Yuav ua li cas tswj lub deformation thiab tawg ntawm cov khoom siv hluav taws xob ntau zaus thaum quenching

Vim muaj kev sib xyaw ua ke ntawm cov qauv kev ntxhov siab thiab kev ntxhov siab thermal, kev kub ceev steel txiav cov cuab yeej feem ntau deformed thiab tawg, thiab yog qhov tseem ceeb rau cov cuab yeej loj loj, nyuaj thiab slender txiav.

Muaj ntau qhov laj thawj rau deformation thiab tawg, xws li kev ntxhov siab ua haujlwm txias hauv kev txiav cov cuab yeej ua ntej kev kho cua sov, thawj cov kab nrib pleb, loj carbide segregation, siab zaus quenching kub siab heev, txias ceev heev, tu ntxov ntxov thiab tsis raws sij hawm tempering, thiab lwm yam. Yog hais tias cov carbide segregation nyob rau hauv high-ceev steel ntau tshaj qhov teev, nws yuav pom tseeb tias deformation thiab tawg. Kev sib cais ntawm carbides yuav ua rau deformation thiab cracking, vim hais tias nyob rau hauv tej yam kev mob ntawm quenching txheej txheem, lub loj feem ntawm carbon thiab cov degree ntawm alloying qhov twg cov carbides deposits yog siab tshaj nyob rau hauv lwm qhov chaw, yog li cov Ms point muaj qis dua, (siab. Lub tshuab vuam zaus) ua rau kev hloov pauv ntawm austenite mus rau martensite nyob rau ntau thaj tsam, uas ua rau kom muaj kev ntxhov siab ntau ntxiv. Qhov tshwm sim ntawm kev ntxhov siab, txawm tias thaum lub sij hawm quenching los yog tempering, tuaj yeem ua rau deformation lossis tawg ntawm lub workpiece ntawm qhov chaw ntawm carbide segregation.

Txhawm rau txo qhov deformation thiab tawg, cov khoom siv raw yuav tsum tau soj ntsuam nruj me ntsis thiab cov quenching kub yuav tsum nruj me ntsis tswj. Rau cov cuab yeej txiav nrog cov duab tsis yooj yim, ntau qhov preheating thiab ntau txoj kev grading quenching yuav tsum tau siv, uas tuaj yeem txo qhov deformation ntawm cov cuab yeej txiav. Tsis tas li ntawd, cov clamps tsim nyog tuaj yeem siv los tswj kev deformation thiab txo qhov tawg.