-Hardfacing is one of the most useful and economic ways to improve the performance of components submitted to severe wear conditions. A study was made to compare the microstructure and abrasion resistance of hardfacing alloys reinforced with primary chromium carbides, the hardfacing alloys were deposited onto M.S. plate by SMAW process. Two different commercial hardfacing electrodes were employ...

Hardfacing alloys are weld deposited to provide a wear resistant surface for stmctural base materials. Commercial low cobalt hardfacing alloys are being evaluated to reduce plant activation levels. Since hardfacing alloys typically must be resistant to cracking to assure adequate in service performance, fracture toughness is a ~ critical material property. Fracture toughness (KJ measurements of...

I. Pernis, J. Kasala, Alexander Dubček University of Trenčin, Faculty of Special Technology, Trenčin, Slovakia, D. Žabecká, Technical university of Košice, Faculty of Metallurgy, Košice, Slovakia The paper deals with the tribological properties of investigated types of hardfacing materials at erosive wear process. Infl uence of impact angle of abrasive grains on wear resistance and microhardnes...

This paper presents the use of the Taguchi-regression method in developing the optimal plasma transferred arc welding (PTAW) process for obtaining high hardfacing quality characteristics. An “optimal” process means that the best performance characteristic would be produced while the least number of process parameters are involved. In the experimental tests, the surface hardening process is cond...

This paper aimed to identify the optimal conditions for welding hardfacing by applying Response Surface Methodology (RSM). The heat input, electrode type, and layer on wear resistance of were all optimized using Box-Behnken experimental design. findings revealed that these three variables had an impact volume loss hardfacing. Because high coefficient determination, data obtained a quadratic equ...

The microstructure and wear resistance of Stellite 6 alloy hardfacing layer at two different temperatures (room temperature and 300°C) were investigated by plasma arc surfacing processes on Q235 Steel. Tribological test was conducted to characterize the wear property. The microstructure of Stellite 6 alloy coating mainly consists of α-Co and (Cr, Fe)7C3 phases. The friction coefficient of Stell...

Dalam proses produksi batubara pada PT. Ganda Alam Makmur, alat yang digunakan dalam crushing yaitu feeder breaker sering mengalami berbagai masalah salah satunya adalah terjadi keausan pick breaker. Oleh karena itu, pemeliharaan atau diperlukan sesuai jadwal dan tidak terjadwal untuk memaksimalkan kinerja seluruh mesin agar dapat beroperasi secara maksimal. Pada dasarnya sangat dibutuhkan meng...

Hardfacing is an efficient and economical surfacing technique widely used by heavy industries to remediate worn components in service or enhance the component’s wear characteristics prior use. Efficient hardfacing for any targeted application requires precise consideration understanding of deposition process, consumables, substrates. It also essential understand process variables issues that ca...