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鍛壓技術：鋁合金側圍拉延工藝分析與優化

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鍛壓技術：鋁合金側圍拉延工藝分析與優化

瀏覽：419 發表時間：2020-06-16

摘要：針對鋁合金汽車覆蓋件拉延成形時易出現開裂、起皺等問題，以某品牌汽車鋁合金側圍為例，對制件的工藝性進行了分析，設計了工藝補充面，并進行了初始模擬與分析。主要研究了門洞開裂的優化方案，提出了內圈拉延筋鎖緊、優化坯料線R角、降低沖壓速度3種方案，研究了其對門洞開裂的影響。

　　模擬結果表明：鎖緊內圈拉延筋，門洞處切向撕裂現象緩解，但板件內部出現開裂，此方案不可行;門洞開裂與坯料線R角有很大關系，鈍化坯料線R角能有效解決門洞開裂問題;通過降低沖壓速度，能對門洞應力集中區域起到輔助優化的作用。實際制件與仿真結果基本一致，對同類產品具有很好的參考意義。

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