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Angle swage block and forging technology using same

A technology of angle and process, applied in forging equipment and its application fields, can solve problems such as poor control of metal flow direction, difficulty in anvil processing, and no consideration of enhancing the compaction effect of large forgings, so as to eliminate existing defects and prevent new defects The effect of generation and deformation reduction

Active Publication Date: 2011-09-14
TSINGHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the anvil processing of this method is relatively difficult. When this forging method is applied, the metal flow direction is not easy to control, and the compaction effect of large forgings is not considered.

Method used

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  • Angle swage block and forging technology using same
  • Angle swage block and forging technology using same
  • Angle swage block and forging technology using same

Examples

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Embodiment Construction

[0023] The present invention provides an angled anvil and a forging process using the angled anvil. The present invention will be further described below through the description of the drawings and specific implementation methods.

[0024] figure 1 Schematic diagram of the cross-section of an angled anvil. The angled anvil is a columnar body with the same cross section at each position. Its working surface consists of 4 surfaces, which are the upper surface, the left side, the right side and the lower surface: the upper surface is a plane; the left side and the right side are inclined planes, and the vertical direction The included angle is the same, set to β, and 0°≤β≤12°, this lateral angle makes the metal at the contact position between the forging and the angled anvil easy to flow, and slows down the deformation gradient distribution generated by the anvil angle, thereby avoiding cracks; the lower surface is a curved surface, the curved surface is left-right symmetrical,...

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Abstract

The invention relates to an angle swage block and a forging technology using the same, belonging to forging equipment and application technology field thereof. The left side and the right side of the angle swage block are inclined planes which have the same included angle with the vertical direction, wherein the included angel is set to be beta which is not less than 0 DEG but not more than 12 DEG. The bottom surface of the angle swage block is a curved surface which is eudipleural. The included angle formed by the left plane of the bottom surface and the horizontal plane is alpha which is not less than -10 DEG but not more than 10 DEG. When large shaft forgings, such as rotor forgings, are forged by using the angle swage block, a first upsetting technology can be omitted, and a drawing-out technology can be carried out by firstly using a concave angle swage block and then using a convex angle swage block. By using the forging technology of the combination of the angle swage blocks, the invention has the advantages that the process flow is shortened, the structure properties of forgings are improved, forging with small ratio of forging reduction is obtained, and the developments and the changes of internal defects in the forging process can be effectively controlled to eliminate the existing defects so as to prevent the generation of new defects.

Description

technical field [0001] The invention belongs to the technical field of forging equipment and its application, in particular to an angled anvil and a forging process using the angled anvil. Background technique [0002] With the continuous improvement of safety and performance, the size and weight of large forgings are constantly increasing. For example, AP1000, the third-generation nuclear power technology of the United States that my country has determined to introduce, among which the cross-sectional diameter of the low-voltage rotor forgings for million-kilowatt-level nuclear power conventional islands exceeds 2 meters, requires the use of steel ingots weighing more than 500 tons; the diameter of large cakes has reached 5200mm, and the height-to-diameter ratio less than 0.1. During the solidification process of steel ingots, defects such as shrinkage cavities and dense porosity inevitably exist in the central area. As the tonnage and cross-sectional area of ​​the ingot i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21J13/06B21J5/00B21J5/08
Inventor 刘鑫马庆贤钟约先
Owner TSINGHUA UNIV
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