車身密封膠膠泡的成因及對策

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摘要：為解決車身焊縫密封膠膠泡問題，從密封膠膠泡的發(fā)生原因作為切入點、首先詳細介紹了車身解體、斷面分析的密封膠膠泡分析方法，明確發(fā)生原因為折邊膠膠量過大，采用調(diào)整板縫、調(diào)整折邊膠等處理方式來解決問題，結果表明：板縫≤0.02 mm時可以消除膠泡，調(diào)整爐溫可減小膠泡的尺寸，無法改善膠泡數(shù)量。

關鍵詞：密封膠 密封膠膠泡 膠泡分析方法 膠泡解決方法

中圖分類號：U466   文獻標識碼：B   DOI： 10.19710/J.cnki.1003-8817.20230205

Cause and Solution of Automotive Body Sealant Bubble

Li Fu， Song Shuang

（FAW Toyota Motor Co.， Ltd.， Changchun 130000）

Abstract： To address the issue of automotive body weld seam sealant bubble， this paper started from the cause of automotive body sealant bubble， it firstly introduced 2 sealant bubble analysis methods including automotive body break-up analysis and section analysis， determined that excessive use of hemming sealant was the cause of sealant bubble， proposed the adjustment of slab gap and hemming sealant to eliminate sealant bubble. The results show that sealant bubble will be eliminated when slab gap is less than 0.02 mm， whereas adjustment of furnace temperature can only reduce the size of sealant bubble， can’t reduce the amount of sealant bubble.

Key words： Sealant， Sealant bubble， Sealant bubble analysis method， Sealant bubble solution

1 前言

中國汽車行業(yè)經(jīng)過二十幾年的高速發(fā)展，已經(jīng)從增量市場逐步過渡到存量市場。（剩余4350字）