JP2016037641A - Three-dimensional molded article and production method thereof - Google Patents

Three-dimensional molded article and production method thereof Download PDF

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JP2016037641A
JP2016037641A JP2014161983A JP2014161983A JP2016037641A JP 2016037641 A JP2016037641 A JP 2016037641A JP 2014161983 A JP2014161983 A JP 2014161983A JP 2014161983 A JP2014161983 A JP 2014161983A JP 2016037641 A JP2016037641 A JP 2016037641A
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top coat
dimensional structure
metal
base material
metal film
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JP6506926B2 (en
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律政 法邑
Ritsumasa Homura
律政 法邑
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HOUMURA SANGYO KK
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PROBLEM TO BE SOLVED: To achieve excellent appearance and texture, while having a light weight.SOLUTION: A three-dimensional molded article is produced by integrating together a three-dimensional base material 11 formed by subjecting a non-metal lamination material to lamination molding, a metallic film 12 formed by thermally spraying zinc onto the surface of the base material 11, and a top coat 13 of a sprayed coating formed on the upper surface of the metallic film 12.SELECTED DRAWING: Figure 1

Description

この発明は、積層造形技術と溶射技術とを組み合わせることによって実現する任意形状の三次元造形物と、その製造方法に関する。   The present invention relates to a three-dimensional structure having an arbitrary shape realized by combining an additive manufacturing technique and a thermal spraying technique, and a manufacturing method thereof.

任意形状の三次元造形物を製造する技術として積層造形技術が知られている。積層造形技術は、物品の三次元形状データを薄い層状のスライスデータに加工して各層の断面形状と相対位置とを特定し、各層を順に積層して任意の三次元形状を造形するものであり、光造形法、粉末焼結積層造形法（ＳＬＳ法）、バインダジェット法（いわゆる３Ｄプリンティング）、溶融物堆積法（ＦＤＭ法）、インクジェット法、シート積層法などがある。なお、３Ｄプリンタの用語は、これらの造形方式に拘らず、比較的安価な模型造形用途に特化した装置を指すのが普通である。   The additive manufacturing technique is known as a technique for manufacturing a three-dimensional structure having an arbitrary shape. Laminate modeling technology processes the 3D shape data of articles into thin layered slice data, identifies the cross-sectional shape and relative position of each layer, and stacks each layer in order to model any 3D shape , Stereolithography, powder sintering additive manufacturing (SLS), binder jet (so-called 3D printing), melt deposition (FDM), inkjet, and sheet lamination. Note that the term 3D printer usually refers to a device specialized for relatively inexpensive model modeling applications, regardless of these modeling methods.

積層造形技術によれば、任意の形状の既存物品の複製品を製作することも容易である。そこで、軽量の複製品を製作するために、積層造形技術のＳＬＳ法により、対象物品の外形を忠実に複写するとともに、対象物品の内部を空洞化し、空洞内に軽量化用の内部構造パターンとして、たとえばハニカム構造パターンなどを組み込む手法が提案されている（特許文献１）。   According to the additive manufacturing technique, it is easy to produce a replica of an existing article having an arbitrary shape. Therefore, in order to produce a lightweight replica, the outer shape of the target article is faithfully copied by the SLS method of additive manufacturing technology, the inside of the target article is hollowed, and an internal structure pattern for weight reduction is formed in the cavity. For example, a method of incorporating a honeycomb structure pattern or the like has been proposed (Patent Document 1).

特開２００４−３４２９８号公報JP 2004-34298 A

かかる従来技術によるときは、ＳＬＳ法により積層材料として金属粉末を用いるので、積層造形装置が高額である上、内部構造パターンを有する空洞を設けることによって複製品を軽量化するので、空洞や内部構造パターンを最適化するための特殊な設計ステップが不可欠であり、煩雑であるという問題があった。   When such a conventional technique is used, the metal powder is used as the laminated material by the SLS method, so that the additive manufacturing apparatus is expensive and the duplicated product is reduced in weight by providing a cavity having an internal structure pattern. There is a problem that a special design step for optimizing the pattern is indispensable and complicated.

