Mold manufacturing in the mold temperature control of plastic products have any effect
Mold in the manufacturing process is undoubtedly undoubtedly in the hot and cold temperatures and other forging, these are the focus of mold manufacturing. Only the appropriate temperature control forging out of the mold is qualified mold, and only such a mold to injection of high-quality plastic products.
Mold temperature control and cooling time on the impact of plastic products:
1, the plastic melt injection and mold open cycle time both mold temperature fluctuations in the difference, it should be to minimize the fluctuations in the peak difference.
2, mold heat transfer Mold heat through the mold body and the mold of the media out, the mold is the same, so the control of the media is the key, generally the cooling water inlet and outlet temperature difference is less than 1 ℃, the average Temperature theory to calculate, so to ensure the stability of heat transfer. Media flow and heat transfer are interrelated, you can use the mold surface temperature sensor to control the media flow to compensate for environmental temperature changes caused by mold temperature changes.
3, mold stable state In order to mold the absorption and distribution of heat to maintain balance, injection molding machine injection of the melt should be strictly to maintain a stable temperature. The temperature around the mold has a great impact on the mold, the general will affect the mold medium convection coefficient of change, it is best to set a temperature sensor in the mold surface, at any time to observe the mold surface temperature, and to maintain stability.
4, the heat exchange efficiency changes Mold with a long time, in the cooling water pipeline will appear rust and scale, then the interface of the thermal conductivity decreased, the scale should be promptly removed.
Mold temperature control and cooling time on the impact of plastic products:
1, the plastic melt injection and mold open cycle time both mold temperature fluctuations in the difference, it should be to minimize the fluctuations in the peak difference.
2, mold heat transfer Mold heat through the mold body and the mold of the media out, the mold is the same, so the control of the media is the key, generally the cooling water inlet and outlet temperature difference is less than 1 ℃, the average Temperature theory to calculate, so to ensure the stability of heat transfer. Media flow and heat transfer are interrelated, you can use the mold surface temperature sensor to control the media flow to compensate for environmental temperature changes caused by mold temperature changes.
3, mold stable state In order to mold the absorption and distribution of heat to maintain balance, injection molding machine injection of the melt should be strictly to maintain a stable temperature. The temperature around the mold has a great impact on the mold, the general will affect the mold medium convection coefficient of change, it is best to set a temperature sensor in the mold surface, at any time to observe the mold surface temperature, and to maintain stability.
4, the heat exchange efficiency changes Mold with a long time, in the cooling water pipeline will appear rust and scale, then the interface of the thermal conductivity decreased, the scale should be promptly removed.
