JP2004034114A - Method for manufacturing container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a container manufacturing method which enables an improved clad end plate to be formed by tightly sticking a base material and a lining material together. <P>SOLUTION: The base material 1 and the lining material 2 each formed in a disk shape for the purpose of forming an end plate are superposed, the two materials are formed into a required shape so that the lining material 2 is situated inside, thus forming a clad end plate 3. After that, to the required part on the base material side of this clad end plate 3, a vacuum pump-connecting suction pipe 5 is attached which is in communication with a gap 4 between the base material 1 and the lining material 2. Then, the gap 4 is evacuated by connecting the vacuum pump to this suction pipe 5. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a method for manufacturing a container having a head plate at an end and used as a pressure container or the like.
[0002]
[Prior art and its problems]
In the case of using a higher quality material (nickel alloy, etc.) to manufacture a container head plate than before, if a solid material is used, it will be very expensive, so a clad material is used. At present, it takes a considerable period of time from the time an order is placed until it is actually available, and the price is high. Therefore, instead of using a clad material, a method of forming a laminated mirror plate by bonding a thin lining material made of nickel or the like to the inside of a thick base material made of a steel plate or the like has been performed.
[0003]
In the above-described conventional method, a disk-shaped base material is formed into a required shape such as a dish shape, while a disk-shaped lining material is formed into a plurality of divided petals, and the petal pieces are formed into a base. The lining material is laminated while welding along the inner surface of the material. However, since the lining material is a thin plate, wrinkles are formed even when it is formed as a single piece, the shape is difficult to match with the base material, and the state of close contact with the base material is poor.
[0004]
SUMMARY OF THE INVENTION An object of the present invention is to provide a method for manufacturing a container capable of forming a good mating end plate or a mating body by closely adhering the base material and the lining material without any gap.
[0005]
[Means for Solving the Problems]
In the method for manufacturing a container according to the first aspect of the present invention, a base material 1 for forming a mirror plate and a lining material 2 each formed into a disc shape are overlapped with each other, and both are formed in a required shape so that the lining material 2 is positioned inside. After forming a combined mirror plate 3, a vacuum pump connecting suction pipe 5 communicating with the gap 4 between the base material 1 and the lining material 2 is attached to a required portion of the combined mirror plate 3 on the base material side. A vacuum pump is connected to the suction pipe 5 to evacuate the gap 4.
[0006]
In the method for manufacturing a container according to the second aspect of the present invention, the disk-shaped base material 1 and the lining material 2 each formed into a disc shape are overlapped with each other, and both are formed in a required shape so that the lining material 2 is positioned inside. After forming the laminated head 3 by forming into a shape, the peripheral edges of the base material 1 and the lining material 2 of the laminated head 3 are welded to each other. A vacuum pump connection suction pipe 5 communicating with the gap 4 with the vacuum pipe 2 is attached, a vacuum pump is connected to the suction pipe 5 to evacuate the gap 4, and then the suction pipe 5 is maintained while maintaining the vacuum state. Is crushed to close the suction port, and thereafter, the combined end plate 3 is subjected to a stress relief heat treatment.
[0007]
In the method for manufacturing a container according to the third aspect of the present invention, a lining material 22 is adhered to an inner peripheral surface of a base material 21 formed in a cylindrical shape to form a joining body portion 23. A vacuum pump connection suction pipe 5 communicating with the gap 4 between the base material 21 and the lining material 22 is attached to the portion, and a vacuum pump is connected to the suction pipe 5 so that the gap 4 is evacuated. It is characterized.
[0008]
According to a fourth aspect of the present invention, there is provided a container manufacturing method, wherein a lining material 22 is adhered to an inner peripheral surface of a cylindrical base material 21 to form a joint body 23, and both ends of the joint body 23 are welded. Then, the gap 4 between the base material 21 and the lining material 22 is sealed, and a suction pipe 5 for vacuum pump connection communicating with the gap 4 is attached to a required portion on the base material side. After connecting the pump and evacuating the gap 4, the suction pipe 5 is crushed to close the suction port while maintaining the vacuum state, and then the stress relief heat treatment is applied to the fitting body 23. It is characterized.
[0009]
According to a fifth aspect of the present invention, there is provided a method for manufacturing a container, comprising joining the joining body 23 according to claim 3 or 4 and the joining end plate 3 according to claim 1 or 2 by welding 26 or by a flange joint 28. It is characterized by becoming.
