JPH0788770A - Shot blast material - Google Patents
Shot blast materialInfo
- Publication number
- JPH0788770A JPH0788770A JP23333493A JP23333493A JPH0788770A JP H0788770 A JPH0788770 A JP H0788770A JP 23333493 A JP23333493 A JP 23333493A JP 23333493 A JP23333493 A JP 23333493A JP H0788770 A JPH0788770 A JP H0788770A
- Authority
- JP
- Japan
- Prior art keywords
- cleaning
- treated
- slag
- steel
- particle size
- 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.)
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Links
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- Application Of Or Painting With Fluid Materials (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、研掃材に関するもの
であって、特に、船舶、橋梁、石油タンクおよびゲート
等に表面塗装を施すのに先立って行うブラスト処理にお
いて、粉塵の発生がなくしかも研掃効果（作業性）に優
れ、さらには塗料と塗装面の密着性を向上させるのに効
果的に用いられる研掃材を提供する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an abrasive cleaning material, and in particular, in the blasting process prior to surface coating of ships, bridges, oil tanks, gates, etc., no dust is generated. Further, the present invention provides a polishing / cleaning material which has an excellent polishing / cleaning effect (workability) and which can be effectively used for improving the adhesion between the paint and the coated surface.
【０００２】[0002]
【従来の技術】一般に、普通鋼、特殊鋼あるいは合金鋼
等の鋼材（以下、「被処理鋼材」という。）の表面に塗
装を施す場合、その塗装処理の前に、鋼材表面に研掃材
を吹き付ける、いわゆる、“ブラスト処理”が行われ
る。このブラスト処理の目的の１つは、前記被処理鋼材
表面の酸化層、表面汚染物または古い塗装面などを剥離
除去し、塗装に適する清浄な表面を形成することによ
り、塗料と被処理材表面との密着性を高めるところにあ
る。この処理では、被処理材表面の酸化層、汚染物また
は古い塗装層等を可能な限り全て除去することが重要な
ポイントであり、この除去性能の目安としては通常、
“研掃効果”という指標を用いて判断している。また、
この処理の他の目的は、塗装の密着性を高めるために、
被塗装面表面に適当な粗さの凹凸をつけることにある。2. Description of the Related Art Generally, when coating the surface of a steel material such as ordinary steel, special steel or alloy steel (hereinafter referred to as "steel to be treated"), the surface of the steel material is polished and cleaned before the coating treatment. The so-called "blast treatment" is performed. One of the purposes of this blasting treatment is to remove the oxide layer, surface contaminants, or old paint surface of the surface of the steel to be treated by peeling off to form a clean surface suitable for painting, and thus the paint and the surface of the material to be treated. It is to improve the adhesion with. In this treatment, it is important to remove as much as possible the oxide layer, contaminants, old paint layer, etc. on the surface of the material to be treated.
Judgment is made using an index called "polishing effect". Also,
The other purpose of this treatment is to increase the adhesion of the coating,
The purpose is to make unevenness of appropriate roughness on the surface to be coated.
【０００３】一般に、“塗装密着性”と被塗装面の“表
面粗さ”とは、密接な関係があるとされており、塗装密
着性向上のための被処理鋼材の表面形状は、細かくかつ
深い凹凸を呈していることが好ましい。それは、被処理
鋼材の表面をこのような表面粗さにすることにより、い
わゆるアンカー効果が高くなり、塗装の密着性が向上す
るからである。そのために、従来、上記ブラスト処理を
行うことにより、鋼材表面を所定の粗さにすることによ
り、事実、それなりに満足すべき塗装密着性が得られて
いるのが実情である。なお、こうしたブラスト処理に使
用する研掃材としては、サンド、グリッド、ガーネッ
ト、ガラスビーズ、鋼球および転炉スラグ等がよく知ら
れている。Generally, it is said that the "coating adhesion" and the "surface roughness" of the surface to be coated have a close relationship, and the surface shape of the treated steel material for improving the coating adhesion is fine and It is preferable that it has deep irregularities. This is because by making the surface of the steel material to be treated such a surface roughness, the so-called anchor effect is enhanced and the adhesion of the coating is improved. Therefore, conventionally, the blasting treatment is performed to make the surface of the steel material to have a predetermined roughness, and in fact, the coating adhesion that is satisfactory to that extent is actually obtained. Note that sand, grids, garnets, glass beads, steel balls, converter slag, and the like are well known as abrasives used for such blast treatment.
