JPH0759346B2 - 低圧鋳造用粉末離型剤 - Google Patents

低圧鋳造用粉末離型剤

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Publication number
JPH0759346B2
JPH0759346B2 JP3067976A JP6797691A JPH0759346B2 JP H0759346 B2 JPH0759346 B2 JP H0759346B2 JP 3067976 A JP3067976 A JP 3067976A JP 6797691 A JP6797691 A JP 6797691A JP H0759346 B2 JPH0759346 B2 JP H0759346B2
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JP
Japan
Prior art keywords
release agent
mold release
pressure casting
low pressure
base material
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
Application number
JP3067976A
Other languages
English (en)
Other versions
JPH04279244A (ja
Inventor
孝 花野
Original Assignee
花野商事株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 花野商事株式会社 filed Critical 花野商事株式会社
Priority to JP3067976A priority Critical patent/JPH0759346B2/ja
Priority to CA002041503A priority patent/CA2041503A1/en
Priority to DE4116260A priority patent/DE4116260A1/de
Priority to KR1019910008264A priority patent/KR940009799B1/ko
Priority to GB9111497A priority patent/GB2253408A/en
Publication of JPH04279244A publication Critical patent/JPH04279244A/ja
Priority to US07/975,956 priority patent/US5277831A/en
Publication of JPH0759346B2 publication Critical patent/JPH0759346B2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
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    • C10M111/00—Lubrication compositions characterised by the base-material being a mixture of two or more compounds covered by more than one of the main groups C10M101/00 - C10M109/00, each of these compounds being essential
    • C10M111/04—Lubrication compositions characterised by the base-material being a mixture of two or more compounds covered by more than one of the main groups C10M101/00 - C10M109/00, each of these compounds being essential at least one of them being a macromolecular organic compound
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C3/00—Selection of compositions for coating the surfaces of moulds, cores, or patterns
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    • C10M105/08—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing oxygen
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    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
    • C10M2229/04—Siloxanes with specific structure
    • C10M2229/05—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon
    • C10M2229/054—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon containing phosphorus
    • C10M2229/0545—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon containing phosphorus used as base material
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2010/00—Metal present as such or in compounds
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2010/00—Metal present as such or in compounds
    • C10N2010/02—Groups 1 or 11
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2010/00—Metal present as such or in compounds
    • C10N2010/04—Groups 2 or 12
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/20—Metal working

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mold Materials And Core Materials (AREA)
  • Lubricants (AREA)

