Upfu Metallurgy
Chii chinonzi Powder metallurgy zvigadzirwa?
Upfu metallurgy zvigadzirwa zvikamu zvakasimwa zvinogadzirwa nehupfu metallurgy nzira ine humwe hunhu hwakajeka uye inogona kumira kusimba, kudzvanya, kukanganisa uye mamwe mitoro kana kushanda pasi pekukakavadzana uye kupfeka mamiriro, anozivikanwawo sezvikamu zvakasimwa.
Nzira: Iyo yakagadzirwa uye yakateveraSintered partsvakatsikirirwa mune uniaxial rigid die pakamuri tembiricha.
Kushandisa: Powder metallurgy zvikamu zvinonyanya kushandiswa muindasitiri yemotokari, uye zvine maapplication ari nani mune ramangwana.
Zvakanakira upfu metallurgy zvikamu
- Kana zvikamu zvacho zviine maumbirwo asina kurongeka, akabudikira kana makomba, nemakomba akasiyana-siyana akasarudzika, poda metallurgy iri nyore kugadzira, uye hapana chinodiwa kana chidimbu chekuwedzera chekucheka. Iine hupfumi huri pachena.
- Paunenge uchishandisa poda metallurgy process kugadzira mekiniki zvikamu, huwandu hwekushandisa kwezvinhu hunogona kusvika kupfuura 99.5%.
- Nemhaka yokuti zvikamu zvepoda metallurgy process inogadzirwa ne molds, kuwirirana kwechinyorwa, chimiro uye hukuru hwezvikamu zvakanaka kwazvo, uye kune zvakawanda zvakasiyana-siyana muzvinhu zvose zvekugadzira michina, zvakaoma kuchengetedza kuwirirana.
- Iyo poda metallurgy process inogona kubatanidza zvikamu zvakati wandei mukugadzira maitiro, ayo anogona kuchengetedza gare gare kugadzirisa uye mutengo wegungano.
- Hunhu hwehupfu hwehupfu hwehupfu hunodzoreka, hune humwe huwandu hwemapores akabatana, uye hunowanzo kunyudzwa ne5% -20% mafuta ekuzora kuti ipe imwe dhigirii yekuzvizora, nekudaro ichivandudza kupfeka kuramba.
- Mukugadzirwa kwepoda metallurgy, kuitira kuti kufambisa kubviswa kwezvikamu kubva mukufa mushure mekugadzira, nzvimbo yekushanda yefa ine kupera kwepamusoro, kuitira kuti zvikamu zvive nekupedzisa modulation. Uye zvakare, poda metallurgy zvimiro zvikamu zvinogona zvakare kuve electroplating, coating, kupisa kurapwa uye kumwe kunotevera kurapwa senge mekiniki zvikamu.
Zvakaipa: Nekuda kwekuvapo kwemapores asara, ductility uye kukosha kwayo kwakadzikira pane iyo yekukanda ine makemikari akafanana, nekudaro ichidzikamisa mashandisirwo ayo.
upfu metallurgy zvikamu
Powder metal design guide
Iyo poda metallurgy process inogona kuburitsa zvikamu muhukuru hwakasiyana-siyana uye maumbirwo, uye hukuru hwehukuru hwezvikamu zvinogona kugadzirwa zvinoenderana neiyo iripo yekutsikirira simba.
Iyo yakareruka chikamu chimiro kugadzira nehupfu metallurgy process ndiyo ine saizi yakafanana mukutsikirira nzira. Zvikamu zvine maburi munzira yekutsikirira zvinowanzoumbwa ne mandrel. Makiyi uye makiyi nzira dziri munzira yekutsikirira zviri nyore kudzvanya, uye maumbirwo maficha akadai semagrooves, maburi, makoni, concave angles uye tambo paAngle kune yekutsikirira nzira haigone kudzvanywa ne general powder metallurgy process. Nekudaro, neyakaomesesa chimiro che mold inogona kuumbwa yakawanda yakaoma chimiro zvikamu. Izvo zvawedzera mutengo.
