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What's the difference between a conventional cold saw and an advanced hot saw?
The excellent sawing scheme can improve the quality of the sawing workpiece, prolong the sawing service life of the saw blade and accelerate the sawing speed. This is the first step to improve product quality, improve production efficiency and reduce production cost. So what's the difference between a conventional cold saw and an advanced hot saw?
Cold cutting saw: that is, under normal temperature metal is high-speed rotating circular saw blade quickly cut off, cut the end face flat, bright and clean as a mirror.
Hot saw: commonly known as cutting saw, computer flying saw, also known as friction saw. High speed cutting with high temperature, spark, cut end face is purple, more flash burr.
Cold cutting saw: high speed steel saw blade slow rotation, milling broken welded pipe, so can achieve no burr and no noise. The sawing process generates little heat, and the saw blade has little pressure on the steel tube, which will not cause the deformation of the pipe wall.
Hot saw: ordinary computer flying saw for tungsten steel saw blade high-speed rotation, contact welding pipe generated heat to make it disconnected, it is burned. High burn marks are visible on the surface. It generates a lot of heat and the saw blade exerts a lot of pressure on the steel tube, which results in the deformation of the pipe wall and the quality defect.
Cold cutting saw: internal and external burr is very small, the milling surface is smooth and clean, no need for subsequent treatment, saving the process and raw materials
Hot saw: internal and external burr is very big, need to carry on flat head chamfer and so on follow-up treatment, increased manpower energy and raw material consumption cost