Castings made of conventional aluminum alloys are either damaged or destroyed, which leads to the formation of narrow gaps (with a length of up to 50 mm and in the form of parallel lines or corrugations). These gaps have a tendency to widen when they are subjected to the action of external forces. Crack is the name given to this imperfection.
1. to bring about
The aluminum material has an abnormal composition (for example, the magnesium content is too high), which improves the mold adhesion. This is because the magnesium content is too high. Cracks will appear in the drawing mold if it is of sufficient severity even if the composition of the aluminum alloy does not change. In the case of aluminum castings, this will also cause cracking, and the institutions in the surrounding area have clearly shrunk. Due to the different cooling sequence that occurs during condensation, the outer area contracts first. This results in an outward tensile stress at that point, which in turn aluminum alloy die casting creates cracks at the part of the structure that is contracting.
2. Improvement measures
Correct treatment of aluminum alloy composition, pure aluminum can be added to the aluminum alloy under certain conditions in order to reduce the magnesium content in the aluminum alloy or the problem of adding aluminum and silicon in the aluminum alloy profile, which results in an increase in the silicon composition;Excessive temperature, through the use of water cooling to dissipate heat, improvement of the cooling channel in this area, reduction of the temperature of the mold in this area, while simultaneously maintaining the thermal cycle of the mold;Altering the structure of the aluminum alloy casting, increasing the arc, modifying the draft angle, and decreasing the difficulty factor of demolding are all things that need to be done. Reduce the difference in wall thickness that exists between the various aluminum castings that are produced, and either change or improve the extrusion part, so that the pressure bearing capacity of the extrusion is consistent throughout, and remove some of the excessive force.
Metals such as gold and silver were utilized in a variety of ways throughout history, including in ancient times. When discussing the historical beginnings of the industry of aluminum alloy die-casting, one must look no further than the development of modern civilization.
The technology of die-casting aluminum has developed along with the progression of human civilization. In ancient times, there were other metal applications, such as gold and silver, but from the perspective of the development of casting technology, the process of aluminum alloy die-casting typically includes forming, production range, and assembly of casting molds. In contrast, there were other metal applications, such as gold and silver, in ancient times.
In reality, the term "styling" refers to the process of product prototyping. The process of creating a pattern that is 1:1 scale and conforms to the structural design of the product ordered by the customer is referred to as molding. The casting cavity is obtained by duplicating the model, which is done based on the aluminum casting model, also known as the pattern. After the model slurry has been dried and solidified with the slurry, the casting cavity can be obtained. Masks can be combined using a variety of different modules.
Recently, a friend informed me that in the process of die-casting aluminum alloys, some manufacturers disperse the metal. This begs the question: why does the metal splash?
Next, let's hear it from the experts themselves as to why. When interpreting aluminum alloy die-casting parts, the reason for the metal outer jump is that the fit between the movement and the molding is not tight, the gap between the two is large. Alternatively, the metal outer jump can be caused by an insufficient locking force, the die-casting motive, improper molding and installation, or the metal outer jump can be caused by the insufficient locking force. Movement and molding in parallel, also known as die-casting. Alternately, the support plate may have a large width, and as a result, the pressure may cause the sleeve to deform into the shape of a sprayer. In light of these considerations, in order to carry out the subsequent commissioning, the mold must first be reinstalled. For the housing to be more rigid, the module force should be increased, the die-casting should be adjusted, the mounting plate for the die-casting should be made parallel, and a support plate should be added to the moving template.
The quality of die casting molds is largely determined by how they are heated treated. The preliminary heat treatment, the final heat treatment, and the surface strengthening treatment are all included in the heat treatment of the mold. In the same way, aluminum alloy die-casting plants have to adhere to stringent heat treatment protocols in order to prevent defects such as quenching, poor deformation, insufficient hardness, electrical machining cracks, grinding cracks, and early damage to molds. These flaws can all be avoided by following these protocols.
1. Putting an end to crack defects
The majority of the issues that lead to quenching defects are related to the technology used for heat treatment. These issues include inadequate cooling and an excessive heat treatment temperature. Naturally, this is also connected to the reasons why die steel was chosen as the material and die design was chosen. In order to prevent this flaw from occurring, the aluminum alloy die-casting plant should begin from the very beginning in order to achieve the desired effect of controlling the mold's level of quality.
2. flaws in the surface's hardness
The quenching process is primarily to blame for the hardness defect that was found in the die-casting mold, and there is nothing more to say about it. The factory that die-casts aluminum alloy already has an established quenching aluminum alloy die casting procedure, so there won't be any issues of this kind.
3. Deformation problem
The deformation caused by heat treatment is unavoidable; however, it must be kept under control and within a range that is considered acceptable. That is to say, whether there is an excess of tolerance, but at this stage, there is no mature process to control this, and the aluminum alloy die casting factory can only rely on the experience of the master to control, which is why it is very important to hire a good hand. Specifically,
4. Various other concerns
In point of fact, there are many distinct types of heat treatment issues, but they can all be summarized as other types of issues, specifically those associated with heat treatment technology. In conclusion, it is critical for the aluminum alloy die-casting factory to have a team of masters who are experienced in their field.
The rapid advancement of science and technology, as well as the pressing requirement for modern production, has resulted in an ever-increasing demand for the technology of vacuum heat treatment. This has led to an ever-increasing scope of application for thisThere is no oxidation, no decarburization, degreasing, degassing, good surface quality, small distortion, good comprehensive performance of heat treated workpieces, no pollution, no pollution, and a high degree of automation with vacuum heat treatment technology. Vacuum heat treatment technology has a number of advantages over traditional methods of heat treatment. The unit responsible for the heat treatment should select an appropriate vacuum furnace in accordance with the circumstances, give full play to the benefits of vacuum heat treatment, and are not permitted to use the vacuum furnace as a decoration, which should produce benefits.
