Copper forgings of construction machinery may suffer various damage during use, such as fatigue crack, impact damage, corrosion and so on. Here are some common material damage and repair techniques:
- Fatigue crack repair: For copper forgings with fatigue cracks, cracks can be repaired and strengthened. Repair methods include local welding, ultrasonic welding, cold spraying, etc., to fill the crack and improve its strength and durability.
- Impact damage repair: The copper forgings damaged by impact can be repaired by welding, heat treatment, hot coating and other ways. According to the damage situation and needs, the appropriate repair method is selected to restore the original form and performance of copper forging.
- Corrosion repair: Copper forgings may be subject to corrosion damage, such as oxidation, corrosion erosion, etc. Corrosion repair can use surface treatment techniques, such as electroplating, anodizing, spraying, etc., to re-establish a protective layer or repair the damaged surface.
- Heat treatment strengthening: Through the heat treatment process, such as tempering, quenching, etc., the copper forgings are heated and cooled to change its organizational structure and performance. Heat treatment can improve the strength and hardness of copper forgings, reduce the internal stress, and improve the anti-fatigue and anti-fracture ability.
- Welding repair: For different types of damage, welding repair technology can be used. For example, gas welding, arc welding, laser welding and other methods are used to connect and fill the damaged parts.
It should be noted that the material damage and repair technology requires professional technical personnel to operate, and the repair process to ensure that the repaired copper forging can meet the relevant performance and quality requirements. Therefore, in the repair of material damage, the appropriate repair method should be selected according to the specific situation, and follow the relevant standards and norms.
