JP3504559B2 - Inorganic compound gas cushion type powder release lubricant - Google Patents
Inorganic compound gas cushion type powder release lubricantInfo
- Publication number
- JP3504559B2 JP3504559B2 JP2000006556A JP2000006556A JP3504559B2 JP 3504559 B2 JP3504559 B2 JP 3504559B2 JP 2000006556 A JP2000006556 A JP 2000006556A JP 2000006556 A JP2000006556 A JP 2000006556A JP 3504559 B2 JP3504559 B2 JP 3504559B2
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- Prior art keywords
- gas
- powder
- release
- mold
- lubricant
- Prior art date
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Description
【０００１】[0001]
【発明の属する技術分野】本発明は、鋳造品を金型から
取り出すために用いる、離型性能が良好な、粉体離型潤
滑剤に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a powder release lubricant which is used for removing a cast product from a mold and has good release performance.
【０００２】[0002]
【従来の技術】アルミニウム合金などの溶湯を高速で金
型に圧入して成形する鋳造作業においては、水中に有機
物を分散させてなるエマルジョンタイプの離型潤滑剤が
多用されているが、離型性能の向上のために水中に無機
物を分散させてなるタイプのものや、離型性能と環境と
を考慮した粉末タイプのものも、使用されるようになっ
てきている。2. Description of the Related Art In a casting operation in which a molten metal such as an aluminum alloy is pressed into a die at a high speed for molding, an emulsion-type releasing lubricant in which an organic substance is dispersed in water is often used. A type in which an inorganic substance is dispersed in water to improve performance, and a powder type in consideration of releasing performance and environment have been used.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、上記い
ずれの離型潤滑剤を使用した場合でも、溶湯と金型内面
とが直接に接触する部分に離型潤滑成分が存在しない場
合には、該部分における離型効果を期待できず、焼付き
が発生するという不具合があった。また、溶湯と金型内
面とが直接に接触する部分に離型潤滑成分が存在してい
ても、溶湯の圧力によって離型潤滑成分の膜が破壊され
た場合には、離型効果を期待できず、焼付きが発生する
という不具合があった。However, even when any of the above releasing lubricants is used, if there is no releasing lubricant component at the portion where the molten metal and the inner surface of the mold are in direct contact with each other, that portion is not used. However, there is a problem in that seizure occurs because the releasing effect in (1) cannot be expected. Even if the mold release lubricating component is present in the part where the molten metal and the inner surface of the mold are in direct contact with each other, the mold releasing effect can be expected when the film of the mold releasing lubrication component is destroyed by the pressure of the molten metal. However, there was a problem that seizure occurred.
【０００４】本発明は、従来の離型潤滑剤に比して、よ
り良好な離型効果を発揮でき、しかも、溶湯と金型内面
とが直接に接触する部分に離型潤滑成分の局部的に存在
しない部分があっても、該部分における離型効果を発揮
して焼付きを防止できる、無機化合物系の粉体離型潤滑
剤を提供することを目的とする。The present invention can exert a better releasing effect as compared with the conventional releasing lubricant, and further, the releasing lubricant component is locally applied to the portion where the molten metal directly contacts the inner surface of the mold. It is an object of the present invention to provide an inorganic compound-based powder release lubricant capable of exhibiting a release effect and preventing seizure even if there is a portion not present in the above.
【０００５】[0005]
【課題を解決するための手段】請求項１記載の発明は、
粉末又は顆粒の、無機化合物であるガス発生離型潤滑成
分の、１種以上のみからなっており、ガス発生離型潤滑
成分が、金型内面において注入された溶湯が接触すると
熱により分解してガスを発生するものであり、且つ、塩
基性炭酸マグネシウム、炭酸マグネシウム、水酸化カル
シウム、水酸化マグネシウム、又は水酸化アルミニウム
であることを特徴とする無機化合物ガスクッション型粉
体離型潤滑剤である。The invention according to claim 1 is
Powder powder or granules, gas generating release lubricant material is inorganic compound, and comprise only 1 or more, the gas generator release lubricant component, when injected molten metal contacts the inner surface of the mold
Inorganic compound gas cushion type powder separation material characterized by being decomposed by heat to generate gas and being basic magnesium carbonate, magnesium carbonate, calcium hydroxide, magnesium hydroxide or aluminum hydroxide Type lubricant.
