Kev coj ua zoo tshaj plaws rau Vuam Tungsten Carbide Cov Lus Qhia rau Pom Hniav

    Vuam tungsten carbide (WC) cov lus qhia rau cov hniav yog ib qho tseem ceeb ntawm cov txheej txheem uas txhim khu kev ua tau zoo thiab kev ua haujlwm ntev ntawm cov cuab yeej txiav. Tungsten carbide muaj npe nrov rau nws cov tawv tawv thiab hnav tsis kam, ua rau nws yog cov khoom siv zoo tagnrho rau cov ntawv thov uas xav tau qhov tseeb thiab ua haujlwm ntev. Txawm li cas los xij, cov txheej txheem vuam yuav tsum tau ua tiav nrog kev saib xyuas kom muaj kev sib raug zoo thiab kev ua haujlwm zoo. Tsab ntawv xov xwm no qhia txog cov kev coj ua zoo tshaj plaws rau kev siv vuam tungsten carbide cov lus qhia rau cov hniav, tsom rau cov txheej txheem, kev npaj, thiab kev ruaj ntseg zoo.

1. Xaiv txoj kev vuam zoo

    Kev xaiv ntawm txoj kev vuam cuam tshuam rau qhov zoo ntawm daim ntawv cog lus ntawm cov lus qhia tungsten carbide thiab cov saw hniav substrate. Cov txheej txheem muaj xws li:

▷ TIG Welding:Cov txheej txheem no muab kev tswj xyuas meej ntawm cov khoom siv hluav taws xob, ua rau nws tsim nyog rau vuam tungsten carbide. Kev siv cov khoom siv hluav taws xob tsis zoo tiv thaiv kev sib kis, ua kom muaj kev sib txuas huv. TIG vuam yog tshwj xeeb tshaj yog zoo rau nyias carbide cov lus qhia, qhov twg kev tswj kub yog qhov tseem ceeb.

▷ MIG Vuam:Thaum feem ntau nrawm dua TIG, MIG vuam yuav qhia tau ntau dua cua sov rau hauv qhov chaw ua haujlwm, uas tuaj yeem cuam tshuam rau carbide kev ncaj ncees. Nws muaj feem xyuam rau cov ntaub ntawv tuab dua thiab cov nqi ntau lawm.

▷ Laser vuam:Cov txheej txheem qib siab no txo qis rau thaj tsam kub ntxhov (HAZ) thiab tso cai rau kev tswj xyuas meej, txo qhov kev pheej hmoo ntawm kev puas tsuaj rau cov carbide. Laser vuam yog zoo tagnrho rau daim ntaub ntawv uas yuav tsum tau tsawg distortion.

▷Brazing:Txawm hais tias tsis yog txheej txheem vuam ib se, brazing tuaj yeem siv los koom nrog tungsten carbide rau steel substrates. Txoj kev no siv cov hlau muab tub lim uas melts ntawm qhov kub thiab txias, yog li khaws cia cov khoom ntawm carbide.

2. Npaj cov workpieces

    Kev npaj nto zoo yog qhov tseem ceeb rau kev ua tiav qhov muaj zog weld. Qhov chaw ntawm ob lub tswv yim tungsten carbide thiab cov hniav hlau yuav tsum tau muab ntxuav kom huv si kom tshem tau cov kab mob xws li roj, roj, lossis oxidation. Txoj kev tu kom zoo muaj xws li:

▷ Abrasive Blasting:Cov txheej txheem no npaj cov nto los ntawm kev tsim cov ntxhib ntxhib ntxhib los mos, txhim kho cov khoom sib txuas.

▷ Chemical Cleaning:Siv cov kuab tshuaj los yog cov tshuaj ntxuav tes tuaj yeem tshem tawm cov kab mob zoo yam tsis muaj kev hloov pauv ntawm qhov profile.

3. Tswj cov cua kub nkag

    Kev tswj cov khoom siv hluav taws xob yog ib qho tseem ceeb tshaj plaws ntawm cov lus qhia vuam tungsten carbide. Cov cua kub ntau dhau tuaj yeem ua rau carbide coarsening, uas cuam tshuam hardness thiab hnav tsis kam. Cov kev coj ua zoo tshaj plaws suav nrog:

▷ Siv Pulsed Vuam:Cov txheej txheem no txo qhov nruab nrab cov cua sov nkag thaum tso cai rau kev nkag mus txaus.

▷ Saib xyuas Welding Parameters:Kev kho kom zoo ntawm qhov voltage, amperage, thiab kev mus ncig ceev tuaj yeem pab tswj kom pom cov cua sov zoo.

▷ Preheating lub substrate:Qee zaum, preheating steel hniav tuaj yeem pab txo qis thermal shock thiab txo qhov yuav ua rau tawg.

4. Kev kho tom qab vuam

Kev kho cua sov tom qab vuam yog qhov tseem ceeb rau kev tshem tawm cov kev ntxhov siab seem thiab txhim kho cov khoom siv ntawm cov vuam. Cov kev coj ua uas muaj xws li:

▷ Tempering:Cov txheej txheem no suav nrog cua sov cov welded sib koom ua ke rau qhov kub thiab txias ua raws li kev tswj kom txias, uas tuaj yeem txhim kho toughness thiab txo brittleness.

▷ Kev Ruaj Ntseg:Kev ua kom muaj kev ntxhov siab los ntawm kev kho cua sov tuaj yeem pab txo cov kev ntxhov siab thaum lub sij hawm vuam, ua kom muaj kev ncaj ncees ntawm daim ntawv cog lus.

5. Kev Tswj Xyuas Zoo

    Ua raws li kev tswj xyuas kom zoo yog qhov tseem ceeb los xyuas kom meej qhov kev ntseeg tau thiab kev ua tau zoo ntawm cov lus qhia welded tungsten carbide. Cov kev coj ua uas pom zoo muaj xws li:

▷Non-Destructive Testing (NDT):Cov txheej txheem xws li kev kuaj ultrasonic, kuaj hluav taws xob, lossis kev kuaj tshuaj dye penetrant tuaj yeem txheeb xyuas qhov tsis xws luag hauv qhov vuam yam tsis muaj kev puas tsuaj.

▷ Visual Inspection:Kev soj ntsuam kom pom tseeb ntawm thaj chaw weld tuaj yeem pab txheeb xyuas qhov tsis sib xws lossis cov cim qhia ntawm kev sib txuas tsis zoo.

▷ Ua raws li cov qauv:Ua raws li cov qauv kev lag luam thiab cov kev qhia tshwj xeeb, xws li cov tsim los ntawm American Welding Society (AWS), ua kom zoo thiab ua tau zoo.

Xaus

Kev ua tiav vuam tungsten carbide cov lus qhia rau cov saw hniav yuav tsum tau ua tib zoo saib xyuas cov txheej txheem, kev npaj, thiab kev tswj kom zoo. Los ntawm kev xaiv txoj kev vuam tsim nyog, tswj cov khoom siv hluav taws xob, thiab siv cov txheej txheem tshuaj xyuas zoo, cov tuam txhab tsim khoom tuaj yeem tsim cov cuab yeej txiav zoo uas ua tau raws li qhov xav tau ntawm ntau yam kev siv. Raws li kev siv thev naus laus zis, kev txhim kho txuas ntxiv hauv kev siv vuam yuav txuas ntxiv txhim kho kev ua tau zoo thiab ua haujlwm ntev ntawm tungsten carbide txiav cov cuab yeej, ua kom lawv lub luag haujlwm hauv kev tsim khoom niaj hnub thiab machining.