Cold saw blade:What it is and advantages

A cold saw, also known as a metal cutting cold saw, is a term used to describe the cutting process of a metal circular saw machine. During the metal cutting process, the heat generated by the saw blade teeth cutting the workpiece is transferred to the sawdust, keeping the workpiece and the saw blade cool. That’s why it’s called cold sawing.

Comparison

(Compared with Manganese Steel Flying Saw)

Cold saw cutting and friction sawing are different, mainly in the way of cutting:

Manganese steel flying saw blade: The manganese steel saw blade rotates at high speed to generate friction with the workpiece. The friction between the saw blade and the workpiece during the cutting process creates high temperatures that cause the contact-welded pipe to break. This is actually a burn-off process, resulting in visible high scorch marks on the surface.

High-speed steel cold cut saw: relies on the slow rotation of the high-speed steel saw blade to mill-cut welded pipes, which can achieve smooth and burr-free cutting results with no noise.

Advantages:

The cutting speed is fast, achieving optimal cutting efficiency and high work efficiency.

The blade deviation is low, and there are no burrs on the cut surface of the steel pipe, thereby improving the accuracy of the workpiece cutting, and maximizing the service life of the blade.

Using the cold milling and cutting method, very little heat is generated during the cutting process, which avoids changes in the internal stress and material structure of the cut section. At the same time, the blade exerts minimal pressure on the steel pipe and does not cause deformation of the pipe wall and mouth.

Workpieces processed with high-speed steel cold cut saw have good end face quality:

· By adopting an optimized cutting method, the accuracy of the cut section is high, and there are no burrs inside or outside.

· The cut surface is flat and smooth without requiring subsequent processing such as chamfering (reducing the processing intensity of subsequent processes), saving both processing steps and raw materials.

· The workpiece will not change its material due to the high temperature generated by friction.

· The operator fatigue is low, thereby improving the cutting efficiency.

· There are no sparks, dust or noise during the cutting process, making it environmentally friendly and energy-saving.

The service life is long, and the blade can be repeatedly sharpened using a saw blade grinding machine. The service life of the sharpened blade is the same as that of a new blade. This improves production efficiency and reduces costs.

Application Technology:

Select the sawing parameters based on the material and specifications of the workpiece being cut:

· Determine the tooth pitch, tooth shape, front and back angle parameters of the saw teeth, the thickness of the blade, and the diameter of the blade.

· Determine the sawing speed.

· Determine the tooth feed rate.

The combination of these factors will result in a reasonable sawing efficiency and the maximum service life of the blade.