Precise forging method for nozzle shell

A technology of precision forging and nozzle housing, which is applied in the direction of manufacturing tools, forging/pressing/hammer devices, forging/pressing/hammering machinery, etc. Problems such as large machining allowance in die forging process, to achieve the effect of wide applicability

Active Publication Date: 2019-04-26
AECC AVIATION POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When free forging blanks are generally heated by natural gas furnaces, the heating temperature cannot be precisely controlled, and the surface quality of the blanks obtained cannot be guaranteed; secondly, the overall machining allowance of the die forging process is large, and the machining cycle is long

Method used

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  • Precise forging method for nozzle shell
  • Precise forging method for nozzle shell
  • Precise forging method for nozzle shell

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Embodiment Construction

[0036] Below in conjunction with accompanying drawing and specific steps the present invention is described in further detail, see figure 1 , the invention discloses a precision forging method for a nozzle shell; it provides a forging heating furnace, a forging press, a high-temperature alloy raw bar, a billet mold, a forging pre-forming die (abbreviated as a pre-forging die), and a forging final forming die ( Final forging die for short), trimming die; forging heating furnace is electric furnace;

[0037] see image 3 , Figure 4 and Figure 5 , the target nozzle housing includes a head 1, a rod 2 and a mounting seat 3, and the two ends of the rod 2 are respectively fixedly connected with the head 1 and the mounting seat 3; see figure 2 The shank 2 of all process parts during machining is the process shank 4 . This method is applicable to common superalloys, such as nickel-based superalloys or iron-based superalloys.

[0038] combine figure 1 , the precision forging of...

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Abstract

The invention discloses a precise forging method for a nozzle shell. The method comprises four forging stages, and molds are designed in all the processes for achieving precise forging. According to the method, in the step of local coarse heading, that is, upset forging blank making, the appearance size of a blank making part can be precisely controlled, and the maximum size precision can reach 0.1 mm; and in addition, a forging press is more stable compared with a forging hammer, the deformation amount of each working step is precisely calculated, therefore, forge piece streamlines can be evenly distributed along the appearance, the mechanical property of the blank making part is greatly improved, the deformation amount of each step such as upset forging, pre-forging and finish forging isprecise, and the overall size control precision of a forge piece is improved.

Description

【Technical field】 [0001] The invention belongs to the field of precision forging, and in particular relates to a precision forging method for a nozzle housing. 【Background technique】 [0002] The nozzle housing is the main part connecting the fuel main pipe and the combustion chamber, which provides stable and reliable fuel for the combustion chamber. Generally, the nozzle housing is required to have sufficient strength and rigidity, and has the ability to resist vibration and withstand the alternating load of airflow impact in the combustion chamber. [0003] The structure of the nozzle shell is divided into three parts, namely the head, the rod and the mounting seat. At present, die forging is mostly used for processing, and the billet is usually made by free forging. The free forging process uses the cross-sectional area of ​​the mounting seat with a larger cross-sectional area to determine the bar diameter of the raw material. Then, through free forging, the bar is fir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21J1/06B21J5/02B21J13/02B21K21/08B21K29/00
CPCB21J1/06B21J5/02B21J13/02B21K21/08B21K29/00
Inventor 王鹏王周涛王向志赵旭孟庆军马军刘宁王少锋
Owner AECC AVIATION POWER CO LTD
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