发明名称 |
PERFECTIONNEMENTS APPORTES A LA COULEE DES METAUX |
摘要 |
1300433 Production of sintered metal articles by slip casting BATTELLE DEVELOPMENT CORP 26 May 1970 [26 May 1969] 25131/70 Heading C7D Sintered metal articles of e.g. Fe, Co, Ni, Cu, Mo, W or alloys, are produced by slip casting a slip of a reducible compound of the metal having at least 35% wt of the particles less than 10 microns diameter, reducing the compound to metal and then sintering. The compounds are preferably the oxides with a maximum average particle size of 6 microns with at least 50% under 1 micron. Up to 50% volume of metal particles may be included in the slip. The preferred iron oxide is that formed by spray drying spent pickling liquor containing HCl and FeCl 2 . The Fe 3 O 3 formed is ball milled to the required size e.g. for 1-10 hours, made into a slip with water, cast into a plaster mould, dried, reduced at 1200‹ Fm H 2 and then sintered in H 2 at 2100‹F. Two green slip cast articles may be pinned together by abutting articles prior to reducing and sintering. A wet slip may be interposed between the abutting pieces. Alternatively a green slip cast may be placed in another mould and a further slip cast around it. |
申请公布号 |
BE751245(A1) |
申请公布日期 |
1970.11.16 |
申请号 |
BED751245 |
申请日期 |
1970.06.01 |
申请人 |
THE BATTELLE DEVELOPMENT CORP., 505 KING AVENUE, COLOMBUS, OHIO, 43201, (E.U.A.), |
发明人 |
J.R.SAGMULLER;R.I. HUNTER;J.R. SAGMULLER;R.I. HUNTER. |
分类号 |
B22F3/22;B22F9/18;(IPC1-7):22D/ |
主分类号 |
B22F3/22 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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