Super-strength high-toughness wear resistant steel plate and production method thereof
A technology of wear-resistant steel plate and manufacturing method, which is applied in the field of wear-resistant steel, can solve the problems of low welding performance, mechanical performance, poor welding performance and machining performance, etc., and achieve the effect of excellent mechanical performance, good mechanical performance and simple composition
Active Publication Date: 2013-01-16
BAOSHAN IRON & STEEL CO LTD
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Problems solved by technology
[0006] CN1140205A discloses a medium-carbon and medium-alloy wear-resistant steel, the content of carbon and alloy elements (Cr, Mo, etc.) is much higher than that of the present invention, which will inevitably lead to poor welding performance and machinability
[0007] CN1865481A discloses a kind of bainite wear-resistant steel, compared with the present invention, its alloy element (Si, Mn, Cr, Mo etc.) content is higher, weldability, mechanical property are lower
Method used
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Embodiment
[0046] Table 1 shows the mass percentage distribution of chemical elements in the steel plates of Examples 1-7 of the present invention and Comparative Example 1 (patent CN1865481A).
[0047] The smelting raw materials are manufactured according to the steps: smelting→casting→heating→rolling→cooling directly after rolling.
[0048] See Table 2 for the specific process parameters in Examples 1-7.
[0049]
[0050]
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Abstract
The invention provides a wear resistant steel plate, comprising the following chemical components (wt%): 0.22-0.35% of C, 0.10-0.40% of Si, 0.60-1.35% of Mn, not more than 0.015% of P, not more than 0.010% of S, 0.010-0.040% of Nb, 0.010-0.080% of Al, 0.0006-0.0014% of B, 0.005-0.050% of Ti, 0.0010-0.0080 wt% of Ca, not more than 0.080% of V, not more than 0.60% of Cr, not more than 1.00 wt% of W, not more than 0.0080% N, not more than 0.0060% of O, not more than 0.0004% of H and the balance of Fe and inevitable impurities, wherein Nb+Ti is not less than 0.025% and not more than 0.080%, and Al+Ti is not less than 0.030% and not more than 0.12%. The production method of the wear resistant steel plate comprises the steps of smelting, casting, rolling and directly cooling after rolling. The wear resistant steel plate obtained through the components and the process has the advantages of high intensity, good low temperature toughness, and excellent mechanical processing performance, and is suitable for easily abrasive devices in engineering and mine machinery, such as a grab bucket, a scraper conveyer and the like.
Description
technical field [0001] The invention relates to wear-resistant steel, in particular to a low-alloy, ultra-high-strength, high-toughness wear-resistant steel plate and a manufacturing method thereof. Background technique [0002] Wear-resistant steel plates are widely used in mechanical products such as engineering, mining, agriculture, cement production, ports, electric power and metallurgy that require high strength and high wear resistance due to extremely harsh working conditions. Such as bulldozers, loaders, excavators, dump trucks and grabs, stackers and reclaimers, feeding bending structures, etc. [0003] In recent decades, the development and application of wear-resistant steel have developed rapidly. Generally, the carbon content is increased and an appropriate amount of trace elements are added, such as chromium, molybdenum, nickel, vanadium, tungsten, cobalt, boron and titanium, etc., to make full use of precipitation strengthening, Different strengthening method...
Claims
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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/14C21D8/02
CPCC22C38/002C22C38/14C22C38/12C22C38/04C22C38/22C21D8/02C22C38/06C22C38/26C22C38/02C22C38/28C22C38/001C22C38/32C22C38/00C22C38/24C21D1/60C21D6/002C21D6/005C21D6/008C21D8/0205C21D8/0226C21D8/0263C21D9/46C21D2211/008
Inventor 李红斌姚连登苗雨川
Owner BAOSHAN IRON & STEEL CO LTD
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