Thaum engineers qhia a valve rooj Hoobkas, lawv tsis yog tsuas yog xaj ib feem - lawv tau ruaj ntseg qhov ruaj khov nyob rau hauv 350 bar, hnav tsis kam tom qab 10,000 cycles, thiab metallurgical zoo sib xws thoob plaws 500 units. Peb tau pom ntau qhov chaw nres tsheb vim tias lub rooj zaum tsis sib haum thaum caij tsheb kauj vab, lossis micro-porosity ua rau ntxov ntxov hauv hydraulic manifolds. Tias yog vim li cas precision tsis yog kev lag luam thov - nws yog qhov yuav tsum tau nkag tsawg kawg nkaus.
Vim li cas "Valve Seat Factory" yog ib lo lus tshawb nrhiav yuam kev-Thiab qhov koj xav tau tiag tiag
Feem ntau cov neeg yuav khoom ntaus "valve seat factory" rau hauv Google xav tias yuav tsim ntau lawm. Tab sis nyob rau hauv kev xyaum, kev vam meej hinges ntawm peb lub peev xwm tsis sib tham: cov khoom siv tswv yim, geometric fidelity, thiab cov txheej txheem traceability. Tus khub tiag tiag yuav tsum tuav AMS 5387 cobalt alloy-tsis yog tshuab nws xwb, tab sis pov nws nrog kev tswj dendritic qhov sib nrug, tom qab ntawd ua tiav-dhau lub sealing nto rau ± 0.005 hli TIR thaum khaws cia compressive residual stress. Peb tau xa ntau tshaj 12,000 lub rooj zaum rau cov twj piston siab txij li xyoo 2019. Txhua batch nqa tag nrho cov cua sov ntau traceability, CMM qhia txog qhov tseem ceeb ntawm txoj kab uas hla, thiab kev txheeb xyuas qhov roughness ntawm Ra ≤ 0.4 µm ntawm lub ntsej muag sealing.
Plaub qhov tseeb tiag Cov neeg muab khoom siv feem ntau yuav tsis nthuav tawm
Ua ntej, cobalt-nickel alloys xav tau kev koom ua ke casting-machining workflows. Sand-cast seats feem ntau xav tau 40% cov khoom tshem tawm - ntau dhau rau cov txheej txheem toolpaths. Peb siv cov kev cai carbide inserts nrog PVD TiAlN coatings thiab adaptive feed tus nqi uas poob ntawm 120 mm / min mus rau 35 mm / min thaum hla lub tshav kub-cuam tshuam cheeb tsam ze ntawm lub rooj zaum lub ntsej muag.
Qhov thib ob, GD&T txhais lus ncaj qha cuam tshuam rau kev ua haujlwm. Ib lub rooj uas tau teev tseg nrog Ø0.015 hli txoj hauj lwm kam rau ua piv rau tus tsav bore? Qhov ntawd yuav tsum tau nyob rau hauv cov txheej txheem kho qhov muag - tsis yog kev tshuaj xyuas tom qab ua tiav. Peb txheeb xyuas qhov kev sib raug zoo ntawm datum ua ntej kev kho cua sov zaum kawg, tsis yog tom qab.
Thib peb, qhov kev ncaj ncees saum npoo trumps roughness ib leeg. Peb ntsuas micro-hardness gradients thoob plaws lub rooj zaum lub ntsej muag (HV300–HV420) thiab ua cov tshuaj fluorescent penetrant rau txhua qhov ntau - tsis yog cov qauv xwb - txhawm rau txhawm rau txhawm rau txhawm rau pom qhov tsis sib xws ntawm CMM.
Plaub, cov ntaub ntawv pov thawj cov ntaub ntawv tsis muaj nuj nqis yam tsis muaj kev koom tes nrog cov neeg siv khoom. Peb koom tes tsim cov khoom siv raw cov ntaub ntawv nrog peb cov khoom siv cobalt alloy hauv lub teb chaws Yelemees, yuam ASTM E112 lis loj tshaj tawm thiab txheeb xyuas qhov sib txawv ntawm qhov corrosion ntawm ASTM G28A.
