JPS63206404A - Deaerating and hermetic sealing device of capsule container for hot isostatic pressurization treatment - Google Patents

Abstract

PURPOSE:To obviate generation of vacuum leakage in a capsule container consisting of a vessel for housing an object to be treated and a cap to be fitted to the upper aperture of said vessel by housing the above-mentioned capsule container into a hermetic chamber and welding the same in a vacuum. CONSTITUTION:This deaerating and hermetic sealing device for the capsule container 1 for a hot isostatic pressurization (HIP) treatment is formed of a vacuum chamber 6 for hermetically housing the container 1, a hermetic chamber 5, a heater 8 provided circumferentially on the inside thereof, a holder 9, a holding base 10, a means for vertically moving said base and/or the holder 9, a means for rotating the vessel 3 and a welding electrode 11. The above- mentioned container 1 is formed of the bottomed cylindrical housing vessel 3 in which the object 2 to be subjected to the HIP treatment in housed and the cap 4 to be fitted into the upper aperture thereof. The above-mentioned holder 9 hangs the cap 4 freely rotatably. The supporting base 10 holds the vessel 3 freely rotatably.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to hot isostatic pressing (hereinafter abbreviated as HIP).
This invention relates to a degassing and sealing device for metal capsule containers used in processing.

[Conventional technology]

In the HIP process, materials to be processed in the form of powder, fibers, slices, etc. are filled into a capsule container, which is degassed and sealed, and then sintered under high temperature and high pressure pressure medium gas. It has been widely used in recent years as a forming means or as a means to obtain materials with new properties by mixing and sintering materials with different properties, and it is also used to bond and densify objects to be processed. It is also used as a means to reduce and solidify hazardous industrial waste by taking advantage of its effects.

On the other hand, metal or glass are typical materials for these capsule containers, and metal capsule containers are generally widely used because of their advantages such as ease of processing and handling. In addition, we will reduce the volume of hazardous industrial waste.
Since the solidification capsule container needs to function as a sealed container for the object to be processed even after the HIP treatment, a metal container with excellent toughness and strength is used.

As a means for deaerating and sealing these metal capsule containers for HIP processing, the forging method shown in FIG. 5 is generally often used.

In FIG. 5 showing this prior art, (31) is a capsule container, and the capsule container (31) is provided with a degassing pipe (33) protruding from the upper part, and the object to be processed (32) is provided inside the capsule container (31).
). In this prior art, the inside of the capsule container (31) is degassed through a degassing pipe (33), and after reaching a predetermined degree of vacuum, a pair of hammers (34), (34' ), the upper part of the pressed part (35) is cut off, and then the cut part is welded and sealed.

Note that the object to be processed (32) is inside the capsule container (31).
For filling the object to be processed (32) with the degassing pipe (
33) is also used, but this filling method is cumbersome because it is filled through the inner diameter of the degassing tube (33), which is relatively thin in order to ensure forging and sealing after degassing. In addition, it is a method that is difficult to apply to materials other than powder, and generally,
The capsule container (31) consists of a bottomed container (31a) and a lid (31b) equipped with a degassing pipe (33), and the object to be processed (32) is inserted into the container (31a) by press-fitting into the upper opening. After densely filling the object (32) into the capsule container (31b), the fitting part of the container (31a) and the lid (31b) is circumferentially welded.
31) is used.

Furthermore, as an example of a degassing and sealing device for a metal capsule container, there is one disclosed in Japanese Patent Publication No. 61-51002 shown in FIG.

In FIG. 6 showing this conventional apparatus, (41) is a metal capsule container, the capsule container (41) is filled with the object to be processed (42), and the degassing pipe (43) is attached to the upper surface of the capsule container (41). ), and a female thread (44) and a tapered portion (45) are formed on the inner surface of the degassing pipe (43).

(48) is a plug, which is inserted into the degassing pipe (43) to seal the ventilation of the degassing pipe (43), and has a male screw (46) and a male thread on its outer surface. An edge portion (47) and a rond portion (49) are formed below.

(50) is a vacuum container, and the vacuum container (50) is an inverted cup-shaped airtight structure equipped with a degassing passage (51) that communicates with a degassing means, and its lower end is connected through a gasket (52). By airtightly connecting the upper surface of the capsule container (41), a vacuum chamber containing the degassing pipe (43) is formed.

