JPH0429450B2 - - Google Patents
Info
- Publication number
- JPH0429450B2 JPH0429450B2 JP22378184A JP22378184A JPH0429450B2 JP H0429450 B2 JPH0429450 B2 JP H0429450B2 JP 22378184 A JP22378184 A JP 22378184A JP 22378184 A JP22378184 A JP 22378184A JP H0429450 B2 JPH0429450 B2 JP H0429450B2
- Authority
- JP
- Japan
- Prior art keywords
- carbon atoms
- mold
- release agent
- mold release
- aliphatic
- 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
Links
- 239000006082 mold release agent Substances 0.000 claims description 21
- 125000004432 carbon atom Chemical group C* 0.000 claims description 10
- -1 fatty acid esters Chemical class 0.000 claims description 8
- 150000001338 aliphatic hydrocarbons Chemical class 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 239000003960 organic solvent Substances 0.000 claims description 5
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 4
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 4
- 239000000194 fatty acid Substances 0.000 claims description 4
- 229930195729 fatty acid Natural products 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 125000001931 aliphatic group Chemical group 0.000 claims description 2
- 238000009835 boiling Methods 0.000 claims description 2
- 150000008282 halocarbons Chemical class 0.000 claims description 2
- 229940057995 liquid paraffin Drugs 0.000 claims description 2
- 150000003014 phosphoric acid esters Chemical class 0.000 claims description 2
- 229920001296 polysiloxane Polymers 0.000 claims description 2
- 125000002029 aromatic hydrocarbon group Chemical group 0.000 claims 1
- 150000003021 phthalic acid derivatives Chemical class 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 description 15
- 238000000034 method Methods 0.000 description 11
- 239000011347 resin Substances 0.000 description 9
- 229920005989 resin Polymers 0.000 description 9
- 239000011230 binding agent Substances 0.000 description 8
- 238000000465 moulding Methods 0.000 description 6
- 239000004576 sand Substances 0.000 description 6
- 239000008187 granular material Substances 0.000 description 5
- YLQBMQCUIZJEEH-UHFFFAOYSA-N Furan Chemical compound C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 4
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- 239000000356 contaminant Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 150000002978 peroxides Chemical class 0.000 description 3
- 238000010186 staining Methods 0.000 description 3
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000009970 fire resistant effect Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000010112 shell-mould casting Methods 0.000 description 2
- 150000003512 tertiary amines Chemical class 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 235000012241 calcium silicate Nutrition 0.000 description 1
- JHLNERQLKQQLRZ-UHFFFAOYSA-N calcium silicate Chemical compound [Ca+2].[Ca+2].[O-][Si]([O-])([O-])[O-] JHLNERQLKQQLRZ-UHFFFAOYSA-N 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- WDPYDDUVWLUIDM-UHFFFAOYSA-N ethyl carbamate;phenol Chemical compound CCOC(N)=O.OC1=CC=CC=C1 WDPYDDUVWLUIDM-UHFFFAOYSA-N 0.000 description 1
- 239000007849 furan resin Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000025 natural resin Substances 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical class OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920001228 polyisocyanate Polymers 0.000 description 1
