JPS6047029B2 - Frozen shell mold manufacturing method - Google Patents
Frozen shell mold manufacturing methodInfo
- Publication number
- JPS6047029B2 JPS6047029B2 JP2937081A JP2937081A JPS6047029B2 JP S6047029 B2 JPS6047029 B2 JP S6047029B2 JP 2937081 A JP2937081 A JP 2937081A JP 2937081 A JP2937081 A JP 2937081A JP S6047029 B2 JPS6047029 B2 JP S6047029B2
- Authority
- JP
- Japan
- Prior art keywords
- frozen
- mold
- shell mold
- mold manufacturing
- frozen shell
- 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
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/12—Treating moulds or cores, e.g. drying, hardening
- B22C9/126—Hardening by freezing
Description
【発明の詳細な説明】
本発明は凍結シェル鋳型の製造方法に関するものである
。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing frozen shell molds.
従来凍結鋳型は鋳型用混合砂を所定量の水と混合し、こ
の混合砂を模型上で所望の形状に圧縮締結した後該鋳型
を取外し、これを冷凍室または液体窒素中に浸漬して鋳
型全体を凍結硬化せしめて作る。Conventionally, freezing molding involves mixing mixed sand for molding with a predetermined amount of water, compressing and fastening this mixed sand into the desired shape on a model, removing the mold, and immersing it in a freezing room or liquid nitrogen to make the mold. It is made by freezing and hardening the whole thing.
然る鋳造に必要な鋳型の厚みは鋳物の材質や重量によつ
て異なるが最も多く生産される量産鋳物は通常鋳枠の大
きさが１００（）ＴＫｍ×１００−以下で、その鋳型て
作られる鋳物は鋳型の厚さが１（ｙｒＷＬ〜３０Ｔｆｒ
ｍ程度あれば十分である。The thickness of the mold required for such casting varies depending on the material and weight of the casting, but the most commonly produced mass-produced castings are usually made with a flask size of 100 () TKm x 100- or less. For castings, the thickness of the mold is 1 (yrWL ~ 30Tfr
It is sufficient if it is about m.
従つてこれ以上の厚みの鋳型を凍結して使用することは
凍結剤の無駄となり不経済であるのみならず生産能率が
悪い欠点がある。本発明はこれらの欠点を除くため所要
厚さの凍結シェル鋳型を迅速に作るよう工夫したもので
ある。Therefore, freezing and using a mold having a thickness greater than this wastes the freezing agent, which is not only uneconomical but also has the drawback of poor production efficiency. In order to eliminate these drawbacks, the present invention is devised to quickly produce frozen shell molds of the required thickness.
次に本発明の実施の態様を図面について詳述する。Next, embodiments of the present invention will be described in detail with reference to the drawings.
図において１は金属製模型板にして、予め液体窒素また
は液化炭素ガスあるいは冷媒液により氷点温度以下に保
持された冷却装置２上に載置され、該模型板台１には鋳
型押出ピン３が設けてある。In the figure, reference numeral 1 denotes a metal model plate, which is placed on a cooling device 2 that has been maintained below the freezing point temperature with liquid nitrogen, liquefied carbon gas, or refrigerant liquid. It is provided.
本発明は前記の如く構成してあるので２〜５％の水分を
含有する鋳型混合砂４を模型板１上に落下充填すれば模
型板が氷点温度以下に冷却されているのでその表面に沿
つて凍結層５を形成する。而してこの凍結層は第２図に
示すグラフの如く増大するから所要の厚さに到達したと
き未凍結の余剰混合砂４を除去し、更に所定の硬度にな
るまて凍結せしめた後鋳型押出ピン３を作動せしめて凍
結層５を剥離せしめ、所望の凍結シェル鋳型を構成する
。本発明は斯の如くして所要の厚さと強度を有する凍結
シェル鋳型を迅速容易に造型し得るので工業的効果があ
る。Since the present invention is constructed as described above, when the mixed molding sand 4 containing 2 to 5% water is dropped and filled onto the model plate 1, the model plate is cooled to below the freezing point temperature, so that the molding mixture sand 4 containing 2 to 5% water is poured along the surface of the model plate 1. Then, a frozen layer 5 is formed. This frozen layer increases as shown in the graph shown in Figure 2, so when the required thickness is reached, the unfrozen excess mixed sand 4 is removed, and the mold is further frozen until it reaches a predetermined hardness. The extruder pin 3 is actuated to peel off the frozen layer 5 to form the desired frozen shell mold. The present invention is thus industrially effective because frozen shell molds having the required thickness and strength can be produced quickly and easily.
また本発明は従来広く使用されているシェルモールド用
ダンプボックスの如き機１器を改造転用することが容易
にできるので省エネルギー上も有効であるのみならず凍
結シェル鋳型は互に水を使用し容易に接着し得る等数多
の効果がある。In addition, the present invention can easily modify and repurpose a single device such as a dump box for shell molds that has been widely used in the past, so it is not only effective in terms of energy conservation, but also the frozen shell molds can easily use water. There are a number of effects that can be adhered to.
丁 第１図は本発明実施例の切断正面図、第２図は同凍
結状態のグラフである。Figure 1 is a cutaway front view of an embodiment of the present invention, and Figure 2 is a graph of the frozen state.
Claims (1)
模型１上に２〜５％の水分を含有した鋳型用混合砂４を
落下充填せしめて該模型表面に所要厚さの凍結層５を形
成せしめた後未凍結の余剰混合砂を除去し、更に凍結強
化後鋳型を剥離することを特徴とする凍結シェル鋳型製
造方法。1 As detailed in the main text, mixed molding sand 4 containing 2 to 5% moisture is dropped onto a metal model 1 cooled to below the freezing point temperature to form a frozen layer 5 of a required thickness on the surface of the model. A method for manufacturing a frozen shell mold, which comprises removing unfrozen surplus mixed sand after forming the mold, and peeling off the mold after freeze strengthening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2937081A JPS6047029B2 (en) | 1981-03-03 | 1981-03-03 | Frozen shell mold manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2937081A JPS6047029B2 (en) | 1981-03-03 | 1981-03-03 | Frozen shell mold manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57146447A JPS57146447A (en) | 1982-09-09 |
| JPS6047029B2 true JPS6047029B2 (en) | 1985-10-19 |
Family
ID=12274257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2937081A Expired JPS6047029B2 (en) | 1981-03-03 | 1981-03-03 | Frozen shell mold manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6047029B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6052523U (en) * | 1983-09-14 | 1985-04-13 | ダイハツ工業株式会社 | Automotive winch clutch operation lever |
| JPH0242112U (en) * | 1988-09-16 | 1990-03-23 |
-
1981
- 1981-03-03 JP JP2937081A patent/JPS6047029B2/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6052523U (en) * | 1983-09-14 | 1985-04-13 | ダイハツ工業株式会社 | Automotive winch clutch operation lever |
| JPH0242112U (en) * | 1988-09-16 | 1990-03-23 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57146447A (en) | 1982-09-09 |
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