JPS6329185A - Auxiliary station in hot isotropic pressure press facility - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Fields] What is the scope of the present invention? :! The so-called hot isostatic press (HoL 15osLatic) performs sintering, densification, etc. of ceramics or gold powder molded bodies in a high-temperature, high-pressure gas atmosphere.
r'ress, hereinafter abbreviated as "1■IP". ) Related to a device attached to a device that performs preheating and cooling as post-processing of hot isostatic pressing.

[Prior art] As a conventional or r' equipment, the
The one described in Publication No. 1 is known. This kind of r-r-p equipment with an auxiliary station has the following configuration.

An example of this will be explained with reference to FIG. 5, where I is II.
This is a bottom charging type pressure vessel for performing IP processing. This pressure volume z:)1 includes a cylindrical pressure vessel body 2,
It is comprised of an upstream 3 that closes the upper end opening and a downstream 4 that closes the lower end opening. A heat insulating hood 5 is provided inside the pressure vessel 1, and a heater (
(not shown) is provided.

And the pressure volume k I is equal to the pressure capacity k I of the two hli assistant stations l
They are arranged in rows 6 and 7 and fixed to clasp 8. The auxiliary station 6.7 is an inverted cup-shaped container having an opening large enough to fit the lower lid 4 of the pressure vessel 1 at lower IM≦, and has a function of cooling the inside of the storage chamber. Further, the pressure vessel l and the auxiliary station 6.7 are arranged with their respective openings aligned at approximately the same height, and when the lower cover 4 is fitted into the opening of the auxiliary station 6.7, the auxiliary station 6. 7 can be kept airtight.
9 is the pressure volume'? This is a yoke that holds down the upper cover 3 and lower cover 4 against the internal pressure acting on the upper cover 3 and lower cover 4 when the inside of 31 is made high pressure. The yoke 9 is a square-shaped frame mounted on a carriage 10, and can move forward to the position of the pressure volume EII or retreat to the standby position shown in the figure.

Furthermore, a charging cylinder 11 is arranged below the pressure vessel I. This charging cylinder 11 is mounted on a transport vehicle I2 that moves horizontally on a straight line connecting the centers of the pressure vessel 1 and the auxiliary station 6.7, and a TL, directly below the pressure vessel 1, Th1i auxiliary station 6.7. It is stopped directly below the workpiece 7, and the workpiece W to be processed can be loaded, taken out, and transported.

In the IIr P equipment having the above configuration, after performing high temperature and high pressure 14 I P treatment in the pressure vessel 1, the lower lid 4 is
is opened, the workpiece W placed on the lower lid 4 is taken out by the charging cylinder 11, and the workpiece W is transported directly to the empty auxiliary station 7 by the transport table 4 12.
Charge the material into it using the charging cylinder 11, close the lower lid 4, and keep it in the same state. 11? Cooling is performed within the auxiliary station 7. FIG. 5 shows the state immediately before charging into the auxiliary stage tank 7. In this case, in order to prevent oxidation during transportation, the workpiece W is kept covered with the heat insulating hood 5, and in that state is housed in the hff assistant station 7 for cooling.

When the loading of the workpiece W into the hli assistant station 7 is completed, the cylinder is empty! (2) is moved to the auxiliary station 6, the workpiece W that has been preheated in the same station 6 is taken out with the heat insulating hood 5 placed on the lower lid 4, and transported as it is to the empty pressure vessel 1 and charged. Close downstream 4 and start I-1 IP processing.

Next, when cooling is completed in the auxiliary stage sink 7, the workpiece W is taken out from the auxiliary station 7 by the charging cylinder 11 and transferred to another location, and the heat insulating hood 5 is removed and replaced with a new workpiece W. The replaced workpiece W is again covered with the heat insulating hood 5 and transported by the charging cylinder 11 directly below the empty auxiliary station 7. Thereafter, the workpiece W is loaded into the same station 7, and heated here by a heater provided in the heat insulating hood 5 for preheating.

By repeating the above operations, efficient semi-continuous operation is achieved.

