This work evaluated the influence of titanium carbo-nitride (TiCN), chromium aluminum nitride (CrAlN), and boron (BCN) coatings deposited on AISI 1045 steel their behavior in fatigue life. Suitable deposition parameters were established to obtain appropriate times for polycrystalline growth desired stoichiometry, as well a stable layer thickness ~ 3 ?m. The physical chemical properties obtained...

The welding process is a permanent connection for metal materials using heat energy. GTAW (Gas Tungsten Arc Welding) method carried out on AISI 1045 steel material with solid round shape, which has the characteristics and properties of slightly above low carbon steel. was based AWS A5.18 standard specifications, in this study. by varying amperage between 70, 90, 110 amperes as well ER70S-G seri...

silica refractory bricks are used especially in the metallurgical industries, due to desirable properties suchas high melting point, rigidity, and high temperatures strength. in this research, different amount of sicwere added to silica refractory containing different binders such as borax, boric acid, calcium nitride,sodium tri poly phosphate, sodium hexa meta phosphate (shmp) and lime. physic...

This work investigates the machining characteristics of American Iron and Steel Institute (AISI) D2 tool steel with copper as a tool electrode during electrical discharge machining (EDM) process. The multi wall carbon nano tube (MWCNT) is mixed with dielectric fluids in EDM process to analyze the surface characteristics of surface roughness. Regression model were developed to predict the surfac...

This study was attempted to develop a process model, using the temperature values measured by the coupled infrared temperature measurement system (pyrometer and camera) correlated with the measured values of case depth hardness of the tool steel AISI S7 (hypoeutectoid steel) for the specified multi-pass laser heat treatment conditions (1000–2500 J). A number of heat treatment experiments by cha...

One of the most important challenges for every machining shopfloor, especially a small one, is to achieve required productivity with minimal energy consumption and engaged power. The paper presents way determine optimal combination values cutting parameters such as depth cut, feed rate speed from range their recommended values, which are usually additionally limited by real conditions available...

Diffusion bonding of hardmetals (WC-Co) to themselves or with other metallic material (mildsteel) has been evaluated in the present paper. Metallographic studies and mechanical tests have been used to determinate the influence of the bonding parameters (temperature, pressure and time) on the bond microstructure and strength. Different metallic interlayers applied in form of thick foils were use...

In this study the effects of surface texture on the fatigue life of a high-strength low-alloy steel were evaluated in terms of the apparent fatigue stress concentration. An abrasive waterjet was used to machine uniaxial dogbone fatigue specimens with specific surface quality from a rolled sheet of AISI 4130 CR steel. The surface texture resulting from machining was characterized using contact p...