技术领域technical field
本发明涉及超硬磨料领域，具体涉及一种青铜基CBN砂轮及其制备方法。The invention relates to the field of superhard abrasives, in particular to a bronze-based CBN grinding wheel and a preparation method thereof.
背景技术Background technique
随着现代机械加工朝着高精度、高速度、硬加工、干加工(无冷却液)及降低成本等方向发展，对磨具性能提出了相当高的要求。传统的碳化硅和刚玉普通磨料模具已不能完全满足当前高速、高效、高精度的磨削要求，因此开发各种耐磨性能优良，能长时间进行稳定加工的超硬磨削材料是必然的发展趋势。目前常用的超硬磨削材料包括立方氮化硼(CBN)和金刚石两种磨料。立方氮化硼磨料的硬度虽低于金刚石，但仍远高于刚玉和碳化硅材料，并且该磨料的热稳定性优于金刚石，有很好的耐磨抗腐蚀性。立方氮化硼砂轮不仅能应用于高效精密磨削航空发动机零件(如盘、轴等)的钛合金、镍基高温合金等高强韧性的难以加工的材料，而且不会与铁及铁合金发生反应能够广泛应用于铁基合金(黑色金属)材料如淬硬钢、高速工具钢、轴承钢、不锈钢、模具钢、耐热钢、先进高强钢和高铬铸铁等材料。CBN超硬磨具(砂轮)的磨削效率、加工精度和耐磨性等性能是高速精密磨削加工中的关键问题。With the development of modern machining in the direction of high precision, high speed, hard machining, dry machining (no coolant) and cost reduction, quite high requirements are put forward for the performance of abrasive tools. Traditional silicon carbide and corundum ordinary abrasive molds can no longer fully meet the current high-speed, high-efficiency, and high-precision grinding requirements. Therefore, it is an inevitable development to develop various superhard grinding materials with excellent wear resistance and stable processing for a long time trend. Currently commonly used superhard grinding materials include cubic boron nitride (CBN) and diamond abrasives. Although the hardness of cubic boron nitride abrasive is lower than that of diamond, it is still much higher than corundum and silicon carbide materials, and the thermal stability of the abrasive is better than that of diamond, and it has good wear resistance and corrosion resistance. Cubic boron nitride grinding wheel can not only be used for high-efficiency and precise grinding of titanium alloys, nickel-based superalloys and other difficult-to-machine materials of aero-engine parts (such as discs, shafts, etc.), but also does not react with iron and iron alloys. Widely used in iron-based alloy (ferrous metal) materials such as hardened steel, high-speed tool steel, bearing steel, stainless steel, die steel, heat-resistant steel, advanced high-strength steel and high-chromium cast iron and other materials. The grinding efficiency, machining accuracy and wear resistance of CBN superhard abrasive tools (grinding wheels) are the key issues in high-speed precision grinding.
在超硬磨具中用于固结磨粒的结合剂是影响超硬磨具性能的关键因素。传统的超硬磨具(砂轮)多采用树脂、陶瓷、金属结合剂烧结和电镀等工艺制造，存在的问题是单晶颗粒仅仅被机械包埋镶嵌在结合剂与电镀层中，与结合剂和电镀层间作用力较弱。具体的来说，树脂结合剂虽然比较容易加工修整，但是耐热性差，结合强度低，磨料脱落严重，严重影响效率；陶瓷结合剂修整相对容易，使用温度高，然而脆性大，抗冲击韧性和疲劳性差，易发生脆裂，难以用于高速加工。金属结合剂烧结虽然耐热性强，但是通常结合剂与磨粒之间不能产生化学冶金结合，因而磨粒仅仅被机械包埋镶嵌在结合剂中，把持力有限；金属电镀中磨粒也只是被机械地包埋。因此容易因磨料呈颗粒脱落和镀层成片剥离而导致砂轮的整体失效，此种情况在比较难以加工的材料高效磨削时尤其明显；另外，镀层厚，磨料出露高度低，容屑空间小，磨削时很容易因切屑的粘附堵塞而失效。The bond used to consolidate abrasive grains in superabrasives is a key factor affecting the performance of superabrasives. Traditional superhard abrasives (grinding wheels) are mostly manufactured by resin, ceramics, metal bond sintering and electroplating. The problem is that single crystal particles are only mechanically embedded in the bond and electroplating layer, and bond and The force between plating layers is weak. Specifically, although the resin bond is relatively easy to process and repair, it has poor heat resistance, low bonding strength, serious abrasive shedding, and seriously affects efficiency; the vitrified bond is relatively easy to repair and has a high service temperature, but it is brittle and impact toughness. Poor fatigue, prone to brittle cracks, difficult for high-speed processing. Although metal bond sintering has strong heat resistance, chemical metallurgical bonding cannot occur between the bond and the abrasive grains, so the abrasive grains are only mechanically embedded in the bond with limited holding power; abrasive grains in metal electroplating are only are mechanically embedded. Therefore, it is easy to cause the overall failure of the grinding wheel due to the particle shedding of the abrasive and the peeling off of the coating in flakes. This situation is especially obvious when the more difficult-to-process materials are efficiently ground; in addition, the coating is thick, the exposure height of the abrasive is low, and the chip space is small. , It is easy to fail due to the adhesion and clogging of chips during grinding.
