Perfect! ——Flying cold saw pipe end incision show
Jan 3 , 2022
The cutting of continuous materials such as pipes and bars in the metal processing industry has always been a headache for the industry. One is the accuracy of the cutting length, and the other is the brightness of the cut surface. This article first introduces the brightness of the cut surface problem.Before the advent of cold saws, the cutting methods of the welded pipe industry were generally divided into two types, saw blade cutting (i.e. friction saw) and hydraulic punching. The friction saw cuts off the pipe due to the high-speed rotation of the saw blade and the high temperature generated by the friction with the steel pipe, and the hot-melt burr is inevitably left in the cut part (see the figure below). This is the current method of cutting most welded pipes in China.
Hydraulic punching is widely used in foreign countries, and there are still a large number of markets. The principle of punching is to use two sharp carbide blades, under the action of hydraulic pressure, first cut a hole on the steel pipe, and then move in the vertical direction of the steel pipe, and "tear the steel pipe" under the action of the profiling die. ". Due to its principle, the punched end incision will be deformed to a certain extent, and the torn end incision will not be very bright.
The following picture is a punching flying saw used by a foreign factory:
Because the flying cold saw adopts the principle of cold milling, the speed of the tool and the load per gear are controllable. In actual use, input suitable parameters according to the hardness and specifications of the pipe, and the cutting effect is completely incomparable with the friction saw and the punching saw. Below, we share with you the results of cutting various pipes in our many years of cold sawing practice.
