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Quick isothermal forging method and device for preparing less-deformable alloy cake blank

An isothermal forging and difficult-to-deform technology, applied in the field of warm forging, can solve the problems of easy oxidation, increase process complexity and cost, and very high requirements for mold materials, and achieve the effect of reducing the cost of forging process and reducing the cost of preparation

Active Publication Date: 2012-01-04
CENT IRON & STEEL RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the isothermal forging temperature of hard-to-deform superalloys such as FGH96 and FGH98 is generally above 1050°C, which requires very high mold materials. Currently, the commonly used mold materials are relatively expensive molybdenum alloys, and this mold material is It is very easy to oxidize in the environment, so the forging process must be carried out in a vacuum or inert gas protection environment
Vacuum or inert gas protection conditions will inevitably increase the complexity and cost of the process

Method used

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  • Quick isothermal forging method and device for preparing less-deformable alloy cake blank
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  • Quick isothermal forging method and device for preparing less-deformable alloy cake blank

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Embodiment Construction

[0035] Preferred embodiment details: prepare the FGH96 alloy of φ 200mm and the FGH98 alloy cake blank

[0036] figure 1 It is the specific implementation method of the present invention. The first step is the preparation of the forging blank, which is a deformed nickel-based superalloy strengthened by the γ′ phase or its related phase. This preferred embodiment adopts FGH96 or FGH98 superalloy, the main chemical composition of FGH96 alloy is: C: 0.03wt%, Co: 13wt%, Cr: 16wt%, Mo: 4wt%, W: 4wt%, Ti: 3.7wt% , Al: 2.2wt%, Nb: 0.77wt%, B: 0.015wt%, Zr: 0.05wt%, Fe: ≤0.5wt%, Ni: I. The main chemical composition of FGH98 alloy is: C: 0.03wt%, Co: 18wt%, Cr: 13wt%, Mo: 3.8wt%, W: 2wt%, Ti: 3.5wt%, Al: 3.5wt%, Nb: 1.5 wt%, Ta: 2.7wt%, B: 0.03wt%, Zr: 0.05wt%, Fe: ≤ 0.5wt%, Ni: remainder.

[0037] Nickel-based superalloy forging ingots can be high-purity, low-segregation directional solidification ingots obtained by any operable process measures, but it is best to continuously di...

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Abstract

The invention discloses a quick isothermal forging method and device for preparing a less-deformable alloy cake blank. The device comprises a heating device, an automatic feeding device, a horizontal hydraulic forging device, a blank positioning device and a flame heating device. A mould material used by the device is a nickel-based alloy with creep strength which is higher than the flow stress of a forged high-temperature alloy under corresponding forging temperature and deformation rate. In the method, a homogenized electroslag remelting continuous directional solidification technology or other processes with maneuverability can be selected for preparing a high-alloyed less-deformable alloy directional solidification billet, as well as a fine grain billet prepared by adopting the processes, such as powder metallurgy and the like. The method and the device have the advantages of short production period, convenience for control and low cost, and are suitable for mass production of large-size high-clean and uniform tissue high-alloying less-deformable alloy cake blanks.

Description

technical field [0001] The invention belongs to the technical field of forging, and in particular provides a rapid isothermal forging method and device for preparing difficult-to-deform alloy cake blanks, which are prepared by electroslag remelting continuous directional solidification technology or any other operable technology The processed plastic blank completes the rapid isothermal forging process in the air and obtains a cake with a uniform equiaxed grain structure. The cake can be used directly or as a blank for the next step of die forging. Background technique [0002] Turbine disk is one of the most important hot-end parts of aero-engine, known as the heart of aero-engine. Since the turbine disk bears a high load in a high-temperature working environment, and it also plays a role in transmitting torque while rotating at a high speed, the working conditions are very harsh, and the requirements for material properties are extremely high. The present invention is rel...

Claims

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Application Information

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IPC IPC(8): B21J5/02B21J9/00
Inventor 冯涤付锐
Owner CENT IRON & STEEL RES INST
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