JP3014627B2 - Manufacturing method of cooling wall made of dissimilar metal - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a cooling wall provided around a high-temperature heating element such as plasma in a fusion reactor, and comprises a hot isostatic pressurizing (hereinafter, referred to as a hot isostatic pressing). In the specification of the present application, it may be referred to as HIP.) Even when the cooling wall is made of a plurality of dissimilar metals, a sound joint can be obtained and the secondary processing can be performed easily and in a short time. It relates to a method that makes it possible to do so. Hot isostatic pressing (HIP)
The applicant of the present invention filed an application first and disclosed Japanese Patent Application Laid-Open No. 3-218497.
As described in the publication, a temperature of about 1000 to 2000
° C., a pressure of about 1000~2000kgf / cm ² of high temperature and high
In a pressure environment, a method of joining metal members
is there.

[0002]

2. Description of the Related Art FIG. 12 is a view showing an example of the prior art of a method for manufacturing a cooling wall disposed around a high-temperature heating element. -218497
FIG. 1 is a view for explaining a basic configuration of a method for manufacturing a first wall of a fusion reactor described in Japanese Patent Application Laid-Open Publication No. H10-209,873. In FIG. 12, reference numeral 51 denotes a through hole, 52 denotes a hollow tube, 53, 53 ', 54, and 54' denote sealing plate members, and 55 denotes a metal foil.

[0003] Initially, as a method of manufacturing the first wall of the fusion reactor, a hollow tube having a rectangular cross section is arranged in one direction by contacting the side surfaces thereof to form a tube group. After disposing a plate-shaped sealing material on both side surfaces and disposing a plate-shaped sealing material having a window on both axial end surfaces of the tube group, welding between the sealing materials by an electron beam or the like,
After the space formed by each seal material and the tube group is vacuumed by gas suction, the gas suction portion is hermetically sealed with a weld bead.

[0004] Then the entire said member by HIP treatment, by joining the hollow tube and between the hollow tube and the sealing material a rectangular cross section metallurgically, nuclear fusion reactor first with a plurality of square cross section of the through hole A wall was formed.

However, when the HIP process is performed, the deformation state differs at the corners of the hollow tube or at the joints of members having different thicknesses due to the difference in the rigidity of the plates with respect to the hydrostatic pressure. For this reason, there was a problem that it was difficult to form a joint having sufficient strength.

The prior art has been proposed in order to solve the disadvantages of such an initial manufacturing method, and the method comprises the steps of forming each hollow tube having a rectangular cross section and each seal .
Upon joining the plate-like member, juxtaposed After winding the metal foil in advance in the hollow tube, the gap between or between the hollow tube and the sealing plate member between the hollow tube and the gas suction HIP processing is performed in a state where the vacuum is maintained by airtight seal welding.

[OO07] This enables high-precision and high-strength joining when joining members having different rigidities, such as contact portions of members having different plate thicknesses or corners of hollow tubes having a rectangular cross section, by HIP processing. It was made.

[0008]

[Problems to be solved by the invention]
As the development progresses, the heat flux (heat load) received by the first wall is gradually increasing as compared with the conventional one, and the energy of the particles flying from the plasma on the first wall also increases. The required thickness of the plates that make up the wall is also increasing.

When the material of the plate material of the first wall is stainless steel, if the incident energy is large, the temperature difference between both surfaces of the plate material becomes large due to the small thermal conductivity of stainless steel, and the plate is broken. There is a fear. Therefore, in order to prevent breakage of the plate material, it is necessary to use a metal such as copper having high thermal conductivity as the material of the plate.

However, if copper is used as the plate material of the first wall, it is soft and easily deformed under the conditions of the temperature and pressure of the HIP treatment, although the heat conductivity is high. Some issues remain, as shown in the following. That is, by relatively soft material of the metal in the portion between the adjacent individual hollow tubes rectangular cross section flows, soundness of the joint between the hollow tube, and thus the overall health of the first wall is impaired fear There is that.