そこで、この発明の目的は、かかる従来技術の問題に鑑み、非金属性の積層材料による積層造形技術と、溶射技術とを組み合わせることによって、軽量でありながら、良好な外観、質感を実現し、必要に応じて耐久性、耐摩耗性、通電性などをも容易に実現可能な三次元造形物と、その製造方法を提供することにある。   Therefore, in view of the problems of the prior art, the object of the present invention is to realize a good appearance and texture while being lightweight by combining a layered modeling technique using a nonmetallic laminate material and a thermal spraying technique. An object of the present invention is to provide a three-dimensional structure that can easily achieve durability, wear resistance, electrical conductivity, and the like as required, and a method for manufacturing the same.

かかる目的を達成するためのこの出願に係る第１発明（請求項１の発明をいう、以下同じ）の構成は、非金属性の積層材料を積層造形して形成する三次元の下地素材と、下地素材の表面に亜鉛を溶射して形成する金属皮膜とを備えることをその要旨とする。   The structure of the first invention according to this application for achieving such an object (referring to the invention of claim 1, hereinafter the same) includes a three-dimensional base material formed by layering a nonmetallic laminate material, and The gist is to provide a metal film formed by spraying zinc on the surface of the base material.

なお、金属皮膜の表面を仕上げ処理することができる。   The surface of the metal film can be finished.

また、金属皮膜の上面にセラミック、金属、樹脂のいずれかの溶射皮膜のトップコートを形成してもよく、金属皮膜とトップコートとの間にＮi Ａl の溶射皮膜のボンドコートを介在させてもよく、トップコートの表面を仕上げ処理してもよい。   Alternatively, a top coat of ceramic, metal, or resin may be formed on the upper surface of the metal coating, or a Ni Al spray coating bond coat may be interposed between the metal coating and the top coat. Well, the surface of the top coat may be finished.

第２発明（請求項６の発明をいう、以下同じ）の構成は、非金属性の積層材料を積層造形して三次元の下地素材を形成し、下地素材の表面に亜鉛をアーク溶射して金属皮膜を形成することをその要旨とする。   The configuration of the second invention (referring to the invention of claim 6; the same applies hereinafter) is that a non-metallic laminate material is layered to form a three-dimensional substrate material, and zinc is arc sprayed on the surface of the substrate material. The gist is to form a metal film.

なお、金属皮膜の表面を仕上げ処理することができる。   The surface of the metal film can be finished.

また、金属皮膜の上面に溶射材料をフレーム溶射してトップコートを形成してもよく、トップコート用の溶射材料をフレーム溶射するに先き立って、金属皮膜の上面にＮi Ａl をフレーム溶射してボンドコートを形成してもよく、金属皮膜の上面に溶射材料をアーク溶射してトップコートを形成してもよい。   Alternatively, a top coat may be formed by flame spraying a thermal spray material on the upper surface of the metal coating, and Ni Al is flame sprayed on the upper surface of the metal coating prior to flame spraying the thermal spray material for the top coat. A bond coat may be formed, or a top coat may be formed by arc spraying a thermal spray material on the upper surface of the metal film.

さらに、トップコートの表面を仕上げ処理してもよく、亜鉛をアーク溶射するに先き立って、下地素材の表面をブラスト処理してもよい。   Furthermore, the surface of the topcoat may be finished, and the surface of the base material may be blasted prior to the arc spraying of zinc.

かかる第１発明の構成によるときは、三次元の下地素材は、たとえば紙、樹脂、石膏などの非金属性の積層材料を積層造形して形成するため、任意の三次元形状を実現するとともに、それ自体、必要十分に軽量にすることができる。一方、下地素材の表面に亜鉛を溶射して形成する金属皮膜は、それ自体を表層の加飾用の金属皮膜として利用してもよく、他の溶射材料のトップコートを上面に形成するための下地金属膜（アンダコート）として利用してもよい。金属皮膜の膜厚は、１００〜２００μｍが好適である。下地素材の積層ピッチの約０．１mmの段差を埋めるとともに、加飾用の金属皮膜として仕上げ処理を可能にし、あるいはトップコートの溶射時に下地素材への熱影響を軽減するためである。膜厚を２００μｍ超としても、溶射時間が長くなるだけで格別の効果がない。   When such a configuration of the first invention is used, the three-dimensional base material is formed by layering a non-metallic laminated material such as paper, resin, gypsum, etc. As such, it can be made light enough. On the other hand, the metal film formed by spraying zinc on the surface of the base material may be used as a metal film for decoration of the surface layer itself, for forming a top coat of another sprayed material on the upper surface. It may be used as a base metal film (undercoat). The film thickness of the metal film is preferably 100 to 200 μm. This is to fill a step of about 0.1 mm in the stacking pitch of the base material, to allow finishing treatment as a decorative metal film, or to reduce the thermal effect on the base material during topcoat spraying. Even if the film thickness is more than 200 μm, there is no particular effect because the spraying time becomes longer.