[Problems to be Solved by the Invention] By the way, the conventional hli assistant station has one room for storing the object to be processed, and the object to be processed is covered with an insulating hood that is heated to high temperature and has a large heat capacity. This system was designed to be cooled using the following methods, which caused the following problems.

■Although the purpose is to cool the object to be processed, the unnecessary cooling of the insulating hood has to be done at the same time, so cooling takes a long time and energy is wasted in cooling.

■When the object to be processed is cooled, the insulating hood is also cooled at the same time, so when preheating the object to be processed, an extra amount of heat is taken away by the insulating hood (because preheating is done with the insulating hood attached) . Therefore, the preheating time is long and energy is wasted in preheating.

(2) For the above two reasons, in order to carry out HIP treatment semi-continuously and efficiently, a large number of hli auxiliary stages are required to carry out pre- and post-processing, which increases equipment costs.

In light of the above, an object of the present invention is to provide an auxiliary station in which only the object to be processed can be forcibly cooled in a state where the heat insulating hood and the object to be processed are separated.

[Means for Solving the Problems] In order to solve the above-mentioned problems, the hli auxiliary stage engine of the present invention divides the storage chamber into two chambers by using a partition plate that can be closed. A chamber housing the insulated hood,
The chamber on the other side is a chamber for accommodating the object to be processed, and is characterized in that a cooling device is mainly provided on the other side for accommodating the object to be processed.

[Function] HI 1) After taking out the high-temperature processed material together with the heat insulating hood from the pressure vessel 2:) and loading it into the auxiliary station, close the lower lid (upper lid in case of top loading method) and close the bit. Keep the inside of the assistant station airtight and replace with inert gas. Then, in the auxiliary station, the insulating hood is removed from the workpiece, the insulating hood is placed in a chamber on one side, the workpiece is placed in a chamber on the other side, and the partition plate is closed. In this state, the chamber on the other side is cooled. In this way, the object to be processed is efficiently cooled in a bare state. On the other hand, the heat insulating hood is housed in a chamber blocked by a partition plate, so the temperature remains high.

Thereafter, only the cooled object to be processed is taken out from the auxiliary station, and a new object to be processed is loaded into the auxiliary station. Then, the partition plate is opened, the workpiece is covered with an insulating hood, and the workpiece is preheated using a heater. In this case, the heat from the previous time remains in the insulating hood, and heating energy can be saved accordingly.

[Embodiment] Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 and 2.

FIG. 1 is a sectional view of the auxiliary station 21 of the embodiment, and FIG.
The figure is an overall view of the HI f) equipment using the hli assistant station 21.

First, based on Figure 1? l+? The structure of the assistant station 21 will be explained. The reference numeral 22 in the figure is a cylindrical casing, the top of which is closed, and the bottom of which is open so that a downstream 23 of the pressure vessel can be fitted therein. This casing 2
2, the internal storage chamber is divided into two chambers A and r3 that can be freely communicated with and shut off by a partition F224 that can be opened and closed provided at the center in the height direction, and a partition plate 2 is installed in the center of the chamber. It has a storage section 25 of.

This storage section 25 is constituted by a circular or semicircular hollow casing centered at an appropriate position O outside the chambers Δ, B, and communicates with the lower chamber of the cylindrical casing 22.
Its interior is hermetically sealed from the outside. The partition plate 24 is connected to the rotary wheel 2 located at the center O of the storage section 25.
G, it is supported in the storage part 25 so as to be able to rotate in the horizontal direction, and thereby can be freely moved between a closed position (indicated by a solid line in FIG. 1) and an open position (indicated by a two-dot chain line in the same figure). It is designed to be able to rotate.

In this case, when the partition plate 24 is in the closed position, chamber Δ and chamber B are completely blocked off, and when the partition plate 24 is in the open position, compartments A and 1 are almost completely continuous as a cylindrical space. teΔ
Charges can now be moved freely between chamber 11 and chamber 11. Note that 27 is a motor for rotating the partition plate.

Further, an inner flange 28 is provided at the boundary between the chamber and the chamber B for tightly holding the sealing member 29 attached to the upper surface of the partition plate 24. Tightly seal the seal 1 on the partition plate 2 on the material 29.
By doing so, compartments A and I3 can be hermetically sealed off.