【０００４】[0004]
【発明が解決しようとする課題】ところで、このような
研掃材を用いて前記被処理材のブラスト処理を行うと、
ガーネット、ガラスビーズ、転炉スラグのような研掃材
では、被処理材表面に吹き付けたときの衝撃によって該
研掃材が割れて粉化し、作業場一面に粉塵が飛散し、ひ
いてはブラスト作業そのものができないような環境にな
るという課題があった。また、上掲の研掃材では、満足
するアンカー効果を得るため、あるいは古い塗料を完全
に除去するためには、この被処理材の表面を時間をかけ
てゆっくりとブラストしたり、この処理を繰り返して行
う必要があった。そのために、ブラスト処理のための作
業時間が長くかかり、いわゆる“研掃効果”が悪いとい
う問題があった。また、ブラスト処理の後に保護皮膜が
ない状態で大気に曝されるために早期発錆するという問
題もあった。By the way, when the blast treatment of the material to be treated is carried out using such a cleaning material,
Garnets, glass beads, and abrasive materials such as converter slag, the abrasive material is cracked and powdered by the impact when sprayed on the surface of the material to be treated, dust is scattered all over the workplace, and the blasting operation itself There was a problem of becoming an environment that cannot be done. In addition, with the above-mentioned abrasives, in order to obtain a satisfactory anchor effect or to completely remove old paint, the surface of the material to be treated is slowly blasted over time or this treatment is performed. It had to be repeated. Therefore, there is a problem in that the work time for the blast treatment is long and the so-called "polishing effect" is poor. In addition, there is a problem that rusting occurs early after the blast treatment because the film is exposed to the atmosphere without a protective film.
【０００５】この点、上記グリッドや鋼球のような研掃
材は、粉塵の拡散が軽微で、研掃効果にも優れるが、屋
外で処理せざるを得ない船舶、橋梁、ゲート等のブラス
ト処理の場合、上掲の既知研掃材を用いると、やはり保
護皮膜がない状態で大気に曝されるために、被処理材表
面が湿度の影響により短時間のうちに錆びてしまうの
で、塗料との密着性が悪くなり、被処理材表面に塗布し
た塗料が剥離しやすいという問題があった。しかも、研
掃材自身も湿気により錆びやすく、研掃材どうしがくっ
ついて使用できなくなるというような問題さえ抱えてい
た。従って、グリッドや鋼球のような既知の研掃材は、
使用できる環境が限られているのが現状である。In this respect, the above-mentioned abrasive materials such as grids and steel balls have a small dust diffusion and are excellent in abrasive effect, but they must be treated outdoors, and blasting of ships, bridges, gates, etc. In the case of treatment, if the above-mentioned known cleaning agents are used, the surface of the material to be treated will rust in a short time due to the influence of humidity because it will be exposed to the atmosphere without a protective film, There is a problem in that the adhesiveness with and deteriorates, and the paint applied to the surface of the material to be treated is easily peeled off. Moreover, the cleaning and cleaning materials themselves are apt to rust due to moisture, and there is even a problem that the cleaning and cleaning materials stick to each other and cannot be used. Therefore, known abrasives such as grids and steel balls
Currently, the usable environment is limited.
【０００６】この発明の目的は、ブラスト処理にあたっ
て研掃材粉化に伴う粉塵の発生がなく、一方で優れた塗
装密着性と若干の耐食性を被処理材表面に付与するのに
有効に作用する研掃材を提供することにある。An object of the present invention is to effectively prevent dust from being generated due to pulverization of a cleaning material during blasting, and to impart excellent coating adhesion and some corrosion resistance to the surface of the material to be treated. To provide abrasives.
