JPH04280988A - Method for washing metal materials and device therefor - Google Patents
Method for washing metal materials and device thereforInfo
- Publication number
- JPH04280988A JPH04280988A JP15962391A JP15962391A JPH04280988A JP H04280988 A JPH04280988 A JP H04280988A JP 15962391 A JP15962391 A JP 15962391A JP 15962391 A JP15962391 A JP 15962391A JP H04280988 A JPH04280988 A JP H04280988A
- Authority
- JP
- Japan
- Prior art keywords
- cleaning
- cleaned
- metal object
- tank
- steam
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 29
- 239000007769 metal material Substances 0.000 title abstract description 9
- 238000005406 washing Methods 0.000 title abstract 13
- 239000007788 liquid Substances 0.000 claims abstract description 76
- 238000007654 immersion Methods 0.000 claims abstract description 50
- 239000002480 mineral oil Substances 0.000 claims abstract description 25
- 235000010446 mineral oil Nutrition 0.000 claims abstract description 25
- 239000003921 oil Substances 0.000 claims abstract description 18
- 238000011282 treatment Methods 0.000 claims abstract description 17
- 238000004821 distillation Methods 0.000 claims abstract description 16
- 238000005496 tempering Methods 0.000 claims abstract description 15
- 238000001291 vacuum drying Methods 0.000 claims abstract description 3
- 238000004140 cleaning Methods 0.000 claims description 164
- 239000002184 metal Substances 0.000 claims description 61
- 229910052751 metal Inorganic materials 0.000 claims description 61
- 238000013020 steam cleaning Methods 0.000 claims description 51
- 238000009835 boiling Methods 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 8
- 230000008929 regeneration Effects 0.000 claims description 5
- 238000011069 regeneration method Methods 0.000 claims description 5
- 239000012459 cleaning agent Substances 0.000 claims 1
- 230000006837 decompression Effects 0.000 claims 1
- 238000001704 evaporation Methods 0.000 abstract description 4
- 230000008020 evaporation Effects 0.000 abstract description 4
- 238000005292 vacuum distillation Methods 0.000 description 9
- 239000003963 antioxidant agent Substances 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 230000003078 antioxidant effect Effects 0.000 description 5
- 230000009931 harmful effect Effects 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 150000008280 chlorinated hydrocarbons Chemical class 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- MDWVSAYEQPLWMX-UHFFFAOYSA-N 4,4'-Methylenebis(2,6-di-tert-butylphenol) Chemical compound CC(C)(C)C1=C(O)C(C(C)(C)C)=CC(CC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)=C1 MDWVSAYEQPLWMX-UHFFFAOYSA-N 0.000 description 2
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical group ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000001172 regenerating effect Effects 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 150000004996 alkyl benzenes Chemical class 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 238000005282 brightening Methods 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920013639 polyalphaolefin Polymers 0.000 description 1
- 229920001083 polybutene Polymers 0.000 description 1
- 235000013824 polyphenols Nutrition 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- WMYJOZQKDZZHAC-UHFFFAOYSA-H trizinc;dioxido-sulfanylidene-sulfido-$l^{5}-phosphane Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]P([O-])([S-])=S.[O-]P([O-])([S-])=S WMYJOZQKDZZHAC-UHFFFAOYSA-H 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、金属材料、金属製品等
を洗浄するための洗浄方法及び洗浄装置に関し、これら
の熱処理や加工において利用できる。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning method and a cleaning apparatus for cleaning metal materials, metal products, etc., and can be used in heat treatment and processing of these.
【０００２】0002
【背景技術】例えば、炭素鋼の製造において、鋼の機械
的、物理的又は化学的性質を改善するために、焼なまし
、焼ならし、焼入れ、焼戻し等の熱処理を施している。
このような熱処理の後、鋼の表面に付着した異物を除去
するため、鋼を洗浄している。BACKGROUND ART For example, in the production of carbon steel, heat treatments such as annealing, normalizing, quenching, and tempering are performed to improve the mechanical, physical, or chemical properties of the steel. After such heat treatment, the steel is washed to remove foreign matter adhering to the surface of the steel.
【０００３】図３に示すように、従来の洗浄方法では、
洗浄液１が容れられた浸漬洗浄槽２及び加熱装置３と凝
縮器４が備えられた蒸気洗浄槽５を用い、熱処理後の鋼
のような金属被洗浄物６を浸漬洗浄槽２に浸漬して洗浄
した後、引き続きこの金属被洗浄物６を蒸気洗浄槽５に
おいて洗浄液１の蒸気１Ａで洗浄している。このような
洗浄液１としては、通常、トリクロロエチレンのような
塩素化炭化水素系溶剤を使用している。As shown in FIG. 3, in the conventional cleaning method,
Using an immersion cleaning tank 2 containing a cleaning liquid 1 and a steam cleaning tank 5 equipped with a heating device 3 and a condenser 4, a heat-treated metal object 6 such as steel is immersed in the immersion cleaning tank 2. After cleaning, the metal object to be cleaned 6 is subsequently cleaned in a steam cleaning tank 5 with 1A of steam of the cleaning liquid 1. As such a cleaning liquid 1, a chlorinated hydrocarbon solvent such as trichlorethylene is usually used.
