JPS6260182B2 - - Google Patents
Info
- Publication number
- JPS6260182B2 JPS6260182B2 JP4211880A JP4211880A JPS6260182B2 JP S6260182 B2 JPS6260182 B2 JP S6260182B2 JP 4211880 A JP4211880 A JP 4211880A JP 4211880 A JP4211880 A JP 4211880A JP S6260182 B2 JPS6260182 B2 JP S6260182B2
- Authority
- JP
- Japan
- Prior art keywords
- wax
- steam
- water
- autoclave
- vacuum
- 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
- 238000000034 method Methods 0.000 claims description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 239000012535 impurity Substances 0.000 claims description 7
- 238000007710 freezing Methods 0.000 claims description 5
- 230000008014 freezing Effects 0.000 claims description 5
- 238000011084 recovery Methods 0.000 claims description 4
- 238000005266 casting Methods 0.000 claims description 2
- 238000001816 cooling Methods 0.000 claims 1
- 239000000203 mixture Substances 0.000 description 8
- 238000005495 investment casting Methods 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 230000008929 regeneration Effects 0.000 description 3
- 238000011069 regeneration method Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 208000015943 Coeliac disease Diseases 0.000 description 2
- 238000010924 continuous production Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000000859 sublimation Methods 0.000 description 2
- 230000008022 sublimation Effects 0.000 description 2
- 238000005496 tempering Methods 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000004108 freeze drying Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
- B22C9/04—Use of lost patterns
- B22C9/043—Removing the consumable pattern
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Description
【発明の詳細な説明】
本発明はロスト・ワツクス鋳造法の蒸気脱ろう
法におけるワツクス回収方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for recovering wax in a steam dewaxing process in a lost wax casting process.
更に詳細には、ロスト・ワツクス鋳造法の蒸気
脱ろう法において、オートクレーブから取り出し
たワツクスから不純物を除去し、その後ワツクス
を冷却凍結して真空状態で昇華させ水分を取り除
くようにすることにより、ワツクスの組成、ワツ
クスの特性に変化を生じさせることなくワツクス
を回収するようにし、模型形成用ワツクスの再使
用を図つて材料費の高騰を低減するようにしたロ
スト・ワツクス鋳造法の蒸気脱ろう法におけるワ
ツクス回収方法に関する。 More specifically, in the vapor dewaxing method of the lost wax casting method, impurities are removed from the wax taken out from the autoclave, and then the wax is cooled and frozen and sublimated in a vacuum to remove moisture. A steam dewaxing method for lost wax casting that recovers wax without causing any changes in the composition or properties of the wax, thereby reusing model-forming wax and reducing material costs. This invention relates to a wax collection method.
ロスト・ワツクス鋳造法においては、製品模型
や湯道、湯口等を予めワツクスで形成し、これら
を組立ててツリーと呼ばれるワツクス模型を形成
し、この模型の表面に耐火物を被覆し鋳型を形成
する。鋳型完成後鋳型を乾燥した後、鋳型内のワ
ツクスに熱を加えて鋳型より抜き出す。これを脱
ろうという。 In the lost wax casting method, the product model, runners, sprues, etc. are formed in advance with wax, and these are assembled to form a wax model called a tree.The surface of this model is coated with a refractory material to form a mold. . After the mold is completed and dried, the wax inside the mold is heated and extracted from the mold. I'm trying to take this off.
