JPS58221284A - Roll for preventing burning - Google Patents
Roll for preventing burningInfo
- Publication number
- JPS58221284A JPS58221284A JP10501682A JP10501682A JPS58221284A JP S58221284 A JPS58221284 A JP S58221284A JP 10501682 A JP10501682 A JP 10501682A JP 10501682 A JP10501682 A JP 10501682A JP S58221284 A JPS58221284 A JP S58221284A
- Authority
- JP
- Japan
- Prior art keywords
- roll
- metal
- seizure
- steel
- oxidation
- 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
- Rollers For Roller Conveyors For Transfer (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は高温酸化または水蒸気酸化等の腐食・滉付きの
発生しやすい環境ないしは両者を有する環境で夏用さｉ
する金属製品搬送用ロールや圧延用ロールに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention is suitable for summer use in environments where corrosion and abrasion such as high-temperature oxidation or steam oxidation are likely to occur, or environments containing both.
The present invention relates to rolls for conveying metal products and rolls for rolling.
高温や水蒸気状態でスベリ等を伴う金属板等の金属製品
搬送用０−ルにおいては、主にり０ム（鋳）鋼が使用さ
ｎているが、腐食酸化による摩耗が激しいため初期の低
クロム（鋳）鋼から高クロム（晒）鋼へと移行した。し
かし、高クロム化すると酸化皮膜が薄（なるため機械的
に破壊されやす（かつ酸化皮膜の再生も遅いことから、
０−ルと製品の間に金属接触を生じ焼付きが発生してい
る。Cast steel is mainly used for transporting metal products such as metal plates that slip under high temperature or steam conditions, but due to severe wear due to corrosion and oxidation, initial low There was a transition from chromium (cast) steel to high chromium (bleached) steel. However, when increasing the chromium content, the oxide film becomes thinner and therefore more easily destroyed mechanically (and regeneration of the oxide film is slow).
Metallic contact occurs between the roller and the product, causing seizure.
この機構を第１図に示゛す。すなわち、第１図の低クロ
ムＣ鋳）鋼ロールａでは焼付き防止に必要な酸化皮膜が
成長するまでの金属間接触期間が短か（焼付きは起こり
に（いが酸化摩耗が激しく、高クロム（鋳）鋼ロールｂ
では酸化が起こりにくいため金属間接触期間が長（なり
焼付き乞生じている。したがって、現状では焼付き防止
に屯点馨おき再度低クロム鋼が志向されているが、当然
のことながら水冷時の腐食や使用時の酸化による寿命低
下は避けられない。This mechanism is shown in FIG. In other words, with the low chromium C cast steel roll a in Figure 1, the period of metal-to-metal contact until the oxide film necessary to prevent seizure grows is short (seizure does not occur (seizure does not occur), but oxidative wear is severe and high Chrome (cast) steel roll b
Since oxidation is difficult to occur in steel, the period of metal-to-metal contact is long (and seizure is likely to occur).Therefore, at present, low chromium steel is being used again in order to prevent seizure. Shortened service life due to corrosion and oxidation during use is unavoidable.
本発明はこのような従来のものの問題点ケ解決するため
に提案するもので、腐食酸化による摩耗速度７遅らせる
ために中クロム化等の金属成分の調整７行った合金鋼の
ロールに使用Ｏｎ ＶＣ酸化物等の非金属生成物を生成
させておき、使用開始時から焼付きα）主因である金属
間接触を起こさないようにしたことン特徴とするイ）の
である。すなわち、第１図の本発明Ｄ−ルＣでは酸化摩
耗が少なく、かつ焼付きも生じない。The present invention is proposed to solve the problems of the conventional products, and is used for rolls made of alloy steel that has undergone adjustment of metal components such as medium chromation to slow down the rate of wear caused by corrosion and oxidation. A) The feature is that nonmetallic products such as oxides are generated to prevent metal-to-metal contact, which is the main cause of seizure, from the beginning of use. That is, in the D-Rule C of the present invention shown in FIG. 1, there is little oxidative wear and no seizure occurs.
次に実施例により本発明を具体的に説明する。Next, the present invention will be specifically explained with reference to Examples.
（実施例１ ）
７〜１３％クロム鋳鋼のロール表面を２００〜８００℃
で酸化させ、数μｍ〜数１０μｍの鉄・クロム酸化物か
らなる酸化皮膜ン生成させ、この酸化皮膜の生成によっ
てロール表面で使用開始当初に生じる金属製品との間の
金属間接触ン無くし、この金属製品の温度７００℃、水
蒸気存在下。(Example 1) Roll surface of 7-13% chromium cast steel was heated to 200-800°C.
oxidation to form an oxide film consisting of iron and chromium oxides of several micrometers to several tens of micrometers, and the generation of this oxide film eliminates the metal-to-metal contact between the roll surface and the metal product that occurs at the beginning of use. The temperature of the metal product is 700℃ in the presence of water vapor.
