1、硬度不良

1. Poor hardness

特点：用制图铅笔用力在涂层表面划一道，擦去后表面留下一道划痕

Features: Use a drawing pencil to force a scratch on the coating surface, leaving a scratch on the surface after wiping

发生原因：

Cause:

①、炉温低，涂层固化不充分。

① The furnace temperature is low and the coating is not fully solidified.

②、加热条件不适当

② . Improper heating conditions

③、涂层厚度比规定的厚

③ The coating thickness is thicker than the specified thickness

2、麻点

2. Pitting

特点：从外部混入的异物或灰尘在涂装后部分或全部表面有米粒样的突出发生

Features: The foreign matter or dust mixed from the outside has rice grain protrusion on part or all of the surface after coating

原因：

reason:

①、涂料中混入其它种类或其它公司的涂料。

① . Paint mixed with other kinds or other companies' paint.

②、涂料中有异物混入引起。

② . It is caused by the mixing of foreign matters in the paint.

③、前处理过程中水洗不良。

③ . Poor washing during pretreatment.

3、弯曲性不良

3. Poor bending

特点：钢材弯曲180度试验时，加工部位的涂层发生龟裂及涂层剥离发生

Features: When the steel is bent 180 degrees, the coating on the processing part cracks and peels off

原因：

reason:

①、前处理的掌握量过多。

① The amount of pre-processing is too much.

②、涂层厚度过厚。

② The coating thickness is too thick.

③、过度烘烤。

③ Excessive baking.

④、下涂涂料同上涂涂料的制造厂家不同，或稀料的使用不当。

④ The lower coating is different from the coating manufacturer, or the thinner is improperly used.

4、凸点

4. Bump

特点：由于钢带受到外部的冲击，板表面出现突出或凹陷，有的有一定的间距，有的没有发生

Features: due to the external impact on the steel strip, the plate surface appears prominent or concave, some have a certain spacing, and some do not occur

原因：

reason:

①、涂装时辊上有异物混入。

① Foreign matters are mixed on the roller during painting.

②、薄板产品在捆扎时的扎痕。

② The binding marks of sheet products during binding.

③、倒卷时受到外部冲击。

③ . External impact during rewinding.

5、边部气泡

5. Edge bubble

特点：两侧沾有涂料，经烘干，出现气泡发生

Features: There is paint on both sides, and bubbles occur after drying

原因：原材有毛刺沾有涂料多，两边出现缝隙

Cause: burr on raw material, coating and cracks on both sides

6、橘皮

6. Orange peel

特点：已干燥的表面涂层象橘子皮一样粗糙，不均匀

Features: The dried surface coating is as rough and uneven as orange peel

发生原因：

Cause:

①、湿膜过厚。

① The wet film is too thick.

②、涂料的黏度较高时。

② When the viscosity of the coating is high.

7、耐溶剂性能差

7. Poor solvent resistance

特点：丁酮擦拭有点状掉漆发生

Features: paint peeling occurs when wiping with butanone

原因：

reason:

①、烘烤温度没有达到要求

① The baking temperature does not meet the requirements

②、涂料的固化有问题

② There is a problem with the curing of the coating

③、前处理清洗不干净

③ The pretreatment is not clean

此外济南彩钢板厂认为彩涂板的维护保养工作中能够让它清洁，在应用时确保很好的特性不遭受损坏，那样既保证了其外型也确保了运用实际效果。更多相关内容就来我们网站http://www.jnhscg.com咨询！

In addition, Jinan Color Steel Plate Factory believes that the color coated plate can be cleaned in the maintenance work and ensure that its good characteristics are not damaged during application, which not only ensures its appearance but also ensures the actual effect of application. Come to our website for more relevant content http://www.jnhscg.com consulting service