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2/2015 vol. 60
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ORIGINAL PAPER
Heat treatment and thermochemical treatment of tool steel
A. Bartkowska 1
,
 
M. Popławski 1
,
 
D. Przestacki 2
 
 
 
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1
Institute of Materials Science and Engineering, Poznan University of Technology, pl. M. Skłodowskiej-Curie 5, 60-965 Poznań, Poland
 
2
Institute of Mechanical Technology, Poznan University of Technology, pl. M. Skłodowskiej-Curie 5, 60-965 Poznań, Poland
 
 
Journal of Research and Applications in Agricultural Engineering 2015;60(2):9-11
 
Article (PDF)
References (18)
 
KEYWORDS
diffusion boronizing
microstructure
microhardness
agricultural tools
 
ABSTRACT
The paper presents results of studies of the influence of substrate heat treatment on microstructure and microhardness of boronized tool steels. Diffusion boronizing treatment process was carried out using boronizing powder at temperature of 900ºC for 5 h. After boronizing the microstructure of surface layer was composed of needle-like iron borides. The micro-hardness in the boronized layer was about 1800 HV0,1. The appropriate heat treatment with diffusion boronizing process provides good properties of tool steels such as high hardness, and also good cohesion between subsurface layer and the substrate. This is very important for increasing longevity of tools and parts of machines as tools covered with a resultant boronized layer which can be successfully used in agricultural machines.
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