上記脱ろう方法には種々の方法があり、以前ま
では、重油等で脱ろうを大部分燃やしてしまう熱
衝撃法が広く用いられていたが、現在は石油資源
の供給減少に鑑み使用したワツクスの回収・再生
を企図し得る蒸気脱ろう法が最も広く用いられて
いる。この蒸気脱ろう法はコーテイングしたワツ
クス模型を湯口を下にしてオートクレーブ内にお
さめ、150℃程度の蒸気で加熱し短時間で脱ろう
する方法である。この方法は回収するワツクスの
組成、特性に変化を生じることが少ないという利
点を有するが、他方においてオートクレーブ内で
短時間のうちに過飽和水蒸気によつて脱ろうされ
たワツクスは、一定時間の後にオートクレーブか
ら取り出されるため、蒸発潜熱を奪われて凝結し
た水がワツクスの中に混入するという欠点を有す
る。従つて金型から回収されたワツクスを再度模
型成形に使用するためにはワツクス内の不純物や
水分を除去してワツクスの品質を高める必要があ
る。従来のワツクスの回収・再生方法においては
熱処理法や遠心分離法等による処理が行なわれて
いたが、これらの方法ではワツクスに比較的長時
間の間熱を加えたり、ワツクスを一定の温度に保
持したりする必要があるため、ワツクスの組成に
変化が生じ易く、再使用に際してワツクスの特性
に問題が生じ好ましいものではなかつた。又、前
記方法では、ワツクスと水の凝固点の相違を利用
して両者を分離するため溶融ワツクスを固化させ
たり、溶解させたりしなければならず、熱損失が
大きくなる等の問題をも惹起せしめていた。 There are various methods for dewaxing, and in the past, the thermal shock method, which burns off most of the dewaxing material with heavy oil, was widely used, but now, in view of the decreasing supply of petroleum resources, wax is used. The most widely used method is steam dewaxing, which allows for the recovery and regeneration of carbon dioxide. This steam dewaxing method involves placing the coated wax model in an autoclave with the sprue facing down and heating it with steam at about 150°C to dewax it in a short time. This method has the advantage of causing little change in the composition and properties of the wax to be recovered, but on the other hand, wax that has been dewaxed by supersaturated steam in an autoclave for a short period of time cannot be removed from the autoclave after a certain period of time. Since the water is taken out from the wax, it has the disadvantage that the latent heat of vaporization is taken away and the water condenses and mixes into the wax. Therefore, in order to use the wax recovered from the mold for molding a model again, it is necessary to improve the quality of the wax by removing impurities and moisture within the wax. Conventional methods for collecting and recycling wax have involved heat treatment, centrifugation, etc., but these methods involve applying heat to the wax for a relatively long period of time or maintaining the wax at a constant temperature. As a result, the composition of the wax tends to change, which causes problems with the properties of the wax when it is reused, which is not desirable. Furthermore, in the above method, the molten wax must be solidified or melted in order to separate the two by utilizing the difference in freezing point of wax and water, which also causes problems such as increased heat loss. was.
本発明者は上記した問題点に鑑み、これを有効
に解決すべく本発明を成したものである。 In view of the above-mentioned problems, the present inventors have created the present invention to effectively solve the problems.
本発明の目的は、オートクレーブから取り出し
たワツクスから不純物を除去した後、ワツクスを
急速に冷却して凍結し、凍結したワツクスを真空
状態で昇華させ、ワツクスから水分を除去するよ
うにしたロスト・ワツクス鋳造法の蒸気脱ろう法
におけるワツクス回収方法を提供することにあ
る。 The object of the present invention is to remove impurities from wax taken out from an autoclave, then rapidly cool and freeze the wax, sublimate the frozen wax in a vacuum, and remove moisture from the wax. An object of the present invention is to provide a method for recovering wax in a steam dewaxing method of a casting method.
従つて本発明の目的は、ワツクスを高温に長時
間さらすことなく脱水することにより、回収する
ワツクスの品質を高品質に維持するとともに、回
収時のワツクスの状態に激しい変化を与えるのを
防止して熱損失を少なくし、且つワツクス回収・
再生の連続処理を実現することにより省力化、省
人化を企図し得るロスト・ワツクス鋳造法の蒸気
脱ろう法におけるワツクス回収方法を提供するこ
とにある。 Therefore, an object of the present invention is to maintain the quality of the collected wax at a high level by dehydrating the wax without exposing it to high temperatures for a long period of time, and to prevent drastic changes in the state of the wax at the time of collection. to reduce heat loss and to recover wax.
An object of the present invention is to provide a method for recovering wax in a steam dewaxing method of a lost wax casting method, which can save labor and manpower by realizing continuous regeneration processing.
以下に本発明の好適一実施例を添付図面に従つ
て詳述する。 A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.
