WO2014007226A1 - パイプ埋設構造体及びその製造方法 - Google Patents
パイプ埋設構造体及びその製造方法 Download PDFInfo
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- WO2014007226A1 WO2014007226A1 PCT/JP2013/068077 JP2013068077W WO2014007226A1 WO 2014007226 A1 WO2014007226 A1 WO 2014007226A1 JP 2013068077 W JP2013068077 W JP 2013068077W WO 2014007226 A1 WO2014007226 A1 WO 2014007226A1
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- Prior art keywords
- pipe
- base material
- alloy
- metal
- powder
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/12—Elements constructed in the shape of a hollow panel, e.g. with channels
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C24/00—Coating starting from inorganic powder
- C23C24/02—Coating starting from inorganic powder by application of pressure only
- C23C24/04—Impact or kinetic deposition of particles
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/082—Coating starting from inorganic powder by application of heat or pressure and heat without intermediate formation of a liquid in the layer
- C23C24/085—Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
- C23C24/087—Coating with metal alloys or metal elements only
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F7/00—Elements not covered by group F28F1/00, F28F3/00 or F28F5/00
- F28F7/02—Blocks traversed by passages for heat-exchange media
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
- F28D2021/0028—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for cooling heat generating elements, e.g. for cooling electronic components or electric devices
- F28D2021/0029—Heat sinks
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/14—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally
- F28F1/20—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally the means being attachable to the element
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2255/00—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes
- F28F2255/14—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes molded
- F28F2255/146—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes molded overmolded
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2275/00—Fastening; Joining
- F28F2275/02—Fastening; Joining by using bonding materials; by embedding elements in particular materials
Definitions
- the present invention relates to a pipe embedded structure in which a pipe for circulating a temperature control medium such as a cooling gas and cooling water is embedded in a metal member, and a manufacturing method thereof.
- a structure in which a pipe that circulates fluid inside a metal member (hereinafter referred to as a pipe embedded structure) is used for various applications in manufacturing processes of products such as semiconductors, liquid crystal display devices, and optical disks.
- a pipe-embedded structure in which a heat medium (refrigerant) is circulated in a pipe is used as a temperature adjustment device (such as a cold plate) that adjusts (cools or heats) the temperature of the substrate (see, for example, Patent Document 1).
- the pipe embedded structure in which a gas containing a predetermined component is circulated in the flow path may be used as a shower plate that supplies gas to the substrate.
- such a pipe-embedded structure is produced by separately producing a pipe for circulating fluid and a metal member having a recess corresponding to the pipe formed by excavation or the like, and fitting the pipe into the recess of the metal member. It was manufactured by.
- a dense metal film can be deposited around the pipe, so that a structure having excellent thermal conductivity can be produced.
- a local gap may be generated around the pipe, resulting in the metal on the pipe. It is also conceivable that the adhesion of the film is lowered.
- the present invention has been made in view of the above, and an object of the present invention is to provide a pipe embedded structure with improved adhesion between a pipe forming a flow path and a metal member, and a method for manufacturing the same.
- a pipe-embedded structure includes a metal or alloy pipe having a circular outer periphery in cross section, and an inner wall that makes a part of the outer periphery contact each other.
- the ratio h / R to the curvature R of is 0.3 or more and 0.7 or less.
- the pipe embedded structure is characterized in that a clearance between the recess and the pipe is 0 mm or more and 0.05 mm or less in a cross section of the pipe.
- the pipe is made of SUS steel, copper alloy, nickel alloy, tantalum, niobium, titanium, aluminum, or aluminum alloy.
- the base material is made of copper, a copper alloy, aluminum, or an aluminum alloy.
- the powder is made of copper or aluminum.
- the pipe embedded structure manufacturing method has an inner wall that abuts a part of the outer periphery of a metal or alloy pipe having a circular outer periphery in a cross section with respect to a metal or alloy base material.
- h / R is 0.3 or more and 0.7 or less.
- the base material forming step includes a clearance of 0 mm or more and 0.05 mm or less between the recess and the pipe in a cross section of the pipe.
