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Operation method of internal mixer!

Operation method of internal mixer!

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  • Time of issue:2020-10-22
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(Summary description)Calculate the primary mixing volume and actual formula according to the capacity of the internal mixing chamber and the appropriate filling factor (0.6~0.7);

Operation method of internal mixer!

(Summary description)Calculate the primary mixing volume and actual formula according to the capacity of the internal mixing chamber and the appropriate filling factor (0.6~0.7);

  • Categories:Company news
  • Author:
  • Origin:
  • Time of issue:2020-10-22
  • Views:0
Information
1. Calculate the primary mixing volume and actual formula according to the capacity of the internal mixing chamber and the appropriate filling factor (0.6~0.7);
2. According to the actual formula, accurately weigh the amount of various raw materials in the formula, and mix the raw rubber, small materials (ZnO, SA, accelerators, antioxidants, solid softeners, etc.), reinforcing agents or fillers, and liquid softeners. , Sulfur are placed separately and arranged in order on the shelf;
3. Turn on the power switch and heating switch of the internal mixer to preheat the internal mixer. At the same time, check whether the wind pressure, water pressure, and voltage meet the process requirements, and check whether the temperature measurement system, timing device, power system indication and record are normal;
4. After the internal mixer is preheated, it is stable for a period of time, ready for rubber mixing;
5. Lift the top plug, put the raw rubber cut into small pieces into the internal mixer from the feeding port, drop the top plug, and mix the rubber for 1 min;
6. Lift the top plug, add small materials, drop the top plug and mix for 1.5min;
7. Lift the top plug, add carbon black or filler, drop the top plug and mix for 3 minutes;
8. Lift the top plug, add liquid softener, drop the top plug and mix for 1.5min;
9. Debinding, use a thermocouple thermometer to measure the temperature of the rubber material, record the initial temperature of the mixing chamber, the temperature of the mixing chamber at the end of mixing, and the temperature of debinding, the maximum power, and the speed of the rotor;
10. Adjust the roller pitch of the internal mixer to 3.8mm, turn on the power switch, make the mixer run, open the circulating water valve, and then throw the rubber discharged from the internal mixer to the top roller of the mixer, and wait for the rubber. When the temperature drops below 110°C, add sulfur, and the left and right cutters twice. When the sulfur is eaten in, the surface of the rubber is relatively smooth, and the rubber is cut.
11. Adjust the roller pitch of the internal mixer to 0.5mm, put in the rubber thin pass, hit the triangle bag, and pass the thin pass 5 times, adjust the roller distance to about 2.4mm, put in the rubber bag roller, and wait until the surface is smooth and without bubbles. Weigh the total mass of the rubber, place it on a flat, clean metal surface and cool it to room temperature, affix a label with the rubber formula number and mixing date, and park it for later use.

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www.300.cn