Puas yog 45 # steel yuav tsum tau tempered?

Qhov xav tau ntxiv tempering yog txiav txim los ntawm qhov xwm txheej. Yog tias qhov seem ntawm qhov kub thiab txias tuaj yeem tswj tau thaum lub sijhawm quenching, tsis tas yuav tsum muaj qhov kub thiab txias ntxiv.

Cov qauv thiab cov khoom ntawm 45 # steel tom qab annealing, normalizing, quenching thiab tempering.

45 # steel annealing: ferrite + pearlite;

45 # steel normalizing: ferrite + pearlite;

45 # steel quenching: martensite;

45 # steel tempering: tempered martensite (tsis kub tempering), tempered troostite ( nruab nrab kub tempering), tempered sorbite ( kub tempering).

Cov qauv ntawm 45 # hlau tom qab normalizing yog ferrite + pearlite qauv, cov qauv tom qab quenching yog martensite qauv, thiab cov qauv tom qab quenching + 400 ℃ tempering yog tempered troostite qauv. Lub normalizing kev ua tau zoo hardness tsawg dua HB200, tab sis cov khoom yog ib qho yooj yim rau machined, uas tseem yog lub ntsiab txheej txheem txoj kev npaj. quenching +400 ℃ tempering hardness yog zoo heev, saum HB300.

Lub hardness ntawm 45 # steel quenched thiab tempered yog nyob nruab nrab ntawm HRC20 ~ HRC30;

Lub quenching hardness ntawm 45 # hlau yog nruab nrab ntawm HRC55 ~ 58, thiab tus nqi tuaj yeem ncav cuag HRC62;

Nws yuav siv sij hawm 15-20 hnub rau 45 # steel siv vim nws xav tau kev kho kev laus kom ruaj khov ntawm cov hlau.

Qhov siab tshaj plaws hardness hauv daim ntawv thov yog HRC55 (high-frequency quenching HRC58).

45 # steel yog cov khoom siv zoo carbon steel uas tsis tshua muaj zog thiab ua haujlwm yooj yim. Nws yog feem ntau siv hauv pwm ua cov qauv, cov lus qhia, cov lus qhia, thiab lwm yam, tab sis yuav tsum tau kho cua sov