金属皮膜の上面のトップコートは、たとえばセラミックや、アルミニウム、銅、すずなどの金属、ナイロン樹脂などの溶射材料をフレーム溶射して形成するか、ステンレス鋼、アルミニウムなどの通電性の金属ワイヤの溶射材料をアーク溶射して形成する。なお、セラミックや金属の溶射材料をフレーム溶射する場合は、それに先き立って、金属皮膜の上面にＮi Ａl をフレーム溶射してボンドコートを形成することが好ましい。トップコートの膜厚は、約１００μｍないし１００μｍ以上とするのがよく、ボンドコートの膜厚は、約５０μｍが好ましい。   The top coat on the upper surface of the metal film is formed by flame spraying of a thermal spray material such as ceramic, aluminum, copper, tin, or nylon resin, or by spraying a conductive metal wire such as stainless steel or aluminum. Material is formed by arc spraying. When flame spraying a ceramic or metal spray material, it is preferable to form a bond coat by flame spraying Ni Al on the upper surface of the metal film prior to flame spraying. The film thickness of the top coat is preferably about 100 μm to 100 μm or more, and the film thickness of the bond coat is preferably about 50 μm.

トップコートの表面の仕上げ処理は、トップコートが金属の場合は、サンドペーパ、ブラシ、バレル、バフなどの研磨処理により良好な金属光沢を実現することができ、トップコートがナイロン樹脂の場合、トーチなどで樹脂被膜を溶かし込むフュージング処理が好ましい。また、トップコートがセラミックや金属の場合、エポキシ樹脂などの封孔剤を塗布して耐久性を向上させてもよく、さらに塗装仕上げしてもよい。   When the top coat is made of metal, a good metallic luster can be achieved by sandpaper, brush, barrel, buffing, etc. when the top coat is made of metal. A fusing treatment in which the resin film is dissolved is preferable. Further, when the top coat is ceramic or metal, a sealing agent such as an epoxy resin may be applied to improve the durability, and may further be painted.

なお、トップコートを省略し、亜鉛の金属皮膜をそのまま加飾用の金属皮膜として利用するときは、金属のトップコートと同様の仕上げ処理を施すことができる。ただし、亜鉛の加飾用の金属皮膜や、セラミック、金属、樹脂などのトップコートは、格別の仕上げ処理をせずに、溶射皮膜のままとしてもよい。   In addition, when a top coat is abbreviate | omitted and a zinc metal membrane | film | coat is utilized as a metal membrane | film | coat for decoration as it is, the finishing process similar to a metal top coat can be performed. However, the metal coating for decorating zinc and the top coat made of ceramic, metal, resin, etc. may be left as a sprayed coating without any special finishing treatment.

第２発明の構成によるときは、第１発明に係る三次元造形物を容易に製造することができる。ただし、下地素材の表面に形成する金属皮膜は、亜鉛をアーク溶射することにより、下地素材の表面を焦がしたり焼損させたりするおそれがない。なお、金属皮膜の上面にセラミック、金属、ナイロン樹脂などの溶射材料をフレーム溶射してトップコートを形成することができ、通電性の金属ワイヤの溶射材料をアーク溶射してトップコートを形成することもできる。   According to the configuration of the second invention, the three-dimensional structure according to the first invention can be easily manufactured. However, the metal film formed on the surface of the base material has no risk of scorching or burning the surface of the base material by arc spraying zinc. A top coat can be formed by flame spraying a thermal spray material such as ceramic, metal, nylon resin, etc. on the upper surface of the metal coating, and a top coat can be formed by arc spraying a thermal spray material of a conductive metal wire. You can also.

ただし、トップコート用の溶射材料としてセラミック、金属をフレーム溶射するときは、それに先き立って、金属皮膜の上面にボンドコートを形成することが好ましい。また、下地素材の表面をブラスト処理して亜鉛をアーク溶射すれば、金属皮膜のアンカ効果を高めることができる。   However, when flame spraying a ceramic or metal as the thermal spray material for the top coat, it is preferable to form a bond coat on the upper surface of the metal coating prior to flame spraying. Further, if the surface of the base material is blasted and zinc is arc sprayed, the anchor effect of the metal film can be enhanced.

