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彩涂板经常出现的质量问题?请听佛山万庆分享及分析

2022-11-18 14:48:48 来源:佛山市万庆物资有限公司 http://www.wanqingwz.com/ 阅读

彩涂板是冶金和化工相结合的表面处理工程的重要产品,彩涂板作为表面技术处理产品,其产品质量不仅仅局限于产品的理化性能(膜厚、光泽、柔韧性、耐反向冲击性、耐溶剂性、耐腐蚀性、耐候性等),还包括彩涂板产品的涂层表面质量。

Color coating is an important product of metallurgical and chemical surface treatment engineering, color coating as a surface technology products, the product quality is not limited to the physical and chemical performance of the product (film thickness, luster, flexibility, reverse impact resistance, solvent resistance, corrosion resistance, weather resistance, etc.), also includes the coating surface quality of color coating products.

1. 弯曲性不良

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

发生原因:

1)、前处理的掌握量过多。

2)、涂层厚度过厚。

3)、过度烘烤。

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。

1.Poor curvature

Features: When the steel bending 180 degrees test, the coating of the processing site crack and coating stripping

Causes:

1)Too much mastery of pre-processing.

2) The coating thickness is too thick.

3) Excessive baking.

4) The lower coating is different from the manufacturer of the upper paint, or the improper use of dilute materials.

2.硬度不良

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

发生原因:

1)炉温低,涂层固化不充分。

2)加热条件不适当

3)涂层厚度比规定的厚

2. Poor hardness

Features:Use a drawing pencil to scratch the coating surface, wipe off the rear surface and leave a scratch 

Causes:

1)The furnace temperature is low, and the coating curing is not sufficient. 

2)Improper heating conditions

3) The coating thickness is thicker than that specified

3. 凸点

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

发生原因:

1)涂装时辊上有异物混入。

2)薄板产品在捆扎时的扎痕。

3)倒卷时受到外部冲击。

3. The convex point

Features: because of the steel belt by the external impact, the plate surface appears prominent or depression, some have a certain spacing, some do not

Causes:

1)There are foreign matter on the roller during coating.

2) Tie marks of sheet products during binding.

3) Get external impact when inverted.

4. 边部气泡

特点:两侧沾有涂料,经烘干,出现气泡

发生原因:原材有毛刺沾有涂料多,两边出现缝隙

4.The convex point

Features: because of the steel belt by the external impact, the plate surface appears prominent or depression, some have a certain spacing, some do not

Causes:

1) There are foreign matter on the roller during coating.

2) Tie marks of thin plate products during binding.

3) Get external impact when inverted.

4)Side air bubbles Features: both sides are stained with coating, after drying, air bubbles appear Cause of occurrence: raw material has burr stained has paint much, both sides appear gap

5.麻点

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原因:

1)涂料中混入其它种类或其它公司的涂料。

2)涂料中有异物混入引起。

3)前处理过程中水洗不良。

5. The hemp point

Features: Foreign body or dust mixed from the outside highlights on some or all of the surface after coating causes:

1)Mix aint with other types or other company coatings.

2) Mixed substances caused by foreign bodies in the paint. 3) Poor water washing during pretreatment.

5.橘皮

特点:已干燥的表面涂层象橘子皮一样粗糙,不均匀

发生原因:

1)湿膜过厚。

2)涂料的黏度较高时。

6. Orange peel

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

Causes:

1)The wet film is too thick.

2) When the viscosity of the coating is high.

7.耐溶剂性能差

特点:丁酮擦拭有点状掉漆

发生原因:

1)烘烤温度没有达到要求

2)涂料的固化有问题

3)前处理清洗不干净

7. Poor solvent resistance performance

Features: Butanone wipe a bit off the paint

Causes:

1) The baking temperature did not meet the requirements

2) The curing of the coating is problematic

3) The cleaning is not clean

8.冲击不合格

特点:漆膜冲击后,经胶带粘后部分或全部掉漆

发生原因:

1)前处理不佳

2)检查面漆固化温度是否合理

8. Inqualified impact

Features: paint film impact, part or all of the paint

Causes:

1)Poor pre-processing

2) Check whether the curing temperature of the surface paint is reasonable

9.缩孔

特点:漆膜不平整,局部露底

发生原因:

1) 钢带表面不洁净

2)底漆冷却水不洁净

3)涂料粘度没达到上机要求

9. Shaft hole

Features: the paint film is uneven, and the local dew base

Causes:

1)The steel strip surface is not clean

2) The primer cooling water is unclean

3) The coating viscosity does not meet the upper machine requirements

10.漏涂

特点:面漆未涂上

发生原因:

1)边部面漆未涂上,基板板型不好或涂辊与大背辊间压力不足。

2)板面中间面漆未涂上,底漆冷却后板面有水或其它异物。

10. Leakage

Features: Finish is not painted

Causes:

1The side finish paint is not painted, the substrate plate type is not good or the pressure between the coated roller and the large back roller is insufficient.

2The middle finish of the plate is not coated, and there is water or other foreign matter after cooling the primer.

11.色差

特点:同标准板的颜色出现差异

发生原因:

1)涂装厚度过厚或过薄.

2)不是一批涂料

3)黏度稀释时搅拌不均。

11. Color difference

Features: Different in color from the standard plate

Causes:

1)Overpainting thickness is too thick or too thin.

3) Not a batch of paint

3) Uneven mixing during viscosity dilution.

12.光泽不良

特点:光泽的范围出现异常

发生原因:

1)涂层厚度不适当。

2)固化条件不适当。

3)搅拌不充分。

12. Poor luster Features:

The scope of the luster is abnormal

Causes:

1Inappropriate coating thickness.

2Inappropriate curing conditions.

3Inadequate mixing.

13.塌卷

特点:钢卷卷取后在仓库存储时内径变形

发生原因:

1)钢卷卷取后受外力的影响

2)收卷张力不正确

3)荷重不均

13. Fell 

Features:

1internal diameter deformation after storage in warehouse Causes:

2Steel coil is affected by external force after drawing

3Incorrect volume collection tension Uneven load

14.返沾

特点:开卷时有轻度剥离,底漆返沾会出现类似小米粒状颗粒,涂面漆后表面凹凸不平。

发生原因:

1)卷取前冷却不够

2)烘烤不足

3)部分载重过大

14.Return to touch

Features:

open roll when light stripping, primer return touch will appear similar to millet grain particles, the surface is uneven after the surface paint.

Causes:

1)Insufficient cooling before winding up

2) Insufficient baking

3) Some of the heavy load is too heavy

15.压伤

特点:在涂敷之后的压坑

发生原因:

1)原料卷有压伤

2)在涂敷之前通过各种辊子压伤

3)在涂敷之后和涂料一块的压伤

15. Pressure injury 

Features:the pressure pit after the coating Causes:

1)The raw material roll has pressure injury

2) Damage through various rollers before applying

3) After applying, the compression wound is applied with the paint

彩涂板产品的理化性能、表面质量共同决定了彩涂板的最终产品质量。影响产品质量的因素较多,佛山万庆一旦现质量缺陷,就需要全线密切配合逐步排查,找出缺陷原因加以解决。因此正确理解涂料及生产工艺、合理调整工艺参数、实行全线质量管理、责任到人、不断提高生产和技术人员技能是提高彩涂板产品质量的必要途径。

The physical and chemical performance and surface quality of color coating board products jointly determine the final product quality of color coating board products. There are many factors affecting product quality. Once Foshan Wanqing finds quality defects, it is necessary to cooperate closely with all line and gradually investigate to find out the causes of the defects to solve them. Therefore, the correct understanding of coating and production process, reasonable adjustment of process parameters, the implementation of full-line quality management, responsibility to people, and constantly improve the skills of production and technical personnel is the necessary way to improve the quality of color coating board products.


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