Koj txuas cov yeeb nkab steel ua ke li cas?
Kev sib txuas cov kav hlau ua ke yog ib txoj haujlwm tseem ceeb hauv ntau qhov kev lag luam, suav nrog kev tsim kho, kav dej, thiab roj thiab roj. Kev sib koom ua ke ntawm cov kav hlau steel ua kom muaj kev ncaj ncees thiab kev ua haujlwm ntawm cov kua thiab roj tsheb thauj mus los. Ntau txoj hauv kev tuaj yeem siv los txuas cov kav hlau, nyob ntawm daim ntawv thov thiab cov kev cai tshwj xeeb. Hauv tsab xov xwm no, peb yuav tshawb txog cov txheej txheem ntau tshaj plaws uas siv los txuas cov kav hlau, suav nrog vuam, threading, thiab coupling.
Vuam:
Ib txoj hauv kev zoo tshaj plaws rau kev sib txuas cov kav hlau yog vuam. Vuam yuav koom nrog ob lossis ntau daim ntawm cov hlau los ntawm melting thiab fusing lawv ua ke. Nws tsim kev sib txuas mus tas li uas muaj zog thiab txhim khu kev qha. Muaj ntau hom kev siv vuam siv rau kev sib txuas steel yeeb nkab, suav nrog:
1. *Shielded Hlau Arc Vuam (SMAW):* Kuj hu ua stick welding, SMAW yog dav siv nyob rau hauv kev tsim kho thiab pipeline tej yaam num. Nws suav nrog kev siv hluav taws xob arc los tsim cov vuam siv lub tshuab hluav taws xob uas siv hluav taws xob thiab lub zog hluav taws xob. Cov electrode melts thaum lub sij hawm vuam, tsim ib lub pas hlau molten uas solidifies tsim ib qho kev sib koom ua ke.
2. * Gas Hlau Arc Vuam (GMAW):* Feem ntau hu ua MIG (Metal Inert Gas) vuam, GMAW siv cov hlau electrode uas txuas ntxiv mus rau hauv qhov chaw vuam. Cov hlau electrode, nrog rau cov roj inert shielding, tsim cov vuam. Nws muaj vuam ceev ceev thiab tsim nyog rau ob qho tib si sab hauv tsev thiab sab nraum zoov daim ntaub ntawv.
3. * Gas Tungsten Arc Vuam (GTAW):* GTAW, tseem hu ua TIG (Tungsten Inert Gas) vuam, feem ntau yog siv rau cov welds zoo hauv cov ntawv thov tseem ceeb. Nws siv cov tungsten electrode uas tsis yog siv tau thiab cov khoom siv tsis zoo los tsim cov vuam. GTAW ua kom huv, meej, thiab ua kom zoo nkauj welds.
4. * Flux-Cored Arc Vuam (FCAW):* FCAW siv ib lub tubular xaim uas muaj cov flux los tiv thaiv lub pas dej molten weld los ntawm atmospheric paug. Nws yog cov txheej txheem vuam ntau yam tsim nyog rau sab nraum zoov thiab cua. FCAW feem ntau yog siv rau hauv cov khoom hnyav thiab cov qauv vuam.
Xov xov:
Lwm txoj kev nrov rau kev sib txuas cov kav hlau yog threading. Threading cuam tshuam nrog kev tsim cov xov sab nraud lossis sab hauv ntawm cov yeeb nkab kawg, tso cai rau lawv tuaj yeem sib dhos ua ke. Txoj kev no feem ntau yog siv rau hauv cov kav dej sib txuas thiab tsim nyog rau cov kav dej me me. Muaj ob hom kev threading:
1. * Sab Nraud Threading:* Nyob rau sab nraud threading, cov yeeb nkab tuag yog siv los txiav cov xov rau hauv cov yeeb nkab sab nraud. Cov yeeb nkab tuag yog tig ib ncig ntawm cov yeeb nkab, tsim kom muaj qhov xav tau xov profile. Thaum threaded, cov kav dej tuaj yeem ntsia tau ua ke siv cov couplings lossis fittings.
2. * Internal Threading: * Internal threading yuav tsim cov xov nyob rau sab hauv ntawm cov yeeb nkab siv tus kais. Cov kais dej yog tig rau hauv cov yeeb nkab kom txiav cov xov. Internal threading feem ntau yog siv thaum txuas cov kav dej rau li qub lossis fittings.
Coupling:
Coupling yog ib txoj hauv kev sib txuas cov kav hlau uas siv cov khoom siv kho tshuab hu ua couplings. Couplings yog cov khoom siv tubular nrog cov xov sab hauv ntawm ob qho kawg, tso cai rau cov kav dej sib txuas ua ke. Muaj ntau hom couplings muaj rau kev siv sib txawv:
1. * Compression Couplings: * Compression couplings yog tsim rau kev sib txuas cov kav dej uas nqa cov pa roj los yog cov kua dej hauv qab qis. Cov couplings no muaj ob ntu uas nruj ib ncig ntawm cov yeeb nkab kawg uas siv cov txiv ntoo compression. Lawv tsim ib qho kev sib txuas-resistant yam tsis tas yuav tsum tau vuam lossis threading.
2. * Grooved Couplings: * Grooved couplings siv lub gasket thiab bolts los txuas cov kav dej ua ke. Cov grooves ntawm cov yeeb nkab kawg yog txuam nrog cov grooves ntawm lub coupling, tsim kom muaj kev ruaj ntseg sib koom ua ke. Grooved couplings feem ntau yog siv hauv kev tiv thaiv hluav taws thiab cov kav dej loj.
3. * Flanged Couplings: * Flanged couplings koom nrog kev sib txuas cov kav dej siv flanges. Flanges yog tiaj, ncig discs nrog qhov rau bolts. Cov kav dej yog sib npaug thiab bolted ua ke siv cov gaskets, tsim kom muaj kev sib txuas. Flanged couplings feem ntau yog siv rau hauv kev lag luam daim ntawv thov uas yuav tsum tau nquag disassembly.
Xaus:
Kev sib txuas cov yeeb nkab steel ua ke yuav tsum tau ua tib zoo xav txog daim ntawv thov thiab cov cai tshwj xeeb. Vuam muaj kev sib txuas ruaj khov thiab ruaj khov, thaum threading tso cai rau kev sib dhos yooj yim thiab disassembly. Couplings muab kev yooj yim thiab yooj yim ntawm installation. Txawm hais tias koj xaiv vuam, threading, los yog coupling, nws yog ib qho tseem ceeb heev kom ua raws li cov qauv kev lag luam thiab cov kev coj ua zoo tshaj plaws los xyuas kom meej qhov kev ncaj ncees thiab ntev ntawm kev sib txuas. Kev sib txuas zoo ntawm cov kav hlau steel yog qhov tseem ceeb rau kev thauj mus los ntawm cov kua thiab roj hauv ntau yam kev lag luam.