【０００７】[0007]
【課題を解決するための手段】上掲の従来技術が抱えて
いる課題を解決するために鋭意研究を続けた結果、発明
者らは、以下のような要旨構成で示される本発明に想到
した。すなわち本発明は、主要成分組成が、MgO ：20〜
40wt％、Al2O3 ：20〜40wt％、SiO2：25〜45wt％を含
み、残部がその他の少量の酸化物を含有して構成された
高炭素フェロクロム精錬スラグの粒状物からなり、かつ
その粒径が 0.2〜2.5 mmの大きさであることを特徴とす
る研掃材である。なお、上記精錬スラグの粒状物は、粒
度分布曲線の最大値を示す最多数径が0.9 〜1.4 mmの大
きさであることが好ましく、また、上記粒状物は、風砕
等の急冷凝固により製造した、球状もしくは略球状を呈
するものが好ましい。As a result of continuing intensive research to solve the problems of the above-mentioned prior art, the inventors have conceived the present invention having the following gist structure. . That is, in the present invention, the main component composition is MgO: 20-
40wt%, Al 2 O 3: 20~40wt%, SiO 2: comprises 25～45Wt%, consists granules high carbon ferrochromium refining slag balance is configured to contain a small amount of other oxides, and It is a polishing and cleaning material characterized by having a particle size of 0.2 to 2.5 mm. The refined slag granules preferably have a maximum diameter showing a maximum value of a particle size distribution curve of 0.9 to 1.4 mm, and the granules are produced by rapid solidification such as air crushing. Those having a spherical shape or a substantially spherical shape are preferable.
【０００８】[0008]
【作用】本発明にかかる研掃材の特徴は、主成分として
少なくともMg, AlおよびSiの酸化物を含む酸化物系の精
錬スラグの粒状物を用いることにある。まず、精錬スラ
グに着目した理由は、後で詳しく述べるように、ブラス
ト処理時に、被処理材表面に衝突しても割れにくく、た
とえ割れたとしても粉塵を発生させない内部構造を持
ち、かつ、研掃効果に優れているので、短時間でブラス
ト処理が可能となる。また、若干の耐食性をも被処理材
に付与することができるので、塗装までの間に時間的間
隔が生じてもそれほど発錆の影響を考慮する必要がな
く、塗装の工程管理も容易にできる。A feature of the blast cleaning material according to the present invention is that it uses oxide-based refining slag particles containing at least Mg, Al and Si oxides as main components. First of all, the reason for paying attention to the refining slag is, as will be described in detail later, that it has an internal structure that is difficult to crack even if it collides with the surface of the material to be treated during blasting, and does not generate dust even if it breaks. The excellent scavenging effect enables blasting in a short time. Further, since it is possible to impart a slight amount of corrosion resistance to the material to be treated, it is not necessary to consider the influence of rusting so much even if there is a time interval between coatings, and it is possible to easily control the coating process. .
【０００９】かかる研掃材として、本発明では、酸化物
系精錬スラグのうちでもとくに、高炭素フェロクロムを
電気炉で溶融して製造する際に副次的に生成される溶融
スラグを粒状化したものが用いられるが、その成分組成
の一例を表１に示す。In the present invention, as such a blasting material, among the oxide-based refining slag, the molten slag, which is by-produced when the high carbon ferrochrome is melted in an electric furnace to be manufactured, is granulated. Those used are shown in Table 1 as an example of the component composition.
【００１０】[0010]
【表１】 [Table 1]
【００１１】本発明において、上述した精錬スラグのう
ちでも、とくに高炭素フェロクロム精錬スラグに着目し
た理由は、この精錬スラグはMg, AlおよびSiの酸化物を
含むために、硬く、かつ割れにくいことと、構造が主と
してMgとAlの酸化物のスピネル構造にある。それ故に、
ブラスト処理に当たって、たとえ被処理材表面に衝突し
たときの衝撃により割れたとしても結晶粒界で割れるの
で、微粉状とならずに比較的大きな粒状物となり、粉塵
を発生させないのである。また、硬度が高くかつ靱性に
も優れるので、ブラスト処理によって被処理材表面に適
切なアンカーを形成するのに効果がある。さらに、この
研掃材を被処理材たる鋼表面に強く吹き付けた場合、鋼
材表面のFeと機械的に結合し、または時には互いに反応
して、被処理鋼材表面に、あたかも合金層の如き酸化物
浸透層を形成する。しかも、この酸化物浸透層は、容易
に剥離することなく、いわゆる鋼材表面の改質層として
存在するものである。In the present invention, among the above-mentioned refining slags, the reason for paying particular attention to the high carbon ferrochrome refining slag is that the refining slag is hard and difficult to crack because it contains oxides of Mg, Al and Si. And, the structure is mainly in the spinel structure of Mg and Al oxides. Therefore,
In the blasting treatment, even if the material is cracked by the impact when it collides with the surface of the material to be treated, the material is broken at the crystal grain boundaries, so that it does not become a fine powder but becomes a relatively large granular material and does not generate dust. Further, since it has high hardness and excellent toughness, it is effective in forming an appropriate anchor on the surface of the material to be treated by the blast treatment. Furthermore, when this abrasive material is strongly sprayed onto the steel surface to be treated, it mechanically bonds with Fe on the steel surface, or sometimes reacts with each other, and the oxide on the surface of the treated steel appears as if it were an oxide such as an alloy layer. Form a permeation layer. Moreover, the oxide permeation layer does not easily peel off and is present as a so-called modified layer on the surface of the steel material.
