Hot forging is typically performed above the metal’s recrystallization temperature (approximately 727°C), and in practice, temperatures are often set above 800°C.
For steel, the base temperature for hot forging is typically no lower than the recrystallization temperature (approximately 727°C), and the actual heating temperature is often between 800°C and 1200°C. For example, the heating temperature for I-beam production is 1100-1200°C.
Temperature Differences Between Different Materials
The hot forging temperature range for aluminum alloy 6061 is 480-520°C.
The Significance of Temperature Control
High temperatures can enhance material plasticity, reduce deformation resistance, mitigate cracking risk, and refine grain size, thereby increasing the strength and toughness of forgings.
How is deformation controlled during hot forging?
The key to controlling deformation during hot forging lies in the comprehensive control of temperature, process parameters, equipment selection, and material properties. Specific methods are as follows:
Temperature Control
Initial and Final Forging Temperatures
The initial forging temperature must be above the metal’s recrystallization temperature (e.g., typically 800-1200°C for steel) to ensure material plasticity. The final forging temperature must be kept below 700°C for steel to prevent a sudden increase in deformation resistance and cracking.
For high-temperature alloys (such as aviation materials), the initial forging temperature can reach 1100-1150°C. When the final forging temperature drops to 1000-1050°C, the deformation rate must be reduced.
Temperature Uniformity
Heating must be uniform to avoid large temperature differences across the cross section, which can cause thermal stress and deformation.
The above is a guide to hot forging temperatures. Professional forging manufacturers will expertly handle the temperatures for various forging processes, so you don’t need to worry.
Of course, if you have a large demand for forgings, you can choose to cooperate with Mulan Metal. Mulan Metal has 12 years of experience in metal forging production and processing. It excels in custom forging processing of various flanges, shafts, gears, and swing arms. It has helped more than 30 countries complete the commissioned production of various custom forgings and has received unanimous recognition. We look forward to your cooperation consultation.
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