影响喷塑涂膜施工质量的原因

国度发表于 2006-11-5 21:19:36

影响涂膜施工质量的原因<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p>
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涂膜缺陷<o:p></o:p></TD>
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粉末喷涂过程造成的原因<o:p></o:p></TD></TR>
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涂膜光泽不足<o:p></o:p></TD>
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1、固化时烘烤时间过长<o:p></o:p>
2、温度过高<o:p></o:p>
3、烘箱内混有其他有害气体<o:p></o:p>
4、工件表面过于粗糙<o:p></o:p>
5、前处理方法选择不妥<o:p></o:p></TD></TR>
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涂膜变色<o:p></o:p></TD>
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1、多次反复烘烤<o:p></o:p>
2、烘箱内混有其他气体<o:p></o:p>
3、固化时烘烤过度<o:p></o:p></TD></TR>
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涂膜表面桔皮<o:p></o:p></TD>
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1、喷涂的涂层厚薄不均<o:p></o:p>
2、涂层过厚<o:p></o:p>
3、固化温度偏低<o:p></o:p>
4、粉末受潮、粉末粒子太大<o:p></o:p>
5、工件接地不良<o:p></o:p>
6、烘烤温度过高<o:p></o:p></TD></TR>
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涂膜产生凹坑<o:p></o:p></TD>
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1、工件表面处理不当，除油不净<o:p></o:p>
2、气源受污染，压缩空气除油、除水不彻底<o:p></o:p>
3、工件表面不平整<o:p></o:p>
4、受灰尘或其他杂质污染<o:p></o:p>
5、电压与枪距调整不当产生电击孔<o:p></o:p></TD></TR>
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涂膜出现气泡<o:p></o:p></TD>
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1、工件表面处理后，水分未彻底干燥，留有前处理残液<o:p></o:p>
2、脱脂除锈不彻底<o:p></o:p>
3、底层挥发未去净<o:p></o:p>
4、工件表面有气孔<o:p></o:p>
5、粉末涂层太厚<o:p></o:p></TD></TR>
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涂层不均匀<o:p></o:p></TD>
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1、粉末喷涂不均匀<o:p></o:p>
2、喷枪与工件距离过近<o:p></o:p></TD></TR>
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涂抹冲击强度和附着力差<o:p></o:p></TD>
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1、磷化膜太厚<o:p></o:p>
2、固化温度过低，时间过短，使固化不完全<o:p></o:p>
3、金属表面未处理干净<o:p></o:p></TD></TR>
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涂膜产生针孔<o:p></o:p></TD>
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1、空气中有异物，残留油污和水<o:p></o:p>
2、喷枪电压过高，造成涂层击穿<o:p></o:p>
3、工件表面潮湿或有挥发性物质<o:p></o:p>
4、涂层太薄<o:p></o:p>
5、涂膜没有充分固化<o:p></o:p></TD></TR>
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涂膜表面出现小颗粒疙瘩<o:p></o:p></TD>
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1、喷枪堵塞或气流不通<o:p></o:p>
2、喷枪雾化不佳<o:p></o:p>
3、喷室内有粉末滴落<o:p></o:p>
4、有其他杂物污染工件表面<o:p></o:p>
5、压缩气含水分大<o:p></o:p></TD></TR>
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涂膜物理机械性能差<o:p></o:p></TD>
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1、烘烤温度偏低，时间过短或未达到固化条件<o:p></o:p>
2、固化炉上，中，下温差大<o:p></o:p>
3、工件前处理不当<o:p></o:p></TD></TR>
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涂抹耐腐蚀性能差<o:p></o:p></TD>
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1、涂膜没有充分固化<o:p></o:p>
2、烘箱温度不均匀，温差大<o:p></o:p>
3、工件前处理不当<o:p></o:p></TD></TR>
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供粉不均匀<o:p></o:p></TD>
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1、供粉管或喷粉管堵塞，粉末在喷嘴处附着硬化<o:p></o:p>
2、空气压力不足，压力不稳定<o:p></o:p>
3、空压机混有油或水<o:p></o:p>
4、供粉器硫化不稳定，供粉器粉末过少<o:p></o:p>
5、供粉管过长，粉末流动时阻力增大<o:p></o:p></TD></TR>
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粉末飞扬吸附性差<o:p></o:p></TD>
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1、静电发生器无高压产生或电压不足<o:p></o:p>
2、工件接地不良<o:p></o:p>
3、气压过大<o:p></o:p>
4、回收装置中风道堵塞<o:p></o:p>
5、前处理达不到要求<o:p></o:p></TD></TR>
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喷粉量减少<o:p></o:p></TD>
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1、气压不足，气量不够<o:p></o:p>
2、气压过高，粉末与气流的混合气体中空气比例过高<o:p></o:p>
3、空气中混有水气和油污<o:p></o:p>
4、喷枪头局部堵塞<o:p></o:p></TD></TR>
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喷粉量时高时低<o:p></o:p></TD>
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1、粉末结块<o:p></o:p>
2、粉末混有杂质，引起管路堵塞<o:p></o:p>
3、粉末密度过大<o:p></o:p>
4、气压不稳定<o:p></o:p>
5、供粉管中局部堵塞<o:p></o:p></TD></TR>
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<TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: windowtext 1pt solid; WIDTH: 117pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; HEIGHT: 58.5pt; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" width=156>
喷粉管组塞<o:p></o:p></TD>
<TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; WIDTH: 333pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; HEIGHT: 58.5pt; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" vAlign=top width=444>
1、由于喷粉管材质缘故，粉末容易附着管壁<o:p></o:p>
2、输粉管受热，引起管中粉末结块<o:p></o:p>
3、输粉管弯折，扭曲<o:p></o:p>
4、粉末中混有较大的颗粒杂质<o:p></o:p></TD></TR></TBODY></TABLE>
<o:p> 不知是否有用</o:p>

denggang0792 发表于 2006-11-16 15:55:10

Re: 影响喷塑涂膜施工质量的原因

好东西，刚好要这个啊！！！！
谢谢

alion2008 发表于 2006-12-20 14:27:27

Re: 影响喷塑涂膜施工质量的原因

很有用啊，我也有类似的资料，但没有你的全，收藏，谢谢楼主。

lianhuaxiyu 发表于 2006-12-20 21:44:38

Re: 影响喷塑涂膜施工质量的原因

真的好全呀谢谢楼主

roy08 发表于 2011-1-5 14:39:37

很实用，正查找铸件喷塑面气孔及小颗粒疙瘩原因。

大佐发表于 2011-5-15 00:20:39

楼主真棒！

jsbyzbx 发表于 2011-8-8 10:06:05

楼主总结的很好！感谢楼主分享！

70140 发表于 2011-8-18 11:05:23

感谢感谢,正需要的资料!!!!!

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