本文采用普通热压烧结法制备铜-镍-锡基金刚石砂轮。通过研究两种造孔剂混

In this paper, a common hot-press sintering method was used to prepare copper-nickel-tin based diamond grinding wheels. By studying the pore-forming effect when the two pore-forming agents are used in combination, the more appropriate doping ratio of the two pore-forming agents and the amount of the pore-forming agent added are selected to try to manufacture a diamond wheel with a high porosity metal bond. Effectively improve the self-sharpening of the grinding wheel, increase the proportion of pores inside the grinding wheel, expand the chip-containing and chip-removing space of the diamond grinding wheel, and thus improve the performance of the metal-bonded diamond grinding wheel. By individually changing the doping ratio and addition amount of the two pore-forming agents (sodium bicarbonate, ceramic hollow spheres) in the metal binder, arrange the test to prepare several groups of single-variable metal binder test strips. The amount of pore-forming agent added, the corresponding relationship between the two types of pore-forming agent, and the potential relationship between the bending strength and the amount of pore-forming agent added, ceramic hollow ball doping ratio; observe the shape of the pores inside the grinding wheel and pore-forming The relationship between the doping ratio of the agent and the amount of addition; the effect of the shape and distribution of the pore structure on the impact resistance of the binder spline at the same or similar porosity; at the same time, the type and amount of pore-forming agent on the metal binder test Effect of strip hardness. Theoretical analysis of the mechanism of grinding and removal of hard and brittle materials is carried out, and several advantages of using porous metal bond diamond grinding wheels when cutting difficult-to-machine materials are obtained.

In this paper, copper-nickel-tin-based diamond grinding wheels are prepared by ordinary hot-press sintering method. By studying the hole-making effect of the two perforators mixed, the doping ratio of the two more suitable perforators and the addition of the pore-making agent are selected, and try to create a metal binding agent with a high porosity diamond grinding wheel, effectively improve the self-sharpness of the grinding wheel, and increase the proportion of pores inside the grinding wheel, and expand the chip drain space of the diamond grinding wheel, thereby improving the performance of the metal binding agent diamond grinding wheel. By individually changing the doping ratio and addition of two perforators (sodium bicarbonate, ceramic hollow ball) in the metal binding agent, arranging the experimental preparation of a number of groups of metal binding agent test bars to obtain a single variable, the study yield and the addition of pore agent, the correspondence between the type of perforator, and the potential relationship between the bending strength and the perforator addition, ceramic hollow ball ratio; The shape and distribution of the same or similar pore structure affectthesr of the anti-impact ability of the binding agent sample, and the effect of the type of perforator and the amount of addition on the hardness of the metal binder test strip is studied. The grinding removal mechanism of processing hard and brittle materials is analyzed theoretically, and several advantages of using the multiporous metal binder diamond grinding wheel in cutting difficult-to-process materials are obtained.

In this paper, the common hot pressing sintering method is used to prepare Cu Ni Sn based diamond grinding wheel. Based on the study of the effect of two kinds of pore forming agents, the appropriate doping ratio and the amount of pore forming agent are selected, and the metal bonded diamond wheel with high porosity is tried to be manufactured, which can effectively improve the self sharpening of the wheel, increase the proportion of pores in the inner part of the wheel, enlarge the space of chip holding and chip removing of the diamond wheel, so as to improve the metal bond The performance of diamond wheel. By changing the doping ratio and addition amount of two kinds of pore formers (sodium bicarbonate and ceramic hollow ball) in the metal bond separately, several groups of metal bond test strips with single variable were prepared by arranging the test. The corresponding relationship between porosity and the addition amount of pore formers, and the type of pore formers, as well as the relationship between bending strength and the addition amount of pore formers, and the doping ratio of ceramic hollow ball were studied The potential relationship between the samples; the relationship between the pore shape of the grinding wheel and the doping ratio and the addition amount of the pore forming agent; the influence of the pore structure shape and distribution on the impact resistance of the bond spline with the same or similar porosity; and the influence of the pore forming agent type and the addition amount on the hardness of the metal bond specimen. Based on the theoretical analysis of the grinding removal mechanism of hard and brittle materials, several advantages of using porous metal bond diamond wheel in cutting difficult materials are obtained.<br>