Description

【発明の詳細な説明】
【０００１】
【産業上の利用分野】本発明は、低圧鋳造の作業におい
て金型内面に吹付けて用いる離型剤に関するものであ
る。
【０００２】
【従来の技術】低圧鋳造法は高精度の鋳造品を連続して
且つ大量に製造できるので、自動車や電気機器等の各種
部品の製造に多く利用されている。そしてこの低圧鋳造
法においては、成形型の金型と溶湯との直接接触を避け
て焼付を防止し製品の型離れを良くするために離型剤が
用いられている。
【０００３】低圧鋳造用離型剤は一般に水溶性離型剤と
不水溶性離型剤とに大別される。そして不水溶性離型剤
は発煙、引火性の危険性が高く安全性に問題があるた
め、水溶性離型剤が多用されている。水溶性離型剤は一
般に、水、鉱物油等の離型剤基材に、界面活性剤や極圧
性付与剤として用いられるシリコ―ンオイル、合成又は
天然のワックス、油脂類、脂肪酸エステル等が添加され
てなるものである。
【０００４】
【発明が解決しようとする問題点】ところで近年、低圧
鋳造技術の進歩に伴ってより高品質の製品をより作業性
良く得るための離型剤が要望されるようになってきた。
そして水溶性離型剤ではそのような要望を満足させられ
なくなってきた。即ち水溶性離型剤では、水溶性である
ために金型温度のコントロ―ルが困難であり、また水残
りに起因して製品内部に欠陥が生じる可能性が高いとい
う問題があった。更に使用後の水質汚濁防止のために廃
水処理を必要としそのための設備投資等の諸経費を必要
とするという問題があった。そこで新しい形態の離型剤
が強く望まれるようになってきた。
【０００５】本発明は以上のような点に鑑みて鋭意研究
し各種の系統的実験を行なった結果なされたもので、低
圧鋳造法においてより高品質の鋳造品をより作業性良く
且つ環境を悪化させることなく得るために用いられる低
圧鋳造用離型剤、即ち具体的には製品の焼付や内部欠陥
の発生を確実に防止でき、しかも製品の金型からの型離
れをより良好に行なわせることができ、また使用後に金
型内面や製品表面から取除き易く、更には使用中のガス
の発生が少なく、使用後に水質を汚染することのない低
圧鋳造用離型剤を提供することを目的とする。
【０００６】
【問題点を解決するための手段】本発明は、低圧鋳造の
作業において金型内面に吹付けて用いる離型剤におい
て、固体で潤滑剤として用いられる無機化合物からなる
粉末状又は顆粒状の離型剤基材と、離型剤基材に付着性
を付与する有機化合物とを混合してなり、両者とも粉末
状又は顆粒状の形態を有し、又は離型剤基材が有機化合
物により被覆された形態を有することを特徴とする低圧
鋳造用粉末離型剤である。
【０００７】本発明の最大の特徴は、離型剤基材が粉末
状又は顆粒状の形態を有することである。
【０００８】そして有機化合物の無機化合物に対する含
有割合は０．１〜４５重量％の範囲から選択するのが有
効である。０．１重量％より小さいと無機化合物の金型
内面に対する付着効果が充分には得られず、４５重量％
より大きいとビルトアップが発生し、離型剤が金型内面
から取除きにくくなったり即ち離型効果が悪くなったり
製品の寸法精度が悪くなったりするからである。
【０００９】本発明で用い得る離型剤基材は、固体で潤
滑剤として用いられる無機化合物であれば特に制限はな
い。一般には窒化ホウ素、雲母、金属酸化物、窒化ケイ
素、硫黄化合物、弗化物、タルク、ホウ素化合物、リン
化合物が好ましく用いられるが、その他従来から離型剤
として用いられている公知の固体潤滑剤、例えば二硫化
モリブデン、グラファイト等も用いることができる。そ
してこれらの無機化合物は粉末状又は顆粒状の形態で、
その１種類のみが、又は２種類以上が組合せて用いられ
る。
【００１０】また本発明で用い得る有機化合物は、上述
のような無機化合物に付着性、接着性を付与する性質を
有するものであれば、特に制限はない。一般には金属石
鹸や高分子化合物が好ましく用いられる。金属石鹸とし
てはカルボン酸骨格にナトリウム、カルシウム、バリウ
ム、リチウム、カリウム、マグネシウム、又は亜鉛を付
加したものが、また高分子化合物としてはポリエチレ
ン、ポリプロピレン、エポキシ樹脂、ケイ素樹脂、フェ
ノ―ル樹脂、アクリル樹脂、アルキッド樹脂、又はポリ
スチレンが特に好ましく用いられる。そしてこれらの有
機化合物は、粉末状又は顆粒状の形態で離型剤基材と混