This will be described with reference to FIGS. 3 and 4. First, as shown in FIG. 3, the temperature of the HIP treatment and the temperature of the
Fine pressure conditions of the original by the thermal conductivity high and deformation is liable metal plate 22, for example, using copper, the first wall with a metallic plate 23, 24, 25 of stainless steel or the like to the other three sides The hermetic seal portion 26 in which the respective plate members are in contact with each other is sealed by welding or the like, and the space formed by each of the plate members 22, 23, 24, 25 and the hollow tube 21 is subjected to gas suction to thereby form a vacuum gap 27. Is formed.

In this state, when the semiconductor device is carried into the HIP device and subjected to high-temperature and high-pressure HIP processing, the metal plate material 23 on the side facing the metal plate material 22 which is easily deformed via the hollow tube 21.
Is usually made of the same material as the hollow tube 21, and its thickness is sufficiently thicker than the hollow tube 21, so that the metal plate 23 does not deform faster than the hollow tube 21.

[0013] Thus the hollow tube 21 begins to deform before the metal plate 23 is deformed with increasing temperature of the HIP, as shown in the lower half of definitive 4, deformed almost completely rectangular In this state, it is pressed against the metal plate 23.

However, on the side where the metal plate material 22 which is easily deformed under the HIP processing conditions is provided, for example, the hollow tube 21 is manufactured in a square shape with high accuracy, and the outer wall is accurately brought into close contact with the hollow tube 21. Even if installed, HIP processing
Metal plate 2 easily deformed under temperature and pressure conditions
2 is deformed before the hollow tube 21 is deformed, and each hollow tube 21 is deformed.
Penetrate into the small gaps between them by high pressure.

For this reason, the hollow tubes 2 are provided in the gaps between the hollow tubes 21.
A plate 22 made of a metal different from 1 is interposed,
Since the sound joining of the hollow tubes 21 is not performed, the strength of the portion may be reduced and the soundness of the entire first wall may be impaired.

Further, the hollow tubes 21 are provided in the gaps between the hollow tubes 21.
Is put in FIG. 4 the shape of a hollow tube 21 different metals invade the
That on the case of sufficiently square, as shown in the upper half is not formed, leading to a problem that also decreases compared to the cooling effect in the case of complete square.

In particular, in the case of the first wall of a fusion reactor, the outer surface thereof is required to have high precision smoothness for various reasons.
It is necessary to finish the secondary by machining the surface of the cooling wall joined by the IP process, but in Fig. 4
When the amount of deformation is large as shown in the upper half, the time required for the secondary processing is long, and the cost is also large.

[0018]

SUMMARY OF THE INVENTION The present invention has been made in view of such a situation, and has a medium like a first wall of a fusion reactor.
Different types of hollow tube and metal plate surrounding the hollow tube
When need to manufacture, using those has occurred, is held high integrity and good thermal conductivity by a simple configuration,
Or capable Rukoto reduce the time and expense required for the secondary processing such as mechanical finishing a highly smooth surface,
It is an object of the present invention to provide a method for manufacturing a cooling wall made of a dissimilar metal .

The above object is achieved by a method for manufacturing a cooling wall made of a dissimilar metal according to the present invention. That is, (1) a cooling wall formed by joining a pipe group formed by arranging a plurality of pipes in parallel and a metal plate material disposed so as to surround the pipe group by hot isostatic pressing. in the fabrication method of the body, at least one surface of the metal plate which is disposed to surround the tube bundle, a higher thermal conductivity than the tube under the conditions of temperature and pressure of the hot isostatic pressure treatment It is made of a plate material made of a metal that is easily deformed, and is made of the above-mentioned tube group and a metal that has a higher thermal conductivity and is more easily deformed than the above-mentioned tube under the conditions of temperature and pressure of the hot isostatic pressing process. Between the plate material,
Under the conditions of temperature and pressure of the hot isostatic pressing process, a plate made of a metal which is at least the same as or hardly deformed than the above-mentioned tube is inserted and manufactured by the hot isostatic pressing process. A method for manufacturing a cooling wall made of dissimilar metals.

