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A kind of die forging forming method of gh4169 alloy disc forging

A GH4169, forming method technology, applied to vehicle parts, transportation and packaging, wheels, etc., can solve the problems that are not conducive to the improvement of forging strength, low material utilization rate, and increase the hole expansion process, so as to shorten the machining time and improve Productivity and cost reduction effects

Active Publication Date: 2019-06-11
SHAANXI HONGYUAN AVIATION FORGING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using cake blank die forging has low material utilization rate and high deformation resistance; using ring blank die forging increases the hole expansion process, increases the number of fires, and increases the production process, which is not conducive to the improvement of forging strength.

Method used

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  • A kind of die forging forming method of gh4169 alloy disc forging
  • A kind of die forging forming method of gh4169 alloy disc forging

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Embodiment Construction

[0020] The present invention is described in further detail below:

[0021] 1) First design the forging die, and after several computer simulation calculations, it is determined that the horizontal angle α at the center of the web is 10°, the draft angle β is 10°, and the draft angle γ at the parting surface is 20°~ 30°.

[0022] 2) Upsetting a bar of Φ300×392mm to Φ455×170mm and then punching the inner hole of Φ170mm, and then machining the inner hole of the ring billet from bottom to top with an inclined plane with an angle of ~2° to the axis; the center part and 20 #Low-carbon steel, low-carbon steel bar arc surface and the axis to maintain an angle of 2 °, height 170mm.

[0023] 3) After matching the 20# steel with the ring billet, preheat in the preheating furnace at 200°C to 250°C for ~20 minutes, and then spray the protective lubricant FRG35 with a thickness of ~1mm; at the same time, preheat the mold in the preheating furnace at 300°C Heat for 24h.

[0024] 4) Heat ...

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Abstract

The invention discloses a die-forging formation method of a GH4169 alloy disk forge piece. The die-forging formation method of the GH4169 alloy disk forge piece comprises the steps that when a die is designed, the outer die bevel beta is 10-15 degrees, the die bevel gamma of the portions tightly attached to the two sides of a parting surface is 20-40 degrees, and the horizontal included angle alpha between a web and the center is 7-15 degrees; after a bar is rammed to form a cake and punched, low-carbon steel with the diameter phi being (180-190)*h is inlaid in the center, a ring blank and the low-carbon steel are matched through a slope of 1-3 degrees, the cake blank is preheated at the temperature of 200-250 DEG C for 20-30 min, then a protective lubricating agent is sprayed, and the spraying thickness is 0.5-2 mm; the cake blank is heated to 980-1020 DEG C, and the heat preservation coefficient is 0.6-0.8 min / mm; meanwhile, the die is preheated at the temperature of 300+ / -100 DEG C for 6-24 h; and after the die is sufficiently preheated, the die is installed on an oil press or a counter-blow hammer, and the heated cake blank is transferred to a die cavity for die-forging formation.

Description

Technical field: [0001] The invention belongs to the field of thermal processing and forming of GH4169 alloy, and relates to a die forging forming method of a GH4169 alloy disk forging. Background technique: [0002] GH4169 alloy disc forgings are high-temperature and high-speed rotating parts, and the working conditions of the parts are harsh. It is required that the forgings have good cross-section structure uniformity and uniform deformation distribution in each part. Therefore, the problem of uniform cross-section structure is a technology that many forging factories are currently facing. problem. At present, for aero-engine turbine disk forgings, cake blanks or ring blanks are mainly used for die forging. The use of cake blank die forging has low material utilization rate and high deformation resistance; the use of ring blank die forging increases the hole expansion process, the number of fires increases, and the production process increases, which is not conducive to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21K1/32
CPCB21K1/32
Inventor 何军利王波伟
Owner SHAANXI HONGYUAN AVIATION FORGING
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