【００１２】なお、本発明の研掃材は、上記高炭素フェ
ロクロム精錬スラグのうち、特に、破砕し整粒した粒状
物ではなく、溶融したスラグを大気中に噴霧する方法等
により製造した急冷凝固物；即ち、粒形状が球形または
略球形を呈する粒状物を用いることが好ましい。その理
由は、このような粒状スラグの場合、被処理鋼材に衝突
したときの衝突エネルギーが極めて高く、主としてMg,
AlおよびSiの酸化物と被処理鋼材の表面近傍のFeとの混
合、もしくは反応して合金化したような酸化物浸透層か
らなる表面改質層を容易に形成することができるからで
ある。The abrasive cleaning material of the present invention is, among the above-mentioned high carbon ferrochrome refining slags, in particular, a rapid solidification produced by a method of spraying a molten slag into the air, not a crushed and sized granule. Object; that is, it is preferable to use a granular material having a spherical shape or a substantially spherical shape. The reason is that in the case of such granular slag, the collision energy when colliding with the steel to be treated is extremely high, and mainly Mg,
This is because it is possible to easily form a surface modification layer composed of an oxide permeation layer which is formed by mixing or reacting the oxides of Al and Si with Fe in the vicinity of the surface of the steel to be treated and reacting with them.
【００１３】ところで、本発明において、上述したMg,
AlおよびSiを含む酸化物の精錬スラグを使用することに
より、本発明の効果を実現することができるが、当然の
ことながら、本発明のこのような効果は、高炭素フェロ
クロム精錬スラグのみに限らず、同様の成分を有する組
成物を、単独で電気炉等で製造して粒状物としたものを
使用しても実現されることはいうまでもない。By the way, in the present invention, the above-mentioned Mg,
By using the refining slag of the oxide containing Al and Si, the effects of the present invention can be realized, but, of course, such effects of the present invention are limited to only high carbon ferrochrome refining slag. Needless to say, it can be realized by using a composition having the same components alone and using the composition produced in an electric furnace or the like to form a granular material.
【００１４】ここで、上記高炭素フェロクロム精錬スラ
グは、主要成分の組成は、Al2O3 ：20〜40wt％、MgO ：
20〜40wt％、SiO2：25〜45wt％、残部はその他の少量の
酸化物からなるものを用いる。このスラグの成分組成を
上記の範囲に限定する理由は次のとおりである。まず、
Al2O3 , MgO , SiO2の組成を上記のように限定したの
は、この組成のスラグだと、粉塵の発生が少なく、かつ
塗装の際に塗料と塗装面の密着性を向上させることがで
き、研掃効果が高いためである。というのは、解明が十
分に行われているわけではないが、発明者らの考えで
は、Al2O3 の量が多いと、硬度, 靱性がともに高くなり
好ましいが、あまりに多くなりすぎると脆くなりかつ割
れ易くなる。しかし、少なすぎると硬度が低くなること
や靱性が小さくなることによって割れ易くかつ粉化し易
くなるので、上記の範囲に限定される。なお、スラグ中
のAl含有量を高めるために、電気炉中に酸化アルミニウ
ム原料を予め添加し、上記精錬スラグ中のアルミニウム
含有量を調整することは有効な手段である。Here, the composition of the main components of the high carbon ferrochrome refining slag is as follows: Al 2 O 3 : 20-40 wt%, MgO:
20 to 40 wt%, SiO 2 : 25 to 45 wt%, and the balance consisting of a small amount of other oxides is used. The reason why the component composition of this slag is limited to the above range is as follows. First,
The composition of Al 2 O 3 , MgO, and SiO 2 is limited as described above, with the slag of this composition, there is less generation of dust, and it is necessary to improve the adhesion between the paint and the coating surface during coating. This is because the cleaning effect is high. Although it has not been fully clarified, the inventors believe that a large amount of Al 2 O 3 increases both hardness and toughness, which is preferable, but too large an amount makes it brittle. And easily cracked. However, if the amount is too small, the hardness becomes low and the toughness becomes small, so that it is easily cracked and pulverized, so that it is limited to the above range. In order to increase the Al content in the slag, it is an effective means to previously add an aluminum oxide raw material into the electric furnace and adjust the aluminum content in the refining slag.
