JPH057120B2 - - Google Patents
Info
- Publication number
- JPH057120B2 JPH057120B2 JP61077026A JP7702686A JPH057120B2 JP H057120 B2 JPH057120 B2 JP H057120B2 JP 61077026 A JP61077026 A JP 61077026A JP 7702686 A JP7702686 A JP 7702686A JP H057120 B2 JPH057120 B2 JP H057120B2
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- container
- gas
- pressure reduction
- low
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000007788 liquid Substances 0.000 claims description 14
- 238000000465 moulding Methods 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 5
- 239000000843 powder Substances 0.000 description 6
- 230000006837 decompression Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002706 hydrostatic effect Effects 0.000 description 2
- 238000011946 reduction process Methods 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 238000009694 cold isostatic pressing Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B11/00—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses
- B30B11/001—Presses specially adapted for forming shaped articles from material in particulate or plastic state, e.g. briquetting presses, tabletting presses using a flexible element, e.g. diaphragm, urged by fluid pressure; Isostatic presses
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Press Drives And Press Lines (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、冷間静水圧加圧装置における減圧制
御装置に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a pressure reduction control device in a cold isostatic pressurization device.
（従来の技術）
粉末体の加圧成形に当つた、ラバープレスとし
てよく知られているように、高圧成形容器内に静
水圧を供給し、同容器内に封入された粉末体を加
圧成形する冷間静水圧加圧装置は、粉末体の湿式
成形プレス手段として多用されている。(Prior art) Hydrostatic pressure is supplied into a high-pressure molding container, and the powder sealed in the container is pressure-molded, as is well known as a rubber press, which presses and molds powder bodies. Cold isostatic pressing equipment is widely used as a wet-forming press means for powder bodies.
この装置の概要は、プラグが開閉自在に密栓さ
れる高圧成形容器内に、ゴム袋、サポート等を介
して目的の粉末体を予備成形状にセツトして封入
し、容器内に圧力水を供給し、その昇圧による高
圧化と共に粉末体を加圧成形するものである。 The outline of this device is that the desired powder is set in a preformed shape and sealed in a high-pressure molded container with a plug that can be opened and closed via a rubber bag, support, etc., and pressurized water is supplied into the container. Then, the pressure is increased by increasing the pressure, and the powder is press-molded.
そして、加圧成形後は容器内の高圧の圧媒圧力
を減圧し、プレス製品を取り出すが、その減圧過
程は一次、二次と段階的に処理され、これらは勿
論予じめ設定した減圧速度またはそのパターンに
よる減圧プログラムに従つて自動制御される。 After pressure forming, the pressure of the high pressure medium in the container is reduced and the pressed product is taken out, but the pressure reduction process is carried out in stages, first and second, and these are of course performed at a preset pressure reduction rate. Or it is automatically controlled according to a decompression program based on that pattern.
この際、その減圧過程において、特に重要な要
素として、二次減圧開始圧力および二次減圧速度
またはそのパターンであり、これを誤ると容器内
の加圧成形品に割れやひびが発生する。 At this time, in the pressure reduction process, particularly important factors are the secondary pressure reduction start pressure and the secondary pressure reduction rate or their pattern, and if these are incorrect, cracks or cracks will occur in the pressure-molded product inside the container.
この二次減圧速度およびパターンは、被成形材
料の種類や組成および形状によつて左右され、そ
れらに適した減圧プログラムの設定が必要である
が、従来この減圧に当つては、その圧媒回路にお
ける流量の機械的絞り手段によつて終始制御する
のであり、このため次の問題点が発生する。 This secondary decompression speed and pattern depend on the type, composition, and shape of the material to be molded, and it is necessary to set a depressurization program suitable for them. Conventionally, when performing this depressurization, the pressure medium circuit The flow rate is controlled from beginning to end by mechanical restricting means, which causes the following problem.
