JPH02235544A - Water soluble parting material for die casting - Google Patents
Water soluble parting material for die castingInfo
- Publication number
- JPH02235544A JPH02235544A JP5612189A JP5612189A JPH02235544A JP H02235544 A JPH02235544 A JP H02235544A JP 5612189 A JP5612189 A JP 5612189A JP 5612189 A JP5612189 A JP 5612189A JP H02235544 A JPH02235544 A JP H02235544A
- Authority
- JP
- Japan
- Prior art keywords
- die
- water soluble
- water
- die casting
- alkaline
- 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
- 238000004512 die casting Methods 0.000 title claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title abstract description 9
- 239000000463 material Substances 0.000 title abstract 9
- 150000001412 amines Chemical class 0.000 claims abstract description 14
- 239000002480 mineral oil Substances 0.000 claims abstract description 4
- 239000004094 surface-active agent Substances 0.000 claims abstract description 4
- 239000006082 mold release agent Substances 0.000 claims description 30
- 239000000126 substance Substances 0.000 claims description 11
- 238000009835 boiling Methods 0.000 claims description 5
- 235000010446 mineral oil Nutrition 0.000 claims description 2
- 150000003839 salts Chemical class 0.000 abstract description 6
- 238000005266 casting Methods 0.000 abstract description 3
- 230000003670 easy-to-clean Effects 0.000 abstract description 3
- 239000002904 solvent Substances 0.000 abstract description 3
- 230000002378 acidificating effect Effects 0.000 abstract description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052782 aluminium Inorganic materials 0.000 abstract description 2
- 239000003925 fat Substances 0.000 abstract description 2
- 239000003599 detergent Substances 0.000 abstract 2
- 230000007935 neutral effect Effects 0.000 abstract 2
- 150000001732 carboxylic acid derivatives Chemical class 0.000 abstract 1
- 238000010186 staining Methods 0.000 abstract 1
- 239000001993 wax Substances 0.000 description 9
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 239000003513 alkali Substances 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- -1 fatty acid esters Chemical class 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 235000019198 oils Nutrition 0.000 description 3
- YNAVUWVOSKDBBP-UHFFFAOYSA-N Morpholine Chemical compound C1COCCN1 YNAVUWVOSKDBBP-UHFFFAOYSA-N 0.000 description 2
- GLUUGHFHXGJENI-UHFFFAOYSA-N Piperazine Chemical compound C1CNCCN1 GLUUGHFHXGJENI-UHFFFAOYSA-N 0.000 description 2
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 2
- 239000005062 Polybutadiene Substances 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000012459 cleaning agent Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- NAQMVNRVTILPCV-UHFFFAOYSA-N hexane-1,6-diamine Chemical compound NCCCCCCN NAQMVNRVTILPCV-UHFFFAOYSA-N 0.000 description 2
- 229920002857 polybutadiene Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 description 1
- HVCNXQOWACZAFN-UHFFFAOYSA-N 4-ethylmorpholine Chemical compound CCN1CCOCC1 HVCNXQOWACZAFN-UHFFFAOYSA-N 0.000 description 1
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 description 1
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- SJRJJKPEHAURKC-UHFFFAOYSA-N N-Methylmorpholine Chemical compound CN1CCOCC1 SJRJJKPEHAURKC-UHFFFAOYSA-N 0.000 description 1
- UEEJHVSXFDXPFK-UHFFFAOYSA-N N-dimethylaminoethanol Chemical compound CN(C)CCO UEEJHVSXFDXPFK-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 241000282485 Vulpes vulpes Species 0.000 description 1
- 239000002313 adhesive film Substances 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 239000010775 animal oil Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 0.000 description 1
Landscapes
- Mold Materials And Core Materials (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は金型汚れを防止するダイカスト用水溶性離型剤
に関するものである．
従来の技術
ダイカスト用離型剤は，不水溶性離型剤と水溶性離型剤
に大別されるが，不水溶性離型剤は引火の危険性や発煙
による作業環境の問題があるため、最近では，水溶性離
型剤の使用が主流になってきている。水溶性離型剤とし
ては鉱油、動植物油脂、ワックス、脂肪酸エステル等を
界面活性剤又は水酸化カリウム、水酸化ナトリウム等の
無機アルカリ性物質で乳化又は分敗させた組成物が使用
されている．
水溶性離型剤としては，例えば、特公昭５８−１９３７
８号公報に開示された離型剤、および特開昭６１−１０
３６４２号公報に開示された離型剤がある．
特公昭５８− １ ９３７８号公報に開示された離型剤
は，α．ω−ポリブタジェンジヵルボン酸およびマレイ
