Dab tsi yog qhov tsis xws luag rau valve castings?

1. Lub stomata

Qhov no yog cov kab noj me me uas tsim los ntawm cov roj uas cov txheej txheem hlau solidification tsis khiav hauv cov hlau. Nws cov phab ntsa sab hauv yog du thiab muaj roj, uas muaj kev cuam tshuam siab rau ultrasonic nthwv dej, tab sis vim tias nws yog qhov yooj yim kheej kheej lossis ellipsoid, nws yog qhov tsis xws luag, uas cuam tshuam rau nws qhov kev xav ntawm amplitude. Cov huab cua qhov nyob rau hauv lub ingot yog flattened rau hauv ib cheeb tsam tsis xws luag tom qab forging los yog dov, uas yog ib qho txiaj ntsig kom pom los ntawm kev tshuaj xyuas ultrasonic.

2. Retraction thiab xoob qhov

Thaum lub casting los yog ingot txias thiab solidified, lub ntim yuav tsum shrink, thiab hollow defect tsis tuaj yeem ntxiv los ntawm cov kua hlau. Loj thiab concentrated vovities yog hu ua shrinkage qhov, thiab me me thiab tawg voids hu ua xoob. Raws li txoj cai ntawm thermal expansion thiab txias contraction, lub qhov shrinkage yog ua txhua yam kom muaj nyob, tab sis muaj cov duab sib txawv, qhov ntau thiab tsawg thiab txoj haujlwm nrog cov txheej txheem sib txawv, thiab nws dhau los ua qhov tsis xws luag thaum nws txuas mus rau lub casting lossis ingot lub cev. Yog hais tias lub ingot tsis txiav lub shrinkage qhov huv si thiab coj mus rau hauv lub forging qhov chaw, nws yuav ua tau ib tug residual shrinkage qhov (residual shrinkage qhov, residual shrinkage yeeb nkab).

3. Clip slag

Lub slag nyob rau hauv cov txheej txheem smelting los yog lub refractory ntawm lub cub tawg lub cev peels tawm mus rau hauv cov kua hlau, thiab yog kos rau hauv lub casting los yog steel ingot thaum pouring, ua rau lub slag clamp defect. Slag feem ntau tsis muaj nyob ib leeg, feem ntau nyob rau hauv ib lub xeev tuab los yog tawg ntawm qhov sib txawv qhov tob, nws zoo ib yam li ntim tsis xws luag tab sis feem ntau muaj qee yam linearity.

4. Sib xyaw

Cov khoom siv tshuaj tiv thaiv nyob rau hauv cov txheej txheem smelting (xws li oxide, sulfide, thiab lwm yam) - tsis yog xim hlau inclusions, los yog cov khoom siv ntxiv ntawm qee cov khoom hauv cov khoom hlau tsis yog melted tag thiab nyob twj ywm rau hauv cov hlau inclusions, xws li siab ceev, siab melting point Cheebtsam - tungsten, molybdenum, thiab lwm yam.

5. Nqe lus piav qhia

Kev sib cais hauv casting lossis ingot feem ntau yog hais txog cov khoom sib cais tsim nyob rau hauv qhov tsis sib xws ntawm cov khoom hauv cov txheej txheem smelting lossis cov txheej txheem melting ntawm hlau. Cov khoom siv kho tshuab ntawm thaj chaw nrog kev sib cais yog qhov sib txawv ntawm cov khoom siv kho tshuab ntawm tag nrho cov hlau matrix, thiab qhov sib txawv tshaj li qhov kev tso cai ntawm tus qauv yuav dhau los ua qhov tsis xws luag.

6. Casting tawg

Cov kab nrib pleb nyob rau hauv lub casting yog tsuas yog tshwm sim los ntawm lub shrinkage kev nyuaj siab ntawm cov hlau txias solidification tshaj qhov kawg lub zog ntawm cov khoom, nws muaj feem xyuam rau cov duab ntawm lub casting tsim thiab casting txheej txheem, thiab kuj muaj feem xyuam rau lub cracking rhiab heev ntawm ib co impurities nyob rau hauv cov khoom. cov ntaub ntawv hlau (xws li cov ntsiab lus sulfur siab, txias brittleness, siab phosphorus cov ntsiab lus, thiab lwm yam). Nyob rau hauv lub spindle, kuj yuav muaj kab nrib pleb nyob rau hauv lub ncej siv lead ua, thiab nyob rau hauv lub tom ntej no billet forging, nws yuav nyob twj ywm nyob rau hauv lub forging raws li lub internal tawg ntawm forging.

Dhau li ntawd, Tianjin Tanggu Dej Foob Valve Co., Ltd.roj hmab rooj wafer npauj npaim valve, lug npauj npaim valve, ob flange concentric npauj npaim valve, ob flangeeccentric npauj npaim valve, balance valve,wafer dual phaj kos valve, Y-Strainer thiab lwm yam. Ntawm Tianjin Tanggu Dej Foob Valve Co., Ltd., peb txaus siab rau peb tus kheej ntawm kev muab cov khoom lag luam thawj zaug uas ua tau raws li cov qauv kev lag luam siab tshaj plaws. Nrog peb ntau yam ntawm li qub thiab fittings, koj tuaj yeem ntseeg peb los muab cov kev daws teeb meem zoo tshaj plaws rau koj qhov dej. Tiv tauj peb hnub no kom paub ntau ntxiv txog peb cov khoom thiab peb tuaj yeem pab koj li cas.