即ちプログラム設定器よりの指令によつて、圧
媒回路に設けたニードル弁やオリフイスの開度
を、ステツピングモータやサーボ弁等によつて駆
動し、その流量制御によつて減圧を行なうのであ
り、指令信号に従つたニードル弁やオリフイスの
開度は得られるが、圧媒を直接これら弁やオリフ
イスで機械的に絞ることは、ニードル弁やオリフ
イスそのものがエロージヨン等によつて損耗する
ため、安定した制御を行なうことが難しく、減圧
プログラムにバラツキを生じたり、また圧媒の温
度変化に伴なう粘度変化によつて、減圧速度が変
化したりして、満足できる再現性が得られないと
ともに、減圧途中で圧力保持の必要がある場合、
パツキン等からのリーク（漏れ）があると補償で
きない等の問題点があり、長期に亘り安定した結
果の得られる減圧制御系として改善の必要があつ
た。 In other words, the opening degrees of needle valves and orifices installed in the pressure medium circuit are driven by stepping motors, servo valves, etc. according to commands from the program setting device, and the pressure is reduced by controlling the flow rate. Although it is possible to obtain the opening degree of the needle valve or orifice according to the command signal, mechanically restricting the pressure medium directly with these valves or orifices is not stable because the needle valve or orifice itself will be worn out due to erosion, etc. It is difficult to perform accurate control, causing variations in the pressure reduction program, and the pressure reduction rate changes due to changes in viscosity due to changes in pressure medium temperature, making it impossible to obtain satisfactory reproducibility. , if it is necessary to maintain pressure during decompression,
There are problems such as the inability to compensate for leaks from gaskets, etc., and there is a need to improve the depressurization control system so that it can provide stable results over a long period of time.
そこで、本件出願人は、特公昭59−18159号公
報によつて、機械的絞り手段を具備した一次減圧
回路と、高圧成形容器内の圧媒圧を導入する導入
シリンダと油圧ユニツトの油圧をサーボ弁を介し
て導入する油圧シリンダとを一体的に連動連結し
た液圧−油圧対抗シリンダを具備した二次減圧回
路と、を高圧成形容器に並列的に接続すると共
に、該二次減圧回路には、圧媒圧を検出する圧力
検出器と、予じめ減圧プログラムを設定する減圧
プログラム設定器と、前記圧力検出器の検出信号
と減圧プログラム設定器からの設定信号とを比較
し前記サーボ弁を作動させる信号を出力するサー
ボ増巾器とを具備している冷間静水圧加圧装置に
おける減圧装置を提案し、それなりの実績を挙げ
ている。 Therefore, the applicant of the present application proposed, in accordance with Japanese Patent Publication No. 59-18159, a primary pressure reducing circuit equipped with a mechanical throttling means, an introduction cylinder for introducing the pressure medium pressure in the high-pressure molded container, and a servo system for controlling the hydraulic pressure of the hydraulic unit. A secondary pressure reduction circuit equipped with a hydraulic-hydraulic opposing cylinder integrally connected to a hydraulic cylinder introduced via a valve is connected in parallel to the high-pressure molded container, and the secondary pressure reduction circuit includes: , a pressure detector that detects pressure medium pressure, a pressure reduction program setting device that sets a pressure reduction program in advance, and a detection signal of the pressure detector and a setting signal from the pressure reduction program setting device are compared to set the servo valve. We have proposed a pressure reducing device for a cold isostatic pressurization device that is equipped with a servo amplifier that outputs an activation signal, and has achieved some success.
（発明が解決しようとする問題点）
ところで、前述公報で提案した技術にあつて
は、10〜５Kg・ｆ／cm2まで制御できるが、非常に
脆い成形体にあつては、この圧力でも割れが発生
することがあり、このため、成形前にゴム型内を
真空引きする等の処理が必要であつた。(Problem to be solved by the invention) By the way, the technology proposed in the above-mentioned publication can be controlled to 10 to 5 kg・f/ cm2 , but very brittle molded products may crack even under this pressure. Therefore, it was necessary to carry out treatments such as vacuuming the inside of the rubber mold before molding.
