Duplex stainless steel wire material for arc additives and duplex stainless steel member

A technology of duplex stainless steel and wire materials, which can be used in the direction of additive processing, additive manufacturing, process efficiency improvement, etc., and can solve the problem of high austenite content

Active Publication Date: 2021-09-10
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the technical problem that the austenite content in arc additive parts with typical duplex stainless steel welding wire as raw material is too high, and provides a duplex stainle...

Method used

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  • Duplex stainless steel wire material for arc additives and duplex stainless steel member
  • Duplex stainless steel wire material for arc additives and duplex stainless steel member
  • Duplex stainless steel wire material for arc additives and duplex stainless steel member

Examples

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Embodiment 1

[0029] An arc of this embodiment by using duplex stainless steel wire material, a steel core and a metal powder composition, wherein the mass of metal powder core per total mass of wire (i.e. fill rate) of 25%.

[0030] Steel is 304L stainless steel, the cross-sectional dimensions of 0.4 * 10mm, a mass fraction of its chemical composition is: 18.16% chromium, 0.00% molybdenum, 8.16% Ni, 0.21% Si, 1.51% Mn, 0.05% nitrogen, and balance iron.

[0031] Additive arc embodiment of the present embodiment was prepared as follows using duplex stainless steel wire:

[0032] (1) the mass fraction of 90.00% chromium metal powder, nickel metal powder mass fraction of 0.00%, 10.00% iron powder content ratio by weighing the powder mixed for 10 minutes to obtain a mixed metal powder; Example embodiments are used in the metal powder Shanghai Jiuding Co powder material is metal powder, powder particle size of 80 mesh;

[0033] (2) A 304L stainless steel strip after the ultrasonic cleaning equipment...

Embodiment 2

[0041] An arc of this embodiment by using duplex stainless steel wire material, a steel core and a metal powder composition, wherein the mass of metal powder core per total mass of wire (i.e. fill rate) of 25%.

[0042] Steel is 304L stainless steel, the cross-sectional dimensions of 0.4 * 10mm, a mass fraction of its chemical composition is: 18.16% chromium, 0.00% molybdenum, 8.16% Ni, 0.21% Si, 1.51% Mn, 0.05% nitrogen, and balance iron.

[0043] Additive arc embodiment of the present embodiment was prepared as follows using duplex stainless steel wire:

[0044] (1) the mass fraction of 55.00% chromium metal powder, nickel metal powder mass fraction of 5.50%, 39.50% iron powder content ratio by weighing the powder mixed for 10 minutes to obtain a mixed metal powder; metal powders embodiment are used Shanghai Jiuding Co powder material is metal powder, powder particle size of 80 mesh;

[0045] (2) A 304L stainless steel strip after the ultrasonic cleaning equipment, with a conventi...

Embodiment 3

[0051] An arc of this embodiment by using duplex stainless steel wire material, a steel core and a metal powder composition, wherein the mass of metal powder core per total mass of wire (i.e. fill rate) of 20%.

[0052] Steel is 304L stainless steel, the cross-sectional dimensions of 0.4 * 10mm, a mass fraction of its chemical composition is: 18.16% chromium, 0.00% molybdenum, 8.16% Ni, 0.21% Si, 1.51% Mn, 0.05% nitrogen, and balance iron.

[0053] Additive arc embodiment of the present embodiment was prepared as follows using duplex stainless steel wire:

[0054] (1) the mass fraction of 90% chromium metal powder, nickel metal powder content of 0%, metal iron content of 10% by the proportion of mixed powder weighed 10 minutes to obtain a mixed metal powder; Example embodiments are used in the metal powder Shanghai Jiuding Co powder material is metal powder, powder particle size of 80 mesh;

[0055] (2) A 304L stainless steel strip after the ultrasonic cleaning equipment, with a c...

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Abstract

The invention belongs to the technical field of arc additives, and discloses a duplex stainless steel wire material for arc additives. The duplex stainless steel wire material is composed of a metal powder core and a steel strip, the metal powder core comprises, by mass, 55-90% of chromium powder, 0-5.5% of nickel powder and the balance powder; the invention further discloses a duplex stainless steel member, which is obtained by the duplex stainless steel wire through an arc additive process. By means of the duplex stainless steel wire for the arc additives, the duplex stainless steel member with the austenite content being about 50% and meeting the standard specification can be directly obtained through arc additive manufacturing; the corrosion resistance of the duplex stainless steel member is greatly improved, and the cost of the duplex stainless steel member is obviously reduced; and meanwhile, the duplex stainless steel member which is complex in shape, high in strength and high in corrosion resistance can be produced and manufactured.

Description

Technical field [0001] The present invention belongs to the technical field of the arc Additive, particularly, relates to a duplex stainless steel material by arc metal cored wire, duplex stainless steel member and the metal cored wire arc Additive obtained. Background technique [0002] Duplex stainless steel is a composite material consisting of metal structure of austenite and ferrite composition, both high strength and excellent toughness austenite ferrite. Compared to conventional austenitic stainless steel, duplex stainless steel have better mechanical and corrosion resistance at room temperature, and helps reduce the weight member, and therefore has in nuclear power, ships, chemicals, bridges, buildings, etc. important applications. However, duplex stainless steel of higher strength and work hardening rate of a material making it more difficult forming. Currently, a relatively simple shape of duplex stainless steel member, e.g. chemical cargo ship the cartridge walls, pipi...

Claims

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Application Information

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IPC IPC(8): B22F10/28C22C27/06B33Y70/10B33Y80/00
CPCB22F10/28C22C27/06B33Y70/00B33Y80/00Y02P10/25
Inventor 程方杰张一琪武少杰程尚华
Owner TIANJIN UNIV
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