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Isothermal die forging forming process for passenger observation window frame precision die forging

A forming process and isothermal die forging technology, which is applied in the field of aluminum alloys and can solve the problems of lack of production capacity of aviation aluminum alloy precision die forging products, etc.

Active Publication Date: 2021-06-04
SOUTHWEST ALUMINUM GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the country basically does not have the research and development and production capacity of aviation aluminum alloy precision die forging products, and the manufacturing technology of isothermal precision die forgings for window frames is a big gap

Method used

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  • Isothermal die forging forming process for passenger observation window frame precision die forging
  • Isothermal die forging forming process for passenger observation window frame precision die forging
  • Isothermal die forging forming process for passenger observation window frame precision die forging

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Experimental program
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Effect test

Embodiment 1

[0055] The preparation process is the same as Comparative Example 1, and the following improvements have been made: (1) Optimizing the use of 12mm rolled slabs, optimizing the size of the billets, increasing 4mm in the length direction and width direction, 2mm in the thickness direction, and the fillet size becomes 110mm, the maximum outer window frame size of the blank is determined to be 418+2×318+2×12+1(R110)mm.

[0056] (2) The final pressure is 1 fire, and the pressure is controlled according to 5000 tons, so that the underpressure of the window frame is 1.5 ~ 3mm;

[0057] (3) Roughly process the inner and outer burrs after the final pressure 1 fire, and the residual burrs are 8-10mm; the burrs on the top of the ribs are polished flat and not polished into rounded corners;

[0058] (4) The final pressure is 2 fires, and the pressure is controlled according to 8500 tons, so that the underpressure of the window frame is 0 ~ 1mm, and the final pressure parts with qualified ...

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Abstract

The invention provides an isothermal die forging forming process for a passenger observation window frame precision die forging. The isothermal die forging forming process comprises the following steps that a passenger observation window frame cast ingot is rolled; and the rolled blank is subjected to die forging forming, and the forming process in the die forging forming comprises primary final pressing fire and secondary final pressing fire which are sequentially carried out. According to the isothermal die forging forming process for the passenger observation window frame precision die forging, through step-by-step die forging forming, key control parameters in the process are optimized, the defects of a window frame obtained through the die forging forming process are reduced, and isothermal precision die forging forming of the window frame is achieved.

Description

technical field [0001] The invention relates to the technical field of aluminum alloys, in particular to an isothermal die forging forming process for precision die forgings of passenger observation window frames. Background technique [0002] Passenger observation window frame die forgings are arc-shaped, ultra-thin wall and high-strength die forgings, and are non-machining precision die forgings with no machining allowance. Die forgings are ultra-thin-walled, high-reinforced, and the typical cross-section is T-shaped. Isothermal die forging has the characteristics of difficult forming, high surface quality requirements, and extremely high dimensional accuracy. Therefore, precision die forging is difficult. At present, the country basically does not have the research and development and production capacity of aviation aluminum alloy precision die forging products, and the manufacturing technology of isothermal precision die forging parts for window frames is a big gap. C...

Claims

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Application Information

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IPC IPC(8): B21J5/00B21J5/02C22C21/10
CPCB21J5/002B21J5/02C22C21/10
Inventor 陈丽芳代芳芳曾庆华林海涛王正安胡亚强
Owner SOUTHWEST ALUMINUM GRP
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