ン化ポリブタジエンの少なくとも１種を含むダイカスト
用離型剤である．
特開昭６１−１０３６４２号公報に開示された離型剤は
，平均分子量が５．０００以上のポリエチレンまたは酸
化ポリエチレンまたは酸化ポリエチレンのカリウム塩を
加熱残分中に１０重量％以上含有させたことを特長とす
る水溶性ダイカスト用離型剤である．
上記水溶性離型剤の中で、特に融点の高い酸化ワックス
は無機アルカリによる中和物として用いられ、金型への
付着性に優れ、強固な付着膜を形成する．しかしながら
、ショット数が多くなるにしたがって、金型合わせ面に
酸化ワックスの無機アルカリ中和物が堆積しやすくなり
、溶場の漏れが生じ、鋳造物の寸法精度が低下するとい
う欠点がある。金型への堆積物を除去するために、一定
のショット数ごとに、灯油、アルカリ溶液等の洗浄剤で
金型を洗浄しているが、酸化ワックスの無機アルカリ中
和物の融点が高いために，洗浄が不十分となり堆積物が
残存するという問題がある．発明が解決しようとする問
題点
本発明は前記した従来の水溶性離型剤の欠点を解消し，
金型への堆積物が少なく、かつ、堆積物が洗浄されやす
いダイカスト用水溶性離型剤を提供することを目的とす
る．
問題点を解決するための手段
この目的を達成するために、本発明者らは金型への堆積
性と洗浄性に関して鋭意研究を重ねた結果，酸化ワック
スの中和剤として沸点が２５０℃以下の水溶性アミンを
用いることによって、金型への堆積物が少なく，かつ洗
浄されやすいダイカスト用水溶性離型剤が得られること
を見い出した．
すなわち、本発明の趣旨とするところは、酸化パラフィ
ン、酸化ポリエチレン等の酸化ワックスを、沸点が２５
０℃以下の水溶性アミンの中和塩とした水溶性物質を含
有することを特徴とするダイカスト用水溶性離型剤に関
するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a water-soluble mold release agent for die casting that prevents mold fouling. Conventional mold release agents for die casting are broadly classified into water-insoluble mold release agents and water-soluble mold release agents, but water-insoluble mold release agents pose problems in the working environment due to the risk of ignition and smoke generation. Recently, the use of water-soluble mold release agents has become mainstream. As water-soluble mold release agents, compositions in which mineral oils, animal and vegetable oils, waxes, fatty acid esters, etc. are emulsified or decomposed with surfactants or inorganic alkaline substances such as potassium hydroxide and sodium hydroxide are used. As a water-soluble mold release agent, for example, Japanese Patent Publication No. 58-1937
The mold release agent disclosed in Publication No. 8 and JP-A-61-10
There is a mold release agent disclosed in Japanese Patent No. 3642. The mold release agent disclosed in Japanese Patent Publication No. 58-19378 has α. A mold release agent for die casting containing at least one of ω-polybutadiene dicarboxylic acid and maleated polybutadiene. The mold release agent disclosed in JP-A-61-103642 contains polyethylene having an average molecular weight of 5.000 or more, polyethylene oxide, or potassium salt of polyethylene oxide in an amount of 10% by weight or more in the heated residue. This is a water-soluble mold release agent for die casting. Among the above water-soluble mold release agents, oxidized wax, which has a particularly high melting point, is used as a neutralized product with an inorganic alkali, has excellent adhesion to molds, and forms a strong adhesive film. However, as the number of shots increases, the inorganic alkali neutralized product of oxidized wax tends to accumulate on the mold mating surfaces, causing leakage of the melt field and reducing the dimensional accuracy of the casting. In order to remove deposits on the mold, the mold is cleaned with a cleaning agent such as kerosene or alkaline solution after a certain number of shots, but because the inorganic alkali neutralized product of oxidized wax has a high melting point. However, there is a problem that cleaning is insufficient and deposits remain. Problems to be Solved by the Invention The present invention solves the drawbacks of the conventional water-soluble mold release agents mentioned above, and
The purpose of the present invention is to provide a water-soluble mold release agent for die casting that causes less deposits on a mold and allows the deposits to be easily cleaned. Means for Solving the Problems In order to achieve this objective, the inventors of the present invention conducted intensive research on the depositability on molds and the cleanability. We have discovered that by using a water-soluble amine, it is possible to obtain a water-soluble mold release agent for die casting that deposits less on the mold and is easy to clean. That is, the gist of the present invention is to use oxidized waxes such as oxidized paraffin and oxidized polyethylene with a boiling point of 25
The present invention relates to a water-soluble mold release agent for die casting characterized by containing a water-soluble substance in the form of a neutralized salt of a water-soluble amine at a temperature of 0°C or lower.
