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A 7a09 aluminum alloy long-wall deep-rib box-shaped ball-head rocker arm isothermal forging forming mold and method

A technology of isothermal forging and forming die, applied in the direction of manufacturing tools, metal processing equipment, forging/pressing/hammer devices, etc., can solve the problems of coarse grains, disordered flow lines, unqualified shape and size of aluminum alloy forgings, etc. The effect of good internal organization performance, improved mold design and high service life

Active Publication Date: 2017-05-24
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the problems of conventional forging for long-wall deep-rib box-shaped ball-head rocker arm forgings, which are difficult to make and form, and are prone to defects such as folding, streamline disorder, and coarse grains, and are prone to elastic recovery after forming, resulting in the final The shape and size of the formed aluminum alloy forgings are unqualified, and the performance is difficult to meet the requirements of use, and then a 7A09 aluminum alloy long-walled deep-rib box-shaped ball-head rocker arm isothermal die forging forming die and method are provided.

Method used

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  • A 7a09 aluminum alloy long-wall deep-rib box-shaped ball-head rocker arm isothermal forging forming mold and method
  • A 7a09 aluminum alloy long-wall deep-rib box-shaped ball-head rocker arm isothermal forging forming mold and method
  • A 7a09 aluminum alloy long-wall deep-rib box-shaped ball-head rocker arm isothermal forging forming mold and method

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specific Embodiment approach 1

[0031] Specific implementation mode one: combine Figure 1-Figure 17 Explain, a kind of 7A09 aluminum alloy long-walled deep-rib box-shaped ball-head rocker arm isothermal die forging forming mold of the present embodiment, it comprises upper die 1, lower die 2 and a plurality of electric heating coils 3;

[0032] The lower surface of the upper mold 1 has an upper mold horizontal plane 1-1 and an upper mold inclined plane 1-2, the upper mold inclined plane 1-2 is inclined upwardly, and the upper mold horizontal plane 1-1 and the upper mold inclined plane 1-2 are provided with integrally formed The upper half cavity 1-3, the cavity on the horizontal plane 1-1 of the upper die is processed with an upper half protrusion 1-4 extending downward;

[0033] The upper surface of the lower mold 2 has a lower mold horizontal plane and a lower mold slope, the lower mold slope is in the same direction as the upper mold slope 1-2, and the lower mold horizontal plane and the lower mold slope...

specific Embodiment approach 2

[0035] Specific implementation mode two: combination image 3 and Figure 11-Figure 12 Explain that the rib 2-5 in this embodiment is a rib that gradually protrudes outward from the horizontal surface of the lower die in the direction of the inclined surface of the lower die, and the curve from the low end to the top end of the cross section of the rib 2-5 is an arc curve with a smooth transition . Such setting meets the design requirements and the actual need for forming a long-wall deep-rib box-shaped ball rocker arm. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0036] Specific implementation mode three: combination figure 1 , image 3 , Image 6 with Figure 12 Description, the two corners of the upper mold slope 1-2 in this embodiment are provided with downwardly extending upper mold positioning columns 1-6, and the two corners of the upper mold horizontal plane 1-1 are provided with upwardly recessed upper mold steps 1- 7. The two corners of the horizontal plane of the lower mold are provided with upwardly extending lower mold positioning columns 2-7, and the two corners of the inclined surface of the lower mold are provided with downwardly recessed lower mold steps 2-6, and the lower surface of the upper mold 1 There is a circle of upper mold sealing grooves 1-8 on the upper surface, and a circle of lower mold sealing grooves 2-8 is processed on the upper surface of the lower mold 2. The upper mold sealing grooves 1-8 and the lower mold sealing grooves 2-8 are formed Sealing cavity, the upper mold 1 is sealed and closed on the ...

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Abstract

The invention provides an isothermal die-forging forming die and method for a 7A09 aluminum alloy rocker arm provided with long walls, deep ribs and a box-shaped ball head, relates to a forming die and method for a rocker arm provided with long walls, deep ribs and a box-shaped ball head, aims to overcome defects of difficulty in blank manufacturing and forming, proneness of folding, disorderliness of flow lines and coarse and large grains occurring in a conventional forging and manufacturing method for a rock arm forged piece provided with long walls, deep ribs and a box-shaped ball head and solves problems of unqualified shape and size of a finally formed aluminum forge piece due to elastic recovery after forming and difficulty in meeting use requirements for performance. The forming method mainly comprises steps as follows: I, blank manufacturing; II, first-time forging forming; III, cooling; IV, first-time pickling; V, primary defect repairing; VI, second-time forging forming; VII, second-time pickling, VIII, secondary defect repairing; IX, finish forging forming, X, third-time pickling, XI, thermal treatment of the forge piece; XII, correction treatment of the forge piece. The isothermal die-forging forming die and method are used for forming of the 7A09 aluminum alloy rocker arm provided with long walls, deep ribs and the box-shaped ball head.

Description

technical field [0001] The invention relates to a long-wall deep-rib box-shaped ball-end rocker arm forming mold and a method thereof, in particular to a 7A09 aluminum alloy long-wall deep-rib box-shaped ball-end rocker arm isothermal forging forming mold and method. Background technique [0002] Aeronautical rocker arm forgings generally have long walls and deep ribs, which are prone to folding defects during forming. Due to this special structure, it is easy to cause coarse grains in forgings during the forming process. In addition, such forgings often have corners. Such forgings with corners are prone to elastic recovery after heat treatment, and the forgings are deformed due to residual stress, resulting in unqualified shape and size. One end of such forgings often has a ball head, which is difficult to form and is prone to various defects such as filling and dissatisfaction. In production, for this kind of forgings that are difficult to forge, multiple sets of molds ar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21J13/02B21J5/02
CPCB21J5/025B21J13/02
Inventor 徐福昌袁林单德彬徐彦锋
Owner HARBIN INST OF TECH
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