"Hardfacing" thiab "cladding" yog ob lo lus uas feem ntau siv synonymously, qhov tseeb lawv yog cov kev siv sib txawv. Hardfacing yog cov txheej txheem vuam uas siv lub ntsej muag siab los ntxiv kev tiv thaiv thiab txuas ntxiv lub neej ntawm cov khoom. Muaj cov carbide thiab, feem ntau, qhov no yog cemented carbide, zoo li ib pawg ntawm cov hlaws hlaws dai rau ntawm ib sab.

Cladding yog daim ntawv thov ntawm cov hlau tsis sib xws rau saum npoo ntawm lwm cov hlau. Cladding feem ntau yog siv cov khoom sib tshooj uas zoo ib yam li cov khoom siv hauv paus tab sis feem ntau siv cov khoom sib txawv los muab cov khoom muaj txiaj ntsig zoo rau ib feem ntawm cov khoom, xws li siab hardness, corrosion resistance, los yog tsuas yog ua kom tau raws li kev kho dua tshiab. Raws li nrog cladding, laser hardfacing tsis tuaj yeem machined thiab yuav tsum yog hauv av.

Hardfacing VS. Cladding txheej txheem

Txawm li cas los xij hardfacing thiab cladding yog cov txheej txheem txheej txheej saum npoo uas sib txawv ntawm cov khoom siv uas ua tau raws li cov kev xav tau sib txawv, lawv ob leeg tuaj yeem ua tiav siv cov txheej txheem zoo sib xws:

•       Lasers

•      Thermal spray

•      Flux-cored arc vuam lossis FCAW

•      Plasma Transfer Arc [PTA] vuam

Kev xaiv ntawm hardfacing thiab cladding los ntawm cov yam ntxwv uas koj xav kom muab, cov ntaub ntawv muab kev koom tes, thiab ib qho kev nkag siab ntawm ib puag ncig uas cov nto yog ib yam nkaus thiab. Nyob rau hauv hardfacing, hnyav, hnav-resistant carbide / hlau tso nyiaj yuav siv tau los ntawm laser, thermal spraying, spray-fuse, los yog vuam. Thermal spraying yog qhov zoo tshaj plaws rau cov khoom rhiab rau cov cua sov distortion, tsis zoo li cov tshuaj tsuag-fuse uas yuav tsum tau siv cov nplaim hluav taws thiab fusion nrog lub teeb. Thermal spray tsis yog txheej txheem vuam; Yog li ntawd, daim ntawv cog lus lub zog yog tsawg heev piv rau ib tug welded los yog brazed overlay. Cov tsoos weld hardfacing tuaj yeem siv los siv cov txheej tuab heev (txog 10's ntawm mm) ntawm cov khoom hnav-tiv taus. Laser hardfacing muaj txiaj ntsig zoo dua lwm cov txheej txheem feem ntau vim tias nws yog cov txheej txheem vuam uas muaj cua sov qis, qis dilution, thiab tsawg dua ntawm cov carbide. Qhov no tag nrho ua rau muaj peev xwm ua tau kom nyias nyias hardfacing overlays.

Cladding yog txheej txheem weld overlay yielding ib tug tag nrho qhov chaw tshiab uas yuav siv tau nrog ntau yam ntaub ntawv overlay nyob rau hauv ntau yam ntaub ntawv xws li hmoov, hlau, los yog cored hlau. Dab tsi ntxiv, cov txheej txheem txheej txheem txheej txheem tuaj yeem siv raws li teev saum toj no. Ib yam li laser hardfacing, laser cladding muaj txiaj ntsig zoo dua lwm cov txheej txheem feem ntau vim nws yog cov txheej txheem vuam uas muaj cua sov thiab qis dua. Qhov no tag nrho ua rau muaj peev xwm ua tau zoo heev nyias clad overlays.

Laser hardfacing thiab cladding yog siv nyob rau hauv yuav luag txhua lub lag luam kev lag luam nrog cov kev siv xws li:

•      Roj thiab roj

•       Automotive

•      Khoom siv

•  Ua liaj ua teb

•      Mining

•       Tub rog

•      Zog tsim

•      Kho thiab kho dua tshiab ntawm cov cuab yeej, turbine blades, thiab engines

Laser hardfacing thiab laser cladding ob leeg muab qhov zoo ntawm me ntsis thermal distortion, siab productivity, thiab nqi-zoo.

Lasers hauv Hardfacing thiab Cladding txheej txheem

Siv cov lasers ua qhov cua sov hauv hardfacing thiab cladding muab precision thiab qis tshaj ntawm cov tshuaj dilution rau vuam ob cov ntaub ntawv. Nws muab txoj hauv kev zoo los siv cov khoom siv qis dua los ntawm kev siv cov khoom siv sib txuas, uas muab cov corrosion, oxidation, hnav, thiab kub tsis kam. Tus nqi ntau lawm nrog cov khoom twg tuaj yeem ua tiav ua ke nrog cov khoom siv tau zoo ua rau laser cladding thiab hardfacing ib qho kev xaiv nrov rau ntau qhov kev lag luam.