合され、又は加熱溶融された状態で離型剤基材と混合さ
れる。従って本発明の離型剤は、離型剤基材と有機化合
物の両方が粉末状又は顆粒状の形態を有し、又は粉末状
又は顆粒状の離型剤基材が有機化合物により被覆された
形態を有することとなる。なお有機化合物は、上述した
化合物の１種類のみが、又は２種類以上が組合せて用い
られる。金属石鹸と高分子化合物とを組合せて用いても
よい。
【００１１】
【作用】本発明の低圧鋳造用粉末離型剤は少なくとも離
型剤基材が粉末状又は顆粒状の形態を有しているので、
離型剤が付着された金型内面の部分では製品と金型内面
とが確実に少なくとも離型剤基材の粉末又は顆粒の粒子
径だけ隔てられることとなる。従って離型剤が金型内面
にまんべんなく付着されることにより、製品と金型内面
とが直接に接触することによる焼付は確実に防止され
る。また本発明の離型剤は有機化合物と無機化合物とか
らなり水分を含有してはいないので、製品内部に水残り
に起因する欠陥が発生することもない。従って製品の品
質は向上することとなる。
【００１２】また本発明の離型剤は少なくとも離型剤基
材が粉末状又は顆粒状の形態を有し、水分を含有しては
いないので、金型内面と製品との間で働く張力は弱い。
従って製品の金型からの取出しは容易となる。しかも金
型内面及び製品表面から容易に取除かれる。
【００１３】更に本発明の離型剤は少なくとも離型剤基
材が粉末状又は顆粒状の形態を有しているので、低圧鋳
造中に熱が加わっても反応しにくくガスを殆んど発生し
ない。また水溶性離型剤のように使用後に水質を汚染す
ることもない。従って作業場の環境を悪化させることは
なく、また廃水処理のための経費が不要となり安価に用
いられることとなる。
【００１４】
【発明の効果】本発明によれば無機化合物からなる離型
剤基材と有機化合物との混合物からなる低圧鋳造用離型
剤を、少なくとも離型剤基材が粉末状又は顆粒状の形態
を有するものとしたので、低圧鋳造法により得られる例
えばアルミニウム合金や亜鉛合金等の鋳造品の焼付や内
部の欠陥発生を確実に防止してその品質を向上させるこ
とができ、しかも低圧鋳造法による鋳造をより作業性良
く行なわせることができ、更には使用中及び使用後にお
ける環境の悪化を充分に防止することができる。特に有
機化合物の無機化合物に対する含有割合を０．１〜４５
重量％の範囲とすることにより、得られる鋳造品の品質
をより良好なものにすることができる。更に無機化合物
として、窒化ホウ素、雲母、金属酸化物、窒化ケイ素、
硫黄化合物、弗化物、タルク、ホウ素化合物、リン化合
物を、また有機化合物として、カルボン酸骨格にナトリ
ウム、カルシウム、バリウム、リチウム、カリウム、マ
グネシウム、又は亜鉛を付加してなる金属石鹸や、ポリ
エチレン、ポリプロピレン、エポキシ樹脂、ケイ素樹
脂、フェノ―ル樹脂、アクリル樹脂、アルキッド樹脂、
又はポリスチレンの高分子化合物を用いることにより上
記効果をより良好に発揮することができる。そして上記
の無機化合物、有機化合物の内、それぞれ２種類以上の
ものを組合せて用いることにより、各低圧鋳造作業にお
いてより最適に用い得る離型剤を得ることができる。
【００１５】
【実施例】以下、本発明の実施例を示すが、本発明はこ
れに限定されるものではない。次に示す（Ａ）〜（Ｅ）
の離型剤を得、これらの離型剤を用いて低圧鋳造法によ
る鋳造の試験を行ない、［表］に示す各項目について比
較検討した。本発明の例である（Ａ）〜（Ｃ）の混合物
としては、用いる有機化合物を粉末状又は顆粒状の形態
で無機化合物に混合したものと、加熱溶融した状態で無
機化合物に混合したものとの両方を得、それぞれについ
て検討したが、結果は両者とも同じであった。なお
（Ａ）〜（Ｅ）の離型剤において用いる各化合物は市販
のものである。 （Ａ）窒化ホウ素（平均粒度１〜５μ）９５部と、ステ
アリン酸カルシウム５部との混合物からなる本発明の第
１の例、（Ｂ）窒化ホウ素２０部と、雲母７５部と、ポ
リエチレン５部との混合物からなる本発明の第２の例、
（Ｃ）窒化ホウ素５０部と、窒化ケイ素４５部と、ステ
アリン酸バリウム３部と、ポリプロピレン２部との混合
物からなる本発明の第３の例、（Ｄ）窒化ホウ素のみ
（比較例１）（Ｅ）ワックスとシリコ―ンオイルを１：
８０の比で主成分として含有してなる水溶性離型剤（比
較例２）、