【０００４】0004
【発明が解決しようとする課題】上述したように、従来
の金属被洗浄物６の洗浄方法によれば、使用している洗
浄液１は、トリクロロエチレンのような有害な塩素化炭
化水素系溶剤であり、しかも蒸気洗浄槽５が開放系であ
るため、洗浄液１の蒸気１Ａが外部に漏出して、作業者
の健康に悪影響を与え、また大気中に拡散して環境破壊
の一因ともなっていた。そこで、本発明は、有害な洗浄
液を使用しないで、金属被洗浄物の効率的な洗浄を可能
とする洗浄方法及び洗浄装置を提供することを目的とす
る。[Problems to be Solved by the Invention] As mentioned above, according to the conventional method for cleaning metal objects 6, the cleaning liquid 1 used is a harmful chlorinated hydrocarbon solvent such as trichlorethylene. Moreover, since the steam cleaning tank 5 is an open system, the steam 1A of the cleaning liquid 1 leaks to the outside, adversely affecting the health of workers, and is also diffused into the atmosphere, contributing to environmental destruction. SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a cleaning method and a cleaning apparatus that enable efficient cleaning of metal objects to be cleaned without using harmful cleaning liquids.
【０００５】[0005]
【課題を解決するための手段及び作用】本発明に係る金
属被洗浄物の洗浄方法は、金属被洗浄物を鉱油系又は合
成油系洗浄液に浸漬して洗浄する工程と、初留温度が
１００℃（１ａｔｍ ）以上、かつ９０％留出温度が
２００℃（１ａｔｍ ）以上の鉱油系又は合成油系洗浄
液を用いて、前記金属被洗浄物に蒸気洗浄を施す工程と
を有することを特徴とする。また、この工程の後に、更
に前記金属被洗浄物に真空焼戻し処理を施す工程又は減
圧状態で洗浄液を除去する真空乾燥工程を付加してもよ
い。[Means and effects for solving the problems] The method for cleaning a metal object according to the present invention includes a step of immersing the metal object in a mineral oil-based or synthetic oil-based cleaning solution, and an initial boiling temperature.
100℃ (1atm) or higher and 90% distillation temperature
It is characterized by comprising a step of steam cleaning the metal object to be cleaned using a mineral oil-based or synthetic oil-based cleaning liquid at 200° C. (1 atm) or higher. Further, after this step, a step of subjecting the metal object to be cleaned to a vacuum tempering treatment or a vacuum drying step of removing the cleaning liquid under reduced pressure may be added.
【０００６】前記金属被洗浄物とは、熱処理後の金属材
料やこの金属材料を使用した加工後の金属製品であり、
後工程で洗浄処理されるものである。前記浸漬洗浄工程
で使用する鉱油系又は合成油系洗浄液としては、任意の
ものを使用することができるが、初留温度が １００〜
３００℃（１ａｔｍ ）程度のものが好ましい。また
、蒸気洗浄工程で使用する鉱油系又は合成油系洗浄液と
同じものを使用してもよい。この浸漬洗浄工程の洗浄液
は、５０℃以下で使用するのが好ましい。[0006] The metal object to be cleaned is a metal material after heat treatment or a metal product after processing using this metal material,
This will be cleaned in a post-process. Any mineral oil-based or synthetic oil-based cleaning liquid can be used in the immersion cleaning process, but the initial boiling temperature is 100 to
A temperature of about 300°C (1 atm) is preferable. Further, the same mineral oil-based or synthetic oil-based cleaning liquid used in the steam cleaning step may be used. The cleaning solution used in this immersion cleaning step is preferably used at a temperature of 50° C. or lower.
【０００７】前記蒸気洗浄工程で使用する鉱油系又は合
成油系洗浄液としては、好ましくは初留温度が １３０
〜 ４００℃（１ａｔｍ ）、かつ９０％留出温度が
１５０〜 ４５０℃（１ａｔｍ）のものがよい。また、
特に好ましくは、初留温度が １８０〜 ４００℃（１
ａｔｍ ）、かつ９０％留出温度が １８０〜 ４５０
℃（１ａｔｍ ）のものがよい。前記蒸留条件を満たせ
ば、任意のものを使用できるが、例えば鉱油では特にパ
ラフィン系鉱油が好ましい。また、合成油ではポリブテ
ン、ポリアルファオレフィン、アルキルベンゼン、アル
キルナフタレン等を使用できる。The mineral oil-based or synthetic oil-based cleaning liquid used in the steam cleaning step preferably has an initial boiling temperature of 130
~400℃(1atm) and 90% distillation temperature
A temperature of 150 to 450°C (1 atm) is preferable. Also,
Particularly preferably, the initial boiling temperature is 180 to 400°C (1
atm), and the 90% distillation temperature is 180-450
℃ (1 atm) is preferable. Any mineral oil can be used as long as it satisfies the above distillation conditions, but paraffinic mineral oil is particularly preferred, for example. Further, as synthetic oils, polybutene, polyalphaolefin, alkylbenzene, alkylnaphthalene, etc. can be used.
【０００８】鉱油系又は合成油系洗浄液の初留温度が
１００℃未満のもの、又は９０％留出温度が １５０℃
未満のものは、非常に軽質である。従って、この蒸気洗
浄工程においてこのような洗浄液を使用すると、ｉ．引
火性が強く、危険である、ｉｉ．コンデンサによる凝縮
が困難になる、ｉｉｉ．揮発性が高く、洗浄後の被洗浄
物の表面に油膜が形成されていないため、油膜による保
護効果が得られなくなる、という不都合が生じる。[0008] The initial boiling temperature of mineral oil-based or synthetic oil-based cleaning fluid is
Less than 100℃ or 90% distillation temperature is 150℃
Anything less than that is very light. Therefore, when using such a cleaning liquid in this steam cleaning process, i. Highly flammable and dangerous; ii. Condensation by the condenser becomes difficult; iii. Since it is highly volatile and no oil film is formed on the surface of the object to be cleaned after cleaning, there arises the disadvantage that the protective effect of the oil film cannot be obtained.
