Welding wani tsari ne wanda kayan aikin da za a yi wa walda ( iri ɗaya ko daban-daban) ana haɗa su ta hanyar dumama ko matsa lamba ko duka biyu, tare da ko ba tare da kayan filler ba, ta yadda kayan aikin ke haɗawa tsakanin atom don samar da dindindin dindindin. haɗi.To, menene mabuɗin da kuma matakan kariya don walda bakin karfe?
Kayan aikin walda na Xinfa yana da halaye masu inganci da ƙarancin farashi.Don cikakkun bayanai, da fatan za a ziyarci:Welding & Yanke Manufacturers - China Welding & Yanke masana'anta & Suppliers (xinfatools.com)
Wadanne na'urori ne ake amfani da su don walda bakin karfe?
Bakin karfe na walda sanduna za a iya raba zuwa chromium bakin karfe walda sanduna da chromium-nickel bakin karfe walda sanduna.Waɗancan nau'ikan sandunan walda guda biyu waɗanda suka dace da ƙa'idodin ƙasa za a tantance su bisa ga ma'auni na ƙasa GB/T983-2012.
Bakin karfe na Chromium yana da wasu juriya na lalata (oxidizing acid, Organic acid, cavitation), juriya na zafi da juriya na lalata.Yawancin lokaci ana zaɓa azaman kayan aiki don tashoshin wutar lantarki, masana'antar sinadarai, man fetur da sauransu.Koyaya, bakin karfe na chromium gabaɗaya yana da ƙarancin walƙiya, don haka yakamata a biya hankali ga tsarin walda, yanayin kula da zafi da zaɓin sandunan walda masu dacewa.
Chromium-nickel bakin karfe walda sanduna da kyau lalata juriya da hadawan abu da iskar shaka juriya kuma ana amfani da ko'ina a cikin sinadarai masana'antu, taki, man fetur, da kuma likita inji masana'antu.Domin ya hana intergranular lalata saboda dumama, waldi halin yanzu kada ya zama ma girma, wanda shi ne game da 20% kasa da na carbon karfe electrodes.Gilashin bai kamata ya yi tsayi da yawa ba, kuma masu shiga za su yi sanyi da sauri.Ƙaƙwalwar ƙyallen walda ya dace.
Mabuɗin mahimmanci da matakan kariya don walda bakin karfe
1. Yi amfani da wutar lantarki tare da halaye na waje na tsaye, kuma amfani da polarity mai kyau don DC (an haɗa wayar walda zuwa sanda mara kyau)
1. Yana da kullum dace da walda bakin ciki faranti kasa 6mm.Yana da halaye na kyakkyawan siffar walda da ƙananan nakasar walda.
2. Gas mai karewa shine argon tare da tsabta na 99.99%.Lokacin da waldi halin yanzu ne 50 ~ 150A, da argon gas kwarara ne 8 ~ 10L / min;lokacin da halin yanzu shine 150 ~ 250A, iskar gas na argon shine 12 ~ 15L / min.
3. Tsawon tsayin da aka yi na tungsten electrode daga bututun iskar gas ya fi dacewa 4 zuwa 5 mm.A wuraren da ke da kariya mara kyau irin su fillet welds, yana da 2 zuwa 3 mm.A cikin wurare masu zurfi, yana da 5 zuwa 6 mm.Nisa daga bututun ƙarfe zuwa aikin gabaɗaya bai wuce 15mm ba.
4. Don hana faruwar ramukan walda, duk wani tsatsa, tabon mai, da sauransu a ɓangaren walda dole ne a tsaftace su.
5. A waldi baka tsawon ne zai fi dacewa 2 ~ 4mm lokacin waldi talakawa karfe, da kuma 1 ~ 3mm lokacin waldi bakin karfe.Idan ya yi tsayi da yawa, tasirin kariyar zai zama mara kyau.
6. A lokacin haɗin gindi, don hana gefen baya na bead ɗin walda na ƙasa ya zama oxidized, gefen baya kuma yana buƙatar kariya ta gas.
7. Domin ya sa argon gas da kyau kare waldi pool da kuma sauƙaƙe aikin walda, tsakiyar layi na tungsten lantarki da workpiece a waldi wuri ya kamata kullum kula da wani kwana na 80 ~ 85 °, da kuma kwana tsakanin filler waya da saman workpiece ya kamata a matsayin karami kamar yadda zai yiwu.Gabaɗaya yana kusan 10 °.
8. Mai hana iska da iska.A wuraren da ake iska mai ƙarfi, tabbatar da ɗaukar matakan toshe gidajen sauro, da ɗaukar matakan iskar da suka dace a cikin gida.
2. Mahimman bayanai da matakan kariya don waldawar MIG na bakin karfe
1. Yi amfani da lebur halayyar walda ikon tushen, da kuma amfani da baya polarity ga DC (welding waya da alaka da tabbatacce electrode)
2. Gabaɗaya, ana amfani da argon mai tsabta (99.99% tsarki) ko Ar + 2% O2, kuma ana amfani da ƙimar kwararar 20 ~ 25L / min.
3. Tsawon baka.MIG waldi na bakin karfe gabaɗaya ana welded a ƙarƙashin yanayin canjin feshi, kuma yakamata a daidaita ƙarfin lantarki zuwa tsayin baka na 4 zuwa 6 mm.
4. Mai hana iska.MIG walda yana samun sauƙin iska, kuma wani lokacin iska na iya haifar da pores.Don haka, yakamata a dauki matakan kariya daga iska a duk inda iska ya wuce 0.5m/sec.
3. Mabuɗin maki da kuma taka tsantsan ga bakin karfe juyi cored waya walda
1. Yi amfani da lebur halayyar walda ikon tushen, da kuma amfani da baya polarity a lokacin DC waldi.Kuna iya amfani da waldar CO2 na yau da kullun don walda, amma da fatan za a sassauta matsa lamba akan dabaran ciyarwar waya dan kadan.
2. A m gas ne kullum carbon dioxide gas, da kuma gas kwarara kudi ne 20 ~ 25L / min.
3. A dace nisa tsakanin waldi tip da workpiece ne 15 ~ 25mm.
4. Dry tsawo tsawo, da janar waldi halin yanzu ne game da 15mm lokacin da waldi halin yanzu ne a kasa 250A, kuma game da 20 ~ 25mm lokacin waldi halin yanzu yana sama da 250A ne mafi dace.
Lokacin aikawa: Dec-28-2023
