JP2632678B2 - Cooling method for casting products - Google Patents
Cooling method for casting productsInfo
- Publication number
- JP2632678B2 JP2632678B2 JP62030958A JP3095887A JP2632678B2 JP 2632678 B2 JP2632678 B2 JP 2632678B2 JP 62030958 A JP62030958 A JP 62030958A JP 3095887 A JP3095887 A JP 3095887A JP 2632678 B2 JP2632678 B2 JP 2632678B2
- Authority
- JP
- Japan
- Prior art keywords
- fluidized
- cast product
- main body
- cooling
- cooled
- 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 - Lifetime
Links
- 238000001816 cooling Methods 0.000 title claims description 22
- 238000005266 casting Methods 0.000 title claims description 6
- 239000002245 particle Substances 0.000 claims description 23
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 238000010583 slow cooling Methods 0.000 claims description 9
- 239000000843 powder Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 description 6
- 238000005520 cutting process Methods 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- 239000007921 spray Substances 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011361 granulated particle Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D30/00—Cooling castings, not restricted to casting processes covered by a single main group
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 この発明は、高温の鋳造製品の冷却方法に関するもの
である。Description: TECHNICAL FIELD The present invention relates to a method for cooling a high-temperature cast product.
従来の技術 一般に注湯から型ばらしした鋳造製品の熱処理は、表
面の温度が800゜〜900℃の高温のものを徐冷ラインのエ
プロンコンベアで製品の安定する変態点の730℃前後ま
で自然保冷し、その後500℃にまで下げられた製品を散
水によつて常温まで急冷を行ない、次の清浄、鋳仕上げ
等の工程へと搬送している。Conventional technology Generally, in the heat treatment of cast products that have been separated from a molten metal by pouring, those with a high surface temperature of 800 to 900 ° C are naturally cooled to around 730 ° C, the transformation point where the product is stable, using an apron conveyor in a slow cooling line. After that, the product cooled to 500 ° C is rapidly cooled to normal temperature by sprinkling water and transported to the next process such as cleaning and casting.
発明が解決しようとする問題点 上記従来の散水徐冷作業を行なうまでの製品の冷却温
度は徐冷ラインのコンベアの長さによつて定まつている
ために製品の肉厚、その他の条件によつては、所定の温
度まで冷却されず、製品の温度にばらつきがあるにもか
かわらず、散水急冷が行なわれるために製品の硬度組織
等にばらつきが生じ易く、例えば製品の肉厚が30mm以上
の場合に製品の表面温度と内部との温度差が100℃もの
差が生ずる場合があり、そのために製品の硬度組織にば
らつきが生じ製品内部に応力が残つたものを、そのまま
次の清浄鋳仕上げ工程に移送した場合に刃具の寿命が短
かく、常に刃具を取り換える必要があり、さらに寸法精
度、面粗度等にも大きな影響が生ずる問題点がある。Problems to be Solved by the Invention The cooling temperature of the product before performing the conventional water sprinkling slow cooling operation is determined by the length of the conveyor of the slow cooling line. Therefore, the product is not cooled down to a predetermined temperature, and although the product temperature varies, the product has a hardness structure and the like that is easily scattered due to water spray quenching.For example, the product thickness is 30 mm or more. In this case, the temperature difference between the surface temperature and the inside of the product may be as high as 100 ° C, so that the hardness structure of the product varies and the stress inside the product remains, and the next clean casting finish When transferred to the process, the life of the cutting tool is short, and it is necessary to constantly replace the cutting tool, and there is a problem that dimensional accuracy, surface roughness, and the like are greatly affected.
