3D tshuab luam ntawv Nozzle PM Sintered Parts
Cemented carbide yog cov khoom siv hlau ua los ntawm ib los yog ntau tshaj carbides ntawm refractory hlau thiab binder hlau los ntawm hmoov metallurgy.Cemented carbide sintering molding yog nias cov hmoov rau hauv ib lub billet, ces cua sov rau ib tug tej yam kub (sintering kub) nyob rau hauv ib tug sintering rauv, khaws cia rau qee lub sijhawm (tuav lub sijhawm), thiab tom qab ntawd txias nws kom tau txais cov khoom siv cemented carbide nrog cov khoom uas yuav tsum tau ua.
Khoom Taw Qhia
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3D tshuab luam ntawv nozzle PM sintered qhov chaw |
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Yam khoom |
Khoom siv |
Txheej txheem ntau lawm |
Sintering kub |
Pwm |
Kev cai |
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3D tshuab luam ntawv nozzle hmoov metallurgy |
Carbide |
Hmoov metallurgy nias |
1380 degree |
Yuav tsum customized |
Yog lawm |
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Tshuaj muaj pes tsawg leeg |
C:0.42-0.50; Cr: Tsawg dua lossis sib npaug rau 0.25; Mn: 050-0.80; Ni: Tsawg dua lossis sib npaug rau 0.25; P: Tsawg dua lossis sib npaug rau 0.035; S: Tsawg dua lossis sib npaug rau 0.035; Si: 017-0.37 |
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Cov ntaub ntawv muaj |
Tsawg carbon stainless hlau, titanium alloy (Ti, TC4), tooj liab alloy, tungsten alloy, nyuaj alloy, kub kub alloy (718, 713) |
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Smoothness |
Dimensional raug |
Khoom ntom ntom |
Cov tsos mob kho |
Tsim nyog hnyav |
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Roughness 1-5μm |
(±{{0}}.1 feem pua -±0.5 feem pua) |
7. 3-7.6g/CM³ |
Raws li cov neeg siv khoom xav tau |
0.03g-400g) |
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Parts sintering txoj cai
Cemented carbide yog cov khoom siv hlau ua los ntawm ib lossis ntau dua carbides ntawm cov hlau refractory thiab khi hlau los ntawm hmoov metallurgy.
Cemented carbide sintering molding yog nias cov hmoov mus rau hauv ib lub billet, ces cua sov nws mus rau ib tug tej yam kub (sintering kub) nyob rau hauv ib tug sintering rauv, khaws cia rau ib tug tej lub sij hawm ntawm lub sij hawm (tuav lub sij hawm), thiab ces txias nws mus kom tau ib tug cemented. cov khoom siv carbide nrog cov khoom xav tau.
Thaum tsim cov cemented carbide, qhov loj me ntawm cov khoom siv raw hmoov yog nyob nruab nrab ntawm 1 thiab 2 microns, thiab purity siab heev. Cov ntaub ntawv raw yog sib xyaw ua ke raws li qhov sib xyaw ua ke, ntxiv cawv lossis lwm yam xov xwm thiab ntub-milled hauv lub pob zeb ntub kom ua rau lawv sib xyaw ua ke thiab crushed, tom qab ziab thiab sieving, ntxiv wax los yog kua nplaum thiab lwm yam molding agents, thiab tom qab ntawd ziab. thiab filtering Sift lub mix. Tom qab ntawd, qhov sib tov yog granulated thiab nias, thiab thaum rhuab kom ze rau lub melting point ntawm cov hlau bonding (1300-1500 degree), lub hardened theem thiab cov hlau bonding ua ib tug eutectic alloy. Tom qab txias, lub hardened theem yog faib nyob rau hauv daim phiaj tsim los ntawm kev sib txuas ntawm cov hlau, thiab lawv muaj kev sib raug zoo nrog ib leeg los ua ib tug ruaj khov. Lub hardness ntawm cemented carbide nyob ntawm hardening theem cov ntsiab lus thiab grain loj, uas yog, lub siab dua lub hardening theem cov ntsiab lus thiab lub finer lub grain loj, lub hardness ntau dua. Lub toughness ntawm cemented carbide yog txiav txim los ntawm cov binder hlau, siab dua cov binder hlau ntsiab lus, lub zog flexural ntau dua.
Plaub theem pib ntawm cov txheej txheem cemented carbide sintering
1) Nyob rau theem ntawm kev tshem tawm tus neeg sawv cev molding thiab pre-sintering, lub cev sintered tau hloov pauv hauv qab no:
Kev tshem tawm ntawm tus neeg sawv cev molding, raws li qhov kub nce nyob rau hauv thawj theem ntawm sintering, tus neeg sawv cev molding maj decomposes los yog vaporizes, thiab lub cev sintered raug tshem tawm. Hom, kom muaj nuj nqis, thiab sintering txheej txheem sib txawv. Cov oxides nyob rau saum npoo ntawm cov hmoov raug txo. Ntawm qhov kub ntawm sintering, hydrogen tuaj yeem txo cov oxides ntawm cobalt thiab tungsten. Yog tias tus neeg sawv cev raug tshem tawm thiab sintered hauv lub tshuab nqus tsev, cov tshuaj carbon-oxygen tsis muaj zog. Kev sib cuag kev ntxhov siab ntawm cov hmoov yog maj mam tshem tawm, cov hmoov hlau sib txuas pib rov zoo thiab rov ua dua tshiab, qhov chaw diffusion pib tshwm sim, thiab lub zog compact nce.
2) Khoom theem sintering theem (800 degree --eutectic kub)
Ntawm qhov kub thiab txias ua ntej cov kua theem tshwm, ntxiv rau kev txuas ntxiv cov txheej txheem uas tshwm sim nyob rau hauv lub dhau los theem, cov khoom theem cov tshuaj tiv thaiv thiab diffusion intensify, cov yas ntws yog txhim khu kev qha, thiab sintered lub cev shrinks ho.
3) Ua kua theem sintering theem (eutectic kub - sintering kub)
Thaum cov kua theem tshwm nyob rau hauv lub cev sintered, lub shrinkage yog ua tiav sai sai, ua raws li crystallization transformation los tsim cov qauv thiab cov qauv ntawm cov alloy.
4) Txias theem (sintering kub - chav tsev kub)
Nyob rau theem no, cov qauv thiab theem muaj pes tsawg leeg ntawm 3D tshuab luam ntawv nozzle PM sintered qhov chaw hloov nrog cov cua txias. Cov yam ntxwv no tuaj yeem siv los kho cov cemented carbide los txhim kho nws lub cev thiab cov khoom siv kho tshuab.
Hlau Txhaj Moulding txheej txheem
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