図面は本発明に係る凍結乾燥方式のワツクス回
収装置の図を示す。オートクレーブ１内の一定残
圧（１Kg／cm2Ｇ）が確認されると電磁バルブが開
き、溶出したワツクスは蒸気圧の圧力でワツクス
貯槽２に送られる。貯槽２にはジヤケツトが付設
され、収容されたワツクスが凝固しない様にスチ
ームで加温している。次に沈静化したワツクスと
水の混合物はポンプ手段３の作動によつて濾過槽
４に送られる。濾過槽４もスチームで加温されて
いる。この濾過槽内の多段に設けられた分離装置
によりワツクス、、水以外の不純物が取り除かれ
る。 The drawing shows a diagram of a freeze-drying wax recovery apparatus according to the present invention. When a constant residual pressure (1 Kg/cm 2 G) in the autoclave 1 is confirmed, the electromagnetic valve opens and the eluted wax is sent to the wax storage tank 2 under steam pressure. A jacket is attached to the storage tank 2, and the stored wax is heated with steam to prevent it from solidifying. The settled wax and water mixture is then conveyed to a filter tank 4 by actuation of pump means 3. The filter tank 4 is also heated with steam. Impurities other than wax and water are removed by a multistage separation device within this filtration tank.
不純物が除去されたワツクス、水の混合物はワ
ツクストレイ５に搬送され、このワツクストレイ
５…はワツクス凍結装置６に収容され、ワツクス
は凍結用コンプレツサー７の作動で−50℃まで急
速に冷却され凍結される。この後、凍結したワツ
クス、水の混合物を真空装置８内に収容し、この
真空装置内を真空ポンプ９で高い真空状態にする
と昇華が促進され急速に脱水を行なうことができ
る。脱水された水は真空ポンプの前に付設された
凝結コンデンサー１０で急冷され、水として回収
される。 The mixture of wax and water from which impurities have been removed is conveyed to a wax tray 5, and this wax tray 5 is placed in a wax freezing device 6, where the wax is rapidly cooled to -50°C and frozen by the operation of a freezing compressor 7. . Thereafter, the mixture of frozen wax and water is placed in a vacuum device 8, and the inside of this vacuum device is brought to a high vacuum state with a vacuum pump 9, thereby promoting sublimation and allowing rapid dehydration. The dehydrated water is rapidly cooled in a condenser 10 installed in front of the vacuum pump and recovered as water.
本装置には、昇華する際にワツクスが潜熱を奪
われるため、熱補給用の加熱装置を付設してお
り、この装置によつて脱水されたワツクスは再加
熱され、溶融状態となり、溶解ワツクス送りポン
プ１１でワツクステンパリングタンク１２に搬送
される。ワツクステンパリングタンク１２には加
熱用ヒーター１２ａ…が付設され、ワツクスの温
度、質の調整等の精製を行なう。精製されたワツ
クスはデリバリータンク１３に搬送され、加熱ヒ
ーター１３ａ…によつて保温しつつ、ワツクスを
撹拌機１３ｂで撹拌し、更に模型材料として最良
の状態に保持される。一定の温度になつた精製ワ
ツクスは、精製ワツクス搬送ポンプ１４によつて
ワツクス模型射出成型装置１５に送られ、再度模
型成型に使用されることとなる。 This device is equipped with a heating device for heat replenishment, as latent heat is taken away from the wax during sublimation, and this device reheats the dehydrated wax to a molten state, and sends the molten wax. The wax is transported to a wax tempering tank 12 by a pump 11. The wax tempering tank 12 is provided with heating heaters 12a for purification such as adjusting the temperature and quality of the wax. The purified wax is transported to a delivery tank 13, kept warm by heaters 13a, stirred by a stirrer 13b, and further maintained in the best condition as a model material. The purified wax that has reached a certain temperature is sent to the wax model injection molding device 15 by the purified wax conveying pump 14, and is used again for model molding.
以上の説明で明らかなように本発明によれば、
最初に不純物を取り除いたワツクスと水の混合物
を冷却して凍結させ、その後昇華させることによ
りワツクスと水を分離するのでワツクスを長時間
高温にさらすことがなくワツクスの組成、品質を
一定に維持できるとともに、従来に比し熱損失を
極めて少なくすることができるという利点を有す
る。又ワツクス回収・再生工程を連続工程として
設けることができ、この連続処理によつて省力
化、省人化を達成することができる。更にワツク
スを凍結して脱水するため、ワツクスが多孔質と
なり、この結果ワツクスを固形状態で保存したと
しても、使用時に容易に溶解させることができ、
ワツクスの保存を容易化する等の諸効果を発揮す
る。 As is clear from the above description, according to the present invention,
First, a mixture of wax and water from which impurities have been removed is cooled and frozen, and then sublimated to separate the wax and water, so the composition and quality of the wax can be maintained constant without exposing the wax to high temperatures for long periods of time. At the same time, it has the advantage that heat loss can be extremely reduced compared to the conventional method. Further, the wax recovery/regeneration process can be provided as a continuous process, and this continuous process can save labor and manpower. Furthermore, since the wax is frozen and dehydrated, the wax becomes porous, and as a result, even if the wax is stored in a solid state, it can be easily dissolved when used.
