Kev tsim cov txheej txheem ntawm kev ua haujlwm siab NdFeb hlau nplaum uas tsim los ntawm Xinfeng Magnet feem ntau suav nrog: Xinfeng hlau nplaum high-performance Ndfeb hlau nplaum tsim cov txheej txheem feem ntau suav nrog: raw khoom pretreatment thiab batching, nqus melting thiab sawb casting, hydrogen crushing thiab zoo sib tsoo (cua tshuab ) hmoov ua, hmoov sib sau thiab isostatic nias, dawb paug sintering thiab aging kev kho mob, hlau nplaum machining thiab lwm yam xya txheej txheem.
(1) Raw khoom pretreatment thiab batching: nyob rau hauv thiaj li yuav tshem tawm cov hlau oxide nyob rau saum npoo ntawm cov hlau ntshiab, txiav cov ntshiab hlau pas nrig nrog ib tug ntev ntawm 300 hli nrog ib tug txiav tshuab, thiab ces muab tso rau hauv lub txhaj tshuaj blasting tshuab rau xeb tshem tawm. , thiab tom qab ntawd xa mus rau qhov chaw batching hauv cov thoob rau batching.Raw khoom batching yog nqa tawm nyob rau hauv lub batching chav tsev.Raws li kev ua tau zoo, cov khoom siv raw batching piv yog hnyav thiab muab tso rau hauv cov khoom siv raw, thiab xa mus rau lub tshuab nqus tsev casting.
(2) Lub tshuab nqus tsev casting
① Nqus casting: tom qab tag nrho cov hlau tsis tshua muaj hauv ntiaj teb thiab cov hlau tsis tshua muaj hauv lub ntiaj teb nyob rau hauv lub qhov cub hauv lub tshuab nqus tsev casting yog melted thiab reacted kiag li, cov hlau yaj yog maj mam hliv rau hauv nruab nrab lub hnab los ntawm tilting lub crucible, thiab molten hlau alloy. kua yog sib npaug rau cov dej txias-txias cov menyuam los ntawm lub hnab nruab nrab.Pouring kub yog tswj ntawm 1350 ℃ thiab 1450 ℃.Nyob rau hauv ob qho kev ua haujlwm ntawm kev ua kom txias sai thiab kev kub ceev kev sib hloov (feem ntau hu ua ceev ceev sawb), cov kua alloy sai condensed rau hauv NdFeb alloy flakes nrog thickness ntawm 0.25 ~ 0.35mm.
②Cooling: NdFeb alloy flakes tau sau rau hauv dej-txias disk nyob rau hauv lub casting txias yob rau lwm qhov txias.Layout ntawm lub disk rotating ntaus ntawv tuaj yeem ua rau kom qhov txias txias ntawm NdFeb alloy daim ntawv, tom qab tos rau cov ntawv hlau txias txias hauv qab 60 ℃, nqa lub xeev ntawm micro tsis zoo siab hauv lub tshuab nqus tsev induction rauv, siv cua hloov pauv ntawm argon, ces qhib qhov cub. qhov rooj dag staging cov ntawv hlau rau hauv tshwj xeeb stainless hlau chim lossis rau hauv cov txheej txheem ua haujlwm tom ntej.
③ Kev tshuaj xyuas cov khoom lag luam zoo: txhua qhov khoom siv hluav taws xob yuav tsum raug kuaj xyuas kom paub tseeb tias cov khoom muaj pes tsawg leeg thiab kev ua tau zoo raws li qhov yuav tsum tau ua, cov khoom tsim nyog rau hauv cov txheej txheem tom ntej, cov khoom tsis tsim nyog rov qab los ua kom zoo dua.
(3) Hydrogen crushing: hydrogen crushing hmoov yog siv NdFeb hydrogen absorption ua ntej thiab tom qab lub ntim yuav hloov, thiaj li yuav ua tau ib tug zoo kev nyuaj siab nyob rau hauv nws internal cracking ntawm cov khoom, kom ua tiav cov crushing nyhuv.Hydrogen crushing txheej txheem tuaj yeem txhim kho kev ua haujlwm ntawm huab cua zeb, uas yog ntau tshaj ob zaug ntawm cov txheej txheem ib txwm muaj.
(4) Huab cua sib tsoo hmoov: cov hmoov hlau alloy tom qab hydrogen crushing yog loaded rau hauv lub tshuab cua, nyob rau hauv qhov kev txiav txim ntawm high-pressure nitrogen ntawm lub siab ntawm 0.7 ~ 0.8MPa, kev sib tsoo ntawm cov hmoov thiab ntxiv refined, thiab los ntawm kev faib system kom tau qhov loj me ntawm 3 ~ 5μm magnetic hmoov.
(5) Moulding: tom qab cov hmoov sib tov sib xyaw, 1.5t ~ 2.5T DC magnetic teb yog siv rau hauv kev tiv thaiv nitrogen cua kom cov hmoov hlau nplaum sib xyaw ua ke raws cov kev taw qhia ntawm sab nraud magnetic teb, thiab lub siab ntawm 0.1-1t / cm 2 yog siv los nias cov hmoov.Tom qab nias, rov qab magnetic teb ntawm 0.2 ~ 0.5 T tseem yuav tsum tau demagnetize lub billet.
(6) Sintering: cov hmoov nplej yog muab tso rau hauv cov khoom sib npaug, thiab tom qab ntawd sintered nyob rau hauv lub tshuab nqus tsev sintering rauv (nyob rau hauv lub tshuab nqus tsev ib puag ncig, qhov kub thiab txias yog khaws cia ntawm 1000 ~ 1100 ℃), kom tau cov txheeb ze ntom ntom ntawm tsis tsawg tshaj li. 90% ntawm sintered billet.
(7) Machining: Raws li cov neeg siv khoom xav tau, siv kev sib tsoo, drilling, xaim txiav thiab lwm yam kev ua haujlwm, NdFeb dawb paug tau ua tiav rau hauv qee yam duab thiab loj (square, puag ncig, nplhaib thiab lwm yam duab) ntawm cov hlau nplaum.
Post lub sij hawm: Dec-13-2020