【００１５】MgO , SiO2は、硬度, 靱性改善に影響を与
える要因であり、特にMgO は、Al2O 3 とスピネルを形成
し、硬度が高くなり、被処理材表面に衝突したときに粉
化しないための成分であり、特にAl2O3 とのバランス
上、上記範囲に限定される。MgO, SiO2Influences the improvement of hardness and toughness.
Factor, especially MgO2O 3Forming a spinel with
However, when the hardness increases and it collides with the surface of the processed material, powder
It is a component to prevent conversion, especially Al2O3Balance with
Above, it is limited to the above range.
【００１６】なお、上記の他に、CaＯを含有してもよい
が、このCaは、多くなるとスラグがアルカリ性となると
ともに、やわらかく、かつ脆くなり粉化し易くなるの
で、10wt％以下、好ましくは4.0 wt％以下であることが
好ましい。In addition to the above, CaO may be contained, but if this Ca is large, the slag becomes alkaline, and it becomes soft and brittle and easily pulverizes, so 10 wt% or less, preferably 4.0 It is preferably not more than wt%.
【００１７】なお、上記精錬スラグの粒状物を用いる場
合、その粒径を適当なサイズのものに調整することが必
要である。すなわち、そうした好適な粒径としては、0.
2 〜2.5 mmのものを用いる。下限の粒径が 0.2mmより小
さいと、割れることはないがそれ自体が粒径が小さくな
るためにあたかも粉塵となって大気中に舞い上がるよう
な挙動を示す。一方、上限の粒径が2.5 mmを超えると、
却って割れ易くなり、粉化するおそれが少なくなる。こ
のことから、本発明研掃材の粒径は 0.2〜2.5mmの範囲
のものを用いる必要がある。When using the above-mentioned refined slag particles, it is necessary to adjust the particle size to a suitable size. That is, such a suitable particle size is 0.
Use a 2-2.5 mm one. If the lower limit particle size is less than 0.2 mm, it will not crack, but will behave as if it were dust and fly up to the atmosphere because the particle size itself becomes smaller. On the other hand, if the upper limit particle size exceeds 2.5 mm,
On the contrary, it becomes easier to crack and less likely to be pulverized. From this, it is necessary to use the abrasive material of the present invention having a particle size in the range of 0.2 to 2.5 mm.
【００１８】なお、この研掃材は、最多数径( 粒度分布
曲線の最大値を示す粒径) が 0.9〜1.4 mmの大きさであ
ることが好ましく、0.9 mmより小さいと、仕上面の白色
度は向上するが、研掃に要する時間がかかり過ぎ、研掃
効果が低下することと、研掃材の使用量が多くなり、1.
4 mmを超えると割れやすくなり、粉化するおそれがあ
り、かえって研掃効果が低下するからである。また、こ
のような最多数径とするための粒度分布は、下記のよう
な範囲にあることが好ましい。 0.2 〜0.4 mm： 3〜15％ 0.4 〜0.6 mm： 5〜20％ 0.6 〜1.2 mm：30〜45％ 1.2 〜2.5 mm：30〜50％ であることが好ましい。なお、本発明において、0.2 〜
0.6 mm：50〜70％、0.6 〜2.5 mm：30〜50％の粒度分布
として、最多数径を0.4 〜0.8 mmに調整することによ
り、研掃効果は低下するが、ISO で規定される素地調整
のランクをニアホワイトからホワイトに向上させること
ができる。The polishing and cleaning material preferably has a maximum number of particles (particle size showing the maximum value of the particle size distribution curve) of 0.9 to 1.4 mm. However, the time required for polishing and cleaning will be too long, the cleaning and cleaning effect will decrease, and the amount of polishing and cleaning material used will increase.
