Qhov kub ntawm lub caij nplooj ntoos hlav steel yog dab tsi?

1) Lub caij nplooj ntoos hlav steel feem ntau yog silico-manganese hlau. Silicon tuaj yeem txhawb kev decarburization, thiab manganese tuaj yeem txhawb kev loj hlob ntawm cov nplej. Nto decarburization thiab grain loj hlob zoo heev txo qhov qaug zog ntawm tub rog rigidity. Yog li ntawd, kev xaiv thiab tswj cov cua kub cua sov, lub sij hawm cua sov thiab cua sov nruab nrab yuav tsum tau ceev faj. Xws li siv lub qhov cub ntsev kom cua sov sai thiab cua sov hauv qhov chaw tiv thaiv. Tom qab quenching, nws yuav tsum tau tempered sai li sai tau los tiv thaiv ncua kev puas tsuaj.

2) Lub caij nplooj ntoos hlav steel muaj cov ntsiab lus silicon siab thiab yooj yim rau graphitize thaum lub sij hawm kos duab, yog li yuav tsum tau them nyiaj mloog. Feem ntau, cov ntsiab lus graphite ntawm cov hlau yuav tsum tau kuaj xyuas thaum nws nkag mus rau hauv lub Hoobkas.

3) Tempering kub yog feem ntau 350 ~ 450 ℃. Yog hais tias cov hlau nto nyob rau hauv qhov zoo (xws li tom qab sib tsoo), qhov qis qis yuav tsum tau siv rau tempering; Nyob rau hauv tas li ntawd, lub sab sauv txwv kub yuav siv tau rau tempering los txhim kho lub toughness ntawm cov hlau thiab txo cov rhiab heev rau nto defects.