Thaum cov engineers qhia grey hlau casting rau high-lub luag hauj lwm hydraulic li qub los yog lub twj tso kua mis vaj tse, lawv tsis yog tsuas yog xaiv ib tug khoom-lawv betting rau seem stability nyob rau hauv thermal cycling, zoo ib yam graphite flake faib thoob plaws tshav kub ntau, thiab nto kev ncaj ncees tom qab machining. Yog vim li cas xaiv txoj cai grey hlau casting tuam txhab tsis yog hais txog daim ntawv qhia lossis ntawv pov thawj ib leeg. Nws yog hais txog tus cwj pwm pov thawj hauv kev tsim khoom hauv ntiaj teb tiag tiag: yuav ua li cas lub chaw tsim khoom ua haujlwm ua haujlwm kub hnyiab thaum lub sijhawm ua haujlwm 72-teev, txawm tias nws cov xuab zeb pwm compaction cov ntaub ntawv teev cov ntaub ntawv tuaj yeem taug qab rau txhua qhov casting ntau, thiab yog tias nws lub khw CNC tuaj yeem tuav ± 0.015 hli ntawm 320 hli bore - * tom qab * kev ntxhov siab.
Peb tau pom ntau qhov chaw nres tsheb vim tias tus neeg muag khoom tau kho cov hlau grey li "tsuas yog cam khwb cia hlau" - tsis quav ntsej qhov kev hloov pauv me me hauv cov pa roj carbon sib npaug (CE), tus nqi cua txias, lossis lub sijhawm shakeout ncaj qha cuam tshuam rau kev ua haujlwm ntawm lub tog raj kheej bores lossis xau-txoj kev sealing nto. Ntawm QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., grey hlau tsis yog khoom muag. Nws yog ib tug tswj metallurgical system. Lawv QT450-10 thiab GG25 castings undergo spectral tsom * ua ntej * pouring, nrog CE tuav nyob rau hauv ± 0.08 ntsiab lus nyob rau hauv batch. Txhua lub tshav kub muaj tag nrho traceability: yaj cav, ladle tooj, pwm kab noj hniav ID, thiab tom qab-kub-kho Brinell hardness pov thawj - tsis yog ib daim ntawv pov thawj stamped "ua raws."
Lawv lub zog nyob rau hauv kev sib koom ua ke ntsug - tsis yog ib lo lus buzz, tab sis raws li txheej txheem kev qhuab qhia. Lub piston twj tso kua mis lub tog raj kheej lub tsev nyob pib raws li cov xuab zeb-cam khwb cia GG25 dawb paug, ces txav ncaj qha mus rau lawv ISO 9001-certified CNC pem teb tsis muaj inter-chaw thauj mus los. Tsis muaj re-clamping surprises. Tsis muaj kev sib koom ua ke misalignment ntawm casting datum thiab machining fixture. Lawv tshuab lub ntsej muag tseem ceeb hauv kev teeb tsa, siv Renishaw-probed tool offsets los them rau cov hardness gradients hauv zos. Qhov ntawd yog li cas lawv xa 0.4 µm Ra tiav ntawm lub rooj zaum hauv av-tsis muaj kev sib tw thib ob-thiab tuav 0.02 hli concentricity ntawm bore thiab mounting flange hla 120 mm ntev. Cov neeg siv khoom hauv North America tau tshaj tawm 30% tsawg dua qhov xau ntawm cov twj tso kua mis hloov pauv piv rau cov neeg xa khoom ua ntej -vim tias cov khoom siv hluav taws xob tsis tau yuam kev ua haujlwm hnyav uas ua rau muaj qhov porosity.
Tab sis kev koom ua ke txhais tau tias me ntsis yam tsis muaj qhov tob tob hauv kev coj tus cwj pwm alloy. Grey hlau tsis cais ntawm no - nws yog engineered nrog cobalt-nickel systems. Thaum tus neeg siv khoom xav tau kev sib koom ua ke - hais, GG25 twj tso kua mis lub hauv paus nrog AMS 5387 cobalt alloy valve inserts - tib pab neeg ua haujlwm ob leeg. Lawv paub T800 lub thermal expansion coefficient yog 37% qis dua grey hlau, yog li lawv tsim kev cuam tshuam haum thiab annealing cycles uas tiv thaiv interfacial tawg thaum lub sij hawm kev pab cuam ntawm 220 ° C. Qhov sib txawv ntawm cov khoom siv no yog qhov tseem ceeb: nws tiv thaiv kev tsim kho dua tshiab thaum thermal mismatch ua rau ntxov ntxov gasket tsis ua hauj lwm los yog fretting hnav ntawm junctions. Peb tau saib lawv kho graphite morphology ntawm inoculant lub sij hawm los txhim kho damping nyob rau hauv winch center ncej chais-txo kev co kis tau tus mob los ntawm 42% nyob rau hauv teb kev xeem ntawm engineering tsheb tsav tsheb.
Dab tsi cais lawv los ntawm cov neeg muag khoom catalog? Teb lub sij hawm ntawm manufacturability tawm tswv yim. Xa GD&T-hnyav daim duab rau lub siab valve lub cev, thiab koj yuav tau txais cov lus piav qhia PDFs hauv 48 teev - tsis yog cov ntawv sau dav dav xws li "nruj siab ua tau," tab sis cov lus hais tshwj xeeb: "Datum C yuav tsum hloov 0.3 hli mus rau bore axis kom tsis txhob sib tsoo log cuam tshuam," los yog "Specifying Rz retentions." Lawv cov txheej txheem zoo tsis yog daim ntawv teev npe-tsav; nws yog kev pheej hmoo-mapped. Cov khoom siv raw tau txais kev tsom xam emissions * thiab * kuaj ultrasonic rau sab hauv shrinkage. Kev kuaj xyuas hauv kev siv Zeiss CMMs nrog calibrated ceramic styli - tsis yog txhuas rods - yog li thermal drift tsis skew tshwm sim ntawm 20 ° C ambient. Kev tshuaj xyuas zaum kawg suav nrog kev ntsuas kev ua haujlwm siab ntawm 1.5 × kev ua haujlwm siab, nrog rau kev txheeb xyuas qhov tseeb ntawm tag nrho cov tshuab fillets.
Yog tias koj qhov kev txiav txim siab grey tom ntej no xav tau ntau dua "nws haum thiab tsis tawg," nrhiav pov thawj ntawm kev tswj cov txheej txheem - tsis yog ua raws li. Saib rau cov khw muag khoom uas cov kws tshuaj ntsuam xyuas cov xuab zeb faib cov ntawv tshaj tawm ua ntej pwm ua, qhov twg CNC programmers kho cov nqi noj raws li lub sij hawm tiag tiag hardness daim ntawv qhia ntawm txhua qhov casting, thiab qhov chaw xa khoom hnub yog anched rau lub cub tawg cav-tsis yog cov lus cog tseg. Qhov ntawd yog qhov kev ua haujlwm muaj tseeb tom qab txhim khu kev qha precision qhov chaw. Rau kev thov kev siv hauv hydraulics, roj & roj, lossis lub tsheb hnyav, qhov sib xws tsis yog xaiv tau. Nws yog qhov sib txawv ntawm kev teem sijhawm tu thiab lub sijhawm tsis tau npaj tseg.
