JPS60121036A - Composition for curable casting mold - Google Patents
Composition for curable casting moldInfo
- Publication number
- JPS60121036A JPS60121036A JP22935683A JP22935683A JPS60121036A JP S60121036 A JPS60121036 A JP S60121036A JP 22935683 A JP22935683 A JP 22935683A JP 22935683 A JP22935683 A JP 22935683A JP S60121036 A JPS60121036 A JP S60121036A
- Authority
- JP
- Japan
- Prior art keywords
- peroxide
- mold
- composition
- methyl ester
- casting mold
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
- B22C1/16—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents
- B22C1/20—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents
- B22C1/22—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents of resins or rosins
- B22C1/2233—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents of resins or rosins obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- B22C1/224—Furan polymers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
- B22C1/02—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by additives for special purposes, e.g. indicators, breakdown additives
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mold Materials And Core Materials (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は耐火性粒状骨材に酸硬化性樹脂と過酸化物を添
加・混練し成型した砂型にガス状又はエロゾル状の二酸
化硫黄を添加して鋳型を成型する際に用いられる組成物
であって、特定の希釈安定化剤を含有する過酸化物組成
物を有する硬化性鋳型組成物に関するものである。Detailed Description of the Invention The present invention involves adding gaseous or aerosol sulfur dioxide to a sand mold made by adding and kneading acid-curing resin and peroxide to fire-resistant granular aggregate to form a mold. The present invention relates to a curable mold composition having a peroxide composition containing a specific dilution stabilizer.
従来、高速で鋳型を製造するには耐火性粒状骨材にフェ
ノールノボラック樹脂を被覆した、所謂レジンコーテツ
ドサンドを成型して熱硬化させるシェルモールド法が使
用されて来た。Conventionally, in order to manufacture molds at high speed, a shell molding method has been used in which so-called resin coated sand, in which refractory granular aggregate is coated with phenol novolac resin, is molded and thermally cured.
しかし、鋳型製造時の省エネルギー、鋳型生産速度、更
に鋳型、鋳物の生産品質を改善するためガスを添加する
事によシ常温で化学反応をし、硬化せしめて鋳型を製造
する所謂コールドボックス法が代替する鋳型の製造法と
して鋳物業界で真剣に導入の検討がされている。However, in order to save energy during mold manufacturing, mold production speed, and improve the production quality of molds and castings, the so-called cold box method is used to manufacture molds by adding gas and causing a chemical reaction to harden at room temperature. The foundry industry is seriously considering its introduction as an alternative mold manufacturing method.
現在コールドボックス法には７ラン樹脂を代表とする酸
硬化性樹脂を過酸化物を酸化剤として二酸化硫黄によシ
硬化する所謂フランコールドボックス法とポリオールと
ポリイソシアネートをエロゾル状の第３級アミンを触媒
として硬化スるウレタンコールドボックス法があシ、７
ラン自硬性で多品種少量鋳物製造分野で好結果が証明さ
れているフランコールドボックス法が最近急速に注目を
集めている。Currently, cold box methods include the so-called furan cold box method, in which acid-curing resins, typically 7-run resin, are cured with sulfur dioxide using peroxide as an oxidizing agent, and polyols and polyisocyanates are cured in the form of aerosols of tertiary amines. There is a urethane cold box method that cures using urethane as a catalyst, 7
The Fran cold box method, which has proven to have good results in the field of producing high-mix, low-volume castings due to its run self-hardening properties, has been rapidly attracting attention recently.
シェルモールド法の一つの難点として鋳物製造工程の内
注湯後のバラシ工程での鋳型の崩壊性が悪く、特にアル
ミ鋳物等では中子の砂型を取り出すには熱処理を施す必
要があり、砂型取出時の省エネルギー、合理化のために
も代替する鋳型プロセスが要求されている。One of the drawbacks of the shell mold method is that the mold does not easily disintegrate during the disassembly process after internal pouring in the casting manufacturing process.Especially for aluminum castings, etc., it is necessary to perform heat treatment to remove the sand mold of the core, and it is difficult to remove the sand mold. An alternative molding process is required in order to save energy and streamline the process.
