Lub raj dawb paug muaj kev cuam tshuam zoo rau kev tsim cov kav dej seamless steel, feem ntau nyob rau hauv cov nqe lus ntawm kev ruaj ntseg ntawm cov tshuaj muaj pes tsawg leeg ntawm cov hlau thiab purity ntawm cov hlau. Feem ntau, lub siab-siab raj blanks feem ntau txais yuav "hluav taws xob rauv + LF + VD" txheej txheem ntau lawm. Lub tshuab hluav taws xob arc rauv yog siv los smelt tsim nyog crude molten steel. Ntxiv nrog rau deoxidizing, desulfurizing thiab kub tswj cov hlau molten, txoj haujlwm tseem ceeb tshaj plaws ntawm LF rauv yog los kho qhov kub ntawm cov hlau molten. Cov tshuaj muaj pes tsawg leeg, VD rauv feem ntau yog purifies molten steel los xyuas kom meej lub purity ntawm molten steel. Raws li daim ntawv thov cov yam ntxwv ntawm high-pressure boiler hlab, smelting tswj technology ntawm boiler steel yog yuav tsum tau. Ntxiv nrog rau cov tshuaj muaj pes tsawg leeg ntaus lub hom phiaj, boiler steel kuj yuav tsum muaj siab purity thiab tsawg S thiab P teeb meem ntsiab. Tshwj xeeb, cov khoom S yuav tsum tau tswj nruj heev. , feem ntau vim hais tias S keeb yog lub ntsiab impurity uas ua rau cov tsis muaj zog ntawm cov thawj ciam teb thiab yog lub ntsiab tseem ceeb ua rau creep embrittlement ntawm hlau. Tau ntev, boiler raj tau tsim los ntawm forged tube blanks. Forged tube blanks tuaj yeem tsis tsuas yog tshem tawm cov kab noj hniav shrinkage, slag inclusions thiab lwm yam tsis xws luag ntawm cov hlau ingot, tab sis kuj tseem tuaj yeem tshem tawm qhov tsis xws luag los ntawm kev dov loj deformation.
Nyob rau hauv xyoo tas los no, nrog rau kev txhim kho ntau yam ntawm cov cuab yeej metallurgical thiab cov cuab yeej siv, kev nruam casting thiab dov txheej txheem ntawm lub raj blanks tau nce sai heev vim nws qhov zoo ntawm kev ua haujlwm siab, kev siv tsawg, zoo thiab tus nqi qis. Txhawm rau kom ntseeg tau qhov zoo ntawm qhov chaw, lub raj khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob. Kev tshawb nrhiav txoj hauv kev xws li kev sib nqus qhov tsis zoo, ultrasonic phased array flaw detection lossis infrared flaw detection, thiab lwm yam kev txhawb nqa xws li deg tev tawm thaum pom qhov tsis xws luag.
