Preparation method for semi-high speed steel
A semi-high-speed steel, forging and rolling technology, which is applied in the field of semi-high-speed steel preparation, can solve the problems of poor sharpening, low sharpness, and reduce the cost of the alloy amount of the blade steel, and achieves low cost, improved finish, and reduced material cost. The effect of process cost
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[0021] The semi-high-speed steel copper-brazing steel-inlaid paper cutting blade prepared by the semi-high-speed steel of this embodiment, the paper-cutting blade is made by semi-high-speed steel 1 through copper brazing and welding on the cutter body 3, the composition of the semi-high-speed steel 1 As follows: It is composed of the following chemical elements in weight percentage: C: 0.66-0.7%, Si: 0.35-0.5%, Mn: 0.3-0.42%, Cr: 5.5-7%, W: 1.5-2.7%, Mo: 4.5~5%, V: 1~1.2%, Nb: 0.13~0.21%, Co0.5~0.55%, S≤0.01%, P≤0.02%, the rest is Fe;
[0022] Its concrete preparation method is as follows:
[0023] (1) Production of semi-high-speed steel:
[0024] First prepare semi-high-speed steel, adopt induction electric furnace or induction electric furnace+electroslag remelting to smelt semi-high-speed steel, meet the semi-high-speed steel of the present invention and be made up of as follows: the chemical element of weight percentage content: C: 68~0.7%, Si: 0.48~0.5%, Mn: 0.31~0.38%,...
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