本発明者らは高速鋳型造型法の内申でも崩壊性の良いフ
ランコールドボックス法の更に崩壊性を改良せしめるべ
く鋭意研究の結果、本発明に到達した。The present inventors have arrived at the present invention as a result of intensive research to further improve the disintegration properties of the Franco cold box method, which has good disintegration properties even in high-speed mold making.
即ち１本発明は耐火性粒状材料に酸硬化性樹脂と過酸化
物組成物を添加混練し成型した砂型に、ガス状又はエロ
ゾル状の二酸化硫黄を吹き込んで鋳型を製造する際に用
いられる組成物であって、過酸化物組成物の希釈安定化
剤が一般式ＨＯＯＯ＋ＯＨ２＋Ｃ００Ｈ（但しｎ＝ｉ〜
１０）で表わされる脂肪族二塩基酸のメチルエステルの
少なくとも一種を５０〜１００重ｉ％含有するものであ
る事を特徴とする硬化性鋳型組成物に係るものである。That is, 1. The present invention is a composition used when manufacturing a mold by blowing gaseous or aerosol sulfur dioxide into a sand mold made by adding and kneading an acid-curable resin and a peroxide composition to a refractory granular material. , the dilution stabilizer of the peroxide composition has the general formula HOOO+OH2+C00H (where n=i~
The present invention relates to a curable mold composition characterized in that it contains 50 to 100% by weight of at least one methyl ester of an aliphatic dibasic acid represented by 10).
本発明において、希釈安定化剤として特に一般式ＨＯＯ
Ｏ＋ＧＨ２−）−０００Ｈ（但しｍ＝２〜．８）で表わ
される脂肪族二塩基酸のメチルエステルの少なくとも１
種を５０〜１００重量係含有するものを使用するのが好
ましい。希釈安定化剤は通常過酸化物に対してほぼ同重
量添加される。In the present invention, as a dilution stabilizer, in particular the general formula HOO
At least one methyl ester of an aliphatic dibasic acid represented by O+GH2-)-000H (where m=2 to .8)
It is preferable to use one containing 50 to 100 seeds by weight. The dilution stabilizer is usually added in approximately the same weight as the peroxide.
又、過酸化物としてはハイドロパーオキサイド。Also, hydroperoxide is a peroxide.
ケトンパーオキサイドが使用され、好ましくはケトンパ
ーオキサイドを使用する。Ketone peroxide is used, preferably ketone peroxide.
通常耐火性粒状材料１００重量部に対し、酸硬化性樹脂
を０．５〜３重量部、該過酸化物組成物を０．１〜１重
景重量加・混練し成型した砂型にガス状もしくはエロゾ
ル状の二酸化硫黄を吹き込み鋳型を製造する。Gaseous or A mold is manufactured by blowing sulfur dioxide in the form of an aerosol.
耐火性粒状骨材としては石英質を主成分とする砕砂他、
ジルコンサンド、クロマイトサンド等が使用されている
が、これらにより本発明を限定するものではない。As fire-resistant granular aggregate, crushed sand mainly composed of quartz, etc.
Although zircon sand, chromite sand, etc. are used, the present invention is not limited thereto.
酸硬化性樹脂としては、フラン樹脂、フェノール樹脂、
尿素樹脂、あるいはそれらの共重縮合物乃至は混合物を
使用するが、これらの酸硬化性樹脂により本発明を限定
するものではない。Acid-curable resins include furan resin, phenol resin,
Although urea resins or copolycondensates or mixtures thereof are used, the present invention is not limited to these acid-curable resins.
更に詳細に実施例により本発明の詳細な説明するが、以
下の実施例によυ本発明の範囲を制限するものではない
。The present invention will be explained in more detail with reference to examples, but the scope of the present invention is not limited to the following examples.
実施例１〜５及び比較例１〜３ 硼砂１，０００重量部にフラン樹脂１２重量部。Examples 1 to 5 and Comparative Examples 1 to 3 12 parts by weight of furan resin to 1,000 parts by weight of borax.
