Seamless stainless hlau kav yog tsim los ntawm ib tug series ntawm cov kauj ruam uas muaj cua sov, tho, dov, thiab tiav los tsim cov kav dej uas tsis muaj welded seams. Ntawm no yog cov lus piav qhia ntxaws txog cov txheej txheem tsim khoom, ua raws li cov txheej txheem kev sim thiab cov qauv uas ua kom lawv cov khoom zoo.
Cov txheej txheem ntau lawm ntawm Seamless Stainless hlau kav
Kev npaj raw khoom
Kev npaj Billet: Stainless hlau billets (cylindrical khoom tuav) raug xaiv thiab txiav mus rau qhov ntev ntev. Cov billets raug tshuaj xyuas qhov tsis xws luag thiab npaj rau cua sov.
Cua sov
Cua sov lub Billet: Lub billet yog rhuab nyob rau hauv lub qhov cub hluav taws xob los yog lub qhov cub induction rau qhov kub thiab txias feem ntau nyob ib ncig ntawm 1200 degree - 1300 degree (2192 degree F - 2372} degree F) kom muag cov hlau thiab ua kom nws ua haujlwm tau zoo dua.
Piercing
Txoj Kev Piercing: Lub tshuab hluav taws xob uas muaj cua sov tau hloov mus rau lub tshuab tho qhov uas nws tau chob siv lub tshuab rotary piercer lossis Mannesmann piercing mill. Lub billet yog tig thiab thawb hla lub tho mandrel los yog ntsaws los tsim lub plhaub hollow. Qhov no ua rau lub raj ntxhib nrog qhov chaw pib hollow.
Rolling
Elongation los yog Pilger Mill Rolling: Lub plhaub hollow yog dov rau hauv ib lub elongator los yog pilger zeb kom txo txoj kab uas hla thiab phab ntsa thickness. Cov yeeb nkab hla dhau ntawm cov dov sawv ntsug nrog tapered rollers uas maj mam txo nws cov thickness thiab elongate nws ntev.
Mandrel Mill Txheej Txheem: Ib tug mandrel (ib tug ntev cylindrical pas nrig) yog muab tso rau hauv lub hollow yeeb nkab thaum nws dhau los ntawm dov sawv. Qhov no yuav pab kom ua tiav qhov xav tau sab hauv thiab sab nraud qhov ntev thaum tuav lub ntsej muag du.
Sizing thiab Stretch Txo
Sizing Mill: Cov yeeb nkab mus los ntawm lub tshuab sizing kom ua tiav cov kab uas hla thiab phab ntsa tuab. Kev ua haujlwm sizing kom paub meej qhov tseeb.
Stretch Txo Mill: Qee zaum, cov yeeb nkab tau raug txo qis, qhov uas nws tau txo qis ntxiv rau hauv txoj kab uas hla thiab nplua-tuned rau tuab.
Kev kho cua sov
Annealing: Cov yeeb nkab yog raug rau kev kho cua sov los yog annealing los txo cov kev ntxhov siab sab hauv, txhim kho ductility, thiab txhim kho cov khoom siv kho tshuab. Cov txheej txheem annealing yuav tsum ua kom sov cov yeeb nkab rau qhov kub thiab txias sai sai (quenched) lossis maj mam, nyob ntawm seb cov khoom xav tau.
Straightening thiab txiav
Ncaj ncaj: Cov yeeb nkab tau dhau los ntawm lub tshuab ncaj qha los kho qhov khoov lossis qhov sib txawv ntawm qhov xav tau.
Txiav: Cov yeeb nkab yog txiav mus rau qhov ntev uas yuav tsum tau siv cov tshuab txiav, xws li cov saws lossis cov nplaim taws.
Nto Finishing
Descaling thiab Pickling: Cov yeeb nkab saum npoo yog ntxuav siv cov kua qaub (pickling) lossis abrasive blasting kom tshem tawm cov nplai, oxides, thiab lwm yam impurities.
Polishing: Cov yeeb nkab yog polished kom ua tiav qhov yuav tsum tau ua tiav, tshwj xeeb tshaj yog rau cov ntawv thov uas qhov kev ua tiav yog qhov tseem ceeb.
Kev tshuaj xyuas thiab kuaj
Visual thiab Dimensional Inspection: Cov kav dej tau pom qhov pom ntawm qhov tsis xws luag, thiab lawv qhov ntev raug kuaj xyuas kom ntseeg tau tias lawv ua tau raws li qhov xav tau tshwj xeeb.
