Wear Resistance Improvement of Equipment for Production of Building Ceramics by Hardfacing with Flux-Coerd Electrodes based on Fe-Ti-B-C System

Abstract

In this work were analyzed factors that leads to wearing of equipment of production engineering, construction, oil and gas, woodworking, tillage industries. Was established that traditional hardfacing materials based on the Fe-Cr-C system are not effective for improvement of abrasion resistance of elements of equipment for production of ceramic building materials due to working conditions. The aim of this work was to increase a durability of that equipment by using of flux cored electrodes with reaction components that provide “in-situ” synthesis, which leads to fine-grained structure of refractory borides and carbides and their solid solutions with increased hardness. Powders of Ti, Mo, B4C and their combinations were used. Structure of the hardfacing coatings were investigated by method of metallography, scanning electron microscopy (SEM). Using of pure metal powders led to forming a fine-grained structure with refractory borides and carbides and their solid solutions. It was investigated that the offered material based on Fe-Ti-Mo-C-B system used for increasing the wear resistance of extruder-screw for production of ceramic building material can increase the TBO period in 2.2-2.4 times in comparison with serial hardfacing materials based on Fe-Cr-C system.

Repair of Worn-Out Parts of Auger Presses by Surfacing Method

“…The experience gained from operating laboratory, pilotscale, and industrial auger presses of various designs, along with data from literature sources [14], has allowed the generalisation of their restoration practices. The presence of abrasive materials, such as mill scale, aspirational dust from steelmaking processes, metallurgical slags, and fine fraction scrap, causes wear on the leading surface of the screw blades, as shown in Fig.…”

“…One important approach for restoring machine parts is the formation of a wear-resistant surface using flux-cored arc welding (FCAW) [12] and wire arc additive methods [13]. Prysyazhnyuk [14] demonstrated the application of an Fe-Ti-Mo-B-C system for repairing auger presses in the ceramic industry. Industrial testing of the clay confirmed the laboratory research results.…”

Effect of Exothermic Addition (CuO - Al) on the Structure, Mechanical Properties and Abrasive Wear Resistance of the Deposited Metal During Self-Shielded Flux-Cored Arc Welding

“…Fe-B-С system flux-cored wire electrode hardfacing technology is used in different industry branches for equipment worn parts reinforcement [32][33][34][35][36]. However, are becoming more widespread by Fe-Cr-B-C and Fe-Ti-Cr-B-C system alloys, which have the best mechanical properties and wear resistance [8, [37][38][39][40][41]. Moreover, these borides are based on the triple alloying system Fe-C-B, allowing to reduce quantity of more expensive, but more wide-spread alloying elements, comprising strengthening phase, such as Cr, Mo, V.…”