This study explores the use of powder plasma transferred arc welding (PPTAW) as a surface layers deposition technology to form hardfaced coatings improve upon wear resistance non-alloy structural steel. Hardfaced layers/coatings were prepared using PPTAW process with two different wear-resistant powders: PG 6503 (NiSiB+60% WC) and PE 8214 (NiCrSiB+45% WC). By varying parameters gas flow rate (P...

In this study, the changes in microstructure of HP-Nb cast heat resistant steel after 8 years of service at high temperatures were investigated. Study of microstructure using optical microscopy (OM) and scanning electron microscopy (SEM) equipped with an energy dispersive spectrometry (EDS) showed that the microstructure of this steel in as-cast condition includes an austenitic matrix, and that...

Godrej Security Solution Division has developed bullet resistant solutions like Bullet resistant doors, Mantraps, Bullet resistant screening for banks, and bullet resistant cabins etc which are designed as per the requirements mentioned in various standards like National institute of Justice (NIJ), Underwriters Laboratory (UL), etc. These agencies have established the performance criteria and c...

This paper reports results of in-house experimentation on heat treatment and mechanical testing of H13 tool steel. Heat treatment strategy practiced by the industry is described in detail. Effect of various types of heat treatment on fracture toughness, hardness and other mechanical properties is also analyzed. It was found that toughness (expressed in terms of plane-strain fracture toughness K...

aqueous polymer quenchants are being used increasingly in steel heat treatment industries as a substitution for conventional quenchants. by adjusting the quench parameters of the polymeric media, it is possible to achieve desirable microstructure and mechanical properties in addition to reduction in distortion and cracking. in this work, polyalkylene glycol (pag) aqueous solution was used as th...

The electrochemical behaviour for passivation of new alloy corrosion-resistant steel Cr10Mo1 immersed in alkaline solutions with different pH values (13.3, 12.0, 10.5, and 9.0) and chloride contents (0.2 M and 1.0 M), was investigated by various electrochemical techniques: linear polarization resistance, electrochemical impedance spectroscopy and capacitance measurements. The chemical compositi...

complex heat transfer phenomena (including unsteady state conduction, convection and solidification processes) occur in steel belt conveyer sulfur granulating method. numerical simulation of this technique is performed via a comprehensive and multifaceted one dimensional model. since the air situated between the adjacent sulfur pastilles is essentially stagnant, therefore, the surface temperatu...

Abstract This study explores the use of powder plasma transferred arc welding (PPTAW) as a surface layer deposition technology to form hardfaced coatings improve upon wear resistance mild steel. Hardfaced layers were prepared using PPTAW process with two different wear-resistant powders: PG 6503 (NiSiB + 60% WC) and PE 8214 (NiCrSiB 45% WC). By varying parameters gas flow rate (PGFR) current, p...

Purpose. Investigate the effect of complex microalloying with nitrogen, titanium and aluminum on structure properties cast steels at elevated temperatures. Methodology. Methods optical microscopy were used for metallographic analysis microstructure steels. The mechanical room temperatures determined static tension, crease impact bending. Results. technology carbonitride strengthening silicon-ma...

The influence of heat processing conditions on the experimental steel resistance to carbon dioxide corrosion for Fe-V-Si alloying system in a model CO2-containing operating environment, is viewed. Findings alloy structural, mechanical and characteristics, giving that it had new constitution, can be great importance development grades production oilfield casing tubular goods, resistant environment