【０００９】なお、前記蒸気洗浄工程で使用する鉱油系
又は合成油系洗浄液は、前記初留温度及び９０％留出温
度の範囲を満たすものであれば問題はないが、この条件
に加えてこの初留温度と９０％留出温度との差が比較的
小さいものが良好な結果を示す場合がある。この温度差
は、 １５０℃以下、好ましくは １００℃以下、より
好ましくは５０℃以下がよい。Note that there is no problem with the mineral oil-based or synthetic oil-based cleaning liquid used in the steam cleaning step as long as it satisfies the above initial distillation temperature and 90% distillation temperature ranges, but in addition to this condition, A relatively small difference between the initial distillation temperature and the 90% distillation temperature may show good results. This temperature difference is preferably 150°C or less, preferably 100°C or less, more preferably 50°C or less.
【００１０】前記浸漬洗浄工程及び蒸気洗浄工程で使用
する鉱油系又は合成油系洗浄液には、酸化防止剤を添加
しておいてもよい。このために使用する酸化防止剤とし
ては、沸点の高い酸化防止剤、好ましくは沸点が １０
０℃以上、より好ましくは沸点が２００℃以上のものを
使用する。具体的には、フェノール系〔例えば、４，４
′−メチレンビス（２，６−ジ−ｔ−ブチルフェノール
）〕、金属系〔例えば、ＺｎＤＴＰ（ジチオリン酸亜鉛
）〕、アミン系等の酸化防止剤を使用することができる
。前記真空焼戻し処理は、通常処理温度 １５０〜 ３
００℃で行うが、特に １５０〜２００℃が好ましい。
この処理により、金属被洗浄物に付着した洗浄液が蒸発
揮散し、洗浄液の焼付けによる汚染等の悪影響を受けず
に、後の光揮処理等が可能になる。[0010] An antioxidant may be added to the mineral oil-based or synthetic oil-based cleaning liquid used in the immersion cleaning step and the steam cleaning step. The antioxidant used for this purpose is an antioxidant with a high boiling point, preferably with a boiling point of 10
One having a boiling point of 0°C or higher, more preferably 200°C or higher is used. Specifically, phenolics [e.g. 4,4
'-methylenebis(2,6-di-t-butylphenol)], metal-based antioxidants [for example, ZnDTP (zinc dithiophosphate)], amine-based antioxidants, and the like can be used. The vacuum tempering treatment is usually performed at a treatment temperature of 150 to 3
The temperature is preferably 150 to 200°C. Through this treatment, the cleaning liquid adhering to the metal object to be cleaned is evaporated and diffused, making it possible to carry out subsequent photovolatile treatment without being adversely affected by contamination or the like due to baking of the cleaning liquid.
【００１１】この洗浄方法で使用する金属被洗浄物の洗
浄装置は、鉱油系洗浄液が容れられ、金属被洗浄物が浸
漬洗浄される浸漬洗浄槽と、鉱油系洗浄液の加熱手段を
備え、前記金属被洗浄物が蒸気洗浄される蒸気洗浄槽と
を有し、前記浸漬洗浄槽と前記蒸気洗浄槽とを連結して
設けたことを特徴とする。浸漬洗浄槽と蒸気洗浄槽との
連結構造は、金属被洗浄物を槽外に露出させないで浸漬
洗浄槽から蒸気洗浄槽に移動させることができる構造で
あれば任意である。例えば、槽の側面部を一部共通にし
て両槽を連結してもよく、又は筒状の連結部分を介して
両槽を連結するようにしてもよい。The apparatus for cleaning metal objects used in this cleaning method is equipped with an immersion cleaning tank containing a mineral oil-based cleaning liquid and in which the metal objects are immersed and cleaned, and means for heating the mineral oil-based cleaning liquid. The present invention is characterized in that it has a steam cleaning tank in which an object to be cleaned is steam-cleaned, and the immersion cleaning tank and the steam cleaning tank are connected to each other. The connection structure between the immersion cleaning tank and the steam cleaning tank is arbitrary as long as it can move the metal object to be cleaned from the immersion cleaning tank to the steam cleaning tank without exposing the metal object to the outside of the tank. For example, the two tanks may be connected by having a part of the side surface part common to the two tanks, or the two tanks may be connected via a cylindrical connecting portion.
【００１２】また、本発明に係る洗浄装置の浸漬洗浄槽
と蒸気洗浄槽には、開閉弁等の切り換え手段を介して共
通の減圧手段を接続し、この切り換え手段の切り換えに
よってこれらの槽のいずれか一方を選択的に減圧できる
ようにしてもよい。更に、本発明に係る洗浄装置には、
浸漬洗浄槽から蒸気洗浄槽に循環管路を設け、この循環
管路の途中に洗浄液再生手段を設けて、使用により汚れ
た洗浄液中の汚れや異物を分離除去し、清浄な洗浄液を
繰り返し使用できるようにしておいてもよい。具体的に
は、洗浄液再生手段は、濾過装置、遠心分離装置、真空
蒸留装置等により構成することができる。[0012] Further, a common pressure reducing means is connected to the immersion cleaning tank and the steam cleaning tank of the cleaning apparatus according to the present invention through a switching means such as an on-off valve, and by switching the switching means, either of these tanks can be operated. It may also be possible to selectively reduce the pressure in one of them. Furthermore, the cleaning device according to the present invention includes:
A circulation pipe is provided from the immersion cleaning tank to the steam cleaning tank, and a cleaning liquid regeneration means is installed in the middle of this circulation pipe to separate and remove dirt and foreign matter from the cleaning liquid that has become dirty due to use, allowing the clean cleaning liquid to be used repeatedly. You can leave it as is. Specifically, the cleaning liquid regeneration means can be configured by a filtration device, a centrifugal separator, a vacuum distillation device, etc.