Magiya, ratchets uye makamera
Magiya, ratchets uye makamu anonyanya kukodzera kugadzirwa nehupfu simbi simbi.
Zvakanakira kugadzirwa kwepoda metallurgy:
① Iyo dimensional kurongeka kwegiya mukugadzirwa kwakawanda kwakafanana.
② Nekuti iyo zvinhu sangano rine imwe porosity, inobatsira giya kuti rifambe zvakanaka uye rinogona kuzvizora.
③ Powder metallurgy gear ine bofu Angle inogona kugadzirwa.
Iyo giya uye zvimwe zvikamu zvechimiro zvinogona kubatanidzwa nehupfu metallurgy process.
⑤ Inogona kugadzira akasiyana siyana egiya.
⑥ Kugadzirwa kuri nyore uye mutengo wakaderera.
Powder metallurgy tolerances
Saizi yekuchinja pakati pehupfu metallurgy zvikamu zvinonyanya kukonzerwa nekuchinja kwekudzvanyirira.
Tichitarisa kudzvanyirira kwakafanana, iyo longitudinal elastic deflection ye die punch yakakura kupfuura kuwedzera elastic kweiyo negative die, saka kushivirira kwedimensional munzira yekutsikirira kwakakura kupfuura iyo iri muvertical pressing direction.
Mechanical relationships:
△ punch / △ the die = 3L/D
D inomiririra avhareji yeradial size yegomba reiyo yakaipa modhi.
L inomiririra kureba kwese kwefa punch.
Nzira yekuderedza sei dimensional tolerances?
Iyo dimensional kushivirira kwechikamu inogona kuvandudzwa nekupedzisa, iko kuisa iyo sintered chikamu mune yakaipa kufa uye kuitsikirira nekufa punching, ndiko kuti, kuitsikirira zvakare mukupedzisa kufa. Chinangwa chikuru chekupedzisa ndechekugadzirisa kukanganisa kunokonzerwa ne sintering.
Machiningyezvikamu zveupfu metallurgy
Chinangwa chikuru chekushandisa poda metallurgy zvikamu ndechekuwana kushoma kucheka, hapana kucheka kugadzirisa, kuchengetedza simba, kuchengetedza zvinhu, kuderedza mutengo wekugadzira wezvikamu. Powder metallurgy zvikamu hazvisi nyore kucheka sezvikamu zvinowirirana zvesimbi. Pamusana pekuita kwekucheka kwepakati kunokonzerwa nemapores muhutano hwezvinhu, hupenyu hwematurusi hupfupi uye kushata kwepamusoro kwechikamu kwakashata.
Chiyero chekutarisa machinability yehupfu metallurgy: sarudza machinability nekuyera huwandu hwemakomba anogona kuboorwa. Kukosha kwe1045 simbi kunotsanangurwa kuve zana, uye iyo machinability rating inogona kutsanangurwa neinotevera formula.
Machinability rating = huwandu hwemakomba akacherwa mu sintering / huwandu hwemakomba akacherwa mu1045 simbi ×100
Mn, P, S uye zvimwe zvinowedzera zvinowedzerwa kune zvinyorwa kuvandudza machinability ehupfu metallurgy zvikamu. Iyo yekucheka zvimiro zveupfu metallurgy zvinhu zvinogona zvakare kuvandudzwa nekusarudza nemazvo maturusi ekucheka carbide uye geometry yezvishandiso.
Mhedzisiro yehuwandu hwezvinhu pahupfu metallurgy zvikamu
Mukugadzirwa kwepoda metallurgy zvimiro zvikamu, kudzoreredza uye yechipiri sintering kunowanzo shandiswa kuvandudza density yezvikamu, uye zvikamu zvechimiro zvinogadzirwa zvinoenderana.nzira yekutsikirira -- primary sintering -- repressing -- secondary sintering.Kuwanda kwezvinhu zvezvikamu zvinogona kuwedzerwa kusvika kune95%yeiyo yesimbi yakajairwa nekudzvanya zvakare, yechipiri sintering uye inodziya kudzvanya.
