Công nghệ luyện kim bột chế tạo phôi loa phụt động cơ tên lửa nhiên liệu rắn cỡ lớn

NGHIEN Gl>U-TRAO DOI

CONG NGHE LUY6N KIM BO T CHfi TAO PH6 I LOA PHUT

DONG b a TEN LI>A NHIEN LIEU RAN C 0 LdN

POWDER METALLURGY FOR PRODUCING WORKPIECES OF LARGE

SOLID FUEL ROCKET NOZZLE

TS. I^an Ngoc Thanh

Vien Khoa hgc vd Cdng ngh§ Qudn su

TOM TAT

Bdi bdo trinh bdy nghiin cicu dp dung cong nghe luyen kim bgt di chi tgo phdi molybdeh.

Phdi sau ep, thieu kit dugc phdn tich td chuc vd do ty trong. Cdc kit qud do dgc vdphdn tich cho

thdy, phdi dap ung ldm vgt lieu chi tgo loa phut ddng ca tin lua nhien lieu rdn ca lan. Qui trinh

cdng nghi luyen kim bdt dp dying trong nghien cim ndy cd thi sic dung de che tao cdc phdi dgc chac

ca lan tie cdc kim logi cd nhiet do ndng chay cao.

Ttf khda: Tin lua, cdng nghi tin lua, cdng nghe vgt lieu.

ABSTRACT

The paper reseached aplication powder metallurgy for producing workpieces ofmolybden.

After impacting, sitering, samples was analyted density and microstructure. Result of analyting

show that the ingots can work to nozzle for large motor rocket Powder metallurgy used in this

researching can aplication to make large ingot of refractory metal.

Keywords: Missile technology, technology of powder metal.

1. MO BAU

Molybden la kim loai thude nhdm kim

loai cd nhiet dd ndng chay cao 2620''C. Hd sd

dan nd nhiet kha thdp, ddn didn vd ddn nhidt

tdt, cd do ben cao. Nhugc didm Id hi oxy hod

manh trong mdi trudng dxy hoa. Do ddn nhiet

cao han 50% so vdi cae hgp kim thep, sat, ni￾ken 11 ]. Molybden la kim loai quan trgng trong

nganh cdng nghi%> ten liia. Ddy Id vdt lieu tdt

de ldm loa phut ddng ca ten lira nhien lidu rdn,

eae chi tidt chiu nhiet khac nhu mep bS mat

canh didu khidn, van, tdm chdn nhidt biic xa.

cdnh tan nhidt, cdnh tuabin.. .[1,2]. Cdng nghS

iuyen kim hot la edng nghd ca ban dd che tao

phdi vd chi tiet tii kim loai molybden. Cdc yeu

td cdng nghd edn quan tdm la: Luc ep dinh hhih,

thdi gian thieu kit, khi thieu kdt, nhidt do thidu

ket. O nhidt do cao nhat, thdi gian thidu ket nen

duy tri ngan nhat dd tranh Idn hat. Khi thieu

kdt tao mdi trudng bdo ve, tranh eho mdu hi d

xy hda (khi tnmg tinh, khi hodn nguydn hoac

chdn khdng) [2]. Qua trinh thieu kdt true ti§p

mau khi ed ddng dien chay qua (hieu iing Jun￾Lenxa) trdn eac phdi ca nhd (tru (|)10xl0 mm)

duge dp tu bdt molybden xdy ra kha thudn Igi.

ISSN 0866 - 7056

TAP CHI CO KHl VIET NAM, Sd 1+2 nam 2017

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