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Content available remote Comparison of abrasion resistance of selected constructional materials
EN
Purpose: The aim of this work was to define and compare abrasion resistance of selected constructional materials widely used in the industry. Chromium cast iron wear resistant plates were compared with typically used wear resistant plates made from Hardox 400 steel and two different, wear resistant, materials cladded by welding technologies. Design/methodology/approach: The tests of abrasive wear were conducted in accordance to procedure “A” of standard ASTM G 65 - Standard Test Method for Measuring Abrasion Using the Dry Sand/Rubber Wheel Apparatus. Findings: Abrasion resistance tests shows that the best properties among investigated samples has chromium cast iron plate. Abrasion wear resistance of this plate is two times higher than wear resistance of layer made by welding technologies and nine times higher than typical Hardox 400 steel plate. Practical implications: Application, of abrasion resistant materials, results in significant material and economy savings, due to wear and costs reduction (decreasing stop times needed to change worn parts for a new one). Originality/value: Wear plates are modern solution in regeneration of worn machines parts and also for producing a new parts which connect high wear and abrasion resistance with costs reduction.
2
Content available remote Robotized GMA surfacing of cermetalic layers
EN
Purpose: Purpose of these researches was to investigate of influence of heat input in robotized surfacing on quality and properties of cermetalic layers. Design/methodology/approach: The quality of single and multilayer, stringer and weave beads was assessed by abrasion resistance tests according to ASTMG65 standard, erosion resistance tests according to G76 standard, metallographic examinations and hardness tests. Findings: Due to the fact that the it was used robotized surfacing stand, the analysis of properties of the deposits was performed for single and multilayer, stringer and weave beads. Research limitations/implications: For complete information about tested wear plates it is needed to compare theirs properties with others presented technologies of wear plates producing. Practical implications: Results of this paper is to optimal range of parameters of surfacing of single and multilayer, stringer and weave beads of cermetalic layers. Originality/value: The researches (hardness tests, abrasion and erosion resistance tests) were provided for surfacing of single and multilayer, stringer and weave beads, and the results were compared. The influence of heat input on layers properties and theirs structure was defined.
3
Content available remote Comparison of chromium cast iron deposits of wear plates
EN
Purpose: of these researches was to compare of chromium cast iron wear plates deposits properties. Design/methodology/approach: : the quality of wear plates was assessed by low-stress abrasion resistance to metal-ceramic scratching by means dry quartz sand as the abrasion material tests according to G65 standard, erosion resistance tests according to G76 standard, metallographic examinations and hardness tests. Findings: due to the fact that the wear plates were produced by overlap weave beads surfacing method, the analysis of properties of the plates was performed in the middle area of deposits as well as overlap beads area. Research limitations/implications: for complete information about tested wear plates it is needed to compare theirs properties with others presented plates Practical implications: results of this paper is to increase quality of wear plates and comparison of properties of wear plates produced by different producers. Originality/value: the researches (hardness tests, abrasion and erosion resistance tests) were provided in the middle area of deposits and also in overlap area, the results were compared.
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