Laser hardening yog txheej txheem kev lag luam saum npoo uas siv lub tshuab hluav taws xob laser siab kom kub ceev thiab tom qab ntawd tua cov hlau kom nce hardness thiab hnav tsis kam.Internal laser hardeningyuav siv cov txheej txheem no mus rau sab hauv ntawm cov khoom hlau los xaiv harden internal bores thiab kab noj hniav. Thaum ob txoj kev vam khom lub zog laser los hloov cov khoom siv, lawv cov txheej txheem thiab kev siv sib txawv.
Hauv tsab xov xwm no, peb yuav tshuaj xyuas cov pa laser hardening ua ntej thiab tom qab ntawd tshawb xyuas qhov ua rau sab hauv laser hardening tshwj xeeb. Peb mam li sib piv cov cua kub txoj kev, hardening qhov tob, ua tiav hardness, cuam tshuam microstructures, txwv, thiab zoo tagnrho cov kev siv ntawm txhua tus txheej txheem. Kev nkag siab txog lub peev xwm ntawm ob txoj kev siv laser no muab kev nkag siab txog cov txheej txheem twg ua haujlwm zoo tshaj plaws rau cov kev xav tau tshwj xeeb.
Txheej txheem cej luam ntawm Laser Hardening
Laser hardening, los yog laser nto hardening, yog ib tug zoo-tsim thermal txheej txheem siv los ua kom hardness thiab durability ntawm hlau tivthaiv nto. Lub zog hluav taws xob laser precisely heats saum txheej ntawm lub workpiece rau hauv lub pas dej ua ke uas sai sai dissipates thiab quenches.
Qhov no thermal gradient induces martensitic microstructural transformations uas impart 2 mus rau 5 npaug ntau dua nto hardness. Cov txheej txheem tseem ceeb muaj xws li:
- Ceev melting thiab solidification ntawm nyias txheej txheej
- Tshem tawm kev tsim ntawm cov theem softer xws li ferrite / pearlite
- Martensitic microstructure tsim thaum lub sij hawm quenching ceev
- Kev daws teeb meem ntxiv dag zog los ntawm carbide dissolution
- Grain refinement ntawm martensite
Laser hardening muab xaiv hardening tsuas yog qhov xav tau, tsawg distortion, thiab cov txiaj ntsig zoo ib yam. Cov kev txwv muaj xws li cov kev xav tau ntawm txoj kab ntawm kev pom thiab feem ntau cov teebmeem ntawm qhov tawv tawv.
Internal Laser Hardening txawv li cas
Internal laser hardening tau tsim los kov yeej txoj kab-ntawm-pom qhov kev txwv ntawm cov pa laser hardening. Nws tso cai rau qhov chaw hauv qhov bores, kab noj hniav, thiab indentations yuav tsum tau xaiv hardened siv ib tug sab hauv laser beam xa.
Lub laser beam kis tau los ntawm fiber ntau optic cables rau hauv qhov chaw sab hauv. Lub tsom iav tsom ces coj cov nqaj mus rau thaj chaw sab hauv thaum lub workpiece tig. Qhov no ua rau nkhaus sab hauv geometries yuav tsum hardened yam tsis tau ncaj qha sab nraud kab-ntawm-pom.
Qhov sib txawv tseem ceeb piv rau sab nraud laser hardening muaj xws li:
- Hardening ntawm sab hauv qhov chaw mus txog 60mm hauv txoj kab uas hla
- Tsawg zog ceev yuav tsum tau nyob hauv qhov chaw kaw
- Nce hardening qhov tob txog li 6 hli ntawm qhov chaw
- Muaj peev xwm harden concave thiab sidewall nto
- Tsawg kawg sab nrauv cua sov lossis hloov xim
- Txwv rau qhov chaw cylindrical thiab geometries
- Relies ntawm tsawg tsim fiber ntau laser tshuab
Qhov sib sib zog nqus hardening tshwm sim los ntawm ntau lub sij hawm laser raug rau ntawm txhua feem ntawm lub rotating sab hauv nto. Qhov no tso cai rau cov cua sov nkag mus rau sab hauv ntxiv.