以下に本発明の詳細を説明する。The details of the present invention will be explained below.
（アルカリ性物質）
本発明においてアルカリ性物質として使用される沸点２
５０℃以下の水溶性アミンとしては、モノエタノールア
ミン、
モルホリン，
メチルモルホリン、
エチルモルホリン、
Ｎ．Ｎ−ジエチルエタノールアミン、
Ｎ，Ｎ−ジメチルエタノールアミン、
モノイソブロバノールアミン、
エチレンジアミン，
ジエチレンジアミン、
ジエチレントリアミン、
ヘキサメチレンジアミン
などがある。これらのアミン類は、いずれも２０℃にお
いて水と任意の割合に溶解する．しかしながら本発明に
おいては、このようなアミン類だけでなく、２０℃にお
いて水１００ｇに対して１０ｇ以上の溶解度をもつアミ
ン類でも使用することができる．
これらの水溶性アミンの添加量は、酸化ワックスの酸僅
に対して０．８当景以上が必要である．なお、沸点が２
５０℃を越える水溶性アミンでは、高温度の金型への付
着性が低下するため離型性能が悪くなる．
また、本発明においては、上記水溶性アミンのほかの公
知の無機アルカリ性物質として、水酸化カリウム、水酸
化ナトリウム、水酸化リチウム等を中和用アルカリとし
て併用しても良い。ただし、無機アルカリ性物質の添加
量は、酸化フックスの酸僅に対して０．２当量以下とす
ることが必要である．無機アルカリ性物質の添加量が０
．２当量を越えると、酸化ワッククの中和塩の融点が高
くなるため、金型付着物が溶剤系又はアルカリ系洗浄剤
で除去し難くなる。(Alkaline substance) Boiling point 2 used as an alkaline substance in the present invention
Examples of water-soluble amines below 50°C include monoethanolamine, morpholine, methylmorpholine, ethylmorpholine, N. Examples include N-diethylethanolamine, N,N-dimethylethanolamine, monoisobrobanolamine, ethylenediamine, diethylenediamine, diethylenetriamine, and hexamethylenediamine. All of these amines dissolve in water at any ratio at 20°C. However, in the present invention, not only such amines but also amines having a solubility of 10 g or more per 100 g of water at 20° C. can be used. The amount of these water-soluble amines to be added must be at least 0.8 to the amount of acid in the oxidized wax. In addition, the boiling point is 2
Water-soluble amines with temperatures exceeding 50°C have poor adhesion to high-temperature molds, resulting in poor mold release performance. Further, in the present invention, other known inorganic alkaline substances other than the water-soluble amine, such as potassium hydroxide, sodium hydroxide, lithium hydroxide, etc., may be used in combination as a neutralizing alkali. However, it is necessary that the amount of the inorganic alkaline substance added be 0.2 equivalent or less based on the amount of Fuchs' acid. Added amount of inorganic alkaline substances is 0
．． If the amount exceeds 2 equivalents, the melting point of the neutralization salt of the oxidized wax becomes high, making it difficult to remove mold deposits with a solvent-based or alkaline-based cleaning agent.
