Valve Investment Castings

Khoom Taw Qhia

Kev nqis peev casting txheej txheem
Valve peev castings yog li qub ua los ntawm casting. Feem ntau, cov qib siab ntawm cov cam khwb cia yog qhov qis (xws li PN16, PN25, PN40, tab sis kuj tseem muaj qhov siab siab, uas tuaj yeem ncav cuag 1500Lb, 2500Lb), thiab feem ntau ntawm cov diameters yog siab dua DN50.
1. Casting yog txheej txheem uas hlau yog smelted rau hauv cov kua uas ua tau raws li tej yam yuav tsum tau thiab poured rau hauv pwm. Tom qab txias, solidification, thiab tu, ib tug casting (ib feem los yog dawb paug) nrog predetermined zoo, loj, thiab kev ua tau zoo yog tau. Nws yog cov txheej txheem siv tshuab niaj hnub. Cov txheej txheem tseem ceeb hauv kev tsim khoom lag luam.
2. Tus nqi ntawm cov khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob khoob Nyob rau tib lub sijhawm, nws muaj kev hloov pauv dav dav thiab cov cuab yeej zoo txhua yam.
3. Txawm li cas los xij, cov ntaub ntawv (xws li hlau, ntoo, roj, cov khoom siv ua qauv, thiab lwm yam) thiab cov khoom siv (xws li metallurgical furnaces, sand mixers, molding machines, core make machines, shakeout machines, shot blasting machines, cast iron flat plates, thiab lwm yam) xav tau rau kev tsim cov casting), thiab yuav tsim cov plua plav, cov pa phem thiab cov suab nrov kom ua paug rau ib puag ncig.
4. Muaj ntau ntau hom casting, uas yog customarily muab faib ua: raws li tus qauv qauv:
① Ordinary xuab zeb casting, suav nrog ntsuab xuab zeb pwm, cov xuab zeb qhuav pwm thiab tshuaj lom neeg xuab zeb pwm.
② Tshwj xeeb casting, raws li cov ntaub ntawv molding, tuaj yeem muab faib ua ob pawg: tshwj xeeb casting nrog cov ntxhia pob zeb thiab pob zeb ua cov khoom tseem ceeb molding thiab tshwj xeeb casting nrog hlau ua cov khoom tseem ceeb pwm.
5. Cov txheej txheem casting feem ntau suav nrog:
① Kev npaj cov pwm pwm (cov thawv uas hloov cov hlau ua kua rau hauv cov khoom castings). Casting pwm tuaj yeem muab faib ua cov xuab zeb pwm, hlau pwm, ceramic pwm, av nplaum pwm, graphite pwm, thiab lwm yam raws li cov khoom siv. Casting pwm tuaj yeem muab faib ua cov khoom siv pov tseg thiab cov khoom siv ib nrab raws li tus naj npawb ntawm kev siv. Thiab cov pwm mus tas li, qhov zoo ntawm kev npaj pwm yog qhov tseem ceeb cuam tshuam rau qhov zoo ntawm castings;
② Melting thiab pouring ntawm cam khwb cia hlau. Cam khwb cia hlau (cam khwb cia alloys) feem ntau muaj xws li cam khwb cia hlau, cam khwb cia hlau thiab cam khwb cia non-ferrous alloys;
③ Casting processing thiab tshuaj xyuas. Casting processing muaj xws li tshem tawm cov khoom txawv teb chaws rau ntawm qhov chaw ntawm cov tub ntxhais thiab castings, tshem tawm sprues thiab risers, shoveling burrs thiab seams thiab lwm yam protrusions, nrog rau kev kho cua sov, shaping, anti-xeb kho thiab ntxhib machining.
 

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