Sei ma weld esimbi isina ngura achishandisa FCAW achiramba achikundikana kuongororwa? David Meyer naRob Koltz vanonyatsoongorora zvikonzero zvekukundikana uku. Getty Images
Mubvunzo: Tiri kugadzirisa mascrapers esimbi akasungirirwa mudhiraivha munzvimbo ine mvura. Maweld edu akatadza kuongororwa nekuda kwekuoma, kuchekwa kwepasi uye maweld akatsemuka. Takabatanidza A514 kuA36 tichishandisa dhayamita ye0.045″, nzvimbo yese, ine cored ye309L, 75% Argon/25% Carbon Dioxide gas kuti irambe yakasakara zviri nani.
Takaedza maelectrode esimbi yekabhoni, asi ma welds akapera nekukurumidza uye takaona kuti simbi isingatsvedzeri inoshanda zviri nani. Ma welds ese anoitwa ari panzvimbo yakati sandara, 3/8 inch. Nekuda kwekushomeka kwenguva, ma welds ese akaitwa panguva imwe chete. Chii chingakonzera kuti ma welds edu asashande?
Kucheka pasi kunowanzo kukonzerwa nemaparamita ekuwelda asina kutsanangurwa, nzira yekuwelda isina kunaka, kana zvese zviri zviviri. Hatigone kutaura nezvemaparamita ekuwelda nekuti hatiazive. Kucheka pasi kunoitika pa1F kunowanzo kukonzerwa nekushanda kwakanyanya kweweld puddle kana kumhanya kwakanyanya kana kunonoka kufamba.
Sezvo muchina wekunamira ari kuedza kuisa 3/8″. Mikana yekubata torch zvakanyanya inogona kunge iri chimwe chezvikonzero zvekunamira mafillets ega newaya diki ine dhayamita diki ine flux-core. Zvisinei, zvinoita sekunge iri kushandisa chishandiso chisiri icho chiri kushanda pane dambudziko rehunyanzvi, ndosaka.
Kuboorwa kunokonzerwa nekusachena kuri mu weld, kurasikirwa kana kuwanda kwegasi rinodzivirira, kana kunyudzwa kwakawanda kwewaya ine flux-core. Unotaura kuti iri ibasa rekugadzirisa pane weld media iri mukati me dryer, saka kana welds dzisina kucheneswa zvakakwana, izvi zvinogona kunge zviri izvo zvinokonzera ma voids.
Simbi yekuzadza yauri kushandisa ndeye waya dzese dzakagadzirwa ne position flux, idzi mhando dzewaya dzine system ye slag inotonhora nekukurumidza. Izvi zvinodiwa kuti utsigire dhaka re weld paunenge uchisveta wakamira kumusoro kana pamusoro. Dambudziko re slag inotonhora nekukurumidza nderekuti inooma pamberi pedziva re weld riri pasi payo. Kana magasi achiri kuburitswa, anowanzo vharirwa uye anozoonekwa gare gare muchimiro chemaburi kana mapombi epamusoro. Izvi zvinowedzerwa kana uchisveta panzvimbo yakati sandara newaya diki dhayamita uye uchiedza kuisa weld hombe mu pass imwe chete, semushandisiro wako.
Kutsemuka kweweld pakutanga nepakumira kweweld kunogona kukonzerwa nezvikonzero zvakasiyana-siyana. Sezvo uri kuisa bead hombe newaya diki ine dhayamita, ungangosangana nekubatana kusina kukwana (LOF) pamudzi weweld. Kutsemuka kweweld chiitiko chinowanzoitika nekuda kwekumanikidzwa kwakanyanya kweweld uye LOF pamudzi.
Pahukuru hwewaya iyi, unofanira kushandisa mapasi maviri kana matatu kuti upedze 3/8 ye inchi. Kubatanidza mafillet, hapana mumwe munhu. Ungawana zvichikurumidza kugadzira maweld matatu asina kukanganisa pane kugadzira weld imwe chete isina kukanganisa wobva waigadzirisa.
Zvisinei, imwe nyaya inogona kuita basa guru mukupwanyika kwesimbi ndeyekusakwana kweferrite musimbi, iyo inowanzova chikonzero chikuru chekupwanyika. Waya ye309L yakagadzirwa kuti ishandiswe kusanganisa simbi isingatsvedzeri nesimbi yekabhoni pane simbi isingatsvedzeri nesimbi isingatsvedzeri. Kemikari chaiyo yesimbi iyi inotarisisawo kusanganiswa kwesimbi yesimbi dzese dziri mbiri. Nokudaro, mukushandiswa kwesimbi isingatsvedzeri nesimbi isingatsvedzeri, mamwe ma alloys anobva kusimbi isingatsvedzeri anobatsira kuenzana kwemakemikari uye kugadzira huwandu hwakanaka hweferrite. Kushandisa simbi inozadza ine ferrite inosvika 50%, senge 312 kana 2209, kuchabvisa mukana wekupwanyika nekuda kwehuwandu hushoma hweferrite.
Nzira yakanakisisa yekudzivirira kupfekwa ndeyekusveta jointi ne electrode yekabhoni kana yesimbi isina ngura wobva waisa electrode yepamusoro. Zvisinei, wakataura kuti waive nenguva shoma uye kuti chero mamiriro ekusveta akawanda aisagona kufungwa.
Edza kushandura kuita waya yakakura dhayamita, senge 1/16 inch kana yakakura. Kushandisa waya ine flux-core ine gasi kwakanakira nekuti inopa kuchenesa kuri nani kwe weld uye dziviriro iri nani yemhepo kupfuura waya dzisina flux-core. Zvisinei, pachinzvimbo chewaya ine nzvimbo yese, waya yakatsetseka uye yakatwasuka chete ndiyo inogona kuderedza porosity kana tracking yehonye. Unofanirawo kushandura filler metal kubva pa309L kuenda ku312 kana 2209.
WELDER, yaimbonzi Practical Welding Today, inoratidza vanhu chaivo vanogadzira zvigadzirwa zvatinoshandisa uye zvatinoshanda nazvo zuva nezuva. Magazini iyi yave ichishandira nharaunda yevanosanganisa simbi muNorth America kwemakore anopfuura makumi maviri.
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