9.25 * 1.24mm ASTM A216 316/316L Intsimbi engatyiwayo ebhijelwe ityhubhu evela eTshayina

Xa welding 300 Series steel stainless, iikontraka unako ukuphelisa backflushing kwi amalungu iingcambu evulekileyo imibhobho edibeneyo ngelixa ukugcina umgangatho weld eliphezulu.
Ukuwelda kweetyhubhu zensimbi engenasici kunye nemibhobho kaninzi kufuna ukubuyisela umva nge-argon usebenzisa iinkqubo zemveli ezifana negesi ekhuselekileyo ye-tungsten arc welding (GTAW) kunye ne-shielded metal arc welding (SMAW).Kodwa iindleko zegesi kunye nexesha elithathayo ukugqiba inkqubo yokucoca inokubaluleka, ngakumbi njengoko ububanzi bombhobho kunye nobude banda.

Xa ukuwelda 300 Series steel stainless, iikontraka unako ukutshintshela inguqu kwisekethe emfutshane yentsimbi arc welding (GMAW) inkqubo endaweni GTAW zemveli okanye SMAW.Inkqubo ye-GMAW ephuculweyo ye-short-circuit ibonelela ngokusebenza okongeziweyo, ukusebenza kakuhle kunye nokusebenziseka ngokulula ukunceda ukwandisa inzuzo.
Ngenxa yokunganyangeki kwe-corrosion kunye namandla, ii-alloys zensimbi ezingenasici zisetyenziswa kwizicelo ezininzi zemibhobho, kubandakanya ioyile negesi, i-petrochemical, kunye namashishini e-biofuel.Ngelixa i-GTAW ibisoloko isetyenziswa kwizixhobo ezininzi zentsimbi engenasici, inazo ezinye izinto ezingeloncedo ezinokuthi ziqwalaselwe ngesekethe emfutshane elungisiweyo ye-GMAW.
Okokuqala, ngenxa yokunqongophala okuqhubekayo kwabachwephesha abanezakhono, ukufumana iingcali ze-GTAW ngumngeni oqhubekayo.Okwesibini, i-GTAW ayisiyiyo inkqubo yokuwelda ngokukhawuleza, eyenza kube nzima kwiinkampani ezifuna ukwandisa imveliso ukuhlangabezana nemfuno yabathengi.Okwesithathu, ukubuyisela umva ixesha elide kunye neendleko zemibhobho yentsimbi engatyiwa kunye nemibhobho iyafuneka.
I-Purge kukuqaliswa kwegesi ngexesha le-welding ukususa ukungcola kunye nokubonelela ngenkxaso.I-back side purge ikhusela umva we-weld ekubunjweni kwee-oxides ezinzima phambi kwe-oxygen.
Ukuba i-backside ayikhuselekanga ngexesha le-root canal welding, oku kunokubangela ukuqhekeka kwezinto ezisisiseko.Esi siphene saziwa ngokuba yi-shugaring, ebizwa ngokuba ngumphezulu ongaphakathi kwi-weld efana kakhulu neswekile.Ukuthintela i-shugaring, i-welder ifaka i-hose yegesi kwelinye icala lombhobho, emva koko ifake iziphelo zombhobho ngeeplagi zokucoca.Baphinde benza i-vent kwelinye icala lombhobho.Kwakhona ngokuqhelekileyo zifakwe kwi-tape ejikeleze i-seams.Emva kokucoca umbhobho, basusa isiqwenga se-tape ejikeleze i-joint kwaye baqhubela phambili kwi-weld, baphinda inkqubo yokuqhawula kunye ne-welding de i-weld weld igqitywe.
I-Blowback inokubiza inani elikhulu lexesha kunye nemali, kwezinye iimeko zongeza amawaka eedola kwiprojekthi.Ukutshintshela kumjikelezo omfutshane wenkqubo ye-GMAW ivumele inkampani ukuba iqhube iingcambu ezingenazo i-backflush-free kwizicelo ezininzi zentsimbi.Welding 300 series stainless steels ngumgqatswa olungileyo, lo gama ukuwelda high ubunyulu duplex steels stainless okwangoku kufuna GTAW iingcambu yokupasa.
Ukugcina igalelo lobushushu liphantsi kangangoko kunokwenzeka kunceda ukugcina ukuxhathisa kwe-corrosion ye-workpiece.Enye indlela yokunciphisa igalelo lobushushu kukunciphisa inani lokupasa kwe-welding.Inkqubo eguquliweyo ye-GMAW yesekethe emfutshane efana ne-metal deposition elawulwayo (RMD®) isebenzisa ukuhanjiswa kwetsimbi okulawulwa ngokuchanekileyo ukuqinisekisa ukuthotywa kwethontsi efanayo.Oku kwenza kube lula ukuba i-welder ilawule i-weld pool, ngaloo ndlela ilawula igalelo lobushushu kunye nesantya se-welding.Igalelo elincinci lobushushu livumela ibhafu etyhidiweyo ukuba ibe ngumkhenkce ngokukhawuleza.
Ngenxa yokuhanjiswa kwesinyithi okulawulwayo kunye nokukhenkceza ngokukhawuleza kwechibi le-weld, i-weld pool iya iyancipha kwaye igesi ekhuselayo iphuma kwitotshi ye-GMAW ngokutyibilikayo.Oku kuvumela i-gas ekhuselayo ukuba inyanzeliswe kwingcambu evulekileyo, ukunyanzelisa umoya kunye nokuthintela i-saccharification okanye i-oxidation kwi-underside ye-weld.Ngenxa yokuba i-puddle iba ngumkhenkce ngokukhawuleza, kuthatha ixesha elincinane kakhulu ukuba igesi iwugqume.