发明内容Contents of the invention
为了解决上述问题，本发明提供了一种青铜基CBN砂轮及其制备方法，该砂轮是一种在高速磨削过程中能承受较大载荷的CBN砂轮，同时具有出色的抗冲击性和良好的形状保持性，其具体的技术方案如下：In order to solve the above problems, the present invention provides a bronze-based CBN grinding wheel and its preparation method, which is a CBN grinding wheel that can withstand a large load during high-speed grinding, and has excellent impact resistance and good Shape retention, the specific technical solution is as follows:
本发明的一种青铜基CBN砂轮，其包括钢芯、磨料圈，钢芯和磨料圈通过树脂胶粘结剂结合，其中，磨料圈按质量百分比由以下组分制备而成：CBN磨料：35～60％，金属结合剂：40～60％，辅助粘结剂：10～30％，CBN磨料、金属结合剂与辅助粘结剂质量百分比之和为100％；所述的金属结合剂含有成分的质量百分比为：Cu60Sn40粉：40～70％，Ti粉：35～65％，Cu60Sn40粉和Ti粉质量百分比之和为100％；磨料圈组成按体积百分比为：CBN磨料15～50％，金属结合剂10～45％，孔隙20～45％，CBN磨料、金属结合剂和孔隙的体积百分比之和为100％。A kind of bronze base CBN emery wheel of the present invention, it comprises steel core, abrasive material ring, and steel core and abrasive material ring are combined by resin adhesive, and wherein, abrasive material ring is prepared by the following components by mass percentage: CBN abrasive material: 35 ～60%, metal bond: 40～60%, auxiliary binder: 10～30%, the sum of the mass percentage of CBN abrasive, metal bond and auxiliary binder is 100%; the metal bond contains ingredients The mass percentage of Cu60Sn40 powder: 40-70%, Ti powder: 35-65%, the sum of the mass percentage of Cu60Sn40 powder and Ti powder is 100%; the composition of the abrasive circle is: CBN abrasive 15-50%, metal The bonding agent is 10-45%, the pores are 20-45%, and the volume percentage of CBN abrasive, metal bonding agent and pores is 100%.
所述的Cu60Sn40粉和Ti粉的粒径范围均为30～350μm。The particle size ranges of the Cu60Sn40 powder and Ti powder are both 30-350 μm.
所述的辅助粘结剂为丙烯酸乳液。The auxiliary binder is acrylic emulsion.
本发明的一种青铜基CBN砂轮的制备方法，包括如下步骤：A kind of preparation method of bronze base CBN emery wheel of the present invention, comprises the steps:
步骤1，混料：Step 1, mixing ingredients:
按一种青铜基CBN砂轮的成分配比，将CBN磨料、Cu60Sn40粉和Ti粉混合均匀，制得混合料A；Mix CBN abrasive, Cu60Sn40 powder and Ti powder uniformly according to the composition ratio of a bronze-based CBN grinding wheel to prepare a mixture A;
步骤2，混料：Step 2, mix:
按一种青铜基CBN砂轮的成分配比，将辅助粘结剂与混合料A混合均匀，制得混合料B；According to the composition ratio of a bronze-based CBN grinding wheel, the auxiliary binder is uniformly mixed with the mixture A to prepare the mixture B;
步骤3，烘干：Step 3, drying:
将混合料B加热至50～150℃，烘干至按质量比，烘干后的混合料B：烘干前的混合料B＝80～95％；Heat the mixture B to 50-150°C, and dry it to the mass ratio, the mixture B after drying: the mixture B before drying = 80-95%;
步骤4，过筛：Step 4, sieve:
将烘干后的混合料B过筛，过筛目数为20～300目；Sieve the dried mixture B with a mesh number of 20 to 300 mesh;
步骤5，成型：Step 5, molding:
将过筛后的混合料B，均匀投入模具内，冷压成型，压力为40～200MPa，保压20～120min，制得磨料圈生坯；The sieved mixture B is evenly put into the mold, cold-pressed to form, the pressure is 40-200MPa, and the pressure is maintained for 20-120min to prepare the green body of the abrasive ring;
步骤6，烧结：Step 6, sintering:
(1)将磨料圈生坯，在惰性气体气氛下烧结，以3～10℃/min的升温速率，从室温升温至烧结温度800～1050℃，烧结时间10～150min；(1) The green body of the abrasive ring is sintered under an inert gas atmosphere, and the temperature is raised from room temperature to a sintering temperature of 800-1050°C at a heating rate of 3-10°C/min, and the sintering time is 10-150min;
(2)烧结后冷却至≤40℃出炉，制得磨料圈坯体；(2) After sintering, cool to ≤40°C and take out the furnace to prepare the green body of the abrasive ring;
步骤7，粘结：Step 7, Bonding:
用树脂胶粘结剂，将磨料圈坯体与钢芯粘合，去除毛边，修整成型，制得青铜基CBN砂轮。The abrasive ring blank was bonded to the steel core with a resin adhesive, the burrs were removed, and the shape was trimmed to obtain a bronze-based CBN grinding wheel.
