1. Kev Taw Qhia Txogcov yeeb nkab hlau tsis muaj seamless
Cov yeeb nkab hlau tsis muaj qhov (seamless steel pipe) yog cov yeeb nkab hlau uas muaj qhov seem hollow thiab tsis muaj cov seams nyob ib puag ncig nws. Nws muaj lub zog siab, tiv taus corrosion thiab thermal conductivity zoo. Vim nws qhov kev ua tau zoo heev, cov yeeb nkab hlau tsis muaj qhov (seamless steel pipe) tau siv dav hauv ntau qhov chaw xws liroj av, kev lag luam tshuaj lom neeg, lub zog hluav taws xob, thiabkev tsim kho.
2. Cov txheej txheem tsim cov yeeb nkab hlau tsis muaj seamless
Cov txheej txheem tsim cov yeeb nkab hlau seamless feem ntau suav nrog cov kauj ruam hauv qab no:
a. Npaj cov khoom siv raw: Xaiv cov hlau billets tsim nyog, uas xav tau qhov chaw du, tsis muaj npuas, tsis muaj kab nrib pleb, thiab tsis muaj qhov tsis zoo.
b. Kev Ua Kub: Ua kom cov hlau billet kub heev kom nws ua yas thiab yooj yim rau kev tsim.
c. Kev tho: Cov hlau billet uas tau cua sov yog tho rau hauv ib lub raj dawb paug los ntawm lub tshuab tho, uas yog, ib lub yeeb nkab hlau uas tau tsim ua ntej.
d. Dov yeeb nkab: Lub raj khoob raug dov ntau zaus kom txo nws txoj kab uas hla, ua kom nws cov phab ntsa tuab dua, thiab tshem tawm kev ntxhov siab sab hauv.
e. Kev Ntsuas Qhov Loj: Thaum kawg cov yeeb nkab hlau raug tsim los ntawm lub tshuab ntsuas qhov loj kom lub cheeb thiab phab ntsa tuab ntawm cov yeeb nkab hlau ua tau raws li tus qauv.
f. Txias: Cov yeeb nkab hlau uas zoo li no raug txias kom nws qhov nyuaj thiab muaj zog dua.
g. Kev Ncaj: Ncaj cov yeeb nkab hlau txias kom tshem tawm nws qhov khoov deformation.
h. Kev tshuaj xyuas zoo: Ua kev tshuaj xyuas zoo ntawm cov kav hlau tiav lawm, suav nrog kev tshuaj xyuas qhov loj me, tuab ntawm phab ntsa, qhov nyuaj, qhov zoo ntawm qhov chaw, thiab lwm yam.
3. Cov txheej txheem tsim khoom ntawm cov yeeb nkab hlau tsis sib xws #Cov Yeeb Nkab Hlau Tsis Muaj Qhov Txuas#
3. Cov txheej txheem tsim khoom ntawm cov yeeb nkab hlau tsis sib xws #Cov Yeeb Nkab Hlau Tsis Muaj Qhov Txuas#
Cov txheej txheem tshwj xeeb ntawm kev tsim cov kav hlau tsis muaj seamless yog raws li nram no:
a. Npaj cov khoom siv raw: Xaiv cov hlau billets tsim nyog, uas tsis tas yuav muaj qhov tsis zoo, tsis muaj npuas, thiab tsis muaj kab nrib pleb ntawm qhov chaw.
b. Kev Ua Kub: Ua kom cov hlau billet kub mus rau qhov kub siab, qhov kub thiab txias dav dav yog 1000-1200 ℃.
c. Kev tho: Cov hlau billet uas tau cua sov raug tho rau hauv ib lub raj khoob los ntawm lub tshuab tho. Lub sijhawm no, lub raj khoob tseem tsis tau tsim tiav.
d. Kev dov yeeb nkab: Lub raj dawb paug raug xa mus rau lub tshuab dov yeeb nkab rau ntau qhov dov kom txo qhov txoj kab uas hla ntawm lub raj thiab ua kom phab ntsa tuab dua, thaum tshem tawm kev ntxhov siab sab hauv.
e. Rov ua kom sov: Rov ua kom sov lub raj xa dej kom tshem tawm nws cov kev ntxhov siab sab hauv.
f. Kev ntsuas qhov loj: Thaum kawg cov yeeb nkab hlau raug tsim los ntawm lub tshuab ntsuas qhov loj kom lub cheeb thiab phab ntsa tuab ntawm cov yeeb nkab hlau ua tau raws li tus qauv.
g. Kev Txias: Txias cov yeeb nkab hlau uas zoo li no, feem ntau yog siv dej txias lossis cua txias.
h. Kev Ncaj: Ncaj cov yeeb nkab hlau txias kom tshem tawm nws qhov khoov deformation.
i. Kev tshuaj xyuas zoo: Ua kev tshuaj xyuas zoo ntawm cov kav hlau tiav lawm, suav nrog kev tshuaj xyuas qhov loj me, tuab ntawm phab ntsa, qhov nyuaj, qhov zoo ntawm qhov chaw, thiab lwm yam.
Thaum lub sijhawm tsim khoom, cov ntsiab lus hauv qab no yuav tsum tau sau tseg: ua ntej, qhov zoo thiab ruaj khov ntawm cov khoom siv raw yuav tsum tau ua kom ntseeg tau; qhov thib ob, qhov kub thiab siab yuav tsum tau tswj hwm nruj me ntsis thaum lub sijhawm tho thiab dov cov txheej txheem kom tsis txhob muaj kab nrib pleb thiab deformation; thaum kawg, qhov loj thiab txias Qhov ruaj khov thiab ncaj ntawm cov yeeb nkab hlau yuav tsum tau tswj hwm thaum lub sijhawm ua haujlwm.
