How to control the temperature of metal powder injection molding

In the process of metal powder injection molding, the control effect is generally very good. However, for the process of multi-zone heating zone interaction, a model-based multi-zone control may be more effective in reducing temperature overshoot and thermal hysteresis, which has a very good effect on the whole production. Therefore, it is necessary to properly control the temperature. Today daihong new material small make up for you to introduce how to control the temperature of metal powder injection molding, I hope to help you!

There are many types of multi-zone heating system, including furnace, heating plate, extrusion or injection molding equipment. In general, temperature feedback control is used to control or drive the processing temperature required by these systems, so effective temperature control is a challenge. In these types of systems, interactive zones are created because each zone is unaffected by the surrounding zone. In these applications, simple control is not an effective regulator.

MIM experts consider a used to control the temperature of the load double heating roller, it has two heating area are arranged in concentric circles and corresponding temperature sensor, the position of the heater and sensor to create a dynamic coupling, multi-input and multi-output system, one of the heated area affect performance in two sensors, in practice, the pressure plate to operation adjustment under different temperature and load disturbance due to the entry and exit of the load.

MIM industry leading manufacturers introduce control multizone systems that may compromise on some performance requirements because a zone setting will have an impact on the need to select controller gains that are significant in deployment time. At the same time, the response speed should be reduced to avoid interaction, there are adjacent loops and corresponding heaters, thus controlling the possible loss. In addition, the response time should also be reduced to load quality changes. MIM technology is necessary to design a custom feed forward control element to take load input.

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