[2]The invention discloses a ceramic diamond grinding wheel and its preparation method, which belongs to the technical field of the processing of abrasive tool.
[4]Grinding machining grinding wheel is the main type of grinding tool. In the grinding wheel is adding binder, the green compact, drying and roasting of the porous body is made of. Grinding wheel is the largest amount of grinding tools, the use of a wide, high-speed rotation when in use, can be of metal or non-metal work piece to the outer, inner circle, and the profile of the rough grinding, half correct grinding and fine grinding and slotting and cutting off and the like. Grinding wheel in order to bond abrasive material and said bonding agent, decision performance of binding agent the strength of the grinding wheel, the impact resistance, the heat resistance and the anti-corrosion ability. The binding agent is mainly divided into ceramic, resin, four kinds of rubber and metal, wherein the ceramic binder heat resistance, good corrosion resistance, large porosity, which is easy to keep profile, suitable for v < 35m/s of the various shaping grinding, rubs the gear , grinding thread.
[5]Ceramic binding agent diamond grinding wheel is good ceramic binder for the abrasive grain adhered, by pressing, drying, baking and finishing a, has a lot of holes, cutting of abrasive particles for the grinding tool. Ceramic binding agent diamond abrasive wheel a high strength, the heat resistance is good, cutting sharp, high grinding efficiency, in the process of grinding and is not easy to generate heat, the thermal expansion amount is small, in order to control the processing precision. Compared with resin-bonded grinding, it solves the problem that the resin of low service life of a diamond grinding wheel, the grinding efficiency is low, the abrasive tool in the process of grinding labilities problems. Therefore ceramic binding agent diamond abrasive wheel in the diamond, industrial ceramic, diamond compact, diamond polycrystal, diamond cutting tool, cubic boron nitride, hard alloy, such as hard and brittle material with some special material in the grinding processing, has the advantage of becoming increasingly obvious, in the development of the diamond grinding tool have a good prospect. Is considered to be high-speed, high-efficiency, high-precision, low grinding cost, low environmental pollution, high-performance grinding tool, has applied more widely, all countries of the world is the grinding tool to the research and development of hot spots.
[6]Content of the invention
[7]The purpose of this invention is to provide a ceramic diamond grinding wheel, ceramic binding agent in order to increase strength and hardness of the diamond grinding wheel, improve its performance.
[8]In order to achieve the above purpose, the technical proposal adopted by this invention are as follows:
[9]A ceramic diamond grinding wheel, characterized in that it is composed of the following parts by weight of the raw materials:
[10]Diamond abrasive 50-60, chromium corundum abrasive 10-20, scrap steel powder 4-8, walnut capsomeres 1-3, polyamide wax fine powder 2-3, trimellitic acid three Xin Zhi 1-2, bentonit 2-5, dolomite 2-5, ore [...] 3-6, quartz sand 2-5, waste iron powder 2-3.
[11]The bentonite, dolomite, ore [...] , quartz sand, the waste iron powder 2600-3000 the high-temperature smelting [...] , cooling latter ball into nano-ceramic powder, can be ceramic bonding agent.
[12]The method for preparing ceramic brown alumina grinding wheel, characterized in that comprises the following steps:
[13](1) according to the above-mentioned formulation mixing machine is all the components, blending 1-2 hours, fully mix;
[14](2) the mixing is poured into the mould, then the mould is put into press, at the same time heating the mold, first of the prepress 1-2 MPa, press, the heating temperature of the lower plate the 300-350 [...] , time 2-4 minutes, then boost pressure to 11-12 MPa, the pressure maintaining 3-5 minutes, and then the processing temperature to 720-750 the [...] , thermal insulation 2-3 hours; and then natural cooling to the 40-450 [...] , according to every minutes 3-5 the temperature to [...] the 1210-1250 [...] , thermal insulation 6-7 hours;
[15](3) cooling to normal temperature after the hot pressing, the grinding wheel can be taken out of the workpiece.
[16]The invention has the following beneficial effects:
[17]1, in the present invention the bonding agent adopts the ceramic material, can make the grinding wheel is not easy to deform, the advantages of good heat resistance, has high wear resistance, solves the poor heat resistance of the grinding wheels, the deformation is easy; various ceramic material good bonding property, can effectively prevent the crack, solves the problem that the existing grinding wheel binder performance is not optimum, abrasive is easy to fall off.
[18]2, ceramic binding agent component of the present invention the waste iron powder metal powder is added, not only the heat-transfer properties of the grinding wheel is improved, quick heat dissipation, the grinding temperature is low, and increase the hardness and strength of the emery wheel, reduce crack formed of rigid grinding, the grinding efficiency and the service life is far greater than traditional grinding wheel, the overall efficiency of 50% or more.
[20]The specific embodiment of the following a further description of this invention.
[22]Ceramic diamond grinding wheel consists of the following parts by weight of the raw material: diamond abrasive 50, chromium corundum abrasive 12, scrap steel powder 5, walnut capsomeres 1.4, polyamide wax fine powder 2.2, trimellitic acid three Xin Zhi 1.2, bentonit 2, dolomite 2, ore [...] 3, quartz sand 3, waste iron powder 2.1. The bentonite, dolomite, ore [...] , quartz sand, the waste iron powder 2687 the high-temperature smelting [...] , cooling latter ball into nano-ceramic powder, can be ceramic bonding agent.
[23]Method for preparing ceramic of a diamond grinding wheel comprises the following steps:
[24](1) the component according to the above-mentioned formulation mixing machine is, mixing 1 hour, fully mix;
[25](2) the mixing is poured into the mould, then the mould is put into press, at the same time heating the mold, the prepress first 1 MPa, press, the heating temperature of the lower plate 300 the [...] , time 2 clock, then boost pressure to 11 MPa, the pressure maintaining 3 minutes, and then the processing temperature to the 720 [...] , thermal insulation 2 hours;
[26](3) cooling to normal temperature after the hot pressing, the grinding wheel can be taken out of the workpiece.
[28]Ceramic diamond grinding wheel consists of the following parts by weight of the raw material: diamond abrasive 54, chromium corundum abrasive 15, scrap steel powder 6, walnut capsomeres 1.8, polyamide wax fine powder 2.5, trimellitic acid three Xin Zhi 1.4, bentonite 4, dolomite 5, ore [...] 4, quartz sand 3, waste iron powder 2.4. The bentonite, dolomite, ore [...] , quartz sand, the waste iron powder 2745 the high-temperature smelting [...] , cooling latter ball into nano-ceramic powder, can be ceramic bonding agent.
[29]Method for preparing ceramic of a diamond grinding wheel comprises the following steps:
[30](1) the component according to the above-mentioned formulation mixing machine is, mixing 1 hour, fully mix;
[31](2) the mixing is poured into the mould, then the mould is put into press, at the same time heating the mold, the prepress first 1 MPa, press, the heating temperature of the lower plate 310 the [...] , time 2 clock, then boost pressure to 11 MPa, the pressure maintaining 3 minutes, and then the processing temperature to 730 the [...] , thermal insulation 2 hours; and then natural cooling to the 40-450 [...] , according to every minutes 3-5 the temperature to [...] the 1210-1250 [...] , thermal insulation 6-7 hours;
[32](3) cooling to normal temperature after the hot pressing, the grinding wheel can be taken out of the workpiece.
