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Extrusion forming method for magnesium alloy housing type component ring ribs

An extrusion forming and magnesium alloy technology, applied in the direction of metal extrusion dies, etc., can solve the problems of the quality of the ring rib cannot meet the requirements, the adaptability is not good, the rib filling is not enough, and the energy consumption is reduced, the operation is convenient and simple, and the The effect of high production efficiency

Active Publication Date: 2013-10-09
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the quality of the formed ring bars often cannot meet the requirements, and the bars are often not filled enough
Especially for magnesium alloy materials with low plastic formability, it is easy to have defects such as cracks, ripples, accumulation, fracture, etc.
The existing spinning process is not very adaptable to magnesium alloys

Method used

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  • Extrusion forming method for magnesium alloy housing type component ring ribs
  • Extrusion forming method for magnesium alloy housing type component ring ribs
  • Extrusion forming method for magnesium alloy housing type component ring ribs

Examples

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Embodiment Construction

[0027] The present invention is specifically illustrated by specific embodiments.

[0028] Such as figure 1 , figure 2 As shown, a mold for extrusion forming of ring ribs of magnesium alloy shell parts mainly includes an upper template 2, a mandrel 4, a split punch pull rod 6, a pull rod fixing plate 1, a tension spring 9, and a split punch 7 , punch sliding guide rail 10, split punch sliding bottom plate 11, supporting plate 12, cylindrical die 13, the head of the mandrel 4 is tapered, and the tail is fixed on the upper template 2 through the punch fixing plate 5 The mandrel 4 has a central hole 41 in the axial direction, and one end of the split punch pull rod 6 is inserted into the central hole 41. The central hole 41 of the mandrel 4 is a stepped hole with a larger diameter in the upper section and a smaller diameter in the lower section. , the upper end of split punch pull rod 6 passes through the lower part of the center hole 41 and is fixed to the tie rod fixing plat...

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Abstract

The invention discloses an extrusion forming method for magnesium alloy housing type component ring ribs. The extrusion forming method comprises the following steps of: (1), placing a processed hollow blank in a barrel-shaped hollowing block; (2), symmetrically arranging at least two split terrace dies in an inner tube of the hollow blank, moving the split terrace dies in the radial direction, respectively extruding the inner tube wall surface of the hollow blank by extrusion bulges of the split terrace dies, forming a certain vacancy between the extrusion bulges of the two split terrace dies, enabling un-extruded part of the inner wall of the hollow blank to plastically flow towards the vacancy between the extrusion bugles to form radial bulges, and automatically returning the split terrace dies; and (3), rotating the split terrace dies by a certain angle to reach positions at which the extrusion bulges of the split terrace dies correspond to the radial bulges, circulating the extrusion operation in the step (2), retracting the extruded split terrace dies, extruding the ring ribs at the periphery, repeating the operations when the split terrace dies reach the position of the next ring rib, and finally forming the qualified housing component with the ring ribs.

Description

technical field [0001] The invention relates to the technical field of metal material plastic processing and forming, in particular to an extrusion forming method for ring ribs of magnesium alloy shell parts. Background technique [0002] The density of magnesium alloy is only 1.7g / cm 3 (The specific gravity is about a quarter of that of steel), and it is currently the lightest metal structural material. In addition, from the perspective of engineering applications, magnesium alloys have high specific strength and specific stiffness, and excellent damping and shock absorption properties. and electromagnetic shielding properties, making it a future-oriented and environmentally friendly practical structural material. [0003] However, the crystal structure of magnesium alloys is a hexagonal close-packed structure, with few slip surfaces, and it is difficult to plastically deform at room temperature, which has become the main reason hindering the development and application of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21C23/00B21C25/02
Inventor 张治民于建民李旭斌孟模王强张福祥
Owner ZHONGBEI UNIV
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