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Wear-resistant and high-strength carbon structural steel material

A carbon structural steel, high-strength technology, which is applied in the field of high-strength carbon structural steel materials and wear resistance, can solve the problems of reduced toughness and wear resistance, and achieve improved toughness and wear resistance, with significant effects and improved intensity effect

Active Publication Date: 2020-08-25
SUZHOU QIJI WELDING MATERIALS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Studies have shown that the addition of trace amounts of V, Ti, Nb and other alloying elements to steel types can precipitate fine and dispersed carbon and nitrides, which play an important role in grain refinement, precipitation strengthening, and control of recrystallization, thereby further improving the strength of steel. ; but usually the strength and wear resistance of steel are a pair of contradictions; while increasing the strength of steel bars, it often results in a decrease in toughness and wear resistance

Method used

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  • Wear-resistant and high-strength carbon structural steel material

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Experimental program
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Effect test

Embodiment 1

[0024] A wear-resistant, high-strength carbon structural steel material, the specific chemical composition of the steel is C: 0.12%, Si: 0.16%, Cr: 1.2%, Ni: 0.15%, Al 0.03%, N: 0.05 %, V: 0.5%, Mo: 0.35%, Mn: 0.7%, Zr: 1.0%, Ta: 0.05%, S: 0.005%, B: 0.005%, Ba: 0.003%, P≤0.0015%, the balance is Fe and unavoidable impurities;

[0025] (1) The components are weighed according to the weight of each chemical composition, and the mixed materials are smelted and cast into billets; hot-rolled through a hot-pressing furnace, which adopts a high-efficiency walking beam heating furnace and is controlled by an industrial computer and PLC. The system can realize automatic combustion according to the set parameters, the preheating section is ≤850°C, the starting rolling temperature is 1050°C, the final rolling temperature is 860°C, and the billet heating time is 3h; the reduction rate of hot rolling is ≥90%; after hot rolling Turn on the high-pressure water for phosphorus removal, and th...

Embodiment 2

[0030] A wear-resistant, high-strength carbon structural steel material, the specific chemical composition of the steel is C: 0.1%, Si: 0.16%, Cr: 1.0%, Ni: 0.25%, Al: 0.04%, N: 0.03%, V: 0.7%, Mo: 0.3%, Mn: 0.6%, Zr: 1.2%, Ta: 0.02%, S: 0.001%, B: 0.004%, Ba: 0.002%, P≤0.0015%, balance It is Fe and unavoidable impurities; where (Mo+V)≥0.8%, (Mn+V)≤1.3%

[0031] (1) The components are weighed according to the weight of each chemical composition, and the mixed materials are smelted and cast into billets; hot-rolled through a hot-pressing furnace, which adopts a high-efficiency walking beam heating furnace and is controlled by an industrial computer and PLC. The system can realize automatic combustion according to the set parameters, the preheating section is ≤850°C, the starting rolling temperature is 1050°C, the final rolling temperature is 880°C, and the billet heating time is 4h; the reduction ratio of hot rolling is ≥95%; after hot rolling Turn on high-pressure water for p...

Embodiment 3

[0036] A wear-resistant, high-strength carbon structural steel material, the specific chemical composition of the steel is C: 0.08%, Si: 0.17%, Cr: 1.0%, Ni: 0.34%, Al: 0.05%, N: 0.04%, V: 0.9%, Mo: 0.25%, Mn: 0.4%, Zr: 1.2%, Ta: 0.01%, S: 0.003%, B: 0.004%, Ba: 0.004%, P≤0.0015%, balance is Fe and unavoidable impurities;

[0037] (1) The components are weighed according to the weight of each chemical composition, and the mixed materials are smelted and cast into billets; hot-rolled through a hot-pressing furnace, which adopts a high-efficiency walking beam heating furnace and is controlled by an industrial computer and PLC. The system can realize automatic combustion according to the set parameters, the preheating section is ≤850°C, the starting rolling temperature is 1080°C, the final rolling temperature is 880°C, and the billet heating time is 5h; the reduction rate of hot rolling is ≥95%; after hot rolling Turn on high-pressure water for phosphorus removal, and the phosph...

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Abstract

The invention belongs to the technical field of steel materials and relates to a wear-resistant and high-strength carbon structural steel material. The wear-resistant and high-strength carbon structural steel material comprises the following components, in percentage by weight, including 0.08-0.12% of C, 0.16-0.17% of Si, 1.0-1.2% of Cr, 0.15-0.34% of Ni, 0.03-0.05% of Al, 0.03-0.05% of N, 0.5-0.9% of V, 0.25-0.35% of Mo, 0.4-0.7% of Mn, 1.0-1.2% of Zr, 0.01-0.05% of Ta, 0.001-0.005% of S, 0.004-0.005% of B, 0.002-0.004% of Ba, less than or equal to 0.0015% of P and the balance of Fe. According to the wear-resistant and high-strength carbon structural steel material in the invention, rare earth elements are combined with process treatment, the effect on improving the strength, the wear resistance and the like is obvious, and the technical problem that the strength and the wear resistance of steel are not maintained at the same time is solved.

Description

technical field [0001] The invention belongs to the technical field of carbon structural steel materials, and in particular relates to a wear-resistant and high-strength carbon structural steel material. Background technique [0002] Carbon structural steel is divided into two types: ordinary carbon structural steel and high-quality carbon structural steel. Ordinary carbon structural steel contains more impurities and is cheap. It is used in places that do not require high performance. It has low strength, but good plasticity, toughness, and cold deformation performance; except for a few cases, it is generally used directly without heat treatment; Made into bar steel, special-shaped steel, steel plate, etc.; mainly used in railways, bridges, and various construction projects to manufacture various metal components that bear static loads. High-quality carbon structural steel The steel is pure, has few impurities, and has good mechanical properties. It can be used after heat ...

Claims

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Application Information

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IPC IPC(8): C22C38/02C22C38/04C22C38/06C22C38/44C22C38/46C22C38/48C22C38/50C22C38/54C21D8/02
CPCC21D8/0226C21D8/0236C21D8/0247C22C38/001C22C38/002C22C38/02C22C38/04C22C38/06C22C38/44C22C38/46C22C38/48C22C38/50C22C38/54
Inventor 徐书成徐卫石晨敏
Owner SUZHOU QIJI WELDING MATERIALS CO LTD
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