Study on Preparation of a High-Strength and High-Toughness Low-Alloy Steel for Cross Member of Forklift Mask

San Zhou Yi; Yong Su; Bin Wan; Ran Wei

doi:10.4028/www.scientific.net/AMR.1002.61

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Study on Preparation of a High-Strength and High-Toughness Low-Alloy Steel for Cross Member of Forklift Mask
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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1002Study on Preparation of a High-Strength and...

Study on Preparation of a High-Strength and High-Toughness Low-Alloy Steel for Cross Member of Forklift Mask

Abstract:

According to the performance requirements of the cross member for forklift mask, a new type of high-strength and high-toughness low-alloy steel is designed by multi-element alloying. Through orthogonal testing, the optimized heat treatment technique is obtained. After being normalized at 870°C, quenched at 910°C and tempered at 600°C, the steel produces tempered sorbite which makes the steel the optimum combination of tensile strength Rm and percentage elongation δ (Rm≥750MPa, δ≥20%). Then, the investment casting process is determined. The casting with excellent comprehensive properties is determined.