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Corrosion-resistant nickel-base alloy overlay welding powder

A technology of nickel-based alloy and alloy powder, which is applied in welding medium, welding equipment, metal processing equipment, etc., can solve problems such as poor effect, and achieve the effect of improving service life and good manufacturability

Active Publication Date: 2013-01-02
TIANJIN ZHUJIN METAL SURFACE ENG MATERIALTECH DEV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Corrosion-resistant nickel-based alloys have many patents in the world, such as Hastelloy C276, Inconel 625, etc., which are used in drilling tools for oil and gas wells with high sulfur content in my country, but the effect is still not good

Method used

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  • Corrosion-resistant nickel-base alloy overlay welding powder

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A corrosion-resistant nickel-based alloy surfacing welding powder, by weight %, has the following composition:

[0018] Cr 20 Mo 10 Co 6 Zr 0.5Re 0.5 Mn 1 Si2

[0019] B1.5 Ni balance impurity content 0.05

Embodiment 2

[0021] A corrosion-resistant nickel-based alloy surfacing welding powder, by weight %, has the following composition:

[0022] Cr 24 Mo 12 Co 7 Zr 0.8 Re 0.8 Mn 1.2 Si 2.3

[0023] B 1.8 Ni balance impurity content 0.05

Embodiment 3

[0025] A corrosion-resistant nickel-based alloy surfacing welding powder, by weight %, has the following composition:

[0026] Cr 28 Mo 14 Co 8 Zr 1 Re 1 Mn 1.5 Si 2.5

[0027] B2 Ni balance impurity content 0.05

[0028] In Examples 1, 2 and 3, Ni:Co is 5:1-10:1; Cr:Mo is 2:1; in the process of making alloy powder, Mn, Zr, Re are added one by one according to this order.

[0029] The corrosion-resistant nickel-based alloy surfacing welding powder of the invention is produced by melting in an induction heating furnace and atomizing high-purity nitrogen gas. The powder appearance is silver-gray, the spherical particle powder has good fluidity (14s / 50g), and the bulk density is high (4.6g / cm 3 ), the oxygen content is less than or equal to 500PPM, and the desirable particle size range is 212-20μm.

[0030] The embodiment 2 of the corrosion-resistant nickel-based alloy surfacing welding powder of the present invention is compared with Hastelloy C276 and Inconel 625 alloys in t...

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Abstract

The invention provides a corrosion-resistant nickel-base alloy overlay welding powder which comprises the following components in percentage by weight: 20-28% of Cr, 10-14% of Mo, 6-8% of Co, 1-1.5% of Mn, 0.5-1% of Zr, 0.5-1% of Re, 2-2.5% of Si, 1.5-2% of B, at most 0.05% of impurity and the balance of Ni. Due to the adoption of the technical scheme, the strong corrosion resistance of the prepared nickel-base alloy overlay welding powder is much better than that of any existing other alloy powder in the patent at home and abroad; and the corrosion-resistant nickel-base alloy overlay welding powder is suitable for plasma arc overlay welding, has favorable laser cladding processibility, completely satisfies the requirement of corrosion resistance for sulfur-containing high oil gas well drilling tools, and greatly prolongs the service life of the drilling tool.

Description

technical field [0001] The invention belongs to the technical field of metal alloy powder for surface coating, and in particular relates to a corrosion-resistant nickel-based alloy surfacing welding powder. Background technique [0002] In the existing sulfide-containing oil and gas well environment, drilling tools are prone to sulfide stress corrosion. With the increase of the concentration of NaCl and other acidic substances in the drilling fluid, the corrosion rate will be significantly accelerated, and the H 2 S, CO 2 The corrosion of drilling tools, molten salt, etc. are mutually promoted. Corrosion-resistant nickel-based alloys have many patents in the world, such as Hastelloy C276, Inconel 625, etc., which are used in drilling tools for oil and gas wells with high sulfur content in my country, but the effect is still not good. In order to prolong the service life of the drilling tool, the anti-corrosion coating material on the surface of the drilling tool developed ...

Claims

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Application Information

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IPC IPC(8): C22C19/03B23K35/32
Inventor 钱铸
Owner TIANJIN ZHUJIN METAL SURFACE ENG MATERIALTECH DEV
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