Semi-high-speed steel
A semi-high-speed steel, weight percentage technology, applied in the field of semi-high-speed steel, can solve the problems of low sharpness, poor sharpening performance, etc., and achieve the effect of improving the finish, low cost, and high secondary hardening and tempering hardness
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[0019] The present invention will be further described below in conjunction with embodiment:
[0020] A semi-high-speed steel composed of the following chemical elements in weight percentage: C: 0.56-0.65%, Si: 0.40-0.60%, Mn: 0.25-0.40%, Cr: 6.0-6.8%, W: 1.6-2.5% %, Mo: 4.2-5.2%, V: 0.7-0.9%, Nb: 0.1-0.2%, Co0.3-0.4%, S≤0.02%, P≤0.025%, and the rest is Fe.
[0021] Further, it is composed of the following chemical elements in weight percentage: C: 0.58-0.62%, Si: 0.48-0.52%, Mn: 0.28-0.38%, Cr: 6.12-6.60%, W: 1.82-2.28%, Mo: 4.45~4.94%, V: 0.76~0.81%, Nb: 0.13~0.16%, Co or Ni: 0.32~0.38%, S≤0.02%, P≤0.025%, and the rest is Fe.
[0022] The preparation steps of a semi-high-speed steel copper brazing inlaid steel paper cutting blade are as follows:
[0023] (1) Production of semi-high-speed steel blade steel: use induction furnace or induction furnace to produce semi-high-speed steel blade steel through electroslag remelting. The semi-high-speed steel blade steel is composed ...
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