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Additive repair material suitable for ocean oscillation working condition and molten pool stability-shape regulation and control method

A technology for repairing materials and working conditions, applied in the direction of additive processing, etc., can solve the problems of poor molten pool stability, corrosion resistance, low friction and wear performance, uneven energy distribution, etc., to improve friction and wear performance, improve defect problems, The effect of high application value

Active Publication Date: 2020-12-25
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of poor stability of molten pool during processing due to the influence of vibration in the processing process of additive repair technology under the condition of marine vibration, and the unevenness of energy distribution in the repairing tissue has powder unfused, pores and cracks, etc. Defects, low corrosion resistance, low friction and wear performance, for this purpose, a method for additive repair materials and molten pool stability-shape regulation suitable for marine oscillating conditions is provided

Method used

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  • Additive repair material suitable for ocean oscillation working condition and molten pool stability-shape regulation and control method
  • Additive repair material suitable for ocean oscillation working condition and molten pool stability-shape regulation and control method
  • Additive repair material suitable for ocean oscillation working condition and molten pool stability-shape regulation and control method

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specific Embodiment approach 1

[0019] Specific implementation mode 1: This implementation mode is suitable for additive repair materials under the condition of marine vibration, according to the mass percentage content of 94-98.95wt.% stainless steel matrix powder, 1-5wt.% anti-vibration additive phase and 0.05-1wt. .% corrosion resistance modified strengthening phase composition;

[0020] The anti-shock additive phase is carbide (Ti, W, Nb) x C y or nitride (Ti, Si) x N y ; The corrosion-resistant modified strengthening phase is (light) rare earth oxide.

[0021] This embodiment is aimed at problems such as poor stability of the molten pool and shape defects in the additive repair process under the condition of marine oscillations. The present invention selects two types of materials, the anti-shock additive phase and the corrosion-resistant modified strengthening phase, as the modified phase to solve the above problems. . Among them, the anti-shock additive phase is carbide (Ti, W, Nb) with good high...

specific Embodiment approach 2

[0023] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that the corrosion resistance modification strengthening phase is CeO 2 , La 2 o 3 、Nd 2 o 3 or Pm 2 o 3 .

specific Embodiment approach 3

[0024] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that the particle size range of the stainless steel matrix powder is 48-150 μm.

[0025] In this embodiment, the stainless steel matrix powder is a spherical powder, which is the same material as the workpiece to be repaired, and is the same stainless steel.

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Abstract

The invention discloses an additive repair material suitable for an ocean oscillation working condition and a molten pool stability-shape regulation and control method, belongs to the technical fieldof additive repair, and aims to solve the problems of poor molten pool stability in a machining process and relatively low corrosion resistance and frictional wear resistance due to the fact that an additive repair technology is influenced by oscillation in the machining process under the ocean oscillation working condition. An additive repair material suitable for the ocean oscillation working condition is prepared from the following components including, by mass percent, 94-98.95 wt.% of stainless steel matrix powder, 1-5wt.% of an anti-oscillation adding phase and 0.05-1 wt.% of a corrosion-resistant modified strengthening phase. The anti-oscillation adding phase is carbide or nitride. The corrosion-resistant modified strengthening phase is light rare earth oxide. The modified phase isadded into the stainless steel powder matrix, so that the stability of a molten pool in the machining process is improved, the defect problem caused by the ocean oscillation working condition is solved, and the corrosion resistance and frictional wear resistance of the material are greatly improved.

Description

technical field [0001] The invention belongs to the technical field of additive restoration, and in particular relates to an additive restoration material suitable for marine oscillating working conditions and a melt pool stability-shape regulation method using the same. Background technique [0002] Stainless steel is widely used in the shipbuilding industry because of its good corrosion resistance, good weldability and structural reliability, such as: flanges, shafts, turbine blades and rudders. The working conditions are harsh, and the damage to marine parts will increase significantly. Therefore, timely and effective online maintenance technology is an important guarantee for ship safety and combat effectiveness. Additive repair technology can accurately and quickly repair damaged parts through layer-by-layer accumulation, which is one of the important means of parts repair. However, when repairing marine parts under oceangoing conditions, the ship will be affected by f...

Claims

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Application Information

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IPC IPC(8): B22F1/00B22F3/105B33Y10/00B33Y40/10B33Y70/10
CPCB22F1/0003B33Y10/00B33Y40/10B33Y70/10Y02P10/25
Inventor 崔秀芳张威金国赵耀刘二宝王珺琰
Owner HARBIN ENG UNIV