Rolling txheej txheem ntawm Steel Rail
Cov txheej txheem dov ntawm steel rail koom nrog shaping thiab tsim cov hlau rau hauv qhov xav tau rail profile los ntawm kev ua haujlwm dov. Cov txheej txheem feem ntau yuav siv qhov chaw nyob rau hauv ib lub tsheb ciav hlau, qhov twg cov hlau ua rau kub dov kom ua tiav qhov tsim nyog qhov ntev thiab cov khoom. Nov yog cov kauj ruam tseem ceeb hauv kev dov ntawm steel rail:
Cov txheej txheem dov ntawm steel rail muaj cua sov steel billets los yog tawg, ua raws li cov txheej txheem dhau los ntawm cogging, roughing, nruab nrab, thiab tiav mills kom ua tiav cov kev tsheb ciav hlau tshwj xeeb, suav nrog lub taub hau, lub vev xaib, thiab hauv paus. Cov hlau yog ua tib zoo tswj thiab txias kom txo tau cov kev ntxhov siab sab hauv, ua kom ncaj, txiav, thiab kev tswj xyuas nruj kom ua raws li cov qauv kev lag luam. Cov txheej txheem tsim khoom no tau hloov pauv cov hlau tsis zoo rau hauv cov kev tsheb ciav hlau zoo npaj rau kev siv hauv kev tsheb ciav hlau, ua kom muaj kev ruaj ntseg, kev nyab xeeb, thiab kev ua haujlwm zoo hauv kev tsheb ciav hlau.
