Kev sib txhuam hauvforgingyog kev sib txhuam ntawm ob hlau ntawm cov khoom sib txawv thiab cov khoom (alloys), nruab nrab ntawm cov hlau mos (workpiece) thiab cov hlau tawv (tuag). Nyob rau hauv cov ntaub ntawv ntawm tsis muaj lubrication, yog kev sib cuag kev sib txhuam ntawm ob hom hlau nto oxide zaj duab xis; Nyob rau hauv cov xwm txheej lubrication, kev sib cuag ntawm cov oxide zaj duab xis ntawm ob lub hlau nto thiab lub lubricating nruab nrab feem, thiab kev sib txhuam ntawm cov txheej sab hauv ntawm lub workpiece, uas tseem tsis tau oxidized thiab muaj zog adsorption zoo, thiab kev sib txhuam ntawm qhov nruab nrab lubricating thiab qhov chaw ntawm qhov tuag thiab qhov tseeb kev sib txhuam (sib cuag) cheeb tsam yog nce.

Vim muaj kev sib txhuam yam ntxwv ntawm qhov dawb paug thiab tuag qhov chaw nyob rau hauv lubtxheej txheem forging, cov txiaj ntsig hauv qab no yuav tshwm sim:
(1) Lub zog deformation nce 10% vim kev sib txhuam, thiab kev siv zog nce ntxiv;
(2) kev sib txhuam ua rau qhov tsis sib xws ntawm forgings, yog li ntawd cov qauv hauv cov nplej thiab kev ua haujlwm tsis sib xws, thiab qhov zoo ntawm qhov chaw txo qis;
(3) kev sib txhuam ua rau txo qis ntawm cov duab geometric thiab qhov tseeb qhov tseeb ntawm forgings, uas ua rau cov seem ntawm forgings thaum lub forgings yog unfilled tiag;
(4) kev sib txhuam ua rau hnyav hnav ntawm qhov tuag thiab ua rau nws lub neej luv;
(5) Ua kom muaj kev sib txhuam hauv zos ntawm cov kab noj hniav tuaj yeem ua rau cov kab noj hniav uas nyuaj rau sau cov hlau zoo thiab txo qhov tsis kam lees.
Nws tuaj yeem pom tias kev sib txhuam yog ib rab ntaj ob sab hauvforging ntau lawm, uas muaj ob qhov zoo thiab qhov tsis zoo. Yog li ntawd, kev sib txhuam hauv cov txheej txheem forging yuav tsum nruj me ntsis tswj kom ntseeg tau cov txheej txheem forging ib txwm.