The purpose of the appearance treatment that is applied to aluminum alloy die castings is to select the appropriate technology in accordance with the specific requirements, and then to obtain the high-quality film layer that satisfies those requirements. In light of the fact that the various existing techniques for processing appearance still have their own issues, in order for us to accomplish this goal, we should first gain an understanding of the primary challenges presented by the various processing skills.
1. The special weight of light magnesium alloy is 68% of the weight of aluminum alloy, 27% of the weight of zinc alloy, and 23% of the weight of steel. This makes it the lightest of all structural alloys. As a result, magnesium alloys are appropriate for use in the production of components for automobiles and locomotives, as well as mechanical parts, packaging for 3C products, building materials, and other products.
Excellent electromagnetic protection The metal casing of mobile phones and personal computers can provide excellent electromagnetic shielding.
In general, lightweight computer housings are fabricated from plastics that do not support electromagnetic shielding and require rework or painting in order to meet the requirements for electromagnetic shielding. The electromagnetic interference can be completely absorbed by the magnesium alloy shell die casting mould, which is more than 100 dB. Power consumption in a laptop that is typically between 20 and 30 watts is associated with having excellent thermal conductivity and thermal spread. As a result, one must take into account heat conduction as a component of system stability.
The temperature of the central processing unit (CPU) on the laptop reaches its maximum.
Because of this, it is essential to stop the central processing unit (cpu) from getting too hot in order to stop the computer from getting too hot overall. When designing a laptop, engineers typically choose to cool the system using heat pipes and fans. However, if the central processing unit (CPU) is upgraded frequently, this method will not be effective in lowering the temperature of the system, which will lead to design problems. Consumption of power is one example, as is a lack of available space. Recent test reports suggest that overheating issues can be mitigated by using magnesium alloys. This is due to the fact that magnesium alloys are one hundred times more thermally conductive than plastics.
2. Magnesium alloys with high impact resistance and high stiffness have multiple advantages to their favor. It's important to note that despite being significantly stronger and stiffer than steel, it's also lighter than steel. The following is the result of the impact resistance test performed on the magnesium alloy laptop case, as stated in the test report:If the laptop containing the No. 2 magnesium alloy case is dropped from a height of one meter with the magnesium alloy case still intact, the magnesium alloy case has a weight of five pounds and is indestructible. Because it serves to protect the internal components, the alloy casing develops cracks.
3. The corrosion resistance of magnesium alloys, as measured by the salt corrosion test, is eight times higher than that of carbon steel, four times higher than that of aluminum alloys, and ten times higher than that of plastic materials. Alloys have superior resistance to corrosion compared to other materials.
4. Beautiful texture. Since the turn of the last century, people have possessed a metallic sheen and texture, both of which ought not to be removed. There are many brands and models of mobile phones that have shells made of metal, but the gloss of metal and the texture of metal are two distinct qualities that cannot be confused with one another.
Industrial designers are unable to ignore the fact that magnesium alloy silicon alloy has a good appearance and texture because it is a metal.
5. Despite the fact that plastic is more affordable aluminum die castings than magnesium, Cost believes that a laptop case made of plastic needs to be thicker (over 2 millimeters) in order to maintain its strength. As a result of use, the temperature on the inside of the object rises, and the plastic produces a softening effect; however, this is not sufficient to achieve the desired level of supporting strength. The designers were forced to keep adding metal in order to protect the internal components and to support the frame, which was made of plastic. In order to provide excellent EMI capabilities, engineering plastics still need to be electroplated or metalized after the molding process. The use of plastic enclosures is already relatively expensive, but these processes drive up the price even further.
The exterior of the magnesium alloy shell can have a thickness of between 0.35 and 1 millimeter, and it can be painted or plated. Although the price may be higher than that of plastic in some circumstances, we have professional production management, which ensures that we do not fill screws, do not support stainless steel, and do not use conductive paint. The price is comparable to that of plastic. Zinc alloy is a low-cost material that can provide added value to the appearance and image of high-tech products. This is in contrast to aluminum alloy, which is a relatively expensive material.
6. Plastic products that were designed to be environmentally friendly have reached the end of their useful lives; the majority of these products cannot be recycled, and they will continue to be garbage and waste for the next million years. The concerns of environmentalists have been brought to light as a result of this. Laws are being passed in an increasing number of nations that place limitations on the use of plastics and make it possible for manufacturers to recycle plastic goods after they have been discarded. In contrast to magnesium alloys, it can be recycled in its entirety, and the value of the recycled material is ten times higher than that of steel products. When the sector has reached a certain level of development, recycling plants will get rid of the products that have been used. As a result, there are many positive effects that result from the utilization of magnesium alloys for consumers.
Plastics can be manufactured with thicknesses of less than 2.54 millimeters, making them suitable for use in the construction of ultra-thin aesthetic designs. Typical thicknesses for ultra-thin materials range from 0.35 to 1 millimeter. This level of thinness is difficult to accomplish in plastic, and the light shell made of aluminum alloy has a thickness that is greater than 2 millimeters. It is possible for the magnesium alloy shell to have a thickness of less than 1 millimeter. As a result, magnesium alloys are able to effortlessly maintain an overall shell thickness of 2.54 millimeters or less. As a result, magnesium alloy casings are utilized in a significant number of ultra-thin laptops and mobile phones.
Within the 3C industry, the excellent magnesium alloy die-casting manufacturing technology that we have developed is the technology die casting aluminum that is driving the development trend of the application of magnesium alloy exterior materials and magnesium alloy internal structural materials.
Magnesium alloys are becoming increasingly widespread as a result of the growth of industry and the increase in productivity. Additionally, a variety of design and appearance technologies have reached a mature stage and are utilized extensively.
Applications in the non-flammable electronic industry take engineering plastic combustion into consideration.
The melting point of magnesium alloys, on the other hand, reaches 427 degrees Fahrenheit, making them significantly less flammable than plastics, particularly when used in automobile parts and building materials, where they can prevent instantaneous combustion. Stable resourcesMagnesium is the eighth largest reserve in the earth's crust. This is due to the fact that the vast majority of magnesium's raw materials are extracted from seawater, making the resources reliable and abundant, and ensuring that there will never be a shortage of magnesium.
