Nickel-base spraying smelting alloy powder and its preparation process

A melting alloy, nickel-based technology, applied in the field of nickel-based fused alloy powder, can solve problems such as poor wear resistance, and achieve the effects of good wear resistance and strong precipitation strengthening

Inactive Publication Date: 2005-06-08
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the disadvantage of poor wear resistance of the existing nickel-based alloy powder for spray melting, the main technical problem solved by the present invention is to provide a nickel-base spray-melt alloy powder with better wear resistance and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026]Select ferrosilicon, ferrochromium, ferrovanadium, nickel, ferroboron and aluminum as raw materials, take materials according to the content of each element that needs to be controlled in nickel-based spray-melted alloy powder, and use ordinary intermediate frequency induction furnace to smelt them into alloys; the alloy composition is controlled at: C 0.40%, Si 3.5%, B 2.5%, Cr 13.0%, V 0.5%, Al 0.5%, Fe≤17.0%, S≤0.03%, P≤0.03%, O≤0.08%, Ni balance, the above are all Percent by weight, the sum of the percentages is 100%, and then use the water atomization method to make the alloy into a nickel-based spray with a particle size of -150 ~ +320 mesh (two-step spray melting), -320 mesh (one-step spray melting) Fused alloy powder. The melt-spray samples made of spray-melt alloy powder were tested against the same metal material Q345A according to the standard of GB12444.2-1990 "Metal Wear Test Method-Ring Block Type Wear Test", and the test was carried out at 20°C (normal tem...

Embodiment 2

[0028] Select ferrosilicon, ferrochromium, ferrovanadium, nickel, ferroboron and aluminum as raw materials, take materials according to the content of each element that needs to be controlled in nickel-based spray-melted alloy powder, and use ordinary medium-frequency induction furnace to smelt them into alloys. The alloy composition is controlled at: C 1.0%, Si 4.1%, B 4.2%, Cr 17.0%, V 1.5%, Al 3.2%, Fe≤17.0%, S≤0.03%, P≤0.03%, O≤0.08%, Ni balance, the above are all Percent by weight, the sum of the percentages is 100%, and then use the water atomization method to make the alloy into a nickel-based spray with a particle size of -150 ~ +320 mesh (two-step spray melting), -320 mesh (one-step spray melting) Fused alloy powder. The melt-spray samples made of spray-melt alloy powder were tested against the same metal material Q345A according to the standard of GB12444.2-1990 "Metal Wear Test Method-Ring Block Type Wear Test", and the test was carried out at 20°C (normal temperatu...

Embodiment 3

[0030] Select ferrosilicon, ferromolybdenum, ferrochrome, ferrovanadium, nickel, ferroboron, ferroniobium, ferrotungsten, ferrotitanium, aluminum and copper as raw materials, and take materials according to the content of each element that needs to be controlled in nickel-based spray-melted alloy powder. Ordinary intermediate frequency induction furnace is smelted into alloy, and the alloy composition is controlled at: C 1.2%, Si 5.0%, B 4.5%, Cr 20.0%, V 1.8%, Al 4.0%, Nb 1.0%, Ti 1.0%, W 6.0%, Mo 6.0%, Cu 4.0%, Fe ≤ 17.0%, S ≤ 0.03%, P ≤ 0.03%, O ≤ 0.08%, the remainder of Ni, the above are weight percentages, and the sum of the percentages is 100%, and then the gas atomization method is used The alloy is made into nickel-based spray-melt alloy powder with a particle size of -150 to +320 mesh (two-step spray-melt) and -320 mesh (one-step spray-melt). The melt-spray samples made of spray-melt alloy powder were tested against the same metal material Q345A according to the stand...

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Abstract

A Ni-based alloy powder for processing or reparing the surface of iron and steel workpiece by spray and melting it contains C (0.4-1.2%), Si (3.5-5.0), B(2.5-4.5), Cr (13.0-20.0), Fe (0-17), V (0.5-1.8), Al (0.5-4.0), Ni and one of Nb, Ti, W, Mo and Cu. Its advantage is high antiwear property.

Description

technical field [0001] The invention belongs to the technical field of welding processing, and in particular relates to a nickel-based spray-melting alloy powder. Background technique [0002] Spray melting, also known as spray welding, is mainly divided into flame spray melting and plasma spray melting. The spray melting alloy powder used is self-fluxing alloy powder. The self-fluxing alloy powder currently used mainly includes iron-based alloy powder, nickel-based alloy powder and cobalt There are three types of base alloy powder. Among them, the particle size of self-fluxing alloy powder used in flame spray melting is generally -150 mesh to +320 mesh (two-step spray melting) and -320 mesh (one-step spray melting); two-step spray melting and one-step spray melting refer to In the process of using alloy powder, the two-step spraying method refers to spraying powder to the required size first, and then remelting. Remelting is carried out immediately after powdering until t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/30C22C1/02
Inventor 林剑东何藩刘敏刘洪明冯向琴
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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