Another way to cover the wear plate to avoid cutting cracks is to reduce the cutting speed. If the full plate preheating is not possible, a partial preheating method can be used instead. The use of low speed cutting methods to prevent cutting cracks is not as reliable as preheating. We recommend preheating the dicing tape before cutting, and the preheating temperature is about 100 °C. Its maximum cutting speed depends on the grade and thickness of the liner.
In the process of covering the wear plate, it is recommended to combine the preheating and low speed flame cutting methods to further reduce the occurrence of cutting cracks. Regardless of whether the cutting is not preheated or not, the slow cooling after the cutting of the liner can effectively reduce the risk of cutting cracks. If it is piled up after being cut, it will be covered with a heat-insulating blanket, and it can also achieve slow cooling. Slow cooling requires cooling to room temperature.
For the cutting of the wear-resistant plate, heating immediately after cutting is also an effective method and measure for preventing cracking. The cutting thickness of the liner can be effectively eliminated by the low temperature tempering treatment; for the method of heating after cutting, the heating after cutting is also adopted by the heating method of the electronic heating blanket and the heating furnace.