What are the applications of tungsten carbide spraying in corrugated rollers?

The process of tungsten carbide spray corrugated roller is different from the traditional corrugated roller process. Previously, the hardness of the substrate during heat treatment was different, and higher precision was required for the tooth profile before spraying. It must be completed in automatic CNC grinding. Secondly, spraying technology is the key to ensuring the hardness of tungsten carbide. The polishing technique after spraying is the binding force and quality of subsequent polishing treatment. Due to the unique characteristics of corrugated rollers compared to ordinary workpieces and tooth shapes, as well as the extremely high surface hardness of tungsten carbide (such as diamond), traditional ordinary grinding wheels cannot be used for grinding.

Grinding → (medium frequency quenching) → sandblasting → preheating → priming → spraying tungsten carbide (thickness 0.05-0.06mm) → polishing and grinding. The coating thickness of the new tungsten carbide corrugated roller is 0.05-0.1mm. After long-term use, when the coating decreases and cannot be produced, we will remove the residual tungsten carbide for you and repair it. The diameter of the corrugated roller has hardly changed.

Advantages of tungsten carbide spray corrugated roller

A、 Tungsten carbide corrugated rollers are 3-6 times more durable than ordinary corrugated rollers.

B、 The teeth of corrugated rollers generally vary greatly, and the quality of cardboard is unstable. When the corrugated roller is new, the gap between the core paper and the rubber roller should be 0.1mm to 0.2mm. But when the middle of the corrugated roller wears by 0.1mm, the gap will widen, causing too much glue and moisture, making the cardboard soft and easy to bend; Tungsten carbide corrugated rollers have small and long tooth changes, and the quality of the cardboard is flat and stable.

C、 Generally speaking, if the middle of the corrugated roller is worn out too much and dented, it cannot produce wide cardboard again, resulting in waste paper because the two ends will be flat or there will be no glue in the middle (delamination and foaming). At this point, wide cardboard should be used at both ends of the grinding roller to maintain the service life of the corrugated roller; Due to the wear resistance of tungsten carbide corrugated rollers, it is not a problem to first use narrow paper and then use wide paper.

D、 Corrugated rollers generally wear out quickly, and the originally designed tooth height (high corrugated rate) ensures a long service life; Due to the wear resistance of tungsten carbide corrugated rollers, low tooth height (small ripple rate) was designed from the beginning, resulting in a long service life.

E、 Generally, V-shaped corrugated rollers cannot be used because the corrugated top is small and wears out quickly, causing the cardboard to become softer and softer; Tungsten carbide corrugated rollers do not have this issue due to their wear resistance.

F、 Generally, corrugated rollers wear out quickly and heavily, and after repair, their diameter is much smaller; Tungsten carbide corrugated rollers have almost the same diameter after repair due to their wear resistance and minimal wear. **It is important that tungsten carbide corrugated rollers have almost the same groove height throughout their entire service life.