JPS63266007A - Production of cylinder with lining - Google Patents
Production of cylinder with liningInfo
- Publication number
- JPS63266007A JPS63266007A JP9866987A JP9866987A JPS63266007A JP S63266007 A JPS63266007 A JP S63266007A JP 9866987 A JP9866987 A JP 9866987A JP 9866987 A JP9866987 A JP 9866987A JP S63266007 A JPS63266007 A JP S63266007A
- Authority
- JP
- Japan
- Prior art keywords
- hole
- metal powder
- lining
- metal
- cylinder body
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 229910052751 metal Inorganic materials 0.000 claims abstract description 52
- 239000002184 metal Substances 0.000 claims abstract description 52
- 239000000463 material Substances 0.000 claims abstract description 45
- 239000000843 powder Substances 0.000 claims abstract description 26
- 238000007789 sealing Methods 0.000 claims abstract description 19
- 238000005245 sintering Methods 0.000 claims abstract description 9
- 238000003754 machining Methods 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 7
- 238000005520 cutting process Methods 0.000 claims description 3
- 238000005304 joining Methods 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 230000007797 corrosion Effects 0.000 abstract description 3
- 238000005260 corrosion Methods 0.000 abstract description 3
- 229910000831 Steel Inorganic materials 0.000 abstract description 2
- VNTLIPZTSJSULJ-UHFFFAOYSA-N chromium molybdenum Chemical compound [Cr].[Mo] VNTLIPZTSJSULJ-UHFFFAOYSA-N 0.000 abstract description 2
- 239000010959 steel Substances 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 abstract 4
- 230000000149 penetrating effect Effects 0.000 abstract 2
- 238000001513 hot isostatic pressing Methods 0.000 abstract 1
- 238000000462 isostatic pressing Methods 0.000 abstract 1
- 238000012856 packing Methods 0.000 abstract 1
- 238000013022 venting Methods 0.000 abstract 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 238000001816 cooling Methods 0.000 description 3
- 238000007872 degassing Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000001307 helium Substances 0.000 description 2
- 229910052734 helium Inorganic materials 0.000 description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- -1 etc. Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
Landscapes
- Powder Metallurgy (AREA)
Abstract
Description
【発明の詳細な説明】
（イ）産業上の利用分野
本発明は、ライニング付きシリンダの製造方法に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to a method of manufacturing a lined cylinder.
（ロ）従来の技術
樹脂加工機のシリンダの耐食・耐摩耗性を向上するため
にライニング層を設ける場合かある。このようなライニ
ング層を設けたシリンダは、特にセラミックス、ガラス
繊維、アスベストなどを混合した樹脂又はこれらに難燃
剤を添加した樹脂などを処理するために必要である。押
出成形機用二軸シリンダにライニング層を設ける方法と
し゛Ｃ１例えば特開昭６１−１５４７５６号公報に示さ
れるものがある。すなわち、シリンダ胴粗材の４通穴内
に、貫通穴よりも小径の中子を設け、これらによって形
成されるすきまにライニング材である耐食・耐摩耗性合
金を溶湯状態として注入する。(b) Conventional technology In order to improve the corrosion resistance and wear resistance of the cylinder of a resin processing machine, a lining layer is sometimes provided. A cylinder provided with such a lining layer is especially necessary for processing resins mixed with ceramics, glass fibers, asbestos, etc., or resins to which flame retardants are added. As a method for providing a lining layer on a twin-screw cylinder for an extrusion molding machine, there is a method disclosed in JP-A-61-154756, for example. That is, cores having a smaller diameter than the through holes are provided in the four through holes of the cylinder body rough material, and a corrosion-resistant and wear-resistant alloy, which is a lining material, is injected in a molten state into the gap formed by these cores.
ライニング材が凝固することによりライニング層が得ら
れる。A lining layer is obtained by solidifying the lining material.
（ハ）発明が解決しようとする問題点
しかし上記のような方法には、ライニング材の歩留まり
が悪く、また加工工数が多くかかり、製造価格が高くな
るという問題点がある。すなわち、ライニング材の溶湯
を注入して健全なライニング層を得るためには、中子の
径を小さくして十分なライニング層の厚さを確保し、ラ
イニング層の健全でない部分を機械加工によって除去す
ることが必要となる。また、シリンダ胴粗材の軸方向寸
法が大きくなればなるほどライニング層の健全性を確保
するために押湯部分を大きくする必要があり、この点で
もライニング材の使用量が増大する。(c) Problems to be Solved by the Invention However, the above method has problems in that the yield of the lining material is poor, the number of processing steps is large, and the manufacturing cost is high. In other words, in order to obtain a healthy lining layer by injecting the molten metal of the lining material, the diameter of the core must be made small to ensure a sufficient thickness of the lining layer, and the unsound parts of the lining layer must be removed by machining. It is necessary to do so. Furthermore, as the axial dimension of the cylinder body material increases, the feeder portion must be made larger to ensure the integrity of the lining layer, and the amount of lining material used also increases in this respect.
