Surface quality including surface roughness and edge chipping is a key process measure in micro ultrasonic machining (Micro-USM) as an efficient process for micromachining of hard and brittle materials. Process parameters such as ultrasonic vibration amplitude, static load, type of tool material, type and size of abrasive particles and slurry concentration can influence the surface quality. How...

BACKGROUND The present study aimed to develop an in vitro model for stain removal from natural enamel for the assessment and comparison of oral hygiene products. METHODS Bovine teeth (n = 8 per group) were ground/polished to provide flat enamel specimens and ferric-tannate deposits were precipitated onto the enamel surfaces. The ferric-tannate stained enamel specimens were brushed using an in...

Production of abrasive materials includes the stages: covering of abrasive material with wetting agent, addition of binder, i.e. the filler with the binding material, mixing of the components, stabilization to achieve homogeneity of composition, and hardening. The most important processes affecting the properties of the final product are: the coverage of the abrasive materials, mixing, and prop...

metal matrix composites have been widely used in industries, especially aerospace industries, due to their excellent engineering properties. however, it is difficult to machine them because of the hardness and abrasive nature of reinforcement elements like silicon carbide particles (sicp).in the present study, an attempt has been made to investigate the influence of spindle speed (n), feed rate...

Surface quality including surface roughness and edge chipping is a key process measure in micro ultrasonic machining (Micro-USM) as an efficient process for micromachining of hard and brittle materials. Process parameters such as ultrasonic vibration amplitude, static load, type of tool material, type and size of abrasive particles and slurry concentration can influence the surface quality. How...

In magnetic abrasive finishing (MAF), abrasive grains as a tool move on surface and can remove chip from surface of work piece. In this study AL 6061 tube was considered as the work piece and the effect of finishing parameters such as gap distance between tube and poles, rotational speed of tube, abrasive ration and finishing time on surface roughness was investigated. The mixture of ferromagne...

In magnetic abrasive finishing (MAF), abrasive grains as a tool move on surface and can remove chip from surface of work piece. In this study AL 6061 tube was considered as the work piece and the effect of finishing parameters such as gap distance between tube and poles, rotational speed of tube, abrasive ration and finishing time on surface roughness was investigated. The mixture of ferromagne...

In transport of raw materials abrasive wear resistance is a requirement, which can be met with alumina ceramics. At certain locations additional impact load occurs, exacerbating the loss. As literature on impact-abrasive ceramics scarce this topic will researched in work. We selected variety commercial (90–96% Al2O3) and according to much more resistant – substantially expensive Zirconia Toughe...

In order to realize the uniform distribution in abrasive flow polishing of titanium alloy workpiece with curved surface, a novel method based on liquid metal-abrasive machining technology is proposed this study. Based SST k - ? model, Preston model and fluid particle tracking COMSOL software employed study dynamic characteristics under different AC electric field conditions, two-phase used simu...

0 Throughout the world a lot of ammunition is stored which concentrate expensive material that is unused and unutilised. Ammunition significantly represents potential risk to human and their environment. According to analysis made by [1, 2] it has been found, that discarded munitions are destroyed by using conventional techniques such as dumping at sea, outdoors burning and detonation, mining d...