上述的一种青铜基CBN砂轮及其制备方法，其中：A kind of above-mentioned bronze base CBN emery wheel and preparation method thereof, wherein:
所述步骤1中，混合时间为2～8h。In the step 1, the mixing time is 2-8 hours.
所述步骤2中，通过搅拌混合均匀，搅拌时间为1～6h。In the step 2, the mixture is uniformly mixed by stirring, and the stirring time is 1-6 hours.
所述步骤3中，烘干保温时间为1～3h。In the step 3, the drying and heat preservation time is 1 to 3 hours.
所述步骤4中，过筛2～8遍。In step 4, sieve 2 to 8 times.
所述步骤5中，冷压成型采用液压机。In the step 5, a hydraulic press is used for cold pressing.
所述步骤6中，惰性气体为氩气。In the step 6, the inert gas is argon.
本发明的一种青铜基CBN砂轮及其制备方法，与现有技术相比，有益效果为：A kind of bronze base CBN emery wheel of the present invention and preparation method thereof, compared with prior art, beneficial effect is:
(1)本发明的青铜基CBN砂轮具有极好的热导率可以快速的降低磨削工件表面的温度，从而降低功率损耗，提高磨削速度；配方中的辅助粘结剂有利于产品孔隙的形成，可以有效增大容纳脱落的磨粒的空间，磨料的利用更加充分，同时金属结合剂有极强的把持力；砂轮具有磨削效率高、磨削温度低、功率损耗低、加工精度好、使用寿命长等特点。(1) The bronze-based CBN grinding wheel of the present invention has excellent thermal conductivity and can quickly reduce the temperature of the grinding workpiece surface, thereby reducing power loss and improving grinding speed; the auxiliary binder in the formula is conducive to the formation of product pores Formation can effectively increase the space for accommodating falling off abrasive grains, and the use of abrasives can be more fully. At the same time, the metal bond has a strong holding force; the grinding wheel has high grinding efficiency, low grinding temperature, low power loss, and good machining accuracy. , Long service life and so on.
(2)本发明提供的制备方法，由于烧结时间短，磨料的特性没有受到损害，烧结温度、金属结合剂、孔隙率和时间的控制，使砂轮在工作过程中具有良好的热导率和较大的容纳金属屑和磨料的空间，在高速磨削过程中也不易堵塞，磨削锋利，磨削精度高，且具有自锐性。(2) The preparation method provided by the present invention, because the sintering time is short, the characteristics of the abrasive are not damaged, and the control of the sintering temperature, metal bond, porosity and time makes the emery wheel have good thermal conductivity and comparative It has a large space for metal shavings and abrasives, and it is not easy to be blocked during the high-speed grinding process. The grinding is sharp, the grinding precision is high, and it has self-sharpening.
具体实施方式Detailed ways
下面结合具体实施案例对本发明作进一步说明，但本发明并不局限于这些实施例。The present invention will be further described below in conjunction with specific examples of implementation, but the present invention is not limited to these examples.
以下实施例中，多情气体为氩气。In the following examples, the amorous gas is argon.
实施例1Example 1
一种青铜基CBN砂轮，其包括钢芯、磨料圈，钢芯和磨料圈通过树脂胶粘结剂结合，其中，磨料圈按质量百分比由以下组分制备而成：CBN磨料：40％，金属结合剂：45％，辅助粘结剂：15％，CBN磨料、金属结合剂与辅助粘结剂质量百分比之和为100％；所述的金属结合剂含有成分的质量百分比为：Cu60Sn40粉：50％，Ti粉：50％，Cu60Sn40粉和Ti粉质量百分比之和为100％；磨料圈组成按体积百分比为：CBN磨料35％，金属结合剂38％，孔隙27％，CBN磨料、金属结合剂和孔隙的体积百分比之和为100％；所述的CBN磨料、Cu60Sn40粉和Ti粉的粒径均为50μm；所述的辅助粘结剂为丙烯酸乳液。A bronze-based CBN grinding wheel, which includes a steel core, an abrasive ring, the steel core and the abrasive ring are combined by a resin adhesive, wherein the abrasive ring is prepared from the following components by mass percentage: CBN abrasive: 40%, metal Bonding agent: 45%, auxiliary bonding agent: 15%, the sum of the mass percentage of CBN abrasive, metal bonding agent and auxiliary bonding agent is 100%; the mass percentage of the composition contained in the metal bonding agent is: Cu60Sn40 powder: 50% %, Ti powder: 50%, the sum of the mass percentages of Cu60Sn40 powder and Ti powder is 100%; the composition of the abrasive circle is: CBN abrasive 35%, metal bond 38%, porosity 27%, CBN abrasive, metal bond The sum of the volume percentages of pores and voids is 100%; the particle diameters of the CBN abrasive, Cu60Sn40 powder and Ti powder are all 50 μm; the auxiliary binder is acrylic emulsion.
