Xaiv ib casting stainless hlau Hoobkas tsis yog hais txog kev nrhiav tus nqi qis tshaj. Nws yog hais txog kev txheeb xyuas tus khub uas nkag siab tias yuav ua li cas 0.02 hli kam rau ntawm lub rooj zaum valve txhais ua 18 lub hlis ntawm kev ua haujlwm tsis muaj kev cuam tshuam hauv kev ua haujlwm offshore hydraulic. Peb tau pom ntau qhov chaw nres tsheb - tsis yog los ntawm kev tsim teeb meem, tab sis los ntawm kev tsis sib haum xeeb uas tsuas yog ntog tom qab kev kho cua sov los yog thaum lub sij hawm ntsuas siab.
Vim li cas Stainless Hlau Casting xav tau ntau tshaj li qhov Foundry
Stainless hlau tsis yog poured li grey hlau. Nws cov ntsiab lus siab chromium thiab npib tsib xee nce yaj viscosity, txhawb oxide tsim, thiab shrink sib txawv thaum lub sij hawm solidification. Ib qho chaw tsim khoom lag luam tuaj yeem cuam tshuam cov tshuaj lom neeg-tab sis nco txog microstructural uniformity, ua rau ua rau qaug zog ntxov ntxov hauv cov twj tso kua mis hloov los yog hauv zos pitting nyob rau hauv cov cheeb tsam uas muaj chloride. Ntawm peb qhov chaw nyob hauv Qingdao, txhua qhov stainless hlau casting pib nrog AMS 5387-raws li T800 alloy billets-certified, traceable, thiab pre-tuaj tseeb rau grain loj thiab cov ntsiab lus suav ua ntej melting pib.
Peb tsis kho casting raws li ib tug standalone kauj ruam. Nws yog thawj theem ntawm cov txheej txheem nruj nreem: peev casting → kev ntxhov siab-relief annealing → precision CNC machining → qhov kawg seem validation ntawm Zeiss Contura G2 CMM. Thaum tus neeg siv khoom xa daim duab kos rau lub piston twj tso kua mis lub tog raj kheej vaj tsev, peb cov kws ua haujlwm tam sim ntawd hla cov phab ntsa thickness piv rau cov ntaub ntawv simulation solidification - thiab cov chij seem uas cov xuab zeb nrum geometry yuav ntxiab porosity. Qhov ntawd tsis yog theoretical. Hauv ib txoj haujlwm North American oilfield, peb ntes tau 4.2 hli sab hauv lub vojvoog uas yuav tau tsim qhov chaw kub thaum lub sij hawm centrifugal casting. Redesigning nws mus rau 6.5 hli tshem tawm tom qab machining rejection tus nqi los ntawm 92%.
Vertical Integration daws cov ntsiab lus mob ntau lawm
Feem ntau cov neeg yuav khoom los ntawm kev sib cais los ntawm machining - tom qab ntawd sib tw nrog cov ntaub ntawv tsis raug, thermal distortion ntawm cov txheej txheem, los yog cov khoom tsis sib haum. Peb tswj tag nrho cov saw hlau. Peb lub tuam txhab ISO 9001-certified Rhiav muaj ob qho tib si induction furnaces rau stainless thiab cobalt-nickel alloys * thiab * 5-axis DMG MORI cov cav tov muaj peev xwm ua tiav cam khwb cia qhov chaw nyob rau hauv ± 0.015 hli yam tsis rov kho.
Qhov kev sib koom ua ke no muab peb qhov txiaj ntsig ntsuas tau:
- Dimensional stability: Castings raug tswj kom txias hauv cov pwm insulated, tom qab ntawd txo kev ntxhov siab ntawm 1050 ° C ua ntej kev ua haujlwm ntxhib - txo qis kev ntxhov siab los ntawm ntau dua 70% piv rau cov qauv cua txias.
