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    • 2. 发明专利
    • Apex seal of rotary piston engine and its production method
    • 旋转活塞发动机的APEX密封及其生产方法
    • JPS59188001A
    • 1984-10-25
    • JP5108083
    • 1983-03-26
    • Mazda Motor Corp
    • MIYATA JIYUNYANAGII KOUJISHIMIZU TSUTOMU
    • C22C37/00C21D5/00C22C37/08F01C19/00F01C19/02
    • C22C37/08C21D5/00F01C19/005
    • PURPOSE: To obtain an apex seal highly resistant against abrasion and thermal impact forming it with a special composition of materials and making a sliding part of a chill texture and a mother material part of a beynite structure.
      CONSTITUTION: An apex seal 1 is fitted inside a seal groove 3 provided at the top of a rotor 2 to maintain the airtightness between neighboring operation rooms 6 and 7 closely attached to the inside of a rotor housing by a spring 4. The material of the seal 1 is composed of 2.5W4,0% of C, 1.5W3.0% of Si, less than 1.0% of Mn, 0.25W2.0% of Ni, 0.25W2.0% of Mo, 0.25W2.0% of Cu, 0.05W 0.3% of B, 0.2W1.5% of Cr, 0.05W1.0% of V and the rest of Fe on the basis of weight ratio. The sliding part is made of chill texture with more than 55% are ratio of carbide, and the mother material part is made of beynite texture with less than 15% area ratio of carbide.
      COPYRIGHT: (C)1984,JPO&Japio
    • 目的:获得高度耐磨损和热冲击的顶点密封,用专门的材料组成,制成寒冷纹理的滑动部分和贝氏体结构的母材部分。 构成:将顶点密封件1安装在设置在转子2的顶部的密封槽3内,以通过弹簧4将邻近的操作室6和7之间的气密保持紧密地附接到转子壳体的内部。 密封件1由C:2.5〜4.0%,Si:1.5〜3.0%,Mn:1.0%,Ni:0.25〜2.0%,Mo:0.25〜2.0%,Cu:0.25〜2.0% - 0.3%的B,0.2-1.5%的Cr,0.05-1.0%的V和其余的Fe以重量比为基础。 滑动部分由寒冷纹理制成,超过55%是碳化物比,母材部分由碳化物的面积比小于15%的黑质组织制成。