鋼制車輪疲勞失效案例分析

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摘要： 針對3個(gè)鋼制車輪在彎曲疲勞和徑向疲勞試驗(yàn)過程中提前失效的問題，利用斷口掃描、能譜面掃描、顯微組織和低倍組織等試驗(yàn)分析了材料和加工工藝對車輪疲勞性能的影響。結(jié)果表明，材料中小尺寸夾雜物聚集，輪輞和輪輻合成焊接、輪輞閃光對焊的參數(shù)不當(dāng)均會(huì)導(dǎo)致車輪疲勞性能的削弱。

關(guān)鍵詞：鋼制車輪 彎曲疲勞 徑向疲勞 夾雜物 焊接

中圖分類號(hào)：TH14   文獻(xiàn)標(biāo)志碼：B   DOI： 10.19710/J.cnki.1003-8817.20240122

Case Study on Fatigue Failure of Steel Wheels

Liu Lu， He Xian Yong， Zhao Guang

（Tangshan Iron and Steel Group Co.， Ltd. Technical Center， Tangshan 063016）

Abstract： Aiming to three cases of premature failure of steel wheels during bending fatigue and radial fatigue tests， this paper analyzes the influence of materials processing technology on wheel fatigue performance using fracture scanning， energy spectrum surface scanning， microstructure， and low magnification experiments. The shows that the aggregation of small-sized inclusions in materials， improper parameters in the synthesis welding of wheel rims and spokes， and incorrect parameters for flash welding of wheel rims all lead to the weakening of wheel fatigue performance.

Key words： Steel wheels， Bending fatigue， Radial fatigue， Inclusions， Welding

1 前言

車輪作為汽車簧下旋轉(zhuǎn)構(gòu)件，輕量化節(jié)能效果遠(yuǎn)高于簧上構(gòu)件。（剩余4691字）