(2) Nuclear fusion formed by joining a tube group formed by arranging a plurality of tubes in parallel and a metal plate material arranged so as to surround the tube group by hot isostatic pressing. in the fabrication method for cooling the wall body used as the furnace first wall, at least one surface of the metal plate which is disposed to surround the tube bundle, under conditions of temperature and pressure of the hot isostatic pressure treatment constituted by a plate material made of a metal which easily and deformed higher thermal conductivity than the tube, and the tube bank, the temperature of the hot isostatic pressure treatment Oyo
During under the conditions of the fine pressure between plate made of metal which easily and <br/> deformed higher thermal conductivity than the tube, under the conditions of temperature and pressure of the hot isostatic pressure treatment And a method of manufacturing a cooling wall made of a dissimilar metal, which is manufactured by hot isostatic pressing by inserting a plate made of a metal that is at least the same as or harder to deform than the pipe.

(3) The plurality of tubes are tubes having a rectangular cross section (1)
A method for producing a cooling wall made of a dissimilar metal according to any one of (1) to (2).

(4) The plurality of tubes are tubes having a circular cross section (1)
A method for producing a cooling wall made of a dissimilar metal according to any one of (1) to (2).

(5) Temperature and pressure of hot isostatic pressing
Heterogeneous at least the tube consists of the same or a difficult to deform metal than the tube and the plate material under the conditions, a plate member having a flat surface (1) according to any one of - (4) A method of manufacturing a cooling wall made of metal.

(6) Temperature and pressure of hot isostatic pressing
At least the tube consists of the same or a difficult to deform metal than the tube and the plate material under the conditions, it is obtained by forming the cross-sectional shape of any of the tube after hot isostatic pressing treatment (1) - (4) A method for manufacturing a cooling wall made of a dissimilar metal according to any one of (4) and (4).

(7) Temperature and pressure of hot isostatic pressing
Method of fabricating conditions are liable metal copper high and deformed thermal conductivity than under tube (1) to (6) 6 cooling wall made of dissimilar metals according to any one of It is.

[0026]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIGS. 1 and 2 show a first embodiment of a method for manufacturing a cooling wall made of dissimilar metal according to the present invention. In a cooling wall such as a first wall of a fusion reactor having a configuration in which a tube group and a metal plate material disposed so as to surround the tube group are joined by HIP processing, the side facing the plasma is disposed on the side facing the plasma. is a cross-sectional view illustrating a manufacturing method of using HIP treatment temperature and pressure conditions likely materials high and deformed thermal conductivity than under the hollow tube, for example, a plate material made of metal such as copper .

1 and 2, 1 is a metallic liner,
2 is a hollow tube, 3 is a through-hole, 4 is a plate made of easily deformable metal, 5, 6, and 7 are metal plates, 8 is an airtight seal, 9
Is a vacuum gap and 10 is isotropic pressure.

First, in FIG. 1, a plurality of hollow tubes 2 having a substantially rectangular cross section are arranged in one direction with their side surfaces in contact with each other to form a tube group. Next, it is arranged surrounding the tube group.
Among the metal plate, on the side of providing the metal plate 4 made of easy material to deform than the hollow tube 2 under the conditions of temperature and pressure of the HIP process, the temperature and pressure of the strip of HIP treatment <br / > A metal liner 1 having a strength that is hardly deformed at least as much as or more than the hollow tube 2 is provided.

Next, the above-mentioned metal liner-1
A metal plate 4 having a higher thermal conductivity than the hollow tube and being easily deformed is provided, and a metal plate 5 made of the same material as the hollow tube 2 is usually provided on the other three sides of the hollow tube 2. , 6,7 are arranged. Although not shown in FIG. 1, the hollow tube 2 has windows at both ends in the axial direction for securing the through holes 3, and a plate made of the same material as the metal plates 5, 6, 7 is used. Arrange.

