Performance heat treatment method of sa508-3 large forgings for nuclear capacitors
A heat treatment method and technology for large forgings, applied in the field of heat treatment, can solve problems such as toughness lower than specification requirements, poor composition, serious problems, etc., and achieve the effect of meeting technical specification requirements, high toughness index, and improved strength and toughness index
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[0030] The performance heat treatment method of SA508-3 large-scale forgings for nuclear capacitors of the present invention is used to improve the performance of forgings for nuclear capacitors whose material is SA508-3, the outer diameter is 3.5-6.5m, the height is not more than 5m, and the wall thickness is 100-250mm. Heat treatment, including the following steps:
[0031] The first step, the first quenching;
[0032] Put the forging into the furnace and heat it to 600-700°C and keep it for 4-5 hours; then heat it to 880-920°C at a heating rate of ≤100°C / hour and keep it for 4-5 hours; then take it out of the furnace and cool it to room temperature;
[0033] The second step, the second quenching;
[0034] Put the forging into the furnace and heat it to 600-700°C and keep it for 4-5 hours; then heat it to 880-920°C at a heating rate of ≤100°C / hour and keep it for 4-5 hours; then take it out of the furnace and cool it to room temperature;
[0035] The third step, the third ...
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