Brass welding tom tsev

2024 Tus sau: Howard Calhoun | [email protected]. Kawg hloov kho: 2023-12-17 10:28

Kev nyuaj feem ntau tshwm sim hauv kev ua cov hlau tsis muaj hlau, vim lawv lub cev hloov pauv ntawm qhov kub thiab txias. Brass welding tsim nyog tau txais kev saib xyuas tshwj xeeb, thaum lub sijhawm zinc nquag evaporated. Txawm hais tias muaj teeb meem uas twb muaj lawm, nws muaj peev xwm ua haujlwm nrog cov hlau no hauv tsev.

Cov khoom siv tseem ceeb thiab tau txais

Ua ntej welding tooj dag yog xav paub meej, nws yog ib qho tsim nyog yuav tsum paub koj tus kheej nrog cov yam ntxwv ntawm cov khoom nws tus kheej. Qhov sib xyaw ntawm cov hlau muaj xws li ob lub hauv paus hlau - tooj liab thiab zinc. Cov ntsiab lus ntawm qhov kawg ntawm lawv tuaj yeem sib txawv li ntawm 5-45 feem pua. Nws yog qhia tsis tau tsuas yog los txhim kho lub cev lub cev, tab sis kuj txo tus nqi ntawm cov khoom kawg.

Ntau cov khoom lag luam yog ua los ntawm tooj dag. Cov no suav nrog txhua yam ntawm bushings, adapters, kav dej thiab ntau yam khoom zoo nkauj. Thaum lub sijhawm lawv tsim khoom, cov ntsiab lus alloying tuaj yeem ntxiv uas cuam tshuam rau cov yam ntxwv zoo:

• tin txhim kho corrosion kuj:
• txhuas me ntsis txo cov volatility ntawm zinc;
• silicon txhim kho weldability ntawmpoob zog me ntsis;
• txhuas ua rau nws tuaj yeem tau txais cov khoom nyuaj tsawg rau kev txiav yooj yim.

Zinc thiab tooj liab blanks, nrog rau qee yam ntawm lwm yam hlau, ua raws li cov khoom siv raw rau kev tsim cov hlau. Qee zaum, cov khoom pov tseg ntawm tus kheej tuaj yeem siv tau. Melting yog nqa tawm nyob rau hauv cov chav nrog cua tso pa siv induction furnaces.

nyuaj thaum tsim ib qho kev sib txuas

Yuav kom tooj dag vuam hauv tsev ua tau zoo thiab nyab xeeb, koj yuav tsum paub txog cov teeb meem. Kev sib txuas mus tas li tau txais los ntawm cov cua sov hauv zos tsuas yog txhim khu kev qha yog tias muaj raws li cov kev cai tshwj xeeb. Thaum lub sijhawm ua haujlwm, ib tus yuav tsum tsis txhob hnov qab txog kev ntsuas kev nyab xeeb, txij li cov pa phem raug tso tawm thaum raug cua sov.

Qhov teeb meem tseem ceeb nyob hauv qhov kub hnyiab ntawm zinc, uas cuam tshuam nrog nws qhov qis melting point (tsuas yog 419 degrees). Feem ntau ntawm cov khoom evaporates thaum ua haujlwm. Qee qhov no cuam tshuam nrog oxygen, tsim cov hmoov dawb, uas tom qab ntawd npog thaj chaw ze ntawm lub seam.

Ceev faj ua haujlwm

Tus kheej-welding tooj dag yuav tsum tsis txhob ua rau muaj kev phom sij rau tib neeg lub cev. Vim muaj kev nce ntxiv ntawm kev tso tawm cov tshuaj tsis haum, lub tshuab ua pa yuav tsum tau siv thaum ua haujlwm. Txawm tias thaum siv cov txheej txheem tshwj xeeb, kev kub ntxhovzinc muaj li ntawm 25 mus rau 30 feem pua.

