Txhua tus engineer foundry paub qhov no: kev ua tiav casting pib ntev ua ntej lub ncuav. Nws pib nrog txoj cai cov khoom siv hlau casting- tsis yog cov khoom siv raw xwb, tab sis cov khoom siv hluav taws xob zoo, cov hlua khi, cov pwm txheej, cov xuab zeb tseem ceeb, thiab cov khoom siv rooj tog uas tswj cov cua sov, qhov chaw tiav, thiab qhov rov ua dua. Peb tau pom ntau yam khoom muaj txiaj ntsig zoo ua tsis tau - tsis yog los ntawm kev tsim tsis zoo lossis kev xaiv alloy, tab sis los ntawm kev faib cov xuab zeb tsis sib haum, cov khoom siv qub qub qub qub, lossis txheej txheej uas flakes hauv thermal shock. Ntawm QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., qhov twg peb tsim AMS 5387 cobalt alloy twj tso kua mis thiab T800-raws li nozzles rau hydraulic systems ua hauj lwm ntawm 420 bar, kev ntseeg siab tsis yog aspirational. Nws tau tsim nyob rau hauv txhua qhov kev txiav txim siab muab khoom.
Cov khoom siv hluav taws xob uas tiv taus qhov kub siab tiag tiag hauv ntiaj teb
Tsis yog tag nrho cov refractories coj zoo ib yam nyob rau hauv rov qab thermal cycling. Silica xuab zeb ua haujlwm rau cov hlau tsis tshua muaj hlau-tab sis ua tsis tau zoo nrog cobalt-nickel alloys siab tshaj 1,400 ° C. Nyob rau hauv peb ISO-raws li foundry, peb siv fused alumina thiab zircon blends rau peev plhaub pwm casting AMS 5387 qhov chaw. Vim li cas? Vim tias zircon tus coefficient ntawm thermal expansion sib tw nrog cobalt alloys ze-txo lub plhaub tawg thaum dewaxing thiab preheat. Silica-based coatings blister nyob rau hauv cov cua kub ceev; zircon-raws li cov neeg tuav kev ncaj ncees. Peb kuaj txhua batch rau particle loj faib (D50 ≤ 45 µm) thiab cov ntsiab lus noo noo (<0.3%) ua ntej plhaub dipping. Ib tus neeg siv khoom tau hloov pauv cov khoom lag luam yam tsis tau hloov kho tus nqi preheat ramp - thiab pom 22% plhaub spalling hauv thawj cov khoom siv. Kev kho tsis yog cov cuab yeej tshiab. Nws tau txuam tus cwj pwm refractory rau lawv qhov profile tiag tiag.
Binders thiab Core Systems uas xa qhov kev ruaj ntseg
Core hloov ruins piston twj tso kua mis lub tog raj kheej Housing. Qhov sib txawv ntawm 0.15 hli nyob rau hauv qhov chaw bore txhais tau tias ua haujlwm tsis ua haujlwm. Peb siv lub thawv txias phenolic urethane binders - tsis yog rau nqi, tab sis rau ntsuab lub zog tuav ntawm 35-40% txheeb ze av noo thiab ua tau zoo sib xws shakeout. Peb cov ntaub ntawv qhia tau hais tias cores ua nrog cov binders tuav ± 0.08 hli txoj hauj lwm kam rau ua hla 500-unit ntau lawm khiav. Qee lub khw tseem cia siab rau furan tsis muaj ci tshuab, tab sis lawv cov sulfur residue txhawb micro-porosity hauv stainless hlau castings. Rau cov hlau castings xav tau Chav Kawm 30+ tensile lub zog, peb teev cov alkaline phenolic binders - qis-sulfur, high-ash-strength, thiab sib xws nrog automated core shooting kab. Tus yuam sij tsis yog hom binder ib leeg. Nws yog li cas binder kho kinetics ua ke nrog koj lub thawv tseem ceeb kub, ambient humidity, thiab demold lub sij hawm.