(53) is a holding handle;
3) is installed on the top of the vacuum container (50), and
The plug (4 days) is held at its lower end located in the inside of the plug (4 days) so that it can move freely up and down.

(54) is a guide, and when the vacuum container (50) is set on the capsule container (41), the guide (54) is a plug (54) held by the holding handle (53).
41) is positioned directly above the degassing pipe (43).

Note that the capsule container (41) is a bottomed container (41a).
and a lid (41b) that is equipped with a degassing pipe (43) and fits into the upper opening of the container (41a). After densely filling, cover (41b) and container (41a)
The fitting part is sealed by circumferential welding.

In this conventional technology, a capsule container (41) is filled with an object to be processed (42) in the following steps using an apparatus having the above-mentioned configuration.
This is to degas and seal.

■Insert the plug (48) at the lower end of the holding handle (53) in advance.
) is attached to the capsule container (41).
) A degassing pipe (43) is included in the upper surface and connected.

■ By deaerating the vacuum container (50) through the deaeration passageway (51) while holding the plug (48) at a distance from the deaeration tube (43) inside the vacuum container (50), The inside of the capsule container (41) is evacuated through a communicating deaeration pipe (43).

■After reaching the specified degree of vacuum, plug (48) under deaeration.
Rotate the plug (48) downward into the deaeration pipe (43) using the holding handle (53), and the edge part (47) of the plug (48) is caught in the tapered part of the deaeration pipe (43) to seal the deaeration pipe (43). Stop.

■After making the inside of the vacuum container (50) equal to atmospheric pressure and removing the vacuum container (50), connect the plug (48) and the degassing pipe (43).
) and seal the upper end by circumferential welding.

As mentioned above, this conventional apparatus deaerates the inside of the capsule container via a degassing pipe and seals the degassing pipe when degassing and sealing the capsule container filled with the object to be processed.

[Problem that the invention seeks to solve]

In both conventional technologies, the inside of the capsule container is degassed through a deaeration pipe provided protruding from the top surface of the capsule container, the ventilation of the deaeration pipe is sealed, and the deaeration pipe is then welded. By sealing, the capsule container filled with the object to be processed is degassed and hermetically sealed, but when these were studied, it was found that they had the following drawbacks.

In the former conventional technique (forming press method), it is practically very difficult to completely press the forged part of the degassing tube, and a slight vacuum is generated during cutting after forging and until the welding is completed after cutting. The drawback is that leakage is inevitable.

In addition, although the latter conventional technology (proposed in Japanese Patent Publication No. 1988-51002) seals the degassing tube with a plug while degassing inside the vacuum vessel, welding for final sealing is performed outside the vacuum vessel. In addition, the connection between the degassing pipe and the plug is a mechanical bond between the metal components, and this joint may be contaminated with foreign matter, such as capsules that rose with the exhaust gas during degassing. There is a drawback that when some of the contents of the container adhere to the container, vacuum leakage occurs between the time it is removed from the vacuum container and the time when the welding and sealing is completed.

In addition, during the deaeration, the inside of the vacuum container is kept airtight between the lower end surface of the vacuum container and the upper surface of the capsule container via a packing, and the lower end of the vacuum container and the lower end of the top surface of the capsule container sides are kept airtight. There is a complicated manufacturing process in which special processing is required for the connecting portion, that is, processing to obtain the flatness and surface roughness necessary to maintain airtightness on that surface, albeit through a packing.

Furthermore, in both of these conventional technologies, in order to fill the capsule container with the object to be processed and degas and seal it, as described above, after filling the object to be processed, the lid fitting part is circumferentially welded and sealed, and the object to be processed is degassed. This requires at least two welding and sealing processes, including the subsequent welding and sealing of the sealing part of the degassing tube, and the inner diameter of the degassing tube is made relatively small to facilitate sealing after degassing. However, it has the drawback of reducing its deaeration efficiency.

The degassing tube that protrudes from the top remains even after the HIP treatment, and because of this protrusion, these capsule containers cannot be stacked on top of each other both before and after the HIP treatment, making their handling complicated. It's a bad thing (it has its drawbacks).

In particular, degassing pipes that remain protruding even after HIP treatment are used in the volume reduction and solidification of hazardous industrial waste, whose main purpose is to reduce the volume of the object to be treated and make the storage space smaller.
This is a particularly large drawback that hinders the purpose of volume reduction.

