ntawv thov. Piv txwv li; Hauv kev sib dhos hluav taws xob, cov hlau nplaum thiab cov hlau lead (Sn: Pb=6: 4) yog siv. Tsis tas li ntawd, cov tin-zinc alloy yog siv los koom nrog txhuas, txhuas-nyiaj alloy rau kub siab tshaj chav tsev kub, cadmium-silver alloys rau high-temperature daim ntaub ntawv, tin-silver thiab tin-bismuth rau electronics thiab zinc-aluminium rau txhuas. thiab corrosion kuj soldering.
Brazing: Feem ntau ntawm cov ntaub ntawv muab tub lim yog cov hlau alloys, thiab cov khoom muab tub lim nws txawv nyob ntawm daim ntawv thov; Piv txwv li, nws yuav tsum muaj peev xwm ntub lub hauv paus hlau, tiv taus cov kev pabcuam yav tom ntej thiab yaj ntawm qhov kub qis dua li cov hlau hauv paus. Feem ntau siv brazing hlau fillers yog alloys; Aluminium-silicon, tooj liab, tooj liab-nyiaj, tooj liab-zinc (tooj dag), tooj liab-tin (bronze), kub-nyiaj, Nickel alloy, thiab nyiaj.
Daim ntawv thov:
Soldering: Soldering yog siv rau hauv cov kav dej, koom nrog cov ntawv hlau, lub ru tsev flashing, nag gutters thiab tsheb radiators. Nws kuj tseem siv rau hauv kev xa hluav taws xob thiab hauv cov ntawv luam tawm.
Brazing: Brazing yog siv ntau yam kev siv; kom ceev cov yeeb nkab fittings, tso tsheb hlau luam, thiab cov lus qhia carbide ntawm cov cuab yeej, cov radiators, cov khoom siv hluav taws xob, cov khoom siv hluav taws xob, thiab cov qag. Nws tuaj yeem koom nrog cov hlau ntawm tib hom lossis ntau hom hlau uas muaj zog heev. Piv txwv li, txoj kev no tuaj yeem koom nrog cov cam khwb cia hlau rau cov hlau wrought, cov hlau tsis sib xws thiab cov khoom siv hlau ntxeem tau.
Image Courtesy: "Propane torch soldering tooj liab yeeb nkab" los ntawm neffk (tham) tus kheej ua haujlwm (CC BY 2.0) ntawm Wikipedia "Brazing xyaum" los ntawm Mass Communication Specialist Seaman Whitfield M. Palmer (Public Domain) via Commons
