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Preparation method of high-aluminum-titanium-content powder high-temperature alloy electrode bar

A technology of superalloy and titanium content, applied in the field of superalloy bar preparation, can solve the problems of low purity and density, and achieve the effect of accurate alloy composition, high purity and high metallurgical quality

Active Publication Date: 2021-03-09
BEIJING CISRI GAONA TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method for preparing a high-aluminum-titanium content powder superalloy electrode rod, which solves the problems of high-aluminum-titanium content powder superalloy electrode rods in the prior art with low purity and density, shrinkage cavity and porosity inside , and improved the composition and mechanical properties of the microstructure

Method used

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  • Preparation method of high-aluminum-titanium-content powder high-temperature alloy electrode bar
  • Preparation method of high-aluminum-titanium-content powder high-temperature alloy electrode bar
  • Preparation method of high-aluminum-titanium-content powder high-temperature alloy electrode bar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Preparation of FGH95 alloy powder electrode rod:

[0053] The preparation of φ64mm powder electrode rods on 800kg vacuum horizontal continuous casting equipment, the process flow is as follows: raw material is preferred - alloying - high temperature refining and purification - launching temperature control - continuous casting process parameters (thermos, continuous casting Adjustment and control - easy - burn element control - continuous cast blanks and the precise control of continuous sizes.

[0054] The specific test steps are as follows:

[0055] 1, raw material is preferred:

[0056] According to the standard component element of the FGH95 high temperature alloy, it is preferred that raw materials Ni, Cr, Co, W, Mo, and Nb are placed in a crucible of greater than 99.9% (and mechanically polished and ultrasonic cleaning of the raw material surface before the loading furnace. Surface oxide and impurities); activity and trace raw materials B, C, Al, Ti, Zr, HF and CE are...

Embodiment 2

[0083] Preparation of FGH97 Alloy Powder Electrode:

[0084] The preparation of φ64mm powder electrode rods on 800kg vacuum horizontal continuous casting equipment, the process flow is as follows: raw material is preferred - alloying - high temperature refining and purification - launching temperature control - continuous casting process parameters (thermos, continuous casting Adjustment and control - easy - burn element control - continuous cast blanks and the precise control of continuous sizes.

[0085] The specific test step is basically the same as that of Example 1.

[0086] The FGH97 alloy is substantially the same as the FGH95 alloy, only slightly different on the micro-burn element, mainly considering supplementation in the continuous casting stage according to the rules of the Mg, CE element according to the rules of the CE element. Mg: 0.002 ~ 0.05%, CE: 0.005 ~ 0.05%, CE: 0.005 ~ 0.01%, the range is narrow, and it belongs to the active element, and if the control is im...

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Abstract

The invention provides a preparation method of a high-aluminum-titanium-content powder high-temperature alloy electrode bar, and relates to the technical field of high-temperature alloy bar preparation. The preparation method comprises the following step of carrying out continuous casting and throwing of a high-temperature alloy in a vacuum environment. The continuous casting and throwing are carried out at a fixed continuous casting temperature, and different throwing speeds and casting blank cooling rates are adopted in the casting starting stage, after entering the continuous casting stageand in the final stage of continuous casting. The problems that in the prior art, a high-aluminum-titanium-content powder high-temperature alloy electrode bar is low in purity and density and internally undergoes shrinkage cavities and looseness are solved, and the microstructure and the mechanical property are improved.

Description

Technical field [0001] The present invention relates to the preparation of high-temperature alloy bar, and more particularly to a method of preparing a high-aluminum titanium content powder high temperature alloy electrode rod. Background technique [0002] Powder high temperature alloys are preferred materials for high-push weight ratio, high-performance engine whirlwind and high performance 3D printing parts. At present, the preparation of powder high temperature alloys mainly includes the following three processes: vacuum induction melting aerosolization (ViGa), vacuum electrode induction smelting aerosolization (EIGA) and plasma rotary electrode method (PREP), wherein EIGA, PREP powder process is used. The raw materials are all electrode bars having a diameter of φ45 to 75 mm. During the powder, the high-temperature alloy powder electrode rod required to be used must have good metallurgical mass, otherwise the defective portion of the electrode rod is extremely prone to block...

Claims

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Application Information

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IPC IPC(8): B22D11/113B22D11/045
CPCB22D11/001B22D11/045B22D11/113
Inventor 李尚平骆合力曲敬龙刘明东韩少丽刘天宇
Owner BEIJING CISRI GAONA TECH