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Cast superalloy die material for isothermal forging at 950-1050 DEG C

A high-temperature alloy and mold material technology, which is applied in the direction of manufacturing tools, casting molding equipment, casting molds, etc., can solve the problem of high cost of mold materials and achieve the effect of reducing manufacturing costs

Inactive Publication Date: 2020-04-03
上海金甸机电设备成套有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide a mold material for isothermal forging at 950-1050°C. The mold material for isothermal forging at 950-1050°C will solve the problem of high cost of the mold material for isothermal forging in the prior art

Method used

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  • Cast superalloy die material for isothermal forging at 950-1050 DEG C
  • Cast superalloy die material for isothermal forging at 950-1050 DEG C
  • Cast superalloy die material for isothermal forging at 950-1050 DEG C

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Embodiment 1

[0014] The invention relates to a vacuum induction furnace for material smelting.

[0015] Select pure metals that have been tested: Cr, Ni, Mo, W, Co, Nb, Al, Ti, Zr, ferroboron, and electrode carbon. The chemical composition is shown in Table 1, and the chemical composition is formulated as required.

[0016] Add metals Cr, Ni, Co, Mo, W, Nb and carbon directly into the furnace as the charge, vacuumize to less than 1Pa, turn on the electricity, and refine the material for more than 30 minutes after the material is cleared, then vigorously stir the molten pool, power off to cool down the conjunctiva;

[0017] Re-energize, add Al and Ti, smelt for 5 minutes and then stir;

[0018] Then add ferroboron and Zr for 5 minutes and then stir to promote the homogenization of components, take samples before the furnace, analyze the chemical composition and adjust before the furnace. After the chemical composition meets the requirements, the power is turned off to cool down. After the ...

Embodiment 2

[0027] A set of superplastic forming dies for metal matrix composites was made with the alloy of the invention.

[0028] Such as figure 1 As shown, the external dimensions of the mold are: Φ320mm, of which the height of the upper mold base 1 is 300mm, the height of the lower mold base 2 is 300mm, the height of the upper and lower flat molds 3 and 4 is 120mm, the total height is 840mm, the upper and lower flat molds 3 and 4 and the upper and lower The mold bases 1 and 2 are fixedly connected with snap rings 5 ​​respectively, and the total weight of the mold is 500kg.

[0029] The mold material is smelted using a 300kg vacuum induction furnace, and selected pure metal raw materials: Cr, Ni, Mo, W, Co, Nb, Al, Ti, Zr, ferroboron, and electrode carbon.

[0030] Add chemical components according to requirements, and smelt according to nickel-based alloy vacuum smelting process.

[0031] Chemical composition is controlled in front of the furnace.

[0032] After the composition is...

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Abstract

The invention provides a cast superalloy die material for isothermal forging at 950-1050 DEG C. The material is composed of elements of C, Cr, Co, W, Mo, Al, Ti, B, Zr, Nb and Ni. According to the material, a multi-element alloying method is adopted, common heavy alloy elements such as W, Mo and Nb are adopted to replace expensive lanthanide alloy element Hf and refractory element Ta, and the ranges of the elements of C, W, Nb, Cr, Co, Al and Ti are reasonably controlled, so that the die manufacturing cost is reduced under the condition that the service life of a die is not shortened, the high-temperature strength and oxidation resistance of an alloy are guaranteed, the alloy manufacturing cost is reduced, and meanwhile, it is guaranteed that the alloy has high high-temperature strength and oxidation resistance, and conditions are created for expanding popularization of the superplastic forming process.

Description

technical field [0001] The invention belongs to the field of metal materials, and relates to a casting superalloy mold material for isothermal forging at 950-1050°C. Background technique [0002] Isothermal superplastic forming uses the superplastic properties of materials to complete the forming process of parts. It has the advantages of good mold filling, low deformation stress, and uniform structure. It is suitable for the production of difficult-to-deform superalloys, intermetallic compounds, and complex-shaped forgings of titanium alloys. Now it has become the main production method of titanium alloy and superalloy structural parts for aerospace at home and abroad. [0003] Superplasticity in superalloys and titanium alloys is a high temperature property of the material. Isothermal superplastic forming needs to be completed within the superplastic temperature range of the material. In order to ensure that the temperature of the material remains unchanged during the def...

Claims

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Application Information

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IPC IPC(8): C22C19/05C22C1/02B22C9/04B22C9/02
CPCB22C9/02B22C9/04C22C1/023C22C19/057
Inventor 庞克昌王立荣陈志强吴瑞恒
Owner 上海金甸机电设备成套有限公司
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