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Manufacturing process of a high-strength aluminum alloy ring forging

A manufacturing process and aluminum alloy technology, which is applied in the manufacturing process of high-strength aluminum alloy ring forgings, can solve the problems of low overall performance and inability to fully exert the optimal performance of aluminum alloy, achieve reasonable distribution of deformation, and improve overall mechanical properties Low, reducing the effect of tangential deformation

Active Publication Date: 2018-07-13
WUXI PAIKE HEAVY CASTING & FORGING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing heat treatment standards were all earlier. Due to the precision of the equipment at that time, the heat treatment system for aluminum alloys was relatively conservative, so the optimal performance of aluminum alloys could not be fully utilized, resulting in low overall performance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Step 1: Purchase the billet, which is an aluminum alloy ingot with a height-to-diameter ratio of 2.4;

[0048] The second step: cutting off the blank;

[0049] The third step: forging heating: it is required to enter the furnace at room temperature, heat to 475 ° C, and keep it for 20 hours;

[0050] 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 ;

[0051] Step 5: Machining the inner hole: After the billet punched in the fourth step is air-cooled to room temperature, the skinning defects caused by the inner hole during the punching process are processed;

[0052] Step 6: Heating: Reheat the blank processed in step 5 to 475°C and keep it warm for 10 hours;

[0053] The seventh step: horse frame hole expansion: the heated billet is forged by free forging horse frame hole exp...

Embodiment 2

[0062] The first step: purchase the billet, which is an aluminum alloy ingot with a height-to-diameter ratio of 2;

[0063] The second step: cutting off the blank;

[0064] The third step: forging heating: it is required to enter the furnace at room temperature, heat to 465 ° C, and keep it for 15 hours;

[0065] Step 4: Billet making: Preheat the equipment tooling to 300°C before billet making, and apply lubricant to the equipment tooling, and use a number of forging technologies to upset the heated billet into round cakes, and punch the round cakes hole;

[0066] Step 5: Machining the inner hole: After the billet punched in the fourth step is air-cooled to room temperature, the skinning defects caused by the inner hole during the punching process are processed;

[0067] Step 6: Heating: reheat the blank processed in step 5 to 465°C and keep it warm for 6 hours;

[0068] The seventh step: horse frame hole expansion: the heated billet is forged by free forging horse frame h...

Embodiment 3

[0077] The first step: purchase the blank, which is an aluminum alloy ingot with a height-to-diameter ratio of 1.5;

[0078] The second step: cutting off the blank;

[0079] The third step: forging heating: it is required to enter the furnace at room temperature, heat to 470 ° C, and keep it for 18 hours;

[0080] Step 4: Billet making: Preheat the equipment tooling to 325°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 ;

[0081] Step 5: Machining the inner hole: After the billet punched in the fourth step is air-cooled to room temperature, the skinning defects caused by the inner hole during the punching process are processed;

[0082] Step 6: Heating: Reheat the blank processed in step 5 to 470°C and keep it warm for 8 hours;

[0083] The seventh step: horse frame hole expansion: the heated billet is forged by free forging horse frame ho...

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Abstract

The invention relates to a manufacturing process of a high-strength aluminum alloy ring forge. The manufacturing process comprises the following operation steps of blank purchasing, blank cut-off, heating of the forge, blank forming, machining of an inner hole, heating, broaching of a mandrel supporter, return heating, ring milling, cooling, curing, cold deformation, aging and machining to the required dimension. Through combination of the multiway improving forging technology, the mandrel supporter broaching technology, the lubricating technology, the numerical control ring-milling technology, the high-intensity thermal treatment technology and the cold deformation technology, the problems that an existing aluminum alloy ring forge is low in overall performance, nonuniform in mechanical property, obvious in anisotropism and the like.

Description

technical field [0001] The invention relates to the technical field of forging, in particular to a manufacturing process of a high-strength aluminum alloy ring forging. Background technique [0002] Due to the advantages of low density, high specific strength and specific modulus, aluminum alloy has become a very widely used material in the field of aerospace, and is used to make large-scale structural forgings. The requirements for the mechanical properties of aluminum alloys in the national standards are relatively low. The highest strength standard in the current standards is 410MPa, the yield strength is only 280MPa, and the elongation is 8%, which is difficult to meet the needs of current use. At the same time, due to the characteristics of poor plasticity of aluminum alloy, large degree of uneven deformation, and obvious anisotropy, aluminum alloy ring forgings also have major problems in the forming process and uniformity of mechanical properties. [0003] The existi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/00C22F1/04
CPCB23P15/00C22F1/04
Inventor 何方有刘智刘其源陈翠郑卓李姚君丁佐军郜均虎
Owner WUXI PAIKE HEAVY CASTING & FORGING
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