JPS5953688A - Method for removing oxide scale from metallic surface - Google Patents
Method for removing oxide scale from metallic surfaceInfo
- Publication number
- JPS5953688A JPS5953688A JP16547482A JP16547482A JPS5953688A JP S5953688 A JPS5953688 A JP S5953688A JP 16547482 A JP16547482 A JP 16547482A JP 16547482 A JP16547482 A JP 16547482A JP S5953688 A JPS5953688 A JP S5953688A
- Authority
- JP
- Japan
- Prior art keywords
- oxide scale
- scale
- laser light
- gaseous mixture
- plate
- 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.)
- Pending
Links
Landscapes
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は金属の表面に(=J盾冒)ている酸Itsベノ
1゛−ルを除去する方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for removing acid benol present on the surface of metal.
tlr来、金属の表面に付着した酸化スケールを除去す
るには、ショツトブラスト
いるが、このシぢソトプラスト方法はショットまたはグ
リッドを金属表面にだたきつζ1てスケールを除去する
ものであるため、必要脱スゲールイ(および金属の必要
面用度を保持するために64、投射材の挿γI゛1、投
射速度、投射距1η11、投’J.I密度等y ’tt
r:なブラスト条件をIjえなければならなかった。し
かしこれらの条件を保持してショッ1、プラス1、をす
ることは国分IFであり、相当のばらつきが出てこのば
らつきがそのまま脱スケール率むまひ金属表向の相反の
ばらつきにつながり11標に対しかなりのばらつきが出
るのが91(、通である。−・力製品の高品位化が叫ば
れるようになり後1.稈での製品前゛e(の安定のため
面粗度のばらつきが少ないスケールの除去が要求される
ようになりシヨ、、ドブラス1、法では限界に近いとこ
ろまできでいる。Since TLR, shot blasting has been used to remove oxide scale attached to the metal surface, but this method requires shot or grid blasting on the metal surface to remove scale. In order to remove the scale (and maintain the necessary surface use of the metal), the injection of the projectile material γI゛1, the projection speed, the projection distance 1η11, the projection 'J.I density, etc.
r: I had to adjust the blasting conditions. However, holding these conditions and doing a shot 1, plus 1, is a Kokubu IF, and a considerable amount of variation occurs, and this variation directly leads to contradictory variations in the descaling rate and metal surface, resulting in 11 marks. On the other hand, it is common knowledge that considerable variation occurs in the surface roughness of 91(, 1.). As the removal of a small amount of scale is required, the Dobras 1 method has reached its limit.
本発明はこれらの問題を)リゲ決する目的のへとになさ
れたもので、金属表面に(・t 、i′’; L/でい
る酸化スケールに対し還元雰囲気あるいはイ・活171
′イフ゛凹気にてレーザ光を照射して金属表面より酸化
スケールを1余人するものである。The present invention was made with the purpose of resolving these problems.
``This method removes more than one oxide scale from the metal surface by irradiating laser light in a concave atmosphere.
以下本発明を実施例に基づいて説明ずろ。The present invention will be explained below based on examples.
図示されない搬送装fFtを介して矢印方向に移動され
る酸化スケール(1)を4.1着さ1また全・属()i
(′/是)の−Jl方には、図示されないレーリ゛発振
藷により発生され各種調整装置により、調lidされた
レーザ光(C)を案内するビームダクト(3)が配置1
′lされていて、該ビームダクI−(3)は金属板(2
)の移動Ji向とは逆向きになる方向に向けて傾斜して
設けられている。さらにビームダクト(3)の下端後部
にはガスを金属板(2)の表面に吹き伺けるノズル(4
)がIr’! (、Jけられており該ノズル(4)は配
管(5)、バルブ(6)を介してガスボンベ(7)に連
通されている。4.1 The oxide scale (1) moved in the direction of the arrow via a conveyance device fFt (not shown) is deposited 1 and the total mass ()i
On the -Jl side of ('/here), a beam duct (3) is arranged 1 for guiding laser light (C) generated by a not-shown Rayleigh oscillation field and adjusted by various adjustment devices.
'l, and the beam duct I-(3) is attached to a metal plate (2
) is provided so as to be inclined in a direction opposite to the direction of movement Ji. Furthermore, at the rear of the lower end of the beam duct (3) there is a nozzle (4) that can blow gas onto the surface of the metal plate (2).
) is Ir'! The nozzle (4) is connected to a gas cylinder (7) via a pipe (5) and a valve (6).
