| 摘要 |
<p>A tire chain comprising tread links and connectors interconnecting the tread links to form a network of closed figures, the tread links and connectors being. of different carbon steels whereby after heat treating each is hardened throughout its thickness with the tread links having a surface hardness in the range 46 to 54 Rockwell and the connectors having a core hardness in the range 15 to 35 Rockwell.</p> |
