When using an aluminum liquid cap filter mesh, the temperature is a factor that needs to be controlled. The aluminum liquid itself has a certain amount of heat. When passing through the aluminum water filter, if the temperature is too high, it will definitely cause some damage to the filter, thereby reducing the service life of the filter. Therefore, it must be within the operating temperature range of the filter. Use a filter inside. What is the operating temperature of the aluminum liquid cap filter mesh? The following SEFU to introduce to you.
A factor that needs to be considered in the use of molten aluminum cap filter mesh is temperature. The use temperature of aluminum water cap filter is divided into working temperature and softening temperature.
The working temperature of the aluminum water filter is 700~800℃, and the softening temperature is 900℃.
We need to choose a suitable filter according to the different pouring temperatures of the molten aluminum. Instead of letting the working temperature of the filter in turn affect the pouring temperature of the molten metal. This will cause more casting defects and lose the meaning of filtering.
• The initial temperature of molten aluminum is too low.
This is the more common reason. It can make the pouring temperature too low. Before pouring, the molten aluminum is transported and stayed in the open ladle for a long time to dissipate heat. Heat loss can be significantly reduced by using a ladle cover with thermal insulation.
• The design of the gating system is unreasonable.
In addition to the low initial temperature of molten metal pouring, the reason for the low-temperature defect of the aluminum water filter is that the design of the pouring system is unreasonable and the heat dissipation is too fast. Or there is no preheating treatment, so that the molten metal drops sharply in the process of entering the cavity, etc.
• Operation error.
The reason for the high-temperature defect of the aluminum water filter is generally due to calculation or machine operation errors, which makes the initial overheating temperature reserved too high. Less common. Trying to ensure that the casting process is detailed and standardized is the main way to solve the problem.
• Do not exceed the filter operating temperature
From the perspective of filtration, the glass fiber aluminum water filter has a certain working temperature and softening temperature. If the limit of the working temperature is exceeded, the filter will lose its original performance due to overheating and softening, and it will not function as a filter. Therefore, the working temperature of the filter must not be exceeded.
• Melting with induction furnace
In production, the use of induction furnace smelting can better control the temperature of molten metal. To reasonably control the pouring process, we must clearly consider the time required for each step. Avoid waiting too long for a step to cool down. This requires the molten metal to have a certain overheating temperature at the beginning, and pay attention to heat preservation at all times during the pouring process.
• Increase the temperature of molten aluminum
It is necessary to increase the melting temperature of molten aluminum as much as possible. Appropriate sedation to facilitate the floating and aggregation of non-metallic inclusions. Clean the slag on the surface of the molten aluminum, and put a covering agent on the surface of the molten aluminum to prevent the molten aluminum from oxidizing. Select the appropriate pouring temperature, try not to be lower than 1350 ℃.
• Shorten setting time
In general, the higher the pouring temperature, the greater the tendency for graphite to float. This is because the long-term liquid state of the casting is conducive to the precipitation of graphite. The study found that if the solidification time is shortened, the tendency of graphite to float decreases as the pouring temperature increases.
The use temperature of aluminum liquid cap filter mesh is divided into working temperature and softening temperature. In the case of grasping a reasonable pouring time, the suitable working temperature of the filter screen is very reasonable for the casting. After all, the filter screen was designed to reduce the scrap rate of castings.
SEFU company specializes in the manufacture of various filters such as molten aluminum. The filter mesh has low gas generation, high-temperature resistance, and high strength. If you need it, please leave a message on the website or contact [email protected] for details.