Cutting Methods for Plates
- Mechanical cutting
Mechanical cutting is one of the common ways of cutting plates. This method mainly uses a cutting machine or punch press to cut the sheet through the action of mechanical force. The operation requires precise adjustment of the position of the cutter and the depth of cut to ensure accurate and smooth cutting. The advantage of mechanical cutting is that it is easy to operate, suitable for mass production and relatively low cost.
- Laser cutting
Laser cutting is a high-precision method of cutting plates. It uses a high-power laser beam to irradiate the sheet, causing it to melt or carbonize locally, and then blow the melted material away from the sheet through airflow or mechanical force, thus realizing cutting. The advantages of laser cutting are high cutting precision, high speed and suitable for cutting complex shapes.
- Thermal cutting
Thermal cutting is mainly to soften the sheet by high temperature, and then use mechanical force or blade to cut. This method is suitable for thicker plates. The advantage of thermal cutting is that it is suitable for different thicknesses of plates, but the operation needs to pay attention to the control of the temperature, to avoid overheating caused by the deformation of the plate.
When carrying out plate cutting, the following points should also be noted:
- choose suitable cutting tools and equipment, according to the thickness and hardness of the sheet.
- keep safe when operating, wear protective glasses and gloves to avoid splash injury.
- make sure the surface of the plate is clean and free of impurities before cutting to improve the cutting quality.
The welding method of PP sheet mainly includes the following steps:
- Preparation: Before welding, you need to make sure that the welding tools are functioning properly. Check whether the nozzle of the welding gun and the screws of the gun body are loose or off, and connect the power cord of the welding apparatus to ensure that the power supply is not loose.
- .Pre-welding treatment: Wipe the PP sheet clean and make sure the welding area is dry and free of dust and grease. In addition, it is also necessary to chamfer the edges of the PP sheet.
Welding Sequence:
- Use hot gas welding or a torch for welding. Hot gas welding can be done with an inert gas such as air or nitrogen; the gas must be dry and free of dust and grease.
- Clamp the two PP sheets with a fixture to ensure the correct welding position. When welding, hold the welding tool in one hand and press the welding rod into the weld area with the other hand.
- The welding torch and the object to be welded make an angle of 45 degrees and push the welding rod at a constant speed, while the welding torch moves along the connecting axis in the form of a pendulum to ensure the quality of welding.
- During the welding process, the welding pressure needs to be controlled to avoid too light or too heavy, so as not to affect the welding effect.
After welding: after welding is completed, first put the welding torch on the workbench, cut off the power supply, clean up the workplace, and finally put the welding tools and materials back to their original places.
Things to keep in mind during the welding process include:Ensure that the welding electrode is the same as the base material to obtain the best weld strength.
Adjust the temperature of the welding torch between scale 3-4 to avoid too high or too low temperatures, which may affect the quality of the weld.
Weld quality is dependent on the welder’s skill and ability to control welding pressure.
