Industrial Aluminum Profile heat treatment has four fire, respectively, annealing, normalizing, quenching and tempering.
Aluminum Profile Heat treatment is a process in which the Aluminum Profile is heated to the appropriate temperature in a certain medium, and the Aluminum Profile is cooled at a different speed for a certain period of time. Aluminum Profile 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 Surface chemical composition, to give or improve the use of the workpiece performance. Which is characterized by improved internal 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.
Industry Normal Profile analysis, normalizing the workpiece is heated to the appropriate temperature in the air after cooling, normalizing effect similar to annealing, but get the organization more thin, often used to improve the cutting performance of materials, and sometimes for the right Some of the 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 Profile whether it is annealing, normalizing, quenching or tempering, heat treatment process should be the workpiece heating, insulation and cooling. Therefore, in the heat treatment of Aluminum Profile, the heating speed, the holding time and the cooling rate become the most important process parameters in the heat treatment process.
Resulting in Aluminum Profile hardness is too low several factors to help you find the cause, as soon as possible to improve the hardness of industrial Aluminum Profile.
In fact, can affect the industrial Aluminum Profile hardness factors are many, a little bit of local attention may cause the industrial Aluminum Profile hardness is too low. In this regard, Hua Jian that should be considered from the following aspects:
1, Industrial Aluminum Profile 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 in accordance with the actual temperature of the furnace to set, and pay close attention to the temperature fluctuations.
2, Industrial Aluminum Profile. 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 aluminum Profile hardness is not enough.
3, industrial aluminum Profile extrusion frame can not be too dense, there must be between the material and the interval, the industrial Aluminum Profile, especially the non-ventilated small material, thick material interval is greater, pipe material and small materials, sheet When assembling a box, the tube is placed in such a way as to facilitate the regular circulation of the air.
The technology level of Aluminum Profile has been increasing, such as powder coating, fluorocarbon coating, organic and inorganic dyeing, electrophoretic coating, mechanical and chemical polishing, surface drawing and other advanced technology has long been widely grasped in the industry. At the same time, wood grain transfer processing, heat insulation profiles and other new technologies have begun to widely used, effectively enhance the Aluminum Profile products, energy saving, environmental effects.
With the continuous improvement of industrial profiles, varieties continue to enrich, many new processes are also emerging, leading the industry trend, online quenching technology is a typical representative.
Industrial Aluminum Profile company analysis, compared to the traditional quenching process and equipment, the process and its equipment mainly has the following advantages: no special quenching equipment and plant, with a small footprint, less investment characteristics; simplify the process, Shorten the production cycle; can achieve a high sensitivity to quenching aluminum alloy quenching, such as 6061,2 series, 7 series and so on. Quenching effect is good, excellent mechanical properties.
On-line quenching and quenching process, not only at home and abroad, but also on the current online quenching a major breakthrough, the device and the process for all heat treatment to strengthen the aluminum alloy, its characteristics are also very consistent with the current national promotion of high efficiency, low cost , Low energy consumption, short process, environmentally friendly aluminum processing new technology, the new direction of the new technology.