Powder metallurgy khoom yog dab tsi?

Hmoov metallurgy khoom yog sintered qhov chaw tsim los ntawm cov hmoov metallurgy txoj kev nrog qee qhov tseeb qhov tseeb thiab tuaj yeem tiv taus tensile, compression, distortion thiab lwm yam loads lossis ua haujlwm nyob rau hauv kev sib txhuam thiab hnav, tseem hu ua sintered qhov chaw.

Methods: Cov tsim thiab tom qabsintered qhov chawtau nias nyob rau hauv ib tug uniaxial txhav tuag nyob rau hauv chav tsev kub.

Daim Ntawv Thov: Cov hmoov hlau metallurgy feem ntau yog siv hauv kev lag luam tsheb, thiab muaj kev siv zoo dua yav tom ntej.

Qhov zoo ntawm cov hmoov metallurgy qhov chaw

• Thaum cov khoom muaj cov duab tsis sib xws, protruding lossis pits, thiab ntau qhov tshwj xeeb zoo li lub qhov, hmoov metallurgy yog ib qho yooj yim los tsim, thiab tsis tas yuav muaj lossis tsuas yog me me ntawm kev txiav ntxiv. Nws muaj kev lag luam pom tseeb.

• Thaum siv cov txheej txheem hmoov metallurgy los tsim cov khoom siv kho tshuab, qhov kev siv cov khoom siv tuaj yeem ncav cuag ntau dua 99.5%.

• Vim hais tias cov txheej txheem ntawm cov hmoov hlau metallurgy yog tsim los ntawm cov pwm, qhov sib xws ntawm cov qauv, cov duab thiab qhov loj ntawm cov khoom yog qhov zoo heev, thiab muaj ntau qhov sib txawv ntawm txhua yam ntawm kev ua tshuab, nws yog ib qho nyuaj rau kev tswj kom zoo ib yam.

• Cov txheej txheem hmoov metallurgy tuaj yeem sib xyaw ua ke ntau qhov chaw rau hauv cov txheej txheem tsim khoom, uas tuaj yeem txuag tau tom qab ua tiav thiab cov nqi sib dhos.

• Cov khoom siv ntom ntom ntawm cov hmoov txheej yog tswj tau, muaj qee qhov kev sib txuas ntawm qhov pores, thiab feem ntau yog tsau nrog 5% -20% lubricating roj los muab qee qhov kev ua haujlwm ntawm tus kheej lubrication, yog li txhim kho qhov hnav tsis kam.

• Nyob rau hauv hmoov metallurgy ntau lawm, txhawm rau pab txhawb kev tshem tawm ntawm qhov chaw tuag tom qab kev tsim, qhov chaw ua haujlwm ntawm qhov tuag muaj qhov ua tiav siab, kom cov khoom muaj qhov ntsuas qhov ntsuas qhov kawg. Tsis tas li ntawd, hmoov hlau metallurgy cov khoom siv kuj tseem tuaj yeem ua electroplating, txheej, kev kho cua sov thiab lwm yam kev kho mob tom qab xws li cov khoom siv tshuab.

Qhov tsis zoo: Vim muaj qhov seem ntawm qhov pores, nws cov ductility thiab qhov cuam tshuam tus nqi qis dua li ntawm cov castings nrog tib cov tshuaj muaj pes tsawg leeg, yog li txwv nws daim ntawv thov ntau yam.

hmoov metallurgy qhov chaw

Hmoov hlau tsim phau ntawv qhia

Cov txheej txheem hmoov metallurgy tuaj yeem tsim cov khoom hauv ntau qhov ntau thiab tsawg thiab cov duab, thiab qhov siab tshaj plaws ntawm cov khoom uas tuaj yeem tsim tau nyob ntawm qhov muaj peev xwm xovxwm.

