Kev siv tshuab tsis zoo steel pob, feem ntau tsis xws luag yog raws li hauv qab no

1. Cov nplej loj: Cov nplej loj feem ntau yog tshwm sim los ntawm qhov kub ntawm qhov pib forging ntau dhau thiab tsis txaus deformation degree, los yog siab kawg forging kub, los yog qhov degree ntawm deformation poob rau hauv qhov tseem ceeb deformation cheeb tsam, yog li lub forging (rolling) steel npas yuav tsum yog. tswj tau zoo. Cov cua kub kub yog qhov tseem ceeb heev.

2. Cov nplej tsis sib xws: Cov nplej tsis sib xws txhais tau hais tias cov nplej ntawm qee qhov ntawm cov forging yog tuab, thaum qee qhov me me. Qhov laj thawj tseem ceeb ntawm cov nplej tsis sib xws yog tias qhov tsis sib xws ntawm cov pob zeb ua rau cov nplej tawg mus rau qhov sib txawv, lossis qhov deformation degree ntawm cheeb tsam hauv cheeb tsam poob rau hauv qhov chaw deformation tseem ceeb, lossis hauv zos ua haujlwm hardening ntawm superalloy, lossis hauv zos. grain loj thaum quenching thiab cua sov. tuab.

3. Chilling phenomenon: thaum lub forged (dov) steel pob yog deformed, vim qhov kub thiab txias deformation ceev heev, thiab ceev ceev ntawm qhov kub thiab txias tom qab forging, lub softening tshwm sim los ntawm recrystallization yuav tsis ua raws li lub zog ( hardening) tshwm sim los ntawm deformation. , yog li ntawd lub txias deformed qauv tseem yog ib feem nyob rau hauv lub forging tom qab kub forging. Lub hav zoov ntawm cov qauv no txhim kho lub zog thiab hardness ntawm forgings, tab sis txo cov plasticity thiab toughness. Kev txias txias thiab hardening yuav ua rau forging tawg.
4. Cracks: Cov kab nrib pleb feem ntau yog cov kev ntxhov siab sab hauv los ntawm qhov loj tensile kev nyuaj siab, shear stress los yog ntxiv tensile stresses thaum forging. Qhov chaw uas qhov tawg tshwm sim feem ntau yog nyob rau saum npoo los yog lub hauv paus ntawm lub pob steel. Muaj ob yam tseem ceeb ntawm cov kab nrib pleb ntawm no. Ib qho yog tias cov khoom siv hlau nws tus kheej muaj cov yam ntxwv tsis xws luag, xws li xoob, lossis khawb tob uas tshwm sim hauv cov txheej txheem dov ntawm cov hlau, thiab lwm qhov yog cov kab nrib pleb tshwm sim los ntawm qhov kub thiab txias hauv cov txheej txheem kho cua sov. , Qhov tshwm sim no feem ntau tshwm sim los ntawm qhov kub thiab txias quenching.