- the concave portion whose ratio h / R between the projecting amount h of the pipe forming the flow path from the base material and the curvature R of the outer periphery of the pipe is 0.3 or more and 0.7 or less is used as the base material. Since the deposited layer is formed on the surface of the pipe and the base material by the so-called cold spray method by fitting the pipe into the concave portion, it is possible to form a dense deposited layer around the pipe protruding from the base material. The adhesion between the pipe and the metal member can be improved.
- FIG. 1 is a cross-sectional view showing the structure of a pipe embedded structure according to an embodiment of the present invention.
- FIG. 2 is a flowchart showing a manufacturing method of the pipe embedded structure shown in FIG.
- FIG. 3A is a schematic diagram for explaining step S1 shown in FIG.
- FIG. 3B is a schematic diagram for explaining step S2 shown in FIG.
- FIG. 3C is a schematic diagram for explaining step S3 shown in FIG.
- FIG. 4 is a schematic diagram showing an outline of the cold spray apparatus.
- FIG. 5 is an SEM image showing the deposited layer in Example 1.
- FIG. 6 is an SEM image showing the deposited layer in Example 2.
- FIG. 7A is an SEM image showing the deposited layer in Comparative Example 1.
- FIG. 7B is a schematic diagram illustrating a positional relationship between the pipe and the base material in Comparative Example 1.
- 8A is an SEM image showing the deposited layer in Comparative Example 2.
- FIG. 8B is a schematic diagram illustrating a positional relationship between the pipe and the base material in Comparative Example 2.
- FIG. 9 is an optical photograph showing the deposited layer in Example 3.
- FIG. 10 is an optical photograph showing the deposited layer in Example 4.
- FIG. 11 is an optical photograph showing the deposited layer in Comparative Example 3.
- FIG. 1 is a cross-sectional view showing the structure of a pipe embedded structure according to an embodiment of the present invention.
- a pipe embedded structure 1 according to the present embodiment is formed with a metal or alloy pipe 10 having a circular outer periphery in a cross section, and a recess 11 a into which the pipe 10 is fitted.
- a base 11 made of metal or alloy, and a pipe 10 and a deposited layer 12 of metal or alloy formed on the base 11 are provided.
- Such a pipe-embedded structure 1 is used as a temperature control device (for example, a cold plate), a fluid supply device (for example, a shower plate), or the like by circulating a desired fluid (liquid or gas) through the pipe 10.
- the pipe 10 is a pipe having an outer diameter of ⁇ , an outer peripheral curvature of R, and a circular cross section.
- the thickness of the pipe 10 is appropriately determined according to the material and application.
- the shape of the pipe 10 in the length direction is not particularly limited, and the planar shape of the pipe 10 viewed from above the pipe embedded structure 1 can be various shapes such as a straight shape, a spiral shape, and a meander shape. can do.
- the material of the pipe 10 is selected according to the fluid to be circulated in the pipe 10 and the use of the pipe embedded structure 1.
- a corrosion-resistant metal or alloy such as SUS steel, copper alloy, nickel alloy, tantalum, niobium, or titanium is used.
- a material having good thermal conductivity such as SUS steel is used.
- PCW process cooling water
- an organic solvent, an inert gas or the like is circulated, corrosion resistance is not essential, and aluminum or aluminum alloy having excellent thermal conductivity can be used.
- the base material 11 is a bulk material formed of a metal or alloy having good thermal conductivity, such as copper, copper alloy, aluminum, or aluminum alloy.
- the concave portion 11a is formed by excavating the upper surface 11b of the base material 11 into a groove shape. Note that the planar shape of the upper surface 11 b of the recess 11 a corresponds to the planar shape of the pipe 10.
- the recess 11a has an inner wall with which a part of the outer periphery of the pipe 10 comes into contact.
- the cross-sectional shape of the inner wall of the recess 11 a is an arc shape along the outer periphery of the pipe 10.
