Mold insulation method

Strengthening the heat preservation measures of the mold can reduce the heat loss of the mold, make the mold reach the predetermined production temperature in a short time, and reduce energy waste.

1. Heat preservation measures of heating plate

Asbestos board or asbestos cloth is usually used for heat preservation of heating plate, but asbestos cloth is not easy to lay flat, and it also has a certain influence on the guarantee of parallelism of the pressure plate. There are many types of asbestos board, the most common is rubber asbestos board, but this kind of asbestos board is not the right material for sealing and heat insulation. It has a certain compressibility and it will release a very difficult type at high temperature. The smell affects the operating environment and the health of the operator.

Asbestos cardboard should be used for the heat preservation of the heating plate. The common specification is 1000x1000, 3-5mm thick, the plate body is relatively regular, the parallelism is good, the compressibility is relatively average, and there is no peculiar smell under high temperature.

2. Mould insulation measures

There are many thermal insulation measures for the mold, and aluminum hydroxide thermal insulation cotton can be wrapped with asbestos cloth or glass cloth for thermal insulation. There is also an insulation coating on the market that is currently an ideal material for mold insulation. It is a mixture of medium and long fibers, slurry and a kind of insulation foam material. It has moderate viscosity and is easy to apply. This material is often used as an insulation material for chemical and heating pipelines, and it is slightly alkaline (easy to corrode molds). After use at 150℃, no negative effects such as scorching, melting, smell, etc. were found. At the same time, the material is very light, and the plasticity is strong, and it is easy to form a more beautiful mold surface.

3. Water cooling is the cooling method used by most molds, but it also has its shortcomings; it requires that the pipelines be tightly sealed, and the upper and lower water pipelines must be unobstructed, which wastes water resources. When the cooling temperature exceeds 100°C, steam explosion is likely to occur. The advantage is that the heat capacity is large, and the temperature can be quickly reduced.

Air cooling is an ideal cooling method. It is the opposite of water cooling. It does not require tight pipe sealing, and there is no waste of resources. It can cool molds with a temperature higher than 100°C. The cooling can be determined by the flow of gas. The speed and the source are simple and convenient. A production workshop with a certain scale can obtain a relatively convenient gas source.