Vuam tshuab ua haujlwm ntawm tooj liab thiab stainless hlau
I. Txheej txheem cej luam
Vuam ntawm tooj liab thiab stainless hlau feem ntau ntsib, thiab vuam yog nyuaj. Lub ntsiab manifestations yog: lawv yog heev rhiab heev rau kev nkag mus rau ntawm tooj liab thaum vuam. Txhawm rau tiv thaiv kev nkag mus ntawm cov kab nrib pleb los ntawm qhov tshwm sim, peb yuav tsum xub xaiv cov txheej txheem tsim nyog thiab xaiv cov kab vuam me me zog. ; Cov kauj ruam thib ob yog xaiv cov khoom ntim kom tsim nyog, tswj cov khoom uas nquag tsim cov eutectics qis, xws li: S, P, O, thiab lwm yam, thiab ntxiv cov khoom xws li Al, Si, Mn, V, Mo, Ni. , thiab lwm yam rau vuam.
2. Vuam txoj kev
1. Kev tuav arc vuam
Thaum phau ntawv arc vuam ntawm tooj liab thiab stainless hlau, yuav tsum paub tias yog tias koj xaiv austenitic stainless hlau vuam pas nrig, nws yuav yooj yim ua rau thermal tawg; Nws yog qhov zoo tshaj plaws los xaiv cov nickel-tooj liab vuam pas nrig (70% npib tsib xee + 30% tooj liab), los yog nickel-raws li alloy vuam rods, thiab tooj liab vuam rods (T237); Thaum vuam, siv ib txoj kab uas hla me me, tsis tshua muaj tam sim no, vuam ceev yam tsis muaj viav vias vuam txheej txheem, thiab ua kom lub arc deflect mus rau sab tooj liab kom tsis txhob muaj kev sib tsoo.
2. Submerged arc vuam
Cov teeb meem tseem ceeb thaum siv submerged arc vuam ntawm tooj liab thiab stainless hlau yog tawg thiab pores; ua ntej welding, qhov saum npoo ntawm qhov vuam thiab vuam hlau yuav tsum tau muab ntxuav kom nruj. Weldments nrog lub thickness ntawm 8 mus rau 10 hli feem ntau muaj 70 degree V-shaped zawj, thiab sab tooj liab ntshiab muaj 70 degree V-shaped zawj. Lub kaum sab xis yog 40 degree, lub kaum sab xis ntawm stainless hlau (1Cr18Ni9Ti) sab yog 30 degree, flux yog HJ431 lossis HJ430 (ci ntawm 200 degree rau 2 teev), vuam hlau feem ntau yog tooj liab, thiab 1 txog 3. nickel xov hlau los yog xov hlau yog muab tso rau hauv qhov zawj. Nickel-tooj liab alloy hlau; xaiv ib txoj kab vuam loj dua lub zog, thiab siv cov dej txias-hom tooj liab ncoo. Lub vuam hlau taw qhia rau sab tooj liab thiab yog 5 mus rau 6 hli ntawm qhov nruab nrab ntawm qhov zawj.
3. Tungsten arc vuam (TIG)
Thaum tooj liab thiab nws cov alloys yog welded nrog stainless hlau siv tungsten arc vuam, zoo vuam pob qij txha tuaj yeem tau txais, tab sis cov txheej txheem tsim nyog yuav tsum tau ua kom tau txais txiaj ntsig zoo; Cov ntaub ntawv yooj yim ntawm vuam pob qij txha muaj xws li pob qij txha thiab pob qij txha. Tsis muaj bevel ntawm sab tooj liab, thiab nws yog qhov zoo tshaj kom muaj ib nrab V bevel ntawm stainless hlau sab. Ua ntej vuam, ntxuav qhov chaw ntawm qhov vuam, thov cov flux (70% H3BO3, 21% Na2B4O2, 9% CaF2) rau pem hauv ntej thiab nraub qaum, qhuav nws thiab tom qab ntawd vuam. Sim siv Monel alloy (70% Ni, 30% Cu) raws li cov vuam hlau, los yog tooj liab alloy vuam hlau uas muaj silicon thiab txhuas, xws li: HS221, QAl9-2, QAl9-4, QSi{ {14}}, QSn4-3, thiab lwm yam; Thaum lub sij hawm TIG vuam, tungsten arc yog biased rau sab tooj liab, thiab qhov deb ntawm qhov chaw ntawm qhov zawj yog li 5 mus rau 8 hli. Tswj tus nqi melting ntawm stainless hlau; feem ntau ntawm cov khoom siv vuam yog tooj liab vuam hlau los yog tooj liab-nickel vuam hlau, los yog tooj liab vuam hlau uas muaj txhuas. Qhov no yog txhawm rau txhim kho cov khoom siv kho tshuab ntawm cov hlau welding thiab tiv thaiv kev nkag mus rau tooj liab tawg; feem ntau ceev vuam yog siv yam tsis Swinging txheej txheem; Thaum siv cov txheej txheem argon arc vuam-brazing, sim txo cov melting ntawm stainless hlau sab, uas yog sib npaug rau brazing kev twb kev txuas rau stainless hlau, thiab ib tug fusion vuam kev twb kev txuas rau sab tooj liab.
4. Gas vuam
Thaum tooj liab thiab stainless hlau yog welded los ntawm cov pa roj, vim cov roj vuam nplaim hluav taws kub tsis siab li qhov kub ntawm arc, lub hauv paus hlau ntawm ob sab yuav yaj tsis sib npaug vim muaj cov ntsiab lus sib txawv, qhov chaw kub-tshuaj yuav ua rau dav dua, deformation. tej zaum yuav nce, lossis txawm tias fusion yuav tsis tshwm sim; Thaum vuam, Thaum cov tooj liab ntshiab thiab 18-8 stainless hlau siv, HSCuZn-2, HSCuZn3, HSCuZnNi thiab lwm yam vuam hlau feem ntau yog siv, thiab 301 vuam hmoov (tooj liab hmoov) los yog borax yog siv rau vuam nrog nplaim nruab nrab; Yog tias qhov vuam ntev ntev, cov hlau tsis muaj steel tuaj yeem welded ua ntej vuam Ib txheej ntawm tooj dag yog surfacing ntawm ib sab ntawm qhov zawj nto thiab ces welded.
5. Brazing
Thaum brazing tooj liab thiab stainless hlau, lub solder siv yog tsuas yog nyiaj-raws li solder, xws li HL302, HL309, HL312, thiab lwm yam. Cov txheej txheem txheej txheem yog zoo ib yam li cov dav dav brazing. Nws yuav tsum tau muab sau tseg tias qhov kub thiab txias ntawm stainless hlau sab yuav tsum tsis txhob siab dhau, thiab lub tshav kub qhov chaw thaum lub sij hawm cua sov mus rau sab tooj liab.