This is because if it exceeds 4 mm, it is likely to be cracked and powdered, and the polishing effect is rather reduced. Further, the particle size distribution for obtaining such a maximum number of diameters is preferably in the following range. 0.2 to 0.4 mm: 3 to 15% 0.4 to 0.6 mm: 5 to 20% 0.6 to 1.2 mm: 30 to 45% 1.2 to 2.5 mm: 30 to 50% is preferable. In the present invention, 0.2-
0.6 mm: 50 to 70%, 0.6 to 2.5 mm: 30 to 50% As the particle size distribution is adjusted to 0.4 to 0.8 mm, the polishing effect is reduced, but the ISO standard The adjustment rank can be increased from near white to white.
【００１９】[0019]
【実施例】以下、本発明の実施例について説明する。 (1) 高炭素フェロクロムの精錬工程で副生した溶融スラ
グを取鍋に収容し、これを大気中にて噴霧して急冷する
ことにより、球形および略球形を呈する粒状体、即ち、
精錬スラグの粒状体を得た。次いで、この粒状体から
0.2〜2.5 mmのものを選別して研掃材〔Ａ〕とし、次い
で 0.4〜2.5 mmのものを所定の粒度分布となるよう選別
して研掃材〔Ｂ〕とした。なお、0.2 〜1.2 mmのものを
同様に特定の粒度分布となるように選別して研掃材
〔Ｃ〕とした。粒度分布を表２に示す。EXAMPLES Examples of the present invention will be described below. (1) The molten slag produced as a by-product in the refining process of high carbon ferrochrome is stored in a ladle, and by spraying this in the atmosphere and quenching it, a granular body having a spherical shape and a substantially spherical shape, that is,
A granular body of refined slag was obtained. Then from this granulate
Those having a diameter of 0.2 to 2.5 mm were selected to be a polishing / cleaning material [A], and those having a diameter of 0.4 to 2.5 mm were selected to have a predetermined particle size distribution to obtain a polishing / cleaning material [B]. In addition, abrasives having a diameter of 0.2 to 1.2 mm were similarly selected so as to have a specific particle size distribution to obtain a polishing and cleaning material [C]. The particle size distribution is shown in Table 2.
【００２０】[0020]
【表２】 [Table 2]
【００２１】(2) 次に、一般構造用軟鋼 SS 400 材の鋼
板(100× 100×1.6 mm) を被処理鋼材として、これを通
常の直圧式ブラスト処理装置内に設置し、次いでISO Sa
2.5に仕上がるように、上記研掃材〔Ａ〕, 〔Ｂ〕およ
び〔C 〕を用いてブラスト処理を行った。また、比較例
として上記SS 400材鋼板に対し、通常行われる方法で、
サンドブラストおよびグリッドブラスト処理を行った。(2) Next, a general structural mild steel SS 400 steel plate (100 × 100 × 1.6 mm) was used as the steel to be treated, which was installed in a normal direct pressure type blast treatment equipment, and then ISO Sa
Blasting treatment was carried out using the above-mentioned abrasive cleaning materials [A], [B] and [C] so that the finish was 2.5. In addition, as a comparative example, in the above-mentioned SS 400 steel sheet, by the method usually performed,
Sand blasting and grid blasting were performed.
【００２２】なお、この処理の際、全ての上記鋼板上に
故意に塗料および接着剤を汚染物として付着させたが、
本ブラスト処理により、本発明の実施例、比較例ともに
表面の汚染物は完全に除去された。そのときの結果を表
３に示す。表３から、本発明の研掃材〔Ａ〕，〔Ｂ〕
は、いずれも研掃速度が極めて速く、単位面積当たりの
研掃材使用量も少なく、作業性（研掃効果）に優れるこ
とが判った。一方、研掃材〔Ｃ〕は、研掃速度は遅いが
単位面積当たりの使用量が少なく、素地調整ランクが向
上することが判った。During this treatment, paints and adhesives were intentionally attached as contaminants on all the above steel plates.
