I-Welding yinqubo lapho izinto zokwakha ezizoshiselwa (izinhlobo ezifanayo noma ezahlukene) zihlanganiswa ngokushisa noma ingcindezi noma zombili, noma ngaphandle kwezinto zokugcwalisa, ukuze izinto zokwakha ziboshwe phakathi kwama-athomu ukuze kwakheke unomphela. uxhumano. Ngakho-ke yimaphi amaphuzu abalulekile kanye nezinyathelo zokuphepha zokushisela insimbi engagqwali?
Imishini yokushisela i-Xinfa inezici zekhwalithi ephezulu nenani eliphansi. Ukuze uthole imininingwane, sicela uvakashele:Abakhiqizi Bezinto Zokushisela Nezokusika - Imboni Yokushisela Nokusika YaseChina Nabahlinzeki (xinfatools.com)
Imaphi ama-electrode asetshenziselwa ukushisela insimbi engagqwali?
Izinti zokushisela zensimbi engagqwali zingahlukaniswa zibe izinti zokushisela zensimbi engenasici ye-chromium kanye nezinduku zokushisela zensimbi engagqwali ye-chromium-nickel. Lezo zinhlobo ezimbili zezinduku zokushisela ezihlangabezana nezinga likazwelonke zizohlolwa ngokwezinga likazwelonke le-GB/T983-2012.
Insimbi engagqwali ye-Chromium inokumelana nokugqwala okuthile (ama-oxidizing acid, ama-organic acid, i-cavitation), ukumelana nokushisa nokumelana nokugqwala. Imvamisa ikhethwa njengempahla yemishini yeziteshi zikagesi, imboni yamakhemikhali, i-petroleum nokunye. Kodwa-ke, insimbi engagqwali ye-chromium ngokuvamile ayinakho ukushisela okubi, ngakho-ke kufanele kuqashelwe inqubo yokushisela, izimo zokwelashwa kokushisa nokukhethwa kwezinduku zokushisela ezifanele.
Izinduku zokushisela zensimbi engenasici ye-Chromium-nickel zinokumelana nokugqwala okuhle nokumelana ne-oxidation futhi zisetshenziswa kakhulu embonini yamakhemikhali, umanyolo, uphethiloli, kanye nokukhiqizwa kwemishini yezokwelapha. Ukuze uvimbele ukugqwala kwe-intergranular ngenxa yokushisa, i-welding current akufanele ibe nkulu kakhulu, engaphansi kuka-20% kunaleyo ye-carbon steel electrode. I-arc akufanele ibe yinde kakhulu, futhi ama-interlayers azopholisa ngokushesha. Ubuhlalu obuyi-weld obuncane bufanelekile.
Amaphuzu abalulekile kanye nezinyathelo zokuphepha zokushisela insimbi engagqwali
1. Sebenzisa ugesi onezici zangaphandle ezime mpo, futhi usebenzise i-polarity ephozithivu ye-DC (intambo yokushisela ixhunywe esigxotsheni esinegethivu)
1. Ngokuvamile kufanelekile ukushisela amapuleti amancane angaphansi kuka-6mm. Inezici zomumo omuhle we-welding seam kanye ne-welding deformation encane.
2. Igesi evikelayo i-argon enobumsulwa be-99.99%. Lapho i-welding current ingu-50 ~ 150A, ukugeleza kwegesi ye-argon kungu-8 ~ 10L/min; lapho okwamanje kungu-150~250A, ukugeleza kwegesi ye-argon kungu-12~15L/min.
3. Ubude obuphumayo be-electrode ye-tungsten busuka kubhobho yegesi buhle bungu-4 kuya ku-5 mm. Ezindaweni ezinezivikelo ezingezinhle ezifana nokushisela kwe-fillet, ingu-2 kuya ku-3 mm. Ezindaweni ezinemifantu ejulile, ingu-5 kuya ku-6 mm. Ibanga ukusuka ku-nozzle ukuya emsebenzini ngokuvamile alikho ngaphezu kuka-15mm.
