陶瓷颗粒增强BTMCr26复合材料制备及热处理工艺研究  

Research on Preparation and Heat Treatment Process of Ceramic Particle Reinforced BTMCr26 Composites

作　　者：史义明 陈铁军 刘佳利 钱兵 吴贞林 曾红斌 孙书刚 李娜 SHI Yi-ming;CHEN Tie-jun;LIU Jia-li;无(Huaneng(Guangdong)Energy Development Co.,Ltd.Haimen Power Plant;Nantong Gaoxin Anti-wear Materials Technology Co.,Ltd.;Nantong Institute of Technology)

机构地区：[1]华能(广东)能源开发有限公司海门电厂 [2]南通高欣耐磨科技股份有限公司 [3]南通理工学院

出　　处：《电站系统工程》2024年第5期63-66,共4页Power System Engineering

摘　　要：陶瓷颗粒增强铁基复合材料具有金属和陶瓷的双重优点,是延长辊套、衬板使用寿命的有效途径。采用负压铸渗法制成1~1.5 mm的ZTA颗粒(ZrO_(2)增韧Al_(2)O_(3))增强BTMCr26(ZTAp/HCCI)复合材料,并分别在920℃、980℃、1040℃和1080℃下进行淬火,优选出最佳淬火温度后,分别在200℃、300℃、400℃和500℃下进行回火,研究热处理工艺对复合材料微观组织及三体磨料磨损性能的影响。结果表明:经1040℃淬火+400℃回火后的BTMCr26复合材料基体组织为回火马氏体、残留奥氏体、共晶碳化物及二次碳化物,BTMCr26基体区和复合区基体的硬度达到最高值,三体磨损试验累计体积损失最小值。采用该工艺制备的磨煤机辊套及衬板磨损量最大约0.8 mm/m,寿命约为BTMCr26材质的2.5~3倍。Ceramic particle reinforced iron matrix composite has the double advantages of metal and ceramic,and it is an effective way to prolong the service life of roll sleeve and liner.1~1.5mm ZTA particle(ZrO_(2) toughened Al_(2)O_(3))reinforced BTMCr26(ZTAp/HCCI)composites were prepared by negative pressure casting infiltration method.The composites were quenched at 920,980,400 and 1080℃respectively.The optimum quenching temperature was selected and tempered at 200,300,400,500℃.The effects of heat treatment on the microstructure and three-body abrasive wear properties of the composites were studied.The results show that the matrix microstructure of BTMCr26 composites after quenching at 1040℃and tempering at 400℃is tempered martensite,retained austenite,eutectic carbide and secondary carbide.The hardness of matrix in BTMCr26 matrix and composite zone is the highest,and the cumulative volume loss in three-body wear test is the minimum.The wear amount of the roller sleeve and liner of the coal mill prepared by this process is about 0.8mm/m,and the service life is about 2.5~3 times of that of BTMCr26 material.

关 键 词：ZrO_(2)增韧Al_(2)O_(3) 高铬铸铁 复合材料 热处理 三体磨料磨损 

分 类 号：TK311[动力工程及工程热物理—热能工程]