Thaum koj xuas nrig ntaus '17 4 peev casting' rau hauv ib qho kev tshawb fawb bar, koj yuav nrhiav tau lub mos txwv khawv koob - ib feem uas muaj zog, corrosion-resistant, thiab complex, tag nrho ntawm tus nqi tsim nyog. Qhov tseeb, los ntawm kuv lub rooj zaum, yog messier. 17-4 PH stainless yog cov khoom siv zoo heev, tab sis kev sib koom ua ke nrog cov txheej txheem kev nqis peev casting tsis yog ib qho kev tawm dag zog xwb. Kuv tau pom ntau cov duab kos nyob qhov twg nws tau teev tseg los ntawm rote, tsis muaj kev sib tham tiag tiag txog kev kho cua sov (H900, H1025, thiab lwm yam) tom qab-casting, uas yog qhov tseem ceeb dictates cov khoom siv tshuab uas koj tau txais. Qhov ntawd yog qhov uas feem ntau disconnect pib.
Lub Allure thiab lub Caveat tam sim ntawd
Cov lus cog tseg yog undeniable. Kev nqis peev casting cia koj tsim cov intricate, ze-net-zoo geometry uas yuav ua npau suav phem rau tshuab los ntawm bar Tshuag, tshwj xeeb tshaj yog nyob rau hauv ib tug nyuaj cov ntaub ntawv xws li 17-4. Xav txog cov turbine hniav, cov khoom siv phais mob, lossis lub cev lub cev nrog cov lus sab hauv. Cov khib nyiab yog tsawg heev, uas yog qhov tseem ceeb rau cov khoom kim heev.
Tab sis ntawm no yog thawj lub tswv yim hiccup: fluidity. 17-4 nyob rau hauv nws lub xeev molten tsis ntws zoo li 304 los yog 316. Yog hais tias tus tsim muaj super nyias seem los yog yuav tsum tau sau cov ncauj lus kom ntxaws heev, sprawling pwm, tej zaum koj yuav khiav mus rau misruns los yog txias kaw. Peb kawm qhov no thaum ntxov nrog ib pawg ntawm cov sensors. Phab ntsa spec yog 1.2 hli, thiab peb muaj 50% seem tus nqi kom txog rau thaum peb rov tsim kho lub rooj vag kaw lus thiab nce qhov kub thiab txias - uas tom qab ntawd qhia txog nws tus kheej cov txheej txheem kev txhawj xeeb. Nws ib txwm yog qhov sib npaug.
Qhov no yog qhov chaw nrhiav kev paub dhau los ua tsis muaj kev sib tham. Lub khw uas tsuas yog nchuav cov pa roj carbon hlau yooj yim tuaj yeem ua rau poob siab nrog 17-4. Koj xav tau ib tus khub uas nkag siab txog kev siv hlau, tsis yog molding xwb. Kuv tau muaj kev sib tham zoo nrog pab pawg ntawm qhov chaw zoo li Qingdao Qiangsenyuan Technology Co., Ltd. (QSY). Lawv tsom mus ntev rau peev casting thiab tshwj xeeb alloys, raws li tau sau tseg ntawm lawv qhov chaw tsi.com, qhia tias lawv tau taug kev cov kev cov nyom tshwj xeeb ua ntej, uas yog ib nrab ntawm kev sib ntaus sib tua.
Tom qab Casting: Qhov twg PH tshwm sim tiag tiag
Qhov no yog qhov feem ntau saib tsis tau hauv RFQs. Koj tsis nti 17-4 PH. Koj nrum 17-4 stainless nyob rau hauv ib tug tov-annealed mob. Cov nag lossis daus tuaj tom qab. Raws li-cam khwb cia ib feem yog kuj mos thiab machinable. Tom qab ntawd koj kub kho nws mus rau H-qhov xwm txheej.
Qhov tseem ceeb tswj yog kub uniformity thiab cua. Yog tias koj tab tom tsom rau H900 rau lub zog siab tshaj plaws (nyob ib puag ncig 190 ksi tensile), qhov sib txawv ntawm 25 ° F hauv qhov cub tuaj yeem ua rau tsis sib haum xeeb ntawm kev ua haujlwm ntau lawm. Peb ib zaug muaj batch ntawm aerospace txuas qhov chaw uas ua tsis tau QC vim hais tias lub cub tawg thermocouple yog drifting; qhov chaw ntawm ib sab ntawm lub tais tau ntsib spec, lwm tus tsis. Nws yog ib zaj lus qhia kim heev hauv kev tsis xav tias tus kws kho cua sov tau ua tiav tag nrho.
Thiab machining tom qab hardening? Nws yog ua tau tab sis tawv. Yog tias koj xav tau kev tshem tawm cov hlau tseem ceeb, ua nws hauv lub xeev annealed tom qab nrum, ces harden. Txhua lub teeb tiav tom qab hardening yuav tsum tau cov cuab yeej ceramic lossis CBN, thiab koj tab tom saib cov cuab yeej hnav zoo li hawk. Tus qauv nqi hloov pauv ntau raws li qhov sib lawv liag.
Dimensional Drift Thaum tshav kub kub kho
Ib qho kev hloov maj mam uas tom cov neeg tsim qauv: nag lossis daus ua rau me ntsis, tab sis kev kwv yees, qhov hloov pauv. Nws tsis zoo li quenching carbon steel, tab sis nws nyob ntawd. Rau qhov loj ntawm 100mm, koj yuav pom qhov hloov 0.05mm txog 0.1mm. Yog tias koj tuav lub +/- 0.05mm kam rau ntawm qhov tseem ceeb, koj yuav tsum suav rau qhov no. Tam sim no peb ib txwm tsim kom muaj qhov shrinkage / loj hlob yam tshwj xeeb rau H-qhov xwm txheej rau hauv qhov tsim casting tuag rau cov yam ntxwv tseem ceeb. Tsis quav ntsej qhov no txhais tau hais tias xaus nrog cov khoom siv hauv spec tab sis qhov ntev ntawm qhov tshwj xeeb.