4. Ukuze uvimbele ukuvela kwe-welding pores, noma yikuphi ukugqwala, amabala amafutha, njll engxenyeni ye-welding kufanele ihlanzwe.
5. Ubude be-arc yokushisela kungcono kube ngu-2 ~ 4mm lapho ushisela insimbi evamile, kanye no-1 ~ 3mm lapho ushisela insimbi engagqwali. Uma kuyinde kakhulu, umphumela wokuvikela uzoba mubi.
6. Ngesikhathi sokubopha izinqe, ukuze kuvinjwe uhlangothi olungemuva lwe-weld bead engezansi ekubeni lufakwe i-oxidized, uhlangothi olungemuva nalo ludinga ukuvikelwa ngegesi.
7. Ukuze wenze igesi ye-argon ivikele kahle i-welding pool futhi kube lula ukusebenza kokushisela, umugqa ophakathi we-electrode ye-tungsten kanye nendawo yokusebenza endaweni yokushisela kufanele ngokuvamile igcine i-angle engu-80 ~ 85 °, kanye ne-engeli phakathi i-filler wire kanye nobuso be-workpiece kufanele ibe mncane ngangokunokwenzeka. Ngokuvamile kuba ngu-10°.
8. Ivikela umoya futhi ingena umoya. Ezindaweni ezinomoya, qiniseka ukuthi uthatha izinyathelo zokuvimba amanetha, futhi uthathe izinyathelo ezifanele zokungenisa umoya endlini.
2. Amaphuzu abalulekile kanye nezinyathelo zokuphepha zokushisela i-MIG yensimbi engagqwali
1. Sebenzisa umthombo wamandla wokushisela oyisici esiyisicaba, futhi usebenzise i-reverse polarity ye-DC (intambo yokushisela ixhunywe ku-electrode ephozithivu)
2. Ngokuvamile, i-argon ehlanzekile (i-99.99% ubumsulwa) noma i-Ar + 2% O2 isetshenziswa, futhi izinga lokugeleza lingcono kakhulu i-20 ~ 25L/min.
3. Ubude be-arc. Ukushisela kwe-MIG yensimbi engagqwali kuvame ukushiselwa ngaphansi kwezimo zokuguquka kwesifutho, futhi i-voltage kufanele ilungiswe ibe ubude be-arc obungu-4 kuya ku-6 mm.
4. Ukuvikela umoya. Ukushisela kwe-MIG kuthinteka kalula umoya, futhi ngezinye izikhathi umoya ohelezayo ungabangela izimbotshana. Ngakho-ke, izinyathelo zokuvikela umoya kufanele zithathwe nomaphi lapho isivinini somoya singaphezu kuka-0.5m/sec.
3. Amaphuzu abalulekile kanye nezinyathelo zokuphepha zokushisela i-stainless steel flux cored wire welding
1. Sebenzisa umthombo wamandla wokushisela oyisici esiyisicaba, futhi usebenzise i-polarity ehlehlayo ngesikhathi sokushisela i-DC. Ungasebenzisa isishiseli esivamile se-CO2 ukushisela, kodwa sicela ukhulule kancane ingcindezi esondweni lokuphakelayo ngocingo.
2. Igesi evikelayo ngokuvamile igesi ye-carbon dioxide, futhi izinga lokugeleza kwegesi liyi-20~25L/min.
3. Ibanga elifanele phakathi kwephuzu lokushisela kanye ne-workpiece liyi-15 ~ 25mm.
4. Ubude besandiso esomile, i-welding current ejwayelekile imayelana ne-15mm lapho i-welding current ingaphansi kuka-250A, futhi mayelana ne-20 ~ 25mm lapho i-welding current ingaphezu kuka-250A ifaneleka kakhulu.
Isikhathi sokuthumela: Dec-28-2023
