1. Why use oil conduction heating technology? Roller sublimation printing machine commonly adopt the design of heating tube inside the tube, heating tube power generation after heat, heat will be around the radiation, the use of heat transfer oil as a medium, high heat transfer efficiency and uniformity. The machine is running, the heat transfer oil is always located in the lower part of the roller and a steady stream of heat transfer to the roller surface. The heat-conducting oil has the property of resisting thermal cracking and chemical oxidation, has good heat-transfer efficiency, fast heat-dissipation and good thermal stability. A very high operating temperature is obtained at almost atmospheric pressure. Which can greatly reduce the high-temperature heating system operating pressure and safety requirements and improve the system and equipment reliability; But the heat transfer oil as a heat transfer medium also has a significant drawback: in the case of system leakage, heat conduction oil and flame encounter when there may be burning, so how to improve the heat transfer oil sealing space welding quality is the key technology of roller printing machine one. 2. What is the composite roller manufacturing technology? The heat transfer oil inside the roller is injected through the oil hole at the end and closed after injection. Because of the limitation of the injection method, the heat transfer oil in the roller can only occupy 50% of the inner cavity of the roller. Resulting in a difference in temperature between the upper roll and the lower roll. To this , Best printing machinery develop composite roller manufacturing technology. A sub-cylinder is welded inside the roll so that an annular region is formed between the sub-roll and the mother roll, which will occupy 75% of the cavity. The temperature difference between the upper and lower portions of the roll is remarkably reduced, and the transfer quality is further controlled. While the number of heating pipe immersed in heat transfer oil also increased, the efficiency of heating has also been significantly improved. 3. Roller diameter and the relationship between the speed of the machine? The same angular velocity, in different diameter will produce different line speed, the greater the diameter, the greater the line speed, which is to improve the transfer speed and efficiency of the most simple way. BEST printing machinery can manufacture 420mm, 610mm, 800mm or even larger diameter roller to meet the stringent requirements of the efficiency of the user. The larger the diameter of the roller is also easy to avoid frequent graphic splicing, reducing labor intensity, which is the user in recent years, the demand for large diameter roller causes soared. The greater the diameter of the roller, the higher the accuracy of the processing equipment, the current domestic production of more than 610mm diameter of the plant can be counted on one's fingers.