Qhov yooj yim tshaj plaws cov duab los ua los ntawm cov hmoov metallurgy txheej txheem yog ib qho nrog tib qhov loj me nyob rau hauv cov kev taw qhia nias. Qhov chaw nrog qhov nyob rau hauv cov kev taw qhia nias yog feem ntau tsim nrog mandrel. Keys thiab keyways nyob rau hauv cov kev taw qhia nias yog ib qho yooj yim mus nias, thiab cov duab nta xws li grooves, qhov, cones, concave ces kaum thiab threads ntawm lub kaum sab xis mus rau lub pressing kev taw qhia yuav tsis tau nias los ntawm cov hmoov metallurgy txheej txheem. Txawm li cas los xij, nrog cov qauv tsim ntau dua ntawm cov pwm tuaj yeem tsim cov duab ntau dua. Qhov ntawd tau ntxiv tus nqi.

Gears, ratchets thiab cams

Gears, ratchets thiab cams yog tshwj xeeb tshaj yog haum rau ntau lawm los ntawm cov hmoov metallurgy txheej txheem.

Qhov zoo ntawm hmoov metallurgy ntau lawm:

① Qhov tseeb qhov tseeb ntawm cov iav hauv cov khoom loj yog qhov sib xws.

② Vim tias lub koom haum cov khoom muaj ib qho porosity, nws pab cov iav kom zoo thiab tuaj yeem ua rau nws tus kheej lubricating.

③ hmoov metallurgy iav nrog lub qhov muag tsis pom tuaj yeem ua tau.

Cov iav thiab lwm yam khoom tuaj yeem ua ke los ntawm cov txheej txheem hmoov metallurgy.

⑤ tuaj yeem tsim ntau yam duab ntawm iav.

⑥ Kev tsim khoom yooj yim thiab tus nqi qis.

Hmoov metallurgy tolerances

Qhov loj ntawm qhov sib txawv ntawm cov hmoov hlau metallurgy feem ntau yog tshwm sim los ntawm kev hloov ntawm lub zog nias.

Nyob rau hauv kev saib ntawm tib lub siab nias, lub longitudinal elastic deflection ntawm lub punch tuag yog loj dua elastic expansion ntawm qhov tsis zoo tuag, yog li qhov ntev ntev nyob rau hauv lub pressing kev taw qhia yog loj dua li nyob rau hauv ntsug nias txoj kev.

Mechanical kev sib raug zoo:

△ lub punch / △ qhov tuag = 3L / D

D sawv cev rau qhov nruab nrab radial loj ntawm kab noj hniav ntawm tus qauv tsis zoo.

L sawv cev rau tag nrho qhov ntev ntawm cov punch tuag.

Yuav ua li cas kom txo qhov ntev kam rau ua?

Lub qhov ntev ntev ntawm qhov tuaj yeem txhim kho los ntawm kev ua tiav, uas yog muab cov sintered ib feem rau hauv qhov tsis zoo tuag thiab nias nws nrog tuag xuas nrig ntaus, uas yog, nias nws dua nyob rau hauv qhov kawg tuag. Lub hom phiaj tseem ceeb ntawm kev ua tiav yog los kho qhov tsis sib xws los ntawm sintering.

Tshuab dhosntawm hmoov metallurgy qhov chaw

Lub hom phiaj tseem ceeb ntawm kev siv cov hmoov metallurgy qhov chaw yog kom ua tiav kev txiav tsawg, tsis muaj kev txiav, txuag hluav taws xob, txuag cov khoom, txo cov nqi ntawm cov khoom. Hmoov metallurgy qhov chaw tsis yooj yim rau kev txiav raws li cov khoom siv hlau sib xws. Vim yog qhov sib cuam tshuam ntawm kev txiav txim los ntawm qhov pores hauv cov khoom siv, lub cuab yeej lub neej luv luv thiab qhov roughness ntawm qhov chaw tsis zoo.

