JPH0133274B2 - - Google Patents
Info
- Publication number
- JPH0133274B2 JPH0133274B2 JP55074399A JP7439980A JPH0133274B2 JP H0133274 B2 JPH0133274 B2 JP H0133274B2 JP 55074399 A JP55074399 A JP 55074399A JP 7439980 A JP7439980 A JP 7439980A JP H0133274 B2 JPH0133274 B2 JP H0133274B2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- thin
- thick
- hot water
- heat
- 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
- 238000005266 casting Methods 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 238000001816 cooling Methods 0.000 description 10
- 239000012530 fluid Substances 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000002826 coolant Substances 0.000 description 2
- 238000005336 cracking Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/06—Permanent moulds for shaped castings
- B22C9/065—Cooling or heating equipment for moulds
Description
【発明の詳細な説明】
この発明は、各種物品を鋳造する際に使用する
金型の改良に関し、内部に流し込まれた湯（溶融
金属）の冷却速度の均一化により製品の品質を向
上させる該金型を得ることを目的とした発明であ
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the improvement of molds used for casting various articles, and is directed to improving the quality of products by making the cooling rate of hot water (molten metal) poured into the mold more uniform. This invention aims to obtain a mold.
金型に湯を流し込んで各種物品を製作する場
合、物品の肉厚が部分によつて大きく異なると、
各部分に於ける湯の冷却速度にばらつきを生じ
る。即ち、肉厚の小さい部分は冷却速度が早く、
大きい部分は遅くなる。このため、薄肉部には急
冷による硬化、亀裂等の欠陥が、厚肉部には引け
巣、多孔化等の欠陥が発生し易く、製品の品質が
悪くなる。 When manufacturing various products by pouring hot water into molds, if the wall thickness of the product varies greatly depending on the part,
This causes variations in the cooling rate of hot water in each part. In other words, the cooling rate is faster in parts with smaller wall thickness;
Larger parts will be slower. For this reason, defects such as hardening and cracking due to rapid cooling are likely to occur in thin-walled portions, and defects such as shrinkage cavities and porosity are likely to occur in thick-walled portions, resulting in poor product quality.
本発明は上述のような不都合のない鋳造用金型
を提供せんとするものである。 The present invention aims to provide a casting mold free from the above-mentioned disadvantages.
以下、実施例を示す図面により本発明を説明す
る。 The present invention will be explained below with reference to drawings showing examples.
金型１ａ，１ｂにより形成される空間２内には
湯３が流し込まれている。空間２の幅は場所によ
り異なり、湯３が冷却固化して得られる鋳物製品
には厚肉部４と薄肉部５とが形成される。６はヒ
ートパイプで、第２図のように管内に作用流体７
を封入し、一端部から熱を受入れて作用流体を昇
温または蒸発させ、他端部で放熱し、蒸発した流
体を凝縮させるように作用するものである。該ヒ
ートパイプ６の一端は厚肉部４の近傍に、他端は
薄肉部５の近傍に位置するようにしてそれぞれ金
型１ａ，１ｂに組込まれる。なお、ヒートパイプ
については従来から周知であるため詳しい説明は
省略し、凝縮した流体を還流させるためのウイツ
ク（例えば、うすい金網を重ねた毛管力の大きい
構造体）の図示も省略した。 Hot water 3 is poured into a space 2 formed by the molds 1a and 1b. The width of the space 2 varies depending on the location, and a thick part 4 and a thin part 5 are formed in the cast product obtained by cooling and solidifying the hot water 3. 6 is a heat pipe, and as shown in Fig. 2, a working fluid 7 is inserted into the pipe.
It receives heat from one end to heat up or evaporate the working fluid, radiates heat at the other end, and condenses the evaporated fluid. The heat pipe 6 is assembled into the molds 1a and 1b so that one end is located near the thick wall portion 4 and the other end is located near the thin wall portion 5, respectively. Note that heat pipes are well known, so a detailed explanation is omitted, and illustrations of a mechanism for circulating condensed fluid (for example, a structure with a large capillary force made by stacking thin wire meshes) are also omitted.
本発明の鋳造用金型は上述のように構成される
ため、金型１ａ，１ｂに囲まれる空間２内に湯３
を流し込むと、該湯３の冷却につれて厚肉部４の
熱が図中矢印で示すようにヒートパイプ６の作用
で薄肉部５に伝わり、両部４，５の温度差を少な
くする。このため、空間２内の湯３は全体に亘つ
てほぼ均等に冷却され、冷却速度の不均一による
上述のような種々の欠陥の発生を防止できる。 Since the casting mold of the present invention is constructed as described above, hot water 3 is placed in the space 2 surrounded by the molds 1a and 1b.
When the hot water 3 is poured, as the hot water 3 cools, the heat in the thick wall portion 4 is transferred to the thin wall portion 5 by the action of the heat pipe 6 as shown by the arrow in the figure, thereby reducing the temperature difference between the two portions 4 and 5. Therefore, the hot water 3 in the space 2 is cooled almost uniformly throughout, and the various defects described above due to non-uniform cooling rates can be prevented from occurring.