【００１３】[0013]
【実施例】図１を参照して本発明の一実施例を説明する
。先ず、本実施例で使用する金属被洗浄物の洗浄装置の
構成を説明する。図１に示すように、この洗浄装置は、
金属被洗浄物１１が浸漬洗浄される浸漬洗浄槽１２と金
属被洗浄物１１が蒸気洗浄される蒸気洗浄槽１３とが連
結されたもの及び真空焼戻し処理槽１４を備えて構成さ
れる。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIG. First, the configuration of the cleaning apparatus for metal objects to be cleaned used in this embodiment will be explained. As shown in Figure 1, this cleaning device
It is constituted by an immersion cleaning tank 12 in which the metal object 11 to be cleaned is immersed and cleaned, a steam cleaning tank 13 in which the metal object 11 is steam cleaned, and a vacuum tempering treatment tank 14.
【００１４】前記浸漬洗浄槽１２は、側面部１５、上面
部１６及び底面部１７を有し、これらが一体として密閉
状態で構成され、この側面部１５の上方には開閉自在の
第１の蓋１８が設けられている。この浸漬洗浄槽１２内
には、洗浄液１９として初留温度が ２００℃（１ａｔ
ｍ ）程度の鉱油が容れられている。この洗浄液１９に
は、酸化防止剤として４，４′−メチレンビス（２，６
−ジ−ｔ−ブチルフェノール）が ０．２ ｗｔ ％添
加されている。The immersion cleaning tank 12 has a side surface 15, a top surface 16, and a bottom surface 17, which are integrally constructed in a sealed state, and above the side surface 15 is a first lid that can be opened and closed. 18 are provided. In this immersion cleaning tank 12, the cleaning liquid 19 has an initial distillation temperature of 200°C (1at
It contains about 100 m) of mineral oil. This cleaning liquid 19 contains 4,4'-methylenebis(2,6
-di-t-butylphenol) was added at 0.2 wt%.
【００１５】前記蒸気洗浄槽１３は、この浸漬洗浄槽１
２の側面部１５を一部共通とした側面部２０、上面部２
１及び底面部２２有し、これらが一体として密閉状態で
構成され、この共通の側面部分１５Ａ を介して両槽１
２，１３ が連結されている。この共通の側面部分１５
Ａ の上方には、開閉自在の第２の蓋２３が設けられ、
この蓋２３の開閉により両槽１２，１３ 間の金属被洗
浄物１１の移動が行われる。The steam cleaning tank 13 is similar to this immersion cleaning tank 1.
A side surface portion 20 and a top surface portion 2 that share a part of the side surface portion 15 of 2.
1 and a bottom part 22, which are integrally constructed in a sealed state, and both tanks 1 and 1 are connected through this common side part 15A.
2,13 are connected. This common side part 15
A second lid 23 that can be opened and closed is provided above A.
By opening and closing the lid 23, the metal object 11 to be cleaned is moved between the two tanks 12, 13.
【００１６】また、この槽１３の下部には洗浄液２４を
加熱して蒸気２４Ａ を発生させるためのヒータ２５が
設けられ、上部には蒸気２４Ａ を凝縮するためのコン
デンサ２６及び槽１３内を減圧するための真空ポンプ２
７が設けられている。
この真空ポンプ２７は、１Ｔｏｒｒ以下までの減圧制御
が可能となっているものである。更に、この槽１３には
、金属被洗浄物１１を槽１３内の略中央に保持するため
の図示しない保持手段が設けられている。この槽１３内
には、洗浄液２４として初留温度が ２６０℃（１ａｔ
ｍ ）程度、かつ９０％留出温度が ３５０℃（１ａｔ
ｍ ）程度の鉱油が容れられている。
この洗浄液２４にも、前記酸化防止剤と同じものが ０
．２ ｗｔ ％添加されている。前記真空焼戻し処理槽
１４には、金属被洗浄物１１を焼戻すためのヒータ２９
及び槽２８内を減圧するための真空ポンプ３０が設けら
れている。Further, a heater 25 is provided at the bottom of this tank 13 to heat the cleaning liquid 24 to generate steam 24A, and a condenser 26 to condense the steam 24A and a condenser 26 to reduce the pressure inside the tank 13 are installed at the top. vacuum pump 2
7 is provided. This vacuum pump 27 is capable of reducing pressure to 1 Torr or less. Furthermore, this tank 13 is provided with a holding means (not shown) for holding the metal object to be cleaned 11 approximately at the center of the tank 13 . In this tank 13, the cleaning liquid 24 has an initial distillation temperature of 260°C (1at
m), and the 90% distillation temperature is 350℃ (1at
It contains about 100 m) of mineral oil. This cleaning liquid 24 also contains the same antioxidant as the antioxidant.
．． 2 wt% was added. The vacuum tempering treatment tank 14 includes a heater 29 for tempering the metal object 11 to be cleaned.
A vacuum pump 30 for reducing the pressure inside the tank 28 is also provided.