また、10〜５Kg・ｆ／cm2以下の圧力制御は、1/
１００程度の制御範囲となり、精度上安定性が悪く、
圧媒内の混入空気の影響によつて、減圧ボリユー
ムが非常に大きくなり、二次減圧用の液圧−油圧
対抗シリンダ自体が大形となる。 In addition, pressure control of 10 to 5 kg・f/cm 2 or less is 1/
The control range is about 100, and the stability is poor in terms of accuracy.
Due to the influence of air entrained in the pressure medium, the pressure reduction volume becomes very large, and the hydraulic-hydraulic opposing cylinder itself for secondary pressure reduction becomes large.
そこで、本発明では従来の減圧−油圧対抗シリ
ンダに代えて、減圧−気圧対抗形の容器を採用す
ることによつて、三次減圧として9.9Kg・ｆ／cm2
以下として高圧ガスに引掛らない範囲でガス圧を
コントロールし、1.0Kg・ｆ／cm2程度まで精度よ
く圧力制御可能としたことを目的とする。 Therefore, in the present invention, a tertiary reduced pressure of 9.9Kg・f/cm 2 is achieved by adopting a reduced pressure-atmospheric pressure container instead of the conventional reduced pressure-hydraulic counter cylinder.
The purpose of the following is to control the gas pressure within a range that does not get caught in high-pressure gas, and to be able to accurately control the pressure to about 1.0 Kg・f/cm 2 .
（問題点を解決するための手段）
本発明が前述目的を達成するために講じた技術
的手段の特徴とする処は、高圧成形容器１内で静
水圧加圧により被成形材料Ａを加圧成形するとと
もに、機械的絞り手段４ａ，４ｂを具備した一次
減圧回路３Ａと二次減圧回路７Ｂとが前記高圧成
形容器１に並列的に接続されて加圧成形後の圧媒
圧力の減圧を予じめ設定した減圧速度その他の減
圧プログラムに従つて行なう減圧制御装置におい
て、
前記二次減圧回路７Ｂに、切換弁１４を介して
圧媒の低圧域の圧縮分以上の容量を有する気液低
圧容器１０が設けられ、該容器１０と切換弁１４
との間に、圧媒の低圧圧力検出器１６が設けら
れ、更に、前記気液低圧容器１０に、気体を供給
する気体供給回路１１Ｂが設けられ、該気体供給
回路１１Ｂに、前記圧力検出器１６と連動する圧
力調整器１２が具備されている点にある。(Means for Solving the Problems) The technical means taken by the present invention to achieve the above object are characterized by pressurizing the material A to be molded by hydrostatic pressure in the high-pressure molding container 1. During molding, a primary pressure reducing circuit 3A and a secondary pressure reducing circuit 7B equipped with mechanical expansion means 4a and 4b are connected in parallel to the high-pressure molded container 1 to preliminarily reduce the pressure of the pressure medium after pressure molding. In a pressure reduction control device that performs pressure reduction according to a previously set pressure reduction rate and other pressure reduction programs, a gas-liquid low-pressure container having a capacity equal to or larger than that for compression of the low pressure region of the pressure medium is connected to the secondary pressure reduction circuit 7B via the switching valve 14. 10 is provided, the container 10 and the switching valve 14
A low-pressure pressure detector 16 for a pressure medium is provided between the gas-liquid low-pressure container 10, and a gas supply circuit 11B that supplies gas to the gas-liquid low-pressure container 10. The pressure regulator 12 is provided in conjunction with the pressure regulator 16.
（実施例と作用）
図において、１は高圧成形容器であり、容器本
体１Ａとその上下開口端に施蓋された上・下蓋体
１Ｂ，１Ｃとからなり、少なくともいずれか一方
の蓋体は容器本体１Ａに対して着脱固定自在であ
る。(Example and operation) In the figure, 1 is a high-pressure molded container, which is composed of a container body 1A and upper and lower lids 1B and 1C that are placed on the upper and lower opening ends of the container, and at least one of the lids is It can be attached to and detached from the container body 1A.
２は超高圧発生手段であり、具体的には高圧ポ
ンプであり、チエツク弁２Ａを介して容器内に超
高圧配管３が接続されている。 2 is an ultra-high pressure generating means, specifically a high-pressure pump, and an ultra-high pressure pipe 3 is connected to the inside of the container via a check valve 2A.