【０００６】 請求項２記載の発明は、粉末又は顆粒
の、無機化合物であるガス発生離型潤滑成分の、１種以
上と、粉末又は顆粒の、ガス不発生離型潤滑成分の、１
種以上と、からなっており、ガス不発生離型潤滑成分
が、金型内面において注入された溶湯が接触してもガス
を発生することがないものであり、ガス発生離型潤滑成
分が、金型内面において注入された溶湯が接触すると熱
により分解してガスを発生するものであり、且つ、塩基
性炭酸マグネシウム、炭酸マグネシウム、水酸化カルシ
ウム、水酸化マグネシウム、又は水酸化アルミニウムで
あることを特徴とする無機化合物ガスクッション型粉体
離型潤滑剤である。[0006] According to a second aspect of the invention, flour powder or granules, gas generating release lubricant material is inorganic compound, and one or more, flour powder or granules, the gas-generating release lubricant component, 1
It consists of more than one kind, and does not generate gas release lubricant.
However, even if the injected molten metal comes into contact with the inner surface of the mold, the gas
It does not generate heat , and the gas generation mold release lubricant component heats when the molten metal injected on the inner surface of the mold comes into contact.
Inorganic compound gas-cushion type powder mold release characterized by being decomposed by the above to generate gas and being basic magnesium carbonate, magnesium carbonate, calcium hydroxide, magnesium hydroxide or aluminum hydroxide It is a lubricant.
【０００７】請求項２において、「ガスを発生すること
がない」は、全くガスを発生しない場合だけでなく、ガ
スを発生しても極めて微量であるために問題とならない
場合も含む意である。In claim 2, "no gas is generated" is intended to include not only a case where no gas is generated but also a case where a gas does not cause a problem because the amount is extremely small. .
【０００８】本発明の粉体離型潤滑剤が塗布された金型
内面に、溶湯が接触すると、ガス発生離型潤滑成分が溶
湯の熱によって分解してＣＯ2やＨ2Ｏなどのガスを発生
する。このガスが、溶湯と金型内面との間でクッション
として機能するので、離型効果が向上する。しかも、溶
湯と金型内面とが直接に接触する部分に離型潤滑成分の
存在しない部分があっても、該部分にガスが行き渡るの
で、該部分においても離型効果が発揮される。When the molten metal comes into contact with the inner surface of the mold coated with the powder mold releasing lubricant of the present invention, the gas generating mold releasing lubricant component is decomposed by the heat of the molten metal to release gas such as CO 2 and H 2 O. Occur. Since this gas functions as a cushion between the molten metal and the inner surface of the mold, the releasing effect is improved. Moreover, even if there is a part where the mold release lubricating component does not exist in the part where the molten metal and the inner surface of the mold are in direct contact with each other, the gas spreads to that part, so that the mold release effect is also exerted in this part.
【０００９】ガス発生離型潤滑成分のみからなる粉体離
型潤滑剤を用いると、ガスの発生量が多すぎる場合や所
望の離型効果が得られない場合には、ガス不発生離型潤
滑成分を混合して用いるのが、好ましい。If a powder release lubricant consisting of only a gas generation release lubrication component is used, the gas non-release release lubrication can be performed when the amount of gas generated is too large or the desired release effect cannot be obtained. It is preferable to use the components in a mixture.
【００１０】請求項３記載の発明は、請求項１又は２に
記載の発明において、分解温度又は分解速度が異なる２
種以上のガス発生離型潤滑成分を任意に混合してなるも
のである。The invention according to claim 3 is the same as the invention according to claim 1 or 2, wherein the decomposition temperature or the decomposition rate is different.
One or more kinds of gas generating release type lubricating components are arbitrarily mixed.
【００１１】分解温度又は分解速度が異なる２種以上の
ガス発生離型潤滑成分を任意に混合することにより、ガ
ス発生条件が任意に制御される。例えば、成形速度が速
いダイカスト作業の場合には、分解温度が低く且つ分解
速度が速いＣａ（ＯＨ）2を主成分として用いるのが好
ましく、成形速度が遅いスクイズダイカスト作業の場合
には、分解温度が高く且つ分解速度が遅いＣａＣＯ3を
主成分として用いるのが好ましい。By arbitrarily mixing two or more kinds of gas generating release type lubricating components having different decomposition temperatures or decomposition rates, the gas generating conditions can be controlled arbitrarily. For example, in the case of die casting work with a high molding speed, it is preferable to use Ca (OH) 2 having a low decomposition temperature and a high decomposition speed as the main component, and in the case of squeeze die casting work with a slow molding speed, the decomposition temperature It is preferable to use CaCO 3 as a main component, which has a high decomposition rate and a slow decomposition rate.
【００１２】[0012]
【００１３】[0013]
【００１４】なお、本発明の粉体離型潤滑剤は、溶湯の
毎ショット毎に又は一定ショット毎に、金型内面に塗布
して用いる。The powder release lubricant of the present invention is applied to the inner surface of the mold for each shot of the molten metal or for every fixed shot.
