Special structure, keyless connection, high-chromium plate hammer, particular impact liner;

结构独特、无键连接、高铬板锤、独特的反击衬板；

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Therefore, the liner materials should be required to have both very high surface to resist the drilling and cutting of ore and very high strength and toughness to resist impact Lord.

因此，对衬板材质的要求是：既要求具有很高的表面硬度，以抵抗矿石的凿削与切削，又要求具有很高的强度与韧性，以抵抗冲击载荷。

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The results of calculating and experimenting show that the first and largest slap of impact between the piston and the liner occurs around the top dead center from the nonthrust to the thrust face.

经计算和实验表明：活塞在上止点附近，当活塞由非推力面快速地移向推力面时，对缸套具有较大的冲击能量。

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