Cold cutting saws are used to cut copper, aluminum and other non-ferrous materials. Hot cutting saws are traditional computer flying saws, also known as ordinary saws, which are very familiar to everyone. Because of friction cutting, hot cutting saws have a high speed of saw blades.
Cold cutting saw: the cutting end face is flat and smooth as a mirror.
Hot cutting saw: commonly known as hacksaw, computer flying saw, also known as friction saw. High speed cutting is accompanied by high temperature and spark, and the cutting end face is purple with many flash burrs.
Cold cutting saw: high-speed steel saw blade rotates slowly and welded pipe is milled off, so there is no burr and noise. The sawing process generates less heat, and the saw blade exerts less pressure on the steel pipe, which will not cause deformation of the pipe wall and nozzle.
Hot cutting saw: The traditional computer flying saw is a tungsten steel saw blade that rotates at a high speed. The heat generated by contacting the welded pipe causes the welded pipe to break, which is actually burnt out. High burning marks can be seen on the surface, which generates large heat. The saw blade generates large pressure on the steel pipe, causing deformation of the pipe wall and nozzle, and quality defects.
Cold cutting saw: the internal and external burrs are small, the milling surface is flat and smooth, and no subsequent treatment is required, saving processes and raw materials.
Hot cutting saw: the internal and external burrs are large, and subsequent treatment such as flat head chamfering is required, which increases the cost of manpower and raw materials.
