Thaum lub twj tso kua mis hydraulic tsis nyob rau hauv 350-bar siab, los yog cobalt alloy nozzle tawg tom qab 200 teev nyob rau hauv qaub roj kev pab cuam, lub hauv paus ua rau tsis tshua muaj tsim - nws yog precision. Tsis yog "nruj tolerances," tab sis qhov kev ruaj ntseg ntawm lub voj voog thermal, microstructural uniformity los ntawm cov ntu tuab, thiab kev ncaj ncees saum npoo uas tiv taus yaig thaum tswj kev sib khi geometry. Tias yog vim li cas engineers nrhiav lub hom phiaj tseem ceeb ntawm cov hlau tsis tau tshawb nrhiav "casting suppliers." Lawv nrhiav ib high precision casting Hoobkas-ib qho uas kho metallurgy, machining, thiab tshuaj xyuas raws li kev qhuab qhia tsis sib xws.
Yog vim li cas "High Precision" tsis yog ib lo lus lag luam xwb-Nws yog txoj kev ciam teb
Feem ntau cov foundries tswj casting shrinkage nyob rau hauv ± 1.5 hli ib 100 hli. Qhov tseeb siab precision casting Hoobkas tuav ± 0.15 hli ntawm qhov tseem ceeb datum nto-txawm tias ntawm 45-kg hlau castings nrog 12-mm phab ntsa variations. Yuav ua li cas? Los ntawm kev xauv cov txheej txheem ua ntej pouring: pwm compaction ntom ntsuas hauv kPa, binder kho profiles validated ib batch, thiab gating simulation pov thawj tiv thaiv lub sij hawm sau (tsis kwv yees). Peb tau pom cov neeg siv khoom tsis lees paub qhov tsis pom qhov porosity, tab sis vim tias CMM scans qhia 8-µm residual stress distortion tom qab kev kho cua sov - distortion tsis pom qhov muag lossis caliper, tseem txaus los hloov lub rooj zaum valve los ntawm 0.003 °. Qhov ntawd yog qhov uas qhov tseeb xaus thiab kev ntseeg tau pib.
Plaub Muaj Peev Xwm Uas Sib Cais High-Precision Casting los ntawm Standard Foundry Work
Lub siab precision casting Hoobkas tsis yog cam khwb cia. Nws muaj tag nrho cov saw-los ntawm kev xaiv alloy mus rau kev ua haujlwm validation. Nov yog qhov uas txhais tau tias hauv kev xyaum:
- Cobalt-nickel mastery - tsis yog tsuas yog tuav AMS 5387, tab sis kwv yees nws tus cwj pwm. T800 alloy tsis yog "nyuaj rau lub tshuab." Nws yog thermally tsis ruaj khov tshaj 650 ° C. Yog li peb preheat pwm rau 220 ° C ± 5 ° C, txias castings ntawm ≤1.2 ° C / min nyob rau hauv cov cua kub cua sov, thiab teem caij CNC roughing ua ntej kawg kev ntxhov siab nyem. Hla ib kauj ruam txaus ntshai microcracks uas tsuas tshwm sim thaum kuaj hydrostatic.
- Vertical kev koom ua ke uas tiv thaiv kev ua siab ntev stack-up. Thaum lub piston twj tso kua mis lub tog raj kheej vaj tse yuav tsum 0.01 hli cylindricity ntawm ib tug 280-mm bore * thiab * 0.05 hli txoj hauj lwm kam rau ua rau rau M12 threads txheeb ze rau qhov bore, outsourcing casting, machining, thiab tiav guarantees drift. Peb cam khwb cia, tshuab, kho cua sov, thiab ua kom tiav hauv ib qho chaw-siv tib lub CMM fixture rau kev tshuaj xyuas thiab kev tso tawm zaum kawg.
- GD&T-tsav kev tsim khoom-tsis yog kev txhais lus. Cov neeg siv khoom xa tuaj rau peb nrog ASME Y14.5-2018 callouts: "|POSITION|0.02|A|B|C|." Peb tsis nug "Qhov no txhais li cas?" Peb daim ntawv qhia txhua qhov chaw rau lub cev fixtures, simulate phem tshaj cov ntaub ntawv tshem tawm, thiab chij tsis sib haum * ua ntej * toolpath tiam. Ib tus neeg European tau txais kev cawmdim $ 210K hauv kev rov ua haujlwm los ntawm kev ntes cov ntaub ntawv B misalignment thaum peb tshuaj xyuas kev tsim khoom-peb lub lis piam ua ntej thawj cov hlau nchuav.
