Los ntawm kev soj ntsuam, nws tsis yooj yim los nrhiav qhov ntawd thaum twg los tautuab-walled steel kav, thermally nthuav cov kav dej, thiab lwm yam yog tsim, sawb hlau yog siv los ua cov khoom siv raw, thiab cov kav dej tau txais los ntawm cov kav dej tuab tuab ntawm cov khoom siv vuam ntau zaus hu ua cov kav hlau tuab. Ntawm lawv, raws li kev siv sib txawv thiab cov txheej txheem tsim khoom rov qab sib txawv, lawv tuaj yeem muab faib ua Scaffolding raj, raj dej, hlau casings, bracket tubes, guardrail tubes, thiab lwm yam). Txheem rau tuab-walled welded kav GB / T3091-2008. Cov kav dej uas tsis tshua muaj siab welded yog ib hom tuab-walled welded kav. Lawv feem ntau yog siv rau kev thauj mus los ntawm dej thiab roj. Tom qab vuam, muaj ib qho kev ntsuam xyuas hydraulic ntau dua li cov kav dej zoo tib yam. Yog li ntawd, cov kav dej uas tsis tshua muaj siab muaj cov phab ntsa tuab dua li cov kav dej welded zoo tib yam. Welded yeeb nkab quotes feem ntau yog siab dua me ntsis.

Cov txheej txheem tshuaj xyuas rau cov kav dej tuab-walled feem ntau suav nrog cov ntsiab lus hauv qab no:
1. Thick-walled steel kav yuav tsum raug xa mus rau kev tshuaj xyuas hauv cov khoom siv, thiab cov kev cai batching yuav tsum ua raws li cov kev cai ntawm cov khoom siv sib xws.
2. Cov khoom kuaj xyuas, kuaj kom muaj nuj nqis, qhov chaw kuaj, thiab cov txheej txheem ntawm cov kav hlau tuab tuab yuav tsum yog los ntawm cov kev cai ntawm cov khoom sib xws. Nrog kev pom zoo los ntawm tus neeg yuav khoom, cov kav dej kub-dov seamless tuab-walled steel kav tuaj yeem ua qauv hauv cov khoom raws li tus lej dov.
3. Yog tias qhov kev ntsuam xyuas ntawm cov kav hlau tuab tuab tsis ua raws li cov qauv ntawm cov khoom, cov khoom tsis tsim nyog yuav tsum tau muab cais tawm, thiab ob npaug ntawm cov qauv yuav tsum tau xaiv los ntawm tib batch ntawm tuab-walled steel kav. los ua cov khoom tsis tsim nyog. rov tshuaj xyuas. Yog tias qhov kev kuaj xyuas rov ua tsis tiav, cov kav dej tuab-walled steel yuav tsum tsis raug xa mus.
4. Rau cov kav hlau tuab uas tsis tsim nyog rov kuaj xyuas, tus neeg muag khoom tuaj yeem xa lawv mus kuaj ib los ntawm ib qho; los yog lawv tuaj yeem tau txais kev kho cua sov dua thiab xa ib pawg tshiab rau kev tshuaj xyuas.
5. Yog tias tsis muaj cov kev cai tshwj xeeb hauv cov khoom tshwj xeeb, cov tshuaj muaj pes tsawg leeg ntawm cov kav dej tuab-walled steel yuav tsum raug tshuaj xyuas raws li cov khoom sib xyaw.
6. Kev tshuaj xyuas thiab tshuaj xyuas cov kav dej tuab-walled steel yuav tsum tau ua los ntawm tus neeg muag khoom lub chaw saib xyuas kev ua haujlwm.
7. Tus neeg muag khoom muaj cov cai los xyuas kom meej tias cov xaum tuab-walled steel kav ua raws li cov khoom lag luam tshwj xeeb. Tus neeg yuav khoom muaj txoj cai los tshuaj xyuas thiab tshuaj xyuas raws li cov khoom lag luam sib xws.