The two sealing members in this case are tubular, and by introducing compressed gas into the interior and inflating the inner flange 2.
8 can be made into a dense rock, and the same gas can be removed and it will wither.
〜Rukoshichi, between the partition plate 24 and the inner flange 28,
A gap can be formed to facilitate horizontal rotation of the partition plate 24.

Further, the lower chamber A has a gas inlet 30 at the lower part and a gas outlet 31 at the upper part. There is.

The upper chamber B is a chamber for accommodating the heat insulating hood 15, and the lower chamber Δ is a chamber for accommodating the workpiece W. As a means for separating the heat insulating hood 15 from the workpiece W, a hood lifting cylinder 32 is provided on the ceiling of the upper chamber.

This cylinder 32 is arranged with a rod 33 inserted into the chamber B, and a connection fitting 34 with an electromagnet attached to the tip of the rod 33 is raised and lowered in the range from the upper seat of the chamber to the upper part of the chamber 13. It is set up so that it can be done.

Here, the elements to be inserted, such as the heat insulating hood 15 and the lower 'fi 23, will be explained.

The heat insulating hood 15 is made of an inverted cup-shaped scrap temporary outer skin lined with a heat insulating material, and can be attracted by a connecting metal fitting 34 with an electromagnet fixed to the tip of the rod 33 of the hood lifting cylinder 32. There is. A heater 1G is provided inside.

In addition, in the case of this embodiment, the lower lid 23 has a permanent magnet 3G embedded in the upper surface of the cylinder 35, and
(See Figure 2) Lower end surface or auxiliary station 21
It is possible to attract and engage with the lower end surface of the casing 22 by magnetic force. In addition, 37 is a pedestal for heat insulation, and 38 is an O-ring.

In the II II I) equipment shown in Figure 2,
The auxiliary station 21 having the above-mentioned configuration is similar to that of conventional equipment.
It is provided in place of the li-suke station.

Furthermore, the equipment shown in FIG. 2 differs from the conventional equipment shown in FIG. 5 in the following points. In other words, pressure volume? :) The lower cover 23 of 1 is of a type that can be engaged with magnetic force as described above. Furthermore, a pedestal 39 with an electromagnet that can magnetically engage the lower portion 2123 is provided at the tip of the rod of the charging cylinder 11. Other points are similar to those shown in FIG.

Next, the procedure for carrying out actual operation using the equipment shown in FIG. 2 will be explained.

First, once the high-temperature compression process in pressure vessel I is completed, the pressure vessel! The internal pressure is reduced to atmospheric pressure, and the yoke 9 is moved to the standby position. After that, the charging cylinder 11 moves the lower lid 23, the insulation hood I5, and the heater while keeping the temperature high! 6. Take out the pedestal 37 and the workpiece W together. Then, move the charging cylinder 11 to the position directly below the hn assistant station 2I, and then charge the workpiece W from the bottom.

At this time, the heat insulating hood 15, heater 1G, and pedestal 37 are inserted together.

When inserted together into the hft auxiliary station 21, the lower cover 23 is attracted to the lower surface of the casing 22 of the auxiliary station 21 by the permanent magnet 36, and an airtight engagement is automatically achieved. When charging is completed, the empty charging shilling +1 is moved to the other auxiliary station 21, and the workpiece W, which has been preheated in the same station 21, is taken out with the heat insulating hood 5 placed on the lower lid 4. , transport it as it is to the empty pressure vessel l, charge it, close the lower lid 4, and press [-1I
Shift to P processing. On the other hand, the above-mentioned HI I) auxiliary station 2 loaded with the processed workpiece W! In this case, with the gas inlet 30 closed, the gas outlet 31 is closed.
From there, the inside of the cage and the pufferfish 22 are evacuated by a pump (not shown), and then inert gas is supplied from the gas inlet 30 to replace the inside of the auxiliary station 21 with the inert gas. Then the rod 33 of the hood lifting cylinder 32
is lowered, the heat insulating hood 15 is sucked up by the connecting hardware 34, and the heat insulating hood t, 5 is lifted up over the heater I6. Then, the heat insulating hood 15 and the workpiece W are isolated into separate chambers B and Δ, and the workpiece W is placed in a section state.