上述的CBN砂轮的制备方法，包括如下步骤：The preparation method of above-mentioned CBN emery wheel, comprises the steps:
步骤1，混料：Step 1, mixing ingredients:
按一种CBN砂轮的成分配比，将CBN磨料、Cu60Sn40粉和Ti粉混合均匀，混合时间为1h，制得混合料A；Mix the CBN abrasive, Cu60Sn40 powder and Ti powder uniformly according to the composition ratio of a CBN grinding wheel, and the mixing time is 1h to prepare the mixture A;
步骤2，混料：Step 2, mix:
按一种CBN砂轮的成分配比，将辅助粘结剂与混合料A混合通过搅拌混合均匀，搅拌时间为1h，制得混合料B；According to the composition ratio of a CBN grinding wheel, the auxiliary binder is mixed with the mixture A and mixed evenly by stirring, and the stirring time is 1h to prepare the mixture B;
步骤3，烘干：Step 3, drying:
将混合料B加热至75℃，烘干保温时间为1h，按质量比，烘干后的混合料B：烘干前的混合料B＝92％；Heat the mixture B to 75°C, and the drying and holding time is 1h. According to the mass ratio, the mixture B after drying: the mixture B before drying = 92%;
步骤4，过筛：Step 4, sieve:
将烘干后的混合料B过筛，过筛目数为100目，过筛3遍；Sieve the dried mixture B with a mesh number of 100, and sieve 3 times;
步骤5，成型：Step 5, molding:
将过筛后的混合料B，均匀投入模具内，采用液压机冷压成型，压力为75MPa，保压40min，制得磨料圈生坯；Put the sieved mixture B evenly into the mold, and use a hydraulic press to cold-press to form, the pressure is 75MPa, and the pressure is kept for 40min to obtain the green body of the abrasive ring;
步骤6，烧结：Step 6, sintering:
(1)将磨料圈生坯，在惰性气体气氛下烧结，以10℃/min的升温速率，从室温升温至烧结温度960℃，烧结时间30min；(1) The green body of the abrasive ring is sintered under an inert gas atmosphere, and the temperature is raised from room temperature to a sintering temperature of 960°C at a heating rate of 10°C/min, and the sintering time is 30min;
(2)烧结后冷却至≤40℃出炉，制得磨料圈坯体；(2) After sintering, cool to ≤40°C and take out the furnace to prepare the green body of the abrasive ring;
步骤7，粘结：Step 7, Bonding:
用树脂胶粘结剂，将磨料圈坯体与钢芯粘合，去除毛边，修整成型，制得青铜基CBN砂轮。The abrasive ring blank was bonded to the steel core with a resin adhesive, the burrs were removed, and the shape was trimmed to obtain a bronze-based CBN grinding wheel.
实施例2Example 2
一种青铜基CBN砂轮，其包括钢芯、磨料圈，钢芯和磨料圈通过树脂胶粘结剂结合，其中，磨料圈按质量百分比由以下组分制备而成：CBN磨料：40％，金属结合剂：40％，辅助粘结剂：20％，CBN磨料、金属结合剂与辅助粘结剂质量百分比之和为100％；所述的金属结合剂含有成分的质量百分比为：Cu60Sn40粉：55％，Ti粉：45％，Cu60Sn40粉和Ti粉质量百分比之和为100％；磨料圈组成按体积百分比为：CBN磨料37％，金属结合剂32％，孔隙31％，CBN磨料、金属结合剂和孔隙的体积百分比之和为100％；所述的CBN磨料、Cu60Sn40粉和Ti粉的粒径均为100μm；所述的辅助粘结剂为丙烯酸乳液。A bronze-based CBN grinding wheel, which includes a steel core, an abrasive ring, the steel core and the abrasive ring are combined by a resin adhesive, wherein the abrasive ring is prepared from the following components by mass percentage: CBN abrasive: 40%, metal Bonding agent: 40%, auxiliary bonding agent: 20%, the sum of the mass percentage of CBN abrasive, metal bonding agent and auxiliary bonding agent is 100%; the mass percentage of described metal bonding agent containing composition is: Cu60Sn40 powder: 55% %, Ti powder: 45%, the sum of the mass percentages of Cu60Sn40 powder and Ti powder is 100%; the composition of the abrasive circle is: CBN abrasive 37%, metal bond 32%, pores 31%, CBN abrasive, metal bond The sum of volume percentages of pores and voids is 100%; the particle diameters of the CBN abrasive, Cu60Sn40 powder and Ti powder are all 100 μm; the auxiliary binder is acrylic emulsion.
