Your Questions and Comments are Important to Us.
Contact Us
Fill in the Following Form, or Reach Us by Phone or E-mail.
The technical requirements of A for aluminum substrate.
To make the PS version of the aluminum plate base is the most basic technical requirements for normal smooth level off, if no scratches, pits, impressions, golden shoe press in, apparent defects such as porosity, rolling stripe, thickness, wave control within 1 mm, straightness is less than 2 I;The tissue is fine and uniform, without segregation and slag, the internal stress is divided by symmetry and homogeneity.The roughness Ra value is less than 0.28 to ensure that the electrolytic sand is fine and uniform.At present, the large number of plate base materials used in China are 1050A, 1060, etc.
B alkaline cleaning
Often, the aluminum sheet provided by the aluminum processing plant, its surface with a certain amount of oil, oil, and oxidation film has influence to the sand mesh processing, commonly used in the PS version of production hot alkali wash aluminum surface treatment.
The oxide film and oil are usually removed with lye.It is commonly used in the mixture of sodium and sodium gluconate, sodium gluconate, polyoxyethylene ether and other surfactants.
In addition to the oil temperature control at about 55 ~ 60 ℃, usually oil removal effect is related to the temperature of the solution.If the temperature is too high, then the people will be severely corroded by the aluminum plate, so the temperature must be controlled.
The time for oil removal must be carefully compared and finalized.Because it has to do with a variety of different production lines.The drum production line is related to the speed of the production line. Take 4m/min as an example. The oil time must be in 20s, and the effect can be guaranteed.
In addition to the oil must pay attention to update, because in the process of oil removal generates a lot of saponification, emulsification and aluminium salt, their effects on the existence of the oil removal effect, and prevents the aluminum plate surface oil saponification and emulsification, when found the degreasing effect is not strong, must be updated in a timely manner.Normally, if the circulation is carried out through a base pump, the oil removal can be maintained for a long time. If not, the update time will be shortened.
The easiest way to check for oil removal is to use water.The surface water of the aluminum plate with good oil effect is evenly dispersed. If the water is poured, the surface of the aluminum plate is beaded, which indicates that the oil removal is not good.In addition to the oil temperature should always be noticed, except oil temperature too low, may cause oil removal.
C acid
In the process of production, there is a nitric acid pickling process after alkali washing, which is to remove residue after alkali washing and neutralize residual lye.The concentration of nitric acid solution is 5% ~ 10%.When preparing, carefully pour the nitric acid into the water and mix well.In the process of pickling, we should always pay attention to the analysis of the concentration of the solution.
center
Fill in the Following Form, or Reach Us by Phone or E-mail.
