Do you know the characteristics of the hot roller used in chemical fiber spinning?

Hot draft roll is the core equipment of high speed spinning.

In order to heat the surface of the hot roll evenly, the hot roll is equipped with a liquid medium. The thermal medium in the hot roller is heated by electric induction and then vaporized. The heat medium steam makes the surface temperature of the hot roll uniform, and the temperature change is generally ±1℃.

Hot roll manufacturing technology is very difficult, mainly concentrated in four aspects:

First, the processing accuracy, such as the required surface radial runout of less than 0.02mm, the surface radial runout of the hot roller is less than 0.005mm;

2. Vibration during high-speed rotation and cooling of high-speed bearings;

Third, the problem of heat medium and its filling method;

Four, hot roller surface treatment problems;

The domestic breakthrough in the national blank research and development and successful commercialization is the hot roll technology research and development center under the China Textile Science Research Institute, which can be matched with domestic spinning machine equipment and the transformation of imported equipment, the main key components: high-speed hot roll motor, induction heater, rotary temperature transmitter, high-speed wire guide disk have unique technology. Its characteristics are concentrated in: using the principle of heat pipe to develop large-diameter elongated multi-cavity cavity guide, overcome the technical problems in the mass production of long and thin hole protection treatment, and make the working area of the guide coil from 80mm-2500mm; Using high speed rare earth permanent magnet synchronous motor and samarium cobalt as the permanent magnet material of hot roll motor, the key problems such as motor running vibration and high speed bearing life are solved. On the basis of the original technology, the non-contact rotary temperature transmitter can further improve the anti-temperature drift and anti-interference ability of the circuit, especially in the harsh environment, it can meet the reliability and stability of long-term use.

Vibration and cooling of high-speed bearings;

Third, the problem of heat medium and its filling method;

Four, hot roller surface treatment problems;

The domestic breakthrough in the national blank research and development and successful commercialization is the hot roll technology research and development center under the China Textile Science Research Institute, which can be matched with domestic spinning machine equipment and the transformation of imported equipment, the main key components: high-speed hot roll motor, induction heater, rotary temperature transmitter, high-speed wire guide disk have unique technology. Its characteristics are concentrated in: using the principle of heat pipe to develop large-diameter elongated multi-cavity cavity guide, overcome the technical problems in the mass production of long and thin hole protection treatment, and make the working area of the guide coil from 80mm-2500mm; Using high speed rare earth permanent magnet synchronous motor and samarium cobalt as the permanent magnet material of hot roll motor, the key problems such as motor running vibration and high speed bearing life are solved. On the basis of the original technology, the non-contact rotary temperature transmitter can further improve the anti-temperature drift and anti-interference ability of the circuit, especially in the harsh environment, it can meet the reliability and stability of long-term use.