【００１５】[0015]
【発明の実施の形態】（実施形態１）ガス発生離型潤滑
成分である粉末の水酸化アルミニウムのみからなる粉体
離型潤滑剤を、金型内面に５ｇ／ｍ2の割合で塗布し、
７００℃の溶融アルミニウムを注入してダイカストを行
った。ダイカスト条件は次の通りである。
・鋳造機…３５０トンコールドチャンバーダイカストマ
シン
・鋳造品…電装部品（カバー類）
・鋳造材質…ＡＤＣ−１２
・鋳込温度…６８０℃
・粉体離型潤滑剤の塗布条件
・オリフィス径…２φ
・吐出時間…０．０８秒
・吐出エアー圧…２ｋｇ／ｃｍ2
・塗布時の金型内減圧度…−２５０ｍｍＨｇ
そして、成形されたアルミニウム製品を金型から取り外
すのに必要な力、即ち、離型力を求めた。また、熱重量
曲線も求めた。離型力は次のように測定した。・離型力
の測定…押出ピンに歪ゲージを取り付け、製品取り出し
時に押出ピンに掛かる歪量を離型力として算出した。BEST MODE FOR CARRYING OUT THE INVENTION (Embodiment 1) A powder release lubricant consisting only of powdered aluminum hydroxide, which is a gas generating release lubricant component, is applied to the inner surface of a mold at a rate of 5 g / m 2 .
Die casting was performed by injecting 700 ° C. molten aluminum. The die casting conditions are as follows. -Casting machine ... 350 ton cold chamber die casting machine-Casting product ... Electrical parts (covers) -Casting material ... ADC-12-Casting temperature ... 680 ° C-Powder release lubricant application conditions-Orifice diameter ... 2φ- Discharging time: 0.08 seconds, Discharging air pressure: 2 kg / cm 2 , Decompression degree in the mold during coating: -250 mmHg And the force required to remove the molded aluminum product from the mold, that is, mold release I asked for power. A thermogravimetric curve was also obtained. The releasing force was measured as follows. -Measurement of release force: A strain gauge was attached to the extrusion pin, and the amount of strain applied to the extrusion pin when the product was taken out was calculated as the release force.
【００１６】図１に水酸化アルミニウム粉末即ち本実施
形態の粉体離型潤滑剤の熱重量曲線を示す。図１に示す
ように、本実施形態の粉体離型潤滑剤は、３００℃付近
で熱分解して、質量が３５％減少し、粉体中の結晶水に
起因したＨ2Ｏガスを発生した。また、本実施形態の粉
体離型潤滑剤の離型力は表１に示す通りであった。FIG. 1 shows a thermogravimetric curve of aluminum hydroxide powder, that is, the powder release lubricant of this embodiment. As shown in FIG. 1, the powder release lubricant of the present embodiment is thermally decomposed at around 300 ° C., the mass is reduced by 35%, and H 2 O gas generated due to crystal water in the powder is generated. did. The releasing force of the powder release lubricant of this embodiment is as shown in Table 1.
【００１７】（実施形態２）ガス発生離型潤滑成分であ
る粉末の塩基性炭酸マグネシウムのみからなる粉体離型
潤滑剤を用い、その他は実施形態１と同様にして、熱重
量曲線及び離型力を求めた。(Embodiment 2) A thermogravimetric curve and mold release are used in the same manner as in Embodiment 1 except that a powder mold release lubricant consisting only of powdery basic magnesium carbonate as a gas generating mold release lubricant component is used. I asked for power.
【００１８】図１に塩基性炭酸マグネシウム粉末即ち本
実施形態の粉体離型潤滑剤の熱重量曲線を示す。図１に
示すように、本実施形態の粉体離型潤滑剤は、２００〜
５００℃付近で熱分解して、質量が６０％減少し、粉体
中の結晶水及び炭酸塩に起因したＨ2Ｏガス及びＣＯ2ガ
スを発生した。また、本実施形態の粉体離型潤滑剤の離
型力は表１に示す通りであった。FIG. 1 shows a thermogravimetric curve of the basic magnesium carbonate powder, that is, the powder release lubricant of this embodiment. As shown in FIG. 1, the powder release lubricant of the present embodiment is
It was thermally decomposed at around 500 ° C., the mass was reduced by 60%, and H 2 O gas and CO 2 gas due to water of crystallization and carbonate in the powder were generated. The releasing force of the powder release lubricant of this embodiment is as shown in Table 1.
