JPH01258837A - 冷間押出成形によつて金属からなる成形体を製造する方法 - Google Patents

冷間押出成形によつて金属からなる成形体を製造する方法

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Publication number
JPH01258837A
JPH01258837A JP1031260A JP3126089A JPH01258837A JP H01258837 A JPH01258837 A JP H01258837A JP 1031260 A JP1031260 A JP 1031260A JP 3126089 A JP3126089 A JP 3126089A JP H01258837 A JPH01258837 A JP H01258837A
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JP
Japan
Prior art keywords
plunger
metal
metal plate
polytetrafluoroethylene
anodized
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
Application number
JP1031260A
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English (en)
Other versions
JPH0729165B2 (ja
Inventor
Hans-Joachim Tueshaus
ハンス―ヨアヒム・テユスハウス
Michael Hoermann
ミヒヤエル・ヘルマン
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WC Heraus GmbH and Co KG
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WC Heraus GmbH and Co KG
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Publication date
Application filed by WC Heraus GmbH and Co KG filed Critical WC Heraus GmbH and Co KG
Publication of JPH01258837A publication Critical patent/JPH01258837A/ja
Publication of JPH0729165B2 publication Critical patent/JPH0729165B2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
    • C10M107/38—Lubricating compositions characterised by the base-material being a macromolecular compound containing halogen
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/32—Lubrication of metal being extruded or of dies, or the like, e.g. physical state of lubricant, location where lubricant is applied
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    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/02—Compacting only
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  • Other Surface Treatments For Metallic Materials (AREA)
  • Powder Metallurgy (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。