なお、この発明において、フレーム溶射とは、ガス式溶射の一種であって、酸素・アセチレン混合ガスの燃焼炎などのガス炎を溶射の熱源に利用する溶射方式をいい、溶射粒子の加速に圧縮空気のジェットを用いる高速フレーム溶射を含むとともに、溶射材料が粉末状、線状、棒状の粉末式、溶線式、溶棒式の各フレーム溶射のいずれであってもよいものとする。   In the present invention, flame spraying is a type of gas spraying, which refers to a spraying method that uses a gas flame such as a combustion flame of an oxygen / acetylene mixed gas as a heat source for spraying, and compresses the sprayed particles for acceleration. In addition to high-speed flame spraying using an air jet, the thermal spray material may be any of powder, linear, rod-like powder type, hot wire type, and rod type flame sprays.

三次元造形物の模式断面図Schematic cross section of a three-dimensional structure 仕上げ処理の説明図表Explanation chart of finishing process 製造工程図Manufacturing process diagram

以下、図面を以って発明の実施の形態を説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

三次元造形物１０は、三次元の下地素材１１と、下地素材１１の表面に形成する亜鉛の金属皮膜１２と、金属皮膜１２の上面に形成するトップコート１３とを備えてなる（図１）。   The three-dimensional structure 10 includes a three-dimensional base material 11, a zinc metal film 12 formed on the surface of the base material 11, and a top coat 13 formed on the upper surface of the metal film 12 (FIG. 1). .

下地素材１１は、紙、樹脂、石膏などの非金属性の積層材料を積層造形することにより、任意の三次元形状に形成されている。すなわち、下地素材１１は、積層材料からなる層１１ａ、１１ａ…を順に積層しながら一体に固化して形成されている。ただし、下地素材１１は、中実であってもよく、内部に空洞部分を有していてもよい。   The base material 11 is formed into an arbitrary three-dimensional shape by laminating and modeling a non-metallic laminated material such as paper, resin, or gypsum. That is, the base material 11 is formed by solidifying integrally while sequentially laminating layers 11a, 11a. However, the base material 11 may be solid or may have a hollow portion inside.

金属皮膜１２は、下地素材１１の表面に亜鉛の溶射材料をアーク溶射して形成されている。金属皮膜１２は、膜厚１００〜２００μｍとする。   The metal coating 12 is formed by arc spraying a zinc spray material on the surface of the base material 11. The metal film 12 has a thickness of 100 to 200 μm.

トップコート１３は、セラミック、金属、ナイロン樹脂などのいずれかの溶射材料をフレーム溶射するか、通電性の金属ワイヤの溶射材料をアーク溶射することにより、金属皮膜１２の上面に形成されている。ただし、セラミック、金属の溶射材料をフレーム溶射するときは、それに先き立って、金属皮膜１２の上面にＮi Ａl をフレーム溶射し、膜厚５０μｍ程度のボンドコートを金属皮膜１２とトップコート１３との間に介在させるものとする。   The top coat 13 is formed on the upper surface of the metal coating 12 by flame spraying any one of the sprayed materials such as ceramic, metal, and nylon resin, or by arc spraying the thermally sprayed metal wire sprayed material. However, when flame spraying a ceramic or metal thermal spray material, prior to that, Ni Al is flame sprayed on the upper surface of the metal coating 12, and a bond coat having a thickness of about 50 μm is applied to the metal coating 12 and the top coat 13. It shall be interposed between

トップコート１３の表面は、溶射皮膜のままでもよいが、適切な仕上げ処理を施してもよい（図２）。すなわち、トップコート１３の溶射材料が金属の場合、研磨処理により良好な金属光沢を実現することができ、セラミックまたは金属の場合、封孔剤を塗布するとともに、必要に応じて塗装仕上げを併用することにより、特に屋外における耐久性を向上させることができ、樹脂の場合、トーチによるフュージング処理により皮膜の封孔、融着を図ることができる。   The surface of the top coat 13 may be a sprayed coating, but may be subjected to an appropriate finishing treatment (FIG. 2). That is, when the thermal spray material of the top coat 13 is a metal, a good metallic luster can be realized by polishing treatment, and when it is a ceramic or metal, a sealing agent is applied and a paint finish is used in combination as necessary. As a result, durability in the outdoors can be improved. In the case of resin, sealing and fusing of the film can be achieved by fusing treatment with a torch.