By this blasting treatment, the surface contaminants were completely removed in both the inventive example and the comparative example. The results at that time are shown in Table 3. From Table 3, the abrasive materials [A] and [B] of the present invention
It was found that each of them had an extremely high polishing speed, a small amount of polishing material used per unit area, and excellent workability (polishing effect). On the other hand, it was found that the polishing and cleaning material [C] had a low polishing and cleaning speed but a small amount used per unit area, and the foundation adjustment rank was improved.
【００２３】[0023]
【表３】 [Table 3]
【００２４】ついで、本発明の研掃材〔Ａ〕および従来
の研掃材（ガーネット）について、吸引式ブラスト処理
を繰り返し行い、処理後0.42mmのふるいで篩うことによ
って（再使用できる研掃材の）残存率を測定した。結果
を表４に示す。この表４に示す結果から、ガーネットは
５回で半数以上が粉化したが、本発明の研掃材は、30回
繰り返しても65％以上が球状のままであった。また、ブ
ラスト処理作業中、ガーネットは、粉塵の発生が激しく
防塵マスクの着用が必要であったが、本発明の研掃材
は、粉塵の発生が極めて少なかった。Then, the abrasive cleaning agent [A] of the present invention and the conventional abrasive cleaning agent (garnet) were repeatedly subjected to a suction blast treatment, and after the treatment, they were sieved with a 0.42 mm sieve (reusable abrasive cleaning). The residual rate (of the material) was measured. The results are shown in Table 4. From the results shown in Table 4, more than half of the garnet was pulverized after 5 cycles, but the abrasive material of the present invention remained spherical for 65% or more even after 30 cycles. Further, during the blasting work, the garnet generated a lot of dust, and it was necessary to wear a dust mask, but the abrasive material of the present invention generated very little dust.
【００２５】[0025]
【表４】 [Table 4]
【００２６】また、上記各処理により得られた処理鋼材
について、その表面をＸ線微小部分析法（ＥＰＭＡ）お
よびオージェ電子分光法（ＡＥＳ）により分析した。そ
の結果を図１に示す。図１から、処理材は、一部にスラ
グ物質が打ち込まれた部位も観察されたが、試料表面全
体にスラグ成分であるMg, Al, SiおよびCaと下地材料で
あるFeと酸素との混合反応した層が確認された。また、
この表面改質層の厚さは部位によって差があるが、少な
くとも 0.5μｍ以上であることが確認された。Further, the surface of the treated steel material obtained by each of the above treatments was analyzed by the X-ray microscopic analysis method (EPMA) and Auger electron spectroscopy (AES). The result is shown in FIG. From Fig. 1, it was observed that the treated material had a part in which the slag substance was implanted, but the entire surface of the sample was mixed with Mg, Al, Si, and Ca, which are slag components, and Fe and oxygen, which were the base materials. A reacted layer was confirmed. Also,
It was confirmed that the thickness of this surface-modified layer was at least 0.5 μm or more, although it varied depending on the site.
【００２７】これに対し、一般的な研掃処理であるサン
ドフラスト処理およびグリッドブラスト処理を施した処
理鋼材の表面は、FeおよびＯ以外の元素の顕著な存在は
確認されなかった。On the other hand, no remarkable existence of elements other than Fe and O was confirmed on the surface of the treated steel material subjected to the general sandblasting treatment and the sandblasting treatment and the grid blasting treatment.
【００２８】[0028]
【発明の効果】以上説明したように、本発明の研掃材
は、優れた研掃効果を有しながら、粉塵の発生が極めて
少なく、作業性に優れる。しかも、被処理材表面に、ス
ラグ成分と下地材料（Fe）の組成物が混合反応した表面
改質層を形成するのに有効に作用するから、鋼材表面な
どに極めて高い塗装密着性を付与することができる。As described above, the polishing / cleaning material of the present invention has an excellent polishing / cleaning effect, but has extremely little dust generation and excellent workability. Moreover, since it acts effectively on the surface of the material to be treated to form a surface-modified layer in which the composition of the slag component and the base material (Fe) is mixed and reacted, it imparts extremely high coating adhesion to the surface of the steel material. be able to.
【図１】実施例の実験結果を示す処理鋼材の表面状態を
示すＡＥＳ深さ分析の結果を示す略線図である。FIG. 1 is a schematic diagram showing a result of AES depth analysis showing a surface state of a treated steel material showing an experimental result of an example.