【００１７】次に、図１を参照して、上記洗浄装置を使
用した本実施例に係る金属被洗浄物１１の洗浄方法を説
明する。先ず、熱処理後の鋼のような金属被洗浄物１１
を浸漬洗浄槽１２に入れて、第１の蓋１８を閉じる。そ
して、密閉状態の槽１２内で、この金属被洗浄物１１を
洗浄液１９中に浸漬して充分洗浄すると同時に冷却する
。Next, with reference to FIG. 1, a method of cleaning a metal object 11 according to this embodiment using the above-mentioned cleaning apparatus will be described. First, a metal object 11 such as steel after heat treatment is cleaned.
into the immersion cleaning tank 12 and close the first lid 18. The metal object 11 to be cleaned is then immersed in a cleaning liquid 19 in a sealed tank 12 to be thoroughly cleaned and cooled at the same time.
【００１８】次に、金属被洗浄物１１を洗浄液１９から
引き上げて、隣の蒸気洗浄槽１３に移し、金属被洗浄物
１１を槽１３内に保持して第２の蓋２３を閉じる。そし
て、密閉状態の槽１３内で、槽１３内を減圧しながら、
２００℃前後に加熱された洗浄液２４から蒸気２４Ａ
を発生させ、金属被洗浄物１１を洗浄液蒸気２４Ａ 及
び洗浄物１１の表面で凝縮した洗浄液２４で充分洗浄す
る。この蒸気洗浄の際、槽１３内では洗浄液蒸気２４Ａ
がコンデンサ２６や洗浄物１１の表面等によって凝縮
されて洗浄液２４に戻され、洗浄液２４と洗浄液蒸気２
４Ａ の循環が連続的に行われる。この蒸気洗浄で、凝
縮して金属被洗浄物１１を被覆した清浄な洗浄液２４は
、次の真空焼戻し処理までの間の防錆作用を果たす。Next, the metal object 11 to be cleaned is pulled up from the cleaning liquid 19 and transferred to the adjacent steam cleaning tank 13, and the second lid 23 is closed while holding the metal object 11 in the tank 13. Then, while reducing the pressure inside the tank 13 in the sealed tank 13,
Steam 24A from the cleaning liquid 24 heated to around 200°C
is generated, and the metal object 11 to be cleaned is thoroughly cleaned with the cleaning liquid vapor 24A and the cleaning liquid 24 condensed on the surface of the object 11 to be cleaned. During this steam cleaning, in the tank 13, the cleaning liquid vapor 24A
is condensed by the condenser 26, the surface of the cleaning object 11, etc. and returned to the cleaning liquid 24, and the cleaning liquid 24 and cleaning liquid vapor 2 are
A cycle of 4 A is carried out continuously. The clean cleaning liquid 24 that condenses and coats the metal object 11 during this steam cleaning serves as a rust preventive agent until the next vacuum tempering process.
【００１９】次に、蒸気洗浄槽１３を復圧し、洗浄液蒸
気２４Ａ を凝縮させた後、第２の蓋２３を開けて、金
属被洗浄物１１を蒸気洗浄槽１３から浸漬洗浄槽１２に
移す。この後、更に第１の蓋１８を開けて、金属被洗浄
物１１を浸漬洗浄槽１２外に取り出す。これにより、洗
浄液蒸気２４Ａ の槽１２，１３ 外への漏出が防止さ
れる。引き続きこの金属被洗浄物１１を真空焼戻し処理
槽１４に移し、 １５０〜２００℃での真空焼戻し処理
を施す。この処理で、金属被洗浄物１１に付着した洗浄
液２４が除去される。Next, after the pressure in the steam cleaning tank 13 is restored and the cleaning liquid vapor 24A is condensed, the second lid 23 is opened and the metal object 11 to be cleaned is transferred from the steam cleaning tank 13 to the immersion cleaning tank 12. Thereafter, the first lid 18 is further opened and the metal object to be cleaned 11 is taken out of the immersion cleaning tank 12. This prevents the cleaning liquid vapor 24A from leaking out of the tanks 12, 13. Subsequently, this metal object to be cleaned 11 is transferred to a vacuum tempering treatment tank 14 and subjected to a vacuum tempering treatment at 150 to 200°C. Through this process, the cleaning liquid 24 adhering to the metal object to be cleaned 11 is removed.
【００２０】上記実施例によれば、金属被洗浄物１１の
洗浄液１９，２４として、鉱油を用いているため、従来
の有害な塩素化炭化水素系溶剤を用いた場合の作業者や
自然環境への悪影響を回避することができ、安全な洗浄
作業が可能になる。また、浸漬洗浄槽１２と蒸気洗浄槽
１３は、いずれも密閉可能に構成されているため、洗浄
液蒸気２４Ａ の槽１２，１３ 外への漏出が阻止され
、鉱油を用いた蒸気洗浄処理により作業環境や自然環境
が汚染される虞れはなくなる。According to the above embodiment, since mineral oil is used as the cleaning liquid 19, 24 for the metal object 11 to be cleaned, it is less harmful to workers and the natural environment than when conventional harmful chlorinated hydrocarbon solvents are used. The negative effects of this can be avoided, making safe cleaning work possible. In addition, since both the immersion cleaning tank 12 and the steam cleaning tank 13 are configured to be airtight, leakage of the cleaning liquid vapor 24A to the outside of the tanks 12, 13 is prevented, and the steam cleaning process using mineral oil creates a working environment. There is no risk of contaminating the environment or the natural environment.