In view of the above-mentioned problems, the present invention eliminates the need for a degassing pipe protruding from the top surface of the capsule container when degassing and sealing a capsule container that accommodates an object to be processed, and reduces the number of seal welding points and the number of seal welds, and still ensures reliable degassing. The object of the present invention is to provide a degassing and sealing device for a capsule container for hot isostatic pressure treatment that can be airtightly sealed.

[Means for solving problems]

In order to solve the above-mentioned problems, the degassing and sealing device for a capsule container for hot isostatic pressure treatment according to the present invention is a bottomed cylinder that accommodates an object to be treated (2) to be subjected to hot isostatic pressure treatment. shaped container (
3) and a lid (4) that fits into the upper opening of the container (3). A vacuum chamber (6) that airtightly accommodates the capsule container +11.
an airtight chamber (5) comprising a gas passageway (7) communicating with a degassing means, the airtight chamber (5)
a holder (9) for freely rotating and suspending the lid (4) from the upper part of the airtight chamber (5);
), and a support stand Ql for rotatably supporting the container (3) is disposed at the lower part thereof, and vertical movement means for vertically moving one or both of the holder (9) and the support stand α [ , a rotation means for rotating the container (3) is provided in the airtight chamber (5), and a height position corresponding to a fitting portion of the container (3) and the lid (4) in the airtight chamber (5). and a welding electrode O with its tip facing the outer periphery of the fitting part.
It is characterized by the provision of D.

[For production]

The device of the present invention, which is equipped with a transport configuration, is a capsule container Tl+.
That is, the bottomed cylindrical container (3) filled and accommodated with the object to be processed (2) and the lid (4) are airtightly housed in the airtight chamber (5), that is, the vacuum chamber (6), and the airtight chamber is closed. (5)
The capsule container (1) is degassed and sealed inside.

The operation of the device of the present invention will be explained below along with the degassing and sealing procedure.

A capsule container (11) housed in an airtight chamber (5)
The lid (3) of the container (3) is freely suspended from a holder (9) disposed at the upper part of the airtight chamber (5).
) is rotatably supported by a support stand aΦ disposed at the bottom.

A vertical movement means is provided for vertically moving one or the other of the holder (9) and the support stand α [present], and by this vertical movement, the lid (4) and the container (3) are brought closer together. They may be fitted together or held apart.

In the degassing step, the inside of the airtight chamber (5) is degassed by a deaeration means communicating with the gas passage (7) provided in the airtight chamber (5). 4) and the container (3) are held apart from each other, and as the air inside the airtight chamber (5) is degassed, the object to be processed! Fill 21・
The inside of the container (3) is also degassed through the upper opening of the container (3).

Note that during degassing, the object to be treated (2) and the capsule container (
The inside of the airtight chamber (5) containing the airtight chamber (5)
) is heated by a heater (8) disposed around the surface, the moisture and gas adhering to these surfaces are activated and efficiently degassed.

After the inside of the airtight chamber (5) including the inside of the container (3) reaches a predetermined degree of vacuum, the lid (4) and the container (3) are fitted together by the vertical movement means, and then a welding process is performed. Move to.

The airtight chamber (5) is provided with means for rotating the container (3), and when the welding process begins, the container (3) is rotated at a predetermined number of revolutions together with the lid (3) fitted to the upper opening. Ru.

Then, the container (3) and the lid (4), which are the parts to be welded, rotate by themselves.
) The outer periphery of the fitting part is vacuum-welded using a welding electrode installed at a height corresponding to the fitting part in the airtight chamber (5) with its tip facing the outer periphery of the fitting part. be done.

In addition, during welding, the lid (4) is prevented from detaching or floating from the container (3) by being held in a freely rotatable manner by the holders IjL and (9) and fitted with a constant pressing pressure. The device of the present invention as described above, which ensures reliable welding and joining with the container (3), is placed in an airtight chamber with the lid of the capsule container accommodated therein and the container held at a distance. The capsule container is degassed by evacuating the inside of the airtight chamber, and then the lid and the container are fitted and rotated while the inside of the airtight chamber is deaerated, and the fitting part between the lid and the container is removed. The outer periphery can be sealed by vacuum welding the upper periphery using a welding electrode provided on an airtight chasoba.

〔Example〕

Embodiments of the apparatus of the present invention will be described below with reference to the drawings.

