RESEARCH OF PROCESS OF WEAR OF KNIVES IS FORCUTTING OF WIRE
DOI:
https://doi.org/10.20535/2305-9001.2014.70.35231Keywords:
knives, cutting of wire, cutting edges, superficial strengthening, burr, fractography researchesAbstract
Purpose. For research of features of process of wear, description of mechanisms of wear, determination of parameters of process of wear it is important to undertake a fractography study of knives for cutting of wire. The aim of the article is generalization of results of fractography and x-ray photography structural researches of knives for cutting of wire, that is made from different materials, superficially fortified in number of different ways and worked the determined amount of cycles.
Design/methodology/approach. Cutting of wire diameter a 1 mm took place in a stamp-automat that has overhead movable and lower immobile knives. For research of features of process of wear, description of mechanisms of wear, determination of parameters of process of wear fractography studies of knives were undertaken. There were investigational standards with different strengthening superficial treatment.
Findings. The got dependences of height and area of zone of wear are on the absolute value of burr at the different types of strengthening treatment of cutting edges of knives. The got dependences of specific height and specific area of zone of wear are on the mean value of hardness of knives the cutting edges of that are fortified by the different types of the combined treatment.
Originality/value. Job performances it maybe to apply for research of features of process of wear, description of mechanisms of wear, determination of parameters of process of wear of cutting edges with different strengthening treatment.References
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