Forging method for 2618A aluminum alloy impeller forging
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A technology for aluminum alloy impellers and forgings, which is applied in the forging field of 2618A aluminum alloy impeller forgings, and can solve problems such as size deformation of finished products
Active Publication Date: 2016-11-09
JIANGSU ASIA PACIFIC ANSINDAR ALUMINUM
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This method can effectively reduce the residual stress of 2618A aluminum alloy forgings, and solve the problem of dimension deformation of finished products
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Embodiment 1
[0024] The applicant provides a forging method of a 2618A aluminum alloy impeller forging, the specific steps are as follows:
[0025] (1) Cutting, heating, and one-time forging: the heating temperature of the billet is controlled at 440°C, and the deformation of the forging is controlled at 36%;
[0026] (2) Edge trimming and water cooling: Water cooling is used after trimming, and the water temperature is controlled at 30°C. The water temperature in the continuous production process should not exceed 35°C. The water cooling time is at least 5 minutes, and the secondary forging is completed within 2 hours;
[0027] (3) Secondary forging: carry out secondary forging after water cooling, the temperature of the forging is normal temperature, and the deformation of the forging is controlled at 5%;
[0028] (4) Solid solution: heat preservation at 530°C for 60 minutes, then heat up to 540°C with the furnace for 10 minutes, then water cooling, the water cooling temperature is 50°C,...
Embodiment 2
[0031] The applicant provides a forging method of a 2618A aluminum alloy impeller forging, the specific steps are as follows:
[0032] (1) Cutting, heating, and one-time forging: the heating temperature of the billet is controlled at 430°C, and the deformation of the forging is controlled at 26%;
[0033] (2) Edge trimming and water cooling: Water cooling is used after edge trimming, the water temperature is controlled at 20°C, the water temperature in the continuous production process should not exceed 35°C, the water cooling time is at least 5 minutes, and the secondary forging is completed within 2 hours;
[0034] (3) Secondary forging: carry out secondary forging after water cooling, the temperature of the forging is normal temperature, and the deformation of the forging is controlled at 2%;
[0035] (4) Solid solution: heat preservation at 530°C for 60 minutes, then heat up to 540°C with the furnace for 10 minutes, then water cooling, the water cooling temperature is 40°C...
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Abstract
The invention provides a forging method for a 2618A aluminum alloy impeller forging. The forging method comprises the following steps: (1) blanking, heating and preliminary forging: controlling the blank heating temperature at 430 to 440 DEG C, and controlling the deformation of a forging below 40 percent; (2) edge cutting and water cooling: performing water cooling after edge cutting is completed at the water temperature of 20 to 30 DEG C; (3) secondary forging: performing secondary forging after the water cooling is completed until the forging temperature is at normal temperature, and controlling the deformation of the forging at 2 to 5 percent; (4) solid dissolving: preserving the heat at the temperature of 530 DEG C for 60 minutes, heating the forging in a furnace to the temperature of 540 DEG C, preserving the heat for 10 minutes, and then performing water cooling at the water cooling temperature of 40 to 50 DEG C, wherein the water temperature increase rate in a quenching process is less than or equal to 10 DEG C; and (5) aging: after the solid dissolving is completed, stewing at room temperature for at least 4 hours, but not exceeding 20 hours, preserving the heat at the temperature of 193 DEG C for 22 hours, and performing air cooling to room temperature. According to the method, the residual stress of the 2618A aluminum alloy impeller forging can be effectively reduced, so that the problem of size deformation of a finished product can be solved.
Description
technical field [0001] The invention relates to the technical field of aluminum alloy impeller forging, in particular to a forging method of a 2618A aluminum alloy impeller forging. Background technique [0002] The 2618A aluminum alloy material is an Al-Cu-Mg-Fe-Ni series alloy that can be strengthened by heat treatment. Because of its low silicon content, its thermal strength is relatively high, and it has high plasticity in a hot state. The corrosion resistance of the alloy is acceptable. Machinability is still good. For the manufacture of internal combustion engine pistons and complex forgings working at high temperatures, such as compressor impellers, blower impellers, etc. [0003] 2618A aluminum alloy impeller forgings are mainly used in turbo boosting systems and are stress-bearing structural parts. The shape of the forging after forging is as follows: figure 1 As shown, the product shape after forging machining is as follows figure 2 shown. The forging main bo...
Claims
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