問題点を解決するための手段 この発明は、鋳造製品の硬度組織を安定させ、ばらつ
きのない鋳造製品を得ることを目的とするものであり、
注湯型ばらしした鋳造製品を、徐冷ラインのエプロンコ
ンベアで500℃まで自然冷却する工程と、流動粒子炉本
体の底部に設けた与圧室からの高圧空気を噴出す水平多
孔板と、該水平多孔板と平行に数段配設した流動粒子炉
本体内の水冷パイプとで、流動粒子炉本体内に充填した
微粉状のアルミナを、前記水平多孔板から噴出する高圧
空気と前記水冷パイプにより冷却流動化させる工程と、
前記500℃まで自然冷却した鋳造製品を前記流動粒子炉
本体内に搬入し、該鋳造製品が流動粒子炉内を通過する
間、前記冷却流動化させた微粉状のアルミナを該鋳造製
品に当接させ、該鋳造製品の流動粒子炉本体からの搬出
時には該鋳造製品を常温まで冷却する工程とから成る鋳
造製品の冷却方法としたことである。Means for solving the problems The present invention is intended to stabilize the hardness structure of the cast product, and to obtain a cast product without variation,
A process of spontaneously cooling the casting product separated from the pouring mold to 500 ° C. by an apron conveyor of a slow cooling line, a horizontal perforated plate for blowing high-pressure air from a pressurized chamber provided at a bottom of a fluidized particle furnace main body, With water cooling pipes in the fluidized particle furnace main body arranged in parallel with the horizontal perforated plate, the alumina in the form of fine powder filled in the fluidized particle furnace main body is compressed by high-pressure air ejected from the horizontal perforated plate and the water cooling pipe. Cooling and fluidizing;
The cast product naturally cooled to 500 ° C. is carried into the fluidized particle furnace main body, and while the cast product passes through the fluidized particle furnace, the cooled and fluidized powdery alumina is brought into contact with the cast product. And cooling the cast product to room temperature when the cast product is carried out of the fluidized particle furnace main body.
作用 徐冷ラインのエプロンコンベアにて大気中で製品の安
定する変態点まで自然保冷した鋳造製品を流動粒子炉中
に搬送通過させ、その際に流動粒子炉内に充填したアル
ミナに搬入製品によつて予かじめ設定した所定温度を有
する冷却エアを吹き込んでアルミナを流動させ、該冷却
アルミナによつて製品の表面から内部までを粒動粒子炉
の通過中に冷却させるもので熱伝導等が悪いとされてい
るアルミナを流動下させることによつて熱伝導等を良く
し、該アルミナを製品の表面に均一に当接冷却させるの
で、製品を常温まで冷却することができる。The cast product naturally cooled in the apron conveyor of the slow cooling line to the stable transformation point of the product in the atmosphere is transported and passed through the fluidized-particle furnace, and at that time, the product is transferred to the alumina filled in the fluidized-particle furnace. Then, cooling air having a predetermined temperature set in advance is blown to cause the alumina to flow, and the cooled alumina is used to cool the product from the surface to the inside while passing through the particle-granulated particle furnace, and has poor heat conduction and the like. The heat conduction and the like are improved by flowing down the alumina, which has been described above, and the alumina is uniformly contacted and cooled on the surface of the product, so that the product can be cooled to room temperature.
実施例 この発明を一実施例を図面により説明すると第１図及
び第２図は流動粒子炉の縦断面図であり、１は鋳造製品
を冷却するための流動粒子炉本体で、該炉の底部２に
は、内容物流動化用水平多孔板３を設け、またブロア４
から与圧室５に供給される矢印4aで示される高圧空気に
よつて多孔板３を通して流動化されるアルミナ６を充填
すると共に、該アルミナ６を冷却するための水冷パイプ
７を設け、また流動粒子炉本体１の上方部に徐冷ライン
により徐冷された鋳造製品10を炉本体１内に搬入するた
めのコンベア８を設け、さらに、該炉の天井部９に排気
ダクト11を設けた構成よりなるものである。DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the drawings. FIG. 1 and FIG. 2 are longitudinal sectional views of a fluidized particle furnace. 1 is a fluidized particle furnace main body for cooling a cast product. 2 is provided with a horizontal perforated plate 3 for fluidizing the contents and a blower 4.
Is filled with alumina 6 which is fluidized through the perforated plate 3 by high-pressure air indicated by an arrow 4a supplied to the pressurizing chamber 5 from above, and a water-cooling pipe 7 for cooling the alumina 6 is provided. A conveyor 8 is provided above the particle furnace main body 1 for carrying a cast product 10 gradually cooled by a slow cooling line into the furnace main body 1, and further, an exhaust duct 11 is provided on a ceiling 9 of the furnace. Consisting of
而して型ばらし直後800℃〜900℃ある鋳造製品を従前
の徐冷装置と同様の徐冷ラインのエプロンコンベア（図
示せず）にて製品の組成が安定する変態温度より低い50
0℃にまで大気中で徐冷却した鋳造製品10を前記コンベ
ア８にて流動粒子炉本体１内に搬送し、該流動粒子炉本
体に充填されたアルミナ６を水冷パイプ７にて冷却され
且つ与圧室５から噴出したエアによつて冷却流動化さ
せ、該微粉状のアルミナ６をコンベア８にて炉内を搬送
通過する鋳造製品10の表面に当接させ冷却させるので、
炉本体１内を通過し、常温までに冷却した鋳造製品10a
を次の作業区に送るものである。Immediately after unmolding, the cast product at 800 ° C to 900 ° C is cooled by an apron conveyor (not shown) in a slow cooling line similar to the conventional slow cooling device, at a temperature lower than the transformation temperature at which the product composition is stabilized.
