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 kupfeka gasi / 25%.
Takaedza carbon steel electrodes, asi mawelds akapera nokukurumidza uye takawana simbi isina tsvina kuti iite zviri nani.Zvose zvinopisa zvinogadzirwa munzvimbo yakadzika uye 3 / 8 "yakareba.Nekuda kwezvipingamupinyi zvenguva, zvose zvinoputika zvakaitwa panguva imwe chete.Chii chingakonzera kuti welds yedu isakundikana?
Undercut inowanzoitika nekuda kwekunze kweiyo mapeji ekuwedha, nzira yewelding isina kufanira, kana zvese zviri zviviri.Hatigone kutaura nezve welding parameters nekuti hatizvizive.Undercuts dzinoitika pa1F dzinowanzokonzerwa nekunyanya kushanda kweweld puddle kana kukurumidza kana kunonoka kufamba.
Sezvo mucheki ari kuedza kuisa 3/8″.Mukana wekupfuudza mwenje we torch ungangove une chekuita nesingle-pass fillet welding nediki dhayamita flux-cored wire.Zvisinei, zvinoita kunge zviri kushandisa mudziyo usiri pabasa pane nyaya yehunyanzvi, ndosaka.
Porosity inokonzerwa nekusachena mu weld, kurasikirwa kana kuwanda kwekudzivirira gasi, kana kunyanya kunyorova kwemvura ye flux-cored wire.Iwe unotaura kuti iyi ibasa rekugadzirisa pane zvinyorwa zvakanyorova mukati memuomesi, saka kana welds asina kunyatsocheneswa, ichi chinogona kunge chiri chikonzero chikuru che voids.
The filler metal yauri kushandisa is all position flux cored wire, idzi wire types dzine a quick freezing slag system.Izvi zvinodiwa kutsigira weld puddle paunenge uchitungidza vertically kumusoro kana pamusoro.Kuipa kwekukurumidza kutonhora kweslag ndiko kuoma pamberi pechidziva che weld pazasi payo.Kana magasi achiri kusunungurwa, anowanzova akavharirwa muhonye uye anoonekwa pave pave pasati pave nemapores. ine dhayamita diki waya uye kuyedza kuisa hombe weld mune imwe chete pass, senge mune yako application.
Weld cracking pakutanga uye kumira kweweld kunogona kukonzerwa nezvikonzero zvakawanda.Sezvo iwe uri kuisa bheji yakakura ine dhayamita diki waya, iwe unogona kunge uchisangana nekusakwana fusion (LOF) pamudzi we weld.Weld cracking chinhu chinowanzoitika nekuda kwekunyanya kusara weld stress uye LOF pamudzi.
Nokuda kwehukuru hwetambo iyi, unofanira kushandisa maviri kana matatu mapeji kuti upedze 3/8 ye inch. Fillet welds, hapana.Unogona kuwana nekukurumidza kugadzira matatu asina kukanganisa-asina welds pane kuita imwechete yakakanganiswa weld uye wozofanira kugadzirisa.
Zvisinei, imwe nyaya inogona kuita basa guru mukuputsika kwe weld ndiyo chiyero chisina kururama cheferrite mu weld, iyo inowanzova chikonzero chikuru chekuputika.309L wire yakagadziridzwa yekugadzira simbi isina tsvina kune carbon steel pane carbon steel ku carbon steel.Iyo chaiyo weld chemistry yechigadzirwa ichi inofungawo imwe nheyo yesimbi dilution yezvose zviri zviviri simbi. zviyero zvinogamuchirwa zveferrite.Kushandisa simbi yekuzadza inenge 50% ferrite, yakadai se312 kana 2209, ichabvisa mukana wekuputika nekuda kwekuderera kwe ferrite content.
Nzira yakanakisa yekupa yakanakisa kusakara ndeye weld the joint with standard carbon or stainless steel electrode and wobva wawedzera layer yesurfacing electrode.Zvisinei, unotaura kuti uri pasi pezvipingamupinyi zvenguva dzakasimba uye kuti chero ma multi-pass welding situation is out of question.
Edza kutendeutsa kune tambo yakakura yedhayamita, yakadai se 1/16 inch kana yakakura.Kushandisa gas-shielded flux-cored wire ndiyo yakanaka nokuti inopa kuchenesa weld zviri nani uye kuchengetedzwa kwemhepo zviri nani pane tambo dzisina-flux-cored.Zvisinei, panzvimbo yewaya-yese-nzvimbo, chete flat uye yakatwasuka nzvimbo waya inogona kuderedza 39L simbi inogonawo kuderedza porosity ye392Uyo inogona kuderedza porosity. 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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