Nws tsis raug tso cai ua cov haujlwm vuam ze ze ntawm cov khoom thiab cov khoom uas ignite sai heev. Yuav tsum tsis txhob muaj roj av, ntoo shavings, cab lossis roj cylinders nyob ze ntawm qhov chaw ua haujlwm tam sim ntawd. Yam yuavtsum tau kawm uantej yog qhov muaj qhov cua hauv chav.

ntsuas los npaj cov ntsiab

Thaum vuam nyias tooj dag, tsis tas yuav tsum tau preheat. Thaum txuas cov khoom loj, nws raug nquahu kom ua kev kho cua sov hauv zos. Kev npaj ntug yuav tsis ua rau cov khoom nrog lub thickness ntawm 1.5-6 hli.

Yog tias cov ntsiab lus muaj qhov loj dua, ces nyob rau hauv txhua rooj plaub, yuav tsum tau txiav V-shaped seams. Nws yog qhov yooj yim, tab sis tsis zoo. Nws yog qhov zoo tshaj plaws los ua ib qho X-shaped txiav, uas lub kaum sab xis qhib yuav yog 30-45 degrees ntawm txhua sab.

Hom thiab kev sib piv ntawm cov cuab yeej siv

Ntau zaus tooj dag yog welded nrog argon. Kev siv thev naus laus zis ntawm kev sib txuas hauv ib puag ncig inert yog suav tias yog qhov zoo tshaj plaws, vim nws tso cai rau koj kom ua tiav kev ua haujlwm siab. Lwm qhov zoo ntawm qhov kev xaiv no suav nrog:

• muaj peev xwm tau txais cov seams nrog meej geometry thiab huv si;
• kev tsis sib xws ntawm cov qauv hauv qhov chaw ntawm kev sib txuas mus tas li;
• kev ntseeg ntawm cov pob qij txha;
• kev lag luam vim kev siv pheej yig tungsten electrodes.

Lwm thev naus laus zis yog roj vuam. Nws tsis cuam tshuam nrog kev siv lub zog hluav taws xob, uas qee zaum muaj kev ncaj ncees heev. Nrog nws txoj kev siv, nws muaj peev xwm tswj tau lub zog ntawm cov nplaim hluav taws xob tawm hauv qhov dav dav. Nrog rau txoj kev xaiv ntawm cov ntaub ntawv muab tub lim, cov welds zoo yog tsim.

Argon vuam ntawm tooj dag: txheej txheem piav qhia

Qhov chaw tiv thaiv roj av muab lub sijhawm los daws qee qhov teebmeem tsis zoo. Vuam ntawm bronze thiab tooj dag nrog qhov kev xaiv no yuav siv qhov chaw siv tam sim no ncaj qha nrog polarity. Vim muaj qhov tshwm sim ntau ntawm kev kub hnyiab, nws raug nquahu kom ua qhov chaw docking nrog qhov ntev arc.

Cov electrode tau muab tso rau hauv lub qhov cub, uas yog lub tshuab hluav taws xob. Tom qab ntawd, chav tsev yog qhib. Kev ua haujlwm nws tus kheej yog nrog los ntawm kev nce crackling, uas tshwm sim vim qhov tso tawm ntawm zinc fumes. Cov xaim muab tub lim yog muab tso rau hauv lub seam manually.

Cov khoom sib xyaw ua ke los ntawm cov menyuam sib cais, tsis yog los ntawm kev siv tshuab ua noj tas li. Thaum sau lub crater, nws yog ntshaw kom txo cov arc voltage me ntsis. Nyob rau theem kawg, nws yuav tsum tau muab tshem tawm mus rau sab. Kev khiav hauj lwm voltage yuav tsum tsis txhob txo tam sim ntawd, tab sis maj mam.

Siv cov khoom siv roj

Hauv thaj chaw uas tsis muaj hluav taws xob, siv tshuab arc siv tsis tau. Txawm li cas los xij, nyob rau hauv cov ntaub ntawv no, roj welding ntawm tooj dag yog qhov zoo heev. Thaum siv nws, kev sib txuas muaj zog tau txais, txawm li cas los xij, kev ua haujlwm yuav tsum tau uaCov khoom phom sij uas, ua ke nrog oxygen, tsim cov khoom tawg.

