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Статья. Опубликована в журнале "Chinese journal of mechanical engineering". – 2013. – Vol. 26, No.2.
Авторы: Zhang Guixiang, Zhao Yugang, Zhao Dongbiao, Yin Fengshi, Zhao Zengdian.Статья на английском языке.Название на русском языке: Новый композиционный ферроабразивный сферический материал с карбидом титана для магнитно-абразивной финишной обработки.Аннотация к статье на английском языке: SiC magnetic abrasive is used to polish surfaces of precise, complex parts which are hard, brittle and highly corrosionresistant in magnetic abrasive finishing(MAF). Various techniques are employed to produce this magnetic abrasive, but few can meet production demands because they are usually timeconsuming, complex with high cost, and the magnetic abrasives made by these techniques have irregular shape and low bonding strength that result in low processing efficiency and shorter service life. Therefore, an attempt is made by combining gas atomization and rapid solidification to fabricate a new ironbased SiC spherical composite magnetic abrasive. The experimental system to prepare this new magnetic abrasive is constructed according to the characteristics of gas atomization and rapid solidification process and the performance requirements of magnetic abrasive. The new ironbased SiC spherical composite magnetic abrasive is prepared successfully when the machining parameters and the composition proportion of the raw materials are controlled properly. Its morphology, microstructure, phase composition are characterized by scanning electron microscope(SEM) and Xray diffraction(XRD) analysis. The MAF tests on plate of mold steel S136 are carried out without grinding lubricant to assess the finishing performance and service life of this new SiC magnetic abrasive. The surface roughness(Ra) of the plate worked is rapidly reduced to 0.051 μm from an initial value of 0.372 μm within 5 min. The MAF test is carried on to find that the service life of this new SiC magnetic abrasive reaches to 155 min. The results indicate that this process presented is feasible to prepare the new SiC magnetic abrasive; and compared with previous magnetic abrasives, the new SiC spherical composite magnetic abrasive has excellent finishing performance, high processing efficiency and longer service life. The presented method to fabricate magnetic abrasive through gas atomization and rapid solidification presented can significantly improve the finishing performance and service life of magnetic abrasive, and provide a more practical approach for largescale industrial production of magnetic abrasive.
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CHINESE JOURNAL OF MECHANICAL ENGINEERING Vol. 26,aNo. 2,a2013
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DOI: 10.3901/CJME.2013.02.***, available online at www.springerlink.com; www.cjmenet.com; www.cjmenet.com.cn
New Ironbased SiC Spherical Composite Magnetic Abrasive for Magnetic Abrasive Finishing ZHANG Guixiang 1, 2 , ZHAO Yugang 2, *, ZHAO Dongbiao 1 , YIN Fengshi 2 , and ZHAO Zengdian 3 1 College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China 2 School of Mechanical Engineering, Shandong University of Technology, Zibo 255049, China 3 College of Chemical Engineering, Shandong University of Technology, Zibo 255049, China Received April 19, 2012; revised December 20, 2012; accepted December 26, 2012
Abstract: SiC magnetic abrasive is used to polish surfaces of precise, complex parts which are hard, brittle and highly corrosionresistant in magnetic abrasive finishing(MAF). Various techniques are employed to produce this magnetic abrasive, but few can meet production demands because they are usually timeconsuming, complex with high cost, and the magnetic abrasives made