Claims (3)
Al2O3 ：20〜40wt％、SiO2：25〜45wt％を含み、残部が
その他の少量の酸化物を含有して構成された高炭素フェ
ロクロム精錬スラグの粒状物からなり、かつその粒径が
0.2〜2.5 mmの大きさであることを特徴とする研掃材。1. The composition of the main components is MgO: 20-40 wt%,
Al 2 O 3 : 20 to 40 wt%, SiO 2 : 25 to 45 wt%, the balance consisting of granular particles of high carbon ferrochrome refining slag composed of a small amount of other oxides, and its particle size But
Abrasive cleaning material characterized by having a size of 0.2 to 2.5 mm.
線の最大値を示す最多数径が 0.9〜1.4 mmの大きさであ
ることを特徴とする請求項１記載の研掃材。2. The cleaning and cleaning material according to claim 1, wherein the fine particles of the refined slag have a maximum diameter of 0.9 to 1.4 mm that indicates the maximum value of the particle size distribution curve.
より製造されることを特徴とする請求項１記載の研掃
材。3. The abrasive material according to claim 1, wherein the granular material of refining slag is produced by rapid solidification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23333493A JP2642046B2 (en) | 1993-09-20 | 1993-09-20 | Abrasive material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23333493A JP2642046B2 (en) | 1993-09-20 | 1993-09-20 | Abrasive material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0788770A true JPH0788770A (en) | 1995-04-04 |
| JP2642046B2 JP2642046B2 (en) | 1997-08-20 |
Family
ID=16953525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23333493A Expired - Lifetime JP2642046B2 (en) | 1993-09-20 | 1993-09-20 | Abrasive material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2642046B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0894571A1 (en) * | 1997-07-29 | 1999-02-03 | JAPAN METALS & CHEMICALS CO., LTD. | Blast material |
| JP2002363544A (en) * | 2001-06-04 | 2002-12-18 | Sinto Brator Co Ltd | Process for producing spherical projecting material, and projecting material |
| JP2009073940A (en) * | 2007-09-20 | 2009-04-09 | Toyota Motor Corp | Abrasive and method for producing abrasive |
| WO2016143413A1 (en) * | 2015-03-12 | 2016-09-15 | 新東工業株式会社 | Projectile material |
| WO2016143414A1 (en) * | 2015-03-12 | 2016-09-15 | 新東工業株式会社 | Method for blast-cleaning casting product |
| CN110202488A (en) * | 2019-05-10 | 2019-09-06 | 广东家美陶瓷有限公司 | Porcelain ceramic particle water knife sand and preparation method thereof |
-
1993
- 1993-09-20 JP JP23333493A patent/JP2642046B2/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0894571A1 (en) * | 1997-07-29 | 1999-02-03 | JAPAN METALS & CHEMICALS CO., LTD. | Blast material |
| JP2002363544A (en) * | 2001-06-04 | 2002-12-18 | Sinto Brator Co Ltd | Process for producing spherical projecting material, and projecting material |
| JP2009073940A (en) * | 2007-09-20 | 2009-04-09 | Toyota Motor Corp | Abrasive and method for producing abrasive |
| WO2016143413A1 (en) * | 2015-03-12 | 2016-09-15 | 新東工業株式会社 | Projectile material |
| WO2016143414A1 (en) * | 2015-03-12 | 2016-09-15 | 新東工業株式会社 | Method for blast-cleaning casting product |
| JPWO2016143413A1 (en) * | 2015-03-12 | 2017-07-20 | 新東工業株式会社 | Projection material |
| CN107000165A (en) * | 2015-03-12 | 2017-08-01 | 新东工业株式会社 | Project material |
| CN107000164A (en) * | 2015-03-12 | 2017-08-01 | 新东工业株式会社 | The impeller blasting method of casting |
| JPWO2016143414A1 (en) * | 2015-03-12 | 2017-08-17 | 新東工業株式会社 | Casting polishing method |
| CN107000165B (en) * | 2015-03-12 | 2018-11-02 | 新东工业株式会社 | Project material |
| CN107000164B (en) * | 2015-03-12 | 2019-04-12 | 新东工业株式会社 | The abrasive cleaning method of casting |
| CN110202488A (en) * | 2019-05-10 | 2019-09-06 | 广东家美陶瓷有限公司 | Porcelain ceramic particle water knife sand and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2642046B2 (en) | 1997-08-20 |
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