本発明の鋳造用金型は、上述のように簡単な構
成で品質の良好な鋳物製品を得られる金型として
産業上の効果が大きい。 The casting mold of the present invention has a great industrial effect as a mold that can obtain a cast product of good quality with a simple configuration as described above.
なお、金型内に冷却剤流通路を形成し、冷却剤
流量を調整して厚肉部の冷却力を強くし薄肉部の
冷却力を弱くすることが特開昭49−98331号公報
に記載されているが、このものは金型を冷却する
ことのみを考慮したものであつて、厚肉部と薄肉
部との間で熱を移動させて厚肉部の冷却を進め、
薄肉部の冷却を緩徐にして、全体として湯を均一
に冷却する本発明とは別異である。又、金型をヒ
ートパイプを使つて冷却又は加熱することが特開
昭50−148227号公報に記載されているが、このも
のは金型全体を冷却又は加熱するものであつて、
厚肉部、薄肉部を有する物品を鋳造する金型の厚
肉部近傍の熱を薄肉部近傍に移動させるものでは
なく、本発明と別異のものである In addition, Japanese Patent Application Laid-Open No. 1983-98331 describes that a coolant flow path is formed in the mold and the coolant flow rate is adjusted to increase the cooling power for thick-walled parts and weaken the cooling power for thin-walled parts. However, this method is designed only to cool the mold, and heat is transferred between the thick wall part and the thin wall part to advance cooling of the thick wall part.
This is different from the present invention, which cools the thin-walled portion slowly and cools the hot water uniformly as a whole. Furthermore, JP-A-50-148227 describes cooling or heating a mold using a heat pipe, but this method cools or heats the entire mold,
This method is different from the present invention because it does not transfer the heat near the thick part of a mold for casting an article having thick and thin parts to the vicinity of the thin part.
第１図は本発明による金型の実施例を示す断面
図、第２図はヒートパイプの端部縦断面図であ
る。
１ａ，１ｂ：金型、２：空間、３：湯、４：厚
肉部、５：薄肉部、６：ヒートパイプ。
FIG. 1 is a sectional view showing an embodiment of a mold according to the present invention, and FIG. 2 is a longitudinal sectional view of an end portion of a heat pipe. 1a, 1b: mold, 2: space, 3: hot water, 4: thick part, 5: thin part, 6: heat pipe.
Claims (1)
めの鋳造用金型であつて、該金型内にヒートパイ
プ６の両端を、その一端が上記厚肉部４を鋳造す
る部分の近傍に位置するように、その他端が上記
薄肉部５を鋳造する部分の近傍に位置するように
組込み、これにより厚肉部４の熱が上記ヒートパ
イプ６の作用により薄肉部に伝わり、両部４，５
の温度差が少なくなるように構成したことを特徴
とする鋳造用金型。1 A casting mold for manufacturing a product having a thick wall part 4 and a thin wall part 5, in which both ends of a heat pipe 6 are placed, one end of which is the part where the thick wall part 4 is to be cast. The thin wall portion 5 is assembled so that the other end is located near the portion where the thin wall portion 5 is to be cast, so that the heat of the thick wall portion 4 is transmitted to the thin wall portion by the action of the heat pipe 6, and both parts are assembled. 4,5
A casting mold characterized in that it is configured to reduce the temperature difference between the two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7439980A JPS571540A (en) | 1980-06-04 | 1980-06-04 | Metallic casting mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7439980A JPS571540A (en) | 1980-06-04 | 1980-06-04 | Metallic casting mold |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS571540A JPS571540A (en) | 1982-01-06 |
| JPH0133274B2 true JPH0133274B2 (en) | 1989-07-12 |
Family
ID=13546062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7439980A Granted JPS571540A (en) | 1980-06-04 | 1980-06-04 | Metallic casting mold |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS571540A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0771736B2 (en) * | 1985-12-24 | 1995-08-02 | 株式会社東芝 | Rotor manufacturing method |
| JP2501412Y2 (en) * | 1989-05-22 | 1996-06-19 | カルソニック株式会社 | Stainless steel casting parts |
| US5213149A (en) * | 1991-10-10 | 1993-05-25 | Cmi International, Inc. | Mold and method for making variable thickness cast articles |
| US5421397A (en) * | 1993-01-19 | 1995-06-06 | Hembree; Robert K. | Method of and system for casting engine blocks having defect free thin walls |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4998331A (en) * | 1973-01-25 | 1974-09-18 | ||
| JPS50148227A (en) * | 1974-05-21 | 1975-11-27 |
-
1980
- 1980-06-04 JP JP7439980A patent/JPS571540A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4998331A (en) * | 1973-01-25 | 1974-09-18 | ||
| JPS50148227A (en) * | 1974-05-21 | 1975-11-27 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS571540A (en) | 1982-01-06 |
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