The processing of medium and thick steel plates is mainly used in construction engineering, machinery manufacturing, container manufacturing, shipbuilding, bridge construction, etc. It can also be used to manufacture various containers, furnace shells, furnace plates, bridge and automobile static steel plates, low-alloy steel plates,
AH36 shipbuilding steel plates, boiler steel plates,
pressure vessel steel plates, pattern steel plates, automobile beam steel plates, tractor parts and welding parts, etc. Stainless steel medium and thick steel plates are used in large railway bridges, which need to withstand dynamic loads, shocks, vibrations and corrosion resistance, such as Q235Q and Q345Q.
Medium and thick steel plate processing generally refers to steel plates with a thickness of more than 50 mm. At present, the steel plate cutting processing method mainly uses flame cutting, which can also be called oxygen cutting. The specific processes and steps for medium and thick steel plate processing are:
The first step: According to the
specific thickness of the thick steel plate, install the steel plate cutting nozzle with the corresponding aperture.
Step 2: Adjust the pressure of oxygen and fuel gas appropriately to make it meet the specified requirements.
Step 3: Use an igniter to ignite the preheating flame, then slowly open the preheating oxygen valve, adjust the length of the white center in the flame, make the flame neutral, and then preheat the starting point. At this point, it should be noted that the cutting nozzle should be perpendicular to the surface of the thick steel plate, and the distance between the tip of the flame white center and the surface of the steel plate should be 1.5-2.5 mm.
Step 4: When the temperature of the cutting point reaches the specified combustion temperature, open the cutting oxygen valve, and then the thick steel plate can be cut.
Step 5: After confirming that the lower surface of the thick steel plate has been cut, move the cutting nozzle to continue cutting. At this time, pay attention to the appropriate cutting speed, not too fast or too slow.
Step 6: After the steel plate is cut, first close the cutting oxygen valve, and then close the preheating oxygen valve. Be careful not to reverse the steel plate processing sequence.