（その他の成分）
本発明のダイカスト用水溶性離型剤は、上記のアルカリ
性物質以外の成分として、（イ）酸化ワックス，（口）
油脂およびまたは鉱油および（ハ）界面活性剤を含有す
る。上記の（イ）ないし（ハ）としては、従来のダイカ
スト用水溶性離型剤に用いられていたものを用いること
ができる．本発明のダイカスト用水溶性離型剤は，上記
の必須成分のほかに、合成エステル、シリコーンオイル
などを任意成分として４含有することができる。(Other components) The water-soluble mold release agent for die casting of the present invention contains (a) oxidized wax, (a)
Contains fats and oils and/or mineral oil and (c) a surfactant. As (a) to (c) above, those used in conventional water-soluble mold release agents for die casting can be used. The water-soluble mold release agent for die casting of the present invention may contain synthetic ester, silicone oil, etc. as optional components in addition to the above-mentioned essential components.
発明の作用
一般にアルミニウムダイカス、トの鋳造加工では，金型
の温度は最高３００℃となるが、本発明における水溶性
アミンは沸点が２５０℃以下であるため金型内で蒸発し
、金型堆積物は酸性物質すなわちカルボン酸の形で残存
する．かつ、本発明における酸化ワックスの中和塩は、
従来技術の無機アルカリ中和塩と比較して融点が低くな
る．上記理由によって，金型堆積物はアルカリ系洗浄剤
によっても、また、溶剤系洗浄剤によっても除去されや
すくなる．
実 施 例
以下、本発明を実施例によってさらに詳細に説明する。Effect of the invention Generally, in the casting process of aluminum die castings, the temperature of the mold reaches a maximum of 300°C, but since the water-soluble amine used in the present invention has a boiling point of 250°C or lower, it evaporates in the mold and The deposits remain in the form of acidic substances, namely carboxylic acids. And, the neutralized salt of oxidized wax in the present invention is
The melting point is lower than that of conventional inorganic alkali neutralized salts. For the above reasons, mold deposits are easily removed by both alkaline cleaners and solvent cleaners. EXAMPLES Hereinafter, the present invention will be explained in more detail with reference to Examples.
ただし．本発明は下記の実施例によって何らの制限をも
受けるものではない。however. The present invention is not limited in any way by the following examples.
実施例 ｌないしｌＯ
第１表に示す成分を配合して、本発明のダイカスト用水
溶性離型剤を得た．第１表において組成を示す数値の単
位は重量％である．
第
ｌ
表（２）
表（３）
（注）
比較例 ｌないし４
第２表に比較例を示す．第２表において組成を示す数値
の単位は重量％である．
第 ２ 表
第１表に示した実施例ｌないし１０の離型剤と第２表に
示した比較例について、性能試験を行った結果を以下に
示すゆ
（試験例 ｌ》
離型剤の１０倍水希釈液を表面温度２３０ないし２５０
℃の試験鋼板に２０回ス・プレー塗布した後、第３表に
示す条件で洗浄した．
（注）攪拌はマグネットスターラーによった。Examples 1 to 1O A water-soluble mold release agent for die casting of the present invention was obtained by blending the components shown in Table 1. In Table 1, the unit of numerical values indicating the composition is weight %. Table 1 Table (2) Table (3) (Note) Comparative examples 1 to 4 Table 2 shows comparative examples. In Table 2, the unit of numerical values indicating the composition is weight %. Table 2 The performance test results are shown below for the mold release agents of Examples 1 to 10 shown in Table 1 and the comparative examples shown in Table 2. The surface temperature of the diluted solution with water is 230 to 250.
After spray coating the test steel plate 20 times at ℃, it was washed under the conditions shown in Table 3. (Note) Stirring was done using a magnetic stirrer.
