The strengthening process of mechanical forgings in ship harbors plays an important role in improving the quality and performance of forgings. Through reasonable strengthening process, the strength, hardness and service life of forgings can be significantly improved, the failure rate can be reduced, and the safe and stable operation of ship port machinery can be guaranteed. This paper will introduce the strengthening process of ship port mechanical forgings in detail.
Production and inspection of mechanical forgings in ship ports
The production process of ship port machinery forging includes heating, forging, cooling and other links. In the production process, the following points need to be noted:
Reasonable control of heating temperature and time to avoid overburning, oxidation and other phenomena.
In the forging process, the appropriate deformation amount and forging ratio should be used to ensure that the internal structure of the metal material is optimized.
Correct control of the cooling rate to obtain the ideal metallographic structure.
At the same time, for the produced forgings, strict inspection should be carried out to ensure that they meet the design and use requirements. Inspection items should include dimensions, appearance, hardness and so on.
Strengthening technology of mechanical forgings in ship ports
The strengthening process of ship port mechanical forgings mainly includes heat treatment, quenching, tempering and other links. These links play a vital role in improving the performance of forgings.
Heat treatment is to adjust the internal structure of metal materials by controlling the heating and cooling speed to achieve the purpose of improving strength and hardness. In the heat treatment process, it is necessary to pay attention to the control of temperature and time, as well as the choice of protective atmosphere.
Quenching is the heating of forgings to high temperatures and rapid cooling to increase their hardness, wear resistance and fatigue resistance. During the quenching process, overheating, cracking and other phenomena should be avoided.
Tempering is to heat the quenched forging to the appropriate temperature and hold it for a period of time to eliminate internal stress, reduce hardness and improve toughness. The choice of tempering temperature and time has a great influence on the performance of forging, and should be controlled.
Surface treatment of mechanical forgings in ship harbors
The surface treatment of ship port mechanical forgings can improve its corrosion resistance, wear resistance and aesthetics. Surface treatment methods include shot peening, polishing, coating, etc.
Shot peening is a method of strengthening the metal surface by using high-speed air flow to impact it to produce plastic deformation. Shot peening can improve the fatigue strength and stress corrosion resistance of forgings.
Polishing is the use of abrasives to finely grind the surface of the forging to obtain a smooth surface. Grinding can effectively reduce surface roughness, improve forging accuracy and reduce wear.
Coating is a layer of metal or non-metal coating with special properties formed on the surface of the forging by electroplating, electroless plating or hot dip plating. The coating can protect the forging surface from corrosion, improve the wear resistance and reduce the friction coefficient.
In the surface treatment process, the following points should be noted:
Select the appropriate treatment process and parameters to achieve the desired surface quality.
Keep handling equipment and tools clean to avoid contamination and scratching of surfaces.
Control the surface roughness and fit accuracy after treatment to meet the design requirements.
conclusion
The strengthening process of mechanical forgings in ship ports is of great significance for improving the quality and performance of forgings. Through reasonable heat treatment, quenching, tempering and other links, can significantly improve the strength, hardness and service life of forgings. At the same time, the appropriate surface treatment method can further improve the corrosion resistance, wear resistance and beauty of the forgings. In the production process, strict control of production quality and inspection standards is the key to ensure the forging strengthening process to achieve the expected effect.