- 239000005056 polyisocyanate Substances 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- 235000019353 potassium silicate Nutrition 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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
- B22C1/02—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
- B22C1/14—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 for separating the pattern from the mould
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Mold Materials And Core Materials (AREA)
Description
［産業上の利用分野］
本発明は鋳型用離型剤に関し、特に酸硬化性樹
脂等の有機粘結剤を用いて鋳型を製造する際に使
用される離型剤により硬化樹脂及び砂付着等の模
型汚れを改良した離型剤に関するものである。
［従来の技術］
従来、中大量の鋳型を製造するには耐火性粒状
材料にフエノール樹脂を被覆し、これを空気、圧
力等を用いて金型に充填し熱硬化成型させるシエ
ルモールド法が使用されてきた。
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、鋳物の品質を改善するため、ガス
状又はエロゾル状物質で常温硬化させるコールド
ボツクス鋳型製造法が、シエルモールド法を代替
する鋳型の製造法として鋳物業界で真剣に導入が
試みられて来ている。
コールドボツクス法にはフラン系樹脂を代表と
する酸硬化性樹脂を過酸化物を酸化剤として二酸
化硫黄により硬化させるフランコールドボツクス
と、ポリオールとポリイソシアネートとをエロゾ
ル状の第３級アミンを触媒として硬化するウレタ
ンコールドボツクスがある。
この中ウレタンコールドボツクスを使用した鋳
型は、鋳型製造時の鋳砂の崩壊性が悪いとか、砂
かみ、すくわれ、ピンホール、すす欠陥等の鋳造
欠陥が発生しやすい等の欠点がある。
それに対し、フランコールドボツクスは前記の
難点を解決する方法として近年急速に注目を集め
ている。
本発明はこのフランコールドボツクス法に使用
されるに適した離型剤に関するもので、常温での
ガス注入により瞬時に硬化するコールドボツクス
の生産性低下を起こす因子である模型汚れの改善
のため使用される離型剤に関する。
従来、中大量の鋳型を製造するには自動造型機
が使用されており、耐火性粒状材料に酸硬化性樹
脂と過酸化物が添加混練されて耐火性粒状材料表
面を被覆し、空気圧等によつて自動的に充填成
型、硬化、取り出しが１分以内のサイクルで連続
的に行われている。
［発明が解決しようとする問題点］
しかし、コールドボツクス法では硬化ガス及び
空気の圧力及び気体の流れ不均一等により、模型
表面には耐火性粒状材料表面に被覆された粘結剤
が移行されて発生する樹脂付着や鋳型表面の硬化
不均一による砂付着といつた模型汚れを発生しや
すいという欠点がある。
模型汚れの樹脂付着及び砂つきにより、連続生
産中に模型汚れを取り除くための造型機の停止時
間が１日の作業内で数回必要となり、鋳型生産性
を低下させている。
従つて、コールドボツクス法では更に鋳型生産
性を向上させるため樹脂付着及び砂つきを改善す
る離型剤が要望されている。
［問題点を解決するための手段］
本発明者らは、模型汚れを大幅に改善し、鋳型
生産性を更に向上させるための離型剤を得るべく
鋭意研究の結果、本発明に到達した。
即ち、本発明は、耐火性粒状材料に有機粘結剤
を添加、混練して硬化性鋳型を製造する際に用い
られる、模型の汚れを防止する離型剤であつて、
平均粒径が5μｍ以下である亜鉛粉末２〜50重量
％、粘度が１万cps以下の液状油１〜20重量％及
び沸点が200℃以下である有機溶剤30〜97重量％
からなる鋳型模型用離型剤に係るものである。
本発明に用いられる亜鉛粉末は平均粒径が5μ
ｍ以下である必要があり、5μｍを越えると塗布
性が悪くなり、塗布面にむらができ、汚染防止の
性能が低下することもある。
本発明に用いられる液状油としては脂肪酸エス
テル、多価脂肪酸エステル、フタル酸エステル、
シリコン、燐酸エステル、流動パラフイン等が使
用でき、これらの混合物であつても良い。
本発明に用いられる有機溶剤としては炭素数６
〜14の芳香族炭化水素、炭素数４〜12の脂肪族炭
化水素、炭素数５〜12の脂還族炭化水素、炭素数
１〜８のハロゲン化炭化水素、炭素数２〜12の脂
肪族エステル、炭素数３〜12の脂肪族ケトン、炭
素数１〜12の脂肪族アルコール等が挙げられ、こ
れらの混合物であつても良い。
本発明の離型剤中の、平均粒径が5μｍ以下で
ある亜鉛粉末の配合割合は、前記範囲内である必
要があり、２重量％未満では離型剤としての性能
が不十分となり、50重量％を越えると塗布性の点
で好ましくない。
又、有機溶剤並びに液状油の配合割合も前記範
囲内である必要があり、この範囲を外れると塗布
性が悪く均一に塗布できない場合がある。
本発明の離型剤にはバインダーとして天然又は
合成の樹脂を更に加えることも可能である。又、
従来離型剤として使用されている有機又は無機の
粉末を併用することも可能である。
〔作用及び効果〕
本発明に係る鋳型模型用離型剤は、有機粘結剤
をバインダーとして鋳型を製造する場合に特に顕
著な効果を有し、従来使用されている黒鉛系、シ
リコン系、フツ素系などの離型剤に比べて、鋳型
模型への樹脂の付着量が極めて少ない。
［実施例］
以下、本発明を実施例により更に詳細に説明す
るが、以下の実施例により本発明を制限するもの
ではない。
実施例１〜10及び比較例１〜３
本発明に係る離型剤及び比較のため市販離型剤
をアルミ製の鋳型製造用模型に10回鋳型を製造す
る毎に１回噴霧し、フラン樹脂を過酸化物存在下
に亜硫酸ガスでガス硬化させるフランコールドボ
ツクス法で繰り返し鋳型を製造し、500回造型時
の模型への汚染物付着量と汚染物付着により鋳型
の品質低下で造型不能となる限界造型数を調べ
た。結果を表１及び表２に示す。
[Industrial Application Field] The present invention relates to a mold release agent for molds, and in particular, the mold release agent used when manufacturing molds using an organic binder such as an acid-curable resin can prevent hardened resin and sand adhesion. This invention relates to a mold release agent that improves model staining. [Conventional technology] Conventionally, in order to manufacture molds in medium to large quantities, the shell molding method was used, in which a refractory granular