Uvavanyo lubonise ukuba inkqubo ye-GMAW yesiphaluka esifutshane elungisiweyo ihlangabezana nemigangatho yomgangatho we-weld ngelixa igcina ukuxhathisa ukubola kwentsimbi engenasici njengaxa usebenzisa i-GTAW ye-root pass welding.
Ukuwelda imijelo yeengcambu ezivulekileyo kusetyenziswa inkqubo ye-GMAW yesekethe emfutshane elungisiweyo inokuzisa nezinye izibonelelo ngokubhekiselele kwimveliso, ukusebenza kakuhle, kunye noqeqesho lwe-welder.
Utshintsho kwiinkqubo ze-welding zifuna ukuba iinkampani zilungele iinkqubo zabo, kodwa olu tshintsho lunokuhlawula ngokwexesha kunye nokugcinwa kweendleko - zombini imveliso entsha kunye nokuhlaziywa.
Ukuwelda imijelo yeengcambu ezivulekileyo kusetyenziswa inkqubo ye-GMAW yesekethe emfutshane elungisiweyo inokuzisa nezinye izibonelelo ngokubhekiselele kwimveliso, ukusebenza kakuhle, kunye noqeqesho lwe-welder.Ezi ziquka:
Ukuphelisa ukuba nokwenzeka kwemijelo eshushu ngenxa yokuba nokwenzeka kokubekwa kwentsimbi eninzi ukunyusa ubukhulu bomsele weengcambu.
Ukuchasana okugqwesileyo kwiindawo eziphakamileyo neziphantsi phakathi kwamacandelo emibhobho.Le nkqubo inokuvala ngokulula izikhewu ukuya kuthi ga kwi-intshi ezi-3⁄16 ngenxa yokuhanjiswa kwentsimbi.
Ubude be-arc obuqhubekayo bugcinwa kungakhathaliseki ukuba i-electrode extension extension, ihlawulela abaqhubi abazama ukugcina ubude bokwandiswa rhoqo.I-pool ye-weld elawulwa ngakumbi kunye nenguqu yensimbi engaguqukiyo inciphisa ixesha loqeqesho lwabashicileli abatsha.
Nciphisa ixesha lokuphumla kutshintsho lwenkqubo.Ucingo olufanayo kunye negesi yokukhusela ingasetyenziselwa iingcambu, ukuzalisa kunye nokudlula kwekhaka.Inkqubo ye-GMAW ye-pulsed ingasetyenziselwa ukuba iziteshi zizaliswe kwaye zitywinwe ngegesi yokukhusela equkethe ubuncinane i-80% ye-argon.
Kwimisebenzi efuna ukuphelisa ukubuyisela umva kwizicelo zensimbi engenasici, kubalulekile ukulandela iingcebiso ezintlanu eziphambili zokuguqula ngempumelelo inkqubo ye-GMAW yesekethe emfutshane.
Coca imibhobho ngaphakathi nangaphandle ukuze ususe nayiphi na into engcolileyo.Coca ubuncinane i-intshi eyi-1 ukusuka kumda we-fitting kunye ne-brush yocingo eyenzelwe insimbi engenasici.
Sebenzisa i-silicon ephezulu yentsimbi yokuzalisa intsimbi enje nge-316LSi okanye i-308LSi.Umxholo ophezulu we-silicon unceda ukumanzisa ibhafu yokunyibilika kwaye usebenze njenge-deoxidizer.
Ukufumana iziphumo ezilungileyo, sebenzisa umxube wegesi wekhaka owenziwe ngokukodwa kwinkqubo, njenge-90% ye-helium, i-7.5% ye-argon, kunye ne-2.5% ye-carbon dioxide.Enye inketho yi-98% ye-argon kunye ne-2% ye-carbon dioxide.Umthengisi wegesi ye-welding unokuba nezinye iingcebiso.
Ukufumana iziphumo ezingcono, sebenzisa incam yekhowuni kunye nombhobho wengcambu yerhasi ekujoliswe kuyo.Umbhobho we-Conical one-gas diffuser eyakhelwe-ngaphakathi ibonelela ngokugqwesileyo.
Qaphela ukuba ukusebenzisa inkqubo emfutshane elungisiweyo ye-GMAW (akukho rhasi yogcino) kukhokelela kwixabiso elincinci lenkunkuma ngasemva kwe-weld.Idla ngokugqabhuka njengoko i-weld iphola kwaye idibana nemigangatho yomgangatho weshishini leoli, izityalo zamandla kunye neekhemikhali zepetroli.
UJim Byrne ungumphathi weentengiso kunye nezicelo zeMiller Electric Mfg LLC, 1635 W. Spencer St., Appleton, WI 54912, 920-734-9821, www.millerwelds.com.
I-Tube & Pipe Journal yasungulwa ngo-1990 njengemagazini yokuqala enikezelwe kushishino lwemibhobho yesinyithi.Ukuza kuthi ga namhlanje, isekuphela kwempapasho yoshishino kuMntla Melika kwaye iye yaba ngowona mthombo uthembekileyo wolwazi lwabasebenzi betyhubhu.
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UChristian Sosa waseLas Vegas esekwe kwiSosa Metalworks ujoyina iFabricator podcast ukuthetha ngohambo lwakhe olusuka…