Dab tsi yog qhov quenching kub ntau ntawm cov trolley rauv

Dab tsi yog qhov quenching kub ntau ntawm lub bogie hearth rauv? Feem ntau, quenching kub ntau yog nqaim los ntawm 20 txog 35 ° C.

1. Lub dov bearing steel tom qab spheroidization thiab annealing muaj kev ua tau zoo, uas yog ib qho tseem ceeb heev rau loj zus tau tej cov rolling bearings ntawm ib tug tsis siv neeg sib dhos kab;

2. Tom qab spheroidizing dov bearing steel, lub trolley rauv muaj siab tiv taus qaug zog, hnav tsis kam thiab toughness tom qab quenching thiab kub tempering;

3. Rau dov bearing steel yam tsis muaj spheroidization, quenching kub ntau yog nqaim (20 ~ 35 ℃), tab sis tom qab spheroidization, quenching kub ntau yog nthuav mus rau 40 ~ 45 ℃, thiab nyiam overheating thiab deformation thiab tawg thaum quenching yog txo. . Rolling bearing steel spheroidizing annealing txheej txheem cov ntsiab lus Rolling bearing steel tuaj yeem txais yuav qeeb txias spheroidizing lossis sov spheroidizing txoj kev.

Nws yog feem ntau ntseeg hais tias qhov nruab nrab txoj kab uas hla ntawm kheej kheej carbides tom qab annealing yog 0.4 mus rau 0.5 μm. Thaum lub cheeb tsam ntawm spherical carbides nyob rau hauv lub quenched qauv ntawm lub trolley rauv yog 7 mus rau 8%, lub neej ntawm dov bearing.

Tom qab spheroidizing annealing, thaum lub cheeb tsam ntawm spherical carbides yog hais txog 15%, thiaj li yuav ua kom 7-8% ntawm spherical carbides nyob twj ywm tom qab quenching nyob rau hauv lub muffle furnace, qhov luaj li cas ntawm spherical carbides tom qab annealing yuav tsum tau nruj me ntsis tswj kom nws yog. nyob rau hauv thaj tsam ntawm 0.4 ~ 0.5μm. Vim li no, lub cub tawg ruaj khov thiab txhim khu kev qha yuav tsum tau siv rau spheroidizing annealing.