Lub hom phiaj ntawm kev kho cua sov saum npoo yog dab tsi

① Txhim kho qhov hnav tsis kam ntawm qhov chaw. High-carbon martensitic hardened nto txheej yuav tau los ntawm carburizing thiab quenching ntawm steel qhov chaw; dispersion hardened nto txheej ntawm alloy nitride tuaj yeem tau los ntawm txoj kev nitriding rau alloy steel qhov chaw. Qhov saum npoo hardness ntawm cov hlau tau los ntawm ob txoj kev no tuaj yeem ncav cuag HRC58 ~ 62 thiab HV800 ~ 1200 raws li. Lwm txoj hauv kev yog tsim cov yeeb yaj kiab txo qis thiab tiv thaiv cov nplaum rau ntawm cov hlau los txhim kho cov kev sib txhuam, uas tuaj yeem txhim kho qhov hnav tsis kam. Piv txwv li, qhov chaw kho chav dej ua rau ferroferric oxide zaj duab xis uas muaj cov nyhuv anti-adhesion; cov vulcanization nto tau txais ferrous sulfide zaj duab xis, uas tuaj yeem muaj ob qho tib si los tiv thaiv hnav thiab tiv thaiv adhesion. Cov txheej txheem multi-element co-infiltration tsim nyob rau hauv xyoo tas los no, xws li oxygen-nitriding, sulfur-nitrogen co-infiltration, carbon-nitrogen-sulfur-oxy-boron tsib-element co-infiltration, thiab lwm yam., tuaj yeem ua ib txhij ua kom muaj siab. -hardness diffusion txheej thiab anti-sticking los yog anti-kev sib txhuam zaj duab xis, zoo txhim kho Cov hnav tsis kam ntawm qhov chaw, tshwj xeeb tshaj yog adhesion kuj.

Yuav

② Txhim kho qhov qaug zog ntawm qhov chaw. Carburizing, nitriding, mos nitriding thiab carbonitriding txoj kev tuaj yeem ua rau tag nrho cov hlau qhov chaw ntxiv dag zog thaum tsim cov residual compressive kev nyuaj siab rau ntawm qhov chaw, zoo txhim kho lub zog qaug zog ntawm qhov chaw.

Yuav

③ Txhim kho corrosion kuj thiab kub oxidation tsis kam ntawm qhov chaw. Piv txwv li, nitriding tuaj yeem txhim kho atmospheric corrosion kuj ntawm qhov chaw; Tom qab aluminizing, chromizing, thiab siliconizing steel qhov chaw, nws yuav hnov ​​​​mob nrog cov pa oxygen los yog corrosive media los tsim ntom thiab ruaj khov Al2O3, Cr2O3, SiO2 tiv thaiv zaj duab xis, txhim kho corrosion kuj thiab kub oxidation kuj.

Yuav

Feem ntau, steel qhov chaw yuav dhau los ua embrittlement thaum lawv hardened. Thaum cov txheej txheem deg hardening yog siv los ua kom lub ntsej muag hardness, cov tub ntxhais tseem tuaj yeem khaws cia rau hauv lub xeev toughness zoo, yog li nws tuaj yeem daws tau qhov tsis sib xws ntawm cov khoom tawv tawv ntawm cov hlau thiab nws cov tawv tawv dua li cov txheej txheem quench hardening ntawm cov khoom. Kev kho cua sov tshuaj hloov cov tshuaj muaj pes tsawg leeg thiab cov qauv ntawm qhov chaw ntawm cov hlau nyob rau tib lub sijhawm, yog li nws muaj txiaj ntsig zoo dua li cov txheej txheem hardening xws li siab thiab nruab nrab zaus hluav taws xob induction thiab nplaim taws quenching. Yog tias cov khoom nkag mus tau raug xaiv kom tsim nyog, txheej txheej txheej tsim nyog rau ntau yam kev ua tau zoo ntawm ntu tuaj yeem tau txais.