Xaiv txoj cai hlau nrum txheej txheem tsis yog hais txog xaiv lub npe tawm ntawm daim ntawv teev npe. Nws yog hais txog kev sib piv physics, geometry, thiab kev ua haujlwm - ua ntej thawj pwm yog nchuav. Ntawm QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., peb tau nrum ntau tshaj 12,000 qhov tshwj xeeb rau hydraulic li qub, twj tso kua mis vaj tse, thiab offshore winch shafts. Txhua qhov ua tsis tiav tau qhia peb ib yam dab tsi: xuab zeb casting yuav tsis tuav ± 0.05 hli ntawm lub rooj zaum cobalt-alloy nozzle; peev casting tawg yog tias koj hla preheat ntawm AMS 5387; thiab centrifugal casting tsis muaj kev puas tsuaj thaum phab ntsa thickness poob qis dua 18 hli ntawm lub tog raj kheej lub tog raj kheej siab.
Pib nrog ib feem - tsis yog txheej txheem
Feem ntau cov engineers pib los ntawm kev nug "Yuav ua li cas cam khwb cia hlau yog qhov zoo tshaj plaws?" Lo lus nug no ua rau ncaj qha mus rau qhov tsis txaus ntseeg lossis ua tsis tau zoo. Xwb, nug peb yam: Nws yuav nqa dab tsi? Qhov twg tsis ua haujlwm hauv kev pabcuam? Dab tsi dimension tolerances yuav tsum ciaj sia zaum kawg machining?
Peb ib zaug tau txais ib daim duab rau T800 cobalt alloy piston twj tso kua mis tsev nyob - npaj rau 350 bar ua haujlwm. Cov neeg siv khoom tau teev cov xuab zeb casting. Tab sis tom qab thermal stress modeling thiab microstructure xyuas, peb pom zoo peev casting nrog tswj solidification. Vim li cas? Xuab zeb casting tsim cov qauv tsis sib xws nyob ze ntawm qhov chaw nres nkoj valve. Ob chav kuaj tau tawg ntawm 280 bar thaum kuaj tawg. Kev nqis peev casting xa cov khoom sib txawv ntawm caj npab sib nrug, dhau 420 bar validation, thiab txo cov khoom seem tom qab siv los ntawm 37% mus rau 9%.
Lub takeaway: Geometry tsav cov txheej txheem xaiv. Nyias-walled, complex contours nrog nruj GD&T hu rau peev casting. Heavy-section structural bases? Xuab zeb casting muab kev tswj tus nqi zoo dua thiab thermal stability. Rotational symmetry nrog niaj hnub phab ntsa thickness? Centrifugal casting muab superior ceev thiab qaug zog lub neej-tshwj xeeb tshaj yog rau stainless hlau twj tso kua mis foundations raug dej ntsev yaig.
Cov ntaub ntawv txhais koj lub qab nthab-thiab koj cov kev txwv
Koj tsis tuaj yeem pov yam koj tsis tuaj yeem noj. Cobalt-nickel alloys xws li AMS 5387 thiab T800 muaj cov ntsiab lus melting siab (1370-1420 ° C), tsis muaj dej tsis txaus, thiab tsis tshua muaj siab rau pwm kub gradients. Peb tau pom cov khw sim yuam lawv mus rau hauv cov pwm ntsuab-xuab zeb-tsuas yog kom tau txias kaw, ntsws porosity, thiab interdendritic cracking. Cov no tsis yog "kev ua tsis tiav." Lawv yog cov khoom-txheej txheem tsis sib haum.
Peb lub chaw khiav ob txoj kab sib dhos: ib qho ua kom zoo rau cov hlau thiab cov hlau (xuab zeb casting, txog li 500 kg), lwm qhov siab rau high-alloy superalloys (kev nqis peev casting, nqus-pab ncuav, preheated ceramic shells). Rau AMS 5387 nozzles, peb siv silica-raws li lub plhaub tshuab preheated rau 1050 ° C - tsis yog 800 ° C - kom tsis txhob thermal poob siab thiab ua kom tiav pwm puv. Ib qho kev hloov pauv ntawd tau txiav cov oxide suav nrog 63% hauv peb 18 lub hlis dhau los.
Tsis txhob xav tias "stainless steel" txhais tau tias ib yam. 316 stainless behaves txawv ntau dua li 17-4PH lossis F22. Thiab cobalt alloys xav tau kev sib txawv ntawm qhov sib txawv, nce, thiab cov tswv yim txias dua li cov nickel-based Inconels. Yog tias koj tus neeg muag khoom tsis nug txog koj daim ntawv qhia txog metallurgical tag nrho - suav nrog keeb kwm kev kho cua sov thiab qhov xav tau tensile / cuam tshuam qhov tseem ceeb - koj twb dhau lawm.
