Brazing ntawm stainless hlau

Brazing ntawm stainless hlau

1. brazeability

Thawj qhov teeb meem hauv cov teeb meem stainless hlau stainless yog tias cov yeeb yaj kiab oxide rau ntawm cov npoo dav cuam tshuam rau kev ntub thiab sib kis.Ntawm lawv, cov oxides cr2o3 thiab ti2 ntawm cr thiab ti yog ruaj khov thiab nyuaj rau tshem tawm.Thaum brazing nyob rau hauv huab cua, nquag flux yuav tsum tau siv los tshem lawv;Thaum brazing nyob rau hauv kev tiv thaiv huab cua, oxide zaj duab xis tuaj yeem txo qis tsuas yog qhov chaw siab uas muaj cov nyom thiab kub txaus;Hauv lub tshuab nqus pas, nws yog ib qho tsim nyog kom muaj lub nqus dej nqus dej txaus thiab kub txaus kom ua tiav cov nyhom zoo.

Lwm qhov teeb meem ntawm stainless hlau brazing yog tias qhov cua sov kub muaj cov nyhuv loj rau cov qauv ntawm cov hlau hlau.Qhov ntsuas cua sov brazing cua sov ntawm cov hlau tsis muaj roj stainless hlau yuav tsum tsis txhob siab dua 1150 ℃, txwv tsis pub cov qoob loo yuav loj heev;Yog tias Austenitic steel hlau tsis muaj ruaj khov Ely lossis NB thiab muaj cov ntsiab lus carbon ntau, brazing nyob rau hauv concensization kub (500 ~) yuav tsum zam.Txhawm rau tiv thaiv cov corrosion tsis kam los ntawm kev txo qis vim muaj nag lossis daus ntawm chromium carbide.Kev xaiv ntawm brazing kub kom martensitic stainless hlau yog qhov nruj dua.Ib qho yog kom phim rau cov kab kub nrog lub quenching kub, yog li los ua ke ua ke cov txheej txheem brazing nrog cov txheej txheem kev kho cua sov;Lwm tus yog tias lub ntsuas kub brazing yuav tsum qis dua qhov ntsuas kub kom tiv thaiv cov hlau los ntawm kev muag muag thaum lub sij hawm brazing.Lub hauv paus rau cov cai ntsuas kub ntawm cov tawv nqaij tawv muaj zog ua kom muaj qhov kub ntawm storm

Ntxiv nrog rau cov teeb meem saum toj no ob qho teeb meem tseem ceeb, muaj kev nyuaj siab ntawm kev tawg thaum brazing Austenitic steel hlau, tshwj xeeb tshaj yog thaum brazing nrog tooj liab zinc folding hlau.Txhawm rau kom tsis txhob muaj kev ntxhov siab tawg, lub workpiece yuav ntxhov siab analieved annealed ua ntej brazing, thiab workpiece yuav tsum tau ua kom sov thaum ua haujlwm.

2. brazing khoom

(1) Raws li kev siv ntawm stainless hlau weldments, tus cin feem ntau siv brazing muab tub lim hlau, nyiaj ua ke brazing muab tub lim hlau, nyiaj manger raws cus hlau, kev ua txiv neej brazing muab tub lim hlau, npib tsib xee raws li Brazing muab tub lim hlau thiab yam zoo nkauj hlau brazing muab tub lim hlau.

Tin Lead Solder yog siv rau stainless hlau soldering, thiab nws yog haum kom muaj cov ntsiab lus zoo.Ntau cov ntsiab lus siab dua ntawm cov cam, qhov zoo dua nws cov chaw uas tsis muaj hlau.Lub zog shear ntawm 1cr18ni99i stainless hlau pob qij txha tsoo nrog ntau cov pob qij txha Tin Lead rau hauv cov pob qij txha, lawv tsuas yog siv rau cov kab mob brazing nrog lub peev xwm me me.

Rooj 3 lub zog muaj zog ntawm 1cr18ni99i stainless hlau koom nrog tin lead solder

Nyiaj raws li cov tub lim hlau cov hlau yog qhov feem ntau siv cov hlau ua cov hlau rau brazing stainless hlau.Ntawm lawv, nyiaj tooj liab zinc thiab nyiaj tooj liab Zinc Cadmium cov khoom siv feem ntau yog siv ntau dua vim tias cov khoom ntawm cov hlau hauv paus.Lub zog ntawm ICR18NIKI9TI stainless hlau pob qij txha tsoo brazed nrog cov nyiaj uas muaj nyiaj los ntawm cov pob qij txha muaj cov pob qij txha tsis tshaj 300 tshaj 300 Cov.Thaum brazing stainless hlau tsis muaj npib tsib xee, thiaj li tiv thaiv corrosion ntawm brazed sib koom ua ke ntawm cov neeg siv npib loj, xws li B-Ag50cuznci.Thaum Brazing Martensitic Stainless hlau, txhawm rau tiv thaiv kom tsis txhob ua kom zoo nkauj ntawm lub hauv paus nrog 650 ℃ yuav siv, xws li B-Ag40Cuzcd.Thaum brazing stainless hlau hauv kev tiv thaiv huab cua, txhawm rau tshem tawm cov yeeb yaj kiab oxide rau saum npoo av, xws li B-Ag92Culi thiab B-Ag72Culi.Thaum Brazing Stainless hlau hauv lub chaw ua tub lim, uas yog qhov yooj yim ua kom yaj, cov nyiaj uas tsis muaj zog ntxiv xws li MN, NI thiab RD tuaj yeem ua tau Xaiv.