Tsis tas li ntawd, muaj qee yam uas peb yuav tsum paub txog kev tswj cov kav dej tuab-walled steel kav:
1. Welding kub tswj ntawm tuab-walled steel kav: Lub vuam kub yog cuam tshuam los ntawm high-frequency eddy tam sim no thermal zog. Raws li cov qauv, lub high-frequency eddy tam sim no thermal zog yog cuam tshuam los ntawm tam sim no zaus. Lub eddy tam sim no thermal zog yog proportional rau lub square ntawm qhov kev txhawb zog tam sim no zaus; Tam sim no stimulation zaus yog cuam tshuam los ntawm stimulation voltage, tam sim no, capacitance, thiab inductance. Cov mis rau kev txhawb zog ntau zaus yog:
f=1/[2π(CL)1/2]…(1) Nyob rau hauv tus qauv: f-txhawb zaus (Hz); C-capacitance nyob rau hauv txhawb lub voj (F), capacitance = hwj chim / voltage; L-kev txhawb nqa lub voj Inductance, inductance = sib nqus flux / tam sim no, nws tuaj yeem pom los ntawm cov qauv saum toj no uas qhov kev tawm dag zog yog inversely proportional rau lub hauv paus square ntawm capacitance thiab inductance nyob rau hauv lub excitation Circuit Court, los yog ncaj qha proportional rau lub square cag ntawm voltage thiab tam sim no. Ntev npaum li qhov capacitance, inductance, lossis voltage thiab tam sim no nyob rau hauv Circuit Court raug hloov, qhov loj ntawm excitation zaus tuaj yeem hloov tau kom ua tiav lub hom phiaj ntawm kev tswj cov vuam kub. Rau cov pa roj carbon tsawg, qhov vuam kub yog tswj ntawm 1250 ~ 1460 ℃, uas tuaj yeem ua tau raws li qhov xav tau ntawm vuam nkag ntawm cov yeeb nkab phab ntsa thickness ntawm 3 ~ 5 hli. Tsis tas li ntawd, qhov vuam kub kuj tuaj yeem ua tiav los ntawm kev kho qhov vuam ceev. Thaum cov khoom siv hluav taws xob tsis txaus, qhov cua sov ntawm qhov vuam tsis ncav cuag qhov kub ntawm qhov vuam, thiab cov qauv hlau tseem ruaj khov, ua rau tsis tiav fusion lossis tsis tiav kev nkag; Thaum lub tshav kub input tsis txaus, lub rhuab ntug ntawm lub weld tshaj qhov vuam kub, uas ua rau over-burning los yog molten droplets ua rau lub weld tsim ib tug molten qhov.

2. Kev tswj qhov sib txawv ntawm qhov sib txawv ntawm cov kav hlau uas tuab-walled: Xa cov hlua hlau mus rau hauv cov yeeb nkab welded, thiab yob nws los ntawm ntau lub chais. Lub sawb hlau yog maj mam dov los ua ib lub raj puag ncig nrog qhib qhov khoob. Kho lub siab ntawm kneading roller. Tus nqi yuav tsum tau hloov kho kom qhov sib txawv ntawm qhov sib txawv ntawm 1 ~ 3 hli thiab ob qhov kawg ntawm qhov vuam yog flush. Yog tias qhov sib txawv loj dhau lawm, cov nyhuv ze ze yuav raug txo, cov cua sov tam sim no yuav tsis txaus, thiab kev sib txuas ntawm cov khoom siv hluav taws xob ntawm cov weld yuav tsis zoo, ua rau tsis muaj fusion lossis tawg. Yog tias qhov sib txawv me me dhau lawm, cov nyhuv nyob ze yuav nce ntxiv, thiab cov vuam kub yuav loj dhau, ua rau cov vuam kub kub; los yog lub weld yuav tsim ib lub qhov tob tom qab kneaded thiab dov, cuam tshuam rau saum npoo ntawm weld.