Next, the hermetic seal portion 8 in which the metal plate members come into contact with each other and the through hole 3 of the hollow tube 2 of the plate material having the above-mentioned window portion are welded by an electron beam or the like to form a metal liner.
1, each metal plate material 4, 5, 6, 7, the outer surface of each hollow tube 2,
The space (gap) formed between the hollow tube 2 and the plate material having the windows disposed at both ends in the axial direction is evacuated to a vacuum state, and the gas suction portion is hermetically sealed with a weld bead. This forms a vacuum gap 9.

The structure of the first wall holding this state is referred to as HI
It is carried into the P device and processed under the same conditions as normal HIP. As the temperature is increased in the HIP device, and as shown in FIG. Although prone metal plate 4 is pressed against the hollow tube 2 side becomes easy state deformed by softening, usually at least between the hollow tube 2
Since the metal liner -1 made of the same material as the hollow tube 2 in terms of strength is provided, the metal liner -1 has a smooth shape without being affected by the shape of the hollow tube 2. It is crimped.

As the pressure and temperature of the HIP are further increased, the hollow tube 2 having the same thickness as the metal plates 5, 6, and 7 starts to deform, and the metal tube surrounding the side surface starts to deform. The liner 1 is pressed against the metal plates 5, 6, 7 and deforms into a substantially perfect square shape. Finally, the metal liner 1, the hollow tube 2, the easily deformable metal plate 4, and the metal plates 5, 6 are formed. 7 and a plate member disposed at both ends in the axial direction of the hollow tube 2 (not shown) are integrally and metallurgically firmly joined together to produce a first wall having a completely rectangular through hole 3 as shown in FIG. Is done.

FIGS. 5 to 6 are views showing a second embodiment of the method of manufacturing a cooling wall made of dissimilar metal according to the present invention. In this embodiment, a hollow pipe 2 having a circular cross section is used as the hollow pipes 2 arranged side by side in contact with the respective side faces.
FIG. 3 shows a case where a cooling wall such as a first wall of a fusion reactor having a substantially perfect rectangular through-hole 3 is manufactured by performing IP processing. FIG. 3 is a cross-sectional view of the cooling wall before HIP processing. FIG. 4 is a sectional view of the cooling wall after the HIP processing.
According to the present invention, as shown in the embodiment, HIP
Even when the cross section of the hollow tube 2 arranged before the treatment is circular, a sound cooling wall can be obtained as in the case of the hollow tube in the first embodiment having a rectangular cross section. It is possible.

FIGS. 7 to 11 are views for explaining a third embodiment of a method for manufacturing a cooling wall made of dissimilar metal according to the present invention. In the first and second embodiments, FIGS. Shape of metallic liner-1 (a plate made of a metal which is the same as or less deformable than a tube) disposed between the plate and a plate made of a metal having a higher thermal conductivity than a tube and easily deformed FIG. 4 is a partial cross-sectional view showing a concept in a case where the pipe is formed into an arbitrary shape in which the pipe is to be deformed by the HIP process.

FIG. 7 shows an example in which a hollow tube 2 having a circular cross section is used and H
It is sectional drawing which shows the shape of the cooling wall body calculated | required in the case where the shape after the IP process is a metal plate material 5 side circular and the easily deformable metal plate material 4 side has a rectangular cooling flow path.

Now, as shown in FIG. 8, a depression having a shape corresponding to the metallic plate 5 in FIG. 7 is formed on the metallic plate 5 and the deformable metal plate 4 in FIG. It is assumed that a hollow corresponding to the metal plate member 4 is formed, the hollow tube 2 having a circular cross section is provided, and HIP joining is performed after hermetic sealing.

In this case, the cross section of the cooling flow path of the hollow tube 2 is changed as shown in FIG. 9 due to the difference in the deformability of each of the metal plate 5, the easily deformable metal plate 4 and the hollow tube 2. The undulation 45 is generated on the outer surface of the metal plate 4 which is easily deformed and deformed, and the hollow tube 2 is easily deformed.
A space 46 is formed between them, and the hollow tube 2 itself deforms, making it impossible to obtain a predetermined shape.