なお、このような問題点を解決するために、本出願人は
特願昭６１−２６５５４１号において、シリンダ胴粗材
の貫通穴と中子との間に金属粉末を充てんし、金属粉末
を加熱することにより溶融させ、次いで冷却凝固させる
方法を示した。しかし、この方法の場合も、金属粉末を
溶融させる際に引けが発生するので、上記従来技術より
も減少するとはいえ、押湯が必要である。また、凝固の
際には底部側から徐々に凝固させて健全なう２ｒニング
層ケ１：するようにするのであるが、凝固速度の制御に
注意が必要であり、この制御が不十分な場合には組織が
不均質なものとなる。本発明は、このような問題点を解
決することを目的としている。In order to solve these problems, the present applicant, in Japanese Patent Application No. 61-265541, filled the space between the through hole of the cylinder body material and the core with metal powder, and heated the metal powder. A method was shown in which the material is melted by cooling and then solidified by cooling. However, even in this method, shrinkage occurs when melting the metal powder, so a riser is required, although the shrinkage is reduced compared to the above-mentioned conventional technique. In addition, during solidification, solidification is performed gradually from the bottom side to form a healthy 2r layer, but care must be taken to control the solidification rate, and if this control is insufficient, The organization becomes heterogeneous. The present invention aims to solve these problems.
（ニ）問題点を解決するための手段
本発明は、シリンダ１１Ｍ粗材の貫通穴と中空の金属製
インサートとの間のすきまに焼結用金属粉末を充てんし
、これを熱間静水圧処理によって焼結させることにより
、上記問題点を解決する。すなわち、本発明によるライ
ニング付きシリンダの製造方法は、シリンダ胴粗材に軸
方向の貫通穴を設け、貫通穴内にライニング層の形状に
対応した内外周形状を有する中空の金属製インサートを
設置し、貫通穴と金属製インサートの外周との間に形成
されるすきまに焼結用金属粉末を充てんすると共にシリ
ンダ胴粗材両端に密封用板材を接合することにより金属
粉末充てん部を密封し、次いで熱間静水圧処理を施すこ
とによって金属粉末を焼結させてシリンダ胴粗材と一体
化し、次いで金属製インサート及び密封用板材を機械加
工によって除去することにより、シリンダ胴粗材の貝通
穴内面にライニング層を形成する。(d) Means for solving the problem The present invention fills the gap between the through hole of the cylinder 11M rough material and the hollow metal insert with metal powder for sintering, and then performs hot isostatic pressure treatment. The above-mentioned problems are solved by sintering. That is, the method for manufacturing a lined cylinder according to the present invention includes providing an axial through hole in the cylinder body material, installing a hollow metal insert having an inner and outer peripheral shape corresponding to the shape of the lining layer in the through hole, The gap formed between the through hole and the outer periphery of the metal insert is filled with metal powder for sintering, and the metal powder-filled part is sealed by joining sealing plates to both ends of the cylinder body material, and then heated. The metal powder is sintered and integrated with the cylinder body material by isostatic pressure treatment, and then the metal insert and sealing plate are removed by machining to form the inner surface of the shell hole in the cylinder body material. Form a lining layer.
（ホ）作用
シリンダ胴粗材と金属製インサートとの間に形成される
すきまに焼結可能なライニング材の金属粉末を充てんし
、密封後熱間静水圧処理、すなわち不活性ガス圧カドで
加熱する処理、をする。これにより金属粉末は焼結され
、組織が均質でかつ高密度のライニング層を得ることが
できる。組織は均質であるため、金属製インサート設定
時の誤差などを吸収するための加工代だけを見込んたＪ
’Ｊさとすることかでき、また押湯が不必要となるので
ライニング材の使用量が大幅に減少する。(E) Function The gap formed between the cylinder body material and the metal insert is filled with metal powder of sinterable lining material, and after sealing, hot isostatic treatment is performed, that is, heating with an inert gas pressure chamber. Do the processing to do. As a result, the metal powder is sintered, and a lining layer with a homogeneous structure and high density can be obtained. Since the structure is homogeneous, J
'J', and since a feeder is not required, the amount of lining material used is greatly reduced.