メチルエチルケトンパーオキサイドと表−１記載の希釈
安定化剤とをほぼ同量含有し、活性酸素量が１０％であ
るメチルエチルケトンパーオキサイド組成物５重量部を
添加混線した混合物を５０ ｔｎ／ｍφ×５０ル’ｆｆ
ｌ Ｈの型枠に充填した後、二酸化硫黄を１秒、圧縮空
気を５秒通気して鋳型を成型した。50 tn/mφ x 50 l 'ff
After filling the lH mold, a mold was formed by passing sulfur dioxide for 1 second and compressed air for 5 seconds.
成型した鋳型を７５０℃の炉内に５分間加熱し圧縮強度
を測定して加熱前後の強度によシ鋳型の崩れやすさを測
定した。結果を表−１に示す。The formed mold was heated in a furnace at 750° C. for 5 minutes, and its compressive strength was measured to determine the ease with which the mold would collapse depending on the strength before and after heating. The results are shown in Table-1.
表 −１
実施例６〜７及び比較例４〜５
希釈安定化剤としてアジピン酸ジメチルとアジビン酸ジ
イソプロピルの比率をかえたメチルエチルケトンパーオ
キザイド組成物を使用して実施例１と同様に試験した。Table 1 Examples 6 to 7 and Comparative Examples 4 to 5 Tests were conducted in the same manner as in Example 1 using methyl ethyl ketone peroxide compositions with different ratios of dimethyl adipate and diisopropyl adipate as dilution stabilizers.
結果を表−２に示す。The results are shown in Table-2.
表 −２Table-2
Claims (1)
添加混練し成型した砂型に、ガス状又はエロゾル状の二
酸化硫黄を吹き込んで鋳型を製造する際に用いられる組
成物であって、過酸化物組成物の希釈安定化剤が一般式
％式％） わされる脂肪族二塩基酸のメチルエステルの少なくとも
一種を３０〜１００重量係含有するものである事を特徴
とする硬化性鋳型組成物。 ２ 過酸化物組成物の希釈安定化剤が一般式％式％） される脂肪族二塩基酸のメチルエステルの少なくとも一
種を５０〜１００重量係含有するものである特許請求の
範囲第１項記載の硬化性鋳型組成物。 ３ 過酸化物組成物に含まれる過酸化物がケトン系過酸
化物である特許請求の範囲第１項又は２項記載の組成物
。[Scope of Claims] 1 Used when manufacturing a mold by blowing gaseous or aerosol sulfur dioxide into a sand mold made by adding and kneading an acid-curing resin and a peroxide composition to a fire-resistant granular material. The dilution stabilizer of the peroxide composition contains at least one methyl ester of an aliphatic dibasic acid having the general formula (%) in an amount of 30 to 100% by weight. Characteristic curable mold composition. 2. The dilution stabilizer for the peroxide composition contains 50 to 100% by weight of at least one methyl ester of an aliphatic dibasic acid represented by the general formula %). curable mold composition. 3. The composition according to claim 1 or 2, wherein the peroxide contained in the peroxide composition is a ketone peroxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22935683A JPS60121036A (en) | 1983-12-05 | 1983-12-05 | Composition for curable casting mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22935683A JPS60121036A (en) | 1983-12-05 | 1983-12-05 | Composition for curable casting mold |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60121036A true JPS60121036A (en) | 1985-06-28 |
| JPH0325255B2 JPH0325255B2 (en) | 1991-04-05 |
Family
ID=16890878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22935683A Granted JPS60121036A (en) | 1983-12-05 | 1983-12-05 | Composition for curable casting mold |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60121036A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4661829B2 (en) * | 2007-06-14 | 2011-03-30 | 株式会社富士通ゼネラル | Image data conversion device and camera device provided with the same |
| JP4629131B2 (en) * | 2008-09-03 | 2011-02-09 | 大日本印刷株式会社 | Image converter |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58112627A (en) * | 1981-12-21 | 1983-07-05 | アクゾ・ナ−ムロ−ゼ・フエンノ−トシヤツプ | Manufacture of mold or core |
-
1983
- 1983-12-05 JP JP22935683A patent/JPS60121036A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58112627A (en) * | 1981-12-21 | 1983-07-05 | アクゾ・ナ−ムロ−ゼ・フエンノ−トシヤツプ | Manufacture of mold or core |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0325255B2 (en) | 1991-04-05 |
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