[0010]
According to a sixth aspect of the present invention, in the method for manufacturing a container according to the fifth aspect, an on-off valve 24 is provided on a vacuum pump connection suction pipe 5 attached to each of the aligning end plate 3 and the aligning body portion 23. After the joining with the joining body 23, the gap 4 on the joining end plate side and the gap 4 on the joining body side are each evacuated by a vacuum pump.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a method for manufacturing a container according to the present invention will be described with reference to the drawings. First, a method of forming a combined mirror plate will be described. As shown in FIG. 1, for example, a disk-shaped base material 1 made of a steel plate having a plate thickness of 6 mm and a diameter of about 800 mm, and a plate thickness of 2 mm and a diameter of about 800 mm A disk-shaped lining material 2 made of a nickel alloy plate of 800 mm is prepared, and each of them is pressed by a plate to obtain a plate-shaped base material 1 and a plate-shaped lining material 2 as shown in the drawing. The base material 1 and the dish-shaped lining material 2 are overlapped with the lining material 2 facing upward, and are integrally tightened and fixed by a bolt b and a nut n penetrating the center. In addition, bolt insertion holes 1a and 2a are previously formed in the center portions of the dish-shaped base material 1 and the dish-shaped lining material 2, respectively.
[0012]
The dish-shaped base material 1 and the dish-shaped lining material 2 thus fixed by polymerization are formed into a bowl shape using a spinning machine 11 as shown in the lower part of FIG. 1, and the lining material 2 is formed as shown in the figure. A bowl-shaped alignment mirror plate 3 located inside is formed. The spinning machine 11 draws a pair of mandrels 14 while rotating the superposed dish-shaped base material 1 and dish-shaped lining material 2 sandwiched between a presser 12 and a tailstock shaft 13. ing.
[0013]
In order to form the bowl-shaped laminated mirror plate 3, a press working device as shown in FIG. 2 may be used in addition to the spinning process described above. That is, in this apparatus, the disc-shaped base material 1 and the lining material 2 are placed on the die 15 in a superposed manner, and the pressing plate 16 is arranged thereon, and the punch 17 is used from above. The base material 1 and the lining material 2 are pressed along the dies 15 and pressed to form a bowl-shaped laminated mirror plate 3 similar to that in the case of spinning.
[0014]
In the laminated mirror plate 3 formed as described above, the inner surface of the base material 1 and the outer surface of the lining material 2 in contact with the base material 1 may have a somewhat uneven shape. As shown in FIG. 3A, a gap 4 is formed between the base material 1 and the lining material 2 because the inner surface is not completely adhered.
[0015]
Therefore, in the present invention, as shown in FIG. 3 (A), suction for connecting a vacuum pump is made to the base material side holes 1a of the bolt insertion holes 1a, 2a provided at the center of the alignment head plate 3. The pipe 5 is attached by welding, and the closing plate 6 is welded so as to close the outer end of the lining material side hole 2a. The bolt insertion holes 1 a and 2 a are in a state where they can communicate with the gap 4 between the base material 1 and the lining material 2.
[0016]
In this manner, the combined mirror plate 3 to which the suction pipe 5 for connecting the vacuum pump is attached is placed on the substrate 8 of the vacuuming jig 7, and the peripheral edge of the combined mirror plate 3 is fitted into the fitting groove 9 a of the annular member 9 and fixed. I do. The substrate 8 is provided with a ventilation hole 8a. In this manner, the air tube 20 of a vacuum pump (not shown) is connected to the suction pipe 5 of the aligning mirror plate 3 with the aligning mirror plate 3 set in the jig 7, and the vacuum pump is operated to line up the base material 1 of the aligning mirror plate 3. The gap 4 between the material 2 is evacuated.
[0017]
When the gap 4 between the base material 1 and the lining material 2 of the aligning end plate 3 is evacuated as described above, the strong suction action causes the lining material 2 to apply an external pressure as shown by an arrow P in FIG. Works, thereby deforming the thin plate-shaped lining material 2 so as to eliminate the gap portion 4 with the base material 1, so that the lining material 2 is completely adhered over the entire inner surface of the base material 1 and integrally bonded. . This state is shown in FIG.
[0018]
Depending on the material and thickness of the lining material 2, the deformation state of the lining material 2 due to such a strong suction action may be completely plastically deformed or partially plastically deformed and partially elastically deformed. When the suction force is lost, the state may return to the original state. For example, in the case of the combined mirror plate 3 in which the lining material 2 has a small thickness and is formed of a soft material and can be completely plastically deformed. When the above-described vacuuming operation is completed, the manufacturing process of the combined end plate 3 is completed. When the manufacturing process of the combined head plate 3 is completed, the vacuum pump connection suction pipe 5 is removed from the base material 1 as shown in FIG. 3C, and the concave portion of the removal trace is welded. To fill. The embedding portion is indicated by 10.
