1. Ua kom tiav annealing: ua kom tiav annealing yog txheej txheem kev kho cua sov uas cov hlau tau rhuab mus rau 20-30 degree saum AC3, khaws cia kom sov rau lub sijhawm ntev txaus, thiab maj mam txias nrog lub cub tawg kom tau txais cov qauv ze-equilibrium. . Nws yog tsuas yog siv nyob rau hauv cov hlau hypoeutecoid, thiab nws lub hom phiaj yog los kho cov nplej, tshem tawm cov kev ntxhov siab sab hauv thiab ua hauj lwm hardening, txhim kho cov yas toughness, ua cov tshuaj muaj pes tsawg leeg thiab cov qauv ntawm cov hlau sib xws, txhim kho cov kev ua tau zoo ntawm cov hlau, thiab tshem tawm qhov tsis xws luag. xws li Widmanstätten qauv thiab banded qauv nyob rau hauv nruab nrab-carbon structural steel.
2. Incomplete annealing: Incomplete annealing is a heat treatment process in which the steel is rated to between AC1-AC3 (hypoeutectoid steel) los yog AC1-ACcm (hypereutectoid steel), cia sov rau ib lub sij hawm. ntawm lub sij hawm, thiab ces maj mam txias nrog lub cub tawg kom tau ib tug nyob ze-equilibrium qauv. Rau cov hlau hypoeutectoid, yog tias cov qauv kev faib tawm ntawm cov hlau yog qhov tsim nyog, qhov tsis tiav annealing tuaj yeem siv los ua kom tiav annealing kom tshem tawm cov kev ntxhov siab sab hauv thiab txo cov tawv nqaij. Rau hypereutectoid steel, tsis tiav annealing yog tsuas yog kom tau txais cov qauv pearlite kom tshem tawm cov kev ntxhov siab sab hauv, txo cov tawv tawv, thiab txhim kho kev ua haujlwm.
3.Spheroidizing annealing: Spheroidizing annealing yog txheej txheem kev kho cua sov uas spheroidizes carbides hauv steel kom tau granular pearlite. Nws yog tsuas yog siv rau eutectoid steel, hypereutectoid steel thiab alloy cuab tam 3 steel. Nws lub hom phiaj yog kom txo cov hardness, txhim kho kev ua tau zoo, kev sib koom ua ke, thiab npaj rau quenching.
Seamless Pressure Yeeb Nkab
