Forging production is an important link in the machinery manufacturing industry, and the mold is the core component of forging production. The die will wear during use, leading to a decline in forging quality and lower production efficiency. Therefore, it is of great significance to study the causes of die wear and repair technology for improving forging quality and production efficiency. This paper will introduce and analyze the technology of die wear and repair in forging production.
The causes of mold wear mainly include physical wear, chemical wear and mechanical wear.
Physical wear: During the use of the mold, the surface will wear due to contact and friction with metal materials. In addition, the high temperature and high pressure working environment will also lead to mold surface oxidation and corrosion, which will aggravate physical wear.
Chemical wear: In the forging process, the die surface will react with metal materials and lubricants to form metal oxides and other compounds. These compounds can further wear down the surface of the mold, resulting in changes in mold size and shape.
Mechanical wear: The mold will be affected by mechanical forces such as shock and vibration during use, resulting in surface wear and fatigue cracks.
According to different mold wear conditions, different repair techniques can be used. Several common repair techniques are described below:
Heat treatment: By heat treatment of the mold surface, the hardness and wear resistance of the surface can be improved, and the service life of the mold can be extended. Common heat treatment methods include carburizing, nitriding, quenching, etc.
Cladding: Laser cladding, plasma cladding and other technologies are used to form a layer of wear-resistant and corrosion-resistant alloy layer on the surface of the mold, thereby improving the service life of the mold.
Brush plating: Using brush plating technology, a layer of metal coating is formed on the surface of the mold to improve the wear resistance and corrosion resistance of the surface.
Laser welding: The use of laser welding technology to repair and strengthen the wear parts of the mold surface, so as to improve the service life of the mold.
Composite materials: The use of wear-resistant, corrosion-resistant composite materials to coat or inlay the surface of the mold to improve the service life and performance of the mold.
Different repair techniques will produce different effects in practical application, so it is necessary to evaluate the effect of various repair techniques. The main indicators of the assessment include:
Mold life after repair: the longer the service life of the repaired mold, the better the effect of the repair technology.
Mold performance after repair: The repaired mold should have good wear resistance, corrosion resistance and impact resistance.
Repair cost: The cost of repair technology is also one of the evaluation indicators, and the lower repair cost is conducive to the economic benefits of enterprises.
By evaluating the effect of various repair technologies, the best repair technology suitable for the actual situation of enterprises can be selected.
When choosing the right repair technique, the following aspects need to be considered:
Mold material and working environment: Different mold materials and working environment need to use different repair techniques.
Mold wear conditions: Different wear conditions require different repair techniques, such as heat treatment or brush plating for minor wear, and technology such as cladding or laser welding may be required for severe wear.
The actual situation of the enterprise: enterprises need to consider their own equipment conditions, technical level and economic costs and other factors, choose their own repair technology.
The technology of die wear and repair in forging production is an important means to improve forging quality and production efficiency. Through the introduction and analysis of the causes of mold wear and repair technology, it can provide reference for enterprises to choose the appropriate repair technology. In the future, with the continuous development of science and technology, it is believed that there will be more advanced repair technology, which will inject new impetus into the development of the forging production industry.
