【摘要】 本文借鉴热保护理论 ,选用有机聚合物FB树脂和无机的金属氢化物MH2 作金刚石焊接热绝缘剂。测定了烧蚀金刚石试样的单颗粒抗压强度变化情况 ,对氧—乙炔焰堆焊试样进行了耐磨性试验 ,对试样做了SEM观察。所有实验表明 :所选热绝缘剂有效地避免了金刚石在高温焊接时出现变质或石墨化 ,保持了金刚石的优异性能 ,使其高耐磨性得到充分发挥。更多还原

【Abstract】 According to the heat insulation theory, the organic polymer FB resin and inorganic metal hydride MH 2 are selected as materials for the heat insulator of diamond welding. The change of compression strength of single diamond particle ablated was measured. The abrasion resistance of the samples produced by overlaying welding of oxy acetylene was determined by the impact grinding abrasion tester. The surface structure of samples was analyzed by SEM. The results indicated that the heat insulator selected in experiments can protect the diamond from deterioration or graphitization at high temperature of welding and remain excellent abrasion resistance and other properties of diamond after wleding.更多还原