[0019]
In the case where the lining material 2 of the joining head plate 3 cannot be completely plastically deformed due to the strong suction action by the above-described vacuuming, and a part thereof is in an elastically deformed state, and there is a possibility that it will return to the original state after vacuuming. Adds steps shown in FIGS. 4A to 4C to the formed combined mirror plate 3.
[0020]
That is, as shown in FIG. 4A, a suction pipe 5 for connecting a vacuum pump is attached to the aligning end plate 3, and the outer end of the lining material side hole 2a is closed with a closing plate 6, and the base material 1 and the lining material 2 are closed. Are welded to each other (the welded portion is indicated by 18), and the gap 4 formed between the lining material 2, the base material 1, and the lining material 2 is completely closed. After the gap 4 between the lining material 2, the base material 1 and the lining material 2 is closed, the air hose 20 of the vacuum pump is connected to the suction pipe 5, and the vacuum pump is operated. The gap 4 between the base material 1 and the lining material 2 is evacuated.
[0021]
In this case as well, the external pressure as shown by an arrow P in FIG. 4A is applied to the lining material 2 by a strong suction action by evacuation of the gap 4 between the base material 1 and the lining material 2 of the combined end plate 3. Works, whereby the thin lining material 2 is deformed so as to eliminate the gap portion 4 with the base material 1, and is brought into a state in which the lining material 2 is completely adhered to and completely adhered to the entire inner surface of the base material 1. The state is shown in FIG.
[0022]
After the evacuation operation is completed, the suction pipe 5 is cut to a required length while the vacuum state of the gap 4 is maintained, and the remaining pipe portion 5o is crushed, and the crushed pipe portion 5o and the closing plate are closed. 6 closes the suction ports 1a and 2a. This state is shown in FIG. After the air hose 20 of the vacuum pump is detached from the suction pipe 5, the combined end plate 3 is subjected to a stress removing heat treatment, thereby reducing the internal stress of the base material 1 and the lining material 2 of the combined end plate 3 in an elastically deformed state. Remove.
[0023]
By removing the internal stress, the lining material 2 can permanently maintain a state of being completely adhered to the entire inner surface of the base material 1 by evacuation. As the stress relieving heat treatment, for example, annealing is performed. After performing the stress relieving heat treatment, the vacuum pump connection suction pipe 5 is removed from the base material 1 as shown in FIG. 4D, and the recessed portion of the removal trace is filled by welding or the like. The embedding portion is indicated by 10.
[0024]
As described above, according to the method of the present invention, the base material 1 and the lining material 2 are overlapped with each other, and the base material 1 and the lining material 2 are formed into a required shape. A vacuum pump connecting suction pipe 5 communicating with the gap 4 with the lining material 2 is attached, and a vacuum pump is connected to the suction pipe 5 to evacuate the thin lining material 2 to the inner surface of the base material 1. It is possible to form a very good alignment mirror plate 3 which is completely adhered to the whole.
[0025]
In the case where the lining material 2 of the joining head plate 3 cannot be completely plastically deformed due to the above-described vacuuming and the lining material 2 may return to the original shape after the vacuuming, the base material 1 of the joining head plate 3 is By welding the peripheral edges of the lining material 2 to each other, the gap 4 formed between the lining material 2, the base material 1 and the lining material 2 is completely closed, and in this state, the gap 4 is removed. After the evacuation is completed, the suction pipe 5 is crushed to close the suction port, and then the internal stresses of the base material 1 and the lining material 2 are removed by subjecting the combined end plate 3 to heat treatment for removing stress. Thereby, the lining material 2 can be brought into a state of being completely adhered to the entire inner surface of the base material 1 permanently.
[0026]
Further, the combined end plate 3 formed as described above is applied to a normal pressure container where internal pressure is not applied so much or a pressurized container where a pressing force acts on the inner surface of the container, but is applied to a vacuum container. In the case of the container including the end plate 3 and the joining body 21 (see FIG. 5) joined thereto, the gap 4 and the joining body 21 in the joining end plate 3 after completion of the container and during use of the container. By evacuating the gap 4, it is possible to sufficiently withstand the vacuum in the container. FIG. 5 shows a method of forming the alignment mirror plate 3 and the alignment barrel 23 in such a case.
[0027]
5 is formed by the above-described method. A suction pipe for connecting a vacuum pump connected to a gap 4 between the base material 1 and the lining material 2 is provided at a required portion of the base material 1. 5 and an on-off valve 24 is provided on the suction pipe 5. At the center of the base material 1, a container entrance 25 is provided.
