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作为动搫凿岩的操作工具,鑲銲厂11型整片硬质合金片的带一字形钎刃的钎头(880-53)最为普遍。这一种钎头锻制和使用坚固而又简单,但是仍有严重的缺点,例如其中合金片,由於钎刃全长各点的负荷不均匀,刃尖磨掉很快,而中部实际上一点没有磨损。专门的观察表明:117型合金片原来重量是93克,未利用的剩余部分(当刃片高5公厘时)的平均重量等於48-50克,即甚至在钎头操作时没有崩刃掉角而至完全磨损的情况下,硬质合金片的利用率不能超过50％。‘硬质合金’管理处哈尔科夫分厂设计了一种
As the operating tool for rock drilling, the brazing tips (880-53) with in-line brazing blades are the most common types of inserts in the Type 11 Solid Carbide Sheets. This kind of drill head forging and use of solid and simple, but there are still serious shortcomings, such as which the alloy sheet, due to the entire length of the tip of the blade uneven load, the blade edge worn away quickly, while the central point No wear and tear. Special observations have shown that the original weight of Type 117 alloy is 93 grams and the average weight of the remaining unused portion (when the height of the blade is 5 mm) is equal to 48-50 grams, ie no collapsing even during bit operation Corner to complete wear case, carbide utilization can not exceed 50%. ’Carbide’ Management Branch Kharkiv branch designed a