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 biyun, tare da ko ba tare da cika kayan ba, ta yadda kayan aikin ke haɗawa tsakanin atom don samar da haɗi.Don haka menene mahimman abubuwan da sanarwa donbakin karfe waldi?
Menene electrode ake amfani dashi don walda bakin karfe?
1.Stainless karfe electrodes za a iya raba chromium bakin karfe electrodes da chromium-nickel bakin karfe electrodes.Waɗanda ke cikin waɗannan nau'ikan na'urorin lantarki guda biyu waɗanda suka dace da ma'aunin ƙasa za a tantance su bisa ma'aunin GB/T983-2012 na ƙasa.
2.Chromium bakin karfe yana da wasu juriya na lalata (oxidizing acid, Organic acid, cavitation) juriya na zafi da juriya na lalata.Yawancin lokaci ana zaɓar kayan aiki don tashar wutar lantarki, masana'antar sinadarai, man fetur da sauransu.Duk da haka, da walda ikon chromium bakin karfe ne kullum matalauta, kuma ya kamata a mai da hankali biya zuwa waldi tsari, zafi magani yanayi da kuma zaɓi na dace waldi lantarki.
3.Chromium-nickel bakin karfe electrodes da kyau lalata juriya da hadawan abu da iskar shaka juriya, kuma ana amfani da ko'ina a cikin sinadaran, taki, man fetur, da kuma likita inji masana'antu.Domin ya hana intergranular lalata saboda dumama, da waldi halin yanzu kada ya zama ma girma, wanda shi ne game da 20% kasa da na carbon karfe electrodes. The baka kada ya zama tsayi da yawa, da interlayers suna sanyaya da sauri, kunkuntar katako waldi ne dace.
Bakin Karfe Wuraren Welding da Sanarwa
Ana amfani da wutar lantarki tare da halaye na waje na tsaye, kuma ana amfani da polarity mai kyau don DC (an haɗa wayar walda zuwa sanda mara kyau)
1.It ne kullum dace waldi bakin ciki farantin karfe kasa 6mm.Yana da halaye na kyakkyawan siffar walda da ƙananan nakasar walda.
2.The kariya gas ne argon tare da tsarki na 99.99%.Lokacin da walƙiya halin yanzu ne 50 ~ 150A, da kwarara kudi na argon gas ne 8 ~ 10L / min, a lokacin da halin yanzu ne 150 ~ 250A, da kwarara kudi na argon gas ne 12 ~ 15L / min.
3.The protruding tsawon tungsten lantarki daga gas bututun ƙarfe ne zai fi dacewa 4 ~ 5mm.Yana da 2 ~ 3mm a wuraren da ke da kariya mara kyau kamar waldar fillet, da 5 ~ 6mm a wuraren da ramin yana da zurfi.Nisa daga bututun ƙarfe zuwa aikin gabaɗaya bai wuce 15mm ba.
4. Don hana porosity walda, idan akwai tsatsa da mai tabo a kan sassan walda, dole ne a tsaftace shi.
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 kariya ba zai yi kyau ba.
6. Lokacin da gindin gindi, don hana bayan ƙwanƙwasa walda na ƙasa daga samun iskar oxygen, bayan kuma yana buƙatar kariya ta gas.
7. Domin yin argon gas da kyau kare waldi pool da kuma sauƙaƙe aikin walda, tsakiyar layi na tungsten lantarki da workpiece a wurin waldi 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. Rashin iska da samun iska.Inda akwai iska, da fatan za a ɗauki matakan toshe gidan yanar gizon, da ɗaukar matakan iskar da suka dace a cikin gida.
Lokacin aikawa: Afrilu-26-2023