发明名称 |
Ceramic cutting tool composition, method of its manufacture and its use in machining cast iron. |
摘要 |
<p>A ceramic material suitable for use in cutting tools comprises a hot pressed composition containing Si3N4 and at least one of the oxides Y2 O3, ZrO2 and MgO. Ternary systems based on Si3N4, SiO2 and 4 to 12 wt% Y2 O3 are preferred in which Y2 O3: SiO2 is from 1.2 to 3.0 Hot pressing at 1700 to 1750 DEG C and 5000 to 6,500 psi for 3 to 8.5 hours produces a material with a thermal shock parameter of at least 26 x 10<4> BUT - lbs/hr (in<3>) at 1200 DEG C which can be used for making cast iron.</p> |
申请公布号 |
EP0009859(A1) |
申请公布日期 |
1980.04.16 |
申请号 |
EP19790301012 |
申请日期 |
1979.05.31 |
申请人 |
FORD MOTOR COMPANY LIMITED;FORD-WERKE AKTIENGESELLSCHAFT;FORD FRANCE SOCIETE ANONYME;FORD MOTOR COMPANY |
发明人 |
SAMATA, SHYAM KINKAR;SUBRAMANIAN, KRISHNAMOORTHY;EZIS, ANDRE;MOSKOWITZ, DAVID |
分类号 |
B23B27/14;C04B35/593;(IPC1-7):04B35/58;01B21/06;23B27/14 |
主分类号 |
B23B27/14 |
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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