In DEC, HOT SALES, Pakistan customer order 200pcs zinc plates.

In DEC, HOT SALES, 200pcs zinc plates are packed for delivering to our customer in Pakistan.High quality zinc plates with good packing.

Zinc plate making process

　　 1. Corrosion operation process

　　After the printed zinc plate is repaired, first use 3Be°dilute nitric acid solution to remove the surface oxide film so that the graphic on the layout reveals a clear and bright zinc quality. The layout can be cleaned up and should not be too heavy to prevent the micro graphic parts from being corroded and contracted or even corroded. After cleaning the film, clean the layout with water and apply a layer of anti-pitting liquid to get on the machine.

　　 Anti-numbing liquid is 25Be°Acacia gum or 100g sodium nitrate,******200ml, water 500ml (add water to 10Be°when used).

　　 2. Corrosion solution preparation and condition setting

　　 The formulation of the corrosive solution: the range of nitric acid is 8-11.5Be° (that is, the content is 10.2-14.5%), the amount of domestic additives is slightly more than 700-1000ml, while the amount of additives in the United States, Japan and other countries is less 550-600ml.

　　According to the US additive specification: nitric acid is 11-11.5% (8-9Be°), and the additive is 2.8-3% (that is, 1100-1200ml). The temperature is 28°C and spray etching is used. However, our country adopts agitated corrosion, and the use of imported additives requires certain adjustments to the ratio of the corrosive liquid and operating conditions to suit the production conditions of the factory.

The domestic use of imported additives generally takes half of the formula, namely 550-600ml, to solve the slope protection problem by increasing the temperature without enhancing the protection of the slope (28-30℃) and reducing the number of revolutions by 250-300 revolutions, in order to save raw materials and plate making The problem of lack of concentration.

　　 The amount of domestic additives used is large, the temperature is slightly lower than 22-25 ℃, and the number of revolutions is slightly higher than that of 290-350. The time is generally 15-17 minutes. The depth is 0.6mm, and the slope angle is 110-120°.

　　 Three, common fault diagnosis

　　1, side wall:

　　 (1) The edges of the graphics and text are smooth, bright, and the slope is large.

　　 (2) The edges of the graphics and texts are hairy, dark, and the slope is small.

　　 (3) The edges of the graphics and text are hairy and cut inside, the layout is gray, and it is severely lacking acid.

　　 (4) The whole version is cut inside, and the corrosion is shallow and less acid relative to time.

　　 (5) The side wall is cut inside, with less additives.

　　 (6) High speed and low temperature will also cause inset.

　　2. The slope is too big and the small print gap is shallow:

　　 (1) The liquid level is high (normal leaf draft is 10-15mm).

　　 (2) The temperature is high.

　　 (3) The number of revolutions is low.

　　 (4) There are many additives.

　　3, layout hemp sheet

　　 (1) The corrosive liquid is too old and lacks acid.

　　 (2) Too many additives or short mixing time, the corrosive liquid is not fully emulsified.

　　 (3) The temperature is too high.

　　 (4) The number of revolutions is too low.

　　 (5) The baking temperature is too high, and the crystallites of the zinc plate are destroyed.

　　4, layout pitting

　　 (1) The layout is not clean.

　　 (2) The additives and the acid are mixed unevenly, and the stirring time is short (15 minutes or more).

　　 (3) The loading action is too slow, the downtime is long or the anti-pitting fluid is ineffective.

　　 (4) There are impurities in the machine.

　　(5) If the amount of acid is too little, the temperature is too low, and small needle-like pitting clusters will appear.

　　 (6) The quality of the zinc plate is poor, and the quality of the acid is not good.

　　 (7) The baking temperature is too high.

　　 Sell: Copper, zinc, magnesium, stainless steel deep embossing, bronzing corrosion machine.

Our factory is engaged in packaging plate making, copper-zinc-magnesium plate hot stamping plate, copper-zinc plate magnesium concave-convex plate, stainless steel refracting plate, stainless steel mesh deep embossing version, copper mesh deep embossing press version, stainless steel mesh deep embossing press Machine version, and automatic die-cutting machine mesh copper plate deep embossed version, automatic die-cutting machine stainless steel mesh deep embossed version. The workers in our factory have been engaged in the corrosion process for more than 20 years, so please rest assured in terms of technology and product quality.