Description

【発明の詳細な説明】 産業上の利用分野： 本発明はタンタル、ニオブの群の１つの金属およびこれ
ら金属の１つをベースとする合金から潤滑剤としてフッ
素含有プラスチックを使用した冷間押出成形によって成
形体を製造する方法に関する。
従来の技術： 雑誌″［Ｔｍｆｏｒｍｔｅｃｈｎｉｋ　１５　（１９８
１）　６＋３１ページ以下”からタンタルの冷開成形加
工すなわち冷間押出成形が公知であり。その利点は材料
損失が小さいことにある。成形は縦形クランクプレスの
４工程で行われる。タンタルは鋼に比して冷間押出成形
の際作用する高い表面圧力のもとに溶着する傾向がある
。通常のＣｒ−冷間加工鋼を使用する際、被加工材のＰ
ＴＦＦｌｉ被覆を含む試験した潤滑剤のいずれによって
も満足な結果は達成されなかった。十分な結果は多数の
手段の組合せによってしか達成されず、これには能動部
分のための他の材料の使用、その付加的表面処理、出発
型の表面処理およびその潤滑剤混合物による潤滑が含ま
れる。これに対し個々にいかなる手段をとったかは詳細
には記載されない。いずれにせよこれによって最適な解
決は達成されなかった。
西独特許第１４　９４　４０２号明細書から低い摩擦係
数を有する保護被覆を製造するための被覆剤が公知であ
る。これは低分子炭化フッ素ポリマーの分散液および少
量の高分子ポリテトラフルオルエチレンを含んでもよい
熱硬化性または熱可塑性樹脂からなる。
発明が解決しようとする課題： 本発明の課題はタンタル、ニオブの群からの１つの金属
およびこれらの金属の１つをベースとする合金から冷間
押出成形によシ成形体を製造する方法を最適にすること
である。
課題を解決するための手段 前記方法に対するこの課題は本発明によって金属板上に
低分子ポリテトラフルオルエチレンを埋蔵した金属酸化
物層またはクロル）　ＩＪフルオルエチレンからなる潤
滑剤フィルムを被覆し、次に金属板を超硬合金プランズ
ヤによシ１工程で逆押出成形によって成形体に加工し、
その際プランジャが膨んだ底面を備えるプランシャヘッ
ドおよびプランジャヘッドからプランジャシャフトへ移
行する範囲に丸くしたアンダーカットを有することによ
って解決される。
作用： この場合金属板を加工前に陽極酸化し、次てポリテトラ
フルオルエチレン含有溶液ヲスプレーシ、溶剤を蒸発さ
せるのが有利なことが明らかになった。とくにポリテト
ラフルオルエチレン含有溶液を陽極酸化してとくに１５
０℃の温度に加熱した金属板ヘスシレーするのが有利で
ある。ポリテトラフルオルエチレン含有溶液として樹脂
溶剤に溶解した微細な低分子ポリテトラフルオルエチレ
ンおよび熱可塑性樹脂の分散液を使用し、陽極酸化して
場合によＱ加熱した金属板ヘスプレーするのが有利なこ
とが実証された。成形にはプランジャヘッドの膨れが２
０〜３０μｍの範囲のプランジャが非常に有効なことが
明らかになった。プランジャの材料としてはとくに炭化
タングステンを埋蔵したコバルト地からなるものが使用
される。
金属板および超硬合金プランジャの浮遊支持をほぼ保証
するトライポロジー系ならびにプランシャヘッドの膨れ
た底面およびプランジャヘッドからプランジャシャフト
への移行部に円味のあるアンダカットを有するプランジ
ャの本発明による使用によってタンタル、ニオブまタハ
これら金属の１つをベースとする合金からなる金属板を
、自動トランスファー成形ラインで、成形部材の著しい
後加工を必要とせずに満足かつ連続的に成形することが
できる。この場合さらに冷間押出成形による成形をただ
の１工程で実施するのが非常に有利である。
実施例： 次に本発明の方法を実施例により詳述する。
まス円筒形タンタルロッドから直径７ＪＩＩ％厚さ６．
５ｍの小板を切取る。脱脂のため多数たとえば２０ＯＯ
個の小板を洗浄剤としてフルオル−クロル−炭化水素た
とえば１，１．２−）！７クロルー１．２．２１！ｊフ
ルオル−エタンを含む常用の超音波洗浄装置へ装入する
。この脱脂工程へドラム内の約１２時間の研摩が続く。
研摩工程は水の添加およびセラミック砥粒の添加のもと
に行われる。
次に研摩した金属小板を超硬合金からなる閉鎖した型内
で平らに圧縮し、それによって金属小板の寸法は直径約
９．６ｒｎｓ厚さ３．６Ｂに変化する。この平板圧縮工
程へ再び前記のような超音波浴中の脱脂および次に約８
時間のみの研摩工程が続く。このように処理したタンタ
ル小板を約１０−５ｍｂａｒの高真空、約１３５０℃の
温度で約１時間再結晶焼鈍する。タンタル小板を室温へ
冷却した後これをクロルトリフルオルエチレンでぬらし
、超硬合金の型へ挿入し、この中で小板をプレスプラン
ジャにより１圧縮工程でカップに冷間押出加工する。プ
レスプランジャヘッドの膨れは２８μｍであり、プレス
プランジャの材料としては地に炭化タングステン粒子ｔ
−埋蔵したコバルトを使用した。
本発明により製造したカップは底の厚さ約０．４７！１
％長さ約１８絽、内径８．７ｍｘ、外径約９．５趨であ
った。カップは後加工の必要かなかった。
この実施例の変化としてトライポロジー系として前記の
ように低分子ポリテトラフルオルエチレンを埋蔵した金
属酸化物層を使用することもできる。このトライポロジ
ー系の製造は前記例の再結晶工程へ続く。そのためタン
タル小板を湯極としてリン酸溶液中へ１５〜３０分間浸
漬する。次に酸化したタンタル小板を蒸留水で洗い、乾
燥後ポリテトラフルオルエチレン含有溶液でぬらし、溶
剤を約１５０℃で蒸発させる。
これに前記のように冷間押出成形が続く。

Claims (1)

