熔渗法制备陶瓷/金属结合剂CBN砂轮及磨削性能研究  

Preparation and Performance of Ceramic/Metal Bonded CBN Grinding Wheel by Melt Infiltration

作　　者：陈日月[1] 贺洛霆 周仁宸 刘小磐[2] CHEN Riyue;HE Luoting;ZHOU Renchen;LIU Xiaopan(Guangdong Institute of Light Industry Technicians,Guangzhou 510320,Guangdong,China;Materials Science and Engineering,Hunan University,Changsha 410082,Hunan,China)

机构地区：[1]广东省轻工业技师学院,广东广州510320 [2]湖南大学材料科学与工程学院,湖南长沙410082

出　　处：《陶瓷学报》2022年第2期247-254,共8页Journal of Ceramics

基　　金：国家自然科学基金(751229124);广西重点研发计划项目(20159010);武汉理工大学材料复合新技术国家重点实验室开放基金(2021-KF-6)。

摘　　要：通过改变尿素造孔剂的添加量制备了不同孔隙率的陶瓷结合剂CBN砂轮坯体,再以CuSn;为熔渗剂制备了陶瓷/金属复合结合剂CBN砂轮,并将复合结合剂CBN砂轮应用于INCONEL713系镍基高温合金叶片轴的外圆沟槽磨削。结果表明:随着尿素造孔剂添加量的增加,多孔陶瓷结合剂CBN砂轮坯体的气孔率不断升高,经过CuSn_(33)熔渗后制备的陶瓷/金属结合剂CBN砂轮样品的气孔率随着造孔剂添加量的增加呈现先下降后上升的趋势,当尿素造孔剂添加量为20 wt.%时,熔渗后样品的抗弯强度达到最大值184.2 MPa。采用熔渗法制备的陶瓷/金属结合剂CBN砂轮磨削加工INCONEL713系镍基合金零件时,陶瓷/金属结合剂CBN砂轮的形状保持性好,加工工件的表面粗糙度R_(a)值低于陶瓷结合剂CBN砂轮加工零件的值,其使用寿命达到了陶瓷结合剂CBN砂轮的2.3倍。Ceramic bonded CBN grinding wheels with different porosities were prepared by changing the content of pore forming agent urea with CuSn_(33) as the melt infiltration agent.The ceramic/metal bonded CBN grinding wheels were then applied to grinding the outer groove of INCONEL713 nickel-based superalloy blade shaft.With increasing content of urea pore-making agent,porosity of the porous ceramic binder CBN grinding wheel body increased continuously,while porosity of the ceramic/metal binder CBN grinding wheel sample prepared with CuSn_(33) melt infiltration decreased first and then increased.When the content of urea pore-forming agent was 20 wt.%,the bending strength of the sample reached the maximum value of 184.2 MPa after melt infiltration.When grinding INCONEL713 nickel-based alloy parts,the shape and size deformation of ceramic/metal bonded CBN wheel were small,the surface roughness(R_(a))value of the work piece was lower than that of the ceramic bonded CBN wheel,whereas the service life of the ceramic bonded CBN wheel was 2.3 times that of the ceramic bonded CBN wheel.

关 键 词：陶瓷/金属结合剂 CBN 熔渗法 CuSn 磨削性能 

分 类 号：TQ174.75[化学工程—陶瓷工业]