Spray beams and lubricating fluids are used in the hot rolled aluminum sheet production and processing industry. What is the role of the two in them? Let's briefly introduce
The role of the spray beam during hot rolling production:
The spray beam mainly provides a suitable angle for the cooling and lubrication of the emulsion, ensuring that the emulsion can be evenly distributed on the surface of the roll and the rolled piece, so that the emulsion is cooled evenly and uniformly lubricated, thereby obtaining a uniform plate surface quality. The spray beam is generally divided into two parts, an oil chamber and a nozzle. The nozzle is divided into two functional areas, one for the cooling zone and one for the lubrication zone. The flow rate and angle of the grease nipple and the cooling nipple are different, which is different depending on the equipment capacity. If the angle of the spray beam changes or the nozzle is clogged during production, the color difference of the board surface will be caused, and the aluminum stripe will be stuck, which will seriously cause the winding device to malfunction. Another function of the spray beam in production is to adjust the temperature of the work roll by controlling the flow of the edge and the middle to achieve the effect of adjusting the pattern. Generally, the side flow is small, and the intermediate flow is relatively large.
The lubricating medium during the hot rolling process is an emulsion:
It is mainly composed of water and oil, of which 95% is water and about 5% is oil. The emulsion for hot rolling is an oil-in-water emulsion, that is, the oil is uniformly dispersed in water in the form of small oil beads. In the hot rolling process, the emulsion is sprayed on the surface of the roll, the stable state of the emulsion is destroyed, the high temperature separates the oil and water, the oil adheres to the surface of the roll to lubricate, and the water cools to prevent the temperature of the roll from being too high, causing Adverse reactions. Emulsion, simply said that the main role is cooling, lubrication and cleaning. In the production of emulsions, different products have different requirements for lubrication and cooling. Generally, the purpose of separate control is achieved mainly by adjusting the concentration. Concentration, ie the oil content in the emulsion.
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