Forging and heat treating technology of 7085 aluminum alloy
An aluminum alloy and process technology, applied in the field of process forming and heat treatment, can solve problems such as inability to be widely promoted and applied, poor plasticity and stress corrosion resistance, and inability to meet application requirements, so as to improve stress corrosion resistance and ensure High-strength properties, improving the effect of stress corrosion resistance
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Embodiment 1
[0041] The first step: purchase the blank, which is an aluminum alloy ingot with a height-to-diameter ratio of less than 2.5;
[0042] The second step: cutting off the blank and blanking;
[0043] The third step: forging heating: it is required to enter the furnace at room temperature, heat to 440±5°C, and keep warm for 6-10h;
[0044] Step 4: Billet making: Preheat the equipment tooling to 300-350°C before making the billet, and apply lubricant to the equipment tooling, and use a number of forging technologies to upset the heated billet into a round cake, and carry out the round cake punching;
[0045] Step 5: Machining the inner hole: After the punched blank is air-cooled to room temperature, the skinning defects caused by the inner hole during the punching process are processed;
[0046] Step 6: Heating: Reheat the processed billet to 440±5°C and keep it warm for 8-12h;
[0047] The seventh step: horse frame hole expansion: the heated blank is forged by free forging hors...
Embodiment 2
[0056] The first step: purchase the billet, which is an aluminum alloy ingot with a height-to-diameter ratio of 2.3;
[0057] The second step: cutting off the blank and blanking;
[0058] The third step: forging heating: put into the furnace at room temperature, heat to 445 ° C, and keep it for 10 hours;
[0059] Step 4: Billet making: Preheat the equipment tooling to 350°C before making the billet, and apply lubricant to the equipment tooling, and use a number of forging techniques to upset the heated billet into a round cake, and punch the round cake ;
[0060] Step 5: Machining the inner hole: After the punched blank is air-cooled to room temperature, the skinning defects caused by the inner hole during the punching process are processed;
[0061] Step 6: Heating: Reheat the processed billet to 445°C and keep it warm for 12 hours;
[0062] The seventh step: horse frame hole expansion: the heated blank is forged by free forging horse frame hole expansion method, and the rol...
Embodiment 3
[0071] The first step: purchase the blank, which is an aluminum alloy ingot with a height-to-diameter ratio of 1.5;
[0072] The second step: cutting off the blank and blanking;
[0073] The third step: forging heating: it is required to enter the furnace at room temperature, heat to 435 ° C, and keep it for 6 hours;
[0074] Step 4: Billet making: Preheat the equipment tooling to 300°C before making the billet, and apply lubricant to the equipment tooling, and use a number of forging techniques to upset the heated billet into a round cake, and punch the round cake ;
[0075] Step 5: Machining the inner hole: After the punched blank is air-cooled to room temperature, the skinning defects caused by the inner hole during the punching process are processed;
[0076] Step 6: Heating: Reheat the processed billet to 435°C and keep it warm for 8 hours;
[0077] The seventh step: horse frame hole expansion: the heated blank is forged by free forging horse frame hole expansion metho...
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