FIG. 1 is a front cross-sectional view of the main parts of a first embodiment of the device of the present invention.

In Figure 1,! Reference numeral 11 denotes a metal capsule container (11 is composed of a bottomed cylindrical container (3) for accommodating the object to be processed (2) and an M (4) fitted into the upper opening thereof. It is.

(5) is an airtight chamber, the airtight chamber (5)
consists of an upper chamber (5a) and a lower chamber (5b) that are airtightly and removably joined via a fitting part, and a vacuum chamber (6) that airtightly accommodates the capsule container +11 therein.
is formed.

In addition, the insertion and removal of the capsule container (1) was performed by removing the upper chamber (5a).

(7) is a gas passage, and the gas passage (7) communicates the vacuum pump (2) and the vacuum chamber (6).

Reference numeral (8) denotes a heater, which is disposed around the airtight chamber (5) and can be energized by a power supply means (not shown).

(9) is a holder, which is attached via a bearing to the lower end of the piston shaft of the cylinder 00 installed in the upper part of the airtight chamber (5), and is freely movable up and down and rotatable. ).

αω is a rotating table, and the rotating table OI is an airtight chamber (
5) via a bearing, and an airtight chamber (5)
It is connected to the output shaft of a variable speed motor (5) installed at the bottom, and supports the container (3) and rotates it as appropriate.

Note that the rotational axes of the holder (9) and the rotating table (II) are on the same axis, and a container ( 3) Provide a recess that fits with the outer periphery of the bottom, lower the holder (9), and remove the lid (4).
It is assumed that the rotation is smooth when it is fitted into the container (3).

In this embodiment, the capsule container (1) is made of magnetic stainless steel (SUS630), and a magnet is arranged at the lower end of the holder (9) to suspend the lid (4) by magnetic force. However, in consideration of the case where non-magnetic metal is used for the capsule container (1), it is desirable that the holder (9) is also provided with means for gripping the lid (4).

αω is a welding electrode, and the electrode is in an airtight chamber (5).
It is provided at a height position corresponding to the fitting portion between the container (3) and the lid (4), and its tip is arranged to face the outer periphery of the fitting portion. Further, 0!9 is a micromotor, and the motor a9 slightly moves the electrode back and forth through a binion rank mechanism, so that the tip of the electrode fits into the container (3) and the lid (4), which are the objects to be welded. This is to finely adjust the gap between the joint and the outer periphery, that is, the welding gap.

αω is a guide tool, and the guide tool α0 has a spherical body supported by a spring to guide the container (3) onto the turntable αω when the container (3) is inserted. When the container (3) rotates, the upper part of the container (3) is guided to rotate concentrically with the rotation axis of the rotating table αl.

αη is a window, which is made of heat-resistant glass and is used to monitor the vacuum welding state within the airtight chamber (5). In this example, the window αη was provided in the wall of the upper chamber (5a) corresponding to the top of the electrode tip, but it was provided in other parts of the airtight chamber (5) as far as the welding area could be observed. It would also be more desirable to provide a television camera to enable remote observation.

In operation, the apparatus of this embodiment degasses and seals the capsule container using the following procedure.

(2) Remove the upper chamber (5a), insert into the lower chamber (5b) a container (3) filled with the object to be processed (2) in advance to a certain degree of density, and place it on the turntable Ol. In addition, the removed upper chamber (5a) is attached to the lower chamber (5b) after attaching the lid (4) to the lower surface of the holder (9) with the axis of rotation aligned.
mated with.

As described above, the container (3) containing the object to be processed (2) and the lid are airtightly housed in the airtight chamber (5).

■Electricity is applied to the heater (8) to heat and raise the temperature inside the vacuum chamber (6) to a predetermined temperature, and the vacuum pump (foundation) is used to pump the inside of the vacuum chamber (6) to a predetermined vacuum level through the gas passage (7). Degas until During this degassing, the lid (4) is pulled upward by the cylinder αO and held at a distance from the container (3).

As described above, the inside of the container (3) containing the object to be processed (2) is degassed through the upper opening of the container (3), but the deaeration is performed by heating and temperature raising of the heater (8). It is said to be more reliable and faster.

