Causes of Pinhole Defects in Primary Finishing Coat and Its Countermeasures

LEI Jing-qin[1];LUO Zu-xin[1];TAN Song-bi[1];TANG Chun-jian[1]

LEI Jing-qin[1];LUO Zu-xin[1];TAN Song-bi[1];TANG Chun-jian[1]

Modern Paint & Finishing ›› 2021, Vol. 24 ›› Issue (4) : 24-26.

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Modern Paint & Finishing ›› 2021, Vol. 24 ›› Issue (4) : 24-26.

Causes of Pinhole Defects in Primary Finishing Coat and Its Countermeasures

LEI Jing-qin[1];LUO Zu-xin[1];TAN Song-bi[1];TANG Chun-jian[1]

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Abstract

Pinhole is one of the common defects of automobile coating film,which is affected by many factors.By reducing the film thickness,increasing the pre-drying temperature,adjusting the spraying robot and adding additives,the causes of pinholes were verified,and the pinholes of the body finish were basically solved by coating adjustment.

Key words

pinhole;finish paint;additives

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LEI Jing-qin[1];LUO Zu-xin[1];TAN Song-bi[1];TANG Chun-jian[1]. Causes of Pinhole Defects in Primary Finishing Coat and Its Countermeasures[J]. Modern Paint & Finishing. 2021, 24(4): 24-26