【００２１】浸漬洗浄槽１２と蒸気洗浄槽１３が連結し
て設けられているため、浸漬洗浄工程の後、蒸気洗浄工
程を連続して行うことができ、作業効率が向上する。更
に、蒸気洗浄工程の後に真空焼戻し工程を設けているた
め、洗浄液の焼付けによる金属被洗浄物１１の汚染等も
なくなって、支障なく光輝処理等を施すことができ、こ
れにより品質のよい金属材料又は金属製品が得られる。Since the immersion cleaning tank 12 and the steam cleaning tank 13 are connected, the steam cleaning process can be performed continuously after the immersion cleaning process, improving work efficiency. Furthermore, since a vacuum tempering process is provided after the steam cleaning process, there is no contamination of the metal object 11 to be cleaned due to baking of the cleaning liquid, and brightening treatment etc. can be performed without any trouble, thereby producing high-quality metal materials. Or metal products can be obtained.
【００２２】次に、図２を参照して本発明の他の実施例
を説明する。先ず、この実施例で使用する金属被洗浄物
の洗浄装置の構成を説明する。図２に示すように、この
洗浄装置は、浸漬洗浄槽１２と蒸気洗浄槽１３とが連結
されたもの及び減圧手段としての共通の真空ポンプ３２
と洗浄液再生手段としての真空蒸留装置３３を備えて構
成される。Next, another embodiment of the present invention will be described with reference to FIG. First, the configuration of a cleaning apparatus for metal objects to be cleaned used in this embodiment will be explained. As shown in FIG. 2, this cleaning device includes an immersion cleaning tank 12 and a steam cleaning tank 13 connected together, and a common vacuum pump 32 as pressure reducing means.
and a vacuum distillation device 33 as cleaning liquid regeneration means.
【００２３】前記浸漬洗浄槽１２は、上記実施例と同様
の構成を有するが、前記真空ポンプ３２が接続されてい
る。
この洗浄槽１２内には、初留温度が ２５０℃（１ａｔ
ｍ ）程度、かつ９０％留出温度が ２９０℃（１ａｔ
ｍ ）程度の鉱油より成る洗浄液１９が容れられている
。前記蒸気洗浄槽１３は、上記実施例と同様の構成を有
するが、独立の真空ポンプ２７は設けられておらず、前
記真空ポンプ３２が接続されている。この蒸気洗浄槽１
３には、上記浸漬洗浄槽１２に容れられているものと同
じ洗浄液２４が容れられている。
この蒸気洗浄槽１３は、ポンプ３５を介して隣の浸漬洗
浄槽１２と連通され、蒸気洗浄槽１３の洗浄液２４が浸
漬洗浄槽１２に適宜送られるようになっている。The immersion cleaning tank 12 has the same structure as in the above embodiment, but the vacuum pump 32 is connected thereto. In this cleaning tank 12, the initial distillation temperature is 250°C (1at
m), and the 90% distillation temperature is 290℃ (1at
A cleaning liquid 19 made of mineral oil of the order of m) is contained. The steam cleaning tank 13 has a configuration similar to that of the above embodiment, but an independent vacuum pump 27 is not provided, and the vacuum pump 32 is connected. This steam cleaning tank 1
3 contains the same cleaning liquid 24 as that contained in the immersion cleaning tank 12. This steam cleaning tank 13 is communicated with the adjacent immersion cleaning tank 12 via a pump 35, so that the cleaning liquid 24 of the steam cleaning tank 13 is sent to the immersion cleaning tank 12 as appropriate.
【００２４】前記真空ポンプ３２は、浸漬洗浄槽１２と
蒸気洗浄槽１３にそれぞれ並列に設けられた開閉弁３４
を介して接続され、これらの開閉弁３４の切り換えによ
って浸漬洗浄槽１２と蒸気洗浄槽１３のいずれか一方の
減圧を選択的に行えるようになっている。また、途中の
管路には、窒素（又は空気）３６の供給用管路が接続さ
れている。前記真空蒸留装置３３は、真空ポンプ３２を
備え、ポンプ３５を介して浸漬洗浄槽１２と接続され、
またこの真空蒸留装置３３は、蒸気洗浄槽１３とも接続
されて、洗浄液の循環管路を構成している。The vacuum pump 32 has on-off valves 34 provided in parallel to the immersion cleaning tank 12 and the steam cleaning tank 13, respectively.
By switching these on-off valves 34, either the immersion cleaning tank 12 or the steam cleaning tank 13 can be selectively depressurized. Further, a pipe line for supplying nitrogen (or air) 36 is connected to the pipe line in the middle. The vacuum distillation device 33 includes a vacuum pump 32 and is connected to the immersion cleaning tank 12 via a pump 35,
The vacuum distillation device 33 is also connected to the steam cleaning tank 13 to form a cleaning liquid circulation pipe.
【００２５】次に、図２を参照して、上記洗浄装置を使
用した本実施例に係る金属被洗浄物１１の洗浄方法を説
明する。浸漬洗浄槽１２における金属被洗浄物１１の浸
漬洗浄工程及び蒸気洗浄槽１３における金属被洗浄物１
１の蒸気洗浄工程は、上記実施例と同様である。但し、
この洗浄装置においては、浸漬洗浄槽１２で使用により
汚れた洗浄液１９は、順次ポンプ３５により真空蒸留装
置３３に送られる。
ここで、真空蒸留によって洗浄液１９中の汚れや異物が
分離除去され、清浄な洗浄液は蒸気洗浄槽１３に戻され
、一方廃液が排出される。また、この蒸気洗浄槽１３内
の洗浄液２４は、適宜ポンプ３５により浸漬洗浄槽１２
に供給されて、所定の液面レベルが保たれる。Next, with reference to FIG. 2, a method of cleaning a metal object 11 according to this embodiment using the above-mentioned cleaning apparatus will be described. Immersion cleaning process of the metal object 11 to be cleaned in the immersion cleaning tank 12 and metal object 1 to be cleaned in the steam cleaning tank 13
The steam cleaning step 1 is the same as in the above embodiment. however,
In this cleaning device, the cleaning liquid 19 contaminated by use in the immersion cleaning tank 12 is sequentially sent to a vacuum distillation device 33 by a pump 35. Here, dirt and foreign matter in the cleaning liquid 19 are separated and removed by vacuum distillation, and the clean cleaning liquid is returned to the steam cleaning tank 13, while the waste liquid is discharged. Further, the cleaning liquid 24 in this steam cleaning tank 13 is transferred to the immersion cleaning tank 12 by a pump 35 as appropriate.
