Abrasive wear resulting from the microclastic rock is a common failure phenomenon in drilling environment that often limits sealing ability and service life of seals. In this study, friction process fluoro rubber (FKM) seals against 304 stainless steel (SS304) after one single entry SiO2 abrasives were investigated. The influence changes particle state on coefficient evolution, loss morphologie...

Single and multipass two-body and three-body abrasive wear behaviour of various polyaryletherketone composites have been carried out by using a pin-on-disc machine and a rubber wheel abrasion test (RWAT) rig. Abrasive wear studies were conducted under different loads and sliding distances. Comparative wear performance of all the composites at different loads shows that specific wear rate (Ko) o...

Background and Objectives : Ethylbenzene (EB) is a dangerously organic compound which the presence of this pollutant in water solutions can be considered as an environmental and public health hazard. In this study, nano magnetic particles (Fe 3 O 4 ) were used as an adsorbent to remove ethylbenzene from aqueous solutions. Methods : The specification of the adsorbent was investigated by transmis...

magnetic nanoparticles attracted a great deal of attention in the medical applications due to their unique properties. the most exceptional property of magnetic particles is their response to a magnetic force, and this property has been utilized in applications such as drug targeting, bioseparation, contrast agents in magnetic resonance imaging (mri) and heating mediators for cancer therapy. in...

An experimental study of the rotary ultrasonic drilling of ceramics is first presented. The influence of different process parameters on the material removal rate for machining of magnesia stabilized zirconia is examined. Then a mechanistic approach to modeling the material removal rate during rotary ultrasonic drilling of ceramics is proposed and applied to predicting the material removal rate...

Due to the fact that abrasive media can deform flexibly in abrasive flow machining (AFM) making this method easily to polish the complex holes and the curved surface of the hard machining shapes. Although abrasive media dominate the polishing behavior in AFM process, the mechanism of the abrasive media are not easy to understand because of the high viscous gels, therefore, many finishing works ...

Ordinary diamond presents the disadvantages of poor self-sharpening and concentrated grinding stress when it is used as an abrasive. Moreover, this kind cannot be well wetted by vitrified bond, resulting in a lower holding force binder to abrasives (i.e., easy detach from matrix during grinding). These comprehensive factors not only reduce surface quality processed workpiece, but also hinder pr...

The National Institute for Occupational Safety and Health (NIOSH) investigators compared methods for collecting personal breathing zone (PBZ) air samples for particulates during abrasive blasting at a shipyard. Abrasive blasting is the cleaning or finishing of surfaces by the use of an abrasive carried in a strong current of air. The U.S. government has provided regulatory requirements and guid...

Hardest 10. Diamond he selection of abrasive media for blast cleaning steel is based primarily on two broad objectives, quality and economics. Quality is defined in terms of appearance after cleaning (SSPC-SP 7, 6, 10, and 5 ) , profile depth and contour, and chemical cleanliness. The economics of an abrasive is determined by its initial cost and by the production rate that can be achieved when...