High performance ultrahigh carbon steel plate and preparation technology thereof
An ultra-high carbon steel and high-performance technology, which is applied in the field of high-performance ultra-high carbon steel plates and preparation processes, can solve the problems of low hardness and limitations of steel plates, achieve the goals of reducing production costs, reasonable components, and avoiding experimental tests Effect
Active Publication Date: 2014-12-31
佛山市广鸿不锈钢有限公司
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Problems solved by technology
Its disadvantages: due to the low carbon content, the hardness of the steel plate is not high, so its application is limited
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment 1
[0014] Embodiment 1: The composition of the ultra-high carbon steel alloy of the present invention is: carbon content 1.3%-1.6%; chromium content 1.3%-1.5%; silicon and manganese content 0.4%-0.6%; sulfur and phosphorus content are both less than 0.02%; The aluminum content is 1.6% to 2.0%; the rest is iron.
Embodiment 2
[0015] Embodiment 2: On the basis of embodiment 1, carbon content 1.3%%; Chromium content 1.3%%; Silicon, manganese content 0.4%%; Sulfur, phosphorus content are all less than 0.02%; Aluminum content 1.6%;
Embodiment 3
[0016] Embodiment 3: On the basis of Embodiment 1, the carbon content is 1.6%; the chromium content is 1.5%; the silicon and manganese contents are 0.6%; the sulfur and phosphorus contents are all less than 0.02%; the aluminum content is 2.0%;
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Abstract
The invention relates to a high performance ultrahigh carbon steel plate (Fe-1.5C-1.5Cr-2.0Al), which has the advantages of resource saving, environmental protection good process and mechanical properties. The carbon steel plate comprises 1.3%-1.6% of carbon, 1.3%-1.5% of chromium, 0.4%-0.6% of silicon, 0.4%-0.6% of manganese, less than 0.02% of sulfur, less than 0.02% of phosphorus, 1.6%-2% of aluminum and the balance of iron. The invention has the following advantages: first, Thermo-Calc thermodynamics calculation software system is used for thermodynamic phase diagram calculation on ultrahigh carbon steel alloy system, so as to provide the theoretical basis for composition optimization and determination of preparation process, avoid blind experimental test, and help to reduce the preparation cost; and second, the ultrahigh carbon steel has reasonable components, good process and mechanical performance, and the forged blank has dense microstructure and no large blocky carbides, and can be easily prepared into ultrafine refining plate without surface defect through large deformation hot rolling.
Description
technical field [0001] The invention relates to a high-performance ultra-high carbon steel (Fe-1.5C-1.5Cr-2.0Al) steel plate that is resource-saving and environment-friendly, and has good technological and mechanical properties and a preparation process. Background technique [0002] CN102925800A, title "a production method of ultra-high-strength steel plate", the mass percentage of steel is composed of C=0.23~0.26, Si=0.65~0.75, Mn=1.40~1.50, P≤0.015, S≤0.010, Al=0.03~ 0.06, Nb=0.02~0.03, V=0.055~0.065, Ti=0.035~0.050, Mo=0.25~0.35, B=0.0017~0.0022; the process steps are: a. Steelmaking: Sulfur content in molten iron after pretreatment of molten iron S≤ 0.010%, temperature ≥ 1250°C, clean the slag before molten iron enters the converter; control C-T at the end of the converter to coordinate tapping, P≤0.012%, S≤0.015%; strictly block slag and tap, slag thickness ≤50mm, tapping time 4 ~7min, 1 / 5 of the steel is tapped to add alloy, and 2 / 5 of the steel is tapped to add the ...
Claims
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IPC IPC(8): C22C38/18C21D8/02
Inventor 石淑琴李全福陈云祥
Owner 佛山市广鸿不锈钢有限公司