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The use of oxide brushed aluminum plate
When it comes to brushed aluminum plate, everyone may think it is unfamiliar, but it can be seen everywhere in our lives.
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Paint selection for printing boards
Primer types and film thicknesses. Primers include epoxy resin, polyester resin, acrylic resin and polyurethane resin. Primers are generally selected according to the purpose of the product base, the occasion of use, the degree of processing, and the matching of the topcoat. The film thickness of the primer is usually 5um.
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Color and gloss of printed steel plate coatings
Under normal circumstances, it can be selected according to the standard color of the manufacturer, which can shorten the workload in the early stage of production.
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The development of color-coated board industry
In 1935, the United States established the first continuous coated steel plate line. In the past 20 years, the color-coated plate production industry has developed rapidly with the construction industry as a breakthrough, and the output has continued to increase.
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Typical production process of color-coated board
The whole unit includes the following four parts: inlet section, pretreatment section, coating section and outlet section. The common process flow of the second coating and second baking color coating production line is: uncoiling → sewing → inlet looper → cleaning → pretreatment → primary (fine) coating → primary (fine) curing → cooling → outlet looper → shearing → coiling.
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① Hot-dip galvanized steel sheet. The thin steel sheet is immersed in the molten zinc bath to make a thin steel sheet with a layer of zinc adhere to its surface. At present, it is mainly produced by continuous galvanizing process, that is, the rolled steel sheet is continuously immersed in a galvanized bath with molten zinc to make a galvanized steel sheet;
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(1)抗拉试验： ①性能指标：一般说来，只有结构用、拉伸用和深冲用镀锌板有抗拉性能要求。其中结构 用镀锌板要求有屈服点、抗拉强度和伸长率等;拉伸用只要求伸长率。具体数值见本节“8 ”中有关产品标准; ②试验方法：与一般薄钢板试验方法相同，见“8”所提供的有关标准 及“普通碳素钢薄钢板”所列的试验方法标准。 (2)弯曲试验： 弯曲试验是衡量薄板工艺性能的主要项目，但各国标准对各种镀锌板的要求并不一致，美国标准除结构级以外，其余均不要求弯曲和抗拉试验。而日本则除结构级、建筑波纹板及一般波纹板以外其余均要求作弯曲试验。 要求：一般要求镀锌板弯曲180后，外侧表面不得有锌层脱离，板基不得有龟裂及断裂。
2021-08-03
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