超高圧配管３には高圧圧力検出器１５が具備さ
れているとともに、機械的絞り手段４ａ，４ｂと
切換弁５ａ，５ｂとを具備する一次減圧回路３Ａ
が接続されている。 The ultra-high pressure pipe 3 is equipped with a high pressure detector 15, and a primary pressure reducing circuit 3A comprising mechanical throttle means 4a, 4b and switching valves 5a, 5b.
is connected.
７は低圧配管であり、給水ポンプ（低圧ポン
プ）９を有しており、該ポンプ９からの圧媒はチ
エツク弁９Ａ、排水弁、パイロツトチエツク弁等
よりなる超高圧切換弁６を介して容器１内に接続
されている。 7 is a low-pressure pipe, and has a water supply pump (low-pressure pump) 9, and the pressure medium from the pump 9 is transferred to the container via an ultra-high pressure switching valve 6 consisting of a check valve 9A, a drain valve, a pilot check valve, etc. Connected within 1.
８は低圧切換弁であり、低圧配管７に接続され
ているドレン配管７Ａに具備されている。 Reference numeral 8 denotes a low pressure switching valve, which is provided in the drain pipe 7A connected to the low pressure pipe 7.
１０は気液低圧容器であり、具体的にはボンベ
であつて、低圧配管７に接続されている二次減圧
回路７Ｂに、第２低圧切換弁１４を介して具備さ
れている。 Reference numeral 10 denotes a gas-liquid low pressure container, specifically a cylinder, which is provided in the secondary pressure reducing circuit 7B connected to the low pressure piping 7 via the second low pressure switching valve 14.
ここに、高圧成形容器１に一次減圧回路３Ａと
二次減圧回路７Ｂとが並列的に接続されている。 Here, a primary pressure reducing circuit 3A and a secondary pressure reducing circuit 7B are connected in parallel to the high pressure molded container 1.
１１は気体供給手段であり、ポンプ又はコンプ
レツサで構成されており、切換弁１１Ａを有する
供給回路１１Ｂを介して圧媒の低圧域における圧
縮分以上の容量を有する気液低圧容器１０に接続
されており、供給回路１１Ｂにはガス圧圧力調整
器１２、安全弁１３および圧力計１８等が具備さ
れている。 Reference numeral 11 denotes a gas supply means, which is composed of a pump or a compressor, and is connected to a gas-liquid low-pressure container 10 having a capacity greater than that for compressing the pressure medium in the low-pressure region via a supply circuit 11B having a switching valve 11A. The supply circuit 11B is equipped with a gas pressure regulator 12, a safety valve 13, a pressure gauge 18, and the like.
１６は低圧圧力検出器であり、第２低圧切換弁
１４と気液低圧容器１０との間における二次減圧
回路７Ｂに具備されており、この検出器１６の信
号と予じめ設定された減圧プログラムとをアンプ
１７にて比較して圧力調整器１２にてガス圧を制
御すべく連動連結されている。 16 is a low pressure pressure detector, which is provided in the secondary pressure reduction circuit 7B between the second low pressure switching valve 14 and the gas-liquid low pressure container 10, and which detects the signal of this detector 16 and the preset pressure reduction. An amplifier 17 compares the gas pressure with the program and a pressure regulator 12 controls the gas pressure.
なお、図中、Ａはゴム袋に封入されている粉末
体等の被成形材料である。 In addition, in the figure, A is a material to be molded, such as a powder, sealed in a rubber bag.
次に、作用を説明する。 Next, the effect will be explained.
高圧成形容器１に装入されている被成形材料Ａ
は、給水ポンプ９からの圧媒の供給、及び超高圧
発生手段２による昇圧行程等を経て、高圧成形容
器１内にて静水圧加圧によつて等方的な加圧成形
がなされる。 Material to be molded A charged into high-pressure molding container 1
is isotropically pressurized in the high-pressure molding container 1 by isostatic pressurization after the supply of pressure medium from the water supply pump 9 and the pressure increasing process by the ultra-high pressure generating means 2.
