"Asia Rubber Expo & India Rubber Technology Exhibition 2020" is jointly sponsored by Aakar Exhibition Company and Zhonglian Rubber Co., Ltd. The exhibition will be held at the Chennai Trade Center...Read More
1. In the extrusion process, the process of converting the material from the glass state to the molten state, in addition to the balance between the heat required for plasticization of the material and the amount of heat supplied, so that the material of rubber extruder machine can complete the ideal plasticization, the melting pressure is also a very important factor. Important control indicators. Because the material is affected by the resistance of the die and the compression ratio of each section of the screw during the extrusion process, it does not exist under normal pressure. For different die, the compression ratio of each section of the screw is basically constant and immutable.
2. Under the premise of constant extrusion speed, increase or decrease the feed rate, the volume of the screw material in the feeding section will change, and the volume of the material in the exhaust section will remain unchanged. The pressure increases or decreases accordingly; under the premise that the feed rate remains unchanged, if the extrusion speed is increased or decreased, the volume of the screw material in the feeding section will also change. The volume of the material in the exhaust section remains unchanged, so the melting pressure of the feeding section and compression section increases or decreases with the change of the compression ratio; the feeding speed increases or decreases simultaneously with the extrusion speed, because the screw material volume of the feeding section is not The change is only the change in the melting pressure caused by the increase or decrease of the speed.