In the production practice of a mining parts factory in Xiangtan, Hunan, alloy steel forgings serve as key load-bearing components, and their performance directly affects the stability and durability of equipment operation. Previously, the plant was long limited by issues such as early wear of forgings, frequent breakage, and large machining allowances, which led to high equipment maintenance costs and affected overall production efficiency.

Customer pain points

The ordinary forgings previously used by this mine parts factory exposed multiple shortcomings under harsh conditions of heavy load, high impact, and dusty conditions:

• Surface hardness is relatively low, abrasive wear is severe, and the average replacement cycle is less than three months;
• Internal tissue is loose, impact toughness is poor, sudden cracking is common, posing safety risks;
• Large dimensional deviations in forgings lead to excessive machining allowance, which not only extends processing time but also increases material waste;
• Lack of material customization capability for specific working conditions cannot meet the balance requirements for wear resistance and toughness in special parts.

Product advantages

To address these pain points, Jianing Forging has developed a high-performance alloy steel forging solution for a mining parts factory, achieving reliable improvements through material selection, process optimization, and fine control:

• Material upgrade: Selected 42CrMo relatively high-strength alloy steel, quenched and tempered to achieve HB 280-320 hardness, while maintaining good impact toughness;
• Forging process: Uses multi-directional die forging and controlled forging and cooling technology to eliminate internal defects such as shrinkage loosening and porosity, optimizing the distribution of metal flow along the direction of force;
• Precision control: By combining fine molds with CNC blanking, the single-side allowance of the forging is controlled within 0.5mm, reducing subsequent processing volume;
• Customization Capability: Adjust alloy ratios and heat treatment parameters based on customers' actual working conditions (such as impact frequency, ore hardness, and ambient humidity) to provide personalized solutions.

In this case, the service life of alloy steel forgings delivered by Jianing Forging was increased to more than 2.5 times the original, equipment downtime was reduced by about 60%, and overall operation and maintenance costs were effectively controlled. Jianing Forging will continue to support mining industry customers in improving equipment reliability and economic efficiency with solid technology and rigorous service.