第４表に被洗浄率を測定した結果を示す．第 ４
表
（注）被洗浄率は次の式によって計算した．被洗浄率（
％）
＝（付着油量一残存油量）ＸＩＯＯ／付着油量く試験例
２〉
第１図に示す試験装置で離型剤付着物の堆積性を調べた
．
試験条件を第５表に，試験結果を第６表に示す．
第 ５ 表
《試験例 ３》
離型剤の８０倍希釈水溶液について、ダイカスト鋳造を
行い，離型性、製品の仕上面及び金型の被洗浄性につい
て評価したところ、本発明による雌型剤のうちの実施例
ｌ及び５は，第７表に示すとおり、従来技術である比較
例に比べて優れた結果を示した．
第７表
発明の効果
本発明の離型剤を使用すれば，金型面への堆積物量が少
なく、更に．洗浄されやすいために金型汚れが少なくな
る．Table 4 shows the results of measuring the cleaning rate. Fourth
Table (Note) The cleaning rate was calculated using the following formula. Cleaning rate (
%) = (Amount of attached oil - Amount of remaining oil) The test conditions are shown in Table 5, and the test results are shown in Table 6. Table 5 《Test Example 3》 Die-casting was performed using an 80-fold diluted aqueous solution of a mold release agent, and the mold releasability, finished surface of the product, and washability of the mold were evaluated. As shown in Table 7, Examples 1 and 5 showed superior results compared to the comparative example, which is the prior art. Table 7 Effects of the Invention When the mold release agent of the present invention is used, the amount of deposits on the mold surface is reduced, and furthermore. Mold contamination is reduced because it is easy to clean.
第１図は、本発明の離型剤を試験するために使用した離
型剤塗布試験装置の概念図である．出願人 ユシロ化
学工業株式会社FIG. 1 is a conceptual diagram of a mold release agent coating test device used to test the mold release agent of the present invention. Applicant Yushiro Chemical Industry Co., Ltd.
Claims (1)
アミンであることを特徴とするダイカスト用水溶性離型
剤。[Scope of Claims] A water-soluble mold release agent for die casting consisting of (a) oxidized wax, (b) fat and/or mineral oil, (c) surfactant, and (d) alkaline substance, wherein the alkaline substance is A water-soluble mold release agent for die casting characterized by being a water-soluble amine with a boiling point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1056121A JPH0647145B2 (en) | 1989-03-10 | 1989-03-10 | Water-soluble mold release agent for die casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1056121A JPH0647145B2 (en) | 1989-03-10 | 1989-03-10 | Water-soluble mold release agent for die casting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02235544A true JPH02235544A (en) | 1990-09-18 |
| JPH0647145B2 JPH0647145B2 (en) | 1994-06-22 |
Family
ID=13018239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1056121A Expired - Lifetime JPH0647145B2 (en) | 1989-03-10 | 1989-03-10 | Water-soluble mold release agent for die casting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0647145B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994014556A1 (en) * | 1992-12-28 | 1994-07-07 | Tetra Co., Ltd. | Stock solution of parting compound for green sand molding |
| US5626656A (en) * | 1992-12-28 | 1997-05-06 | Tetra Co., Ltd. | Stock solution of release agent for green sand mold forming |
| CN111979032A (en) * | 2020-09-28 | 2020-11-24 | 宁波德曜新材料有限公司 | Water-based aluminum die-casting release agent and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6359779A (en) * | 1986-08-29 | 1988-03-15 | Shigeo Yamazaki | Power source device utilizing magnet |
-
1989
- 1989-03-10 JP JP1056121A patent/JPH0647145B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6359779A (en) * | 1986-08-29 | 1988-03-15 | Shigeo Yamazaki | Power source device utilizing magnet |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994014556A1 (en) * | 1992-12-28 | 1994-07-07 | Tetra Co., Ltd. | Stock solution of parting compound for green sand molding |
| US5626656A (en) * | 1992-12-28 | 1997-05-06 | Tetra Co., Ltd. | Stock solution of release agent for green sand mold forming |
| CN111979032A (en) * | 2020-09-28 | 2020-11-24 | 宁波德曜新材料有限公司 | Water-based aluminum die-casting release agent and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0647145B2 (en) | 1994-06-22 |
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