【００１９】（実施形態３）ガス発生離型潤滑成分であ
る粉末の炭酸マグネシウムのみからなる粉体離型潤滑剤
を用い、その他は実施形態１と同様にして、熱重量曲線
及び離型力を求めた。図２に炭酸マグネシウム粉末即ち
本実施形態の粉体離型潤滑剤の熱重量曲線を示す。ま
た、離型力は表１に示す通りであった。(Embodiment 3) A thermogravimetric curve and a releasing force are obtained in the same manner as in Embodiment 1 except that a powder release lubricant consisting only of powdery magnesium carbonate which is a gas generating release lubricant component is used. I asked. FIG. 2 shows a thermogravimetric curve of the magnesium carbonate powder, that is, the powder release lubricant of this embodiment. The releasing force was as shown in Table 1.
【００２０】（実施形態４）ガス発生離型潤滑成分であ
る粉末の水酸化マグネシウムのみからなる粉体離型潤滑
剤を用い、その他は実施形態１と同様にして、熱重量曲
線及び離型力を求めた。図２に水酸化マグネシウム粉末
即ち本実施形態の粉体離型潤滑剤の熱重量曲線を示す。
また、離型力は表１に示す通りであった。(Embodiment 4) A thermogravimetric curve and a releasing force are used in the same manner as in Embodiment 1 except that a powder release lubricant consisting only of powdered magnesium hydroxide as a gas generating release lubricant component is used. I asked. FIG. 2 shows a thermogravimetric curve of the magnesium hydroxide powder, that is, the powder release lubricant of this embodiment.
The releasing force was as shown in Table 1.
【００２１】（実施形態５）ガス発生離型潤滑成分であ
る粉末の水酸化カルシウムのみからなる粉体離型潤滑剤
を用い、その他は実施形態１と同様にして、熱重量曲線
及び離型力を求めた。図２に水酸化カルシウム粉末即ち
本実施形態の粉体離型潤滑剤の熱重量曲線を示す。ま
た、離型力は表１に示す通りであった。(Embodiment 5) A thermogravimetric curve and a releasing force are used in the same manner as in Embodiment 1 except that a powder release lubricant consisting only of powdered calcium hydroxide as a gas generating release lubricant component is used. I asked. FIG. 2 shows a thermogravimetric curve of the calcium hydroxide powder, that is, the powder release lubricant of this embodiment. The releasing force was as shown in Table 1.
【００２２】（比較形態１）ガス不発生離型潤滑成分で
ある粉末のタルクのみからなる粉体離型潤滑剤を用い、
その他は実施形態１と同様にして、熱重量曲線及び離型
力を求めた。(Comparative Example 1) Using a powder release lubricant consisting only of powder talc which is a gas non-release release lubricant component,
Others were the same as in the first embodiment, and the thermogravimetric curve and the releasing force were obtained.
【００２３】図１にタルク粉末即ち本比較形態の粉体離
型潤滑剤の熱重量曲線を示す。図１に示すように、本比
較形態の粉体離型潤滑剤は、１０００℃付近まで高温と
なっても熱分解せず、ガスを発生しなかった。また、本
比較形態の粉体離型潤滑剤の離型力は表１に示す通りで
あった。FIG. 1 shows a thermogravimetric curve of talc powder, that is, the powder release lubricant of this comparative embodiment. As shown in FIG. 1, the powder release lubricant of this comparative embodiment did not thermally decompose even at a high temperature up to around 1000 ° C. and did not generate a gas. Further, the releasing force of the powder release lubricant of this comparative form is as shown in Table 1.
【００２４】[0024]
【表１】 [Table 1]
【００２５】表１からわかるように、実施形態１〜５の
粉体離型潤滑剤の離型力は、比較形態１の粉体離型潤滑
剤に比して、小さい。従って、実施形態１〜５の粉体離
型潤滑剤は、離型性能が良好であり、これは、発生した
ガスが、溶湯と金型内面との間でクッションとして機能
するからであると考えられる。As can be seen from Table 1, the releasing force of the powder releasing lubricants of Embodiments 1 to 5 is smaller than that of the powder releasing lubricant of Comparative Example 1. Therefore, the powder release lubricants of Embodiments 1 to 5 have good release performance because the generated gas functions as a cushion between the molten metal and the inner surface of the mold. To be
【００２６】（実施形態６）ガス発生離型潤滑成分であ
る粉末の水酸化カルシウムと炭酸カルシウムとを重量比
７５：２５で混合してなる粉体離型潤滑剤を、金型内面
に５ｇ／ｍ2の割合で塗布し、９００℃の溶融アルミニ
ウムを注入してダイカストを行った。ダイカスト条件は
実施形態１と同じとした。但し、鋳込温度は８８０℃と
した。そして、成形されたアルミニウム製品を金型から
取り外すのに必要な力、即ち、離型力を求めた。また、
熱重量曲線も求めた。離型力は実施形態１と同様にして
測定した。(Embodiment 6) A powder mold releasing lubricant prepared by mixing powdery calcium hydroxide and calcium carbonate, which are gas generating mold releasing lubricant components, in a weight ratio of 75:25 was added to the inner surface of the mold at 5 g / g. It was applied at a ratio of m 2 , and molten aluminum at 900 ° C. was injected to perform die casting. The die casting conditions were the same as in the first embodiment. However, the casting temperature was 880 ° C. Then, the force required to remove the molded aluminum product from the mold, that is, the releasing force was determined. Also,
A thermogravimetric curve was also determined. The releasing force was measured in the same manner as in the first embodiment.
