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 netsvina mu weld, kurasikirwa kana kuwanda kwekudzivirira gasi, kana kunyanya kunyorova kunyura kwe flux-cored wire.Iwe unotaura kuti iyi ibasa rekugadzirisa pamvura yakanyorova mukati memuomesi, saka kana welds asina kucheneswa zvakakwana, 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 yakagadzirwa nokuda kwekuisa simbi isina tsvina kune carbon steel pane carbon steel to carbon steel.Iyo chaiyo weld chemistry yechigadzirwa ichi inofungawo imwe yevabereki dilution yesimbi yevabereki 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, wakataura kuti wanga uri pasi pezvipingamupinyi zvenguva dzakasimba uye kuti chero ma multi-pass welding mamiriro aive kunze kwemubvunzo.
Edza kutendeudzira kune yakakura dhayamita waya, senge 1/16 inch kana yakakura.Kushandisa gasi-yakadzivirirwa flux-cored waya kwakanakira nekuti inopa zvirinani weld kucheneswa uye zvirinani kudzivirira kuyerera kwemhepo pane isina-flux-cored waya.Zvisinei, pachinzvimbo chese-chinzvimbo waya, chete flat uye yakatwasuka chinzvimbo waya inogona kuderedza 3 porosity kana simbi 3 kuzadza 31L kana simbi inoderedza porosity. 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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