Ntau dhau evaporation ntawm zinc tuaj yeem zam tau thaum ua haujlwm los ntawm kev siv cov nplaim hluav taws xob oxidizing hauv lub tshuab ua haujlwm. Yuav tsum muaj oxygen ntau dua li hydrogen. Thaum ua tiav cov kev sib koom ua ke, cov yeeb yaj kiab oxide tshwm rau ntawm qhov chaw, uas tso cai rau qee qhov kev tiv thaiv ib puag ncig qhov chaw los ntawm zinc emissions.

Thaum vuam, muab tub lim xaim pom zoo kom muab tso rau ntawm lub kaum sab xis ntawm 15 txog 30 degrees rau sab ntug. Transverse oscillations yuav tsum zam thaum lub sijhawm ua haujlwm. Lub teeb yuav tsum nyob ntawm lub kaum sab xis ntawm 70 txog 80 degrees rau lub workpiece.

Cov khoom siv muab tso rau saum lub molten da dej ncaj qha rau hauv cov nplaim taws. Tsis txhob muab cov kab uas siv rau hauv lub seam sab hauv. Thaum tsav tsheb, nws yog ntshaw kom ua raws li ib qho kev ceev. Feem ntau nws yog 15-25 cm ib feeb.

Yog tias cov khoom siv ntawm cov tuab tuab txuas nrog, lawv yuav tsum muab tso rau ntawm lub kaum sab xis ntawm 10 txog 15 degrees rau lub qab ntug. Vuam yog nqa tawm ntawm qhov nce. Raws li txoj cai, cov pob qij txha qab nthab tsis tau ua nyob rau hauv rooj plaub no, vim tias cov khoom yog kua.

Vuam nrog lwm yam hlau thiab alloys

Qee zaum koj yuav tsum muab tooj dag nrog lwm cov khoom sib txawv. Hauv qhov no, koj yuav tsum paub txog cov yam ntxwv ntawm kev ua haujlwm zoo li no. Thaum ua ke nrog cov hlau, qee qhov teeb meem yuav tshwm sim, uas yog txuam nrog ntau yam physico-chemicalyam ntxwv ntawm ob lub alloys.

Ib qho tsis xws luag hauv vuam yog qhov tshwm sim ntawm cov kab nrib pleb ntawm cov hlau ncaj qha hauv qab txheej tooj dag. Txhawm rau txo qhov kev pheej hmoo ntawm qhov tsis xws luag, nws raug nquahu kom siv cov nickel alloy. tungsten-electrode argon-arc tshuab yog qhov zoo tshaj plaws.

Kev sib xyaw titanium nrog tooj liab alloys tuaj yeem ua rau tsim cov tshuaj lom neeg nkig. Cov txiaj ntsig zoo tshaj plaws yog ua tiav thaum siv cov khoom siv nruab nrab. Lawv yog ua los ntawm titanium alloyed nrog niobium los yog molybdenum. Qee zaum, kev siv cov hlau sib xyaw ua ke tau tso cai.

Hais txog lub cev lub cev, niobium muaj ntau txoj hauv kev zoo ib yam li titanium, yog li nws welds txaus siab nrog tooj dag. Txawm li cas los xij, kev ua haujlwm yuav tsum tau ua nyob rau hauv ib puag ncig inert. Cov chav tshwj xeeb feem ntau yog siv nyob rau hauv uas cov huab cua tswj tau tag nrho.

Nws yuav tsum tau muab sau tseg tias cov cuab yeej siv ntawm tooj dag vuam muaj nws tus yam ntxwv, uas yuav tsum tau coj mus rau hauv tus account thaum tsim cov pob qij txha mus tas li hauv tsev yam tsis muaj kev koom tes ntawm cov kws tshaj lij. Thaum kawm tag nrho cov intricacies ntawm cov txheej txheem, nws yog qhov tseeb heev kom ua tiav qhov kev sib txuas zoo ntawm workpieces. Raws li kev xaiv cov txheej txheem, nws feem ntau nyob ntawm qhov muaj cov cuab yeej tshwj xeeb thiab cov xwm txheej ntawm kev ua haujlwm.