Hot-rolled wire rod with excellent welding performance and production method thereof
A hot-rolled wire rod and welding performance technology, which is applied in metal rolling and other directions, can solve problems such as prone to false welding, insufficient strength of welding points, and rising alloy costs, and achieve the effect of low defect rate
Inactive Publication Date: 2021-08-17
ZHANGJIAGANG RONGSHENG SPECIAL STEEL CO LTD +2
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Problems solved by technology
[0006] The technical solution provided by the invention patent with the application number 201910357447.7 has high carbon content, and welding quality defects such as false welding and insufficient welding point strength are prone to occur during the welding process; although the technical solution provided by the invention patent with the application number 202010598030.2 has low carbon content , but adding Nb and V for microalloying, the cost of the alloy will rise sharply, making it difficult to apply on a large scale
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[0018] The technical solutions in the embodiments of the present invention will be described in detail below in conjunction with the embodiments of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0019] A hot-rolled wire rod with excellent welding performance according to the present invention, its chemical composition includes: C ≤ 0.15%, Si 0.15-0.5%, Mn 0.8-1.5%, S 0.005-0.05%, P ≤ 0.02% , the balance is Fe and unavoidable impurities; C, Si and Mn satisfy the relational formula: Si / C:2-4, Mn / C:10-20.
[0020] Preferably, its chemical composition includes by weight percentage: C≤0.15%, Si 0.15-0.4%, Mn 0.8-1.5%, S 0.005-0.03%, P≤0.02%, and the balance is Fe and unavoidable i...
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Abstract
The invention discloses a hot-rolled wire rod with excellent welding performance and a production method thereof. The hot-rolled wire rod comprises the chemical components, by mass, less than or equal to 0.15% of C, 0.15-0.5% of Si, 0.8-1.5% of Mn, 0.005-0.05% of S, less than or equal to 0.02% of P and the balance of Fe and inevitable impurities; and the C, the Si and the Mn meet the following conditions, Si / C is 2-4, and Mn / C is 10-20. The tensile strength of the hot-rolled wire rod for a welding net is 480-520MPa, the yield strength is 340-380MPa, the elongation is 35-45%, the strength and good plasticity are effectively combined, and the reject ratio in the welding process is lower than 1%.
Description
technical field [0001] The application relates to the field of low-alloy steel manufacturing, in particular to a hot-rolled wire rod with excellent welding performance and a production method thereof. Background technique [0002] Steel mesh structures are usually made by welding, also known as welded mesh, and are widely used in fence structures in various occasions, such as security defense, isolation devices, garden fences, pavement paving, concrete pavement, high-speed rail track slab base, viaducts, ports Wait. In order to ensure the strength and impact resistance of the steel mesh structure, the welded mesh must have high strength and high plasticity. [0003] The main production process of steel mesh is: hot-rolled wire rod→mechanical peeling→cold rolling reduction→welding→welding mesh. The materials used are usually hot-rolled wire rods represented by Q235, Q345, etc., which are cold-rolled and reduced in diameter, and then welded. The overall performance of the s...
Claims
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IPC IPC(8): C22C38/02C22C38/04B21B1/16B22D11/00C22C33/04
CPCC22C38/02C22C38/04C22C33/04B22D11/001B21B1/16
Inventor 张宇孙国才
Owner ZHANGJIAGANG RONGSHENG SPECIAL STEEL CO LTD