Preparation of CNC flame cutting machine before cutting

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CNC flame cutting machines are to cut the surface of the metal and should carefully remove rust, grime, or oil. The pieces to be cut should be flattened to facilitate heat dissipation and slag removal. It must not be cut on the concrete floor because the concrete floor will crack when exposed to high temperatures. The specific requirements before cutting are as follows.
1 Check whether the work site meets safety requirements, and whether torches, oxygen cylinders, acetylene cylinders (or acetylene generators and tempering preventers), rubber tubes, and pressure gauges are normal. Connect the gas cutting equipment according to the operating procedures.
2Before cutting, the workpiece is first leveled and a certain gap is left under the workpiece to facilitate the blowing of the iron oxide slag. During cutting, in order to prevent the operator from being burned by the spattered iron oxide slag, a baffle may be added to shield it if necessary.
3 Adjust the oxygen to the desired pressure. For ejector torches, the torch should be checked for ejectability. The inspection method is to first remove the acetylene inlet hose and bend it, then open the acetylene valve and preheat the oxygen valve. At this time, put your finger on the torch's acetylene gas pipe connector, if the finger feels a force and can be adsorbed on the acetylene inlet pipe joint, indicating that the torch has the ability to shoot, you can use; otherwise, the torch is not normal Can not be used, check and repair.
4 Check the air line by igniting the flame and adjusting the preheating flame properly. Then open the cutting oxygen valve and observe the shape of the cutting oxygen flow (ie, the air line). The air line should be a straight, clear cylinder with proper length. Only in this way can the workpiece cut surface be smooth and clean, with the same width and narrowness. If the wind is irregular, close all valves and trim the inner surface of the torch with a pin or other tool to make it smooth.
The power of the preheating flame should be adjusted according to the thickness of the plate. The flame properties should be neutral flame.
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