尚本実施例で使用するガスは不活性ガスであるアルゴン
と還元ガスである水素との混合ガスである。さらに前記
ビームダクl−(3)の下端前部には金属板(2)の」
一方に空間(8)を構成するフード(9)が成句けられ
ており、該フード(9)はダクト(10)及び集塵機(
11)を介してIJl風機(12)に連通されている。The gas used in this example is a mixed gas of argon, which is an inert gas, and hydrogen, which is a reducing gas. Furthermore, a metal plate (2) is attached to the front of the lower end of the beam duct l-(3).
A hood (9) constituting a space (8) is provided on one side, and the hood (9) includes a duct (10) and a dust collector (
11) to the IJl fan (12).
次に作動を説明すると、第1図において表面に酸化スケ
ール(1)をイ」着した金属板(2)を矢印方向に移動
させ、バルブ(6)を開いて混合ガスをノズル(4)を
介して金属板(2)の表面に向けて噴出させる。Next, to explain the operation, in Fig. 1, the metal plate (2) with oxide scale (1) deposited on its surface is moved in the direction of the arrow, the valve (6) is opened, and the mixed gas is passed through the nozzle (4). The liquid is ejected towards the surface of the metal plate (2) through the metal plate (2).
−・方噴出された混合ガスは1J1風機(12)を作動
させることにより空間(8)から集塵1ffil (]
1)を介してこの状態で図示されないレーーリ゛発振
器より発生され図示されない各種のレーサ尤調す;に装
置1“1″に、1.って所定の照射条件に調整されたレ
ー」ノ゛尤(C)がビームグク1−(3)に導入され、
前jliの1111、音ガスの噴射を受けている金属板
(2)の表面に向けて(((i川される。レーザ光(C
)が照射されると噴射された混合ガスの雰囲気中で・酸
化スケール(])がIR間に高温となり蒸発あるいは溶
融してjl+11合力゛スのIli’5 MCによって
空間(8)中へ舞い−1−がる、。- The mixed gas ejected in the direction is collected from the space (8) by operating the 1J1 wind fan (12) to collect 1ffil (]
In this state, various lasers (not shown) generated by a Rayleigh oscillator (not shown) are tuned through the device 1 (1). A laser beam (C) adjusted to predetermined irradiation conditions is introduced into the beam receiver 1-(3),
1111 of the previous jli, the laser beam (C
) is irradiated, in the atmosphere of the injected mixed gas, the oxide scale () becomes high temperature during the IR, evaporates or melts, and flies into the space (8) by the Ili'5 MC of the jl+11 resultant force. 1-Gal.
尚混合ガスは不活性ガスであるアルゴンと1.’+’f
几ガスである水素との混合体であるため、酸化スケール
(])を除去された後の金属板(2)の表面に+1ひ酸
化スケールが発生するのを防出することかできる。The mixed gas includes argon, which is an inert gas, and 1. '+'f
Since it is a mixture with hydrogen, which is a phosphorus gas, it is possible to prevent +1 arsenide scale from being generated on the surface of the metal plate (2) after the oxide scale (]) has been removed.
また金属の酸化スケールは、金属そのものよりもレーザ
光の吸収率が人きく、;1、た金1+’4その11のの
レーザ光の反射率が大きいためレーーーリ゛光の+14
1 度、 □照射時間等レーザ光の照射条件4・適
宜か冒J(することによって金属素地をほとんど傷つけ
ずに酸化スケールだけを蒸発あるいは溶融させることが
可能である。さらに使用するレーザ光の種J工(として
はC02レーザ光あるいはヤグレーザ光等いずれのもの
を使用してもよいが照射する条件は、レーザ光の種類、
金属の種ヂYiおよび酸化スケール(1)の(=J着状
態等により選定する必要があるが、照射する条件を選定
されたレーザ光(C)はばらつきがなく−・定状態で連
続して照射される。In addition, the oxidized scale of metal has a higher absorption rate for laser light than the metal itself;
Once, □ Laser light irradiation conditions such as irradiation time, etc. 4. It is possible to evaporate or melt only the oxide scale without damaging the metal base. Any type of laser beam, such as C02 laser light or YAG laser light, may be used for J-engineering, but the conditions for irradiation depend on the type of laser light,
It is necessary to select the metal species Yi and the oxide scale (1) depending on the adhesion state, etc., but the laser beam (C) selected for the irradiation conditions does not vary and is continuous in a constant state. irradiated.
