The paper presents the results of tests wear hardened wear-resistant steels in presence quartz, coal and coal-mineral abrasives a differentiated ratios each component case without abrasives. were carried out on ring-on-ring test stand. Volume loss was parameter used to characterize level. Based Scanning Electron Microscopy (SEM) observations, different mechanisms surface destruction depending t...

Carbon fiber reinforced plastics (CFRP) have good physical properties, such as high specific strength and high specific modulus. However, cutting delamination, tearing and burr, etc. often occur in the machining process of CFRP, which results in the uncontrollability of machining surface quality and serious tool wear. In this paper, milling of CFRP with a staggered cutter was carried out, the c...

The use of hard and brittle material has become increasingly more extensive in recent years. Therefore processing of these materials for the parts fabrication has become a challenging problem. However, it is time-consuming to machine the hard brittle materials with the traditional metal-cutting technique that uses abrasive wheels. In addition, the tool would suffer excessive wear as well. Howev...

B4C ceramic particulate–reinforced Al 5083 matrix composite with various B4C content was fabricated successfully via hot-press sintering under Argon atmosphere. B4C particles presented relative high wettability, bonding strength and symmetrical distribution in the Al 5083 matrix. The hardness value, friction coefficient and wear resistance of the composite were higher than those of the Al 5083 ...

Prikaz stanja The first medical applications of this technology were published in the eighties of the last century [1], when a jet of water [6, 7, 8, 9] was used for cutting soft tissues [1, 2]. There are currently no available relevant studies exploring in detail the use of abrasive waterjet cutting in orthopaedic surgery for the implantation and re-implantation of total hip and for knee repla...

L. Dahil, Istanbul Arel University, Department of Mechanical and Metal Technologies, Turkey, İ. Dahil, Ministry of Education, Istanbul Provincial Administration of Education, Turkey A. Karabulut, AfyonKocatepe University, Faculty of Technology, Mechanical Engineering, Turkey Since competition has risen in the manufacturing methods of present conditions, the chance of competition has lost in the...

Cutting or welding heavy metal requires higher laser output power than virtually any other type of materials processing application. In the oil industry, an important heavy metal cutting application is creating the slotted liners used to separate oil from well sediments such as sand and gravel. Traditionally, this was done with diffusion-cooled CO2 slab lasers, but now, kilowatt-class fiber las...