JP2002311018A - Method for measuring adhesion strength of coating of brick for cement kiln - Google Patents
Method for measuring adhesion strength of coating of brick for cement kilnInfo
- Publication number
- JP2002311018A JP2002311018A JP2001150159A JP2001150159A JP2002311018A JP 2002311018 A JP2002311018 A JP 2002311018A JP 2001150159 A JP2001150159 A JP 2001150159A JP 2001150159 A JP2001150159 A JP 2001150159A JP 2002311018 A JP2002311018 A JP 2002311018A
- Authority
- JP
- Japan
- Prior art keywords
- brick
- coating
- adhesion strength
- horizontal
- strength
- 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
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はセメントロータリーキル
ン用の耐火物のコーチングの付着特性を測定するための
方法に関する。FIELD OF THE INVENTION The present invention relates to a method for determining the adhesion properties of a refractory coating for a cement rotary kiln.
【０００２】[0002]
【従来の技術】セメントロータリーキルンでは使用され
るれんがの表面に、主としてセメント原料に由来する鉱
物が付着し、れんがを高温に熱せられたセメント原料か
ら保護することにより、れんがの耐用が向上することが
知られている。この付着物をコーチングと称し、コーチ
ングを安定して付着させることが耐用向上の１つの手法
となっている。2. Description of the Related Art In a cement rotary kiln, a mineral mainly derived from a cement raw material adheres to the surface of a brick used to protect the brick from the cement raw material heated to a high temperature, thereby improving the service life of the brick. Are known. This deposit is referred to as coating, and one method of improving durability is to attach the coating stably.
【０００３】れんがとコーチングの付着強度の測定は、
従来から様々な方法が行なわれてきたが、簡便で定量的
に測定できる方法はないのが現状である。従来から行な
われている方法には、回転ドラム法やサンドイッチ法な
どがあげられる。[0003] The measurement of the adhesion strength of brick and coaching is
Conventionally, various methods have been used, but at present, there is no method that can measure quantitatively simply. Conventional methods include a rotating drum method and a sandwich method.
【０００４】回転ドラム法は、ドラムの内側に試験れん
がをリング状に内張りし、ドラムを回転させながらバー
ナーで加熱して、セメント原料を入れてコーチングを付
着させる。所定時間後に冷却して、コーチングの付着状
況を観察することによって行う。In the rotating drum method, a test brick is lined inside a drum in a ring shape, heated by a burner while rotating the drum, and a cement raw material is added thereto to adhere a coating. It cools after a predetermined time, and observes the state of adhesion of the coating.
【０００５】サンドイッチ法は、立方体形状のれんが２
個の間にセメント原料をはさみ込んで焼成したのち冷却
し、接着したれんがの曲げ強さを測定することにより行
なう。[0005] The sandwich method uses a cubic brick 2
This is performed by sandwiching a cement raw material between the individual pieces, firing the mixture, cooling the mixture, and measuring the bending strength of the bonded brick.
【０００６】また、特開平６−１３８０２１のように、
れんが面上にコーチングを島状になるように分布させ
て、島状に付着したコーチングをかき落す時の強度を測
定することにより行なう方法もある。Further, as disclosed in Japanese Patent Application Laid-Open No.
There is also a method in which the coating is distributed on the brick surface so as to form islands, and the strength at the time of scraping off the coating attached to the islands is measured.
【０００７】[0007]
【発明が解決しようとする課題】しかし、これらの方法
は、簡便さや定量的であることや再現性に問題がある。
回転ドラム法は肉眼観察により、付着状態を判定するた
めに定量的でない。また、サンドイッチ法は接着部の曲
げ強さを測定する時に初期に発生する亀裂の状態の影響
を大きく受けるためばらつきが大きく再現性に劣る。ま
た特開平６−１３８０２１の方法では、コーチングを付
着できる温度が１４００℃以上と限られていることと、
島状形成物が細かいために極めて定性的で測定が複雑に
なる。However, these methods have problems in simplicity, quantitativeness, and reproducibility.
The rotating drum method is not quantitative to determine the state of adhesion by visual observation. Further, the sandwich method is greatly affected by the state of cracks generated at the initial stage when measuring the bending strength of the bonded portion, so that the variation is large and the reproducibility is poor. Further, according to the method of Japanese Patent Application Laid-Open No. 6-138021, the temperature at which the coating can be applied is limited to 1400 ° C. or higher,
The fineness of the island formations is extremely qualitative and complicates the measurement.
【０００８】本発明は、上記の問題を解決し、簡便に定
量的に再現性を有するコーチング付着試験の方法を提供
することを目的とする。An object of the present invention is to solve the above-mentioned problems and to provide a simple and quantitatively reproducible coating adhesion test method.
