Abstract: A theoretical model for heat balance of rollers during the continuous injection direct rolling process was established according to basic heat transfer theory, and then a simulation analysis was performed for heat balance of the roller. The results indicated that the heat transfer oil could reach the branch pipe in contact with the inner surface of the roller sleeve at a certain inlet flow rate, and no dead point was found. The flow rates kept uniformity from the inlet to the far ends of various tributaries. The temperature of roller surface was homogeneous with a deviation of 3 ℃ after the heat transfer oil was passed through. The design of oil channels is reasonable, and it can effectively adjust the temperature of the rollers.

Key words: continuous injection direct rolling, roller, heat balance, polymer