Kev sib koom ua ke sib cais-txhua lub sijhawm
Qhov zoo tshaj plaws casting yog tsis muaj txiaj ntsig yog tias nws tsis tuaj yeem ua tshuab luam ntawv. Peb pom qhov no txhua hnub: tus neeg siv khoom xaj cov xuab zeb-cam khwb cia hlau, tom qab ntawd xav tau ± 0.025 hli flatness hla 600 × 400 hli nto. Ua tsis tau yam tsis muaj kev ntxhov siab thiab kev kho kom raug. Los yog kev nqis peev-cam khwb cia cobalt ntsaws tuaj txog nrog 0.3 hli flash ntawm txoj kab sib faib - tom qab ntawd tau txais kev tsis lees paub vim tias lub khw CNC tsis muaj cov cuab yeej tho txawv rau 3.2 hli hauv xov.
Yog vim li cas QINGDAO QIANGSENYUAN TECHNOLOGY integrates casting, kho cua sov, multi-axis machining, thiab CMM tshuaj xyuas nyob rau hauv ib lub ru tsev ISO. Thaum peb hais txog lub siab lub cev lub cev, peb simulate tag nrho cov haujlwm ua haujlwm: casting shrinkage them nyiaj, kev ntxhov siab-txhim kho lub sij hawm, fixture tsim rau nyias-phab ntsa clamping, thiab kho qhov muag ntsuas ntawm qhov tseem ceeb sealing nto. Peb tsis muab cov khoom xa tawm - peb muab cov khoom pov thawj ua haujlwm.
Qhov kev sib koom ua ke no txo cov sij hawm txhuas los ntawm 31% ntawm qhov kev txiav txim nruab nrab-ntim thiab tshem tawm 94% ntawm qhov seem rov ua haujlwm. Qhov tseem ceeb tshaj, nws cia peb daws cov teeb meem ua ntej lawv tshwm sim-xws li kho qhov rooj kom txo qis kev ntxhov siab nyob rau hauv lub winch center ncej cov menyuam kom qhov kawg sib tsoo ua tiav Ra 0.4 µm yam tsis muaj kev sib tham.
Nug cov lus nug uas yog - ua ntej koj cog lus
Ua ntej xaiv a hlau nrum tus khub, txheeb xyuas tsib lub ntsiab lus no:
- Lawv puas lees paub lawv cov txheej txheem casting-tsis yog kuaj xyuas qhov tshwm sim? Nug rau cov ntaub ntawv qhia txog kev simulation thiab thermal gradient cav rau ib qho.
- Lawv puas tuaj yeem taug qab txhua pawg rau cov ntaub ntawv pov thawj raw khoom - suav nrog cov ntawv ceeb toom zeb kuaj thiab kev tshuaj xyuas spectrographic? Tsis muaj kev zam rau cobalt lossis nickel alloys.
- Lawv puas ua cov txheej txheem CMM kuaj ntawm cov qauv ntsuab lossis cov qauv siv quav ciab - tsis yog qhov kawg nkaus xwb? Tseem ceeb heev rau GD & T-hnyav sib dhos zoo li lub tog raj kheej twj tso kua mis.
- Lawv cov txiaj ntsig pov thawj ntawm koj qhov tshwj xeeb alloy thiab geometry yog dab tsi? Tsis yog "kev lag luam nruab nrab" - koj li.
- Lawv puas koom nrog kev tshuaj xyuas kev tsim khoom thaum lub sij hawm tsim tawm engineering - tsis yog tom qab pib cov cuab yeej? Peb chij muaj kev pheej hmoo zoo li undercuts uas ntxiab ceramic plhaub cov ntaub ntawv los yog radii me me rau cov tub ntxhais pins.
Tsis muaj universal "zoo tshaj" hlau cam txoj kev. Tsuas muaj qhov sib tw - rau koj cov ntaub ntawv thauj khoom, koj cov khoom siv, koj qhov kev kam rau siab, thiab koj lub qhov rais xa khoom tiag tiag. Ntawm QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD., peb kho txhua qhov casting raws li qhov system-tsis yog ib feem. Vim hais tias nyob rau hauv hydraulic systems, roj & roj cov cuab yeej, thiab engineering tsheb tsav tsheb, ib qho porosity pawg tsis yog ib qho kev ua kom zoo nkauj. Nws yog txoj kev xau. Ib tug qaug zog keeb kwm. Lub teb tsis ua hauj lwm tos kom tshwm sim.
Xaiv cov txheej txheem uas hwm koj lub hom phiaj - tsis yog nws cov duab xwb.