【００２７】図３に水酸化カルシウムと炭酸カルシウム
との混合粉末即ち本実施形態の粉体離型潤滑剤の熱重量
曲線を示す。図３に示すように、本実施形態の粉体離型
潤滑剤は、４００℃付近で熱分解して、Ｈ2Ｏガスを発
生し、質量が減少し、７００℃付近で更に熱分解して、
ＣＯ2ガスを発生し、質量が減少した。また、本実施形
態の粉体離型潤滑剤の離型力は表２に示す通りであっ
た。FIG. 3 shows a thermogravimetric curve of a mixed powder of calcium hydroxide and calcium carbonate, that is, the powder release lubricant of this embodiment. As shown in FIG. 3, the powder release lubricant of this embodiment is thermally decomposed at around 400 ° C. to generate H 2 O gas, its mass is reduced, and further thermally decomposed at around 700 ° C. ,
CO 2 gas was generated and the mass was reduced. Further, the releasing force of the powder release lubricant of this embodiment is as shown in Table 2.
【００２８】（実施形態７）ガス発生離型潤滑成分であ
る粉末の水酸化カルシウム及び炭酸カルシウムと、ガス
不発生離型潤滑成分である粉末の黒鉛とを、重量比５
６：１９：２５で混合してなる粉体離型潤滑剤を用い、
その他は実施形態６と同様にして、離型力を求めた。離
型力は表２に示す通りであった。即ち、本実施形態の粉
体離型潤滑剤は、実施形態６の粉体離型潤滑剤に、潤滑
性の良い黒鉛を添加したものである。(Embodiment 7) Calcium hydroxide and calcium carbonate, which are powders that are gas generating release type lubricating components, and graphite, which is a gas non-release type lubricating component, are weight ratios of 5
Using a powder release lubricant mixed at 6:19:25,
Others were the same as in the sixth embodiment, and the releasing force was obtained. The releasing force was as shown in Table 2. That is, the powder release lubricant of the present embodiment is obtained by adding graphite having good lubricity to the powder release lubricant of the sixth embodiment.
【００２９】（比較形態２）ガス不発生離型潤滑成分で
ある粉末のタルクのみからなる粉体離型潤滑剤を用い、
その他は実施形態６と同様にして、離型力を求めた。離
型力は表２に示す通りであった。(Comparative Example 2) A powder release lubricant containing only powder talc, which is a gas-free release lubricant component, was used.
Others were the same as in the sixth embodiment, and the releasing force was obtained. The releasing force was as shown in Table 2.
【００３０】[0030]
【表２】 [Table 2]
【００３１】表２からわかるように、実施形態６，７の
粉体離型潤滑剤の離型力は、比較形態２の粉体離型潤滑
剤に比して、小さい。従って、実施形態６，７の粉体離
型潤滑剤は、離型性能が良好であり、これは、発生した
ガスが、溶湯と金型内面との間でクッションとして機能
するからであると考えられる。また、実施形態７の粉体
離型潤滑剤の離型力は、実施形態６の粉体離型潤滑剤に
比して、小さい。これは、発生したガスによるクッショ
ン効果と、黒鉛による潤滑効果とが、相乗的に作用した
からであると考えられる。As can be seen from Table 2, the releasing force of the powder releasing lubricants of Embodiments 6 and 7 is smaller than that of the powder releasing lubricant of Comparative Example 2. Therefore, the powder release lubricants of Embodiments 6 and 7 have good release performance because the generated gas functions as a cushion between the molten metal and the inner surface of the mold. To be The releasing force of the powder release lubricant of the seventh embodiment is smaller than that of the powder release lubricant of the sixth embodiment. It is considered that this is because the cushioning effect of the generated gas and the lubricating effect of graphite act synergistically.
