Thermal cracking of die steel refers to the cracking of die steel due to excessive temperature or uneven cooling during the processing of die steel. The presence of thermal cracks can seriously affect the service life and performance of the die steel, so it needs to be dealt with in a timely manner. The following will introduce the treatment method of hot cracks in die steel.
First of all, for the die steel that has already appeared hot cracks, the following treatment methods can be taken:
Heat treatment repair: For small thermal cracks, they can be repaired by heat treatment. This is done by heating the die steel to the right temperature and then cooling it quickly to eliminate cracks. This method is suitable for shallow, short cracks.
2.Arc welding repair: For larger thermal cracks, arc welding can be used to repair them. This is done by using an arc welder to heat the metal on both sides of the crack to a molten state and then quickly cool it to fill the crack. This method is suitable for deep, long cracks.
3.Thermal crack excision: For thermal cracks that cannot be repaired, they can be treated by excision. This is done by using a cutter to remove the cracked portion and then proceed to welding or other repair processes to restore the integrity of the die steel.
In addition to treating die steels that have already developed hot cracks, some precautions should be taken to avoid the occurrence of hot cracks:
Control the heating temperature: In the heating process of die steel, the heating temperature should be strictly controlled to avoid the occurrence of thermal cracks caused by excessive temperature. The heating temperature can be monitored by using tools such as a thermometer to ensure that the temperature is within a reasonable range.
2.Uniform cooling: In the cooling process of die steel, uniform cooling should be ensured to avoid the occurrence of thermal cracks caused by uneven cooling. Uniform cooling can be achieved by using tools such as coolant, cooling equipment, etc.
3.Choose the right die steel: When choosing the die steel, the right material should be selected according to the specific use conditions and requirements. Some die steels have high resistance to hot cracking, which can effectively prevent the generation of hot cracks.
4.Processing process optimization: In the processing process of die steel, the processing process should be optimized to avoid undesirable operations such as excessive heating or excessive cooling to reduce the generation of thermal cracks.
In short, the treatment methods of hot cracks in die steel include heat treatment repair, arc welding repair and hot crack removal. At the same time, some precautions should be taken to avoid the occurrence of thermal cracks. Through reasonable treatment and prevention, the service life of the die steel can be extended and the performance of the die steel can be improved.