Dab tsi yog qhov laj thawj tshwj xeeb rau kev hloov pauv loj hauv hardness ntawm H13 cov khoom tom qab tempering?

Kev tswj qhov kub thiab txias tsis raug, kev ua haujlwm tsis raug ntawm cov khoom ua haujlwm tsis zoo uas ua rau qhov tsis sib xws, qhov sib txawv ntawm cov khoom siv raw khoom, thiab lub voj voog tsis txaus yog thawj qhov ua rau muaj kev hloov pauv tseem ceeb hauv hardness ntawm H13 cov khoom tom qab tempering. Tag nrho cov ntsiab lus no muaj kev cuam tshuam txog kev hloov pauv microstructure li cas.

1. Kev soj ntsuam ntawm Thawj Qhov Tseem Ceeb

Ua rau muaj feem cuam tshuam

Tsis sib xws lossis loj hloov pauv hauv Tempering Kub: Cov cheeb tsam hauv cheeb tsam yuav dhau mus dhau -tempering (hardness < 48 HRC) lossis tsis txaus tempering (hardness> 52 HRC) thaum qhov kub sib txawv hauv qhov cub yog> ± 5℃. Lub hardness hloov ntawm 1 ~ 2 HRC tuaj yeem tshwm sim rau txhua ± 10 degree.

Txoj Kev Ua Haujlwm Tsis Txaus Siab: Thaum cov khoom ua haujlwm tau teeb tsa los yog qhov sib nrug tsawg dua li tsib centimeters sib nrug, cov cua kub ncig raug cuam tshuam, uas ua rau tsis sib xws hauv qhov "shielded area," tsim cov tawv tawv lossis muag muag.

Tsis txaus Tempering Cycles (Tsuas yog Ib qho): Thaum qhov kev ntxhov siab seem tsis tso tawm tag nrho, lub microstructure yuav tsis ruaj khov thiab muaj lub caij nyoog uas muaj kev ntxhov siab tuaj yeem rov zoo dua thaum ua haujlwm ntxiv lossis kev pabcuam, uas ua rau muaj kev sib faib tsis sib luag.

Variations nyob rau hauv Raw Material Composition: Lub uniformity ntawm tempering teb yuav cuam tshuam los ntawm cov kev hloov nyob rau hauv lub theem transformation kub los ntawm variations nyob rau hauv cov ntsiab lus ntawm alloying ntsiab xws li Cr, Mo, thiab V > 0.1%.

Variations nyob rau hauv Thick thiab Nyias Cheeb Tsam 'Tswj Cuab Cuab Yeej Thaum qhov loj dua txias dua maj mam thiab feem ntau yuav muaj cov pob mos mos-tshwj xeeb tshaj yog nyob rau hauv cov qauv pwm zoo sib xws- nyias- cov ntu phab ntsa txias sai thiab muaj qhov tawv tawv.

Tiag - piv txwv hauv ntiaj teb: Ib lub tuam txhab tempering furnace sensor malfunctioned, ua rau qhov tseeb kub yog 15℃qis dua qhov xav tau. Raws li qhov tshwm sim, ib pawg ntawm H13 nozzles dhau qhov kev qhia tshwj xeeb los ntawm 22%, nrog rau qhov nyuaj ntawm 46 txog 53 HRC.

2. Kuv tuaj yeem lees paub thiab lees paub li cas?

Multi-point hardness testing: Ib qho anomalous ib zaug -qhov sib txawv hardness ntau dua ob HRC yuav tsum tau soj ntsuam cov txheej txheem;

Metallographic tsom xam: Tshawb xyuas network carbides, untempered martensite, los yog microstructure coarsening;

Txheeb xyuas qhov ntsuas kub ntawm qhov cub kom pom seb puas muaj qhov cuam tshuam los yog qhov sib txawv ntawm qhov kub thiab txias, thiab seb qhov kub ntawm cov txheej txheem tempering yog li ntawm 550 thiab 600 degree;

Kev txheeb xyuas qhov sib xyaw: Kom paub tseeb tias txhua pawg ntawm cov khoom siv raw txaus siab, siv XRF los sib piv cov ntsiab lus ntawm Cr (5.0% ~ 5.5%), Mo (1.1% ~ 1.75%), thiab V (0.8% ~ 1.2%).

"Cov ntaub ntawv traceability, lub koom haum credibility, thiab cov txheej txheem controllability" yog qhov tseem ceeb ntawm kev nyab xeeb cov qauv.