High-plasticity corrosion-resistant temperature-resistant pre-hardening plastic die steel and preparation method thereof
A plastic mold steel, warm pre-hardening technology, applied in the field of plastic mold steel products, can solve the problems of low service life, many surface defects, poor wear resistance, etc., to improve quality, improve organizational structure, and significantly strengthen and toughen Effect
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[0013] The percentage by weight of each component in the mold steel of this embodiment is: C: 0.3%, Si: 0.4%, Mn: 1.2%, Mo: 0.6%, V: 0.01%, Cr: 2.2%, Ti: 0.04%, B ≤0.003%, P≤0.02%, S≤0.01%, compound modifier: 0.01%, the rest is Fe and unavoidable impurities.
[0014] Wherein the composite modificator is made of the following raw materials in parts by weight: nano-rare earth oxide 2, nano-tungsten carbide 8, an appropriate amount of absolute ethanol, and PEG-4000.1; the preparation method is: first dissolve PEG-400 in absolute ethanol, Then put in nano-rare earth oxides, ultrasonically stir for 40 minutes, add nano-tungsten carbide after it is completely dispersed, continue ultrasonically stirring and mixing for 1 hour, and dry in a 300°C oven after stirring. After complete drying, the powder is fully ground and dispersed to obtain A composite modifier of rare earth oxide coated nano-tungsten carbide.
[0015] The preparation method of the plastic mold steel is:
[0016] (1) ...
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