Tungsten Steel Waterjet Nozzle PM Sintered Parts

Khoom Taw Qhia

Tungsten steel waterjet nozzle PM sintered qhov chaw yog nias thiab sintered tungsten-cobalt alloy. Vim nws qhov siab hardness (HRA90), zoo heev hnav tsis kam, thiab corrosion kuj, lub nozzle tau dav siv nyob rau hauv sandblasting, tua peening, tshuaj tsuag tsuag, thiab lwm yam khoom siv, uas ua kom paub tseeb tias cov khoom yuav siv tau nyob rau hauv lub sij hawm ntev. zoo tshaj plaws cua thiab abrasive. Qhov zoo ntawm tungsten carbide nozzles: Corrosion kuj, lub neej ua haujlwm ntev, kev ua haujlwm zoo, kev ua haujlwm siab, thiab tsis yooj yim rau hnav.

Lub invention belongs rau lub teb ntawm hmoov metallurgy, thiab muaj feem xyuam rau ib tug superhard cemented carbide cov ntaub ntawv thiab ib txoj kev npaj ntawm no, tshwj xeeb tshaj yog, rau ib tug cemented carbide cov ntaub ntawv rau ib tug dej dav hlau nozzle thiab ib tug npaj txoj kev.

Cov txheej txheem keeb kwm yav dhau

Xyoo 1968, Dr. Norman Franz, tus xibfwb ntawm University of Michigan, tau tsim lub tshuab hluav taws xob siab dej dav hlau, tseem hu ua dej dav hlau txiav. Xyoo 1974, Lub Tuam Txhab Flow ntawm Tebchaws Meskas tau ua tiav cov dej ntshiab dav hlau txiav rau kev tsim khoom lag luam. Nyob rau xyoo 1980, Tebchaws Meskas tau ua tus thawj coj hauv kev ua kom cov dej abrasive dav hlau txiav tshuab mus rau theem ua tau zoo, ua rau cov khoom txiav ntau dua. Ntawm ntau txoj kev txiav, tsuas yog lub tshuab hluav taws xob high-pressure waterjet txiav belongs rau txias txiav, uas muaj ntau yam zoo: nws tuaj yeem ua ib zaug txiav ntawm ib qho nkhaus ntawm cov khoom, thiab cov khoom tom qab txiav tsis xav tau lossis yooj yim rau kev ua tiav. dua, uas yog yooj yim, hloov tau thiab ntau yam. Kev dav; tsis txhob siv cov tshuaj lom, cov pa phem lossis cov kua ua kua, tsis txhob tsim cov tshuaj lom lossis cov pa; slit tsis tsim cov cua sov uas cuam tshuam rau cheeb tsam los yog txhua yam deformation; tuaj yeem ua cov ntaub ntawv uas tsis tuaj yeem ua tiav lossis nyuaj rau kev ua haujlwm los ntawm lwm txoj hauv kev, xws li ceramics, cov ntaub ntawv sib xyaw, tshuaj fiber ntau, cov ntaub ntawv kub-rhiab, thiab lwm yam.; kev nyab xeeb, kev tiv thaiv ib puag ncig, ceev ceev, thiab kev ua haujlwm siab. Noj laser txiav ua piv txwv rau kev sib piv, txawm hais tias lub laser yog superior rau dej dav hlau txiav nyob rau hauv cov nqe lus ntawm kev ceev nyob rau hauv nyias phaj txiav, laser txiav nqi yog siab nyob rau hauv hlau txiav saum toj no 16 hli, thiab tseem muaj ib tug kub-tshem tawm tsam nyob ib ncig ntawm lub kerf ntawm laser txiav. Lub thickness ntawm waterjet txiav cov ntaub ntawv hlau feem ntau tuaj yeem ncav cuag ntau dua 30-100 hli, thiab nws tsis muaj kev cuam tshuam rau cov khoom siv.

Lub hauv paus ntsiab lus ntawm kev ua haujlwm ntawm lub dav hlau dej siab yog txhawm rau txhawm rau cov kua dej mus rau 200-400mpa ib kauj ruam nrog lub tshuab hluav taws xob ultra-high-pressure supercharger, thiab tom qab ntawd dhau los ntawm lub nozzle nrog txoj kab uas hla tsawg dua {{4} }.2 hli los tsim lub dav hlau nrog kev ceev txog li 1000m / s thiab lub zog kinetic zoo. Cov kab dej ua rau lub dav hlau dej muaj zog, txau rau ntawm qhov chaw ua haujlwm, thiab rhuav tshem nws. Ntxiv cov abrasives xws li quartz xuab zeb, alumina, corundum, thiab lwm yam abrasive dav hlau txiav, lub dav hlau dej muaj cov yam ntxwv ntawm cov saw hniav, lub txiav quab yuam yog zoo heev, thiab yuav luag txhua yam khoom nyuaj yuav raug txiav.

Vim yog kev ua haujlwm hnyav ntawm lub dav hlau dej siab, qhov kev ua tau zoo rau cov khoom siv ntawm lub dav hlau dej nozzle yog qhov siab heev. Lub hardness ntawm cov khoom siv high-pressure dej dav hlau nozzle yuav tsum muaj ntau dua 2700hv, thiab cov khoom siv yuav tsum muaj cov txheeb ze siab heev thiab tsis muaj qhov tsis xws luag xws li qhov thiab cov kab nrib pleb. , Kev ua haujlwm zoo thiab kev cuam tshuam tsis zoo.

Qhov sib ntxiv ntawm ib theem binder rau cov tsoos cemented carbide yuav txo cov hardness thiab mechanical zog ntawm cemented carbide. Thiab nyob rau hauv ib puag ncig hnyav, cov ntawv cog lus no yuav raug corroded thiab oxidized dua li cov theem nyuaj, uas kuj txo lawv cov hnav tsis kam thiab corrosion kuj. WC (tungsten carbide)-raws li cemented carbide yam tsis muaj binder theem yog hais txog WC cemented carbide cov khoom uas tsis muaj los yog muaj tsawg dua 0.5 wt feem pua ​​CO. Piv nrog cov tsoos cemented carbide, wc-based cemented carbide tsis muaj binder theem muaj zoo heev hnav tsis kam, corrosion kuj, zoo heev polishability, thiab lwm yam superior mechanical zog. Txawm li cas los xij, tungsten carbide yog carbide nrog lub siab melting point (2870 degree). Thaum tsis muaj cov txheej txheem khij nyiab, nws yog qhov nyuaj heev kom tau txais cov cemented carbide ntom ntom uas tsis muaj qhov sib khi uas siv cov txheej txheem sintering.

Cov kev tshawb fawb uas twb muaj lawm tau pom tias los ntawm kev txo cov nplej loj ntawm wc sintering hmoov, sintering kub tuaj yeem txo tau, thiab tib lub sijhawm, cov nplej loj tuaj yeem ua kom zoo dua qub, qhov tawv tawv tuaj yeem nce ntxiv, thiab cov khoom siv kho tshuab tuaj yeem txhim kho; Loj, ntxiv hfc (hafnium carbide) ua ib qho inhibitor tuaj yeem cuam tshuam nws cov qoob loo loj hlob; spark plasma sintering (spark plasma sintering, hu ua sps) muaj qhov zoo ntawm cov cua kub ceev thiab txias thiab qis sintering kub, zam kev loj hlob ntawm cov txheej txheem sintering zoo heev coarsening.

Hlau Txhaj Moulding txheej txheem

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