- Traceability uas pib nrog raw cov ntaub ntawv pov thawj - tsis yog batch tooj. Txhua lub tshav kub ntawm cobalt alloy tuaj txog nrog tag nrho spectrographic tsom xam, grain loj daim ntawv qhia, thiab tensile xeem cov ntaub ntawv. Peb nkag mus rau hauv peb qhov system, txuas nws mus rau qhov casting ntau, tom qab ntawd khi ntau ntau rau txhua tus lej machined. Yog tias lub hauv paus twj tso kua mis tsis ua haujlwm ntawm 15,000 teev ua haujlwm, peb rov tsim kho tag nrho cov keeb kwm: yaj hnub, ncuav kub, txias tus nqi, nyeem ntawv hardness, thiab txawm tus neeg teb xov tooj ID uas khiav qhov kawg CMM scan.
Tus nqi tiag tiag ntawm "Zoo txaus" Casting-Thiab yog vim li cas nws tsis pheej yig dua
Qee tus neeg yuav khoom sib piv cov nqe lus raws li tus nqi tsev ib leeg. Tab sis xav txog qhov no: $ 480 cobalt alloy plug nrum rau ± 0.5 hli tus nqi 37% tsawg dua pem hauv ntej dua ib qho rau ± 0.12 hli. Tsis tau qhov looser yuav tsum tau 2.3 ntxiv machining dhau, tsim 41% ntau cov cuab yeej hnav, thiab muaj 22% ntau dua cov seem thaum lub sij hawm xeem xau kawg. Tus nqi tsaws tag nrho? $612. Qhov phem tshaj, qhov kev ua tsis tiav ua rau muaj kev lav phib xaub rau qhov nruab nrab 4.7 × tus nqi ib feem - thiab kev puas tsuaj rau kev ntseeg siab uas tsis muaj luv nqi rov qab. Precision tsis yog ib qho ntxiv. Nws yog lub hauv paus rau kev ua tau zoo.
Xaiv Koj Lub Hoobkas High Precision Casting: Peb Qhov Kev Tshawb Fawb Tsis Tau
Ua ntej kos npe rau NDA, txheeb xyuas cov no - tsis yog hauv daim ntawv qhia, tab sis hauv khw hauv pem teb pov thawj:
- Nug rau CMM cov lus ceeb toom ntawm peb qhov tsis ntev los no ntau ntawm tib lub geometry. Saib rau qhov sib txawv ntawm tus qauv sib txawv - tsis yog "hauv spec." Kev sib kis ntawm ± 0.005 hli hla 20 qhov kev ntsuas qhia koj ntau tshaj ib zaug dhau los / tsis ua haujlwm.
- Thov ib tug ntoo khaub lig-section micrograph ntawm ib tug tiav casting. Cov qauv nplej yuav tsum tsis sib xws, dendrite caj npab sib nrug nruj thiab kev taw qhia - tsis yog random lossis cais. Porosity yuav tsum yog spherical thiab cais, tsis txhob cuam tshuam.
- Saib xyuas lawv GD&T workflow. Saib seb lawv teeb tsa qhov nyuaj ntawm CMM li cas. Lawv puas siv kinematic mounts? Lawv puas siv tau kev sojntsuam calibration * ua ntej * scanning? Yog tias lawv hla ib qho, koj qhov kam rau ua yog theoretical.
Kev ntseeg tsis tau tiav los ntawm kev nruj specs. Nws tau tsim los ntawm kev nkag siab tias cov hlau molten ntws li cas, cov alloys teb li cas rau cov thermal gradients, thiab ua li cas machining rog cuam tshuam nrog li-cast microstructure. QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. ua hauj lwm raws li ib tug high precision casting Hoobkas vim hais tias txhua qhov kev txiav txim siab - los ntawm cov xuab zeb grain loj rau spindle RPM - yog tsim los tshem tawm qhov sib txawv, tsis tswj nws. Lawv txoj haujlwm tshwm nyob rau hauv cov twj thawb dej hiav txwv ntawm 1,200 meters qhov tob, winch shafts lifting 42-tuj engineering tsheb Cheebtsam, thiab li qub tswj hydrogen ntws hauv xoom-emission refueling noj. Precision tsis yog lawv lub hom phiaj. Nws yog lawv cov qauv sau ntawv. Thiab nyob rau hauv high-stakes hlau qhov chaw, cov qauv sau ntawv txiav txim seb lub kaw lus puas-los yog ua tsis tau.