加圧成形後にあつては、前記圧媒圧力の減圧を
予じめ設定した減圧速度その他の減圧プログラム
に従つて圧力制御するが、これは次のようにして
なされる。 After pressure molding, the pressure of the pressure medium is controlled in accordance with a preset pressure reduction rate and other pressure reduction programs, and this is done as follows.
高圧域の減圧、すなわち、一次減圧は、機械的
絞り手段４ａ，４ｂの開度調整と高圧圧力検出器
１５の信号により切換弁５ａ，５ｂをオン・オフ
させることによつてなされる。 The pressure reduction in the high pressure region, that is, the primary pressure reduction, is achieved by adjusting the opening of the mechanical throttle means 4a, 4b and turning the switching valves 5a, 5b on and off in response to a signal from the high pressure detector 15.
二次減圧は、減圧切換圧を検出器１５にて検知
し、切換弁５ａ，５ｂおよび切換弁８を封止する
とともに切換弁６を開放することによりなされ
る。 The secondary pressure reduction is performed by detecting the reduced pressure switching pressure with the detector 15, sealing the switching valves 5a, 5b and the switching valve 8, and opening the switching valve 6.
これに先立つて、気体供給手段１１によりガス
を気液低圧容器１０に供給させ、圧力調整器１２
等で該容器１０のガス圧を二次減圧切換圧（例え
ば9.9Kg・ｆ／cm2）に設定してておく。 Prior to this, gas is supplied to the gas-liquid low pressure container 10 by the gas supply means 11, and the pressure regulator 12
The gas pressure in the container 10 is set to the secondary decompression switching pressure (for example, 9.9 Kg·f/cm 2 ).
次いで、第２低圧切換弁１４を開くと低圧圧力
検出器１６に圧媒圧が作用し、その圧力を検出器
１６で検出し、この検出信号と予じめ設定された
減圧速度その他の減圧プログラムとをアンプ１７
にて比較し、ガス圧圧力調整器１２にてガス圧を
例えば1.0Kg・ｆ／cm2程度まで制御し、ここに、
成形圧力を自動制御する。 Next, when the second low pressure switching valve 14 is opened, pressure medium pressure acts on the low pressure pressure detector 16, the pressure is detected by the detector 16, and this detection signal and the preset pressure reduction rate and other pressure reduction programs are and the amplifier 17
The gas pressure is controlled to about 1.0Kg・f/cm 2 using the gas pressure regulator 12, and here,
Automatically controls molding pressure.
検出器１６によつて完了圧を検出すると、切換
弁１４は閉じ切換弁８を開くことにより完全に大
気圧とされる。 When the completion pressure is detected by the detector 16, the switching valve 14 is closed and the switching valve 8 is opened to completely set the pressure to atmospheric pressure.
（発明の効果）
本発明によれば、成形後の一次減圧に引続いて
二次減圧をするに、二次減圧回路には主に10Kg・
ｆ／cm2以下を目的とする気液対向形の気液低圧容
器を設けているので、圧力制御範囲を数10分の１
として制御精度を向上させることができる。(Effects of the Invention) According to the present invention, when performing secondary depressurization following primary depressurization after molding, the secondary depressurization circuit mainly contains 10 kg.
Since we have installed a gas-liquid low-pressure container with a gas-liquid facing type that aims for f/cm 2 or less, the pressure control range can be reduced to several tenths.
As a result, control accuracy can be improved.
また、気液対向形による容器であることから液
圧−油圧対向シリンダの如く摺動部分はなく、ガ
スを制御するものであるから、圧媒のコンタシの
問題もない。 Furthermore, since the container is of the gas-liquid facing type, there are no sliding parts like in a hydraulic-hydraulic facing cylinder, and since the gas is controlled, there is no problem of pressure medium contamination.
更に、二次減圧回路は大口径パイプとして構成
することもでき、配管抵抗（管理抵抗）が少なく
圧力制御精度を向上できる。 Furthermore, the secondary pressure reducing circuit can be configured as a large-diameter pipe, which reduces piping resistance (management resistance) and improves pressure control accuracy.
