Cov khoom siv tsis zoo ntawm lub pob ntsia hlau feem ntau yog tshwm sim los ntawm qhov sib txawv ntawm qib ntawm lub network carbide ntawm GCr15 cov khoom lossis qhov sib txawv ntawm lub koom haum spheroidized annealing (nrog lamellar pearlite). Los ntawm qhov tsis sib xws refinement tsom xam thiab kev tsom xam microstructure ntawm cov ntsia hlau tawg, qhov sib txawv ntawm qib ntawm lub network carbide lossis qhov sib txawv ntawm cov qauv spheroidized annealing ntawm cov ntsia hlau suav txog li 40 feem pua ntawm tag nrho. Lub inhomogeneity ntawm carbides ua rau tsis sib npaug ntawm qhov chaw hardness thiab kev ntxhov siab sab hauv tom qab induction hardening ntawm cov ntsia hlau, thiab cov kev ntxhov siab sab hauv ntawm carbides yog cov concentrated nyob rau hauv cov concentrated qhov chaw. Nyob rau hauv tus txheej txheem ntawm cov ntsia hlau sib tsoo, vim hais tias qhov kev ntxhov siab sab hauv ntawm qhov no tshaj qhov tawm los lub zog ntawm cov khoom, kev sib tsoo tawg yuav tshwm sim. Lub xub ntiag ntawm flaky pearlite ua rau coarse nplej nyob rau saum npoo ntawm cov ntsia hlau tom qab induction hardening, uas txo cov yield zog ntawm cov hlau. Thaum cov ntsia hlau yog hauv av, qhov kev ntxhov siab sab hauv tshaj tawm lub zog ntawm cov khoom thiab ua rau sib tsoo tawg.
In the actual production process, due to the large mass production of the factory, the microstructure of steel >60mm nrog cov tsis zoo carbide inhomogeneity yog qhov nyuaj kom ncav cuag qhov tsim nyog qib 24. Yog li ntawd, cov neeg siv yuav tsum tau ua lub cev thiab tshuaj ntsuam xyuas ntawm cov hlau tuaj. Rau cov hlau tsis zoo carbide inhomogeneity kuaj pom, forging→normalizing→spheroidizing annealing kev kho yuav tsum tau nqa tawm; rau pob screws, steels nrog inhomogeneous spheroidizing annealed steel microstructures yuav tsum raug rau spheroidizing annealing kho dua kom txog rau thaum Carbide inhomogeneity thiab spheroidizing annealing qauv ntawm cov hlau yog tsim nyog.
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