Dab tsi Teem Lub Precision Valve Rooj Chaw tsim khoom sib nrug
Nws tsis yog hais txog tus kheej cov tshuab CNC. Nws yog hais txog kev tswj qhov tshwm sim ntawm lawv:
- Casting tswj: Kev nqis peev casting rau cov geometry nyuaj (piv txwv li, kev sib xyaw ua ke cua txias fins), xuab zeb casting rau lub rooj zaum loj-ob qho tib si nrog lub sijhawm saib xyuas thermal thaum lub sij hawm solidification
- Machining kev qhuab qhia: Multi-axis xov ntawm conical sealing nto siv cov lus teb nrog ± 1 arc-thib ob repeatability, tsis yog 3-axis milling
- Kev kho cua sov kev sib xyaw: Kev ntxhov siab-relieving ntawm 950 ° C nrog argon backfill, ua raws li kev tswj kom txias ntawm 15 ° C / teev los tiv thaiv sigma theem tsim hauv cobalt alloys
- Kev ua tiav tiav: Surface topography mapping ntawm dawb-lub teeb interferometry-tsis yog profileometer dhau-kom paub meej tias qhov chaw sib piv (Abbott nkhaus) ua tau raws li hydraulic foob
Peb tsis lees txais 6.2% ntawm cov khoom siv cobalt alloy tuaj raws li kev kuaj ultrasonic ib leeg. Qhov ntawd tsis pov tseg - uas tiv thaiv kev ua tsis tiav.
Xaiv Koj Lub Rooj Sib Tham Lub Rooj Sib Tham: Peb Qhov Kev Ntsuam Xyuas
Ua ntej kos npe rau NDA, nug rau cov no - tom qab ntawd txheeb xyuas:
- Thov peb tsab ntawv ceeb toom CMM kawg rau lub rooj zaum zoo sib xws. Sib piv qhov tseeb vs. nominal ntawm lub ntsej muag sealing, pilot diameter, thiab backface perpendicularity. Yog tias lawv tsuas qhia cov ntsiab lus, taug kev mus.
- Nug lawv cov ntaub ntawv xeem cov ntaub ntawv (MTR) qauv. Qhov tseeb traceability txhais tau hais tias txhua qhov kub ntau txuas rau tshuaj ntsuam xyuas, tensile cov txiaj ntsig, thiab cov duab microstructure - tsis yog ib daim ntawv pov thawj xwb.
- Saib xyuas lawv cov lus hais txog kev muaj peev xwm GD&T. Lawv puas validate composite txoj hauj lwm kam rau ua? Lawv puas tuaj yeem tuav qhov profile ntawm qhov chaw tsis pub dhau 0.008 hli hla 120 ° arc? Yog tias lawv cov lus teb suav nrog "peb yuav sim," lawv tsis tau ua ua ntej.
QINGDAO QIANGSENYUAN TECHNOLOGY CO., LTD. ua haujlwm li no txhua hnub - tsis yog kev zam, tab sis raws li tus txheej txheem txheej txheem. Lawv qhov chaw ISO-raws li hauv Qingdao ua haujlwm txhua yam los ntawm AMS 5387 cobalt alloy nozzles rau stainless hlau twj tso kua mis, nrog rau tag nrho cov ntaub ntawv los ntawm raw cov ntaub ntawv tau txais los ntawm qhov kawg functional siab xeem.
Kev xav zaum kawg: Kev txiav txim siab raug ntsuas hauv kev zam tsis tau
Lub rooj zaum valve uas xau ntawm 200 bar tsis raug nqi $ 87 hauv seem. Nws raug nqi $12,000 nyob rau hauv downtime rau ib tug offshore drilling rig. Nws raug nqi $ 220,000 nyob rau hauv warranty thov rau lub nkoj ntawm engineering tsheb. Nws raug nqi lub koob npe nrov-thaum koj tus neeg siv khoom kawg liam rau * koj lub npe rau qhov ua tsis tiav.
Txoj cai valve rooj Hoobkas tshem tawm cov kev hloov pauv ua ntej thawj nti yoov. Lawv tsis tsuas yog ua tau raws li qhov tshwj xeeb - lawv cia siab tias yuav ua li cas thermal expansion, kua rauj, thiab kev thauj khoom cyclic yuav cuam tshuam nrog lawv cov geometry thiab microstructure. Qhov ntawd tsis yog kev tsim khoom. Qhov ntawd yog kev pheej hmoo hloov pauv - ua tiav.
