Reactivity of Titanium with Abrasive Materials and Its Polishing.
Reactivity of Titanium with Abrasive Materials and Its Polishing.
复制标题
钛与磨料的反应性及其抛光。
DOI：
10.2186/jjps.42.540
复制
发表时间：
1998
期刊：
影响因子：
--
通讯作者：
O. Miyakawa
中科院分区：
文献类型：
--
作者：
O. Miyakawa
钛是一种难以加工的金属，因为它与磨料具有很高的反应性。氧化铝的切削率明显较低。相比之下，在较高的转速和较大的磨削力下，金刚砂的切削速率要大得多，但伴随着刀具的严重损耗。由于钛的热导率较低，因此应避免影响钛磨料反应的磨削温度升高。建议使用相对较低的转速和较小的力。此外，磨削过程中刀具不应压在工件上，而应在工件上移动，否则会产生不利的结果：磨料磨损、切屑负载和表面氧化或磨削烧伤。由于抛光也是磨料切削的过程，因此抑制钛磨料反应是高效抛光的重要关键。最近，电化学抛光和以胶态二氧化硅为磨料的机械抛光两种精加工技术在牙科中得到了成功的应用。当这些技术的反应抑制机制得到阐明时，新的发展将成为可能。
Titanium is a difficult-to-machine metal, due to its high reactivity with abrasives. The cutting rate of alumina is significantly low. In contrast, at higher rotational speed and greater grinding force, the cutting rate of carborundum is much greater, but accompanied by severe loss of the tool. Since titanium has low thermal conductivity, the grinding temperature influencing titanium-abrasive reactions should be kept from rising. Relatively low rotational speed and small force are recommended. In addition, the tool should not be depressed against the work during grinding but moved over the work, otherwise unfavorable results are yielded: abrasive attrition, chip loading and oxidation of the surface, or grinding burn. Since polishing is also a procedure of cutting by abrasives, inhibition of titanium-abrasive reaction is an important key to efficient polishing. Recently, two finishing techniques were successfully applied in dentistry, electrochemical buffing and mechanical buffing with colloidal silica as abrasive. When the reaction-inhibition mechanism is clarified in these techniques, a new development will be possible.