このようにして舞L’ J:、がった酸化スケールの蒸
気あるいは溶融状態の微粒子は、冷却されて微細な固体
粒子になり、空間(8)内に浮遊し同時に還元雰囲気中
で酸素を放出しlJI風機(12)の1火中作川を受け
て集塵機(11)に回収される。In this way, the vapor or molten particulates of the sharp oxide scale are cooled and become fine solid particles, which float in the space (8) and at the same time release oxygen in the reducing atmosphere. It is collected by the dust collector (11) after receiving the flow from the JI wind machine (12) during the first fire.
一方酸化スケール(1)を除去する時の金属板(2)の
表面は前述したごとくほとんど傷つくことなくしかも酸
化スケールの11f発生も水素ガスおよびアルゴンガス
によって防出されろため、脱スケール率及び金属板(2
)の表面粗度がばらつくことはない。On the other hand, when the oxide scale (1) is removed, the surface of the metal plate (2) is hardly damaged as mentioned above, and the generation of oxide scale 11f is prevented by hydrogen gas and argon gas, so that the descaling rate and metal Board (2
) has no variation in surface roughness.
以11の説明から明らかなように本発明は金属表面に4
=J着している酸化スケールに対し不?+% (’l:
’う゛f囲気および還元雰囲気中でレーリ)Y; 4
・照用;ッて酸IPスケールを除去するものでJ)ろか
ら、甲にl/−り先の照射条fflを選定調整すること
によって仝j7.rf表面をほとんど傷つけることなく
筒中に酸化スリーールを除去することができろものであ
る。As is clear from the explanation in 11 below, the present invention provides a metal surface with 4
= J Is it bad for the oxide scale that is attached? +% ('l:
4) In an ambient and reducing atmosphere
・For irradiation: It is used to remove acid IP scale, and by selecting and adjusting the irradiation strip ffl to be applied to the instep from J7. It is possible to remove the oxidized three-reel inside the cylinder without damaging the RF surface.
尚実施例では酸化スケールの111発生防由0ためにア
ルゴンと水素との混合ガス4・便用したがアルゴンガス
あるいは水素ガスの中柱ガス4v fJi用してもよい
。In the embodiment, a mixed gas of argon and hydrogen 4 was used to prevent the generation of 111 oxide scale, but a middle column gas of argon gas or hydrogen gas 4v fJi may also be used.
第1図は本発明の実施例を71;す装置図面で、F。 ろ。 FIG. 1 is a drawing of an apparatus according to an embodiment of the present invention. reactor.
Claims (1)
活性と還元との混合雰囲気、;にたは甲独雰囲気中でレ
ーザ光を照射することをt7. l+j°Qとずろj>
属表面の酸化スケール除去方法。At t7. the oxide scale deposited on the surface of the metal is irradiated with laser light in a mixed atmosphere of inertness and reduction; l+j°Q and Zuroj>
Method for removing oxide scale from metal surfaces.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16547482A JPS5953688A (en) | 1982-09-22 | 1982-09-22 | Method for removing oxide scale from metallic surface |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16547482A JPS5953688A (en) | 1982-09-22 | 1982-09-22 | Method for removing oxide scale from metallic surface |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5953688A true JPS5953688A (en) | 1984-03-28 |
Family
ID=15813091
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16547482A Pending JPS5953688A (en) | 1982-09-22 | 1982-09-22 | Method for removing oxide scale from metallic surface |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5953688A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5736709A (en) * | 1996-08-12 | 1998-04-07 | Armco Inc. | Descaling metal with a laser having a very short pulse width and high average power |
US10759004B2 (en) | 2018-06-18 | 2020-09-01 | Raytheon Technologies Corporation | Laser removal of casting scale |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5665986A (en) * | 1979-10-25 | 1981-06-04 | Langen Robert | Rust removing method and device |
-
1982
- 1982-09-22 JP JP16547482A patent/JPS5953688A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5665986A (en) * | 1979-10-25 | 1981-06-04 | Langen Robert | Rust removing method and device |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5736709A (en) * | 1996-08-12 | 1998-04-07 | Armco Inc. | Descaling metal with a laser having a very short pulse width and high average power |
US5948172A (en) * | 1996-08-12 | 1999-09-07 | Neiheisel; Gary L. | Descaling metal with a laser having a very short pulse width and high average power |
US10759004B2 (en) | 2018-06-18 | 2020-09-01 | Raytheon Technologies Corporation | Laser removal of casting scale |
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