Low hardenability wear-resistant strip steel and manufacturing method thereof
A manufacturing method and hardenability technology, applied in the field of construction machinery steel, can solve the problems of easy cracking, high cost, high hardenability of wear-resistant steel, and achieve the advantages of reducing production cost, reducing hardenability and improving toughness. Effect
Inactive Publication Date: 2018-10-16
武汉钢铁有限公司
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Problems solved by technology
[0006] The purpose of the present invention is to solve the problems of high hardenability of existing wear-resistant steel, easy to crack during use, complicated preparation process and high cost, and provide a wear-resistant strip steel with low hardenability and its manufacturing method
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Embodiment Construction
[0030] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0031] Preferred Embodiments 1 to 4 of the present invention further describe in detail the low hardenability wear-resistant strip steel and its manufacturing method according to the present invention, and use Comparative Examples 1 to 4 to describe the low-hardenability wear-resistant strip steel designed by the present invention. The chemical composition and main preparation process parameters are further compared and explained.
[0032] Table 1 shows the chemical compositions of Examples 1-4 and Comparative Examples 1-4.
[0033] The manufacturing methods of the low hardenability wear-resistant strip steel described in the above examples 1 to 4 and comparative examples 1 to 4 mainly include hot metal desulfurization pretreatment, converter smelting, LF+RH furnace refining, slab continuous casting, and slab casting. Slow cooling, sla...
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Abstract
The invention discloses a low-hardenability abrasion-resistant band steel and a manufacturing method thereof, and belongs to the technical field of engineering machinery steel. The low-hardenability abrasion-resistant band steel comprises the chemical components of, by weight, 0.405-0.685% of C, 0.10-0.20% of Si, less than or equal to 0.12% of Mn, less than or equal to 0.015% of P, less than or equal to 0.005% of S, 0.012-0.028% of Ti, 0.025-0.075% of Nb, 0.015-0.038% of Als, 0.005-0.015% of N and the balance Fe and inevitable impurities. Through a method for refining the grains to the greatest extent, the purpose of lowering the hardenability of a materials is achieved, meanwhile, the low-cost C is used for as the main element for improving the hardness and the abrasion resistance, Nb, Ti and Al are used for the elements for remarkably refining the grains, the contents of elements such as Si and Mn for improving the hardenability is sufficiently lowered, thus, the production cost can be greatly lowered on the premise that the prepared band steel has the low hardenability and high toughness, and industrial production is facilitated.
Description
technical field [0001] The invention relates to the technical field of steel for construction machinery, in particular to a low hardenability wear-resistant strip steel and a manufacturing method thereof. Background technique [0002] The low hardenability thin strip wear-resistant steel is especially suitable for the manufacture of wear-resistant steel pipes and wear-resistant thin-film components, such as a large number of tubular and strip-shaped wear-resistant parts or components required for mining machinery and cement production. Low hardenability thin strip wear-resistant steel, with good plasticity and toughness, easy to process and form. Generally, parts made of this steel can be directly subjected to integral quenching or high-frequency induction quenching after resistance welding to obtain components with a high-hardness wear-resistant layer of 1 mm to 2 mm on the outer surface, and the core of the component has high plastic toughness. . [0003] Although the su...
Claims
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IPC IPC(8): C22C38/02C22C38/04C22C38/06C22C38/14C22C38/12C21D8/02
CPCC21D8/0226C22C38/001C22C38/02C22C38/04C22C38/06C22C38/12C22C38/14
Inventor 程吉浩董中波刘文斌郭斌张开广范巍罗毅
Owner 武汉钢铁有限公司