Tiag tiag-lub ntiaj teb tsis ua hauj lwm thiab kho
Kuv nco qab txog qhov project rau marine tivthaiv - lub twj tso kua mis tiv thaiv corrosion. Lub spec yog 17-4 PH H1150 rau kev sib xyaw ua ke ntawm lub zog thiab corrosion kuj. Cov castings saib zoo nkauj, dhau X-ray, tab sis ua tsis tau tejyam nyob rau hauv ntsev-txhaj tshuaj ntsuam deb tshaj li qhov xav tau.
Lub hauv paus ua rau? Intergranular corrosion kuj. Lub sijhawm ntev ntawm kev kho mob ntawm 1150 ° F, yog tias tsis tswj tau zoo, tuaj yeem ua rau chromium carbides los nag ntawm cov ciam teb, depleting chromium hauv zos. Qhov kev kho tsis yog hloov cov khoom siv, tab sis kho lub voj voog kho cua sov thiab ua kom muaj kev nrawm nrawm tom qab cov tshuaj anneal theem. Qhov no tsis yog cov ntaub ntawv kawm; nws yog hom txheej txheem nuance koj kawm los ntawm kev khiav ntau txhiab qhov chaw thiab pom dab tsi tawg thiab vim li cas.
Qhov no yog tus nqi ntawm tus neeg xa khoom uas sib koom ua ke casting thiab machining. Yog tias tib lub koom haum tswj hwm tag nrho cov txheej txheem ntawm cov pwm mus rau qhov ua tiav, zoo li QSY ua ke peev casting thiab CNC machining muab, kev daws teeb meem dhau los ua txheej txheem kaw. Koj tsis txhob cem tus caster, ces tus kho cua sov, ces tus machinist. Cov lus teb yog tam sim ntawd thiab ua tau.
Thaum Yuav Siv Nws, Thaum Yuav Taug Kev
Yog li, thaum twg '17 4 peev casting' ua rau kev nkag siab? Ua ntej, thaum complexity siab thiab machining nqi los ntawm cov khoom yuav txwv tsis pub. Thib ob, thaum koj xav tau kev sib xyaw ua ke ntawm kev sib xyaw ua ke ntawm kev tiv thaiv corrosion thiab siab zog hauv tib qhov. Thib peb, thaum koj muaj ntim los ua pov thawj rau cov khoom siv pwm ceramic.
Thaum twg koj yuav tsum rov xav dua? Rau cov duab yooj yim - ib qho yooj yim flange los yog ib tug ncaj bar. Tsuas yog tshuab nws. Rau cov ntawv thov uas xav tau qhov kawg corrosion kuj nyob rau hauv ib tug txo acid ib puag ncig, ib tug txawv stainless tej zaum yuav zoo dua. Thiab rau kev pabcuam kub-siab, nco ntsoov H tej yam kev mob poob lub zog siab tshaj li 600 ° F.
Nws tseem tsim nyog nug txog lwm cov alloys. Qee zaum, duplex stainless hlau peev cam khwb cia thiab machined yuav muab tus nqi zoo dua / kev ua tau zoo rau daim ntawv thov. Ib tug engineer foundry zoo yuav muaj qhov kev sib tham nrog koj, es tsis yog lees txais cov ntawv luam.
Tus Neeg Muag Khoom Toj Siab thiab Kev Pom Zoo
Lub khw yog dej nyab nrog cov foundries thov muaj peev xwm. Tus sib txawv yog nyob rau hauv kev sib tham. Thaum kuv saib tus neeg muag khoom keeb kwm yav dhau los, 30 xyoo hauv kev lag luam, raws li QSY tau hais, qhia tias lawv tau muaj huab cua ntau yam khoom thiab cov txheej txheem hloov pauv. Nws txhais tau tias lawv yuav pom 17-4 qhov haujlwm uas ua haujlwm thiab cov uas tsis ua haujlwm.
Lawv hais txog kev ua haujlwm nrog cobalt-based alloys thiab Nickel-raws li alloys yog tus neeg sawv cev zoo. Yog tias lawv tuaj yeem tswj cov dej ntws thiab cov txheej txheem tswj rau cov superalloys, 17-4 yog qhov zoo nyob rau hauv lawv lub log tsheb metallurgical. Qhov kev sib tw yog feem ntau nyob rau hauv qhov sib xws rau kev tsim khoom, tsis ua ib qho qauv zoo.
Thaum kawg, qhia '17 4 peev casting' yog qhov pib ntawm kev sib tham, tsis yog qhov kawg. Nws coj los ua ke cov khoom siv dag zog thiab cov txheej txheem ilv. Kev vam meej nyob rau hauv kev nkag siab qhov kev sib tshuam - qhov kev sib tw fluidity, kev tswj tsis tau kev kho cua sov, thiab qhov seem nuances. Tau txais qhov kev koom tes zoo nrog lub khw muag khoom zoo, thiab cov txheej txheem xa cov khoom uas yuav luag tsis tuaj yeem ua lwm txoj hauv kev. Tau nws tsis ncaj ncees lawm, thiab koj nyob nraum nrog kim heev, heev complex seem.