material was coated with phenolic resin, and this was filled into a mold using air, pressure, etc., and then thermoset molded. It has been. However, in order to save energy during mold manufacturing, mold production speed, and improve the quality of molds and castings, the cold box mold manufacturing method, which hardens at room temperature using gaseous or aerosol substances, has become an alternative mold manufacturing method to the shell molding method. Serious attempts are being made to introduce it in the foundry industry. The cold box method involves curing acid-curing resins, typically furan-based resins, with sulfur dioxide using peroxide as an oxidizing agent, and curing polyols and polyisocyanates using an aerosol-like tertiary amine as a catalyst. There is a urethane cold box that hardens. Among these, molds using urethane cold boxes have drawbacks such as poor disintegration of casting sand during mold manufacturing, and a tendency to cause casting defects such as sand trapping, scooping, pinholes, and soot defects. On the other hand, Francold Boxing has been rapidly attracting attention in recent years as a method to solve the above-mentioned difficulties. The present invention relates to a mold release agent suitable for use in the Franco cold box method, and is used to improve model staining, which is a factor that causes a decrease in productivity in cold boxes that harden instantly by gas injection at room temperature. The present invention relates to a mold release agent. Conventionally, automatic molding machines have been used to manufacture molds in medium to large quantities, in which acid-curing resin and peroxide are added and kneaded to the fire-resistant granular material to coat the surface of the fire-resistant granular material, and the molds are exposed to air pressure, etc. Therefore, filling, molding, curing, and removal are automatically performed continuously in a cycle of less than one minute. [Problems to be Solved by the Invention] However, in the cold box method, the binder coated on the surface of the refractory granular material is transferred to the model surface due to the pressure of the curing gas and air and uneven gas flow. The drawback is that resin adhesion caused by molding and sand adhesion due to uneven curing of the mold surface tend to cause model stains. Due to the adhesion of model dirt to resin and sand, the molding machine needs to be stopped several times during continuous production to remove model dirt, reducing mold productivity. Therefore, in order to further improve mold productivity in the cold box method, there is a need for a mold release agent that improves resin adhesion and sand buildup. [Means for Solving the Problems] The present inventors have arrived at the present invention as a result of intensive research to obtain a mold release agent that can significantly improve model staining and further improve mold productivity. That is, the present invention is a mold release agent that prevents mold stains and is used when manufacturing a curable mold by adding and kneading an organic binder to a refractory granular material,
2-50% by weight of zinc powder with an average particle size of 5 μm or less, 1-20% by weight of liquid oil with a viscosity of 10,000 cps or less, and 30-97% by weight of an organic solvent with a boiling point of 200°C or less.
