1. Firimu reokisidhi:
Aluminium iri nyore kwazvo kuita oxidize mumhepo uye panguva yewelding. Izvo zvinokonzerwa nealuminium oxide (Al2O3) ine nzvimbo yakakwirira yekunyunguduka, yakagadzikana, uye yakaoma kubvisa. Inotadzisa kunyunguduka nekusanganiswa kwezvinhu zvevabereki. Iyo oxide firimu ine yakakwirira chaiyo giravhiti uye haisi nyore kuyangarara kumusoro. Zviri nyore kugadzira hurema hwakadai se slag kuisirwa, kusakwana fusion, uye kupinda kusina kukwana.
Iyo yepamusoro oxide firimu yealuminium uye kutorwa kwehuwandu hwakawanda hwehunyoro kunogona kukonzera nyore pores mune weld. Usati waputira, makemikari kana michina nzira dzinofanirwa kushandiswa kunyatsochenesa pasi uye kubvisa pamusoro peiyo oxide firimu.
Simbisa dziviriro panguva yewelding process kudzivirira oxidation. Paunenge uchishandisa tungsten inert gasi welding, shandisa AC simba kubvisa iyo oxide firimu kuburikidza ne "cathode yekuchenesa" maitiro.
Paunenge uchishandisa gasi welding, shandisa flux inobvisa iyo oxide film. Paunenge uchiputira mahwendefa akakora, kupisa kwekupisa kunogona kuwedzerwa. Semuenzaniso, helium arc ine kupisa kukuru, uye helium kana argon-helium yakavhenganiswa gasi inoshandiswa pakudzivirira, kana yakakura-yakanyunguduka electrode gasi shielded welding inoshandiswa. Muchiitiko chekubatanidza ikozvino kwakanaka, "cathode kuchenesa" haidiwi.
2. High thermal conductivity
Thermal conductivity uye chaiyo kupisa kugona kwearuminiyamu nearuminiyamu alloys ingangoita zvakapetwa kaviri iyo yekabhoni simbi uye yakaderera-alloy simbi. Thermal conductivity yealuminium inodarika zvakapetwa kagumi iyo yeaustenitic stainless simbi.
Munguva yekugadzira welding, huwandu hukuru hwekupisa hunogona kukurumidza kuitwa musimbi yepasi. Naizvozvo, kana welding aruminiyamu uye aruminiyamu alloys, kuwedzera kune simba rinopedzwa muakanyungudutswa simbi dziva, kwakawanda kupisa kunopedzwa zvisina basa mune zvimwe zvikamu simbi. Izvi Kushandiswa kwerudzi urwu rwesimba risina maturo kunonyanya kukosha kudarika kwesimbi welding. Kuti uwane majoini emhando yepamusoro-welded, simba rine simba rakanyanya uye simba guru rinofanira kushandiswa zvakanyanya sezvinobvira, uye dzimwe nguva preheating uye mamwe maitiro ekugadzirisa anogona kushandiswawo.
3. Yakakura mutsara wekuwedzera coefficient, nyore kukanganisa uye kuburitsa kupisa kwemafuta
Iyo mutsara yekuwedzera coefficient yealuminium uye aruminiyamu alloys ingangoita zvakapetwa kaviri iyo yekabhoni simbi uye yakaderera alloy simbi. Iyo vhoriyamu shrinkage yealuminium panguva yekusimba yakakura, uye deformation uye kushushikana kweiyo weldment yakakura. Naizvozvo, matanho anofanirwa kutorwa kudzivirira welding deformation.
Kana iyo aluminium welding yakanyungudutswa dziva inoomesa, zviri nyore kugadzira shrinkage cavities, shrinkage porosity, kupisa kunopisa uye kushushikana kwakanyanya kwemukati.