なお、ライニング材の残留酸素量などを減少させたい場
合には、金属粉末を密封する前に覗見を行えばよい。In addition, if it is desired to reduce the amount of residual oxygen in the lining material, it is sufficient to inspect the metal powder before sealing it.
（へ）実施例
第１及び２図に本発明の実施例を示す。外径１２０ｍｍ
及び長さ２５０ ｍｍの中空円柱のクロムモリブデン鋼
鍛造材製のシリンダ胴粗材１０の中心部に貫通穴１２を
設ける。貫通穴１２は２つの円形の穴が外径部で互いに
重なり合うようにしたものである。すなわち、直径５０
ｍｍの穴を２つ中心部＠３０ｍｍであける。シリンダ胴
粗材１０の貫通穴１２内に中空の金属製インサート１８
を設置する。金属製インサート１８は貫通穴１２の内径
部との間に一定のすきまを形成する形状としてあり、所
定の肉厚をイ］する中空のものである。(F) Embodiment Figures 1 and 2 show an embodiment of the present invention. Outer diameter 120mm
A through hole 12 is provided in the center of a hollow cylindrical cylinder body material 10 made of forged chromium molybdenum steel with a length of 250 mm. The through hole 12 is formed by two circular holes overlapping each other at the outer diameter portion. That is, the diameter is 50
Drill two mm holes at the center @30mm. Hollow metal insert 18 in through hole 12 of cylinder body material 10
Set up. The metal insert 18 is shaped to form a certain gap with the inner diameter of the through hole 12, and is hollow and has a predetermined wall thickness.
すなわち、金属製インサート１８は、板厚２ｍｍ、外径
４５ｏ＋ｍ及び長さ２８０ ｍ＋ｎの２本の軟ｌＡ製バ
イブを軸方向に切断し、これらを中心距離間が３０＋ｎ
ｍとなるように互いに切断面側で接合した形状としであ
る。このような金属製インサート１８を貫通穴１２内に
設置することにより第２図に示すような５［ＩＩｍのす
きま２２を形成する。シリンダ胴粗材１０の底面側には
外径１２０ｎｍ及び厚さ３ｍｍの密封用板材１６を溶接
により接合する。密封用板材１６は金属製インサート１
８の外形に対応した穴を有し・ており、この穴に挿入さ
れた金属製インサート１８とも溶接により接合する。こ
の状態ですきま２２の−Ｆ部から５ＨＫ５１の金属粉末
を充てんした。金属粉末を充てんした後、密封用板材２
４によってずきま２２の上部を密封した。That is, the metal insert 18 is made by cutting two soft aluminum vibrators with a plate thickness of 2 mm, an outer diameter of 45 m + m, and a length of 280 m + n in the axial direction, and then cutting them together with a center distance of 30 m + n.
The shapes are such that they are joined to each other on the cut surface side so that the shape is m. By installing such a metal insert 18 in the through hole 12, a gap 22 of 5[IIm] as shown in FIG. 2 is formed. A sealing plate material 16 having an outer diameter of 120 nm and a thickness of 3 mm is joined to the bottom side of the cylinder body material 10 by welding. The sealing plate 16 is a metal insert 1
8, and a metal insert 18 inserted into this hole is also joined by welding. In this state, the −F portion of the gap 22 was filled with 5HK51 metal powder. After filling with metal powder, sealing plate material 2
4, the upper part of the groove 22 was sealed.
密封用板材２４は密封用板材１６と同様のものであり、
シリンダ胴粗材１０及び金属製インサート１８と溶接し
た。なお、密封用板材２４には、あらかじめ脱気管２５
を設けである。すなわち、密封用板材２４に直径５ｍｍ
の穴をあけ、ここに外径５ｍｍ、肉厚１＋ｎｍ及び長さ
１５０＋＋＋ｏ＋の軟鋼管を溶接しておく。脱気管２５
はすきま２２に連通する位置に設けである。次いで、脱
気管２５から５ｋｇ／ＣＩＩ＋２の圧力のヘリウムガス
を充てんし、ヘリウム検出器で洩れのないことを確認し
た。The sealing plate material 24 is similar to the sealing plate material 16,
The cylinder body material 10 and the metal insert 18 were welded. Note that the sealing plate 24 is provided with a deaeration pipe 25 in advance.
This is provided. That is, the sealing plate 24 has a diameter of 5 mm.