[0028]
The joining body 23 shown in FIG. 5 is formed by joining a rectangular lining material 22 to an inner peripheral surface of a cylindrical base material 21 in a state where the lining material 22 is rounded into a cylindrical shape. A vacuum pump connection suction pipe 5 communicating with the gap 4 between the base material 21 and the lining material 22 is attached to a required part on the base material side of the fitting body 23, and an on-off valve 24 is provided on the suction pipe 5. It is formed by connecting a vacuum pump to the suction pipe 5 and evacuating the gap 4, and the lining material 22 is completely adhered to the entire inner surface of the base material 21, as in the case of the above-mentioned combined end plate 3. An extremely good mating body 23 is provided. When the rectangular lining material 22 is bonded to the inner peripheral surface of the base material 21 in a state of being rounded into a cylindrical shape, both ends of the lining material 22 are in a state where the lining material 22 is in close contact with the inner peripheral surface of the base material 21. It is welded on the inner peripheral surface of the base material 1 so as to join the portions.
[0029]
In addition, by subjecting the joint body 23 thus formed to a stress relief heat treatment on the joint body, the internal stress of each of the base material 21 and the lining material 22 is removed, whereby the lining material 22 is made permanent. 21 can be completely adhered to the entire inner surface. When the joint body 23 is subjected to the stress relief heat treatment in this manner, both ends of the joint body 23 are welded to form the gap 4 between the base material 21 and the lining material 22 in a closed space state. It is necessary to Welding both ends of the joining body 23 includes a case where one end of the joining body 23 is joined to the joining end plate 3 by welding, and the other end is joined to the same joining body 23 by welding.
[0030]
By joining the joining body 23 formed as described above and the joining end plate 3 by welding (welding portions are indicated by 26), a part of the container as shown in FIG. I do. A pair of such container portions 27 are formed, and a longer matching body portion 23 '(shown by a phantom line in FIG. 5) having the same structure as that of the matching body portion 23 is formed by the same method as described above. A tank-shaped container 29 is formed by joining both ends of the body portion 23 'to a container portion 27 indicated by a solid line in FIG. In FIG. 5, reference numeral 30 denotes a packing for hermetically sealing the flanges 28 when the joining body 23 'is flanged.
[0031]
In addition, both ends of the joining body 23 are welded so as to form a hermetically sealed gap 4 between the base material 21 and the lining material 22. When the gap 4 is evacuated in the process of forming the alignment mirror plate 3 and the alignment barrels 23 and 23 ', respectively, the on-off valve 24 is opened, and when the evacuation operation is completed, the on-off valve 24 is closed.
[0032]
After forming the tank-shaped container 29 composed of the joining head plate 3 and the joining body portions 23 and 23 'as described above, the vacuum pump connection suction pipes 5 attached to the joining head plate 3 and the joining body portions 23 and 23', respectively. By opening the on-off valve 24 and evacuating each gap 4, the container 29 can sufficiently withstand the vacuum even when used as a vacuum container. If the suction pipe 5 for connecting the vacuum pump with the opening / closing valve 24 is left attached to the aligning end plate 3 and the aligning body portions 23, 23 'of the container 29, the container 29 is shipped as a product. Also, the user of the container 29 can evacuate each gap 4.
[0033]
【The invention's effect】
The method according to the first aspect of the present invention is to provide a method for forming a head plate and a lining material by overlapping a base material for forming a head plate and forming a lining material into a required shape, thereby forming a gap between the base material and the lining material. A vacuum pump connection suction pipe communicating with the suction pipe is attached, and a vacuum pump is connected to the suction pipe so as to evacuate the gap, so that the lining material can be brought into close contact with the entire inner surface of the base material. In this way, it is possible to form a well-matched mirror plate.
[0034]
In the method according to the second aspect of the present invention, the suction pipe is crushed while maintaining the vacuum state after evacuating the gap between the base material and the lining material of the joining head plate in the same manner as the first aspect of the invention. Since the suction port is closed and then the stress relief heat treatment is performed on the laminated head plate, there is no possibility that the lining material will be deformed, and a good adhesion state with the base material can be maintained permanently.
[0035]
According to a third aspect of the present invention, there is provided a method of forming a joining body by bonding a lining material to an inner peripheral surface of a base material formed into a cylindrical shape, and forming a base material and a lining material on a required portion of the joining body on the base material side. A vacuum pump connection suction pipe communicating with the gap is attached, and a vacuum pump is connected to this suction pipe to evacuate the gap, so that the lining material adheres over the entire inner surface of the base material. It is possible to form a good fit body in a good fit.