Kudzvinyirirwa kwakafanana nekupedzisa, kudzvinyirirwa kwepamusoro kunoshandiswa panguva yekudzvinyirirwa kunongowedzera huwandu hwese hwechikamu, uye yechipiri sintering inoreva kudzoreredza mushure mekudzvinyirirwa. Kusimba uye kuoma kwezvikamu zvezvimiro zvinogona kuvandudzwa nekuda kwehurefu hwezvinhu zvezvikamu zvemugadziriso mushure mekudzvanya zvakare uye yechipiri sintering.
Powder Metallurgy Process
Kemikari yakagadzirwa uye mechanical properties
Iyo poda metallurgy zvikamu zvinogadzirwa ne general pressing and sintering process zvine porous, uye mashandiro awo emuchina akadzikira pane ayo edense metal zvinhu zvine makemikari akafanana anogadzirwa nenzira dzakajairwa. Kuti uvandudze ma mechanic properties ye powder metallurgy structural parts:
Iye zvinoupfuane alloying zvinhu ndezvi: simbi hupfu, mhangura upfu uye graphite upfu hwakakanyiwa, simbi upfu, nickel upfu, graphite upfu hwakakanyiwa, simbi, phosphorus simbi upfu hwakakanyiwa, diffusion alloyed upfu, kuti alloyed simbi hupfu uye Stainless simbi poda.
| Material Type | Common Materials | Key Features | Applications |
|---|---|---|---|
| Iron-based | Simbi, yakaderera-alloy simbi, Stainless simbi | Simba rakakwirira, kusapfeka | Auto zvikamu, michina |
| Mhangura-yakavakirwa | Mhangura, ndarira, ndarira | Good conductivity, corrosion-resistant | Zvikamu zvemagetsi, mabheya |
| Nickel-based | Nickel, nickel alloys | Inodzivirira kupisa, isingadziviriri | Aerospace, turbines |
| Titanium-based | Titanium, titanium alloys | Kusimba kwepamusoro, kureruka, kusaora | Zvishandiso zvekurapa, aerospace |
| Aluminium-yakavakirwa | Aluminium, aluminium alloys | Huremu, nyore kugadzirisa | Electronics, auto zvikamu |
| Hard alloys | Tungsten carbide, titanium carbide | Kuoma kwepamusoro, kusapfeka | Zvishandiso zvekucheka, molds |
| Magnetic zvinhu | Ferrite, NdFeB | Simba remagineti, rinodzivirira kupisa | Mota, sensors |
| High-tembiricha alloys | Nickel, cobalt-based alloys | Inodzivirira kupisa, oxidation-inodzivirira | Aerospace, kugadzirwa kwemagetsi |
| Composites | Metal-ceramic, simbi-carbon fiber | Simba rakakwirira, rakareruka | Aerospace, auto zvikamu |
Maitiro ekugadzira anoshandiswa ndeaya: kudzvanya - sintering, kudzvanya - pre-sintering - kudzvanya - sintering, inodziya kudzvanya - sintering, kupisa kudzvanya, kupisa kupisa uye zvichingodaro.
Kuvandudza maitiro ehupfu metallurgy zvikamu
Maitiro ekusimudzira emidziyo yakadai ndeyekudzikisa kana kubvisa mapores akasara mukati mechinhu, uye kugadzira iron-based zvinhu zvakasanganiswa nechromium, manganese, titanium, silicon uye zvimwe zvinhu kuvandudza ma mechanics echinyorwa uye kuwedzera nzvimbo yekushandisa.
Jiehuangikambani ine mukurumbira yepoda metallurgy zvigadzirwa muChina, Jiehuang zvigadzirwa zvinotengeswa kune nyika dzese pasirese, kunyanya kuItari, Poland, Denmark, USA, UK nedzimwe nyika,ndapota tumira mifananidzo yako, tichakupindura pakarepo!
