A thin-walled high-strength frame tube suitable for low-temperature environment and a preparation method and application thereof

CN118143224BActive Publication Date: 2026-10-16JIANGSU UNIV OF TECH
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Patent Information

Application Number
CN202410239884.X
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-03-04
Publication Date
2026-10-16
Estimated Expiration
2044-03-04

AI Technical Summary

Technical Problem

[0005]有鉴于此，本申请实施例提供一种适用于低温环境的薄壁高强度车架管及其制备方法和应用，该方法具有成本低、制备简单、生产效率高等优点，制得的车架管适用极低温(-196℃～-20℃)环境，能够有效克服现有摩托车车架管低温塑性差、强塑积较低、管壁较厚等缺陷，通过本申请方法制备的车架管在极低温环境下使用能保证较高的强度和塑性，且制造成本低，管壁较薄实现了轻量化设计要求

Benefits of technology

[0027](1) This application uses hot pressing and cold drawing forming technology to produce a 24GPa% strength-plasticity product suitable for high-strength thin-walled motorcycle frame tube at low temperature. The frame tube is a low alloy thin-walled seamless steel tube with high strength-plasticity product, good hardness and impact toughness, and thin wall. It achieves the combination of high strength and plasticity and thin wall thickness of the frame tube at low temperature, further reducing the weight and cost of the motorcycle, and meeting the current requirements for high strength and lightweight design of motorcycle frame tube.

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Abstract

The embodiment of the application relates to a thin-wall high-strength frame pipe suitable for a low-temperature environment and a preparation method and application thereof, and belongs to the technical field of metal material processing. The embodiment of the application aims to solve the technical problems of poor low-temperature plasticity, low strength-plasticity product, and thick pipe wall of an existing motorcycle frame pipe. The preparation method of the thin-wall high-strength frame pipe suitable for a low-temperature environment comprises the following steps: (1) powder mixing; (2) semi-solid alloy slurry; (3) pipe blank forming; (4) wall and diameter reduction; (5) homogenization treatment; and (6) surface pickling and sand blasting. The preparation method provided by the embodiment of the application is simple, high in production efficiency, and the prepared frame pipe has the characteristics of good low-temperature plasticity, high strength, and small wall thickness.
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