ロール周速２００〜７００焉で焼付試験２行った結果、
焼付きは生じなかった。なお、皮膜処理をしていない同
じ鋼種のロールにおいては焼付きを生じた。As a result of conducting seizure test 2 at a roll circumferential speed of 200 to 700 degrees,
No burn-in occurred. In addition, seizure occurred in rolls of the same steel type that were not coated.
（実施例２）
７〜１′５％クロム鋳鋼のロール表面馨カセイソー／２
１３％、す：Ｊ酸ソータ３％、亜硝酸ンータ及Ｕ ：ｉ
Ｍ） ＠仕始を微敞添加、、（−た浴液中″′Ｃ″１１
０℃に加熱し、Ｏ−指表面に酸化皮膜を生成させ。(Example 2) Roll surface of 7-1'5% chromium cast steel /2
13%, S: J acid sorter 3%, nitrous acid sorter and U: i
M) ＠Small addition of water, ``'C'' in the bath liquid 11
Heat to 0°C to form an oxide film on the O-finger surface.
金属製品の高度２００〜１１００℃、水蒸気存在下で、
実施例１と同様の焼付試鹸を行った結果。Metal products at an altitude of 200-1100℃ in the presence of water vapor,
Results of a baking test similar to Example 1.
焼付きを起さなかった。No burn-in occurred.
以上の様に、ロール使用前にロール表面に皮膜を形成さ
せ、運転初期からＤ−指表面と製品０３間に金属間接触
ケしない様処置乞施すと、焼付きの発生しム゛いことが
明らかである。この現象は、０−指表面と製品間ＩＣ生
ずる金属間接触を阻止することにより焼付きを生じない
と共に。As mentioned above, by forming a film on the roll surface before using the roll and taking measures to prevent metal-to-metal contact between the D-finger surface and product 03 from the beginning of operation, seizure can be prevented. it is obvious. This phenomenon prevents seizure by preventing metal-to-metal contact between the IC and the finger surface and the product.
焼付きαノ発生が運転初期の金属間接触によるものであ
ることを意味している。This means that the occurrence of seizure α is due to metal-to-metal contact at the initial stage of operation.
したがって、Ｏ−ル表面ビ酸化皮膜処理することにより
、焼付きを無くすことができるため。Therefore, by treating the O-ru surface with a hydrogen oxide film, seizure can be eliminated.
上記２つθノ実施例力他に、クロム酸酸化処理。In addition to the above two examples, chromic acid oxidation treatment.
硫化処理、す：Ｊ＃Ｉ／皮膜処理等αノ処理によっても
同様な効果が得らｎる。なお、同様の効果は。A similar effect can be obtained by α treatment such as sulfurization treatment and film treatment. In addition, the same effect is.
低り０ム鋼などの耐食性の低い場合には、水にＶ漬する
とか、０−ルを組込後使用前に水ンかけることにより表
面にサビを形成させろことによっても期侍出来る。If the corrosion resistance is low, such as low-temperature steel, this can be avoided by immersing it in water or by sprinkling it with water after assembling the steel and before using it to form rust on the surface.
第１図は従来Ｄ−ルと本発明ロールにおける金属間接触
時間と酸化摩耗砒との関係図である。
金属間接触’、Ｊｔｔ’１Ｉｉ１′１
第１又FIG. 1 is a diagram showing the relationship between metal-to-metal contact time and oxidative abrasion in the conventional D-roll and the roll of the present invention. Metal-to-metal contact', Jtt'1Ii1'1 1st or
Claims (1)
き防止Ｏ−ル。An anti-seizure o-ru characterized in that an oxide film is provided on the surface of the o-ru.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10501682A JPS58221284A (en) | 1982-06-18 | 1982-06-18 | Roll for preventing burning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10501682A JPS58221284A (en) | 1982-06-18 | 1982-06-18 | Roll for preventing burning |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58221284A true JPS58221284A (en) | 1983-12-22 |
Family
ID=14396262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10501682A Pending JPS58221284A (en) | 1982-06-18 | 1982-06-18 | Roll for preventing burning |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58221284A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5417363A (en) * | 1977-07-09 | 1979-02-08 | Nippon Steel Corp | Core meral for seamless steel pipe piercing machine or rolling mill |
| JPS5655573A (en) * | 1979-10-12 | 1981-05-16 | Nippon Steel Corp | Method and apparatus for forming oxide film rapidly on surface of tool |
-
1982
- 1982-06-18 JP JP10501682A patent/JPS58221284A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5417363A (en) * | 1977-07-09 | 1979-02-08 | Nippon Steel Corp | Core meral for seamless steel pipe piercing machine or rolling mill |
| JPS5655573A (en) * | 1979-10-12 | 1981-05-16 | Nippon Steel Corp | Method and apparatus for forming oxide film rapidly on surface of tool |
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