In this state, rotate the partition plate 24 and stop it at the closed position +T
Then, compressed gas is introduced into the two sealing stamp materials to inflate the sealing member 29, and the sealing member 29 is tightly sealed to the inner flange 28. By doing so, both chambers A and [1 are hermetically isolated.

In this state, gas is introduced (inert gas for cooling is introduced from the gas outlet 30 and discharged from the gas outlet 31, and the gas is discharged from the chamber A.
A cooling gas is passed through U, thereby cooling the object W to be processed.

By doing so, the object W to be processed is efficiently cooled within the chamber Δ.

On the other hand, chamber B is not affected by the cooling gas in chamber A because it is airtightly isolated from the other chambers by the partition plate 24. Therefore, the heat insulating hood 15 housed therein is
Keep it at high temperature [,′? will be done.

When cooling is completed, reposition the charging cylinder 11 directly below the supporting station 21, and remove the charging cylinder!
The rod (2) is raised and the electromagnet of the pedestal 39 provided at its tip is energized to attract the lower cover 23. And charging cylinder 1! The rod U is lowered and the workpiece W placed on the lower lid 23 is taken out. The removed workpiece W is in the charging cylinder! Move the + to another location and exchange it with the new B's.

After loading a new workpiece W, the charging cylinder 11 is positioned directly below the auxiliary station 21 again. Then, the rod of the charging cylinder II is raised and the workpiece W is
It is charged into the auxiliary station 21 from below. When the workpiece W is loaded, the lower lid 23 is brought into contact with the lower end surface of the casing 22 of the hli assistant station 21. Then, the lower lid 23 is attracted to the casing 22 by the permanent magnet 36 embedded therein, and the lower lid 23 is airtightly engaged with the casing 22. Thereafter, the charging cylinder II moves to the next operation by demagnetizing the 7ti magnet on the pedestal 39 and lowering the rod.

At this time, in the auxiliary station 2I, the workpiece W is housed in the chamber A, and the heat insulating hood 15 maintained at a high temperature is housed in the chamber B under an inert gas atmosphere. Therefore,
Next, the inside of chamber A is replaced with an inert gas, and after the replacement, the partition plate 24 is opened to bring both chambers Δ and 13 into communication.

In that state, the hood lifting cylinder 32
The insulation hood is lowered and attached to the connecting hardware 34! 5 is suspended and covered with the workpiece W from above.

Next, after connecting the heater power supply cable and the like, the heater I6 is energized to preheat the object W to be processed.

At this time, since the heat insulating hood I5 is maintained at a high temperature from the beginning, the amount of heat taken by the heat insulating hood i5 is small, and preheating can be performed quickly and efficiently.

By repeating the above operations, you can create a semi-continuous pressure vessel! can be used for the If r P treatment, and the pressure volume 'L
It is possible to improve the efficiency of u-oIP processing by improving the utilization rate of 41 plants.

Next, another embodiment of the auxiliary station of the present invention will be described with reference to FIGS. 3 and 4.

Auxiliary station 5 in this example! is a top-loading type 1
4I is used for IP equipment.

The top loading type is one in which the top lid of the pressure vessel is opened to load and unload the material to be treated. In this method, as shown in FIG. 3, the object W to be processed is suspended and supported by the upper lid 52.

That is, in the case of this example, a hanging bead 53 is fixed to the lower surface of the upper lid 52, an inverted cup-shaped insulating hood 54 is suspended from the hanging piece 53, and a bottom plate 55 is removably engaged with the lower end of the insulating hood 54. and this bottom plate 55
The object W to be processed is 11i1! be placed.

Further, in this case, the engagement between the heat insulating hood 54 and the bottom plate 55 is achieved by, as shown in FIG. This is done by hooking a hook 57 to the bin 56. By making a slight relative movement in the circumferential direction, it can be engaged or disengaged.

Next, the auxiliary station 5I will be described.

til+sukestenjin 5 of this example! differs from Example B in the following points. The upper part of the casing 60 has an opening into which the pressure vessel upper lid 52 fits, and a heat insulating hood Fj
i There is no lifting cylinder.

