Kauv steel kav yog tsim los ntawm coiling low-carbon carbon structural steel los yog low-alloy structural steel strips rau hauv cov yeeb nkab billet ntawm ib lub kaum ntse ntse tshwj xeeb (lub npe hu ua lub kaum sab xis), ua raws li vuam seam kom tiav cov yeeb nkab. Cov txheej txheem no tso cai rau kev tsim cov kav hlau loj loj uas siv cov hlau nqaim. Cov specifications ntawm kauv steel kav yog qhia nyob rau hauv cov nqe lus ntawm txheej kab thiab phab ntsa thickness. Welded kav yuav tsum tau kuaj hydrostatic los xyuas kom meej tias lawv cov pob qij txha ua tau raws li qhov yuav tsum tau muaj zog tensile thiab txias dabtsi yog khoov cov qauv.
Cov kav hlau uas muaj qhov sib npaug ntawm sab nraud-rau-phab ntsa thickness tsawg dua 20 yog cais raws li cov kav dej tuab-walled kauv. Cov kav dej no feem ntau yog siv rau hauv daim ntawv thov xws li roj thiab roj drilling, petrochemical cracking, boiler piping, bearing pipes, thiab high-precision structural kav rau tsheb, tsheb laij teb, thiab aviation.
Lub hom phiaj tseem ceeb ntawm kev tswj kev tsim khoom rau cov kav dej tuab-walled kauv yog txhawm rau txhim kho cov ductility thiab toughness ntawm cov kav hlau, txhim kho kev huv ntawm cov hlau molten, txo cov teeb meem cuam tshuam, thiab thaum kawg txhawb nqa tag nrho cov kav dej. Thaum lub sijhawm tsim khoom, lub tshuab ua kom txias tsim nyog tau txais los tiv thaiv cov kab nrib pleb sab hauv, yog li txhim kho cov yeeb nkab zoo los ntawm ntau lub kaum ntse ntse.
Cov txheej txheem ntawm cov kav dej kauv muaj ntau cov kauj ruam, nrog rau cov kauj ruam kawg yog qhov txo qis ntawm yob ceev. Yob ceev yog ib qho tseem ceeb parameter nyob rau hauv cov txheej txheem tho. Raws li lub yob ceev nce los ntawm qis mus rau siab, muaj ib qho tseem ceeb yob ceev uas delamination pib tshwm sim. Thaum qis yob ceev, cov yeeb nkab billet yog qhov ua rau kab noj hniav, qhov chaw siab dua, lub billet thiab 45 # structural kauv steel kav yuav tsim delamination delamination. Txhawm rau tshem tawm cov teeb meem no, lub yob ceev yuav tsum tau txo qis hauv qab qhov ceev ceev uas qhov delamination pib tshwm sim.
Thaum lub sij hawm tsim cov kav dej kauv, nws yog ib qho tseem ceeb kom tswj tau qhov kub thiab txias. Los ntawm kev ntsuas qhov kub ductility nkhaus, qhov ntsuas kub zoo tuaj yeem xaiv tau. Tsis tas li ntawd, cov yeeb nkab billet yuav tsum tau rhuab nrog lub sij hawm txaus los txo qhov deformation tsis kam thiab txhim khu cov ductility thiab toughness ntawm 45 # cov qauv tuab-walled kauv kav.