The cast product 10 gradually cooled to 0 ° C. in the atmosphere is conveyed into the fluidized particle furnace main body 1 by the conveyor 8, and the alumina 6 filled in the fluidized particle furnace main body is cooled and given by the water cooling pipe 7. The air is blown from the pressure chamber 5 to cool and fluidize the air, and the fine alumina powder 6 is brought into contact with the surface of the cast product 10 which is conveyed and passed through the furnace by the conveyor 8 and cooled.
Cast product 10a that has passed through the furnace body 1 and cooled to room temperature
To the next work center.
なお、流動粒子炉本体１内に充填されたアルミナの冷
却温度は、鋳造製品10の材質・形状、例えば肉厚及び鋳
造製品の温度を温度センサーにより感知させて、所要温
度を設定し、水冷パイプ中を流れる水温、水量等を調節
して所定温度にするもので例えば、肉厚30mmの鋳造製品
が500℃まで徐冷されている場合に、アルミナの温度を1
00℃位になる様に調整し、該アルミナを流動化させた炉
内に前記鋳造製品７〜10分間かけて炉内を移動させるこ
とにより炉外に出たときには常温までに製品の温度を下
げる鋳造製品の冷却方法である。The cooling temperature of the alumina charged in the fluidized particle furnace main body 1 is determined by detecting the material and shape of the cast product 10, for example, the wall thickness and the temperature of the cast product by a temperature sensor, and setting the required temperature. The temperature of the water flowing through it, the amount of water, etc. are adjusted to a predetermined temperature.For example, when a cast product having a thickness of 30 mm is gradually cooled to 500 ° C., the temperature of alumina is set to 1
The temperature is adjusted to about 00 ° C., and the cast product is moved in the furnace for 7 to 10 minutes in a furnace in which the alumina is fluidized to lower the temperature of the product to room temperature when the product is out of the furnace. This is a method of cooling a cast product.
発明の効果 この発明は上述の如く大気中で徐冷却された鋳造製品
を散水冷却による急速冷却する方法と異なつて流動粒子
炉内で流動微粉の冷却アルミナにて製品の表面を冷却す
るので鋳造製品の肉厚にかかわりなく、外面と内部との
温度差のない均一温度に冷却でき、また肉厚が仮に30mm
以上ある製品であつても従来の場合表面と内部との温度
差が100℃近くあつたものに比して30℃以下にすること
ができるので、硬度組織が安定し、残留応力が少ないの
で、従つてそれぞれ安定した製品が得られるために清浄
鋳仕上げ工程に移送した場合に刃具の取換など少なくて
もすみまた寸法、精度、面粗度等に於ても安定したもの
となる。Effect of the Invention The present invention is different from the method of rapidly cooling a cast product slowly cooled in the air by water spray cooling as described above, and the surface of the product is cooled by cooling alumina of fluidized fine powder in a fluidized particle furnace, so that the cast product is cooled. Regardless of the wall thickness, it can be cooled to a uniform temperature with no temperature difference between the outer surface and the inner part.
Even in the case of the above products, the temperature difference between the surface and the interior can be reduced to 30 ° C or less compared to the case where the temperature is close to 100 ° C in the past, so the hardness structure is stable and the residual stress is small, Therefore, in order to obtain stable products, when the products are transferred to the clean casting finishing step, the dimensions, accuracy, surface roughness, etc., which are at least as small as replacement of the cutting tools, are stable.
