Semisolid die forging forming process for T-shaped part
A technology of semi-solid die forging and forming technology, which is applied in the direction of manufacturing tools, metal processing equipment, forging/pressing/hammer devices, etc., and can solve problems such as performance gap, small plastic deformation, and non-structural state
Inactive Publication Date: 2017-07-21
ZHONGBEI UNIV
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Problems solved by technology
[0002] Although liquid die forging combines the advantages of traditional casting and forging, it is still mainly formed by solidification. Therefore, there is still a certain gap in performance compared with forgings produced by solid die forging. The main reason is the amount of plastic deformation. Small, the structure state is not a deformed fine-grained structure
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[0038] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0039]The technical principle of the integrated die forging of the present invention is: in a mold cavity, the semi-solid metal is firstly filled and solidified under a relatively low pressure to obtain a blank that is similar in shape to the formed part; after continuing to increase the pressure, it is formed The metal forces some of the movable modules to move, freeing up some mold space, while allowing the pre-segment to undergo a true plastic deformation under pressure, resulting in a formed part. This technology is of great significance for improving and precisely controlling the microstructure and properties of semi-solid die forging parts, and lays a theoretical fou...
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Abstract
The invention relates to a semisolid die forging forming process for a T-shaped part. The process is completed through machining by a T-shaped part die forging system. An aluminum-based composite semisolid blank is prepared by adopting a mechanical stirring method and is heated at the temperature of the secondary remelting for 50 minutes, then the semisolid alloy into a T-shaped part mold cavity containing the semi solid blank and fills cylinders with perpendicular axes of the T-shaped part, liquid filling is carried out under the first pressure, the pressure of a punch is smaller than or equal to the force of pressing a left sliding block and a right sliding block by a hydraulic piston, after the aluminum-based composite semisolid blank is solidified, the punch is continuously loaded under the second pressure, so that the solidified metal part pushes the left sliding block and the right sliding block to move outwards, after the left sliding block and the right sliding block reach the set positions, the punch is stopped from being loaded, and the formation of the two cylinders with the horizontal axes and unequal diameters is completed through plastic deformation, wherein the first pressure is smaller than the second pressure.
Description
technical field [0001] The invention relates to a semi-solid die forging forming process for a T-shaped piece. Background technique [0002] Although liquid die forging combines the advantages of traditional casting and forging, it is still mainly formed by solidification. Therefore, there is still a certain gap in performance compared with forgings produced by solid die forging. The main reason is the amount of plastic deformation. Small, the organizational state is not a deformed fine-grained structure. In order to improve the performance of the two forming technology parts, in recent years, some scholars have proposed to use casting to make the blank first, and then carry out ordinary hot die forging. This method is only suitable for simple shape parts, and the main purpose is to save materials. [0003] In view of the above-mentioned defects, the designer actively researches and innovates, in order to create a semi-solid die forging forming process for T-shaped parts, s...
Claims
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Patent Timeline
Login to View More IPC IPC(8): B21J5/02B21J13/02B22D18/02
CPCB21J5/004B21J5/02B21J13/02B22D18/02
Inventor 徐宏张新毛红奎石阳张国伟任霁萍
Owner ZHONGBEI UNIV