Engine turbine disc optimizing manufacturing process and device based on heat-resisting alloy

A technology of heat-resistant alloy and manufacturing process, which is applied in the direction of manufacturing tools, metal processing equipment, forging/pressing/hammer devices, etc., which can solve the problems of difficult machining, large amount of machining, high manufacturing cost, etc., and achieve the reduction of mechanical The effect of reducing the amount of processing and reducing material consumption

Inactive Publication Date: 2014-07-23
上海驳原金属材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because this material contains a large amount of Ni and Cr elements, it is very difficult to implement machining
At present, the forging of blanks is generally open die forging, or even free forging blanks. Therefore, the forgings produced are "fat and big ears", the amount of machining is huge, and the manufacturing cost is high. needs

Method used

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  • Engine turbine disc optimizing manufacturing process and device based on heat-resisting alloy
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  • Engine turbine disc optimizing manufacturing process and device based on heat-resisting alloy

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Experimental program
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Effect test

Embodiment 1

[0040] This embodiment includes the following steps:

[0041] Step 1. Adopting GH4145 superalloy, obtaining a blank with ultra-fine grains with a cross section of 133mm×133mm and a length of 375mm through screw extrusion, the specific steps are:

[0042] 1.1) The extrusion blank is made into a quadrangular body with a rectangular cross-section;

[0043] The size of the blank is: 130mm×140mm, length 375mm.

[0044] 1.2) Set the screw die with the rectangular cross-section square obtained in step 1.1) on the hydraulic press and start the hydraulic press. The rectangular cross-section square is pushed by the extrusion drive mechanism and passes through the concave die with a spiral rectangular cross-section channel inside. mechanism.

[0045] The output force of the hydraulic press is 25000-40000kN;

[0046] The described step 1.2 consists of several extrusion cycles, in one extrusion cycle of the die mechanism:

[0047] 1.2.1) The quadrangular body with rectangular cross-sec...

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Abstract

Provided is an engine turbine disc optimizing manufacturing process and device based on heat-resisting alloy in the technical field of engine part manufacturing technologies. GH4145 workblanks are preheated and then are subjected to primary extrusion, secondary extrusion is performed by independently reducing the temperatures of a male die and a female die, accordingly knots formed on the surfaces of the workblanks are eliminated, and a turbine disc forge piece is manufactured. The dies are made of cheap nickel base alloy and are of closed structures free of flash gutters, the die forging force is reduced, and precious metal is saved. Compared with the prior art by which work can performed under vacuum or inert gas shielding condition, the engine turbine disc optimizing manufacturing process and device can manufacture a high-quality turbine disc with double hubs in the air in a constant-temperature die forging mode ad has the batch production condition while improving the metal utilization rate and reducing mechanical machining allowance.

Description

technical field [0001] The invention relates to a method and device in the technical field of engine parts manufacturing, in particular to an optimized manufacturing process and device for an engine turbine disc based on a heat-resistant alloy. Background technique [0002] The engine turbine disc is one of the most important parts of a gas turbine and has the harshest working conditions. Turbine discs are generally forged into blanks with the alloy with the worst deformation performance among complex alloyed high-performance superalloys, and then machined into parts. Because this material contains a large amount of Ni and Cr elements, it is very difficult to implement machining. At present, the forging of blanks is generally open die forging, or even free forging blanks. Therefore, the forgings produced are "fat and big ears". needs. Contents of the invention [0003] Aiming at the above-mentioned deficiencies in the prior art, the present invention proposes an optimiz...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21J5/02B21J13/02B21J1/06B23P15/00
Inventor 吴振清
Owner 上海驳原金属材料有限公司
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