JPS6043823B2 - Casting mold with cushioning coating mold - Google Patents
Casting mold with cushioning coating moldInfo
- Publication number
- JPS6043823B2 JPS6043823B2 JP8285581A JP8285581A JPS6043823B2 JP S6043823 B2 JPS6043823 B2 JP S6043823B2 JP 8285581 A JP8285581 A JP 8285581A JP 8285581 A JP8285581 A JP 8285581A JP S6043823 B2 JPS6043823 B2 JP S6043823B2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- coating
- coating material
- casting
- resistance
- 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
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mold Materials And Core Materials (AREA)
Description
【発明の詳細な説明】
本発明は、注湯時における特性がそれぞれ異なる塗型材
を積層した鋳造用シェル鋳型の塗型方法に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a mold coating method for a casting shell mold in which mold coating materials each having different properties during pouring are laminated.
シェル砂等によつて造型する主型および中子は、通常、
その造型面に黒鉛系、ジルコン系基材に粘結材および添
加材を混合した塗型材を、ハケ塗りもしくは浸漬加工に
よつて塗膜を形成し、鋳造時の焼着きおよびベーニング
の発生を防止して＊一、＊いる。The main mold and core molded with shell sand etc. are usually
A coating material made of a graphite-based or zircon-based base material mixed with a binder and additives is applied by brushing or dipping to form a film on the molded surface to prevent burning and vening during casting. There is *one*.
ところが、鋳造の造型面が複雑な形状であつたり、鋳造
品が大形化したりする場合は、溶湯の保有熱、溶湯衝撃
圧、流動エネルギ等の影響をうけて、塗型外れによる介
在物の生じた不良品の発生（たとえばマルチバルブにお
いて不良品割合が５〜１０％）等の不具合がある。そこ
で、黒鉛系、ジルコン系、アセチレンスモークなどの塗
型材料によつて塗型法とその性能の比較鋳造試験を行つ
た結果、塗型法の相違によつて耐焼着き性、耐ベーニン
グ性、耐剥離性に長所、短所のあることが判明した。However, when the casting surface has a complicated shape or the cast product becomes large, inclusions due to the coating coming off the mold are affected by the retained heat of the molten metal, molten metal impact pressure, flow energy, etc. There are problems such as the occurrence of defective products (for example, the percentage of defective products in multi-valves is 5 to 10%). Therefore, we conducted comparative casting tests to compare the coating methods and their performance using coating materials such as graphite-based, zircon-based, and acetylene smoke. It was found that there are advantages and disadvantages in removability.
その結果の一部を示すと下表の如くであつて、黒鉛系と
ジルコン系塗型材を塗着したものは耐焼着き性および耐
ベーニング性が良好であり、アセチレンスモーク系塗型
材を塗着したものは耐ベーニング性および耐剥離性に優
れた結果を示した。（Ｏ良好 △やや良好 ×不良）
本発明は上記実験に基づいてなされたものであり鋳造用
砂型の表面に黒鉛系、ジルコン系等の塗型材の塗膜を形
成して耐焼着き性および耐ベーニング性を具備せしめる
とともに、該塗膜表面に多孔形状の保護被膜を形成して
塗型面にクッション性を付加することにより、従来の鋳
造欠陥を解消し得る鋳造用塗型を提供することを目的と
する。Some of the results are shown in the table below, showing that molds coated with graphite-based and zircon-based coating materials had good seizure resistance and vening resistance, while molds coated with acetylene smoke-based coating materials had good seizing resistance and vening resistance. The material showed excellent results in vening resistance and peeling resistance. (O Good △ Slightly Good × Poor) The present invention was made based on the above experiment, and forms a coating film of graphite-based, zircon-based, etc. mold material on the surface of a sand mold for seizing and veering resistance. The purpose of the present invention is to provide a coating mold for casting which can eliminate conventional casting defects by providing cushioning properties to the coating mold surface by forming a porous protective film on the surface of the coating film. shall be.
以下、本発明を一実施例について詳細に説明する。１は
鋳造用塗型であつて、シェル鋳型１ａの造型面２が下層
塗型材３および上層塗型材４を積層した塗膜５で被覆さ
れてなり、第３図はその断面の一部を拡大して示したも
のである。Hereinafter, the present invention will be described in detail with reference to one embodiment. Reference numeral 1 denotes a coating mold for casting, in which the molding surface 2 of a shell mold 1a is covered with a coating film 5 made by laminating a lower coating material 3 and an upper coating material 4, and FIG. 3 shows an enlarged part of its cross section. This is what was shown.
次に、塗型方法について説明すれば、まず、シェル鋳型
１ａの造型面２に、黒鉛系塗型材にジルコン系塗型材を
加えてなる下層塗型材３（たとえば、りん状黒鉛２酷阪
土状黒鉛（９）部、コークス４０部、ジルコン２部、シ
リカゾル３部およびアルコール適量）をハケ塗りもしく
は浸漬により所定の厚さ（約０．０５〜０．１Ｔｆ０ｒ
Ｌ）に塗着したのち、該下層型材の上面にアセチレンバ
ーナ燃焼によるアセチレンスモークを万遍なく吹きつけ
て所定厚さ（イ）．０５〜０．１Ｔｒ０ｒｔ）の上層塗
型材４を積層し、鋳造用塗型１を形成する。Next, to explain the mold coating method, firstly, a lower coating material 3 (for example, a phosphorescent graphite 2 hard-skinned mold coating material) is applied to the molding surface 2 of the shell mold 1a. Graphite (9 parts, coke 40 parts, zircon 2 parts, silica sol 3 parts, and appropriate amount of alcohol) are brushed or dipped to a predetermined thickness (approximately 0.05 to 0.1 Tf0r).