- Nto kev ncaj ncees: Tsis tas yuav tsum tau blasting los yog acid pickling ua ntej zaum kawg. Peb cov xuab zeb-cam khwb cia stainless qhov ua tiav Ra ≤ 3.2 µm as-cam khwb cia; peev castings ncav cuag Ra ≤ 1.6 µm-npaj rau passivation lossis electropolishing.
- Kev npaj ua haujlwm: Lub siab li qub nkoj nrog cov ntawv qhia txog kev ntsuas hydrostatic, cov ntaub ntawv xau-kuaj, thiab GD&T-raws li cov ntaub ntawv tshuaj xyuas - tsis yog cov ntawv txheeb xyuas.
Thaum "Standard" cov ntaub ntawv poob luv-Thiab yuav ua li cas hloov
Qee tus engineers default rau 316 stainless rau txhua yam. Tab sis nyob rau hauv cov ntaub ntawv hnav-zoo li winch center ncej chais rau ntawm lub tsheb mining - 316 tsis muaj hardness thiab galling kuj. Peb niaj hnub hloov nrog kev cai-forged 17-4PH H900 lossis AMS 5387 cobalt alloy, nyob ntawm kev thauj mus los thiab qhov kub thiab txias.
Lub twj tso kua mis European OEM ib zaug tau hais rau 304 rau lub cev dej hiav txwv-txias valve. Lawv cov qauv ua tsis tau tiav kev kuaj tshuaj ntsev tom qab 320 teev. Peb npaj siab hloov mus rau F51 duplex stainless-tib yam casting txoj kev, tib pwm, tab sis 22% siab dua PREN (Pitting Resistance Equivalent Number). Qhov kho dua tshiab dhau 2,000-teev kev sim nrog xoom pitting. Tus nqi nce 14%. Lub neej txuas ntxiv 4.7 ×. Qhov kev sib pauv ntawd? Cov ntaub ntawv nyob rau hauv lawv cov ntaub ntawv kho mob.
Qhov kev xa khoom ntseeg tau zoo li cas
"Kev xa khoom raws sijhawm" txhais tau tias muaj ntau yam sib txawv. Rau cov thawj tswj kev yuav khoom, nws yog hnub tim. Rau cov pab pawg ua haujlwm, nws muaj qhov hloov pauv tiag tiag - kho cua sov, tshuaj xyuas, thiab sau npe - thaum lub rig kaw. Peb kaw lub qhov rais xa khoom thaum lub sijhawm tshuaj xyuas engineering, tsis yog tom qab kev txiav txim pom zoo. Peb cov kev ua haujlwm lean suav nrog lub sijhawm tsis siv rau kev kuaj xyuas metallurgical, tsis yog lub sijhawm siv tshuab xwb.
Rau cov qauv txiav txim, lub sijhawm ua haujlwm pib * tom qab * GD&T validation - tsis yog tom qab PO tau txais. Rau nruab nrab-ntev ntim (50-500 pcs), peb khaws cov khoom siv raw khoom rau cov qib sib xws (316L, F22, 17-4PH) thiab tuav cov qauv tswv rau 12 feem ntau thov geometries - nrog rau lub siab lub cev valve, twj tso kua mis, thiab lub tog raj kheej vaj tse. Qhov ntawd txo cov sij hawm rov qab txiav txim dua los ntawm 35% ntawm qhov nruab nrab.
Yog koj xav tau ib casting stainless hlau Hoobkas uas kho koj cov khoom xws li lub hom phiaj tseem ceeb-tsis yog ib feem ntawm cov khoom lag luam-pib nrog cov khoom siv taug qab, thov kev tswj cov txheej txheem sib xyaw, thiab xyuas seb lawv daws qhov sib txawv ntawm qhov tshwj xeeb thiab kev ua tau zoo hauv ntiaj teb. Tus khub zoo yuav tsis tsuas yog nchuav hlau. Lawv yuav cia siab tias qhov twg koj tus qauv tsim tau raws li lub cev - thiab pab koj txuas nws.
