The mold insulation board is made of composite material with low thermal conductivity, designed specifically for the mold industry, with both heat insulation and pressure resistance. Place the insulation board between the top mounting plate and the fixing plate of the mold or between the injection base and the moving platen of the injection molding machine in order to reduce the heat transfer from the mold to the mounting plate (the direction of transmission depends on the type of the mold) to stabilize the mold The temperature of the cavity surface ensures product quality, reduces heat loss, and extends equipment life. Next Xiaobian introduced mold insulation board identification methods and mold insulation board purchase.
Mold insulation board identification method
1, see the thermal stability of mold insulation board
High temperatures can cause degradation of the organic components inside the insulation. Therefore, high-quality insulation board materials need to stand the test of high temperature and high pressure repeated for a long time, and continuously resist the thermal stress and mechanical stress inside the system. In general, high-quality mold insulation board materials usually have 3- The average service life of 5 years.
2, see the thermal conductivity of the mold insulation board
This is the most important technical parameter of the mold insulation board material, which represents the insulation effect of the insulation material. The lower the thermal conductivity, the better the thermal insulation of the material.
3, see mold insulation board in the long-term high temperature and high pressure environment is not deformed
Most of the main components of insulation materials are organic polymers. Organic materials are generally more ductile than inorganic materials and are not susceptible to cracking when subjected to thermal stress. However, in a high-temperature environment, the thermal stability of organic materials degrades with time, that is, although organic materials do not instantaneously soften, fracture, and melt, their lifetime decreases with increasing temperature. The dimensional stability of the material subjected to long-term thermal stress is an important reference for the selection of thermal insulation panels. In general, materials with good thermal stability have less than 1% deformation after being subjected to 5000 hours of high temperature.
4, see mold insulation board in the highest application temperature compressive strength
In general, the compressive strength of the insulation board material is measured at room temperature. As the temperature increases, the compressive strength of the material drops dramatically. When selecting the insulation board material, engineers need to refer to the compressive strength when setting the application temperature. For example, the highest application temperature of an organic material is 350 degrees. If its compressive strength at room temperature is 300 MPa, its compressive strength at 350 degrees will drop below 100 MPa. On the contrary, if the highest application temperature of an inorganic material is 1500 degrees, its compressive strength at room temperature and 1500 degrees is nearly equal, and the difference is negligible. When selecting the mold insulation material, the mold engineer needs to select the best cost-effective insulation board according to his own process requirements, such as temperature and pressure.
5, see mold insulation board water absorption
Absorption can negatively affect the performance of mold insulation board materials for two reasons: First, when the temperature is higher than 100 degrees Celsius, materials with higher moisture content will generate higher vapor pressures, causing the material to crack. This phenomenon is common in materials with a moisture content of more than 10; second, water absorption can affect the thermal insulation properties of the material. Dry materials have a lower thermal conductivity than wet materials. During the cooling phase of the system, the phenomenon of water absorption by the material causes the system to heat up again and the evaporation of water consumes additional heat.
6, see mold insulation board tolerance
Fiber-reinforced materials are far superior to metal materials in terms of dimensional stability. Of course, the mold insulation board material can not be kept absolutely deformation, therefore, engineers choose insulation board, have strict requirements on tolerances. It must be emphasized here that in most cases, the use of insulation boards is much hotter than room temperature. The deformation of the mold insulation board material is not caused by thermal expansion, but due to drying, curing or oxidation of the material.
Mold insulation board
1, see the brand
The current products are mixed, and many manufacturers see which products go to which products to make money. For a product such as a mold insulation board, when selecting a mold insulation board, it is necessary to select a professional and branded product.
2, see the quality
Quality is directly related to the user's feelings of use. Therefore, the users value the role of quality when they purchase. Many companies have excellent product quality, and many companies use substandard products in the industry.
3, see energy efficiency
The biggest advantage of mold insulation board is to improve the production efficiency of the molding process, energy saving, and environmental protection. This is an important reason why users choose the mold insulation board, so when choosing, it is natural to choose energy-saving and environmental protection mold insulation board .
4, see the service life
Ordinary heat shields on the market, such as bakelite boards, will be significantly deformed after permanent; heat shields with poor heat resistance will be carbonized or stratified over time. Therefore, the choice of a good mold insulation board has a long service life, generally 3 to 5 years, to avoid mold makers often replaced.
Editor's summary: The identification method for mold insulation panels and the purchase of mold insulation panels are introduced here. We hope to help everyone. If you want to know more related information, you can pay attention to this website information.
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