一方、図１において、トップコート１３を省略し、金属皮膜１２を表層の加飾用の金属皮膜としてもよい。また、このときの金属皮膜も、トップコート１３と同様に、溶射皮膜のままでもよく、適切な仕上げ処理を施してもよい。さらに、図１において、金属皮膜１２、トップコート１３は、下地素材１１の全面に形成するに代えて、下地素材１１の表面の一部にのみ形成してもよい。   On the other hand, in FIG. 1, the top coat 13 may be omitted, and the metal film 12 may be a metal film for decorating the surface layer. Also, the metal film at this time may be a sprayed film as in the case of the top coat 13, or may be subjected to an appropriate finishing treatment. Further, in FIG. 1, the metal film 12 and the top coat 13 may be formed only on a part of the surface of the base material 11 instead of being formed on the entire surface of the base material 11.

三次元造形物１０の製造手順は、たとえば図３のとおりである。   The manufacturing procedure of the three-dimensional structure 10 is, for example, as shown in FIG.

まず、紙、樹脂、石膏などの非金属性の積層材料を積層造形し（図３のステップ（１）、以下、単に（１）のように記す）、三次元の下地素材１１を形成する。なお、ステップ（１）の積層造形は、いわゆる３Ｄプリンタによることができる。   First, a non-metallic laminated material such as paper, resin, gypsum, and the like is layered (step (1) in FIG. 3, hereinafter simply referred to as (1)) to form a three-dimensional base material 11. In addition, the additive manufacturing of step (1) can be performed by a so-called 3D printer.

つづいて、下地素材１１の表面をブラスト処理し（２）、下地素材１１の表面に亜鉛をアーク溶射することにより（３）、金属皮膜１２を形成する。ただし、ステップ（２）のブラスト処理は、これを省略してもよい。   Subsequently, the surface of the base material 11 is blasted (2), and the surface of the base material 11 is arc sprayed with zinc (3) to form the metal film 12. However, this may be omitted in the blasting process in step (2).

その後、金属皮膜１２の上面にＮi Ａl をフレーム溶射して（４）、ボンドコートを形成し、セラミックや、アルミニウム、銅、すずなどの金属、ナイロン樹脂などのいずれかの溶射材料をフレーム溶射し（５）、金属皮膜１２の上面にトップコート１３を形成する。ただし、ステップ（５）において、ナイロン樹脂を溶射材料とする場合は、ステップ（４）のＮi Ａl によるボンドコートの形成を省略することができる。   Thereafter, NiAl is flame sprayed on the upper surface of the metal coating 12 (4) to form a bond coat, and flame spraying is performed on any of the thermal spraying materials such as ceramics, metals such as aluminum, copper and tin, and nylon resin. (5) A top coat 13 is formed on the upper surface of the metal film 12. However, when nylon resin is used as the thermal spray material in step (5), the formation of the bond coat with Ni Al in step (4) can be omitted.

つづいて、トップコート１３の材質により適切な仕上げ処理を施し（（６）、図２）、三次元造形物１０を完成させる。ただし、ステップ（６）の仕上げ処理を省略し、トップコート１３を溶射皮膜のままとしてもよい。   Subsequently, an appropriate finishing process is performed depending on the material of the top coat 13 ((6), FIG. 2), and the three-dimensional structure 10 is completed. However, the finishing process of step (6) may be omitted, and the top coat 13 may be left as a sprayed coating.

一方、図３において、ステップ（３）による金属皮膜１２の形成の後、金属皮膜１２の上面にステンレス鋼、アルミニウムなどの通電性の金属ワイヤの溶射材料をアーク溶射して（７）、トップコート１３を形成してもよい。また、図３において、ステップ（４）、（５）、（７）を省略し、下地素材１１上の金属皮膜１２を表層の加飾用の金属皮膜とし、仕上げ処理を施すことなく、または仕上げ処理を施して、三次元造形物１０としてもよい。   On the other hand, in FIG. 3, after the formation of the metal film 12 in step (3), a thermal spray material of a conductive metal wire such as stainless steel or aluminum is arc sprayed on the upper surface of the metal film 12 (7), and the top coat is formed. 13 may be formed. Further, in FIG. 3, steps (4), (5), (7) are omitted, and the metal film 12 on the base material 11 is used as a metal film for decorating the surface layer, and the finish is not performed or finished. It is good also as a three-dimensional structure 10 by processing.