This relates to a mold release agent for mold models consisting of: The zinc powder used in the present invention has an average particle size of 5μ
If it exceeds 5 μm, the coating properties will be poor, the coated surface will be uneven, and the anti-contamination performance may deteriorate. Liquid oils used in the present invention include fatty acid esters, polyvalent fatty acid esters, phthalate esters,
Silicone, phosphoric acid ester, liquid paraffin, etc. can be used, and a mixture thereof may also be used. The organic solvent used in the present invention has 6 carbon atoms.
~14 aromatic hydrocarbons, C4-12 aliphatic hydrocarbons, C5-12 aliphatic hydrocarbons, C1-8 halogenated hydrocarbons, C2-12 aliphatics Examples include esters, aliphatic ketones having 3 to 12 carbon atoms, aliphatic alcohols having 1 to 12 carbon atoms, and mixtures thereof may be used. The blending ratio of zinc powder with an average particle size of 5 μm or less in the mold release agent of the present invention must be within the above range, and if it is less than 2% by weight, the performance as a mold release agent will be insufficient. If it exceeds % by weight, it is unfavorable in terms of coating properties. Further, the blending ratio of the organic solvent and liquid oil must also be within the above range; if it is out of this range, the coating properties may be poor and uniform coating may not be possible. It is also possible to further add a natural or synthetic resin as a binder to the mold release agent of the present invention. or,
It is also possible to use organic or inorganic powders conventionally used as mold release agents. [Operations and Effects] The mold release agent for mold models according to the present invention has a particularly remarkable effect when manufacturing molds using an organic binder as a binder, and has a particularly remarkable effect when manufacturing molds using an organic binder as a binder. Compared to base-based mold release agents, the amount of resin attached to the mold model is extremely small. [Examples] Hereinafter, the present invention will be explained in more detail with reference to Examples, but the present invention is not limited to the following Examples. Examples 1 to 10 and Comparative Examples 1 to 3 The mold release agent according to the present invention and a commercially available mold release agent for comparison were sprayed onto an aluminum mold manufacturing model once every 10 molds manufactured, and the furan resin Molds are manufactured repeatedly using the Franco cold box method in which the mold is gas-cured with sulfur dioxide gas in the presence of peroxide, and the quality of the mold deteriorates due to the amount of contaminants adhering to the model after 500 molds and the contaminants adhere to it, making it impossible to manufacture. We investigated the critical molding number. The results are shown in Tables 1 and 2.
【表】【table】
【表】
実施例11〜13及び比較例４〜５
実施例１〜３及び比較例１〜２の離型剤を使用
して鋳型製造用模型の材質を木、エポキシ樹脂、
アルミ型で、鋳型製造法を有機スルホン酸を硬化
剤とするフラン自硬性、ピリジン系３級アミンを
触媒とするフエノールウレタン自硬性、ダイカル
シウムシリケートを硬化剤とする水ガラス自硬性
で繰り返し100回造型し汚染物付着量を実施例１
〜10及び比較例１〜３と同様に試験した。結果を
表３に示す。[Table] Examples 11 to 13 and Comparative Examples 4 to 5 Using the mold release agents of Examples 1 to 3 and Comparative Examples 1 to 2, the material of the mold manufacturing model was wood, epoxy resin,
Using an aluminum mold, the mold manufacturing method was repeated 100 times using furan self-hardening method using organic sulfonic acid as a hardening agent, phenol urethane self-hardening method using pyridine-based tertiary amine as a catalyst, and water glass self-hardening method using dicalcium silicate as a hardening agent. Example 1: Molding and measuring the amount of contaminants attached
-10 and Comparative Examples 1-3 were tested. The results are shown in Table 3.