■After the inside of the vacuum chamber (8) reaches a predetermined degree of vacuum, while continuing degassing, lower the lid (4) and fit it into the upper opening of the container (3), then turn off the motor α. The container (3) is rotated at a predetermined rotational speed via the rotating table α. At this time, the lid (4) fitted onto the container (3) also rotates together with the container (3). Then, the outer periphery of the fitting portion between the rotating container (3) and the lid (4) is welded and sealed by vacuum welding using a welding electrode.

(2) After welding is completed, the pressure inside the vacuum chamber (6) is made equal to atmospheric pressure, and the upper chamber (5a) is removed to take out the degassed and sealed capsule container.

In this example, the welding method was electron beam welding, but other welding methods such as laser welding may be used as long as welding under vacuum is possible. .

In the apparatus of this embodiment, since the inside of the container containing the object to be processed is degassed through the upper opening, there is no need to provide a special degassing pipe, and the upper opening of the container is Since the diameter can be the same as the inner diameter of the container, reliable and quick degassing can be performed, and the lid and container can be welded and sealed while degassing.
There is no need to worry about vacuum leakage between completion of welding and sealing after degassing, and furthermore, the welding and sealing steps after accommodating the object to be processed can be performed only once.

FIG. 2 is a cross-sectional view of the main parts of a second embodiment of the device of the present invention, which is the same as the first embodiment shown in FIG. 1 above, except for the configuration and effects described below.

In FIG. 2, (9a) is a holder, and the basic structure of the holder (9a) is the same as that of the first embodiment. It is provided with a protrusion that is separated from the axis. (4a) is a lid, and the basic structure of the lid (4a) that fits into the upper opening of the container (3) is the same as that of the first embodiment, but the holder (4a) is attached to the center of the upper surface of the lid (4a). A recessed portion that fits into the protruding portion of 9a) is provided. II
When attaching the lid (4a) to the holder (9a), the rotation axes of both can be synchronized accurately and easily.
a) and the container (3) are made easy to fit together, and the lid (4a
) and the container (3) during rotation after they are fitted, it is possible to prevent the center run-out of the fitting part, and it has the effect of eliminating the need for the guide tool αe provided in the above-mentioned first embodiment. You can also get it.

α is a variable throttle valve, and the throttle valve α is installed in a conduit that communicates the gas passage (7) of the airtight chamber (5) with the vacuum pump, and is used to remove air in the vacuum chamber (6). This is to suppress the deaeration flow rate in the initial stage.

This is because the inside of the container (3) can be rapidly degassed in the device of the present invention, which degass through a wide opening, that is, the upper opening of the container (3). This is because there is a high risk that a part of the object to be processed will be scattered outside along with the outflowing gas flow, so the initial degassing is slowed down to prevent entrained scattering.

FIG. 3 is a partial sectional view showing a third embodiment of the present invention, which is the same as the second embodiment described above except for the configuration of the airtight chamber (5).

In FIG. 3, (5a) is an upper chamber, and the upper chamber (5a) is the same as that in the second embodiment described above. (5b) is a fixed chamber, and the fixed chamber (5d) is a cylindrical body fixedly attached to the device frame (F). (5e) is a lower chamber, the lower chamber (5e) is airtightly and removably fitted to the lower end of the fixed chamber (5d);
5e) is provided with a rotary table αΦ and a variable speed motor αJ connected to the rotary table α.

In this device, the capsule container (11! (4a)
is suspended from the holder (9a) and accommodated in the airtight chamber (5) from above by fitting into the upper chamber (5a), and the container (3) filled with the object to be processed (2) is rotated. It is supported by the lower chamber (5e) via the stand Ql and accommodated in the airtight chamber (5) from below. The capsule container (1) after being degassed and sealed is supported in the lower chamber (5e) via the rotating table α and taken out from below.

The device of this embodiment facilitates the insertion and removal of capsule containers, and is particularly applicable to deaerating and sealing capsule containers for volume reduction and solidification of hazardous industrial waste, which requires remote control. It is effective.

FIG. 4a is a partial sectional view showing an embodiment of the vertical movement means installed above the airtight chamber (5).

In FIG. 4a, (21) is an axis;
) is the upper part of the airtight chamber (5), that is, the upper chamber (5
a) It is installed through the upper center part so that it can move freely up and down,
It is rotatably connected to the holder (4) at the lower end.

(22) is a metal bellows;
) has its lower end hermetically attached to the upper surface of the upper chamber (5a), and its upper end hermetically attached to the outer periphery of the upper end of the shaft (21), which allows the shaft (21) to move up and down, This provides an airtight connection between the shaft (21) and the upper chamber (5a).