After coating L), acetylene smoke from acetylene burner combustion is evenly sprayed onto the upper surface of the lower mold material to a predetermined thickness (A). 05 to 0.1Tr0rt) are laminated to form a casting mold 1.
前記上層塗型材４は、その粒状の煤６，６・・・・・・
が相互間に空隙部７，７・・・・・・を存して堆積され
ているので、注湯時における剥離作用を緩和するクッシ
ョン性が具備されている（第１図、第３図）。また、下
層塗型材３は、アセチレンスモークの塗型の際の火焔に
よつて予め熱処理されているので、耐熱性が上昇してい
る。本発明方法は上記の構成により、鋳造用シェル鋳型
の造型面に耐焼着き性および耐ベーニング性を有する下
層塗型材と、耐ベーニング性および耐衝撃性を有する上
層塗型材とを積層状に塗着して、従来の鋳造欠焔を解消
するとともに、上層塗型材は極めて簡単な作業で塗着で
きるので、生産性、作業性がともに向上するという優れ
た効果をもつものである。The upper layer coating material 4 contains the granular soot 6, 6...
are deposited with voids 7, 7, . . In addition, the lower layer coating material 3 has been heat-treated in advance using flames during acetylene smoke coating, and thus has improved heat resistance. According to the above-described structure, the method of the present invention coats the molding surface of a casting shell mold with a lower layer coating material having seizing resistance and vening resistance and an upper layer coating material having vening resistance and impact resistance in a layered manner. As a result, the problem of flame failure in conventional casting is eliminated, and the upper layer coating material can be applied with extremely simple operations, which has the excellent effect of improving both productivity and workability.
図面は本発明方法の実施態様を例示し、第１図および第
２図はそれぞれシェル中子に塗着された上層塗型材およ
び下層塗型材の表面を１，０００倍に拡大した顕微鏡写
真の模写図、第３図は塗型加工された鋳造用塗型の縦断
面の一部を示す拡大図である。
１・・・・・・鋳造用塗型、１ａ・・・・・ウェル鋳型
、２・・・・・・造型面、３・・・・・・下層塗型材、
４・・・・・上層塗型材。The drawings illustrate an embodiment of the method of the present invention, and FIGS. 1 and 2 are reproductions of microscopic photographs magnified 1,000 times of the surfaces of the upper layer coating material and the lower layer coating material applied to the shell core, respectively. FIG. 3 is an enlarged view showing a part of the longitudinal section of the casting mold which has been subjected to the coating process. 1... Coating mold for casting, 1a... Well mold, 2... Molding surface, 3... Lower layer coating material,
4...Top layer coating material.
Claims (1)
系塗型材を加えてなる下層塗型材を被覆したのち、該下
層塗型材の上面に、アセチレンスモークのクッション性
上層塗型材を塗着したことを特徴とするクッション性塗
型を施工した鋳造用塗型。1. After coating the molding surface of a shell mold, etc. with a lower coating material made by adding a zircon coating material to a graphite coating material, a cushioning upper layer coating material of acetylene smoke was applied to the upper surface of the lower coating material. A casting mold with a cushioning coating mold characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8285581A JPS6043823B2 (en) | 1981-05-29 | 1981-05-29 | Casting mold with cushioning coating mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8285581A JPS6043823B2 (en) | 1981-05-29 | 1981-05-29 | Casting mold with cushioning coating mold |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57195553A JPS57195553A (en) | 1982-12-01 |
| JPS6043823B2 true JPS6043823B2 (en) | 1985-09-30 |
Family
ID=13785969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8285581A Expired JPS6043823B2 (en) | 1981-05-29 | 1981-05-29 | Casting mold with cushioning coating mold |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6043823B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2632313C1 (en) * | 2016-11-22 | 2017-10-03 | Федеральное государственное автономное образовательное учреждение высшего образования "Сибирский федеральный университет" | Antiburning paint for moulds and cores |
-
1981
- 1981-05-29 JP JP8285581A patent/JPS6043823B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57195553A (en) | 1982-12-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3196506A (en) | Method of making a shell mold by lost wax process | |
| JPH01293939A (en) | Manufacture of mold for investment casting | |
| US3063113A (en) | Disposable pattern with lower melting external coating | |
| JPH02182343A (en) | Shell modle for manufacturing metal spring | |
| JPS6043823B2 (en) | Casting mold with cushioning coating mold | |
| JP4925289B2 (en) | Method for producing a gypsum mold for casting | |
| JPH02133154A (en) | Method of coating surface with soot | |
| US2426988A (en) | Mold coating | |
| US3605855A (en) | Process for the making of metal moulds for a casting | |
| JP3339675B2 (en) | Mold making method and casting method | |
| US3489202A (en) | Production of castings | |
| JPH04333343A (en) | Manufacture of ceramic shell mold | |
| US2754570A (en) | Method of producing a cast alloy coated oxidizable metal article | |
| JPH0663683A (en) | Production of casting mold | |
| JPH0813400B2 (en) | Precision casting method for castings having a narrow hollow portion | |
| JPH03447A (en) | Facing material for metallic mold for casting | |
| JP3552298B2 (en) | Mold for hot impeller casting | |
| JP4421466B2 (en) | Slurry for casting mold and mold obtained using the same | |
| US2848772A (en) | Self-lubricating shell molds | |
| JPH02211928A (en) | Improvement of shell mold | |
| JPS589740A (en) | Mold coating method into multiple layers | |
| JPH0698459B2 (en) | Core for pressure casting and manufacturing method thereof | |
| JPH0372372B2 (en) | ||
| JPS63260656A (en) | Placing core for pressure casting | |
| JPS6347395Y2 (en) |