Pwm txheej thiab tso tawm cov neeg sawv cev uas tswj qhov kev ncaj ncees ntawm qhov chaw
Lub casting qhov chaw tsis zoo nkauj - nws ua haujlwm. Pump foundations xav tau Ra ≤ 3.2 µm rau gasket sealing; winch center shaft rollers xav tau qhov chaw tsis muaj qhov tsis xws luag kom tsis txhob hnav cov kabmob ntxov ntxov. Peb siv cov aqueous ethyl silicate-bonded zircon coatings ntawm airless spray-viscosity tswj ntawm 22-24 sec (Ford Cup #4), cov ntsiab lus ntawm 68-70%. Nyias dhau lawm? Tsis zoo erosion kuj. tuab heev? Cracking thiab khaws cov pa roj carbon. Peb xyuas cov txheej thickness nrog eddy-tam sim no gauges-lub hom phiaj: 0.25-0.35 hli qhuav zaj duab xis. Rau cov khoom tsis yog tus qauv T800 alloy, peb ntxiv 3-5% colloidal graphite los txhim kho cov hlau ntws mus rau hauv nyias ntu. Tsis muaj txheej txheej "universal" tawm ntawm lub txee muab qhov ntawd. Nws yog formulation, daim ntawv thov txoj kev, thiab tom qab qhuav lub sij hawm - sim ua ke, tsis nyob rau hauv kev sib cais.
Traceability-Ready Supplies for Mission-Critical Castings
Thaum lub siab valve tsis ua hauj lwm nyob rau hauv ib tug oilfield manifold, traceability tsis yog ntaub ntawv - nws yog lub luag hauj lwm mitigation. Txhua lub nruas ntawm zircon xuab zeb, txhua lub hnab ntim khoom, txhua pawg ntawm cov txheej slurry nkag mus rau peb lub chaw muaj ntau tus lej, tus neeg muag khoom daim ntawv pov thawj ntawm kev tshuaj xyuas, thiab daim ntawv tshaj tawm kev sim metallurgical. Peb khaws tag nrho traceability los ntawm raw cov ntaub ntawv tau txais los ntawm qhov kawg CMM tshuaj ntsuam - mus rau lub tshav kub tooj ntawm txhua cobalt alloy ingot siv nyob rau hauv AMS 5387 qhov chaw. Qhov ntawd txhais tau tias yog tias tus neeg siv khoom tshaj tawm qhov porosity ntawm 12 teev ntawm lub tog raj kheej lub tsev, peb tuaj yeem cais cov xuab zeb ntau, cov ntawv khi, thiab txheej txheej dip voj voog - thiab rov tsim cov xwm txheej hauv kev sim ncuav. Cov neeg muag khoom feem ntau xa cov ntaub ntawv pov thawj. Ob peb koom ua ke ntawv pov thawj rau hauv kev tswj cov txheej txheem ntawm lub sijhawm. Peb ua-vim qhov tseeb qhov tseeb thiab cov qauv kev ncaj ncees tsis ua tiav hauv lub qhov cub tawg ib leeg. Lawv raug kaw nyob rau hauv qhov chaw muab khoom.
Cov txiaj ntsig nrhiav kev ntseeg siab tsis yog los ntawm ib qho khoom zoo meej. Lawv tshwm sim los ntawm kev txiav txim siab, sim xaiv ntawm txhua tus cov khoom siv hlau casting yam khoom hauv koj qhov kev ua haujlwm-los ntawm qhov loj ntawm refractory grain los khi lub neej txee rau txheej viscosity. Ntawm QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., peb kho cov khoom siv casting tsis yog khoom siv, tab sis raws li cov neeg ua haujlwm siab. Qhov kev xav ntawd cais qhov kev ua tau zoo dua qub los ntawm kev ua haujlwm kim dua. Raws li hybrid casting-machining txheej txheem loj hlob ntau dua-tshwj xeeb tshaj yog rau high-alloy twj tso kua mis thiab valve systems-cov npoo rau mov-chain variability shrinks. Xaiv cov neeg xa khoom uas ntsuas, siv tau, thiab cov ntaub ntawv - tsis yog xa tawm xwb.
