CCO SAW kupfeka ndiro 04-

1CCO simbi ndiro marasha chute001-

Sei single-pass Stainless steel welds vachishandisa FCAW nguva dzose vachitadza kuongorora?David Meyer naRob Koltz vanonyatsotarisa zvikonzero zvekutadza uku.Getty Images
Mubvunzo: Tiri kugadzirisa simbi dzakasungirirwa scrapers mu dryer system munzvimbo yakanyorova. Welds yedu yakakundikana kuongororwa nekuda kweporosity, undercuts uye kuputika welds. Weld A514 kusvika A36 tichishandisa 0.045 ″ dhayamita, nzvimbo yose, cored 309L, 75% Argon / 25% Carbon Dioxide gasi kuitira nani kupfeka kuramba.
Takaedza carbon steel electrodes, asi mawelds akapera nokukurumidza uye takawana simbi isina tsvina kuti iite zviri nani.Zvose zvinogadzirwa zvinogadzirwa munzvimbo yakatsetseka, 3/8 inch.Nekuda kwezvipingamupinyi zvenguva, zvose zvinoputika zvakaitwa panguva imwe chete. zvingakonzeresa kuti simbi dzedu dzikundikane?
Undercut kazhinji inoitika nekuda kwekunze kweiyo yakatarwa maparamita, nzira yekuwelding isina kufanira, kana zvese zviri zviviri.Hatigone kutaura nezve maparamita ewelding nekuti hatizvizive.Maundercuts anoitika pa1F anowanzo konzerwa nekunyanya kushanda kwe weld puddle kana kukurumidza kana kukurumidza kunonoka kufamba.
Sezvo mucheki ari kuyedza kuisa 3/8″.Kukwanisa kupfuudza mwenje wetochi kungangove kune chekuita nesingle-pass fillet welding ine diki diki flux-cored wire.Zvisinei, inoita kunge iri kushandisa chishandiso chisiri icho pabasa kwete. nyaya yehunyanzvi, ndosaka.
Porosity inokonzerwa netsvina muweld, kurasikirwa kana kuwanda kwekudzivirira gasi, kana kunyura kwakanyanyisa kunyorova kwe flux-cored wire. Iwe unotaura kuti iri ibasa rekugadzirisa pane wet media mukati meiyo dryer, saka kana welds isina kunyatsocheneswa. , izvi zvinogona kuva chikonzero chikuru chevoids.
Simbi yekuzadza yauri kushandisa ndeyese chinzvimbo flux cored wire, idzi mhando dzewaya dzine kukurumidza kutonhora slag system.Izvi zvinodiwa kuti utsigire weld puddle kana welding vertically kumusoro kana pamusoro.Kuipa kwekukurumidza kutonhora slag ndeyekuti inoomesa pamberi pe weld pool pazasi payo.Kana magasi achiri kuburitswa, anowanzova akabatwa uye anozoonekwa gare gare muchimiro chepores kana pamusoro pehonye tracks.Izvi zvinokuriswa kana welding munzvimbo yakati sandara ine dhayamita diki waya uye kuedza kuisa hombe. weld mune imwechete pass, senge mukushandisa kwako.
Weld cracking pakutanga uye kumira kweweld inogona kukonzerwa nezvikonzero zvakawanda.Sezvo uri kuisa bead hombe ine dhayamita diki waya, unogona kusangana nekusakwana fusion (LOF) pamudzi we weld. kutsemuka chinhu chinowanzoitika nekuda kweiyo yakasara weld stress uye LOF pamudzi.
Pakukura kwewaya iyi, unofanira kushandisa mapasi maviri kana matatu kuti upedze 3/8 ye inch. Fillet welds, hapana.Unogona kuzviwana nekukurumidza kugadzira matatu ane defect-free welds pane kugadzira one defective weld wobva waita gadzirisa.
Zvisinei, imwe nyaya inogona kuita basa guru mukuputsika kwe weld ndiyo nhanho isiriyo yeferrite mu weld, iyo inowanzova chikonzero chikuru chekuputika.309L waya yakagadziridzwa kuti iwedzere simbi isina tsvina kune carbon steel pane carbon steel kune carbon steel. .Iyo chaiyo weld chemistry yechigadzirwa ichi inofungawo nezveimwe base base metal dilution kune ese masimbi epasi.Saka, mustainless kune carbon steel application, mamwe maalloys anobva musimbi isina tsvina anobatsira kuenzanisa kemikari uye kugadzira huwandu hunogamuchirwa hweferrite.Kushandisa a simbi yekuzadza inosvika makumi mashanu muzana ferrite, senge 312 kana 2209, inobvisa mukana wekutsemuka nekuda kwekuderera kweferrite.
Nzira yakanakisa yekupa yakanakisa kusapfeka ndeye weld yejoini neyakajairwa kabhoni kana Stainless simbi electrode uye wobva wawedzera layer ye electrode yepamusoro.Zvisinei, wakataura kuti wanga uri pasi pezvipingaidzo zvenguva uye kuti chero multi-pass welding. mamiriro akanga asina mubvunzo.
Edza kutendeuka kune tambo yakakura yedhayamita, yakadai se 1/16 inch kana yakakura.Kushandisa gas-shielded flux-cored wire ndiyo yakanaka nokuti inopa zviri nani weld yekuchenesa uye kuchengetedzwa kwemhepo iri nani kupfuura dzisina-flux-cored wires.Zvisinei, panzvimbo ye waya yezvinzvimbo zvese, chete waya yakati sandara uye yakachinjika inogona kuderedza porosity kana kuronda honye.Unofanirwawo kushandura simbi yekuzadza kubva pa309L kuenda pa312 kana 2209.
WELDER, yaichimbova Practical Welding Nhasi, inoratidza vanhu chaivo vanogadzira zvigadzirwa zvatinoshandisa uye kushanda nazvo zuva nezuva. Magazini ino yakashandira nharaunda yewelding muNorth America kwemakore anopfuura 20.
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Nguva yekutumira: Jul-22-2022