High-hardness high-carbon medium-chromium wear-resistant cast iron and preparation method thereof
A wear-resistant cast iron and high-hardness technology, applied in the field of wear-resistant cast iron, can solve the problems of further improvement in hardness, complex preparation process, long production cycle, etc., and achieve the effects of strong plastic deformation, simple process and short production cycle
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Embodiment 1
[0028] A high-hardness high-carbon medium-chromium wear-resistant cast iron and a preparation method thereof. The chemical composition and content of the high-hardness high-carbon medium-chromium wear-resistant cast iron are: C is 3.61wt%, Cr is 12.11wt%, Si is 0.51wt%, Mn is 0.61, Mo is 1.71wt%, and B is 0.39wt%, Zr is 0.51wt%, P≤0.03wt%, S≤0.03wt%, the balance is Fe and unavoidable impurities; wherein: Cr / C=3.35, B / Mo=0.23.
[0029] According to the chemical composition and content of ingredients, smelting, pouring, air cooling to room temperature, grinding; then heating to 850 ° C, heat preservation for 3 hours, quenching into oil, cooling to room temperature, to obtain high hardness and high carbon medium chromium wear-resistant cast iron.
[0030] The high-hardness high-carbon medium-chromium wear-resistant cast iron prepared by the present invention is tested: the carbide is 53vol%, the retained austenite is 12vol%, and the rest is martensite; the high-hardness high-car...
Embodiment 2
[0032] A high-hardness high-carbon medium-chromium wear-resistant cast iron and a preparation method thereof. The chemical composition and content of the high-hardness high-carbon medium-chromium wear-resistant cast iron are: C is 3.76wt%, Cr is 14.99wt%, Si is 0.64wt%, Mn is 0.7wt%, Mo is 1.8wt%, B is 0.34wt%, Zr is 0.64wt%, P≤0.03wt%, S≤0.03wt%, the balance is Fe and unavoidable impurities; wherein: Cr / C=3.986, B / Mo=0.189.
[0033] According to the chemical composition and content of ingredients, smelting, pouring, air cooling to room temperature, grinding; then heating to 950 ° C, heat preservation for 2 hours, quenching into oil, cooling to room temperature, to obtain high hardness and high carbon medium chromium wear-resistant cast iron.
[0034] The high-hardness high-carbon medium-chromium wear-resistant cast iron prepared by the present invention is tested: the carbide is 50.3vol%, the retained austenite is 9vol%, and the rest is martensite; the high-hardness high-car...
Embodiment 3
[0036] A high-hardness high-carbon medium-chromium wear-resistant cast iron and a preparation method thereof. The chemical composition and content of the high-hardness high-carbon medium-chromium wear-resistant cast iron are: C is 3.85wt%, Cr is 13.55wt%, Si is 0.73wt%, Mn is 0.78wt%, Mo is 1.87wt%, B is 0.36wt%, Zr is 0.76wt%, P≤0.03wt%, S≤0.03wt%, the balance is Fe and unavoidable impurities; wherein: Cr / C=3.519, B / Mo=0.193.
[0037] According to the chemical composition and content of ingredients, smelting, pouring, air cooling to room temperature, grinding; then heating to 1000 ° C, heat preservation for 1 hour, quenching into oil, cooling to room temperature, to obtain high hardness and high carbon medium chromium wear-resistant cast iron.
[0038] The high-hardness high-carbon medium-chromium wear-resistant cast iron prepared by the present invention is tested: the carbide is 48.4vol%, the retained austenite is 6.5vol%, and the rest is martensite; the hardness of the hi...
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