Claims (6)

    【特許請求の範囲】
  1. 【請求項１】低圧鋳造の作業において金型内面に吹付け
    て用いる離型剤において、固体で潤滑剤として用いられ
    る無機化合物からなる粉末状又は顆粒状の離型剤基材
    と、離型剤基材に付着性を付与する有機化合物とを混合
    してなり、両者とも粉末状又は顆粒状の形態を有し、又
    は離型剤基材が有機化合物により被覆された形態を有す
    ることを特徴とする低圧鋳造用粉末離型剤。
  2. 【請求項２】有機化合物を無機化合物に対して０．１〜
    ４５重量％の割合で含有した請求項１記載の低圧鋳造用
    粉末離型剤。
  3. 【請求項３】無機化合物としては、窒化ホウ素、雲母、
    金属酸化物、窒化ケイ素、硫黄化合物、弗化物、タル
    ク、ホウ素化合物、リン化合物のうち、１種類以上が用
    いられる請求項１又は２記載の低圧鋳造用粉末離型剤。
  4. 【請求項４】有機化合物としては、複数種類の金属石鹸
    や複数種類の高分子化合物のうち、１種類以上が用いら
    れる請求項１ないし３のいずれかに記載の低圧鋳造用粉
    末離型剤。
  5. 【請求項５】金属石鹸は、カルボン酸骨格にナトリウ
    ム、カルシウム、バリウム、リチウム、カリウム、マグ
    ネシウム、又は亜鉛を付加したものである請求項４記載
    の低圧鋳造用粉末離型剤。
  6. 【請求項６】高分子化合物は、ポリエチレン、ポリプロ
    ピレン、エポキシ樹脂、ケイ素樹脂、フェノ―ル樹脂、
    アクリル樹脂、アルキッド樹脂、又はポリスチレンであ
    る請求項４又は５記載の低圧鋳造用粉末離型剤。
JP3067976A 1991-03-06 1991-03-06 低圧鋳造用粉末離型剤 Expired - Lifetime JPH0759346B2 (ja)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP3067976A JPH0759346B2 (ja) 1991-03-06 1991-03-06 低圧鋳造用粉末離型剤
CA002041503A CA2041503A1 (en) 1991-03-06 1991-04-30 Low pressure die casting powdery mold releasing agent
DE4116260A DE4116260A1 (de) 1991-03-06 1991-05-17 Pulverfoermiges formentrennmittel fuer ein niederdruckgussverfahren
KR1019910008264A KR940009799B1 (ko) 1991-03-06 1991-05-22 저압 다이 캐스팅용 분말상 주형 탈형제
GB9111497A GB2253408A (en) 1991-03-06 1991-05-29 Low pressure die casting powdery mold releasing agent
US07/975,956 US5277831A (en) 1991-03-06 1992-11-13 Method for low pressure die casting with low pressure die casting powdery mold releasing agent

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3067976A JPH0759346B2 (ja) 1991-03-06 1991-03-06 低圧鋳造用粉末離型剤

Publications (2)

Publication Number Publication Date
JPH04279244A JPH04279244A (ja) 1992-10-05
JPH0759346B2 true JPH0759346B2 (ja) 1995-06-28

Family

ID=13360532

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3067976A Expired - Lifetime JPH0759346B2 (ja) 1991-03-06 1991-03-06 低圧鋳造用粉末離型剤

Country Status (5)

Country Link
JP (1) JPH0759346B2 (ja)
KR (1) KR940009799B1 (ja)
CA (1) CA2041503A1 (ja)
DE (1) DE4116260A1 (ja)
GB (1) GB2253408A (ja)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000033457A (ja) 1998-07-21 2000-02-02 Denso Corp 潤滑離型剤
CN101898227A (zh) * 2010-07-28 2010-12-01 启东尤希路化学工业有限公司 环境友好型镁合金脱模剂
CN114540101B (zh) * 2022-01-24 2023-03-14 华中光电技术研究所（中国船舶重工集团公司第七一七研究所） 高精度树脂砂轮加工用脱模剂及其使用方法

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB120255A (en) * 1917-10-31 1918-10-31 Thomas William Staine Hutchins Improvements relating to the Manufacture of Carbon Blocks.
GB318740A (en) * 1928-08-27 1929-09-12 Lajos Dorogi Improvements in or relating to templates for the manufacture of articles from sheet rubber
GB334857A (en) * 1929-06-05 1930-09-05 Kelly Graphite Mills Inc Improvements in or relating to parting compounds for foundry moulds
GB676408A (en) * 1950-11-20 1952-07-23 Buttress & Mcclellan Inc Method of constructing concrete building elements
US2937406A (en) * 1959-03-20 1960-05-24 Goodyear Tire & Rubber Fluid pressure core
GB1193645A (en) * 1966-08-05 1970-06-03 Francis Guy Sydenham English Improvements in or relating to Wet-Table Coatings.
US3615071A (en) * 1969-04-16 1971-10-26 Dow Corning Flexible mold
GB1362881A (en) * 1971-06-22 1974-08-07 Scott Bader Co Gel coats for moulds
DE2328337C3 (de) * 1973-06-04 1978-01-19 Wacker Chemie Gmbh Verfahren zum herstellen von formkoerpern und ueberzuegen aus baustoffen auf grundlage von anorganischen bindemitteln
GB2003923B (en) * 1977-09-07 1982-03-10 Foseco Int Metal working lubricants
JPH069730B2 (ja) * 1989-01-13 1994-02-09 花野商事株式会社 ダイカスト用粉末離型剤

Also Published As

Publication number Publication date
DE4116260A1 (de) 1992-09-10
KR940009799B1 (ko) 1994-10-17
JPH04279244A (ja) 1992-10-05
CA2041503A1 (en) 1992-09-07
GB9111497D0 (en) 1991-07-17
GB2253408A (en) 1992-09-09

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