- the depth d of the recess 11a is such that the ratio h / R of the height h (hereinafter referred to as the protruding amount) h at which the pipe 10 protrudes from the upper surface 11b and the curvature R of the outer periphery of the pipe 10 is 0.3 or more and 0.7 or less. It is prescribed to be.
- the width of the concave portion 11a is a maximum value w (w ⁇ ) at the height corresponding to the curvature R when the deepest portion of the concave portion 11a is used as a reference, and the upper portion is opened while maintaining the maximum value w from there. ing. Further, the clearance w ⁇ between the recess 11a and the pipe 10 is in the range of 0 mm to 0.05 mm.
- the deposited layer 12 is formed by a so-called cold spray method.
- the cold spray method is a method of accelerating a powder made of a metal or an alloy together with a gas and spraying the powder on the surface of the base (in this embodiment, the pipe 10 and the base 11) in a solid state to deposit the powder.
- This is a film forming method.
- the deposited layer 12 formed by the cold spray method has high thermal conductivity because there is no phase transformation and oxidation is suppressed.
- a plastic deformation occurs between the powder and the substrate, and an anchor effect is obtained.
- each oxide film is destroyed and metal bonds are formed by new surfaces. Therefore, the adhesion strength with the substrate is increased, and a film with reduced thermal resistance can be formed.
- the deposited layer 12 is formed of a metal or alloy having good thermal conductivity, such as copper or aluminum.
- FIG. 2 is a flowchart showing a method for manufacturing the pipe embedded structure 1.
- 3A to 3C are schematic views for explaining a method for manufacturing the pipe embedded structure 1.
- FIG. 2 is a flowchart showing a method for manufacturing the pipe embedded structure 1.
- step S1 as shown in FIG. 3A, a groove-like recess 11a is formed on the surface of a metal or alloy bulk material 13 by excavation to produce a substrate 11.
- a deposited layer 12 is formed on the surfaces of the pipe 10 and the base material 11 by a cold spray method.
- FIG. 4 is a schematic diagram showing an outline of the cold spray apparatus used in step S3.
- the cold spray device 20 accommodates a gas heater 21 that heats compressed gas and a powder 28 (hereinafter also simply referred to as powder) of the material of the deposition layer 12, and supplies it to the spray gun 23.
- the cold spray device 20 accommodates a gas heater 21 that heats compressed gas and a powder 28 (hereinafter also simply referred to as powder) of the material of the deposition layer 12, and supplies it to the spray gun 23.
- the powder supply device 22, the gas nozzle 24 that injects the heated compressed gas and the powder 28 supplied thereto onto the base 27, and the valve 25 that adjusts the supply amount of the compressed gas to the gas heater 21 and the powder supply device 22.
- the valve 25 that adjusts the supply amount of the compressed
- the compressed gas helium, nitrogen, air or the like is used.
- the compressed gas supplied to the gas heater 21 is, for example, 50 ° C. or higher, heated to a temperature in a range lower than the melting point of the powder 28, and then supplied to the spray gun 23.
- the heating temperature of the compressed gas is preferably 300 to 900 ° C.
- the compressed gas supplied to the powder supply device 22 supplies the powder 28 in the powder supply device 22 to the spray gun 23 so that a predetermined discharge amount is obtained.
- the heated compressed gas is made a supersonic flow (about 340 m / s or more) by the gas nozzle 24 having a divergent shape.
- the gas pressure of the compressed gas is preferably about 1 to 5 MPa. This is because the adhesion strength of the powder (film) to the substrate 27 can be improved by adjusting the pressure of the compressed gas to this level. More preferably, the treatment is performed at a pressure of about 2 to 4 MPa.
- the powder 28 supplied to the spray gun 23 is accelerated by charging the compressed gas into the supersonic flow, and collides with the substrate 27 at a high speed and deposits in the solid state. Note that the apparatus is not limited to the cold spray apparatus 20 shown in FIG. 4 as long as the apparatus can form a film by colliding with the base body 27 in a solid state.
- the base material 11 in which the pipe 10 is fitted in the recess 11 a is disposed as the base body 27, and a film is formed on the surfaces of the pipe 10 and the base material 11.
