常州亿创钣金加工厂专业从事精密钣金加工、激光切割加工为主的钣金加工型厂家

常州亿创钣金加工厂

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钣金喷漆时出现腻子痕迹应如何消除

2018-05-25 21:50:34 常州亿创钣金加工厂 阅读

定义:修整部分周围的面漆鼓起成环状。

成 因:底材没有完全硬化,以致吸收了面漆。

砂纸太粗,面漆使用了不合适的稀释剂。

以原子灰或填眼灰修补的部分在喷涂面漆前没有经过正确的打底或封闭。

预防方法:打磨经修补的部分,直至金属层外露;在外露的油漆层边缘利用稀释剂进行溶剂试验,如油漆软化,则此漆层必须封隔。原子灰及填眼灰只可用于外露的金属上,不可覆盖在原有漆面上。

选用合适的砂纸;确定所有预备材料都已完全干燥。

补救方法:修补材料干透后,磨平损坏的部分,再以打底材料加以隔离, 然后重新喷涂。

钣金喷漆起泡的原因及解决方法

定义:表面有一些圆点突起。

成因:指模印下的乳头状线,喷涂前底材没有充分干透或清洁。

底材的气孔/针孔在喷涂前没有经过打磨或填平。

喷涂过程中没有将聚材料适当隔绝。

喷涂时温度变化不定,以至产生缩聚(收缩)作用。

预防方法:确定所有预备材料都已恰当地干透。

用除硅清洁剂小心清洁底材。

喷涂面漆前须隔离聚酯材料。

小心打磨针孔,或重新施喷原子灰/填眼灰/中间漆。

补救方法:打磨有毛病有范围,然后重新喷涂。

Definition: the topcoat around the dressing part is raised into a ring.

Cause: the substrate is not completely hardened, so that it absorbs topcoat.

Sandpaper is too thick for topcoat to use unsuitable diluent.

The parts repaired with atomic ash or filler have not been correctly laid or closed before spraying the topcoat.

Prevention method: grinding the repaired part until the metal layer is exposed; the coating layer must be sealed off by using the diluent to carry out the solvent test on the exposed paint layer, if the paint is softened. The putty and filler can only be applied to exposed metal, not on the original lacquer surface.

Choose the right sandpaper; make sure all the preparation materials are completely dry.

Remedy: after the dry material is repaired, the damaged part is then separated by priming material and then sprayed again.

The cause and solution of the blistering of the sheet metal spray paint

Definition: there are some dots on the surface.

Cause: the nipple line printed on fingerprints. The base material before spraying is not fully dried or cleaned.

The hole / pinhole of the base material was not polished or filled before spraying.

There is no proper isolation of the material during the spraying process.

The temperature of the spray is variable, resulting in condensation.

Precaution: make sure all the preparation materials are properly dried.

Carefully clean the bottom wood with a silicon removal cleaner.

The polyester material must be isolated before the paint is sprayed.

Careful grinding of pinholes or re spraying of putty / filling lime / intermediate paint.

Remedy: there is a range of grinding defects, and then re spray.


标签:   钣金加工