従つて、成形前にゴム型内を真空引きしなくと
も、1.0Kg・ｆ／cm2まで精度よく圧力制御できて、
その際、成形品の割れ発生を招くおそれもない
等、冷間静水圧加圧装置の減圧制御装置として有
益である。 Therefore, the pressure can be controlled accurately up to 1.0Kg・f/ cm2 without evacuating the inside of the rubber mold before molding.
At that time, there is no risk of causing cracks in the molded product, so it is useful as a pressure reduction control device for a cold isostatic pressurization device.
図面は本発明の実施一例を示す全体構成図であ
る。
１……高圧成形容器、３Ａ……一次減圧回路、
４ａ，４ｂ……機械的絞り手段、７Ｂ……二次減
圧回路、１０……気液低圧容器、１１Ｂ……気体
供給回路、１２……圧力調整器、１６……圧力検
出器。
The drawing is an overall configuration diagram showing an example of the present invention. 1...High pressure molded container, 3A...Primary pressure reduction circuit,
4a, 4b...Mechanical throttle means, 7B...Secondary pressure reducing circuit, 10...Gas-liquid low pressure container, 11B...Gas supply circuit, 12...Pressure regulator, 16...Pressure detector.
Claims (1)
材料Ａを加圧成形するとともに、機械的絞り手段
４ａ，４ｂを具備した一次減圧回路３Ａと二次減
圧回路７Ｂとが前記高圧成形容器１に並列的に接
続されて加圧成形後の圧媒圧力の減圧を予じめ設
定した減圧速度その他の減圧プログラムに従つて
行なう減圧制御装置において、 前記二次減圧回路７Ｂに、切換弁１４を介して
圧媒の低圧域の圧縮分以上の容量を有する気液低
圧容器１０が設けられ、該容器１０と切換弁１４
との間に、圧媒の低圧圧力検出器１６が設けら
れ、更に、前記気液低圧容器１０に、気体を供給
する気体供給回路１１Ｂが設けられ、該気体供給
回路１１Ｂに、前記圧力検出器１６と連動する圧
力調整器１２が具備されていることを特徴とする
冷間静水圧加圧装置における減圧制御装置。[Claims] 1. A material to be molded A is pressure-molded by isostatic pressure in a high-pressure molding container 1, and a primary pressure reduction circuit 3A and a secondary pressure reduction circuit 7B are provided with mechanical squeezing means 4a and 4b. is connected in parallel to the high-pressure molding container 1 and performs pressure reduction of the pressure medium after pressure molding according to a preset pressure reduction rate and other pressure reduction programs, the secondary pressure reduction circuit 7B A gas-liquid low-pressure container 10 having a capacity equal to or larger than that for compressing the low pressure region of the pressure medium is provided via a switching valve 14, and the container 10 and the switching valve 14 are connected to each other.
A low-pressure pressure detector 16 for a pressure medium is provided between the gas-liquid low-pressure container 10, and a gas supply circuit 11B that supplies gas to the gas-liquid low-pressure container 10. 16. A pressure reduction control device for a cold isostatic pressurizing device, characterized in that the pressure regulator 12 is interlocked with the pressure regulator 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61077026A JPS62234694A (en) | 1986-04-02 | 1986-04-02 | Pressure reduction control device for cold isostatic pressurization device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61077026A JPS62234694A (en) | 1986-04-02 | 1986-04-02 | Pressure reduction control device for cold isostatic pressurization device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62234694A JPS62234694A (en) | 1987-10-14 |
| JPH057120B2 true JPH057120B2 (en) | 1993-01-28 |
Family
ID=13622235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61077026A Granted JPS62234694A (en) | 1986-04-02 | 1986-04-02 | Pressure reduction control device for cold isostatic pressurization device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62234694A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH084236Y2 (en) * | 1988-01-27 | 1996-02-07 | 日機装株式会社 | Pressure reducing device for cold isostatic pressing |
-
1986
- 1986-04-02 JP JP61077026A patent/JPS62234694A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62234694A (en) | 1987-10-14 |
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