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A precision forging method for a nozzle shell

A technology of precision forging and nozzle housing, which is used in manufacturing tools, forging/pressing/hammer devices, forging/pressing/hammering machines, etc. Die forging process has problems such as large machining allowance, so as to achieve the effect of wide applicability

Active Publication Date: 2020-12-25
AECC AVIATION POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • A precision forging method for a nozzle shell
  • A precision forging method for a nozzle shell
  • A precision forging method for a nozzle shell

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Embodiment Construction

[0036] The present invention will be further described in detail below with reference to the accompanying drawings and specific steps. figure 1 , The present invention discloses a method for precision forging of nozzle shell; providing forging heating furnace, forging press, original bar material of superalloy, billet mold, forging pre-forming mold (referred to as pre-forging mold), forging final forming mold ( Referred to as final forging die), 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 rod part 2 of all process parts in the process of processing is the process rod part 4 . This method is suitable for common superalloys such as nickel-based superalloys or iron-based superalloys.

[0038] combine figure 1 , th...

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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, in particular to a method for precision forging of a nozzle casing. 【Background technique】 [0002] The nozzle housing is the main part connecting the fuel manifold and the combustion chamber, which provides stable and reliable fuel for the combustion chamber. Generally, nozzle housings are required to have sufficient strength and rigidity, and have the ability to resist vibration and withstand the alternating load of airflow impact in the combustion chamber. [0003] The nozzle shell structure is divided into three parts, namely the head, the rod and the mounting seat. At present, the die forging method is mostly used for processing, and the free forging process is usually used to make the billet. 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 the tire mold for f...

Claims

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Application Information

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Patent Type & Authority Patents(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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