A hole is made, and a mild steel pipe with an outer diameter of 5 mm, a wall thickness of 1+ nm, and a length of 150+++o+ is welded therein. Deaeration pipe 25
is provided at a position communicating with the gap 22. Next, the degassing pipe 25 was filled with helium gas at a pressure of 5 kg/CII+2, and it was confirmed with a helium detector that there was no leakage.
次いで、脱気管２５に真空ポンプを接続し、１０−’ｍ
ｍＨｇまで脱気し、この状態のまま加熱炉中に入れ、５
００℃まで加熱しつつ脱気した。この状態で脱気管２５
を鍛接して封止する。次いで、熱間静水圧処理炉中に設
置して熱間静水圧処理をした。処理条件は１１５０℃及
び１２００気圧で１時間とした。次いで、冷却し、金属
製インサート１８、及び密封用板材１６及び２４を機械
加工によって除去することによりライニング層を形成し
た２孔シリンダを得ることかできた。Next, connect a vacuum pump to the degassing pipe 25 and
Degas to mHg, place in a heating furnace in this state, and heat for 5 minutes.
It was degassed while heating to 00°C. In this state, the degassing pipe 25
Forge weld and seal. Next, it was placed in a hot isostatic pressure treatment furnace and subjected to hot isostatic pressure treatment. The treatment conditions were 1150° C. and 1200 atm for 1 hour. Then, by cooling and removing the metal insert 18 and the sealing plates 16 and 24 by machining, it was possible to obtain a two-hole cylinder with a lining layer formed thereon.
このようにして得られるライニング層は金属粉末を焼結
させたものであるため、組織は非常に均質でしかも相対
密度はほぼ１００％である。このため、ライニング層の
加工代は金属製インサート１８を設置する際の誤差など
を吸収するだけのものでよく、ライニング材の歩留まり
は非常に高いものとなる。また、焼結後の機械加工は中
空の金属製インサート１８の除去、及び密封用板材１６
及び２４の除去だけでよく、簡単で経済的である。また
、金属製インサート１８の材料も少なくて済む。Since the lining layer thus obtained is made by sintering metal powder, the structure is very homogeneous and the relative density is approximately 100%. Therefore, the machining allowance for the lining layer is sufficient to absorb errors when installing the metal insert 18, and the yield of the lining material is extremely high. In addition, machining after sintering involves removing the hollow metal insert 18 and sealing plate 16.
It is simple and economical, since only 24 and 24 need to be removed. Also, less material is required for the metal insert 18.
なお、上記実施例では金属粉末の充てん後脱気を行った
が、脱気を省略することもできる。脱気処理を行わない
場合には残留空気によってライニング材中の酸素量が３
０〜１００ ｐｐｍ増加する。In the above embodiment, deaeration was performed after filling with metal powder, but deaeration may be omitted. If deaeration treatment is not performed, the amount of oxygen in the lining material will decrease by 3% due to residual air.
Increases from 0 to 100 ppm.
従って、もともと含有酸素量が多い材料などのように多
少の酸素量の増加が問題とならない場合には脱気を行う
必要性が乏しい。しかし、金属粉末中の酸素が２０ ｐ
ｐｍ程度の場合には上述の実施例のように脱気を行って
機械的性質の低下を防止する必要がある。Therefore, in cases where a slight increase in the amount of oxygen does not pose a problem, such as with materials that originally contain a large amount of oxygen, there is little need to perform deaeration. However, the oxygen in the metal powder is 20p
If the temperature is around pm, it is necessary to perform deaeration as in the above embodiment to prevent deterioration of mechanical properties.
なお、この実施例は２孔の一シリンダについて説明した
が、１孔のもの又は３孔以上のものであっても本発明を
適用することができる。また、シリンダ胴粗材１０及び
金属製インサート１８は熱間静水圧処理の際の品温・高
圧に耐えられるものであればどのような材料であっても
差し支えなし１゜（ト）発明の詳細
な説明してきたように、本発明によると、シリンダ胴粗
材と金属製インサートとの間のすきまに金属粉末を充て
んし、これを焼結させることによりライニング層を形成
するようにしたので、均質で高密度なライニング層を得
ることができ、しかもライニング層のための金属粉末の
使用ｆｉｔを減少させることができる。また金属製イン
サートは中空であるので、これの材料費及び加工費を減
少させることができる。Although this embodiment has been described with respect to a cylinder with two holes, the present invention can also be applied to a cylinder with one hole or a cylinder with three or more holes. Further, the cylinder body rough material 10 and the metal insert 18 may be made of any material as long as it can withstand the product temperature and high pressure during hot isostatic pressure treatment.1゜(g) Details of the invention As explained above, according to the present invention, the gap between the cylinder body rough material and the metal insert is filled with metal powder, and the lining layer is formed by sintering this, so that the lining layer is uniform. It is possible to obtain a high-density lining layer and also to reduce the amount of metal powder used for the lining layer. Also, since the metal insert is hollow, the material and processing costs can be reduced.
