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Nickel-based alloy and preparation method and application thereof

A nickel-based alloy and alloy liquid technology, applied in the field of nickel-based alloys and their preparation, can solve the problems of poor corrosion resistance of supercritical equipment, achieve good anti-oxidation and thermal corrosion resistance, have good toughness, and reduce stacking layers. The effect of wrong energy

Inactive Publication Date: 2015-08-26
ENN SCI & TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a kind of nickel-based alloy and its preparation method and application, to solve the existing Inconel-625 material or Hastelloy C-276 material in the oxidizing medium that multiple ions coexist, cause the anti-corrosion of supercritical equipment The problem of poor ability

Method used

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  • Nickel-based alloy and preparation method and application thereof

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preparation example Construction

[0047] The present invention also provides a method for preparing the above-mentioned nickel-based alloy, comprising the following steps:

[0048] Step 1, take Ni, Cr, Ti, Mn, Fe, trace element respectively; Wherein, by mass fraction, the mass fraction of Cr is 35%-42%, the mass fraction of Ti is 1.3%-1.7%, the mass fraction of Mn The mass fraction is 0.1%-0.3%, the mass fraction of Fe is 0.5%-5%, the mass fraction of trace elements is 0.1-0.6%, and the balance is Ni; and Ni, Cr, Ti, Mn, Fe, trace elements The mass fraction of the substituted C is greater than 0 and less than or equal to 0.1%;

[0049] Step 2, Ni, Cr, Mn, Fe are mixed and melted under vacuum conditions until they are cleared, and the molten metal liquid after clearing is obtained;

[0050] Step 3: Refining the melted molten metal after refining, and cooling down until the surface of the obtained refining liquid freezes conjunctiva;

[0051] Step 4, blowing protective gas into the refining solution whose surf...

Embodiment 1

[0061] The nickel-based alloy provided in this embodiment includes Ni, Cr, Ti, Mn, Fe, and C introduced by Ni, Cr, Ti, Mn, Fe; wherein, in terms of mass fraction, the mass fraction of Cr in the nickel-based alloy The mass fraction of Ti is 1.3%, the mass fraction of Mn is 0.2%, the mass fraction of Fe is 2.3%, the mass fraction of C is greater than 0 and less than or equal to 0.1%, and the balance is Ni.

[0062] The preparation method of the nickel-based alloy provided in this embodiment comprises the following steps:

[0063] Step 1, take by weighing Ni, Cr, Ti, Mn, Fe respectively; Wherein, in mass fraction, the mass fraction of Cr is 38.2%, the mass fraction of Ti is 1.3%, the mass fraction of Mn is 0.2%, Fe's The mass fraction is 2.3%, and the balance is Ni; and the mass fraction of C inevitably substituted in Ni, Cr, Ti, Mn, and Fe is greater than 0 and less than or equal to 0.1%;

[0064] Step 2: Add Ni, Cr, Mn, Fe into the vacuum induction furnace, evacuate to make th...

Embodiment 2

[0069] The nickel-based alloy provided in this embodiment includes Ni, Cr, Ti, Mn, Fe, and C introduced by Ni, Cr, Ti, Mn, Fe; wherein, in terms of mass fraction, the mass fraction of Cr in the nickel-based alloy The mass fraction of Ti is 1.5%, the mass fraction of Mn is 0.1%, the mass fraction of Fe is 5.0%, the mass fraction of C is greater than 0 and less than or equal to 0.1%, and the balance is Ni.

[0070] The preparation method of the nickel-based alloy provided in this embodiment comprises the following steps:

[0071] Step 1, take by weighing Ni, Cr, Ti, Mn, Fe respectively; Wherein, in mass fraction, the mass fraction of Cr is 35%, the mass fraction of Ti is 1.5%, the mass fraction of Mn is 0.1%, Fe's The mass fraction is 5.0%, and the balance is Ni; and the mass fraction of C inevitably substituted in Ni, Cr, Ti, Mn, and Fe is greater than 0 and less than or equal to 0.1%;

[0072]Step 2: Add Ni, Cr, Mn, Fe into the vacuum induction furnace, evacuate to make the v...

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Abstract

The invention discloses nickel-based alloy and a preparation method and application thereof, and relates to the technical field of anti-corrosion materials. The nickel-based alloy and the preparation method and application thereof aim to solve the problem that an existing Inconel-625 material or a Hastelloy C-276 material causes poor corrosion resistance of supercritical equipment in an oxidizing medium where various ions coexist. The nickel-based alloy comprises, by mass, 35-42% of Cr, 1.3-1.7% of Ti, 0.1-0.3% of Mn, 0.5-5% of Fe, 0-0.1% of C, 0-0.6% of microelements and the balance Ni. According to the preparation method of the nickel-based alloy, Ni, Cr, Mn and Fe are mixed and melted under a vacuum condition till being clarified, then refining is carried out, after refining is finished, Ti and the microelements are added and evenly stirred, desulfuration is carried out, and finally casting moulding is carried out to obtain the nickel-based alloy. The nickel-based alloy can be used in the supercritical equipment as a corrosion-resistant material.

Description

technical field [0001] The invention relates to the technical field of corrosion-resistant materials, in particular to a nickel-based alloy and its preparation method and application. Background technique [0002] At present, with the emphasis on environmental protection in various countries, correspondingly higher requirements are put forward for the treatment of industrial wastewater and urban sewage. Supercritical water oxidation treatment technology uses supercritical water as a medium to decompose organic matter contained in wastewater or sewage into simple and non-toxic small molecular compounds such as water and carbon dioxide under high temperature and high pressure conditions. Because supercritical water oxidation treatment technology can remove almost 100% of the organic matter contained in wastewater or sewage, and the organic matter is completely oxidized in a fully enclosed state without secondary pollution. Therefore, this technology has been paid more and more...

Claims

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Application Information

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IPC IPC(8): C22C19/05C22C1/06
Inventor 刘扬程乐明齐孝丰张雨忠
Owner ENN SCI & TECH DEV
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