Hlau nto hardening

Ntawd yog, qhov saum npoo yog tawv thiab sab hauv yog mos. High-frequency quenching: Muab lub workpiece tso rau hauv lub siab zaus coil thiab txuas cov high-frequency tam sim no kom induce tam sim no nyob rau hauv lub workpiece. Lub high-frequency tam sim no yog concentrated nyob rau saum npoo ntawm lub workpiece, yog li tsuas yog lub nto ntawm lub workpiece yog rhuab. Nplaim quenching: Siv cov nplaim ntawm cov pa oxygen, acetylene thiab lwm yam roj rau cua sov. Carburizing thiab quenching: Txhawm rau muab cov khoom ua haujlwm rau hauv tus neeg sawv cev carburizing, cov khoom siv carburizing xws li charcoal thiab coke, kua carburizing cov neeg ua haujlwm xws li potassium cyanate, thiab cov pa roj carbon monoxide yog siv los ua kom cov pa roj carbon monoxide ntau dua ntawm cov hlau nto. . Nws tuaj yeem ncav cuag qhov tob hauv millimeters. Nitriding: Ib txoj hauv kev nkag mus rau nitrogen rau saum npoo ntawm cov hlau. Muaj cov roj nitriding los ntawm decomposing ammonia thiab kua nitriding los ntawm cyanic acid. Qhov kom zoo dua yog tias tsuas yog cua sov tsis tas yuav quenching thiab tempering, thiab cov cua kub kub yog qis dua li carburizing, yog li ntawd lub workpiece yuav tsis deformed. Qhov tsis zoo yog tias lub sijhawm ua haujlwm ntev. Mos nitriding (nitrocarburizing) yog ib txoj hauv kev siv ntsev da dej nrog cyanate (KCNO) ua cov khoom tseem ceeb. Txawm hais tias hardness tau tsis siab, lub sijhawm kho yog luv.