QT400-18 Hoobkas cov chaw muag khoom tsis yog tsuas yog nkoj castings - lawv xa cov qauv kev ntseeg siab. Thaum koj hydraulic manifold yuav tsum tuav 350 bar, thaum koj lub winch center ncej tiv thaiv txhua hnub torsional poob siab nyob rau hauv Arctic offshore tej yam kev mob, los yog thaum lub twj tso kua mis vaj tse ntsib abrasive slurry ntawm 120 ° C, ductile hlau qib tsis yog ib tug footnote. Nws yog lub hauv paus. QT400-18 tsis yog generic grey hlau. Nws yog nruj tswj hwm, spheroidal graphite microstructure nrog lub zog tensile yam tsawg kawg nkaus ntawm 400 MPa thiab elongation ntawm 18% - ib qho tsis tshua muaj zog, ductility, thiab machinability uas ob peb foundries tsis tu ncua ua tiav nyob rau hauv batch ntau thiab tsawg los ntawm 5 mus rau 500 units.
Vim li cas QT400-18 tsis ua haujlwm - tsis nyob hauv chav kuaj, tab sis hauv khw hauv pem teb
Peb tau pom peb hom kev ua tsis tiav hauv ntiaj teb tiag QT400-18 daim ntawv thov: qhov tsis sib xws nodule suav hauv qab 120 / mm², ferrite / pearlite piv drifting dhau 85/15%, thiab qhov seem ntawm kev ntxhov siab vim kev ua tsov rog tom qab CNC tiav. Cov no tsis yog qhov kev pheej hmoo theoretical. Lawv tshwm sim thaum ntxov qaug zog tawg nyob rau hauv piston twj tso kua mis lub tog raj kheej vaj tse, raws li out-of-tolerance bores nyob rau hauv lub siab valve lub cev, los yog raws li nto micro-cracking thaum txhaj tshuaj peening. Lub hauv paus ua rau? Feem ntau "QT400-18" cov npe hauv online siv tsuas yog nominal chemistry - tsis yog qhov tseeb casting txheej txheem tswj. Kev ua raws cai tiag tiag xav tau kev tswj hwm nruj tshaj li lub sijhawm kho magnesium, qhov kub thiab txias, tus nqi cua txias hauv pwm, thiab cov voj voog kev ntxhov siab tom qab pov tseg. Ntawm peb lub chaw Qingdao, txhua QT400-18 tshav kub dhau los ntawm kev tsom xam spectral, nodule morphology pov thawj ntawm ASTM E2399, thiab kev ntsuas tensile ib ISO 6892-1-tsis yog ntawm cov ntawv xeem, tab sis ntawm tus neeg sawv cev daim coupon txiav los ntawm cov seem tuab ntawm cov casting.
Vertical kev koom ua ke daws qhov spec nplooj ntawv zais
Ntau tus neeg yuav khoom los ntawm QT400-18 castings los ntawm ib tus neeg muag khoom thiab ua tiav lawv ntawm lwm qhov. Qhov kev sib koom tes ua rau qhov muag tsis pom kev. Peb tshuab txhua QT400-18 nyob rau hauv-tsev-tam sim ntawd tom qab kev ntxhov siab, ua ntej seem drift pib. Peb tsib-axis CNC hlwb txiav ncaj qha los ntawm ntsuab xuab zeb castings siv carbide tooling optimized rau ferritic ductile hlau. Vim li cas qhov no tseem ceeb? Vim tias machining QT400-18 yam tsis suav nrog nws cov 12-15% graphite ntim feem ua rau muaj kev sib tham, ntug chipping, thiab subsurface micro-tearing. Peb kho tus nqi pub dawb los ntawm 18% qis dua li cov qauv hlau tsis zoo thiab siv cov khoom siv txias txias tso rau hauv 12 hli ntawm thaj tsam txiav. Qhov tshwm sim: nto roughness Ra ≤ 0.8 μm ntawm qhov tseem ceeb sealing nto, xoom rework ntawm bore concentricity rau hydraulic spool li qub.
Traceability tsis yog cov ntaub ntawv-nws yog physics
Thaum ib tus neeg siv khoom hauv lub tebchaws Yelemes tau tshaj tawm qhov kev xav tsis txaus ntseeg ntawm QT400-18 lub twj tso kua mis lub hauv paus, peb tau taug qab qhov teeb meem tsis yog rau qhov casting - tab sis mus rau machining coolant concentration poob qis dua 7.2% thaum lub sijhawm ua haujlwm hnub so. Tag nrho traceability txhais tau hais tias txuas txhua yam khoom siv rau nws cov khoom siv hluav taws xob, lub tshuab hluav taws xob lub sijhawm, kev ntxhov siab-txhim kho qhov nkhaus nkhaus, CMM tshuaj xyuas daim ntawv qhia, thiab txawm tias qhov tshwj xeeb coolant batch siv thaum ua tiav. Peb sau tag nrho cov no - tsis yog hauv Excel, tab sis hauv peb ISO 9001-certified MES, nrog cov kos npe digital ntawm txhua qhov chaw kuaj xyuas. Tsis muaj "raws li-tsim" drawings. Txhua qhov loj me raug txheeb xyuas tawm tsam GD&T callouts siv Zeiss CONTURA G2 CMMs calibrated rau NIST cov qauv. Yog tias koj daim duab qhia txog txoj haujlwm kam rau ua ntawm Ø0.05 hli ntawm tus qauv flange bolt, peb thawj tsab ntawv tshaj tawm qhia qhov txawv txav: Ø0.032 hli - ntsuas, ntawv pov thawj, archived.
Koj qhov project QT400-18 pib ua ntej kev txiav txim
Peb tsis muab cov lus qhia. Peb co-engineer kev daws teeb meem. Thaum koj xa tus qauv CAD ntawm lub siab-siab valve lub cev, peb metallurgists xyuas cov phab ntsa thickness hloov mus rau solidification kev pheej hmoo. Peb machinists chij undercuts xav tau kev cai tooling. Peb pab neeg ua haujlwm tau zoo tshaj tawm cov ntsiab lus tshuaj xyuas raws li ASME B16.34 cov cai - tsis yog qhov yooj yim ntsuas, tab sis qhov twg tsis ua haujlwm tiag tiag. Peb lub hlis dhau los, peb tau tsim kho dua tshiab rau tus neeg siv khoom QT400-18 winch nruas hub kom tshem tawm 22 hli fillet radius uas ua rau hauv zos shrink porosity. Kev hloov kho rooj vag txo cov seem ntawm 14% mus rau 2.3%. Tsis markup. Tsuas yog ua haujlwm ncaj ncees, xa.
Yog tias koj xav tau QT400-18 castings uas ua-tsis yog dhau kev soj ntsuam-hu rau QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. ncaj qha. Peb tsim QT400-18 qhov chaw rau hydraulic systems, engineering tsheb, roj thiab roj khoom, thiab tshwj xeeb twj tso kua mis sib dhos - raws li tag nrho cov txheej txheem tswj, tag nrho traceability, thiab tag nrho cov accountability. Mus saib https://www.tsingtaocnc.com los tshuaj xyuas peb cov lus qhia txog kev muaj peev xwm QT400-18 tam sim no, cov ntaub ntawv pov thawj, thiab daim ntawv qhia hnub muaj peev xwm.