is supplied to maintain a predetermined liquid level.
【００２６】次に、蒸気洗浄が終了した後、蒸気洗浄槽
１３を窒素（又は空気）３６により復圧し、第２の蓋２
３を開けて、金属被洗浄物１１を蒸気洗浄槽１３から浸
漬洗浄槽１２に移す。この浸漬洗浄槽１２において、開
閉弁３４の切り換えによって真空ポンプ３２により槽１
２内を減圧して金属被洗浄物１１に付着している洗浄液
を蒸発揮散させる。この処理の後、浸漬洗浄槽１２内に
窒素（又は空気）３６を導入して浸漬洗浄槽１２内を復
圧する。次に、第１の蓋１８を開けて、金属被洗浄物１
１を浸漬洗浄槽１２外に取り出す。Next, after the steam cleaning is completed, the pressure in the steam cleaning tank 13 is restored with nitrogen (or air) 36, and the second lid 2 is closed.
3 is opened and the metal object to be cleaned 11 is transferred from the steam cleaning tank 13 to the immersion cleaning tank 12. In this immersion cleaning tank 12, by switching the on-off valve 34, the vacuum pump 32
The pressure inside 2 is reduced to evaporate and diffuse the cleaning liquid adhering to the metal object 11 to be cleaned. After this treatment, nitrogen (or air) 36 is introduced into the immersion cleaning tank 12 to restore the pressure inside the immersion cleaning tank 12. Next, open the first lid 18 and remove the metal object 1 to be cleaned.
1 to the outside of the immersion cleaning tank 12.
【００２７】この実施例によれば、上記実施例で記載し
た安全な洗浄作業が可能になる、等の効果に加えて、浸
漬洗浄槽１２において、金属被洗浄物１１に付着してい
る洗浄液を蒸発揮散させるようにしたため、上記実施例
に係る真空焼戻し処理槽１４が不要となって、洗浄装置
全体をコンパクトなものとすることができる。また、こ
の洗浄装置では、浸漬洗浄槽１２での洗浄液の蒸発揮散
処理の際及び蒸気洗浄槽１３での金属被洗浄物１１の蒸
気洗浄処理の際、いずれも共通の真空ポンプ３２を使用
し、開閉弁３４の切り換えによっていずれの槽の減圧も
行えるようになっているため、合理的な装置となってい
る。According to this embodiment, in addition to the effect that the safe cleaning work described in the above embodiment is possible, the cleaning liquid adhering to the metal object 11 to be cleaned can be removed in the immersion cleaning tank 12. Since evaporation and evaporation are carried out, the vacuum tempering treatment tank 14 according to the above embodiment becomes unnecessary, and the entire cleaning apparatus can be made compact. In addition, in this cleaning device, a common vacuum pump 32 is used for both the evaporation and desorption treatment of the cleaning liquid in the immersion cleaning tank 12 and the steam cleaning treatment of the metal object to be cleaned 11 in the steam cleaning tank 13. Since the pressure in either tank can be reduced by switching the on-off valve 34, it is a rational device.
【００２８】更に、この洗浄装置では、洗浄液再生手段
としての真空蒸留装置３３を設けたため、浸漬洗浄槽１
２の汚れた洗浄液１９を再生して清浄な洗浄液を蒸気洗
浄槽１３と浸漬洗浄槽１２に供給することができる。こ
れにより、浸漬洗浄槽１２中の洗浄液１９を常に清浄に
保つこが可能になる。なお、上記実施例では、洗浄液１
９，２４ として、鉱油を用いたが、鉱油の代わりに合
成油を用いても同様の効果が得られる。また、上記実施
例では、洗浄液再生手段としての真空蒸留装置３３を設
けたが、濾過装置、遠心分離装置等を設けてもよい。Furthermore, in this cleaning device, since a vacuum distillation device 33 is provided as a cleaning liquid regenerating means, the immersion cleaning tank 1
The dirty cleaning liquid 19 of No. 2 can be regenerated and clean cleaning liquid can be supplied to the steam cleaning tank 13 and the immersion cleaning tank 12. This makes it possible to keep the cleaning liquid 19 in the immersion cleaning tank 12 clean at all times. In addition, in the above embodiment, cleaning liquid 1
9,24, mineral oil was used, but the same effect can be obtained by using synthetic oil instead of mineral oil. Further, in the above embodiment, the vacuum distillation device 33 is provided as a cleaning liquid regenerating means, but a filtration device, a centrifugal separator, etc. may also be provided.
【００２９】[0029]
【発明の効果】本発明に係る金属被洗浄物の洗浄方法及
び洗浄装置によれば、洗浄液による作業者や自然環境へ
の悪影響を回避することができ、しかも効率的な洗浄が
可能となる。According to the method and apparatus for cleaning metal objects to be cleaned according to the present invention, it is possible to avoid harmful effects of the cleaning liquid on workers and the natural environment, and moreover, it is possible to perform efficient cleaning.
