文档介绍：摘要
金刚石切割锯片中,磨料主要靠机械夹持力把持在金属(烧结或电镀)胎体中。由于这一弱点,在切割过程中,金刚石不可避免地会从胎体中脱落或掉出。此外,金刚石突出高度较低,故金刚石工具的切割速度受到限制。而且,金属胎体和工作对象(被切割岩石)相互磨擦,将会导致金刚石和其它材料的热损伤,而且工作的功率消耗将增加。针对这一弱点,采用真空钎焊法制造了单层金刚石切割片。实验证明:金刚石采用钎焊的办法牢固地把持在金属胎体中,可形成强力的化学结合,金刚石磨料的突出高度将成倍提高,而不会从胎体中脱落或碎裂。结果表明:钎焊金刚石的出刃高度可达70%。在钎焊过程中,Ni-Cr合金钎料中的活性元素Cr向金刚石表面富集,Ni-Cr合金钎料中的Ni、Cr原子和胎体中的Co原子相互扩散使得胎体与金刚石结合牢固。钎焊多层均布钻头在工作中能够实现金刚石的自锐,具备连续加工能力。因此,金刚石切割片的速度也将会成倍提高。当金刚石钎焊在基体的表面时,熔化趋向于将金刚石聚集在一起,可促使钎焊层局部加厚。这种金刚石晶粒的成簇聚集将降低金刚石工具的切割效率。一种金刚石矩阵有序排列设计(grid)是必要的,它可保持钎焊层具有均匀的厚度。这种整体均匀焊层的支承可使金刚石工具高速有效切割,而功率消耗较低。因此,以达到高效耐磨的优良性能。
关键词:金刚石、真空钎焊、镍-铬合金、性能。
Title Efficient and durable brazed diamond cutting tablet
Abstract
Diamond cutting blade, the abrasive mainly dominated by mechanical clamping force in the metal (sintering or plating) in the matrix. Because of this weakness, in the cutting process, the diamond will e off from the carcass or fall out. In addition, diamond prominent at low altitudes, so the diamond tool cutting speed is limited. Moreover, the metal matrix and target (to be cut rock) mutual friction, diamond and other materials will lead to thermal damage, and the work of the power consumption will increase. In response to this weakness, manufactured by vacuum brazing sheet of single layer of diamond cutting. Experimental results show: Diamond brazing method used firmly in control in the metal matrix can form strong chemical bonding, a prominent diamond abrasive height will increase exponentially, and not from the carcass in the loss or fragmentation. The results showed that: brazing of diamond protrusion height up to 70%. In the brazing process, Ni-Cr alloy pound of the active element to the diamond surface enrichment of Cr, Ni-Cr alloy pound of Ni, Cr atoms and Co atoms in the matrix makes the matrix of mutual bined with the diamond Firm. Uniform multi-bit soldering work to achieve self-sharpening diamond, with continuous processing capacity. Therefore, the rate of diamond cutting disc will also be doubled. When the diamond brazi