| 摘要 |
The invention provides a method of joining a first hard metal carbide article and a second article (preferably steel), said second article having a higher coefficient of heat expansion than said first article comprising positioning said articles adjacent each other and applying brazing filler metal to the joint between said articles and heating said brazing filler metal sufficient to braze said first and second articles together along said joint and then cooling said articles to obtain a permanent joint between them; and cooling said second article, while said brazing filler metal is being heated, sufficiently so that the amount of contraction of said second article during the cooling period subsequent to the brazing is substantially of the same magnitude as the contraction of said first article. The invention is particularly applicable to the production of elongated articles and of rimmed wheels and includes such novel composite articles. |
