Electrolytic polishing solution and electrolytic polishing process used for additive manufacturing of titanium alloy fatigue specimen

An electrolytic polishing and additive manufacturing technology, applied in the field of electrolytic polishing process, can solve the problems of complex composition of titanium alloy fatigue samples and poor polishing process stability, and achieve the effects of fast polishing speed, easy operation and simple production.

Pending Publication Date: 2020-06-30
秦聪祥
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Problems solved by technology

[0004] Aiming at the above-mentioned deficiencies existing in the prior art, the present invention solves the problems of complex composition and poor stability of the polishing process in the additive manufacturing of titanium alloy fatigue samples, and provides an easy-to-operate, high-quality polished surface for additive manufacturing. Electrolytic Polishing Process for Manufacturing Titanium Alloy Fatigue Samples

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  • Electrolytic polishing solution and electrolytic polishing process used for additive manufacturing of titanium alloy fatigue specimen
  • Electrolytic polishing solution and electrolytic polishing process used for additive manufacturing of titanium alloy fatigue specimen

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Embodiment Construction

[0018] For ease of understanding, the technical solutions of the present invention are further specifically described below in conjunction with the accompanying drawings and through embodiments:

[0019] An electrolytic polishing solution for additively manufacturing titanium alloy fatigue samples, the polishing solution is prepared by volume fraction of 5-10% perchloric acid, 15-30% n-butanol and 60-80% methanol.

[0020] Methanol, perchloric acid and n-butanol were chemically pure or analytically pure reagents.

[0021] The electrolytic polishing process for the additive manufacturing of titanium alloy fatigue samples, the specific implementation steps are as follows:

[0022] 1. Coarse grinding of samples: Additively manufactured Ti6Al4V alloy fatigue samples (with a maximum diameter of length 50mm) for metallographic sandpaper grinding, sandpaper models are 280 mesh, 400 mesh, 600 mesh, 800 mesh and 1200 mesh. Wash surface and blow dry.

[0023] 2. Prepare electrolytic...

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Abstract

The invention relates to an electrolytic polishing solution and electrolytic polishing process used for additive manufacturing of a titanium alloy fatigue specimen. According to the electrolytic polishing solution and electrolytic polishing process used for additive manufacturing of the titanium alloy fatigue specimen, the polishing solution is composed of methanol, perchloric acid and n-butyl alcohol, the polishing process is simple in equipment and easy to operate, the surface smoothness is improved, meanwhile, the stress of the surface layer of the specimen can be reduced, and the influenceof the surface roughness and the surface residual stress in the fatigue specimen on test data is effectively avoided.

Description

technical field [0001] The invention relates to the field of metal surface treatment, and relates to an electrolytic polishing process suitable for the preparation of titanium alloy fatigue samples for additive manufacturing. Background technique [0002] As an advanced forming process, metal additive manufacturing (MAM) technology can realize mold-free, rapid and near-net shape of high-performance complex structural metal parts, and has attracted great attention from material scientists and industries in recent years. . Metal materials for additive manufacturing mainly include titanium alloys, high-temperature alloys, ultra-high-strength steels, stainless steels, etc. From the perspective of research and application, the technology maturity of additive manufacturing Ti-6Al-4V alloy is the highest. At present, the comprehensive mechanical properties of additively manufactured Ti-6Al-4V alloys are basically equivalent to those of forgings, but there is still a certain gap b...

Claims

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Application Information

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IPC IPC(8): C25F3/26B22F3/24B33Y40/20
CPCB22F3/24B22F2003/247B33Y40/00C25F3/26
Inventor 秦聪祥方晓英孙聪
Owner 秦聪祥
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