Txheem rau kev txiav txim siab machinability ntawm hmoov metallurgy: txiav txim siab lub machinability los ntawm kev ntsuas tus naj npawb ntawm qhov uas tuaj yeem drilled. Tus nqi ntawm 1045 steel tau teev tseg yog 100, thiab kev ntsuas machinability tuaj yeem txiav txim siab los ntawm cov qauv hauv qab no

Machinability ntsuam xyuas = tus naj npawb ntawm qhov drilled nyob rau hauv sintering / tus naj npawb ntawm qhov drilled nyob rau hauv 1045 steel × 100

Mn, P, S thiab lwm yam additives yog ntxiv rau cov khoom los txhim kho lub machinability ntawm hmoov metallurgy qhov chaw. Cov khoom ntawm cov hmoov hlau metallurgy tuaj yeem txhim kho los ntawm kev xaiv cov cuab yeej carbide kom zoo thiab cov geometry ntawm cov cuab yeej.

Cov nyhuv ntawm cov khoom ntom ntom ntawm cov hmoov metallurgy qhov chaw

Nyob rau hauv kev tsim cov hmoov hlau metallurgy yam ntxwv qhov chaw, repressing thiab theem nrab sintering feem ntau yog siv los txhim kho cov khoom ntom ntom ntawm cov khoom, thiab cov txheej txheem yog tsim raws li cov khoom siv.cov txheej txheem ntawm nias - thawj sintering - repressing - theem nrab sintering.Cov khoom ntom ntom ntawm cov khoom tuaj yeem nce mus txog95%ntawm cov hlau zoo tib yam los ntawm kev rov nias, theem nrab sintering thiab sov nias.

Repressing zoo ib yam li kev ua tiav, qhov siab dua siv thaum lub sij hawm repressing tsuas yog ua kom tag nrho qhov ntom ntawm qhov, thiab theem nrab sintering yog hais txog rov sintering tom qab repressing. Lub zog thiab toughness ntawm cov yam ntxwv ntawm qhov chaw tuaj yeem txhim kho vim cov khoom siv siab ntom ntom ntawm cov txheej txheem tom qab rov nias thiab theem nrab sintering.

Hmoov Metallurgy txheej txheem

Tshuaj muaj pes tsawg leeg thiab mechanical zog

Cov hmoov hlau metallurgy qhov chaw uas tsim los ntawm cov txheej txheem kev nias thiab sintering yog ntxeem tau, thiab lawv cov khoom siv kho tshuab yog qis dua cov khoom siv hlau ntom ntom nrog tib cov tshuaj muaj pes tsawg leeg uas tsim los ntawm cov txheej txheem pa. Txhawm rau txhim kho cov khoom siv ntawm cov hmoov hlau metallurgy qhov chaw:

Tam sim no lubraw khoom hmoovnrog alloying ntsiab yog: hlau hmoov, tooj liab hmoov thiab graphite hmoov tov hmoov, hlau hmoov, npib tsib xee hmoov, graphite hmoov tov hmoov, hlau hmoov, phosphorus hlau hmoov tov hmoov, diffusion alloyed hmoov, rau alloyed hlau hmoov thiab stainless hlau hmoov.

Cov txheej txheem tsim khoom siv yog: nias - sintering, nias - pre-sintering - repressing - sintering, sov nias - sintering, kub nias, kub forging thiab thiaj li nyob.

Txoj kev loj hlob ntawm hmoov metallurgy qhov chaw

Txoj kev loj hlob ntawm cov ntaub ntawv no yog txo los yog tshem tawm cov seem seem nyob rau hauv cov khoom, thiab tsim cov hlau-raws li cov ntaub ntawv alloyed nrog chromium, manganese, titanium, silicon thiab lwm yam khoom los txhim kho cov neeg kho tshuab zog ntawm cov khoom thiab nthuav daim ntawv thov teb.

Jiehuangyog lub tuam txhab nto moo hmoov metallurgy khoom lag luam hauv Suav teb, Jiehuang cov khoom raug muag rau txhua lub teb chaws hauv ntiaj teb, tshwj xeeb tshaj yog rau Ltalis, Poland, Denmark, Tebchaws USA, UK thiab lwm lub tebchaws,thov xa koj cov duab kos, peb yuav teb koj tam sim ntawd!