【表】【table】
【表】【table】
Claims (1)
重量％、粘度が１万cps以下の液状油１〜20重量
％及び沸点が200℃以下である有機溶剤30〜97重
量％からなる鋳型模型用離型剤。 ２ 液状油が脂肪酸エステル、多価脂肪酸エステ
ル、フタル酸エステル、シリコン、燐酸エステル
及び流動パラフインからなる群から選ばれる少な
くとも一種である特許請求の範囲第１項記載の離
型剤。 ３ 有機溶剤が、炭素数６〜14の芳香族炭化水
素、炭素数４〜12の脂肪族炭化水素、炭素数５〜
12の脂還族炭化水素、炭素数１〜８のハロゲン化
炭化水素、炭素数２〜12の脂肪族エステル、炭素
数３〜12の脂肪族ケトン及び炭素数１〜12の脂肪
族アルコールからなる群から選ばれる少なくとも
一種である特許請求の範囲第１項記載の離型剤。[Claims] 1. Zinc powder with an average particle size of 5 μm or less 2-50
A mold release agent for a mold model, comprising 1 to 20% by weight of a liquid oil having a viscosity of 10,000 cps or less and 30 to 97% by weight of an organic solvent having a boiling point of 200°C or less. 2. The mold release agent according to claim 1, wherein the liquid oil is at least one selected from the group consisting of fatty acid esters, polyvalent fatty acid esters, phthalic acid esters, silicones, phosphoric acid esters, and liquid paraffin. 3 The organic solvent is an aromatic hydrocarbon having 6 to 14 carbon atoms, an aliphatic hydrocarbon having 4 to 12 carbon atoms, or an aliphatic hydrocarbon having 5 to 12 carbon atoms.
Consists of 12 aliphatic hydrocarbons, halogenated hydrocarbons having 1 to 8 carbon atoms, aliphatic esters having 2 to 12 carbon atoms, aliphatic ketones having 3 to 12 carbon atoms, and aliphatic alcohols having 1 to 12 carbon atoms. The mold release agent according to claim 1, which is at least one selected from the group consisting of:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22378184A JPS61103641A (en) | 1984-10-24 | 1984-10-24 | Parting agent for mold pattern |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22378184A JPS61103641A (en) | 1984-10-24 | 1984-10-24 | Parting agent for mold pattern |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61103641A JPS61103641A (en) | 1986-05-22 |
| JPH0429450B2 true JPH0429450B2 (en) | 1992-05-19 |
Family
ID=16803605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22378184A Granted JPS61103641A (en) | 1984-10-24 | 1984-10-24 | Parting agent for mold pattern |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61103641A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006025368A1 (en) | 2004-08-31 | 2006-03-09 | Aoki Science Institute Co., Ltd. | Mold-releasing agent for oil die casting, method for setting solvent mixing ratio, casting method and spray device |
-
1984
- 1984-10-24 JP JP22378184A patent/JPS61103641A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61103641A (en) | 1986-05-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11420250B2 (en) | Mold material, method of producing the same, and method of producing casting mold | |
| US2965514A (en) | Process for coating particles with a thermosetting phenolic resin | |
| EP3600717B1 (en) | Mould material mixture containing additives for reducing casting defects or as release agent | |
| US3426834A (en) | Expendable pattern for precision investment casting | |
| US2923989A (en) | Self-lubricating shell molds | |
| US2383812A (en) | Mold and fabrication method | |
| JPH0429450B2 (en) | ||
| US2912406A (en) | Shell molding composition containing thermosetting resin and method for making same | |
| US3655414A (en) | Foundry mold process and pattern composition | |
| JPS6186046A (en) | Releast agent for casting mold | |
| US2912402A (en) | Shell molding composition comprising thermosetting phenol-formaldehyde resin, coating agent, and sand, and process for making same | |
| US3801335A (en) | Pattern wax composition | |
| US2668774A (en) | Mold surface coating | |
| JPS6186045A (en) | Release agent for casting mold | |
| JP4820413B2 (en) | Production method of casting core or casting mold | |
| JPS6152954A (en) | Binder composition for gas curable casting mold | |
| US11648605B2 (en) | Halloysite tubes in ester-cured phenolic bonded foundry shapes | |
| JPS61103644A (en) | Production of casting mold | |
| JPS60158944A (en) | Composition for curable casting mold | |
| JPH0352742A (en) | Manufacture of mold | |
| JPS62502455A (en) | Coatings for molds and consumable cores | |
| JP3133158B2 (en) | Coating agent for disintegratable core | |
| JPH08277B2 (en) | Lost wax composition | |
| JPH05245580A (en) | Composition of parting agent for curable casting mold and casting mold formed by using the same | |
| CN110997179B (en) | Composition and method for fire resistant coatings with ester carriers |