- the powder 28 also enters the region 14 between the upper end of the recess 11a and the pipe 10 to form a film.
- the pipe buried structure 1 shown in FIG. 1 is completed by forming the deposited layer 12 to a desired thickness.
- the deposited layer 12 since a part of the pipe 10 is raised above the upper surface 11 b of the base material, the deposited layer 12 also has a shape raised above the pipe 10. For this reason, after forming the deposited layer 12 to be thick, it is preferable to remove unnecessary portions by cutting or the like to flatten the surface.
- the relationship between the cross section of the pipe 10 and the recess 11a provided in the base material 11 will be described.
- a coating film is formed by causing powder 28 injected in one direction from a gas nozzle 24 to collide with a base 27. For this reason, a film cannot be formed in a portion that is shaded with respect to the injection direction of the powder 28.
- the inventors of the present application provide the recess 11a that satisfies the following conditions (1) and (2). It has been found that by providing the base material 11, it is possible to form a dense and homogeneous deposited layer 12 in close contact with the pipe 10 and the base material 11. (1) The ratio h / R between the protrusion amount h from which the pipe 10 protrudes from the surface of the base material 11 and the curvature R of the outer periphery of the pipe 10 is 0.3 or more and 0.7 or less. (2) The clearance ⁇ between the recess 11a and the pipe 10 is set to 0 mm or more and 0.05 mm or less.
- the concave portion defined by the above-described conditions is formed on the base material, the pipe is fitted into the concave portion, and the deposited layer is formed by the cold spray method, thereby closely contacting the pipe and the base material. It is possible to form a dense and uniform deposited layer around the pipe. Therefore, when the pipe embedded structure with improved adhesion is used as a temperature control device or a shower plate, it is possible to improve temperature control efficiency due to good thermal conductivity and heat uniformity. . In this case, it is preferable to use the deposition layer 12 side as a heat conduction surface.
- FIGS. 7B and 8B are schematic diagrams illustrating the positional relationship between the pipe 10 and the base material 11 in Comparative Examples 1 and 2.
- FIGS. 7B and 8B are schematic diagrams illustrating the positional relationship between the pipe 10 and the base material 11 in Comparative Examples 1 and 2.
- Example 1 The ratio h / R was 0.67. As a result, as shown in FIG. 5, a dense and uniform deposited layer 12 having a sufficient thickness could be formed also on the side of the pipe 10.
- Example 2 The ratio h / R was 0.33. As a result, as shown in FIG. 6, a dense and uniform deposited layer 12 having a sufficient thickness could be formed also on the side of the pipe 10.
- the side end portion of the pipe 10 protruding from the upper surface 11b of the base material 11 is substantially parallel to the powder injection direction, and the powder can adhere to this portion. There wasn't. Therefore, as shown in FIG. 7A, the deposited layer 12 cannot be formed on the side of the pipe 10, and the deposited layer 12 formed on the pipe 10 and the deposited layer 12 formed on the base material 11 There was a crack in between.
- 9 to 11 are optical photographs showing the deposited layer 12 when the clearance ⁇ between the recess 11a and the pipe 10 is changed. These optical photographs show that after the deposition layer 12 is sufficiently formed on the pipe 10 (to a height exceeding 1 mm from the upper end surface of the pipe 10), the deposition layer 12 is milled to 1 mm from the upper end surface of the pipe 10. An image of the polished surface cut by height and further polished is taken from the upper surface side.
- Example 3 The clearance ⁇ was set to 0 mm. As a result, as shown in FIG. 9, it was possible to form a dense and uniform deposited layer 12 smoothly and continuously in the region on the pipe 10 and the region on the substrate 11.
- Example 4 The clearance ⁇ was set to 0.05 mm. As a result, as shown in FIG. 10, although a boundary line of the surface is observed between the region on the pipe 10 and the region on the base material 11, a dense and uniform deposited layer 12 that is continuous between both regions is formed. could be formed.
