Chen Sihan,Li Jihang,Zhang Hao,et al.Regulation of Composition, Microstructure and Properties of Novel Steel Used for Blade of Scrap Steel Shearing Machine[J].Special Steel,
Chen Sihan,Li Jihang,Zhang Hao,et al.Regulation of Composition, Microstructure and Properties of Novel Steel Used for Blade of Scrap Steel Shearing Machine[J].Special Steel,DOI:.
Regulation of Composition, Microstructure and Properties of Novel Steel Used for Blade of Scrap Steel Shearing Machine
In this study, H13 hot work die steel, which is widely used in the blade of scrap steel shearing machine, is used as the benchmark material, and the alloy design strategy of “reducing Si, V and increasing W” is put forward. The influence of alloying element content on carbide precipitation behavior in H13 die steel was investigated, and the influence of heat treatment process on the microstructure and mechanical properties of experimental steel was systematically stud
ied. The results show that after the contents of
w
[Si],
w
[V] and
w
[W] are controlled in the ranges of 0.1%-0.3%, 0.5%-0.6% and 1.8%-2.2%, respectively, under the optimal heat treatment process, the hardness of the new steel is basically the same as that of H13 steel, but the impact toughness is twice that of H13 steel, and it shows excellent thermal stability and friction-wear properties. This study successfully developed a DPG20 hot work die steel specifically for the blade of scrap steel shearing machine, which exhibited excellent mechanical properties.
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