【００３２】（実施形態８）ガス発生離型潤滑成分であ
る粉末の水酸化カルシウムと、ガス不発生離型潤滑成分
である粉末の黒鉛とを、重量比６０：４０で混合してな
る粉体離型潤滑剤を、金型内面に５ｇ／ｍ2の割合で塗
布し、６８０℃の溶融アルミニウムを注入してダイカス
トを行った。ダイカスト条件は実施形態１と同じとし
た。そして、成形されたアルミニウム製品を金型から取
り外すのに必要な力、即ち、離型力を求めた。離型力は
実施形態１と同様にして測定した。離型力は表３に示す
通りであった。(Embodiment 8) A powder obtained by mixing powdery calcium hydroxide, which is a gas generating release type lubricating component, and graphite, which is a gas non-release type lubricating component, in a weight ratio of 60:40. A mold release lubricant was applied to the inner surface of the mold at a rate of 5 g / m 2 , and molten aluminum at 680 ° C. was injected to perform die casting. The die casting conditions were the same as in the first embodiment. Then, the force required to remove the molded aluminum product from the mold, that is, the releasing force was determined. The releasing force was measured in the same manner as in the first embodiment. The releasing force was as shown in Table 3.
【００３３】（比較形態３）ガス不発生離型潤滑成分で
ある粉末の、タルクと黒鉛とを重量比６０：４０で混合
してなる粉体離型潤滑剤を用い、その他は実施形態８と
同様にして、離型力を求めた。離型力は表３に示す通り
であった。(Comparative embodiment 3) A powder release lubricant is used which is a gas non-releasing release lubricant powder mixture of talc and graphite in a weight ratio of 60:40. Similarly, the releasing force was obtained. The releasing force was as shown in Table 3.
【００３４】[0034]
【表３】 [Table 3]
【００３５】表３からわかるように、実施形態８の粉体
離型潤滑剤の離型力は、比較形態３の粉体離型潤滑剤に
比して、小さい。従って、実施形態８の粉体離型潤滑剤
は、離型性能が良好であり、これは、発生したガスが、
溶湯と金型内面との間でクッションとして機能するから
であると考えられる。As can be seen from Table 3, the releasing force of the powder release lubricant of the eighth embodiment is smaller than that of the powder release lubricant of the comparative form 3. Therefore, the powder release lubricant of Embodiment 8 has good release performance because the generated gas is
It is considered that this is because it functions as a cushion between the molten metal and the inner surface of the mold.
【００３６】（実施形態９）ガス発生離型潤滑成分であ
る粉末の水酸化カルシウムと、ガス不発生離型潤滑成分
である粉末の黒鉛と、ワックスとを、重量比５４：３
６：１０で混合してなる粉体離型潤滑剤を用い、その他
は実施形態８と同様にして、離型力を求めた。離型力は
表４に示す通りであった。(Embodiment 9) Calcium hydroxide, which is a gas-releasing release lubricating component, powder, graphite, which is a gas-unreleasing release lubricating component, and wax, are used in a weight ratio of 54: 3.
The release force was determined in the same manner as in Embodiment 8 except that the powder release lubricant mixed at 6:10 was used. The releasing force was as shown in Table 4.
【００３７】（比較形態４）ガス不発生離型潤滑成分で
ある粉末のタルク及び黒鉛と、ワックスとを、重量比５
４：３６：１０で混合してなる粉体離型潤滑剤を用い、
その他は実施形態８と同様にして、離型力を求めた。離
型力は表４に示す通りであった。(Comparative embodiment 4) A talc and graphite powder, which are gas-free release type lubricating components, and a wax are mixed in a weight ratio of 5.
Using a powder release lubricant mixed at 4:36:10,
Others were the same as in the eighth embodiment, and the releasing force was obtained. The releasing force was as shown in Table 4.
【００３８】（実施形態１０）ガス発生離型潤滑成分で
ある粉末の水酸化カルシウムと、ガス不発生離型潤滑成
分である粉末の黒鉛と、ワックスとを、重量比５０：２
５：２５で混合してなる粉体離型潤滑剤を用い、その他
は実施形態８と同様にして、離型力を求めた。離型力は
表４に示す通りであった。(Embodiment 10) Calcium hydroxide, which is a gas-releasing release lubricating component, powder, graphite, which is a gas-unreleasing release lubricating component, and wax, are used in a weight ratio of 50: 2.
The release force was determined in the same manner as in Embodiment 8 except that the powder release lubricant mixed at 5:25 was used. The releasing force was as shown in Table 4.