Achievable Hardness thiab cuam tshuam hlau cheeb tsam
Nyob rau hauv tus qauv laser hardening, lub siab zog ceev ceev heats ib tug nyias txheej tsawg tshaj li 1 hli sib sib zog nqus ua ntej dissipating rau hauv lub txias hauv qab hlau. Qhov no ua rau cov tawv tawv feem ntau nyob rau hauv 0 1-0.5 hli ntawm saum npoo. Hardness ranges ntawm 50 mus rau 70 HRC nyob ntawm cov hlau alloy.
Sab hauv laser hardening tuaj yeem tsim hardness txog 60 HRC ob peb millimeters hauv qab ntawm qhov chaw. Qhov nce hardening qhov tob yog qhov tseem ceeb rau cov ntawv thov uas xav tau ntau dua hnav tsis kam nyob rau hauv qhov chaw. Txawm li cas los xij, thaj chaw hardness cuam tshuam tseem nyob hauv thaj chaw zoo li laser hardening.
Microstructural Hloov
Nyob rau hauv ob qho tib si txheej txheem ceev ceev cua sov thiab txias induces martensitic microstructure tsim. Qhov no hloov softer pearlite thiab ferrite kom hardness thiab zog. Cov txheej txheem ntawm cov nplej refinement, kev hloov pauv carbide, thiab cov kua nplaum muaj zog tuaj yeem tshwm sim.
Qhov sib txawv nyob rau hauv qhov tob uas cov kev hloov microstructural txuas mus rau hauv qab ntawm qhov chaw, ua tob tob nrog rau sab hauv laser hardening. Txawm li cas los xij, qhov degree ntawm hardness attained yog qhov kawg piv.
Kev siv zoo tshaj plaws thiab kev txwv
Sab nraud laser hardening ua haujlwm zoo rau cov tiaj tus lossis contoured sab nrauv tivthaiv. Internal laser hardening tshwj xeeb ua rau sab hauv cylindrical bores thiab kab noj hniav kom xaiv hardened yam tsis muaj disassembly.
Cov ntawv thov piv txwv muaj xws li:
Laser hardening - iav, ncej, li qub, turbine hniav, xovxwm tuag
Internal laser hardening - Cav thooj voos kheej kheej, phom phom, hydraulic kheej kheej, extruder chim, bearing haiv neeg
Cov kev txwv muaj xws li cov kev xav tau rau txoj kab ncaj nraim-ntawm-pom pom hauv laser hardening thiab tshwj xeeb cylindrical geometry rau sab hauv hardening. Lwm txoj hauv kev tuaj yeem ua haujlwm zoo dua rau cov duab nyuaj.
Nyob rau hauv cov ntsiab lus, internal laser hardening muab ib tug tshwj xeeb muaj peev xwm los harden sab hauv nto tshaj qhov ncav cuag ntawm sab nraud laser hardening. Kev nkag siab txog qhov zoo sib piv thiab cov kev txwv yuav pab txheeb xyuas qhov twg laser hardening mus kom ze yog qhov zoo raws li qhov xav tau hardening qhov chaw, qhov tob, thiab cov khoom siv geometry. Nrog ob txoj kev xaiv laser raws li tam sim no muaj, engineers tuaj yeem qhia cov txheej txheem zoo tshaj plaws rau txhua daim ntawv thov kev xav tau hardness.
Xi'an Guosheng Laser Technology Co., Ltd. yog lub tuam txhab high-tech tshwj xeeb hauv R & D, tsim thiab muag cov tshuab laser tsis siv neeg cladding, high-speed laser cladding tshuab, laser quenching tshuab, laser vuam tshuab thiab laser 3D tshuab luam ntawv. Peb cov khoom raug nqi zoo thiab muag hauv tsev thiab txawv teb chaws. Yog tias koj txaus siab rau peb cov khoom, thov hu rau peb ntawmbob@gshenglaser.com.