| 摘要 |
<p>The invention relates to a method for producing self-edging and self-toothing till¬ age tool, the method comprising providing a coating member (5) made of hard metal by producing a casting insert (3) having a layer formed by said coating member (5) and providing a mould pattern for the tillage tool, the pattern has at least one pocket having the form of the of casting insert (3), placing the casting insert (3) into the pocket and creating a mould, removing the pattern from the mould while leaving casting insert (3) in the mould, closing the latter and filling the mould cavity with steel melt having a composition of C from 0.20 to 0.30 m%, Si 0.30 to 0.50 m%, Mn 1.35 to 1.90 m%, balance is Fe and unavoidable impurities, by a temperature between 1440 " C and 1520 ° C and the casting is allowed to cool.</p> |