上述的CBN砂轮的制备方法，包括如下步骤：The preparation method of above-mentioned CBN emery wheel, comprises the steps:
步骤1，混料：Step 1, mixing ingredients:
按一种CBN砂轮的成分配比，将CBN磨料、Cu60Sn40粉和Ti粉混合均匀，混合时间为1h，制得混合料A；Mix the CBN abrasive, Cu60Sn40 powder and Ti powder uniformly according to the composition ratio of a CBN grinding wheel, and the mixing time is 1h to prepare the mixture A;
步骤2，混料：Step 2, mix:
按一种CBN砂轮的成分配比，将辅助粘结剂与混合料A混合通过搅拌混合均匀，搅拌时间为1h，制得混合料B；According to the composition ratio of a CBN grinding wheel, the auxiliary binder is mixed with the mixture A and mixed evenly by stirring, and the stirring time is 1h to prepare the mixture B;
步骤3，烘干：Step 3, drying:
将混合料B加热至75℃，烘干保温时间为1h，按质量比，烘干后的混合料B：烘干前的混合料B＝92％；Heat the mixture B to 75°C, and the drying and holding time is 1h. According to the mass ratio, the mixture B after drying: the mixture B before drying = 92%;
步骤4，过筛：Step 4, sieve:
将烘干后的混合料B过筛，过筛目数为100目，过筛3遍；Sieve the dried mixture B with a mesh number of 100, and sieve 3 times;
步骤5，成型：Step 5, molding:
将过筛后的混合料B，均匀投入模具内，采用液压机冷压成型，压力为75MPa，保压40min，制得磨料圈生坯；Put the sieved mixture B evenly into the mold, and use a hydraulic press to cold-press to form, the pressure is 75MPa, and the pressure is kept for 40min to obtain the green body of the abrasive ring;
步骤6，烧结：Step 6, sintering:
(1)将磨料圈生坯，在惰性气体气氛下烧结，以10℃/min的升温速率，从室温升温至烧结温度960℃，烧结时间30min；(1) The green body of the abrasive ring is sintered under an inert gas atmosphere, and the temperature is raised from room temperature to a sintering temperature of 960°C at a heating rate of 10°C/min, and the sintering time is 30min;
(2)烧结后冷却至≤40℃出炉，制得磨料圈坯体；(2) After sintering, cool to ≤40°C and take out the furnace to prepare the green body of the abrasive ring;
步骤7，粘结：Step 7, Bonding:
用树脂胶粘结剂，将磨料圈坯体与钢芯粘合，去除毛边，修整成型，制得青铜基CBN砂轮。The abrasive ring blank was bonded to the steel core with a resin adhesive, the burrs were removed, and the shape was trimmed to obtain a bronze-based CBN grinding wheel.
实施例3Example 3
一种青铜基CBN砂轮，其包括钢芯、磨料圈，钢芯和磨料圈通过树脂胶粘结剂结合，其中，磨料圈按质量百分比由以下组分制备而成：CBN磨料：35％，金属结合剂：42％，辅助粘结剂：23％，CBN磨料、金属结合剂与辅助粘结剂质量百分比之和为100％；所述的金属结合剂含有成分的质量百分比为：Cu60Sn40粉：60％，Ti粉：40％，Cu60Sn40粉和Ti粉质量百分比之和为100％；磨料圈组成按体积百分比为：CBN磨料35％，金属结合剂30％，孔隙35％，CBN磨料、金属结合剂和孔隙的体积百分比之和为100％；所述的CBN磨料、Cu60Sn40粉和Ti粉的粒径均为150μm；所述的辅助粘结剂为丙烯酸乳液。A bronze-based CBN grinding wheel, which includes a steel core, an abrasive ring, the steel core and the abrasive ring are combined by a resin adhesive, wherein the abrasive ring is prepared from the following components by mass percentage: CBN abrasive: 35%, metal Bonding agent: 42%, auxiliary bonding agent: 23%, the sum of the mass percentage of CBN abrasive, metal bonding agent and auxiliary bonding agent is 100%; the mass percentage of described metal bonding agent containing composition is: Cu60Sn40 powder: 60 %, Ti powder: 40%, the sum of the mass percentages of Cu60Sn40 powder and Ti powder is 100%; the composition of the abrasive circle is: 35% of CBN abrasive, 30% of metal bond, 35% of pores, CBN abrasive, metal bond The sum of the volume percentages of pores and voids is 100%; the particle diameters of the CBN abrasive, Cu60Sn40 powder and Ti powder are all 150 μm; the auxiliary binder is acrylic emulsion.