Xinfa welding midziyo ine hunhu hwemhando yepamusoro uye mutengo wakaderera. Kuti uwane ruzivo, ndapota shanya:Welding & Cutting Manufacturers - China Welding & Cutting Factory & Suppliers (xinfatools.com)
Matanho anogona kutorwa kugadzirisa kuumbwa kwewaya welding uye welding process kudzivirira kuitika kwekupisa kunopisa panguva yekugadzira. Kana kuora kwekudzivirira kuchibvumira, aluminium-silicon alloy welding waya inogona kushandiswa kupinza aruminiyamu alloys kunze kwealuminium-magnesium alloys. Kana iyo aluminium-silicon alloy ine 0.5% silicon, tsika yekupisa inopisa yakakura. Sezvo iyo silicon yemukati inowedzera, iyo crystallization tembiricha yemhando yealloy inova idiki, iyo fluidity inowedzera zvakanyanya, shrinkage rate inoderera, uye tsika yekupisa inopisa inodererawo zvinoenderana.
Zvinoenderana neruzivo rwekugadzira, kupisa kunopisa hakuzoitika kana iyo silicon yemukati iri 5% kusvika 6%, saka kushandisa SalSi strip (silicon yemukati 4.5% kusvika 6%) welding waya ichava nani kutsemuka kuramba.
4. Nyora nyungudutsa hydrogen
Aluminium uye aruminiyamu alloys anogona kunyungudutsa huwandu hukuru hwehaidhirojeni munzvimbo yemvura, asi isinganyanyise haidrojeni munzvimbo yakasimba. Munguva yekusimba uye nekukurumidza kutonhora kwechidziva chewelding, hydrogen haina nguva yekupukunyuka, uye maburi ehydrogen anogadzirwa nyore. Kunyorova kuri muarc column atmosphere, mwando unoyeverwa neooxide film pamusoro peiyo welding material uye base metal zvese zvakakosha zvehydrogen muweld. Naizvozvo, kunobva hydrogen kunofanira kunyatsodzorwa kudzivirira kuumbwa kwepores.
5. Majoini uye nzvimbo dzinopisa-zvinopisa zvinonyoroveswa nyore
Alloy zvinhu zviri nyore kubuda uye kupisa, izvo zvinoderedza kushanda kweweld.
Kana iyo simbi yepasi iri deformation-yakasimbiswa kana yakasimba-mhinduro zera-yakasimbiswa, kupisa kunopisa kunoderedza kusimba kwenzvimbo yakakanganiswa nekupisa.
Aluminium ine face-centered cubic lattice uye haina allotropes. Iko hakuna shanduko yechikamu panguva yekudziya uye kutonhora. Mbeu dzeweld dzinoita kunge dzakakora uye zviyo hazvigone kunatswa kuburikidza nekuchinja kwechikamu.
Welding nzira
Dzinenge nzira dzakasiyana-siyana dzewelding dzinogona kushandiswa kugadzira aruminiyamu nealuminium alloys, asi aruminiyamu nealuminium alloys ane akasiyana anochinjika kune akasiyana nzira dzewelding, uye nzira dzakasiyana dzewelding dzine nguva dzadzo dzekushandisa.
Gasi welding uye electrode arc welding nzira dziri nyore mumidziyo uye nyore kushanda. Gasi welding inogona kushandiswa kugadzirisa welding yealuminium sheets uye castings iyo isingade yakakwirira welding mhando. Electrode arc welding inogona kushandiswa kugadzirisa welding yealuminium alloy castings.
Iyo inert gasi yakadzivirirwa welding (TIG kana MIG) nzira ndiyo inonyanya kushandiswa nzira yearuminiyamu nealuminium alloys.
Aluminium uye aruminiyamu alloy mapepa anogona kugadzirwa ne tungsten electrode alternating ikozvino argon arc welding kana tungsten electrode pulse argon arc welding.
Aluminium nealuminium alloy makobvu mahwendefa anogona kugadziriswa ne tungsten helium arc welding, argon-helium yakasanganiswa tungsten arc welding, gasi simbi arc welding, uye pulse simbi arc welding. Gasi simbi arc welding uye pulse gasi simbi arc welding iri kuwedzera kushandiswa.
Nguva yekutumira: Jul-25-2024