In addition, the rod 61 is freely lowered so that it can slide airtightly into the opening formed in the lower part of the casing 60. The other nine points have the same configuration as the auxiliary station of the surface-mounted embodiment.

Therefore, the same reference numerals are given and the explanation is omitted.

The rod 61 of the rI77 recording/receiving device is inserted from the lower end opening of the casing 66, and is equipped to be able to move up and down in the range from the lower position outside the casing 60 to the lower position of the chamber B inside the casing 60. . This rod 6I
The workpiece W, which is charged from above the casing 60 while being covered with the heat insulating hood 54, is separated from the heat insulating hood 54, the receiver is removed, the workpiece is separated into the lower chamber, and then the casing is covered with the heat insulating hood 54. 60 to take it out from below.

When removing the holder, the bottom plate 55 should be able to be sucked, and the holder should be attached to the rod 6.
An m magnet 62 is built into the top surface of the magnet 1.

In addition, 63 and G4 in FIG. 3 are sealing materials.

Next, a processing procedure by the hit assist station 51 having the above configuration will be explained.

After the high temperature compression process in the pressure vessel (not shown) is completed,
Pressurize the inside of the container to atmospheric pressure, 3. - After the vessel was removed from the pressure vessel and moved, a crane (not shown) was used to move it.
The upper lid 52, the heat insulating hood 54, the heater 1G, the pedestal 37, the bottom plate 55, and the object W to be processed are taken out in one piece while still at high temperature, and the empty hl? It is loaded into the auxiliary station 51 from above. When charging is completed, the workpiece W that has been preheated at the other auxiliary station 51 is taken out together with the heat insulating hood 54, upper lid 52, heater 16, pedestal 37, and bottom plate 55 using a crane, and is placed in the empty pressure chamber 2. The material is charged into the chamber from above and the process proceeds to II I P treatment.

When the workpiece W is loaded into the auxiliary station 51,
With the partition plate 24 open, the receiver temporarily closes the rod 61 and fits its tip into the lower end opening of the casing 60 of the auxiliary station 51. Then, the inside of chambers A and 13 are hermetically sealed off from the outside.

In this state, the gas inlet 30 is closed and the air inside the silkworms Δ and B is vented through the gas exhaust port 3I. After evacuating chambers Δ and B, the exhaust port 31 is closed and the insides of chambers A and B are replaced with inert gas. When the replacement with the inert gas is completed, the rod 61 is raised and its tip passes through the chamber A until it reaches the bottom of the chamber B. Then, after opening the exhaust port 31, place the tip of the knot 61 tightly against the bottom surface of the bottom plate 55, and then further (A, the receiver is built into the rod 61?1.f the magnet 62 During the upward stroke of the rod 61, the interior of the auxiliary station 51 is kept airtight by the sealing material 63.

Next, rotate the upper fi 52 slightly to disengage the bottom plate 55 and the heat insulating hood 54, and then lower the receiver [JRAD G1]. Then, the cough treatment material W is separated from the heat insulating hood 54 and placed on the rod 61. Then, when the workpiece W has moved into the lower chamber A, the lowering of the receiver 61 is stopped.

In this state, the workpiece W is placed in chamber A, and the heat insulating hood 54 is placed in chamber B.Then, the partition plate 24 is turned to the closed position to shut off both chambers A and B. A cooling inert gas is introduced into the chamber A from the gas inlet 30 to cool the object W to be processed.

At this time, the object W to be processed is efficiently cooled in the chamber A. On the other hand, chamber B is not affected by the cooling gas in chamber A because it is airtightly isolated from the other chambers by the partition plate 24. Therefore, the heat insulating hood 54 housed therein is maintained at a high temperature.

When cooling is completed, the receiver lowers the rod Gl. Then, the workpiece W is taken out from the lower end opening of the casing 60 with the receiver resting on the rod 61. The taken out processed workpiece W is then transported to another place and exchanged with the unprocessed workpiece W, and the replaced new workpiece W is again placed on the [1] door 61 and placed inside the assistant station 51. Charge to.