【図１】本発明の一実施例において使用する金属被洗浄
物の洗浄装置の概略図である。FIG. 1 is a schematic diagram of a cleaning apparatus for a metal object to be cleaned used in an embodiment of the present invention.
【図２】本発明の他の実施例において使用する洗浄装置
の概略図である。FIG. 2 is a schematic diagram of a cleaning device used in another embodiment of the invention.
【図３】従来例に係る洗浄装置の概略図である。FIG. 3 is a schematic diagram of a conventional cleaning device.
１１ 金属被洗浄物
１２ 浸漬洗浄槽
１３ 蒸気洗浄槽
１４ 真空焼戻し処理槽
１９ 洗浄液
２４ 洗浄液
２４Ａ 洗浄液蒸気
２５ ヒータ
３２ 減圧手段としての真空ポンプ
３３ 洗浄液再生手段としての真空蒸留装置３４
切り換え手段としての開閉弁11 Metal object to be cleaned 12 Immersion cleaning tank 13 Steam cleaning tank 14 Vacuum tempering tank 19 Cleaning liquid 24 Cleaning liquid 24A Cleaning liquid vapor 25 Heater 32 Vacuum pump 33 as pressure reducing means Vacuum distillation device 34 as cleaning liquid regeneration means
On-off valve as a switching means
Claims (6)
浄液に浸漬して洗浄する工程と、初留温度が １００℃
（１ａｔｍ ）以上、かつ９０％留出温度が ２００℃
（１ａｔｍ ）以上の鉱油系又は合成油系洗浄液を用い
て、前記金属被洗浄物に蒸気洗浄を施す工程とを有する
ことを特徴とする金属被洗浄物の洗浄方法。Claim 1: A step of cleaning a metal object by immersing it in a mineral oil-based or synthetic oil-based cleaning solution, and an initial boiling temperature of 100°C.
(1 atm) or more and 90% distillation temperature is 200℃
A method for cleaning a metal object to be cleaned, comprising the step of subjecting the metal object to steam cleaning using a mineral oil-based or synthetic oil-based cleaning liquid of (1 atm) or more.
洗浄物に真空焼戻し処理を施すことを特徴とする金属被
洗浄物の洗浄方法。2. A method for cleaning a metal object, characterized in that, after the step according to claim 1, the metal object to be cleaned is subjected to a vacuum tempering treatment.
洗浄物に真空乾燥処理を施すことを特徴とする金属被洗
浄物の洗浄方法。3. A method for cleaning a metal object, characterized in that after the step according to claim 1, the metal object to be cleaned is subjected to a vacuum drying process.
、金属被洗浄物が浸漬洗浄される浸漬洗浄槽と、鉱油系
又は合成油系洗浄液の加熱手段を備え、前記金属被洗浄
物が蒸気洗浄される蒸気洗浄槽とを有し、前記浸漬洗浄
槽と前記蒸気洗浄槽とを連結して設けたことを特徴とす
る金属被洗浄物の洗浄装置。4. An immersion cleaning tank containing a mineral oil-based or synthetic oil-based cleaning liquid and in which the metal object to be cleaned is immersed and cleaned, and a means for heating the mineral oil-based or synthetic oil-based cleaning agent, wherein the metal object to be cleaned is heated by steam. 1. A cleaning apparatus for a metal object to be cleaned, comprising a steam cleaning tank to be cleaned, and the immersion cleaning tank and the steam cleaning tank are connected to each other.
り換え手段を介して共通の減圧手段を接続し、この切り
換え手段の切り換えによってこれらの槽のいずれか一方
を選択的に減圧できるようにしたことを特徴とする請求
項４記載の金属被洗浄物の洗浄装置。5. A common decompression means is connected to the immersion cleaning tank and the steam cleaning tank via a switching means, and by switching the switching means, either one of these tanks can be selectively depressurized. 5. The apparatus for cleaning metal objects to be cleaned according to claim 4.
循環管路を設け、この循環管路の途中に洗浄液再生手段
を設けたことを特徴とする請求項４又は５記載の金属被
洗浄物の洗浄装置。6. The metal object to be cleaned according to claim 4 or 5, characterized in that a circulation pipe is provided from the immersion cleaning tank to the steam cleaning tank, and a cleaning liquid regeneration means is provided in the middle of the circulation pipe. cleaning equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15962391A JP2965386B2 (en) | 1991-01-17 | 1991-06-03 | Method and apparatus for cleaning metal objects |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1845891 | 1991-01-17 | ||
| JP3-18458 | 1991-01-17 | ||
| JP15962391A JP2965386B2 (en) | 1991-01-17 | 1991-06-03 | Method and apparatus for cleaning metal objects |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04280988A true JPH04280988A (en) | 1992-10-06 |
| JP2965386B2 JP2965386B2 (en) | 1999-10-18 |
Family
ID=26355137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15962391A Expired - Fee Related JP2965386B2 (en) | 1991-01-17 | 1991-06-03 | Method and apparatus for cleaning metal objects |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2965386B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102505133A (en) * | 2011-09-29 | 2012-06-20 | 东莞市新球清洗科技有限公司 | Process for carrying out vacuum cleaning, oil removal and wax removal by modified hydrocarbon cleaner |
-
1991
- 1991-06-03 JP JP15962391A patent/JP2965386B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2965386B2 (en) | 1999-10-18 |
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