Industrial Aluminum Extrusion hardness is too low reason
Resulting in Aluminum Extrusion hardness is too low a few factors to help you find the cause, as soon as possible to improve the hardness of industrial Aluminum Extrusion.
In fact, can affect the industrial Aluminum Extrusion hardness factors are many, a little bit of local attention may cause industrial Aluminum Extrusion hardness is too low. In this regard, Hua Jian that should be considered from the following aspects:
1, industrial Aluminum Extrusion temperature setting and control. Under normal circumstances, the actual temperature and the apparent temperature or there is a certain error, so we must set the table temperature according to the actual temperature of the furnace to set, and pay close attention to the temperature fluctuations.
2, industrial Aluminum Extrusion aging insulation. In this regard we have to strictly in accordance with the requirements of the process to set the time limit, the insulation time to be appropriate to prevent the lack of time or over time caused by the hardness of Aluminum Extrusion is not enough.
3, industrial Aluminum Extrusion extrusion frame can not be too dense, there should be between the material and the interval between the industrial Aluminum Extrusion, especially non-ventilated small material, thick material interval is greater, pipe material and small materials, When the sheet material is fitted with a frame, the tube is placed in such a way that it is advantageous for the periodic circulation of the air.
Aluminum Extrusion heat treatment is a process in which aluminum extruded products are heated in a certain medium to a suitable temperature, and aluminum is extruded at this temperature for a certain period of time and cooled at different speeds. Aluminum Extrusion heat treatment is one of the most important processes in the production of materials. Compared with other processes, heat treatment generally does not change the shape and overall chemical composition of the workpiece, but by changing the internal microstructure of the workpiece or changing the workpiece Of the surface of the chemical composition, to give or improve the use of the workpiece performance. Which is characterized by improving the intrinsic quality of the workpiece, which is generally not visible to the naked eye.
Annealing refers to the heating of the workpiece to the appropriate temperature, according to the size of the material and the workpiece with different holding time, and then slow cooling, the main purpose is to reduce the hardness of the material to improve the plastic, in order to facilitate the subsequent processing to reduce residual stress, Organization and composition of the homogenization. Annealing is divided into recrystallization annealing according to the purpose, stress annealing annealing annealing, complete annealing and so on.
Industrial Aluminum Extrusion manufacturers analysis, normalizing the workpiece is heated to the appropriate temperature in the air after cooling, normalizing effect similar to annealing, but the organization is finer, often used to improve the cutting performance of materials, and sometimes used for For some less demanding parts of the final heat treatment. Quenching is the workpiece after the heat insulation, in water, oil or other inorganic salts, organic water quenching medium in the rapid cooling. After quenching the material for the unbalanced organization, usually very hard and very brittle, need to be higher than room temperature at a certain temperature for a long time insulation, and then cooling, this process called tempering.
As can be seen from the above definition, industrial Aluminum Extrusion whether it is annealing, normalizing, quenching or tempering, heat treatment process should be the workpiece heating, insulation and cooling. Therefore, the Aluminum Extrusion heat treatment, heating speed, holding time and cooling rate of heat treatment process to become the most important process parameters.
From the process itself, with a very high scientific and technological composition, the deployment of different colors of paint, resulting in different colors of the decorative effect, more in line with the needs of interior decoration, but also with Dongguan Aluminum Extrusion in the construction industry to the indoor development Trend consistent. In particular, the combination of spray profiles and insulated bridge, so that it has a more fashionable trend, so that powder coating profiles with a greater space for development, but also other processing methods can not be replaced by the profile.