Cov li qub casting yog cov li qub ua los ntawm kev casting. Feem ntau, qhov ntsuas siab ntawm cov li qub casting yog qis dua (xws li PN16, PN25, PN40, tab sis kuj muaj cov siab siab, uas tuaj yeem ncav cuag 1500Lb, 2500Lb), thiab feem ntau ntawm lawv cov calibers yog siab dua DN50. Cov li qub forged yog forged thiab feem ntau siv rau hauv cov kav dej qib siab nrog cov calibers me me, feem ntau qis dua DN50.
1. Kev pov thawj
1. Kev Txhaj Tshuaj: Nws yog cov txheej txheem ntawm kev sib xyaw hlau rau hauv cov kua uas ua tau raws li qee yam yuav tsum tau ua thiab nchuav rau hauv pwm. Tom qab txias, khov, thiab ntxuav, kev txhaj tshuaj (ib feem lossis dawb paug) nrog cov duab, qhov loj me thiab kev ua tau zoo tau txiav txim siab. Cov thev naus laus zis yooj yim ntawm kev lag luam tsim khoom siv niaj hnub.
2. Cov ntaub plaub uas tsim los ntawm kev cam khwb cia kuj pheej yig, thiab tuaj yeem qhia nws cov txiaj ntsig zoo rau cov khoom uas muaj cov duab nyuaj, tshwj xeeb tshaj yog nrog cov qhov sab hauv nyuaj; tib lub sijhawm, nws muaj kev hloov pauv dav thiab cov khoom siv kho tshuab zoo dua.
3. Cov ntaub ntawv (xws li hlau, ntoo, roj, cov ntaub ntawv ua qauv, thiab lwm yam) thiab cov khoom siv (xws li cov cub tawg hlau, cov tshuab sib tov xuab zeb, cov tshuab molding, cov tshuab ua lub hauv paus, cov tshuab shakeout, cov tshuab tua blasting, cov hlau cam khwb cia phaj, thiab lwm yam) uas xav tau rau kev tsim khoom casting) Yog ntau dua, thiab yuav tsim cov hmoov av, cov pa roj phem thiab suab nrov thiab ua rau ib puag ncig puas tsuaj.
4. Casting yog ib hom kev siv tshuab ua hlau thermal uas tib neeg tau kawm ua ntej, nrog rau keeb kwm txog li 6000 xyoo.
Xyoo 3200 BC, kev siv tooj liab los ua qav tau tshwm sim hauv Mesopotamia. Nruab nrab ntawm xyoo pua 13th BC thiab xyoo pua 10th BC, Tuam Tshoj tau nkag mus rau lub sijhawm zoo tshaj plaws ntawm kev siv tooj liab los ua.
Cov txuj ci tes ua tau mus txog qib siab heev, xws li 875 kg Simuwu Fangding Ding los ntawm Shang Dynasty, Zenghou Yizun phaj los ntawm Warring States Period, thiab daim iav translucent los ntawm Western Han Dynasty yog txhua tus sawv cev ntawm kev casting thaum ub.
cov khoom. Kev pov thawj thaum ntxov tau cuam tshuam loj heev los ntawm cov tais diav av nplaum, thiab feem ntau ntawm cov pov thawj yog cov cuab yeej lossis cov khoom siv rau kev ua liaj ua teb, kev ntseeg, thiab lub neej.
Cov xim kos duab muaj zog heev. Xyoo 513 BC, Tuam Tshoj tau tsim cov hlau cam khwb cia thawj zaug hauv ntiaj teb (kwv yees li 270 kilograms hnyav), uas tuaj yeem pom hauv cov ntaub ntawv sau tseg.
Nyob ib ncig ntawm lub xyoo pua 8th, Tebchaws Europe tau pib tsim cov hlau castings. Tom qab Kev Hloov Pauv Kev Lag Luam hauv xyoo pua 18th, kev castings tau nkag mus rau lub sijhawm tshiab ntawm kev pabcuam rau cov lag luam loj.
Nyob rau hauv lub xyoo pua 20th, kev loj hlob sai ntawm kev casting tau tsim. Nodular cast iron, malleable cast iron, ultra-low carbon stainless steel, aluminium copper, aluminium silicon, thiab aluminium-magnesium alloys tau tsim ua tiav.
Kev siv cov hlau xws li titanium thiab nickel alloys los ua cov khoom siv, thiab tau tsim cov txheej txheem tshiab rau kev txhaj tshuaj grey cast iron. Tom qab xyoo 1950, kev ua qauv siab ntawm cov xuab zeb ntub tau tshwm sim,
Kev ua qauv xuab zeb tawv thiab ua lub hauv paus, kev ua qauv siab tsis zoo, lwm yam kev casting tshwj xeeb, kev tua blasting thiab lwm yam thev naus laus zis tshiab.
5. Muaj ntau hom kev casting, uas muab faib ua: ① Kev casting xuab zeb ib txwm muaj, suav nrog 3 hom xuab zeb ntsuab, xuab zeb qhuav thiab xuab zeb tawv. ② Kev casting tshwj xeeb, raws li cov khoom siv ua qauv, tuaj yeem muab faib ua kev casting tshwj xeeb nrog cov xuab zeb ntuj thiab cov xuab zeb ua cov khoom siv ua qauv tseem ceeb (xws li kev casting peev, kev casting av nplaum, kev casting workshop plhaub casting, kev casting siab tsis zoo, kev casting khoom, kev casting ceramic) thiab lwm yam) thiab kev casting tshwj xeeb nrog hlau ua cov khoom siv pwm tseem ceeb (xws li kev casting pwm hlau, kev casting siab, kev casting tas mus li, kev casting siab qis, kev casting centrifugal, thiab lwm yam).
6. Cov txheej txheem casting feem ntau suav nrog: ① Kev npaj cov pwm (cov thawv uas ua cov hlau ua kua rau hauv cov khoom castings khov). Cov pwm tuaj yeem muab faib ua xuab zeb, hlau, ceramic, av nplaum, graphite, thiab lwm yam, raws li tus naj npawb ntawm kev siv. Rau kev pov tseg, semi-tas mus li thiab tas mus li, qhov zoo ntawm kev npaj pwm yog qhov tseem ceeb uas cuam tshuam rau qhov zoo ntawm castings; ② Kev yaj thiab nchuav cov hlau cam khwb cia, cam khwb cia hlau (casting alloys) feem ntau suav nrog cam khwb cia hlau, cam khwb cia hlau thiab cam khwb cia tsis yog-ferrous alloys; ③ Kev ua casting thiab kev tshuaj xyuas. Casting processing suav nrog kev tshem tawm cov khoom txawv teb chaws ntawm lub hauv paus thiab qhov chaw ntawm castings, tshem tawm cov pouring risers, shoveling ntawm burrs thiab drape seams, nrog rau kev kho cua sov, shaping, anti-xeb kho thiab rough machining. Import twj tso kua mis valve

Nortech yog ib qho ntawm cov chaw tsim khoom lag luam valve hauv Suav teb nrog daim ntawv pov thawj zoo ISO9001.

Cov khoom tseem ceeb:Npauj Npaim Valve,Lub Pob Valve,Rooj vag Valve,Tshawb xyuas Valve,Globe Vavlve,Y-Strainers,Lub Tshuab Hluav Taws Xob,Pneumatic Accurators.