(23) is a cylinder, and the eight cylinder (23) moves the shaft (21) up and down.

In the above embodiment, since the means for vertically moving the holder is provided outside the airtight component of the airtight chamber, it is possible to obtain the effect of widening the selection range of types of driving means.

Figure 4 shows the welding electrode α installed in the airtight chamber (5)
The attachment of υ is a partial cross-sectional view showing an embodiment of the method.

In Figure 4, (Ila) is a welding electrode,
The welding electrode (lla) is disposed at the same position in the airtight chamber (5) as in the first embodiment described above, but is freely movable back and forth in the disposed position. (2
5) is an electrode holder, the holder (25) is supported by a support member (26) attached to the outside of the airtight chamber (5), and is connected to the power input side end of the electrode (lla);
It supports the electrode.

(24) is a metal bellows, and the bellows (24) is a metal bellows.
4) has one end hermetically attached to the outer surface of the airtight chamber (5), and the other end to the electrode (lla) of the holder (25).
It is airtightly attached to the outer periphery of the joint with the electrode (ll
a) This allows the holder (25) to move back and forth, and also provides an airtight connection between the airtight chamber (5) and the holder (25).

(27) is a screw with a handle, and this screw (27) is provided on the support member (26), and its rotation causes the holder (25) to move slightly back and forth.

In the above embodiment, the electrode holder and the electrode fine movement means are provided outside the airtight chamber, which has the effect of simplifying their construction and facilitating maintenance.

〔Effect of the invention〕

As described above, the degassing and sealing device for a capsule container for hot isostatic pressure treatment according to the present invention includes a cylindrical container with a bottom for accommodating an object to be treated, and a lid that fits into an opening on the top of the container. The capsule container is housed in an airtight chamber, and the capsule container is degassed and sealed by vacuum welding in the airtight chamber, and the container containing the object to be processed is degassed through the upper opening. Therefore, it is not necessary to provide a special degassing pipe, and the upper opening can be set as wide as the inner diameter of the degassing pipe, allowing quick and reliable degassing. Since the lid and the container are welded and sealed at the same time, there is no concern that the inside of the container may leak during the period between degassing and completion of welding. The effect can be obtained only once.

In addition, as described above, the device of the present invention eliminates the need for a degassing tube protruding from the top surface of the capsule container when degassing and sealing the capsule container housing the object to be processed, and therefore, it is possible to stack them on top of each other as is. The accommodation space and storage space before and after the hydrostatic pressure treatment can be reduced.

[Brief explanation of the drawing]

FIG. 1 is a front sectional view showing a first embodiment of the present invention. FIG. 2 is a front sectional view showing a second embodiment of the present invention. FIG. 3 is a front sectional view showing a third embodiment of the present invention. FIG. 4a is a partial sectional view showing an embodiment of the present invention. FIG. 4 is a partial sectional view showing an embodiment of the present invention. FIG. 5 is a front sectional view showing the prior art. FIG. 6 is a front sectional view showing a prior art device.
111・Capsule container, (2)...-Object to be processed, (3
)--container, (4)--lid, (5)--airtight chamber, (6)--vacuum chamber, (7)--gas passage, (8)-- -・-Heater, (9)...--Holder, α-toe/support, α-ku...-Welding electrode.

Claims (1)

[Scope of Claims] A bottomed cylindrical container (3) that accommodates an object (2) to be subjected to hot isostatic pressure treatment, and a lid (4) that fits into the upper opening of the container (3). A device for deaerating and sealing a metal capsule container (1) made of An airtight chamber (5) having a gas passageway (7) communicating with a degassing means is provided, a heater (8) is provided around the airtight chamber (5), and an upper part of the airtight chamber (5) is provided. a holder (9) for freely rotating and suspending the lid (4);
Further, a support stand (10) for rotatably supporting the container (3) is disposed at the lower part, and a vertical movement means for vertically moving one or both of the holder (9) and the support stand (10). , a rotation means for rotating the container (3) is provided in the airtight chamber (5), and a height position corresponding to a fitting portion of the container (3) and the lid (4) in the airtight chamber (5). A degassing and sealing device for a capsule container for hot isostatic pressure treatment, characterized in that a welding electrode (11) is provided with its tip facing the outer periphery of the fitting part.