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Method for forming fan-shape polygon frame forge piece

A multi-frame, fan-shaped technology, applied to engine components, mechanical equipment, etc., can solve problems such as inapplicability

Inactive Publication Date: 2003-06-11
沈阳黎明航空发动机集团公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it only involves the rough refinement of ring gears, and is not suitable for structural parts with multiple corners and frames, or even sectors

Method used

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  • Method for forming fan-shape polygon frame forge piece
  • Method for forming fan-shape polygon frame forge piece
  • Method for forming fan-shape polygon frame forge piece

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] An installation side of GEPS company is figure 1 , figure 2 As shown, its external dimensions A and B are about 532mm and 223mm, and its material is NIMONIC263 heat-resistant alloy determined by the American special standard AMS5886A. Rough, punching, upsetting height control 42mm ~ 45mm, punching control heating temperature 1130 ℃ ± 10 ℃, punch preheating 200 ℃ ~ 300 ℃. see reaming image 3 , At this time, the billet heating temperature is 1130°C±10°C, the mold is preheated at 150°C-300°C, pay attention to controlling the inner diameter to about Φ300mm, and the wall thickness and height of the reaming ring are 41mm±1.5mm and 45mm±2mm. Marking marks on the end face of the reaming ring refer to Figure 4 , for the corner position of this embodiment, take the mark according to the angle ratio and connect it with the center of the reaming ring respectively to form α 1 、α 2 , β 1 , β 2 Four corners, take β 1 = β 2 , α 2 >α 1 . To lengthen marked reaming rings o...

Embodiment 2

[0017] The crank arm of a switch factory is Figure 8 As shown, the material is 40CrNiMo, and the three sides of the outer dimension are about 265mm. The processing procedure is as follows: select the bar material, cut the material according to the required blank weight, upsetting, punching, and the height is controlled at 40mm. Heat at 200°C to 300°C, and heat the blank at 1130°C±20°C. At this time, the wall thickness and height of the reaming ring are 35mm±1.5mm and 40mm±2mm. The corner position of this embodiment is almost an equilateral triangle, and the corner position can be Mark by three equal angles, or mark by three equal sides, that is, by the proportion of the line segment, and stretch the marked reaming ring on one side. At this time, the heating temperature is the same as above, and the preheating is the same as above. Pay attention to ensure that the mark is within a certain range. The blanks inside cannot be reduced to ensure that the subsequent process needs to...

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Abstract

The forging process includes the following steps: forging hole-enlarged ring which is a ring basically, marking on end face of the hole-enlarged ring according to the position ratio of sectorial polygonal frame corners, single-side lengthening according to the size of every side of sectorial polygonal frame and ensuring that marked place possesses a certain wall thick range and its height can not be allowed to becomse small exceeding its requirement and symmetricall hot angle pressing at marked place according to the corner form. Said process is stable and reliable, low in cost, short in production period, and specially is applicable to fine working process of polygonal frame structural member blanks of high-temp. alloy and structural steel, etc with multiple corners.

Description

Technical field: [0001] The invention relates to an integral forging process, in particular to the improvement of a forming method for a fan-shaped polygonal frame structure. Background technique: [0002] The installation side of the gas tube of the gas tube of General Electric Company (GEPS) is a typical fan-shaped quadrangular frame structure. This part has many corners, and the four sides are framed. It is a relatively complicated structural part. A large number of parts are cut and then machined. This process not only wastes raw materials, but also produces parts with discontinuous distribution of metal fiber streamlines and poor organizational properties. Later, although there were separate hot-bending forming blanks, which was improved compared with the former, butt welding, flaw detection and heat treatment were required to be added, and there were problems such as long production cycle, large consumption of raw materials, and low production efficiency. Moreover, th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21K1/76
Inventor 崔树森蒙晓荣韩立夫吴会平汪大成陈仲强姜照群李向东谢军
Owner 沈阳黎明航空发动机集团公司
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