Forging process for construction machinery casting at Ningbo Jinhui Precision Casting Co., Ltd.

Ningbo Jinhui Precision Casting Co., Ltd. uses advanced precision forging technology to press the raw materials into the desired shape through high-temperature plastic deformation, while optimizing the internal grain structure. This process greatly improves the tensile strength, yield strength, toughness and other mechanical properties of casting, making it stable under high load conditions. Especially for construction machinery casting, it has significant fatigue resistance and impact resistance, meeting the needs of harsh application environments.

During the forging process, Ningbo Jinhui Precision Casting Co., Ltd. flexibly uses hot forging and cold forging processes according to product requirements:
Hot forging: forming metal under high temperature conditions, reducing material hardness and deformation resistance, suitable for the manufacture of large and complex structural parts.
Cold forging: plastic deformation at room temperature, significantly improving surface finish and dimensional accuracy, while enhancing material strength.
This combination of hot and cold forging not only ensures the optimization of casting performance, but also improves production efficiency and economy.

Ningbo Jinhui Precision Casting Co., Ltd. widely uses die forging technology, which is to plastically process metal through special dies to achieve high-precision and complex-shaped forging production. The die forging process has the following significant advantages:
High dimensional consistency: ensure that castings maintain precise dimensional tolerances in mass production.
Complex shape forming: meet the design requirements of complex parts of engineering machinery and reduce subsequent processing steps.
Enhanced internal density: improve the internal structure of the material, eliminate small defects and pores, and improve reliability.

Multi-stage forging processes such as pre-forging, final forging and trimming forging can achieve the gradual forming and optimization of castings. The process design can accurately control the flow of metal, ensure the mechanical properties and geometric accuracy of castings, and reduce the generation of internal defects.
During the forging process, Ningbo Jinhui Precision Casting Co., Ltd. uses advanced high-temperature control technology to ensure that metal materials are processed within the optimal plastic temperature range. Combined with the company's independently developed material processing technology, it can effectively improve the metal's grain structure, so that the forgings show excellent toughness and fatigue resistance. This technology is particularly critical for heavy engineering machinery parts such as excavator arms, loader shafts, etc.

Through a professional mold design and manufacturing team, Ningbo Jinhui Precision Casting Co., Ltd. can develop exclusive forging molds according to customer needs. Advanced CAD/CAE technology is used for mold design and simulation optimization to ensure that the mold and casting requirements are perfectly matched. This capability significantly improves casting accuracy and production efficiency while shortening the new product development cycle.

Burrs and surface unevenness generated during the forging process are a major problem in product molding. Ningbo Jinhui Precision Casting Co., Ltd. uses automatic deburring equipment and high-precision shaping technology to ensure the surface finish and beauty of the casting while enhancing dimensional consistency. This post-processing process is particularly suitable for engineering machinery parts with high surface quality requirements.

Ningbo Jinhui Precision Casting Co., Ltd. conducts comprehensive quality inspections on forged products to ensure that they meet the high standards of customers, including:
Metallographic analysis: Check the grain structure and density of the material to ensure uniform organization.
Mechanical property testing: including tensile, yield, impact and fatigue performance tests to verify the reliability of castings under high-strength applications.
Non-destructive testing: using ultrasonic, magnetic powder and radiographic testing technologies to eliminate potential defects inside and on the surface of forgings.
Ningbo Jinhui Precision Casting Co., Ltd. introduces environmental protection technology in the forging process, and significantly reduces energy consumption and carbon emissions through advanced energy-saving equipment and waste recycling systems. At the same time, the optimized forging process reduces material waste, improves the utilization rate of raw materials, and further improves the economy and sustainability of the manufacturing process.