【００３９】（比較形態５）ガス不発生離型潤滑成分で
ある粉末のタルク及び黒鉛と、ワックスとを、重量比５
０：２５：２５で混合してなる粉体離型潤滑剤を用い、
その他は実施形態８と同様にして、離型力を求めた。離
型力は表４に示す通りであった。(Comparative form 5) Talc and graphite, which are gas-free releasing lubricant components, and wax are mixed in a weight ratio of 5
Using a powder release lubricant mixed at 0:25:25,
Others were the same as in the eighth embodiment, and the releasing force was obtained. The releasing force was as shown in Table 4.
【００４０】[0040]
【表４】 [Table 4]
【００４１】表４からわかるように、ワックスの含有量
が少ない場合でも多い場合でも、ガス発生離型潤滑成分
を含んだ粉体離型潤滑剤の方が、離型力が小さい。従っ
て、実施形態９，１０の粉体離型潤滑剤は、離型性能が
良好であり、これは、発生したガスが、溶湯と金型内面
との間でクッションとして機能するからであると考えら
れる。As can be seen from Table 4, the release force of the powder release lubricant containing the gas generating release lubricant component is smaller when the wax content is low or high. Therefore, the powder release lubricants of Embodiments 9 and 10 have good release performance because the generated gas acts as a cushion between the molten metal and the inner surface of the mold. To be
【００４２】[0042]
【発明の効果】請求項１記載の発明によれば、溶湯の熱
によって確実に分解してＣＯ ２ やＨ ２ Ｏなどのガスを発
生できる。そして、鋳造作業時に発生したガスが溶湯と
金型内面との間でクッションとして機能するので、離型
効果を向上できる。しかも、溶湯と金型内面とが直接に
接触する部分に離型潤滑成分の存在しない部分があって
も、該部分にガスが行き渡るので、該部分における離型
効果を発揮して焼付きを防止できる。According to the invention of claim 1, the heat of the molten metal
Is reliably decomposed and emits gas such as CO 2 and H 2 O.
Can live. Further, the gas generated during the casting operation functions as a cushion between the molten metal and the inner surface of the mold, so that the releasing effect can be improved. Moreover, even if there is a part where the mold release lubricating component does not exist in the part where the molten metal directly contacts the inner surface of the mold, the gas spreads to that part, so the mold release effect is exerted in that part and seizure is prevented. it can.
【００４３】 請求項２記載の発明によれば、溶湯の熱
によって確実に分解してＣＯ ２ やＨ ２ Ｏなどのガスを発
生できる。そして、鋳造作業時に発生したガスが溶湯と
金型内面との間でクッションとして機能するので、離型
効果を向上できる。しかも、溶湯と金型内面とが直接に
接触する部分に離型潤滑成分の存在しない部分があって
も、該部分にガスが行き渡るので、該部分における離型
効果を発揮して焼付きを防止できる。更に、ガスの発生
量が多すぎる場合や所望の離型効果が得られない場合に
は、ガス不発生離型潤滑成分を混合することにより、離
型効果を調節できる。According to the invention of claim 2 , heat of the molten metal
Is reliably decomposed and emits gas such as CO 2 and H 2 O.
Can live. Further, the gas generated during the casting operation functions as a cushion between the molten metal and the inner surface of the mold, so that the releasing effect can be improved. Moreover, even if there is a part where the mold release lubricating component does not exist in the part where the molten metal directly contacts the inner surface of the mold, the gas spreads to that part, so the mold release effect is exerted in that part and seizure is prevented. it can. Further, when the amount of generated gas is too large or when the desired releasing effect cannot be obtained, the releasing effect can be adjusted by mixing the non-gas releasing releasing lubricating component.
【００４４】請求項３記載の発明によれば、ガス発生条
件を任意に制御できる。従って、例えば、成形速度が速
いダイカスト作業の場合や成形速度が遅いスクイズダイ
カスト作業の場合において、最適の離型効果を得ること
ができる。According to the third aspect of the invention, the gas generation conditions can be controlled arbitrarily. Therefore, for example, in the case of die casting work with a high molding speed or the squeeze die casting work with a slow molding speed, the optimum releasing effect can be obtained.
【００４５】[0045]
【図１】 実施形態１，２及び比較形態１で用いた離型
潤滑成分の熱重量曲線を示す図である。FIG. 1 is a diagram showing a thermogravimetric curve of a releasing lubricant component used in Embodiments 1 and 2 and Comparative Embodiment 1.
【図２】 実施形態３〜５で用いた離型潤滑成分の熱重
量曲線を示す図である。FIG. 2 is a diagram showing a thermogravimetric curve of a releasing lubricant component used in Embodiments 3 to 5.