In that case, first, the object W to be processed is placed in the chamber, and the interior of the chamber is replaced with an inert gas while the chamber is made airtight. After that,
Open the partition 24 and put the parts A and 13 in communication, and the receiver raises the rod Gl and places the object 1111 W therein in the room B.
move inside. The workpiece W is placed inside the heat insulating hood 54.
After inserting the cover, rotate the top cover 52 slightly to engage the bottom plate 55 and the heat insulating hood 54. Then, the object W to be processed is suspended and supported within the heat insulating hood 54.

Thereafter, while lowering the a-rad 61, power is applied to the heater 1G in the heat insulating hood 54 to heat the workpiece W and preheat it.

At this time, since the heat insulating hood 54 is kept at a high temperature from the beginning, the amount of heat taken away by the heat insulating hood 54 is small, and preheating can be performed quickly and efficiently.

In addition, in this embodiment, the heat insulating hood 54 and the bottom plate 5
When engaging and disengaging 5, the upper cover 52 side is rotated, but the receiver should be rotated on the rod 61 side.

In addition, in the above embodiments, the case where both preheating and cooling are performed, but only cooling (not b)
good. In this case, once the workpiece is loaded into the auxiliary station, the heat insulating hood and the workpiece are separated and housed in separate chambers, similar to rInIn, and the workpiece is cooled in the section. After cooling, the workpiece is taken out, replaced with a new workpiece, and then loaded into the auxiliary station again. Then, a heat insulating hood is placed over the container, and the material to be treated is directly charged into the pressure vessel.

In this case, the heat insulating hood does not need to be cooled, so the cooling efficiency is good.Furthermore, since the heat insulating hood is already at a high temperature when it is inserted into the pressure vessel, the heating efficiency is good.

[Effects of the Invention] As described above, the auxiliary station of the present invention divides the storage chamber into two rooms with a partition plate, and separately accommodates the heat insulating hood and the object to be processed inside the hi auxiliary station. Since only the processed material can be cooled, the following effects are achieved.

■Since the insulation hood is not cooled, sufficient energy is not required for cooling.

■Since the workpiece is cooled in the section, the cooling efficiency h<good.

■Since the insulation hood is not cooled, the insulation hood remains at high temperature. Therefore, when preheating is performed next time, the preheating energy for raising the temperature of the insulating hood is not wasted, and the preheating efficiency is high.

■Since cooling efficiency and preheating efficiency can be increased, it is possible to increase the operating rate of expensive hot isostatic presses with a small number of auxiliary stations, thereby improving the productivity of the entire hot isostatic press equipment. be able to.

[Brief explanation of the drawing]

Fig. 1 is a side sectional view of an embodiment of the present invention, Fig. 2 is an overall view of hot isostatic press equipment using the hli assistant station of the same embodiment, and Fig. 3 is a side sectional view of an embodiment of the present invention. FIG. 4 is a side sectional view of the retaining portion of the bottom plate and the heat insulating hood in the same embodiment, and FIG. 5 is an overall side view showing an example of conventional IIIP equipment. ! ......Pressure vessel 15...Insulation hood 16...Heater 21...hl
? l Daisuke-tion 22... Casing 23.
...Downstream 24...Partition plate 25...
... Storage section 27 ... Swivel motor 29 ...
... Seal member 30 ... Gas inlet 3I
... Gas discharge port 32 ... Insulation hood lifting cylinder 51 ... Auxiliary stage gin 52 ... Top lid 54 ... Insulation hood 55 ... ... Bottom plate 60 ... Casing 61 ... Rod applicant Ishikawajima Harima Heavy Industries Co., Ltd. Figure 1 ffi 23 3738 Figure 2 Figure 8

Claims (1)

[Claims] This is installed in hot isostatic press equipment that takes the workpiece after hot isostatic press treatment to the outside of the pressure vessel together with the insulated hood that surrounds it and cools it, and houses the workpiece together with the insulated hood. At the auxiliary station for cooling, the storage room is divided into two rooms by dividing it with a partition plate that can be opened and closed.
An auxiliary hot isostatic press equipment characterized in that one side of the chamber accommodates an insulating hood, the other side of the chamber accommodates the processed material, and the other side of the chamber is equipped with a cooling device. station.