第１図及び第２図は夫々本発明に用いる流動粒子炉の縦
断面である。 １……流動粒子炉本体 ３……多孔板 ４……エア ５……与圧室 ６……アルミナ ７……水冷パイプ ８……コンベア 10……徐冷鋳造製品1 and 2 are longitudinal sectional views of a fluidized particle furnace used in the present invention, respectively. 1 Fluid particle furnace body 3 Perforated plate 4 Air 5 Pressurized chamber 6 Alumina 7 Water-cooled pipe 8 Conveyor 10 Slow-cooled cast product
Claims (1)
のエプロンコンベアで500℃まで自然冷却する工程と、
流動粒子炉本体の底部に設けた与圧室からの高圧空気を
噴出す水平多孔板と、該水平多孔板と平行に数段配設し
た流動粒子炉本体内の水冷パイプとで、流動粒子炉本体
内に充填した微粉状のアルミナを、前記水平多孔板から
噴出する高圧空気と前記水冷パイプにより冷却流動化さ
せる工程と、前記500℃まで自然冷却した鋳造製品を前
記流動粒子炉本体内に搬入し、該鋳造製品が流動粒子炉
内を通過する間、前記冷却流動化させた微粉状のアルミ
ナを該鋳造製品に当接させ、該鋳造製品の流動粒子炉本
体からの搬出時には該鋳造製品を常温まで冷却する工程
とから成る鋳造製品の冷却方法。(1) a step of spontaneously cooling a casting product separated from a pouring mold to 500 ° C. by an apron conveyor of a slow cooling line;
A horizontal perforated plate for jetting high pressure air from a pressurized chamber provided at the bottom of the fluidized particle furnace main body, and a water cooling pipe in the fluidized particle furnace main body arranged in several stages parallel to the horizontal perforated plate, form a fluidized particle furnace. A step of cooling and fluidizing the fine-powder alumina filled in the main body by high-pressure air ejected from the horizontal perforated plate and the water-cooled pipe, and carrying the cast product naturally cooled to 500 ° C. into the fluidized particle furnace main body. While the cast product passes through the fluidized-particle furnace, the cooled and fluidized fine-powder alumina is brought into contact with the cast product, and when the cast product is carried out of the fluidized-particle furnace main body, the cast product is removed. Cooling the cast product to a room temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62030958A JP2632678B2 (en) | 1987-02-13 | 1987-02-13 | Cooling method for casting products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62030958A JP2632678B2 (en) | 1987-02-13 | 1987-02-13 | Cooling method for casting products |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63199817A JPS63199817A (en) | 1988-08-18 |
| JP2632678B2 true JP2632678B2 (en) | 1997-07-23 |
Family
ID=12318188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62030958A Expired - Lifetime JP2632678B2 (en) | 1987-02-13 | 1987-02-13 | Cooling method for casting products |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2632678B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107790690A (en) * | 2017-10-09 | 2018-03-13 | 铜陵安东铸钢有限责任公司 | A kind of complicated large-scale steel-casting hot shake-out annealing device |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103014272A (en) * | 2012-11-30 | 2013-04-03 | 无锡透平叶片有限公司 | Air-cooling chamber structure capable of improving cooling uniformity |
| CN104162650A (en) * | 2014-07-28 | 2014-11-26 | 洛阳王力重型机械有限公司 | Retarded cooling chamber special for hot casting |
| WO2020012222A1 (en) * | 2018-07-11 | 2020-01-16 | Arcelormittal | Method to control the cooling of a metal product |
| WO2020012221A1 (en) * | 2018-07-11 | 2020-01-16 | Arcelormittal | Method of heat transfer and associated device |
| CN109128109A (en) * | 2018-07-28 | 2019-01-04 | 宁国市金优机械配件有限公司 | A kind of cooling device for ironcasting with remote manipulator |
| CN109434084B (en) * | 2018-09-30 | 2020-07-31 | 含山县全兴内燃机配件有限公司 | Production of marine diesel cylinder head is with spraying cooling formula cold water jar |
| CN109365791B (en) * | 2018-09-30 | 2020-07-31 | 含山县全兴内燃机配件有限公司 | Cold water tank for producing cylinder cover of marine high-power engine |
| CN109202048B (en) * | 2018-09-30 | 2020-07-31 | 含山县全兴内燃机配件有限公司 | Device for improving stability of cold water tank for machining nodular cast iron cylinder cover of engine |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS537122A (en) * | 1976-07-09 | 1978-01-23 | Toshiba Corp | Pickup device using electric charge element |
| JPS59107018A (en) * | 1982-12-08 | 1984-06-21 | Mazda Motor Corp | Heat treatment of cast iron parts |
| JPS61159359U (en) * | 1985-03-20 | 1986-10-02 |
-
1987
- 1987-02-13 JP JP62030958A patent/JP2632678B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107790690A (en) * | 2017-10-09 | 2018-03-13 | 铜陵安东铸钢有限责任公司 | A kind of complicated large-scale steel-casting hot shake-out annealing device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63199817A (en) | 1988-08-18 |
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