上述的CBN砂轮的制备方法，包括如下步骤：The preparation method of above-mentioned CBN emery wheel, comprises the steps:
步骤1，混料：Step 1, mixing ingredients:
按一种CBN砂轮的成分配比，将CBN磨料、Cu60Sn40粉和Ti粉混合均匀，混合时间为1h，制得混合料A；Mix the CBN abrasive, Cu60Sn40 powder and Ti powder uniformly according to the composition ratio of a CBN grinding wheel, and the mixing time is 1h to prepare the mixture A;
步骤2，混料：Step 2, mix:
按一种CBN砂轮的成分配比，将辅助粘结剂与混合料A混合通过搅拌混合均匀，搅拌时间为1h，制得混合料B；According to the composition ratio of a CBN grinding wheel, the auxiliary binder is mixed with the mixture A and mixed evenly by stirring, and the stirring time is 1h to prepare the mixture B;
步骤3，烘干：Step 3, drying:
将混合料B加热至75℃，烘干保温时间为1h，按质量比，烘干后的混合料B：烘干前的混合料B＝92％；Heat the mixture B to 75°C, and the drying and holding time is 1h. According to the mass ratio, the mixture B after drying: the mixture B before drying = 92%;
步骤4，过筛：Step 4, sieve:
将烘干后的混合料B过筛，过筛目数为100目，过筛3遍；Sieve the dried mixture B with a mesh number of 100, and sieve 3 times;
步骤5，成型：Step 5, molding:
将过筛后的混合料B，均匀投入模具内，采用液压机冷压成型，压力为75MPa，保压40min，制得磨料圈生坯；Put the sieved mixture B evenly into the mold, and use a hydraulic press to cold-press to form, the pressure is 75MPa, and the pressure is kept for 40min to obtain the green body of the abrasive ring;
步骤6，烧结：Step 6, sintering:
(1)将磨料圈生坯，在惰性气体气氛下烧结，以10℃/min的升温速率，从室温升温至烧结温度960℃，烧结时间30min；(1) The green body of the abrasive ring is sintered under an inert gas atmosphere, and the temperature is raised from room temperature to a sintering temperature of 960°C at a heating rate of 10°C/min, and the sintering time is 30min;
(2)烧结后冷却至≤40℃出炉，制得磨料圈坯体；(2) After sintering, cool to ≤40°C and take out the furnace to prepare the green body of the abrasive ring;
步骤7，粘结：Step 7, Bonding:
用树脂胶粘结剂，将磨料圈坯体与钢芯粘合，去除毛边，修整成型，制得青铜基CBN砂轮。The abrasive ring blank was bonded to the steel core with a resin adhesive, the burrs were removed, and the shape was trimmed to obtain a bronze-based CBN grinding wheel.
实施例4Example 4
一种青铜基CBN砂轮，其包括钢芯、磨料圈，钢芯和磨料圈通过树脂胶粘结剂结合，其中，磨料圈按质量百分比由以下组分制备而成：CBN磨料：35％，金属结合剂：40％，辅助粘结剂：25％，CBN磨料、金属结合剂与辅助粘结剂质量百分比之和为100％；所述的金属结合剂含有成分的质量百分比为：Cu60Sn40粉：60％，Ti粉：40％，Cu60Sn40粉和Ti粉质量百分比之和为100％；磨料圈组成按体积百分比为：CBN磨料35％，金属结合剂28％，孔隙37％，CBN磨料、金属结合剂和孔隙的体积百分比之和为100％；所述的CBN磨料、Cu60Sn40粉和Ti粉的粒径均为200μm；所述的辅助粘结剂为丙烯酸乳液。A bronze-based CBN grinding wheel, which includes a steel core, an abrasive ring, the steel core and the abrasive ring are combined by a resin adhesive, wherein the abrasive ring is prepared from the following components by mass percentage: CBN abrasive: 35%, metal Bonding agent: 40%, auxiliary bonding agent: 25%, the sum of the mass percentage of CBN abrasive, metal bonding agent and auxiliary bonding agent is 100%; the mass percentage of described metal bonding agent containing composition is: Cu60Sn40 powder: 60% %, Ti powder: 40%, the sum of the mass percentages of Cu60Sn40 powder and Ti powder is 100%; the composition of the abrasive circle is: CBN abrasive 35%, metal bond 28%, porosity 37%, CBN abrasive, metal bond The sum of volume percentages of pores and voids is 100%; the particle diameters of the CBN abrasive, Cu60Sn40 powder and Ti powder are all 200 μm; the auxiliary binder is acrylic emulsion.
