Twist extrusion forming die and twist extrusion forming method

A technology for forming molds and mold cavities, which is applied in the fields of twisting and extrusion forming molds and their forming, twisting and extrusion forming molds and forming, can solve the problems of high performance requirements of extrusion rods and high equipment requirements, and achieve the elimination of internal organizational defects and improve Overall performance, the effect of improving the stress-strain distribution

Inactive Publication Date: 2015-04-01
TAIYUAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The most common method of realization is by applying torque to the extruded rod (Kuznechno Shtampovochnoe Proizvod, 1991, 9: 5-6), but the disadvantage of this method is that the overall performance of the extruded rod is higher
Studies have shown that applying rotation to the mold can significantly improve the structure and properties of the extruded product (Materials & Design, 2008, 29(7): 1316-1329), but this method has the problem of high equipment requirements

Method used

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  • Twist extrusion forming die and twist extrusion forming method
  • Twist extrusion forming die and twist extrusion forming method
  • Twist extrusion forming die and twist extrusion forming method

Examples

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Embodiment

[0027] Example: Twisted extrusion mould and forming method

[0028] Figure 1~3 Shows the structure of the twist-extrusion mold, including the first half mold 1 and the second half mold 2. The first half mold 1 and the second half mold 2 are fastened by bolts to form a cylinder, and the inside of the cylinder is extrusion The mold cavity, and the parting surfaces of the first half mold 1 and the second half mold 2 are aligned and flush; the extrusion mold cavity descends from the extrusion inlet to the guide section 3, and the large round-octagonal transition section 4 , Regular octagonal torsion section 5, regular octagon-small circular torsion transition section 6, exit section 7;

[0029] The guide section 3 is an equal-diameter channel, the cross-sectional shape and size are the same as the shape and size of the extruded bar, the cross-section is a large circle, the diameter is 50 mm, and the length of the guide section is 225 mm;

[0030] The large circle-regular octagonal tra...

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Abstract

The invention discloses a twist extrusion forming die and a twist extrusion forming method. The forming die comprises a first half die and a second half die, wherein the first half die and the second half die are tightly buckled through a bolt to form a cylinder, an extrusion die cavity is formed inside the cylinder, and a die joint of the first half die is fit and level with a die joint of the second half die; the extrusion die cavity is sequentially formed by a guide section, a large circular-regular octagonal transitional section, a regular octagonal twist section, an octagonal-small circular twist transitional section and an outlet section from an extrusion inlet to the lower side. The twist extrusion forming die has the advantages of good transformation effect, high speed and high efficiency, the weaknesses of the prior art such as non-uniformity in transformation and existence of transformation dead corner can be overcome, the stress distribution inside a material can be greatly improved, and the comprehensive performance of the material also can be improved.

Description

Technical field [0001] The invention relates to a twist-extrusion forming die and a forming method, in particular to a twist-extrusion forming die and a forming method thereof, and belongs to the technical field of extrusion forming of metal materials. Background technique [0002] Studies have found that the combination of torsion and extrusion can not only reduce the load of material forming, but also improve the uniformity of material deformation and improve the physical properties of the material. In order to achieve the combination of traditional extrusion and torsion deformation, domestic and foreign scholars have also proposed a variety of methods to achieve twist extrusion. The most common way to achieve this is to apply torque to the extrusion rod (Kuznechno Shtampovochnoe Proizvod, 1991, 9: 5-6), but the disadvantage of this method is that it requires higher overall performance of the extrusion rod. Mandrel torsion extrusion method (International Journal of Mechanical ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21C25/02B21C23/08
CPCB21C23/08B21C25/02
Inventor 汪程鹏林飞池成忠曹晓卿
Owner TAIYUAN UNIV OF TECH
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