In order to cope with this, in the present invention, as shown in FIG. 10, a metal plate material 4 which is the same as the pipe or harder to deform than the pipe and has high rigidity is formed on the easily deformable metal plate material 4 side. A metal liner-1 having a shape corresponding to the shape described below is manufactured, inserted between the hollow tube 2 and the easily deformable metal plate material 4, and subjected to HIP processing after hermetic sealing.

This makes it possible to manufacture a sound cooling wall such as the first wall of a fusion reactor having a flow path of a predetermined shape as shown in FIG.

[0040]

As described above, according to the present invention, the following effects can be obtained as described in the above embodiment. When disposing a dissimilar metal selected according to its purpose on a part of the wall surface of the cooling wall, the dissimilar metal is subjected to the HIP treatment temperature and the like.
Even if it has the property of being deformed more easily than the other metals that make up the wall under the conditions of pressure and pressure, it must accurately form the prescribed shape and affect the joints of other members without, by respectively perform complete joining, accuracy and reliable, yet good cooling effect different
It is possible to obtain a cooling wall made of a seed metal .

Since a member made of a material which is easily deformed under the conditions of the temperature and pressure of the HIP process can be accurately formed into a predetermined shape, the number of finishing steps by machining is reduced, and the manufacturing cost is reduced. And the time period can be shortened.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a cooling wall made of a dissimilar metal according to a first embodiment of the present invention before a HIP process.

FIG. 2 is a cross-sectional view of a cooling wall made of a dissimilar metal according to the present invention after HIP processing in the first embodiment.

FIG. 3 is a cross-sectional view of a cooling wall made of a dissimilar metal before HIP processing in the related art.

FIG. 4 is a cross-sectional view of a cooling wall made of a dissimilar metal in the related art after HIP processing.

FIG. 5 is a cross-sectional view of a cooling wall made of a dissimilar metal according to a second embodiment of the present invention before HIP processing.

FIG. 6 is a cross-sectional view of a cooling wall made of a dissimilar metal according to the present invention after HIP processing in a second embodiment.

FIG. 7 is a cross-sectional view showing a shape of a desired cooling wall in a third embodiment of a cooling wall made of a dissimilar metal according to the present invention.

FIG. 8 is a cross-sectional view before a HIP process in a conventional technique for explaining a third embodiment of a cooling wall made of a dissimilar metal according to the present invention.

FIG. 9 is a cross-sectional view after a HIP process according to a conventional technique for explaining a third embodiment of a cooling wall made of a dissimilar metal according to the present invention.

FIG. 10 is a cross-sectional view of a cooling wall made of a dissimilar metal according to a third embodiment of the present invention before HIP processing.

FIG. 11 is a cross-sectional view of a cooling wall made of a dissimilar metal according to the present invention after HIP processing in a third embodiment.

FIG. 12 is a cross-sectional view of a cooling wall according to a conventional technique before HIP processing.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 metal liner 2 hollow tube 3 through hole 4 easily deformable metal plate 5, 6, 7 metal plate 8 airtight seal 9 vacuum gap 10 isotropic equal pressure 21 hollow tube 22 easily deformable metal plate 23, 24, 25 Metal plate material 26 Hermetic seal part 27 Vacuum gap 28 Depression due to deformation 45 Surface undulation 46 Space 51 Through hole 52 Hollow tube 53, 53 ', 54, 54' Plate member for sealing 55 Metal foil