4. Kev tswj xyuas zoo ntawm cov kav hlau tsis muaj seamless
Yuav kom ntseeg tau tias cov kav hlau tsis muaj seamless zoo, cov hauv qab no yuav tsum tau tswj hwm:
a. Cov Khoom Siv Raw: Siv cov hlau zoo kom ntseeg tau tias tsis muaj qhov tsis zoo, npuas, lossis tawg ntawm qhov chaw. Tib lub sijhawm, nws yog qhov tsim nyog los xyuas kom meej tias cov tshuaj lom neeg thiab cov khoom siv kho tshuab ntawm cov khoom siv raw ua tau raws li cov qauv.
b. Cov txheej txheem tsim khoom: Tswj xyuas txhua txoj hauv kev kom ntseeg tau tias qhov zoo ntawm txhua txoj hauv kev ruaj khov thiab txhim khu kev qha. Tshwj xeeb tshaj yog thaum lub sijhawm tho thiab dov, qhov kub thiab siab yuav tsum tau tswj hwm kom tsis txhob muaj kab nrib pleb thiab deformation.
c. Qhov Loj: Ua kev tshuaj xyuas qhov loj ntawm cov kav hlau tiav lawm kom paub tseeb tias lawv txoj kab uas hla thiab phab ntsa tuab ua tau raws li cov qauv. Cov cuab yeej ntsuas tshwj xeeb tuaj yeem siv rau kev ntsuas, xws li micrometers, cov cuab yeej ntsuas phab ntsa tuab, thiab lwm yam.
d. Qhov zoo ntawm qhov chaw: Ua qhov kev tshuaj xyuas qhov zoo ntawm qhov chaw ntawm cov kav hlau tiav lawm, suav nrog qhov tsis sib xws ntawm qhov chaw, muaj kab nrib pleb, qhov quav thiab lwm yam tsis zoo. Kev kuaj pom tuaj yeem ua tiav los ntawm kev siv kev tshuaj xyuas pom lossis cov cuab yeej kuaj tshwj xeeb.
e. Cov qauv metallographic: Ua qhov kev sim cov qauv metallographic ntawm cov yeeb nkab hlau tiav lawm kom ntseeg tau tias nws cov qauv metallographic ua tau raws li cov qauv yuav tsum tau ua. Feem ntau, lub tshuab microscope siv los saib cov qauv metallographic thiab xyuas seb puas muaj qhov tsis zoo me me.
f. Cov khoom siv kho tshuab: Cov khoom siv kho tshuab ntawm cov kav hlau tiav lawm raug sim, suav nrog qhov nyuaj, lub zog tensile, lub zog tso zis thiab lwm yam ntsuas. Cov tshuab kuaj tensile thiab lwm yam khoom siv tuaj yeem siv rau kev sim.
Los ntawm cov kev ntsuas tswj xyuas zoo saum toj no, qhov zoo ntawm cov kav hlau tsis muaj seamless tuaj yeem ua kom ruaj khov thiab txhim khu kev qha, ua tau raws li qhov xav tau ntawm ntau yam kev siv.
5. Cov chaw siv rau cov kav hlau tsis muaj seamless
Cov kav hlau tsis muaj qhov tsis sib xws muaj ntau yam kev siv, feem ntau suav nrog cov hauv qab no:
a. Kev lag luam roj av: siv rau hauv cov kav dej roj, cov kav dej roj thiab cov kav dej tshuaj hauv kev lag luam roj av. Cov kav hlau tsis muaj qhov sib txuas muaj cov yam ntxwv ntawm lub zog siab, tiv taus corrosion, thiab tiv taus kub siab, thiab tuaj yeem ua kom muaj kev nyab xeeb thiab ruaj khov ntawm kev lag luam roj av.
b. Kev lag luam tshuaj lom neeg: Hauv kev lag luam tshuaj lom neeg, cov kav hlau tsis muaj qhov sib txuas tau siv dav hauv ntau yam kav dej tshuaj lom neeg, cov kav dej thauj dej, thiab lwm yam. Vim nws muaj zog tiv taus corrosion, nws tuaj yeem tiv taus kev yaig ntawm ntau yam tshuaj lom neeg, ua kom muaj kev nyab xeeb thiab kev ua haujlwm zoo ntawm kev lag luam tshuaj lom neeg.
Cov yeeb nkab hlau tsis muaj qhov (seamless steel yeeb nkab) yog cov hlau puag ncig uas muaj qhov khoob thiab tsis muaj cov xov nyob ib puag ncig nws. Nws muaj cov yam ntxwv ntawm lub zog siab, tiv taus corrosion, kub siab thiab tsis kub. Raws li cov txheej txheem tsim khoom sib txawv, cov yeeb nkab hlau tsis muaj qhov (seamless steel yeeb nkab) tuaj yeem muab faib ua ob hom: cov yeeb nkab kub dov thiab cov yeeb nkab txias dov. Cov yeeb nkab kub dov yog ua los ntawm kev ua kom cov hlau billets kub siab rau kev tho, dov, txias thiab lwm yam txheej txheem, thiab tsim nyog rau cov yeeb nkab hlau loj thiab nyuaj; cov yeeb nkab txias dov yog ua los ntawm kev dov txias ntawm chav tsev kub thiab tsim nyog rau kev tsim cov yeeb nkab hlau me me thiab cov yeeb nkab hlau siab dua.
Lub sijhawm tshaj tawm: Kaum Ib Hlis-28-2023