上述的CBN砂轮的制备方法，包括如下步骤：The preparation method of above-mentioned CBN emery wheel, comprises the steps:
步骤1，混料：Step 1, mixing ingredients:
按一种CBN砂轮的成分配比，将CBN磨料、Cu60Sn40粉和Ti粉混合均匀，混合时间为1h，制得混合料A；Mix the CBN abrasive, Cu60Sn40 powder and Ti powder uniformly according to the composition ratio of a CBN grinding wheel, and the mixing time is 1h to prepare the mixture A;
步骤2，混料：Step 2, mix:
按一种CBN砂轮的成分配比，将辅助粘结剂与混合料A混合通过搅拌混合均匀，搅拌时间为1h，制得混合料B；According to the composition ratio of a CBN grinding wheel, the auxiliary binder is mixed with the mixture A and mixed evenly by stirring, and the stirring time is 1h to prepare the mixture B;
步骤3，烘干：Step 3, drying:
将混合料B加热至75℃，烘干保温时间为1h，按质量比，烘干后的混合料B：烘干前的混合料B＝92％；Heat the mixture B to 75°C, and the drying and holding time is 1h. According to the mass ratio, the mixture B after drying: the mixture B before drying = 92%;
步骤4，过筛：Step 4, sieve:
将烘干后的混合料B过筛，过筛目数为100目，过筛3遍；Sieve the dried mixture B with a mesh number of 100, and sieve 3 times;
步骤5，成型：Step 5, molding:
将过筛后的混合料B，均匀投入模具内，采用液压机冷压成型，压力为75MPa，保压40min，制得磨料圈生坯；Put the sieved mixture B evenly into the mold, and use a hydraulic press to cold-press to form, the pressure is 75MPa, and the pressure is kept for 40min to obtain the green body of the abrasive ring;
步骤6，烧结：Step 6, sintering:
(1)将磨料圈生坯，在惰性气体气氛下烧结，以10℃/min的升温速率，从室温升温至烧结温度960℃，烧结时间30min；(1) The green body of the abrasive ring is sintered under an inert gas atmosphere, and the temperature is raised from room temperature to a sintering temperature of 960°C at a heating rate of 10°C/min, and the sintering time is 30min;
(2)烧结后冷却至≤40℃出炉，制得磨料圈坯体；(2) After sintering, cool to ≤40°C and take out the furnace to prepare the green body of the abrasive ring;
步骤7，粘结：Step 7, Bonding:
用树脂胶粘结剂，将磨料圈坯体与钢芯粘合，去除毛边，修整成型，制得青铜基CBN砂轮。The abrasive ring blank was bonded to the steel core with a resin adhesive, the burrs were removed, and the shape was trimmed to obtain a bronze-based CBN grinding wheel.
实施例5Example 5
一种青铜基CBN砂轮，其包括钢芯、磨料圈，钢芯和磨料圈通过树脂胶粘结剂结合，其中，磨料圈按质量百分比由以下组分制备而成：CBN磨料：45％，金属结合剂：45％，辅助粘结剂：10％，CBN磨料、金属结合剂与辅助粘结剂质量百分比之和为100％；所述的金属结合剂含有成分的质量百分比为：Cu60Sn40粉：50％，Ti粉：50％，Cu60Sn40粉和Ti粉质量百分比之和为100％；磨料圈组成按体积百分比为：CBN磨料42％，金属结合剂38％，孔隙24％，CBN磨料、金属结合剂和孔隙的体积百分比之和为100％；所述的CBN磨料、Cu60Sn40粉和Ti粉的粒径均为200μm；所述的辅助粘结剂为丙烯酸乳液。A bronze-based CBN grinding wheel, which includes a steel core and an abrasive ring, the steel core and the abrasive ring are combined by a resin adhesive, wherein the abrasive ring is prepared from the following components by mass percentage: CBN abrasive: 45%, metal Bonding agent: 45%, auxiliary bonding agent: 10%, the sum of the mass percentage of CBN abrasive, metal bonding agent and auxiliary bonding agent is 100%; the mass percentage of the composition contained in the metal bonding agent is: Cu60Sn40 powder: 50% %, Ti powder: 50%, the sum of the mass percentages of Cu60Sn40 powder and Ti powder is 100%; the composition of the abrasive circle is: 42% CBN abrasive, 38% metal bond, 24% porosity, CBN abrasive, metal bond The sum of volume percentages of pores and voids is 100%; the particle diameters of the CBN abrasive, Cu60Sn40 powder and Ti powder are all 200 μm; the auxiliary binder is acrylic emulsion.