Kev sim cov txheej txheem thiab cov qauv rau Seamless Stainless hlau kav
Seamless stainless hlau kav yog raug rau ntau yam kev ntsuam xyuas los xyuas lawv cov kev ua tau zoo thiab ua raws li cov qauv.
Cov Txheej Txheem Kev Xeem:
Kev Xeem Tsis Muaj Kev Ua Phem (NDT):
Kev kuaj ultrasonic (UT): Siv cov suab nrov nthwv dej kom pom cov teeb meem sab hauv lossis kev tsis sib xws.
Eddy Current Testing (ECT): Txheeb xyuas qhov chaw thiab qhov ze ntawm qhov chaw uas siv electromagnetic induction.
Magnetic Particle Inspection (MPI): Pom qhov chaw thiab me ntsis subsurface discontinuities siv magnetic teb thiab hlau hais (tsuas yog siv rau ferromagnetic cov ntaub ntawv).
Dye Penetrant Inspection (DPI): Siv cov kua dej nkag mus rau qhov pom qhov tsis xws luag uas yuav tsis pom ntawm qhov muag liab qab.
Kev kuaj kev puas tsuaj:
Kev Ntsuas Tensile: Ntsuas cov yeeb nkab lub zog los ntawm rub nws kom txog thaum nws tawg.
Kev kuaj Hardness: Txiav txim siab cov khoom tsis kam rau indentation.
Flattening Test: Ntsuas cov yeeb nkab muaj peev xwm tiv taus flattening yam tsis muaj kev tawg.
Khoov Test: Ntsuam xyuas cov ductility thiab muaj peev xwm ntawm cov yeeb nkab kom tiv taus kev khoov yam tsis muaj kev tawg.
Kev sim cuam tshuam: Ntsuam xyuas cov yeeb nkab qhov toughness lossis muaj peev xwm nqus tau lub zog thaum tawg.
Kev Ntsuas Hydrostatic:
Cov yeeb nkab yog ntim nrog dej los yog lwm cov kua thiab nias kom kuaj xyuas cov dej xau, qhov tsis xws luag, lossis kev ua haujlwm tsis muaj zog. Nws txheeb xyuas cov yeeb nkab muaj peev xwm tiv taus nws qhov siab tshaj plaws ntsuas.
Cov Qauv rau Seamless Stainless Hlau Yeeb Nkab:
Ob peb tus qauv thoob ntiaj teb qhia txog kev tsim khoom, kev sim, thiab kev xav tau zoo rau cov kav dej seamless stainless hlau:
ASTM Cov Qauv:
ASTM A 312 Cov Lus Qhia: Standard Specification rau Seamless, Welded, thiab hnyav hnyav ua hauj lwm Austenitic Stainless hlau kav.
ASTM A 213: Txuj Specification rau Seamless Ferritic thiab Austenitic Alloy Steel Boiler, Superheater, thiab Kub-Exchanger Tubes.
ASTM A 269 Cov khoom siv: Txuj Specification rau Seamless thiab Welded Austenitic Stainless Steel Tubing rau General Service.
ASTM A790 Cov Lus Qhia Tshwj Xeeb: Txuj Specification rau Seamless thiab Welded Ferritic / Austenitic Stainless Hlau Yeeb Nkab.
ASME Cov Qauv:
ASME SA312, SA213, SA269, SA790: Cov no yog cov kev qhia tshwj xeeb sib npaug rau cov qauv ASTM tab sis luam tawm los ntawm American Society of Mechanical Engineers rau siv hauv kev siv cov kav dej siab.
EN (European Norm) Cov Qauv:
EN 10216-5: Seamless steel tubes rau lub hom phiaj siab - Cov txheej txheem kev xa khoom - Ntu 5: Stainless hlau raj.
EN 10297-2: Seamless ncig steel raj rau txhua yam thiab dav siv engineering lub hom phiaj - Cov xwm txheej kev xa khoom - Ntu 2: Stainless hlau.
ISO Standards:
TS EN ISO 1127: Stainless hlau raj - Qhov ntev, kam rau ua, thiab cov pa hnyav ib chav tsev ntev.
ISO 2037 Cov Ntawv Pov Thawj: Stainless hlau raj rau kev lag luam zaub mov.
Cov qauv no muab cov lus qhia rau cov khoom siv, qhov ntev, qhov siab, qhov ua tiav, cov khoom siv kho tshuab, thiab cov txheej txheem kuaj xyuas kom ntseeg tau tias cov kav dej seamless stainless hlau ua tau raws li qhov yuav tsum tau ua thiab cov qauv kev nyab xeeb rau lawv cov kev xav tau.