Continued on the front page (72) Inventor Kazuyuki Furuya 801-1 Mukaiyama, Naka-machi, Naka-gun, Ibaraki Pref. Japan Atomic Energy Research Institute Naka Research Institute (72) Inventor Toshiyuki Hashimoto 118 Notsuka, Noda City, Chiba Prefecture Kawasaki Heavy Industries Noda Factory (72) Inventor Shinichi Sato 2-6-5 Minamisuna, Koto-ku, Tokyo Kawasaki Heavy Industries, Ltd. Tokyo Design Office (72) Inventor Toshio Osaki 2-6-5 Minamisuna, Koto-ku, Tokyo Kawasaki Heavy Industries, Ltd. Inside the office (72) Inventor Satoshi Kuroda 801-1 Mukayama, Naka-machi, Naka-gun, Ibaraki Pref. Inside the Japan Atomic Energy Research Institute Naka Research Laboratory (72) Inventor Ichiro Kawaguchi 2-6-5 Minamisuna, Koto-ku, Tokyo Kawasaki Heavy Industries, Ltd. Tokyo In the design office (72) Inventor Takeshi Yamada 3-1-1, Higashi-Kawasaki-cho, Chuo-ku, Kobe Kawasaki Heavy Industries, Ltd. Inside the Kobe Factory (72) Inventor Takamasa Ogata 3-1-1, Higashi-Kawasaki-cho, Chuo-ku, Kobe Kawasaki Heavy Industries Kobe Factory Co., Ltd. (72) Inventor Mitsuhiro Kamioka 3-1-1, Higashi-Kawasaki-cho, Chuo-ku, Kobe Kawasaki Heavy Industries, Ltd. Kobe Factory (56) References JP-A-60-227986 (JP, A) Japanese Utility Model Application 1-66598 (JP) , U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B23P 11/00 G21B 1/00

Claims (7)

(57) [Claims] 1. A cooling wall formed by joining a tube group having a plurality of tubes arranged side by side and a metal plate material surrounding the tube group by hot isostatic pressing. How to make body
In addition, at least one surface of the metal plate material disposed around the tube group has a higher thermal conductivity and is more easily deformed than the above-mentioned tube under the conditions of the temperature and the pressure of the hot isostatic pressing process. It is constituted by a plate material made of a metal, and is made of a metal having a higher thermal conductivity and a deformable shape than the pipe under the conditions of the temperature and the pressure of the hot isostatic pressure treatment. A plate made of a metal that is at least the same as the above-mentioned pipe or is less likely to deform than the above-mentioned pipe under the conditions of temperature and pressure of the hot isostatic pressing process, A method of manufacturing a cooling wall made of a dissimilar metal, which is manufactured by a hydraulic pressure treatment. 2. A nuclear fusion reactor formed by joining a tube group having a plurality of tubes arranged in parallel and a metal plate material surrounding the tube group by hot isostatic pressing. in the fabrication method for cooling the wall body used as the first wall, at least one surface of the metal plate which is disposed to surround the tube bundle, above under conditions of temperature and pressure of the hot isostatic pressure treatment constituted by a plate material consisting of high and easily deformable metal thermal conductivity than the tube, and the tube bank, from the tube under the conditions <br/> matter of temperature and pressure of the hot isostatic pressure treatment between even the plate material consisting of high and easily deformable metal thermal conductivity, equal to or less likely to deform than the pipe with at least the tube under the conditions of temperature and pressure of the hot isostatic pressure treatment It is characterized in that a plate made of metal is inserted and manufactured by hot isostatic pressing. A method of manufacturing a cooling wall made of a seed metal. 3. The method for manufacturing a cooling wall made of dissimilar metal according to claim 1, wherein the plurality of tubes are tubes having a rectangular cross section. 4. The method according to claim 1, wherein the plurality of tubes are tubes having a circular cross section. 5. made from the same or a difficult to deform metal than the tube and at least the tube under <br/> conditions hot isostatic pressing temperature of pressure treatment and pressure plate member has a flat surface manufacturing method of the cooling wall made of dissimilar metals according to claim 1, a plate material. 6. composed from the same or a difficult to deform metal than the tube and at least the tube under <br/> conditions hot isostatic pressing temperature of pressure treatment and pressure plate material, hot isostatic pressing The method of manufacturing a cooling wall made of a dissimilar metal according to any one of claims 1 to 4, wherein the pipe is formed into a cross-sectional shape of an arbitrary pipe after the pressure treatment. 7. Any of claims 1-6 hot isostatic pressure treatment metal which easily and deformed higher thermal conductivity than under tube <br/> conditions of temperature and pressure is copper A method for producing a cooling wall made of a dissimilar metal according to claim 1.