【図３】 実施形態６で用いた離型潤滑成分の熱重量曲
線を示す図である。FIG. 3 is a diagram showing a thermogravimetric curve of a releasing lubricant component used in a sixth embodiment.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 上野 覚 岡山県岡山市芳賀5301 岡山県工業技術 センター内 (72)発明者 藤井 敏男 広島県呉市阿賀南２丁目10−１ 広島県 立西部工業技術センター内 (72)発明者 府山 伸行 広島県呉市阿賀南２丁目10−１ 広島県 立西部工業技術センター内 (72)発明者 五本上 敬司 兵庫県神戸市西区高塚台３丁目２番地45 花野商事株式会社内 (56)参考文献 特開 平２−137640（ＪＰ，Ａ) 特開 昭63−290647（ＪＰ，Ａ) 特開 昭58−192657（ＪＰ，Ａ) 特開 平９−47841（ＪＰ，Ａ) 特開 平９−155495（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) B22C 1/00 - 1/26 B22C 3/00 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Satoru Ueno 5301 Haga, Okayama City, Okayama Prefecture Okayama Industrial Technology Center (72) Inventor Toshio Fujii, 2-10-1, Agananami, Kure City, Hiroshima Prefecture Western Western Industrial Technology Inside the center (72) Inventor Nobuyuki Fuyama 2-10-1, Agananami, Kure City, Hiroshima Prefecture Inside the Western Prefectural Industrial Technology Center (72) Inventor Keiji Gohonjo 3-2 Takazukadai 45, Nishi-ku, Kobe City, Hyogo Prefecture Hanano Shoji Co., Ltd. (56) Reference JP-A-2-137640 (JP, A) JP-A-63-290647 (JP, A) JP-A-58-192657 (JP, A) JP-A-9-47841 ( JP, A) JP-A-9-155495 (JP, A) (58) Fields investigated (Int.Cl. 7 , DB name) B22C 1/00-1/26 B22C 3/00
Claims (3)
発生離型潤滑成分の、１種以上のみからなっており、 ガス発生離型潤滑成分が、金型内面において注入された
溶湯が接触すると熱により分解してガスを発生するもの
であり、且つ、塩基性炭酸マグネシウム、炭酸マグネシ
ウム、水酸化カルシウム、水酸化マグネシウム、又は水
酸化アルミニウムであることを特徴とする無機化合物ガ
スクッション型粉体離型潤滑剤。1. A flour powder or granules, gas generating release lubricant material is inorganic compound, and comprise only 1 or more, the gas generator release lubricating component, injected in the mold inner surface
Those that generate gas when decomposed by heat when the molten metal comes into contact
And a basic magnesium carbonate, magnesium carbonate, calcium hydroxide, magnesium hydroxide, or aluminum hydroxide, which is an inorganic compound gas cushion type powder release lubricant.
発生離型潤滑成分の、１種以上と、粉 末又は顆粒の、ガス不発生離型潤滑成分の、１種以上
と、からなっており、ガス不発生離型潤滑成分が、金型内面において注入され
た溶湯が接触してもガスを発生することがないものであ
り、 ガス発生離型潤滑成分が、金型内面において注入された
溶湯が接触すると熱により分解してガスを発生するもの
であり、且つ、塩基性炭酸マグネシウム、炭酸マグネシ
ウム、水酸化カルシウム、水酸化マグネシウム、又は水
酸化アルミニウムであることを特徴とする無機化合物ガ
スクッション型粉体離型潤滑剤。Of 2. A powder powder or granules, gas generating release lubricant material is inorganic compound, and one or more, flour powder or granules, the gas-generating release lubricant material, made from one or more and, And the gas-free release lubricant component is injected on the inner surface of the mold.
It does not generate gas when it comes into contact with molten metal.
, The gas generation mold release lubrication component was injected on the inner surface of the mold.
Those that generate gas when decomposed by heat when the molten metal comes into contact
And a basic magnesium carbonate, magnesium carbonate, calcium hydroxide, magnesium hydroxide, or aluminum hydroxide, which is an inorganic compound gas cushion type powder release lubricant.
のガス発生離型潤滑成分を任意に混合してなる請求項１
又は２に記載の無機化合物ガスクッション型粉体離型潤
滑剤。3. The composition according to claim 1, wherein two or more kinds of gas generating release type lubricating components having different decomposition temperatures or decomposition rates are arbitrarily mixed.
Or the inorganic compound gas cushion type powder release lubricant according to item 2.
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| JP2000006556A JP3504559B2 (en) | 2000-01-14 | 2000-01-14 | Inorganic compound gas cushion type powder release lubricant |
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| JP3504559B2 true JP3504559B2 (en) | 2004-03-08 |
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