T-Die&Calender Roller
0102030405
Counter parallel twin screw and barrels
Machine description
JWELL manufactured casting film roller strictly according to European professional manufacturing standards. Several steps of welding and heat treatment process are applied to give ensurance to the overall rigidity and reliability of roller structure.
In order to ensure its efficient heat exchange, casting roller flow channel are designed with the special spiral, and through accurate calculation of the coolant flow, the roller surface temperature deviation are reduced to the least possible. It improves the temperature uniformity of the product.
The most important is the precision of dynamic balancing of roller.Specialized large dynamic balance calibration equipment and a variety of balance detection scheme, ensures smooth operation at high rotation speed.
Machine Advantage
1)Material:We adopt 45# seamless steel pipe, alloy steel, precision forgings or rolled round 45# steel pipe
a. Mirror rollers are generally made of 45# steel, alloy steel seamless tubes, precision forgings and other materials, and the surface finish of the roller can reach Ra0.01 (level 14);
b. The roller blank is made of professional imported alloy steel, and different flow channel structure forms are designed according to different material characteristics;
c. Mirror processing can be performed on the surface of various materials to ensure that the straightness, balance, non-roundness and coaxiality of the roller surface meet the requirements;
2)Sand blasting process: It can improve the fatigue resistance of the workpiece, increase the adhesion between it and the coating, extend the durability of the coating film, and also help the leveling and decoration of the coating, and remove impurities, variegation and oxide layer on the surface At the same time, the surface of the medium is roughened, the residual stress on the substrate surface and the effect of increasing the hardness of the substrate surface. The etching process is a chemical surface treatment method, which sometimes will affect the appearance of the finished product.
3)Quality:Usually chromium is critical for mirror roll products. Our surface requirements for mirror roller is usually determined by the thickness and hardness of the chromium layer.While these are determined by many years of experience in the surface processing of rollers. According to the analysis, if the quality of the surface chromium layer is not hard enough, its surface will have a substantial impact on the production of sheet products such as PC, PP, PMMA, PET, etc., and this is an important factor that causes the durability of the roller.
● Roller diameter: max. 9000 mm
● Roller cylindricity, concentricity both ≤0.005mm
● Roller surface hard chromium plated, coating thickness is 50 ~ 80 um
● Roller surface temperature deviation ±0.5~1℃
● Roller surface treatment: mirror polished, super finishing mirror, matt, mist and anti adhesive surface
● Speed: max. 800 m/min
● Overall deformation: < 0.05 mm at full load
● Best dynamic balance: Q = 3.2