Hydrogen, due to corrosion processes, can degrade high strength steels (HSS) through embrittlement and stress cracking mechanisms. Scanning Kelvin probe (SKP) mapping of surface potential was applied, visualize the locations with an increased subsurface concentration hydrogen in mild steel martensitic HSS. This work help determine reasons behind localization a microstructure, leading hydrogen-a...

ABSTRAK Proses pembubutan merupakan proses pemotongan atau pengurahan suatu bahan dengan menggunakan mesin bubut. pada baja karbon akan menghasilkan dampak bagi sifat mekanik dari tersebut, terutama kekasaran permukaan dan juga kekerasannya. Penelitian ini bertujuan untuk mengetahui nilai kekerasan Baja Karbon. Spesimen yang digunakan dalam penelitian adalah ST 41. mata pahat HSS sudut pengasah...

Studies involving the mechanical properties of high-strength steel (HSS) at elevated temperatures have received considerable attention in recent years. However, current research on HSS high is lacking. As a result, design fire-protective structures with standards not sufficiently conservative or safe. This study investigates effect that ASTM A572 Gr. 50 and 60 steels. Reduction factors for yiel...

Surface quality of solid wood products is an important subject of study since it influences further manufacturing processes, such as finishing or strength of adhesive joint. In this study, the surface quality of the machined surfaces was evaluated through the cutting distance, which is defined as the accumulated linear meters of wood processed by a cutting tool. The roughness (Rz) and wetting (...

This paper is concerned with optimization of surface roughness when drilling of stainless steel SS304 with HSS drill. This study included drilling of SS304 with supply of Sic abrasive having grain size 650 and 1250 mesh size through abrasive slurry system. Abrasives not only used for cooling purpose but also increases the surface finish, MRR and reduce tool wear. Experiments were conducted on a...

M42 HSS (W 2 Mo 9 Cr 4 VCo 8 ) is widely used as a high cobalt super-hard high-speed steel (HSS) for various cutting tool materials, but does not bring good economic benefits. In this paper, the effects of Si and Al on organization mechanical properties low were investigated. The microstructure was analyzed by OM, SEM, EDS, XRD, etc. Rockwell hardness test, impact toughness test flexural streng...

Tool health monitoring (THM) is in great focus nowadays from the perspective of predictive maintenance. It prevents increased downtime due to breakdown maintenance, resulting reduced production cost. The paper provides a novel approach tool computer numeric control (CNC) machine for turning process using airborne acoustic emission (AE) and convolutional neural networks (CNN). Three different wo...