第１図は本発明の実施例を示す図、第２図は第１図のＩ
Ｉ−ＩＩ線に沿う断面図である。
１０・・・シリンダ胴粗材、１２・・・ｖＩ通穴、１８
・・・金属製インサート、２２・・・すきま。FIG. 1 is a diagram showing an embodiment of the present invention, and FIG. 2 is a diagram showing an embodiment of the present invention.
It is a sectional view along the I-II line. 10... Cylinder body rough material, 12... vI through hole, 18
...Metal insert, 22...Gap.
Claims (1)
にライニング層の形状に対応した内外周形状を有する中
空の金属製インサートを設置し、貫通穴と金属製インサ
ートの外周との間に形成されるすきまに焼結用金属粉末
を充てんするとともにシリンダ胴粗材両端に密封用板材
を接合することにより金属粉末充てん部を密封し、次い
で熱間静水圧処理を施すことによって金属粉末を焼結さ
せてシリンダ胴粗材と一体化し、次いで金属製インサー
ト及び密封用板材を機械加工によって除去することによ
り、シリンダ胴粗材の貫通穴内面にライニング層を形成
するライニング付きシリンダの製造方法。 ２、貫通穴は２つの円形穴を互いに平行にこれらの外径
が重なり合うように設けたものであり、金属製インサー
トは円筒部材を軸方向に切断したものを２つ互いに切断
面側で接合した形状のものである特許請求の範囲第１項
記載のライニング付きシリンダの製造方法。 ３、シリンダ胴粗材の貫通穴と金属製インサートとの間
のすきまに金属粉末を充てんした後密封用板材によって
密封する前に、金属粉末充てん部を脱気する特許請求の
範囲第１又は２項記載のライニング付きシリンダの製造
方法。[Claims] 1. A through hole in the axial direction is provided in the cylinder body material, a hollow metal insert having an inner and outer peripheral shape corresponding to the shape of the lining layer is installed in the through hole, and the through hole and the metal insert are installed. The gap formed between the outer periphery of the insert is filled with metal powder for sintering, and sealing plates are joined to both ends of the cylinder body material to seal the metal powder filled part, followed by hot isostatic pressure treatment. The lining is formed by sintering the metal powder and integrating it with the cylinder body blank material by applying it, and then by removing the metal insert and sealing plate material by machining, a lining layer is formed on the inner surface of the through hole of the cylinder body blank material. Manufacturing method for cylinders with 2. The through hole is two circular holes made parallel to each other so that their outer diameters overlap, and the metal insert is made by cutting a cylindrical member in the axial direction and joining them together on the cut side. A method for manufacturing a lined cylinder according to claim 1, wherein the lined cylinder has a shape. 3. After filling the gap between the through hole of the cylinder body material and the metal insert with metal powder, the metal powder filled part is degassed before being sealed with a sealing plate material. A method for producing a lined cylinder as described in Section 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9866987A JPH0751722B2 (en) | 1987-04-23 | 1987-04-23 | Manufacturing method of cylinder with lining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9866987A JPH0751722B2 (en) | 1987-04-23 | 1987-04-23 | Manufacturing method of cylinder with lining |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63266007A true JPS63266007A (en) | 1988-11-02 |
| JPH0751722B2 JPH0751722B2 (en) | 1995-06-05 |
Family
ID=14225921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9866987A Expired - Fee Related JPH0751722B2 (en) | 1987-04-23 | 1987-04-23 | Manufacturing method of cylinder with lining |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0751722B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999037426A1 (en) * | 1998-01-27 | 1999-07-29 | ALBANO-MÜLLER, Lothar | Method for producing a metallic shaped part made of a metallic granulate by hot pressing |
-
1987
- 1987-04-23 JP JP9866987A patent/JPH0751722B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999037426A1 (en) * | 1998-01-27 | 1999-07-29 | ALBANO-MÜLLER, Lothar | Method for producing a metallic shaped part made of a metallic granulate by hot pressing |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0751722B2 (en) | 1995-06-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |