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实例解析塌卷、锈蚀为什么会出现在彩涂板上

返回列表 来源: 发布日期: 2020.05.11

实例解析塌卷、锈蚀为什么会出现在彩涂板上

天物彩板专注彩板行业16年——更多佛山彩钢板生产厂家_家电彩涂板价格-天物彩板请拨打网站上方电话咨询


彩涂钢板在生产过程中,偶尔会出现崩边问题,给生产带来很大的麻烦。据专家分析,造成塌方的主要原因是钢卷层间摩擦相对较小。通过试验测量,确定了不同类型彩涂钢板层间最大静摩擦系数,并从微观角度对不同类型彩涂钢板层间坍塌的原因进行了比较分析,结合坍塌的情况,提出了预防措施。
卷边不均匀,易松脱,夹芯板易歪斜。
彩钢板边缘轧制不好
开箱后,钢卷开始出现扁卷(约500mm),卷不起来。
彩涂seel平辊
如何防止坍塌
生产工艺
一是除用户指定的水平包装外,为防止粘漆,最好采用垂直包装,而彩辊的运输和装卸也需要垂直。
两个。按一定程序设定卷取张力(锥形卷取张力)。
三是按一定程序控制涂料的烘烤温度和冷却温度。
储存
一个。水平包装的成品彩涂卷不得相互叠放,防止粘漆和卷塌;
当压花产品被提起时,必须使用纸套。
三个。压花产品必须垂直包装。
运输过程
水平包装钢卷堆放的两端必须放置三角木,防止运输过程中滚动。
彩涂板经长距离水平输送或长时间挤压后,容易产生粘漆。
案例一
线圈生产后3个月开箱使用,安装6个月(镀铝氟碳锌),表面出现大面积变色和腐蚀。使用半年后,墙上堆积了一大片黑色灰尘,可用餐巾纸擦去。墙上的白点是手印和脚印,应该在安装时留下。白斑的颜色是正常的玉白色。墙上的黑灰是在安装前堆积起来的。由于外部因素的影响,清洗后可以去除白点和铁锈。
彩钢板-锈
案例二
两个月后安装的屋顶上有大量漂浮的铁锈颗粒;屋顶上有较多的抽芯铝锚钉已开始生锈;用硬币刮去铁锈点,露出底漆和镀锌层,未发现铁锈点;加工过程中屋顶有一部分被薄膜覆盖,薄膜上也有较多的锈斑,将薄膜剥落露出彩涂板,未发现锈斑。经检验,彩涂钢板符合出厂标准。锈点是由附着在钢板表面的小金属颗粒缓慢腐蚀引起的。
彩钢板-锈斑
如何预防生锈
注意事项
一个。根据使用环境(腐蚀性大气、温度、阳光)正确选择材料。普通聚酯涂料不能在化工厂使用,在使用碱性介质时,应慎用镀锌、镀铝锌彩板等。
两个。切口应尽量放在隐蔽处,不得外露,所有切边应妥善保护。
三个。不应被水浸泡,应存放在室内,避免露天堆放。
四个。在切割和焊接过程中,板表面不应留下金属屑。施工结束后,用水彻底清洗。一般来说,每月6次清洁一次,沿海和工业污染区应更频繁地清洁。

In the production process of color coated steel plate, the problem of collapse occasionally occurs, which will bring great trouble to the production. According to the analysis of experts, the main reason for the formation of collapse is that the friction between layers of steel coil is relatively small. Through the experimental measurement, the maximum static friction coefficient between layers of different kinds of color coated steel plate is determined, and the causes of collapse of different kinds of coating are compared and analyzed from the micro point of view Combined with the case of collapse, the preventive measures are given.

The edge roll is uneven and easy to loosen, and the sandwich plate is easy to deviate.
The edge of color coated steel plate is not well rolled
After unpacking, the steel coil begins to appear flat coil (about 500mm ), unable to roll up.
Color coated seel flat roll
How to prevent collapse
Production process
One In addition to the horizontal packaging specified by the user, in order to prevent paint sticking, it is better to use vertical packaging, and the transport and loading and unloading of color rolls also need to be vertical.
Two . set the coiling tension (taper coiling tension) according to certain procedures.
Three Control the baking temperature and cooling temperature of the coating according to certain procedures.
Storage requirements
One . the finished color coated rolls of horizontal packaging shall not be stacked over each other to prevent paint sticking and roll collapse;
Two The paper sleeve must be used when the embossed products are taken up.
Three . the embossed products must be packed vertically.
Transportation process
Triangle wood must be placed at both ends of horizontal packing steel coil stacking to prevent rolling during transportation.
After long-distance horizontal transportation or long-time extrusion, the color coated plate is easy to get sticky paint.
rust
case One
After coil production Three Months open package use, installation Six Months (aluminized zinc Fluorocarbon), a large area of discoloration and corrosion appeared on the surface. After half a year's use, a large area of black dust has accumulated on the wall, which can be wiped off with napkin. The white spots on the wall are handprints and footprints, which should be left during installation. The color of the white spots is the normal jade white color. The black ash on the wall was piled up before installation. Due to external factors, white spots and rust can be removed after washing.
Color coated steel plate - rust
case Two
On the installed roof Two Months later, there were a large number of floating rust particles; there were more core pulling aluminum anchor nails on the roof that had begun to rust; the rust spots were scraped with coins to expose the primer and galvanized layer, and no rust spots were found; a part of the roof was covered with film during processing, and there were also more rust spots on the film, and the film was peeled to expose the color coated plate, and no rust spots were found. It is confirmed that the color coated steel plate meets the factory standard. The rust point is caused by the slow corrosion of the small metal particles adhered to the steel plate surface.
Color coated steel plate - Rust spot
How to prevnt rustin
matters needing attention
One . select materials correctly according to the use environment (corrosive atmosphere, temperature, sunlight). The ordinary polyester coating can not be used in the chemical plant, under the use of alkaline medium, careful use of galvanized, aluminized zinc color plate, etc.
Two . the incision shall be placed in the concealed part as far as possible without being exposed, and all cutting edges shall be properly protected.
Three . it shall not be soaked by water, and shall be stored indoors to avoid outdoor stacking.
Four . during cutting and welding, there shall be no metal scraps left on the plate surface. After construction, water shall be used for thorough cleaning. Generally speaking Six Clean once a month, and the coastal and industrial pollution areas should be cleaned more frequently.

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