上述的CBN砂轮的制备方法，包括如下步骤：The preparation method of above-mentioned CBN emery wheel, comprises the steps:
步骤1，混料：Step 1, mixing ingredients:
按一种CBN砂轮的成分配比，将CBN磨料、Cu60Sn40粉和Ti粉混合均匀，混合时间为1h，制得混合料A；Mix the CBN abrasive, Cu60Sn40 powder and Ti powder uniformly according to the composition ratio of a CBN grinding wheel, and the mixing time is 1h to prepare the mixture A;
步骤2，混料：Step 2, mix:
按一种CBN砂轮的成分配比，将辅助粘结剂与混合料A混合通过搅拌混合均匀，搅拌时间为1h，制得混合料B；According to the composition ratio of a CBN grinding wheel, the auxiliary binder is mixed with the mixture A and mixed evenly by stirring, and the stirring time is 1h to prepare the mixture B;
步骤3，烘干：Step 3, drying:
将混合料B加热至75℃，烘干保温时间为1h，按质量比，烘干后的混合料B：烘干前的混合料B＝92％；Heat the mixture B to 75°C, and the drying and holding time is 1h. According to the mass ratio, the mixture B after drying: the mixture B before drying = 92%;
步骤4，过筛：Step 4, sieve:
将烘干后的混合料B过筛，过筛目数为100目，过筛3遍；Sieve the dried mixture B with a mesh number of 100, and sieve 3 times;
步骤5，成型：Step 5, molding:
将过筛后的混合料B，均匀投入模具内，采用液压机冷压成型，压力为75MPa，保压40min，制得磨料圈生坯；Put the sieved mixture B evenly into the mold, and use a hydraulic press to cold-press to form, the pressure is 75MPa, and the pressure is kept for 40min to obtain the green body of the abrasive ring;
步骤6，烧结：Step 6, sintering:
(1)将磨料圈生坯，在惰性气体气氛下烧结，以10℃/min的升温速率，从室温升温至烧结温度960℃，烧结时间30min；(1) The green body of the abrasive ring is sintered under an inert gas atmosphere, and the temperature is raised from room temperature to a sintering temperature of 960°C at a heating rate of 10°C/min, and the sintering time is 30min;
(2)烧结后冷却至≤40℃出炉，制得磨料圈坯体；(2) After sintering, cool to ≤40°C and take out the furnace to prepare the green body of the abrasive ring;
步骤7，粘结：Step 7, Bonding:
用树脂胶粘结剂，将磨料圈坯体与钢芯粘合，去除毛边，修整成型，制得青铜基CBN砂轮。The abrasive ring blank was bonded to the steel core with a resin adhesive, the burrs were removed, and the shape was trimmed to obtain a bronze-based CBN grinding wheel.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810749041.9ACN108818331B (en) | 2018-07-10 | 2018-07-10 | Bronze-based CBN grinding wheel and preparation method thereof |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810749041.9ACN108818331B (en) | 2018-07-10 | 2018-07-10 | Bronze-based CBN grinding wheel and preparation method thereof |
| Publication Number | Publication Date |
|---|---|
| CN108818331Atrue CN108818331A (en) | 2018-11-16 |
| CN108818331B CN108818331B (en) | 2020-11-06 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810749041.9AActiveCN108818331B (en) | 2018-07-10 | 2018-07-10 | Bronze-based CBN grinding wheel and preparation method thereof |
| Country | Link |
|---|---|
| CN (1) | CN108818331B (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111604820A (en)* | 2020-05-27 | 2020-09-01 | 中铁隆昌铁路器材有限公司 | A kind of porous steel rail grinding CBN grinding wheel and preparation method thereof |
| CN112497087A (en)* | 2020-11-30 | 2021-03-16 | 柳州华锡有色设计研究院有限责任公司 | Bronze-based diamond grinding wheel with high bending strength and preparation method thereof |
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| EP0179404A2 (en)* | 1984-10-22 | 1986-04-30 | Toyoda Van Moppes Kabushiki Kaisha | Grinding tool |
| CN103465179A (en)* | 2013-09-05 | 2013-12-25 | 宁波大华砂轮有限公司 | Resin rough grinding wheel and preparation method thereof |
| CN105803237A (en)* | 2016-04-22 | 2016-07-27 | 柳州凯通新材料科技有限公司 | A kind of preparation technology of bronze-based diamond grinding wheel sheet |
| CN105834923A (en)* | 2016-04-22 | 2016-08-10 | 柳州凯通新材料科技有限公司 | Processing method of bronze-based diamond grinding wheel |
| CN106625297A (en)* | 2016-11-29 | 2017-05-10 | 磐维科技（青岛）有限公司 | CBN (Cubic Boron Nitride) grinding wheel |
| Publication number | Priority date | Publication date | Assignee | Title |
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| EP0179404A2 (en)* | 1984-10-22 | 1986-04-30 | Toyoda Van Moppes Kabushiki Kaisha | Grinding tool |
| CN103465179A (en)* | 2013-09-05 | 2013-12-25 | 宁波大华砂轮有限公司 | Resin rough grinding wheel and preparation method thereof |
| CN105803237A (en)* | 2016-04-22 | 2016-07-27 | 柳州凯通新材料科技有限公司 | A kind of preparation technology of bronze-based diamond grinding wheel sheet |
| CN105834923A (en)* | 2016-04-22 | 2016-08-10 | 柳州凯通新材料科技有限公司 | Processing method of bronze-based diamond grinding wheel |
| CN106625297A (en)* | 2016-11-29 | 2017-05-10 | 磐维科技（青岛）有限公司 | CBN (Cubic Boron Nitride) grinding wheel |
| Title |
|---|
| 于天彪: "高性能CBN砂轮陶瓷结合剂研究进展", 《金刚石与磨料磨具工程》* |
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111604820A (en)* | 2020-05-27 | 2020-09-01 | 中铁隆昌铁路器材有限公司 | A kind of porous steel rail grinding CBN grinding wheel and preparation method thereof |
| CN112497087A (en)* | 2020-11-30 | 2021-03-16 | 柳州华锡有色设计研究院有限责任公司 | Bronze-based diamond grinding wheel with high bending strength and preparation method thereof |
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| CN108818331B (en) | 2020-11-06 |
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