Study on the Semi-Solid Thixotropic Forging Forming Process for the Low-Carbon Steel Claw Pole.

Area of Science:

• Materials Science
• Manufacturing Engineering
• Metallurgy

Background:

• Low-carbon steel is widely used due to its favorable mechanical properties.
• Semi-solid thixotropic forging is effective for light alloys but limited in ferrous materials.

Purpose of the Study:

• To propose and investigate a semi-solid thixotropic forging process for low-carbon steel claw poles.
• To optimize process parameters for improved microstructure and mechanical properties.

Main Methods:

• Numerical simulations to analyze effective strain during radial forging.
• Isothermal holding experiments to achieve desired semi-solid microstructures.
• Experimental thixotropic forging of low-carbon steel claw poles.

Main Results:

• An area reduction rate of 67% yielded high effective strain (edge > 5.0, center > 1.2).
• Optimized parameters (67% reduction, 1500°C, 15 min) produced fine, globular microstructures.
• Fabricated claw poles showed full filling, sharp profiles, and enhanced mechanical properties (yield strength +88.5%, tensile strength +79.8%).

Conclusions:

• The developed semi-solid thixotropic forging process is effective for low-carbon steel.
• Optimized parameters significantly enhance the microstructure and mechanical performance of steel claw poles.
• This method offers a viable route for producing high-quality ferrous components.