It exhibits various effects such as facilitating the preservation of wax.
図面は本発明に係る方法を実施するための装置
構成図を示す。
尚図面中、１はオートクレーブ、４は濾過槽、
６はワツクス凍結装置、８は真空装置である。
The drawing shows a block diagram of an apparatus for carrying out the method according to the invention. In the drawing, 1 is an autoclave, 4 is a filter tank,
6 is a wax freezing device, and 8 is a vacuum device.
Claims (1)
不純物を除去した後、ワツクスを急速に冷却して
凍結し、凍結したワツクスを真空状態で昇華さ
せ、ワツクスから水分を除去するようにしたこと
を特徴とするロスト・ワツクス鋳造法の蒸気脱ろ
う法におけるワツクス回収方法。1 Lost wax characterized by removing impurities from wax taken out from an autoclave, rapidly cooling and freezing the wax, and sublimating the frozen wax in a vacuum to remove water from the wax. A wax recovery method in the steam dewaxing method of casting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4211880A JPS56139253A (en) | 1980-04-01 | 1980-04-01 | Wax recovering method in vapor dewaxing method of lost wax casting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4211880A JPS56139253A (en) | 1980-04-01 | 1980-04-01 | Wax recovering method in vapor dewaxing method of lost wax casting method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56139253A JPS56139253A (en) | 1981-10-30 |
| JPS6260182B2 true JPS6260182B2 (en) | 1987-12-15 |
Family
ID=12627028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4211880A Granted JPS56139253A (en) | 1980-04-01 | 1980-04-01 | Wax recovering method in vapor dewaxing method of lost wax casting method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56139253A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104588577A (en) * | 2014-12-25 | 2015-05-06 | 嘉兴市亚一达特种钢铸造有限公司 | Water removing equipment and process method of water-containing wax liquid |
| CN107790625A (en) * | 2017-11-24 | 2018-03-13 | 江苏华立控制阀有限公司 | A kind of manufacture craft applied to control valve wax-pattern |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE69800862T2 (en) * | 1997-11-07 | 2001-09-13 | Kawasaki Steel Techno Res Corp | Process for the recovery of investment casting wax compositions |
| KR100377314B1 (en) * | 2000-09-18 | 2003-03-26 | 주식회사 아이케이화성 | Regenerating method of wasted wax for lost wax casting process and apparatus thereof |
| KR100449166B1 (en) * | 2001-11-12 | 2004-09-16 | 조순희 | Wax manufacturing and regenerating apparatus for precision casting |
| CN102248121B (en) * | 2011-06-23 | 2013-03-20 | 安徽鑫宏机械有限公司 | Multifunctional processor for recovered wax |
| CN102814052A (en) * | 2012-07-30 | 2012-12-12 | 无锡鹰普精密铸造有限公司 | Fast dehydration device |
| CN104399890A (en) * | 2014-11-13 | 2015-03-11 | 柳州金特机械有限公司 | Manufacture method for sodium silicate shell of investment-precision-casting axle housing |
| CN104439073A (en) * | 2014-11-25 | 2015-03-25 | 柳州金特机械有限公司 | Hot water dewaxing method of fired mold precision casting axle housing |
| CN107096888B (en) * | 2017-07-07 | 2018-11-23 | 合肥工业大学 | Vertical steam dewaxing kettle |
-
1980
- 1980-04-01 JP JP4211880A patent/JPS56139253A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104588577A (en) * | 2014-12-25 | 2015-05-06 | 嘉兴市亚一达特种钢铸造有限公司 | Water removing equipment and process method of water-containing wax liquid |
| CN104588577B (en) * | 2014-12-25 | 2016-06-15 | 嘉兴市亚一达特种钢铸造有限公司 | The water removal device of a kind of moisture wax liquid and process thereof |
| CN107790625A (en) * | 2017-11-24 | 2018-03-13 | 江苏华立控制阀有限公司 | A kind of manufacture craft applied to control valve wax-pattern |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56139253A (en) | 1981-10-30 |
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