Rooj 4 lub zog ntawm ICR18NITI Stainless Hlau Sib Koom Tes Nrog Nyiaj Raws Li Cov Khoom Siv Hluav Taws Xob

Tooj liab raws li cov neeg siv cov hlau cov hlau siv rau cov hlau sib txawv yog tsuas yog kho tus me me thiab tooj liab cibalt crazing cutrals cov chaw ua tubval.Ntshiab tooj liab brazing muab tub lim hlau feem ntau yog siv rau brazing nyob rau hauv cov roj tiv thaiv lossis lub tshuab nqus tsev.Qhov kev ua haujlwm kub ntawm stainless hlau sib koom ua ke tsis ntau tshaj 400 ℃, tab sis kev sib koom tes muaj oxidation tsis zoo.Tooj Npib Nickel Brazing muab tub lim hlau feem ntau yog siv rau nplaim taws thiab cuam tshuam.Muaj lub zog ntawm lub brazed 1cr18ni99i stainless hlau sib koom ua ke yog muaj nyob rau hauv lub rooj 5. Nws tuaj yeem pom tau tias kev sib koom tes muaj lub zog tib yam li cov khoom kub ua haujlwm siab.Cu MN co brazing muab tub lim hlau feem ntau yog siv rau brazing martensitic stainless hlau hauv kev tiv thaiv huab cua.Lub zog sib koom tes thiab kev ua haujlwm kub yog sib piv rau cov uas muaj kub nrog kub raws li cov hlau.Piv txwv li, tus 1CR13 stainless hlau koom tes nrog b-cu58mnco sib koom ua ke nrog B-Au82nI class (saib cov nqi 6), tab sis cov nqi ntau lawm tau txo qis.

Rooj 5 Shear lub zog ntawm 1cr18ni99i stainless hlau koom ua ke nrog qhov kub siab tooj liab taws muab cov hlau

Rooj 6 Shear lub zog ntawm 1cr13 stainless hlau brazed sib koom

Manganese raws li cov neeg muab tub rog ua tub rog tau siv rau cov roj av thaiv, thiab cov roj purity yog yuav tsum tau siab.Txhawm rau kom tsis txhob muaj kev sib deev ntawm cov kav hlau, cov crealing cart cov hlau nrog brazing kub tshaj 1150 ℃ yuav tsum tau xaiv.Txaus siab Brazing nyhuv tuaj yeem tau txais rau cov pob qij txha stainless hlau tau tsoo nrog kev sib koom tes nrog kev sib koom tes ua haujlwm tau txog 600 ℃.

Rooj 7 Txiab Lub Zuag Las LCR18NI9fi Stainless Hlau Sib Koom Nrog Manganese raws li tus neeg sib txuas hlau

Thaum stainless hlau yog brazed nrog npib tsib xee muab tub lim hlau, kev sib koom tes muaj qhov ntsuas kub zoo.Tus muab tub lim hlau no feem ntau siv rau cov roj thaiv cov roj av lossis cov tshuab nqus.Txhawm rau kov yeej cov teeb meem uas ntau nriav sib koom ua ke hauv kev sib koom ua ke, uas muaj kev sib koom ua ke, cov sib koom ua ke yuav txo tau cov khoom sib koom ua ke, cov sib koom ua ke tsawg kom paub meej tias cov ntsiab lus yooj yim rau cov hauv paus loj loj hauv solder tau diffused rau hauv paus hlau.Txhawm rau tiv thaiv qhov tshwm sim ntawm lub hauv paus kev sib tsoo ntawm brazing lub sij hawm kev sib tw, cov txheej txheem kev kho mob ntawm lub sijhawm luv (piv nrog brazing kub) tom qab vuam yuav coj mus.

Noble Hlau Brazing Cov tub lim hlau siv rau Brazing Stainless hlau feem ntau yog B-Au82NPD thiab B-Au82NI, uas muaj qhov zoo wettability.Tus brazed stainless hlau sib koom ua ke muaj siab kub siab thiab oxidation tsis kam, thiab qhov siab tshaj plaws ua haujlwm tau ncav cuag 800 ℃.B-Ag54CUPD muaj cov yam ntxwv zoo sib xws rau B-Au82NI thiab nws tus nqi qis, yog li nws nyhav los hloov b-au82ni.