[0036]
In the method according to the fourth aspect of the present invention, the suction pipe is crushed while maintaining the vacuum state after the gap between the base material and the lining material of the joining body is evacuated in the same manner as in the third aspect of the invention. Since the suction opening is closed and the stress relief heat treatment is performed on the mating body after that, there is no possibility that the lining material will be deformed, and a good adhesion state with the base material can be maintained permanently.
[0037]
According to the method of the invention according to claim 5, the joining head part according to claim 3 or 4 and the joining head plate according to claim 1 or 2 are joined by welding or by a flange joint, and It is possible to manufacture a container in which both the fitting body portions are in a good matching state.
[0038]
As in the invention according to claim 6, an opening / closing valve is provided in a vacuum pump connection suction pipe attached to each of the joining head and the joining body, and after joining the joining head and the joining body, the valve on the side of the joining head is provided. By evacuating the gap and the gap on the mating body side with a vacuum pump respectively, even after the container is completed, or after the completed container is shipped as a product, and during use of the container, Since the part can be evacuated, it is possible to sufficiently withstand the vacuum inside the container, particularly when the container is used as a vacuum container.
[Brief description of the drawings]
FIG. 1 is an explanatory view showing a step of forming a combined mirror plate by spinning.
FIG. 2 is an explanatory view showing a step of forming a combined mirror plate by pressing with a die and a punch.
3 (A) is a cross-sectional view illustrating a state where a gap between a base material and a lining material of a combined end plate is evacuated, and FIG. () Is a cross-sectional view in a state in which the evacuation is completed, and (C) is a cross-sectional view in a state in which a vacuum pipe for connecting a vacuum pump is removed from a base material.
4 (A) is a cross-sectional view illustrating a state where a gap between a base material and a lining material of a combined head plate is evacuated, FIG. (B) is a cross-sectional view showing a state in which the evacuation is completed, and (C) is a cross-sectional view showing a state in which a suction pipe for connecting a vacuum pump is cut to a required length, and the cut pipe is crushed to close a suction port. (D) is a sectional view of a state where a crushed pipe portion is removed.
FIG. 5 is a cross-sectional view illustrating a still another method for producing a container according to the present invention, in which a joining head plate and a joining body are joined.
[Explanation of symbols]
REFERENCE SIGNS LIST 1 Base material for forming end plate 2 Lining material for forming end plate 3 Laminated end plate 4 Gap between base material and lining material 5 Suction pipe 21 for connecting vacuum pump 21 Base material for forming body portion 22 Lining material for forming body portion 23 Fitting body 24 On-off valve

Claims (6)

Each of the disk-shaped base material for forming a mirror plate and the lining material are superimposed on each other, and both are formed into a required shape so that the lining material is located on the inner side to form a combined mirror plate. A vacuum pump connection suction pipe communicating with a gap between the base material and the lining material is attached to a required portion of the base material, and a vacuum pump is connected to the suction pipe to evacuate the gap. Method of manufacturing a container. Each of the disk-shaped base material for forming a mirror plate and the lining material are superimposed on each other, and both are formed into a required shape so that the lining material is located on the inner side to form a combined mirror plate. The base material and the lining material are welded to each other at their peripheral edges, and a suction pipe for connecting a vacuum pump that connects to the gap between the base material and the lining material is attached to a required portion of the base material on the base material side. The vacuum port is evacuated and connected, and then the suction pipe is crushed to close the suction port while maintaining the vacuum state, and then the stress relief heat treatment is performed on the combined head plate. Manufacturing method. A lining material is adhered to the inner peripheral surface of the base material formed into a cylindrical shape to form a joint body, and a vacuum pump connection is formed at a required part of the base material side of the joining body to communicate with a gap between the base material and the lining material. And a vacuum pump connected to the suction pipe for evacuating the gap. A lining material is attached to the inner peripheral surface of the base material formed into a cylindrical shape to form a joining body, and both ends of the joining body are welded to seal the gap between the base material and the lining material. Then, a vacuum pump connection suction pipe communicating with the gap is attached to a required portion of the base material side, a vacuum pump is connected to the suction pipe, the gap is evacuated, and the suction pipe is maintained while maintaining the vacuum state. Crushing the suction port to close the suction port, and then subjecting the mating body to a stress relief heat treatment. A method for manufacturing a container, comprising joining the joining body part according to claim 3 or 4 and the joining head plate according to claim 1 by welding or by a flange joint. An opening / closing valve is provided on a vacuum pump connection suction pipe attached to each of the joining head plate and the joining body portion, and after joining the joining head plate and the joining body portion, a gap portion on the joining head plate side and a gap on the joining body portion side. The method for producing a container according to claim 5, wherein each of the parts is evacuated by a vacuum pump.

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