  1. 【特許請求の範囲】 １、タンタル、ニオブの群からの１つの金属およびこれ
    ら金属の１つをベースとする合金から潤滑剤としてフッ
    素含有プラスチックを使用して冷間押出成形によつて成
    形体を製造する方法において、金属板上に低分子ポリテ
    トラフルオルエチレンを埋蔵した金属酸化物層またはク
    ロル−トリフルオル−エチレンからなる潤滑剤フィルム
    を被覆し、次に金属小板を超硬合金プランジャを使用し
    て１工程で逆押出成形により成形体に冷間加工し、その
    際プランジャが膨れた底面を備えるプランジャヘッドお
    よびプランジャヘッドからプランジャシャフトへの移行
    部の範囲に円味のあるアンダーカットを有することを特
    徴とする冷間押出成形によつて金属から成形体を製造す
    る方法。 ２、金属小板を加工前に陽極酸化し、次にポリテトラフ
    ルオルエチレン含有溶液をスプレーし、溶剤を蒸発させ
    る請求項１記載の方法。 ３、ポリテトラフルオルエチレン含有溶液を陽極酸化し
    て加熱した金属小板へスプレーする請求項２記載の方法
    。 ４、陽極酸化した金属小板を約１５０℃に加熱する請求
    項３記載の方法。 ５、微細な低分子ポリテトラフルオルエチレンおよび熱
    可塑性樹脂の樹脂溶剤に溶解した分散液を陽極酸化した
    金属小板へスプレーする請求項２から４までのいずれか
    １項記載の方法。 ６、金属小板をヘッドの膨れが２０〜３０μｍの範囲に
    あるプランジャにより加工する請求項１から５までのい
    ずれか１項記載の方法。 ７、コバルトの地へ炭化タングステンの粒子を埋蔵した
    コバルトからなるプランジャを使用する請求項１から６
    までのいずれか１項記載の方法。
JP1031260A 1988-02-13 1989-02-13 冷間押出成形によつて金属からなる成形体を製造する方法 Expired - Lifetime JPH0729165B2 (ja)

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DE3804567A DE3804567C1 (ja) 1988-02-13 1988-02-13

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EP (1) EP0328732B1 (ja)
JP (1) JPH0729165B2 (ja)
AT (1) ATE92546T1 (ja)
DE (2) DE3804567C1 (ja)

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Publication number Priority date Publication date Assignee Title
US5013409A (en) * 1989-03-23 1991-05-07 Doug Czor Electrodeposition process
US5307660A (en) * 1992-08-06 1994-05-03 Acheson Industries, Inc. New water based lubricant composition for cold impact extrusion of spark plug bodies or other metal parts and process
KR100405290B1 (ko) * 1994-10-13 2004-02-05 룩스퍼 그룹 리미티드 후방압출방법및제품
US6142001A (en) * 1999-06-09 2000-11-07 The Boc Group, Inc. Cylindrical shell for use in gas cylinder fabrication
AR032233A1 (es) * 2002-01-09 2003-10-29 Maria Eugenia Barrera Un procedimiento para conformar un envase de alta resistencia, particularmente un envase para aerosoles y a un envase obtenido mediante dicho procedimiento
JP5325034B2 (ja) * 2009-07-08 2013-10-23 理研精工株式会社 ホイールナットレンチ並びにその製造方法
US9700925B2 (en) * 2015-11-04 2017-07-11 Vahid Shatermashhadi System and method for hydrostatic backward extrusion

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US3293203A (en) * 1962-03-26 1966-12-20 Acheson Ind Inc Thermosettable resin compositions and method for forming low friction surface coatings
US3255621A (en) * 1963-08-16 1966-06-14 Haveg Industries Inc Lubrication
US3335073A (en) * 1963-12-27 1967-08-08 Gen Electric Method of making anodized tantalum foil
FR2067226A1 (ja) * 1969-11-27 1971-08-20 Cefilac
DE2635342C2 (de) * 1976-08-03 1981-09-24 Mannesmann AG, 4000 Düsseldorf Presse zum Warmlochen eines Metallblockes
DD231928A3 (de) * 1983-12-16 1986-01-15 Eberhard Schlowag Ausbildung von werkzeug-/werkstueckgrenzflaechen und wirkfugen zum kaltmassivumformen von tantal
JPH05156760A (ja) * 1991-12-06 1993-06-22 Fuji Plant Kogyo Kk 屋根の除雪装置

Also Published As

Publication number Publication date
US4876868A (en) 1989-10-31
DE3804567C1 (ja) 1989-05-11
ATE92546T1 (de) 1993-08-15
EP0328732A1 (de) 1989-08-23
EP0328732B1 (de) 1993-08-04
JPH0729165B2 (ja) 1995-04-05
DE3882963D1 (de) 1993-09-09

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