- Pipe embedding structure 10 Pipe 11 Base material 11a Recessed part 11b Upper surface 12 Deposited layer 13 Bulk material 14 Area
Abstract
Description
図1は、本発明の実施の形態に係るパイプ埋設構造体の構造を示す断面図である。図1に示すように、本実施の形態に係るパイプ埋設構造体1は、横断面における外周が円形をなす金属又は合金製のパイプ10と、該パイプ10を嵌合させる凹部11aが形成された金属又は合金製の基材11と、パイプ10及び基材11上に形成された金属又は合金の堆積層12とを備える。このようなパイプ埋設構造体1は、パイプ10内に所望の流体(液体又は気体)を流通させて、温度調節装置(例えばコールドプレート)や流体供給装置(例えばシャワープレート)等として用いられる。
コールドスプレー法においては、一般に、ガスノズル24から一方向に向けて噴射した粉末28を基体27に衝突させることにより皮膜を形成する。このため、粉末28の噴射方向に対して影になる部分には皮膜を形成することができない。また、粉末28の噴射方向に対して皮膜の形成面が平行に近づくほど、皮膜の形成が困難になる。そこで、本願発明者らは、コールドスプレー法により堆積層12を形成する際に、パイプ10の側方、即ち、基材11との境界近傍にも緻密で均質な堆積層12を形成するための条件を求めるべく、鋭意実験を重ねた。
(1)基材11の表面からパイプ10が突出する突出量hとパイプ10の外周の曲率Rとの比率h/Rを、0.3以上0.7以下とする。
(2)凹部11aとパイプ10とのクリアランスΔを、0mm以上0.05mm以下とする。
まず、実施例1、2及び比較例1、2を説明する。図5、図6、図7A、図8Aは、比率h/Rを変化させて堆積層12を形成した場合のパイプ10、基材11、及び堆積層12を、パイプ10の横断面と直交する方向から撮像したSEM画像である。なお、図5、図6、図7A、図8Aにおいては、基材11の側面と上面との境界を一点鎖線で示している。また、パイプ10の外径の一部を破線で補足している。図7B、図8Bは、比較例1及び2におけるパイプ10と基材11との位置関係を示す模式図である。
基材:40mm×40mm、厚さ10mmの銅合金板
パイプ:外径φ=6mm、外周の曲率R=3mmの銅合金
堆積層の材料:平均粒径26.18μmの銅粉末
基材に設けた凹部とパイプとのクリアランス:Δ=0mm
比率h/Rを0.67とした。その結果、図5に示すように、パイプ10の側方にも十分な厚さの緻密で均質な堆積層12を形成することができた。
比率h/Rを0.33とした。その結果、図6に示すように、パイプ10の側方にも十分な厚さの緻密で均質な堆積層12を形成することができた。
比率h/Rを1(突出量h=曲率R)、即ち、基材11に対し、パイプ10の外径φの半分に相当する深さの凹部11aを形成し、パイプ10のちょうど半分を凹部11a内に収納した。この場合、図7Bに示すように、基材11の上面11bから突出するパイプ10の側方の端部は、粉末の噴射方向に対してほぼ平行となり、この部分に粉末を付着させることができなかった。そのため、図7Aに示すように、パイプ10の側方に堆積層12を形成することができず、パイプ10上に形成された堆積層12と基材11上に形成された堆積層12との間に割れが生じてしまった。
比率h/Rを0(突出量h=0)、即ち、基材11に対し、パイプ10の外径φに相当する深さの凹部11aを形成し、パイプ10全体を凹部11a内に収納した。この場合、図8Bに示すように、凹部11aの内壁とパイプ10との間に深い隙間が生じ、粉末を十分に充填することができなかった。そのため、図8Aに示すように、パイプ10の側方に十分な堆積層12を形成することができず、パイプ10上に形成された堆積層12と基材11上に形成された堆積層12との間に割れが生じてしまった。
基材:40mm×40mm、厚さ10mmの銅合金板
パイプ:外径φ=6mm、外周の曲率R=3mmの銅合金
堆積層の材料:平均粒径26.18μmの銅粉末
比率h/R=0.5
クリアランスΔを0mmとした。その結果、図9に示すように、パイプ10上の領域と基材11上の領域とで滑らかに連続する緻密で均質な堆積層12を形成することができた。
クリアランスΔを0.05mmとした。その結果、図10に示すように、パイプ10上の領域と基材11上の領域との間に面の境界線は観察されるものの、両領域間で連続する緻密で均質な堆積層12を形成することができた。
クリアランスΔを0.10mmとした。この場合、図11に示すように、パイプ10上の領域と基材11上の間に割れが観察された。
10 パイプ
11 基材
11a 凹部
11b 上面
12 堆積層
13 バルク材
14 領域
20 コールドスプレー装置
21 ガス加熱器
22 粉末供給装置
23 スプレーガン
24 ガスノズル
25、26 バルブ
27 基体
28 粉末
Claims (7)
- 横断面における外周が円形をなす金属又は合金製のパイプと、
前記外周の一部を当接させる内壁を有し、前記パイプを嵌合させる凹部が形成された金属又は合金製の基材と、
前記凹部に前記パイプを嵌合させた状態で、金属又は合金からなる粉末をガスと共に加速し、前記パイプ及び前記基材の表面に固相状態のままで吹き付けて前記粉末を堆積させることにより形成された堆積層と、
を備え、
前記基材の表面から前記パイプが突出する突出量hと前記外周の曲率Rとの比率h/Rが0.3以上0.7以下であることを特徴とするパイプ埋設構造体。 - 前記パイプの横断面において、前記凹部と前記パイプとのクリアランスが0mm以上0.05mm以下であることを特徴とする請求項1に記載のパイプ埋設構造体。
- 前記パイプは、SUS鋼、銅合金、ニッケル合金、タンタル、ニオブ、チタン、アルミニウム、又はアルミニウム合金からなることを特徴とする請求項1又は2に記載のパイプ埋設構造体。
- 前記基材は、銅、銅合金、アルミニウム、又はアルミニウム合金からなることを特徴とする請求項1~3のいずれか1項に記載のパイプ埋設構造体。
- 前記粉末は、銅又はアルミニウムからなることを特徴とする請求項4に記載のパイプ埋設構造体。
- 金属又は合金製の基材に対し、横断面における外周が円形をなす金属又は合金製のパイプの前記外周の一部を当接させる内壁を有する凹部を形成する基材形成工程と、
前記凹部に前記パイプを嵌合させ、金属又は合金からなる粉末をガスと共に加速し、前記パイプ及び前記基材の表面に固相状態のままで吹き付けて前記粉末を堆積させることにより堆積層を形成する堆積層形成工程と、
を含み、
前記基材形成工程は、前記基材の表面から前記パイプが突出する突出量hと前記外周の曲率Rとの比率h/Rを0.3以上0.7以下にすることを特徴とするパイプ埋設構造体の製造方法。 - 前記基材形成工程は、前記パイプの横断面における前記凹部の幅と前記パイプの外径とのクリアランスを0mm以上0.05mm以下にすることを特徴とする請求項6に記載のパイプ埋設構造体の製造方法。
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KR20147036856A KR20150015533A (ko) | 2012-07-03 | 2013-07-01 | 파이프 매설 구조체 및 그 제조 방법 |
CN201380033889.7A CN104395501A (zh) | 2012-07-03 | 2013-07-01 | 管埋设构造体及其制造方法 |
EP13813481.2A EP2871262A4 (en) | 2012-07-03 | 2013-07-01 | STRUCTURE WITH EMBEDDED TUBE AND MANUFACTURING METHOD THEREFOR |
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JP6437365B2 (ja) * | 2015-03-30 | 2018-12-12 | タツタ電線株式会社 | 固定方法、被覆導線固定構造 |
EP3381874A1 (en) * | 2017-03-31 | 2018-10-03 | Arkema B.V. | Feeding device for coating apparatus, coating apparatus comprising it and process using it |
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US20150198387A1 (en) | 2015-07-16 |
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