(2) Qhov saum npoo hlau ntawm cov hlau tsis muaj hlau hauv flux thiab cov cua sov xws li siv cov kab mob flux nrog kev ua haujlwm muaj zog.Thaum stainless hlau yog brazed nrog tin txhuas fluin, qhov haum flux yog phosphoric acid a a a acid aqueousous daws los yog zinc oxide cov kua qaub.Lub sijhawm ua si ntawm phosphoric acid aque kua yog luv, yog li cov qauv brazing ntawm cov cua kub ceev yuav tsum tau saws.FB102, FB103 lossis FB104 fluxes tuaj yeem siv rau Brazing Stainless hlau nrog Nyiaj Raws Li Nyiaj Raws Li Nyiaj Raws Li Nyiaj Raws Li Nyiaj Raws Li Nyiaj Raws Li Nyiaj Raws Li Nyiaj Raws Li Silver Raws Li Nyiaj Raws Li Nyiaj Raws Li Nyiaj Raws Li Silver Raws Li Nyiaj Raws Li Nyiaj Raws Li Nyiaj Raws Li Silver Raws Li Nyiaj Raws Li Nyiaj Raws Li Nyiaj Raws Li Silver Raws Li Nyiaj Raws Li Nyiaj Raws Li Nyiaj Raws Li Nyiaj Raws Li Nyiaj Raws Li Silver Raws Li Nyiaj Raws Li Silver Raws Silver Fork StassThaum brazing stainless hlau nrog tooj liab raws tus tub lim hlau, FB105 Flux siv vim tias yog cov kub siab.

Thaum brazing stainless hlau nyob rau hauv lub cub hluav taws, nqus huab cua xws li hydrogen, argon thiab decompposition ammonia feem ntau siv.Thaum lub tshuab nqus hluav taws xob, lub tshuab nqus tsev yuav qis dua 10-2pa.Thaum brazing rau hauv cov chaw tiv thaiv, lub lwg muab ntxiv rau cov cua.

2. Brazing technology

Cov hlau stainless yuav tsum tau ntxuav ntau nruj ua ntej brazing kom tshem tawm cov roj thiab roj yeeb yaj kiab.Nws yog qhov zoo dua rau Braze tam sim ntawd tom qab tu.

Stainless hlau brazing tuaj yeem tau txais nplaim, induction thiab cua sov cov txheej txheem.Lub cub hluav taws xob rau brazing nyob rau hauv lub cub hluavtaws yuav tsum muaj qhov zoo tswj qhov system (qhov txawv ntawm brazing kub yuav tsum tau ± 6 ℃) thiab yuav ua tau txias sai sai.Thaum hydrogen yog siv los ua cov pa thaiv cov roj rau brazing, qhov yuav tsum tau ua rau hydrogen kub thiab qhov ntau dua lub hauv paus hlau muaj stabilizer, thiab qis dua cov lwg Point of hydrogen yog qhov yuav tsum tau ua.Piv txwv li, rau Martensitic Stainless hlau xws li 1cr13 thiab cr17ni2t, thaum brazing ntawm 1000, cov lwg ntawm hydrogen yog qhov yuav tsum tau qis dua -40 ℃;Rau 18-8 chromium tsibckel stainless hlau tsis muaj stabilizer,Txawm li cas los xij, rau 1cr18ni99i stainless hlau muaj titanium stabilizer, lub hydrogen lwg taw tes yuav tsum qis dua -40 ℃ thaum brazing thaum 1150 ℃.Thaum brazing nrog kev tiv thaiv argon, lub purity ntawm argon yuav tsum tau ua siab dua.Yog tias tooj liab lossis npib tsib xee yog plated ntawm qhov chaw stainless, qhov yuav tsum tau ua rau lub purity ntawm kev tiv thaiv roj tuaj yeem txo.Txhawm rau kom cov kev tshem tawm ntawm cov yeeb yaj kiab oxide ntawm cov hlau ntawm stainless, bf3 ntxiv, thiab boron uas muaj tus kheej flux tov kuj tseem siv tau.Thaum lub tshuab nqus phoo Brazing stainless hlau, qhov yuav tsum muaj rau nqus tsev nyob ntawm lub ntsuas kub yog.Nrog rau qhov nce ntawm brazing kub, lub tshuab nqus dej yuav tsum tau txo.

Cov txheej txheem tseem ceeb ntawm cov hlau stainless tom qab Brazing yog kom ntxuav cov khoom seem flux thiab cov seem tawm ntawm kev kho tshav kub kub yog tias tsim nyog.Ua raws li cov flux thiab kev siv brazing siv, residual flux tuaj yeem ntxuav nrog dej, mechanically ntxuav.Yog hais tias abrasive siv los ntxuav cov ntawv seem lossis oxide zaj duab xis nyob rau hauv thaj chaw rhuab nyob ze ntawm kev sib koom ua ke, xuab zeb lossis metrallic zoo ncuav yuav tsum tau siv.Qhov ua tau los ntawm martensitic stainless hlau thiab nag lossis daus hartheration stainless hlau xav tau kev kho cua sov raws li cov ntaub ntawv tshwj xeeb ntawm cov khoom tom qab crazing.Stainless hlau pob qij txha tsoo tsoo nrog ni cr