この発明は、任意の三次元形状の物品の試作品、複製品などの他、任意の文字やマークなどを立体的に表示する銘板や看板、表示板などや、任意の立体形状の置物や装飾品などを製作する用途に対し、広く好適に適用することができる。   The present invention is a prototype, replica, etc. of an article having an arbitrary three-dimensional shape, a nameplate, a signboard, a display board, etc., which displays an arbitrary character or mark, etc. The present invention can be applied widely and suitably for the purpose of manufacturing products.

１０…三次元造形物
１１…下地素材
１２…金属皮膜
１３…トップコート

特許出願人 ホウムラ産業株式会社 10 ... Three-dimensional structure 11 ... Base material 12 ... Metal film 13 ... Top coat

Patent applicant Homura Sangyo Co., Ltd.

Claims (12)

非金属性の積層材料を積層造形して形成する三次元の下地素材と、該下地素材の表面に亜鉛を溶射して形成する金属皮膜とを備えてなる三次元造形物。   A three-dimensional structure comprising a three-dimensional base material formed by layered modeling of a non-metallic layered material and a metal film formed by spraying zinc on the surface of the base material. 前記金属皮膜の表面を仕上げ処理することを特徴とする請求項１記載の三次元造形物。   The three-dimensional structure according to claim 1, wherein the surface of the metal film is finished. 前記金属皮膜の上面にセラミック、金属、樹脂のいずれかの溶射皮膜のトップコートを形成することを特徴とする請求項１記載の三次元造形物。   The three-dimensional structure according to claim 1, wherein a top coat of a thermal spray coating of any one of ceramic, metal, and resin is formed on the upper surface of the metal coating. 前記金属皮膜と前記トップコートとの間にＮi Ａl の溶射皮膜のボンドコートを介在させることを特徴とする請求項３記載の三次元造形物。   The three-dimensional structure according to claim 3, wherein a bond coat of a Ni Al sprayed coating is interposed between the metal coating and the top coat. 前記トップコートの表面を仕上げ処理することを特徴とする請求項３または請求項４記載の三次元造形物。   The three-dimensional structure according to claim 3 or 4, wherein a surface of the top coat is finished. 非金属性の積層材料を積層造形して三次元の下地素材を形成し、下地素材の表面に亜鉛をアーク溶射して金属皮膜を形成することを特徴とする三次元造形物の製造方法。   A method for producing a three-dimensional structure, comprising forming a three-dimensional base material by layer-modeling a non-metallic layered material, and forming a metal film by arc spraying zinc on the surface of the base material. 金属皮膜の表面を仕上げ処理することを特徴とする請求項６記載の三次元造形物の製造方法。   The method for producing a three-dimensional structure according to claim 6, wherein the surface of the metal film is finished. 金属皮膜の上面に溶射材料をフレーム溶射してトップコートを形成することを特徴とする請求項６記載の三次元造形物の製造方法。   The method for producing a three-dimensional structure according to claim 6, wherein a top coat is formed by flame spraying a thermal spray material on the upper surface of the metal film. トップコート用の溶射材料をフレーム溶射するに先き立って、金属皮膜の上面にＮi Ａl をフレーム溶射してボンドコートを形成することを特徴とする請求項８記載の三次元造形物の製造方法。   9. The method for producing a three-dimensional structure according to claim 8, wherein prior to flame spraying of the thermal spray material for the top coat, Ni Al is flame sprayed on the upper surface of the metal film to form a bond coat. . 金属皮膜の上面に溶射材料をアーク溶射してトップコートを形成することを特徴とする請求項６記載の三次元造形物の製造方法。   The method for producing a three-dimensional structure according to claim 6, wherein a top coat is formed by arc spraying a thermal spray material on the upper surface of the metal coating. トップコートの表面を仕上げ処理することを特徴とする請求項８ないし請求項１０のいずれか記載の三次元造形物の製造方法。   The method for producing a three-dimensional structure according to any one of claims 8 to 10, wherein a surface of the top coat is subjected to a finishing treatment. 亜鉛をアーク溶射するに先き立って、下地素材の表面をブラスト処理することを特徴とする請求項６ないし請求項１１のいずれか記載の三次元造形物の製造方法。   The method for producing a three-dimensional structure according to any one of claims 6 to 11, wherein the surface of the base material is blasted prior to arc spraying of zinc.
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