【０００９】[0009]
【課題を解決するための手段】本発明のコーチングの付
着強度の測定方法は水平面（以下Ａ面と略す）と、水平
面に対し３０〜６０°の範囲の角度の面（以下Ｂ面と略
す）を有するれんがの、Ｂ面を水平にした状態で、Ｂ面
にセメント原料を均等な厚みになるようにのせ、このれ
んがと同様の傾きを有するれんがをそれぞれのれんがの
Ａ面とＢ面が平行になるようにのせたのち、所定温度で
焼成し、冷却したのち、Ａ面に垂直な力を加えて、接着
面がずれる強度を測定することを特徴とする。According to the method of measuring the adhesion strength of a coating according to the present invention, a horizontal plane (hereinafter abbreviated as A plane) and a plane having an angle in the range of 30 to 60 ° with respect to the horizontal plane (hereinafter abbreviated as B plane) are used. With the B surface horizontal, place the cement material on the B surface so as to have an even thickness, and apply a brick having the same inclination as this brick so that the A surface and the B surface of each brick are parallel. After baking at a predetermined temperature and cooling, a force perpendicular to the surface A is applied to measure the strength at which the bonded surface shifts.
【００１０】[0010]
【作用】本発明において、Ｂ面の傾きは、３０〜６０°
の範囲が好ましい。傾きが３０°未満では、コーチング
がずれにくくなり、加圧中に層内で亀裂がはいり、接着
強度を正しく測定できない。また、６０°より大きくな
ると、層が分割され易くずれる力の測定値が小さくな
り、誤差が大きくなる。In the present invention, the inclination of the plane B is 30 to 60 degrees.
Is preferable. If the inclination is less than 30 °, the coating becomes difficult to shift, cracks are formed in the layer during pressurization, and the adhesive strength cannot be measured correctly. On the other hand, when the angle is larger than 60 °, the measured value of the force at which the layer is easily split and becomes small becomes large, and the error becomes large.
【００１１】使用するセメント原料は、一般に実機で使
用されるために混合されたものを用いることができる。
この混合物は、加熱すると脱炭酸などにより収縮するた
め予め１０００℃で５時間焼成しておくことが好まし
い。[0011] As the cement raw material to be used, a mixed one can be used because it is generally used in an actual machine.
Since this mixture shrinks due to decarboxylation when heated, it is preferable to previously calcine the mixture at 1000 ° C. for 5 hours.
【００１２】[0012]
【実施例】図１は、セメント原料をれんが間にはさみ込
んで焼成し冷却するまでの状態を示す。図２は、強度を
測定する時の状態を示す。FIG. 1 shows a state in which a cement raw material is sandwiched between bricks, fired and cooled. FIG. 2 shows a state when the strength is measured.
【００１３】図中のれんがのＡ面は例えば６０ｍｍ×６
０ｍｍに切り出したもので、したがってＢ面は６０ｍｍ
×約８５ｍｍとなる。れんが間にはさむセメント原料の
厚みは３ｍｍ程で、図１の２個のれんがのうち、下に位
置するれんがのＢ面が水平となるように、このれんがを
下から固定している。冷却後に図２のごとく矢印の方向
から、一般に使用されている強度測定試験機で強度を測
定するため、非常に簡便である。The surface A of the brick in the figure is, for example, 60 mm × 6.
Cut out to 0mm, so the B side is 60mm
× about 85 mm. The thickness of the cement raw material sandwiched between the bricks is about 3 mm, and the two bricks shown in FIG. 1 are fixed from below so that the surface B of the lower one is horizontal. After cooling, the strength is measured from the direction of the arrow as shown in FIG. 2 by a generally used strength measuring tester, which is very simple.
【００１４】Ａ面に対するＢ面の傾きが３０°未満で
は、強度測定時に接着面にずれが発生することなく、コ
ーチングが圧縮されてしまい、コーチングの付着強度を
測定できない。一方６０°より大きくなると、微小な力
で接着面がすぐにずれるために付着強度のばらつきが大
きい。If the inclination of the surface B with respect to the surface A is less than 30 °, the coaching will be compressed without causing a shift in the adhesive surface during the strength measurement, and the adhesion strength of the coating cannot be measured. On the other hand, if the angle is larger than 60 °, the adhesion surface is immediately displaced by a small force, so that the adhesion strength varies greatly.
【００１５】表１は、１４００℃で焼成した時のマグク
ロ，スピネルおよびドロマイトれんがの付着強度をまと
めたものである。Ａ面に対するＢ面の傾きは４５°であ
る。実機ではドロマイト，マグクロ，スピネルの順にコ
ーチングの付着が良いことが判っている。表１に示すよ
うに、本発明の方法により、実機にあった結果が得ら
れ、またばらつきも小さい。Table 1 summarizes the adhesion strength of magcro, spinel and dolomite brick when fired at 1400 ° C. The inclination of the plane B with respect to the plane A is 45 °. In actual equipment, it has been found that dolomite, magcro, and spinel adhere in the order of coating. As shown in Table 1, the method according to the present invention provided results suitable for an actual machine and small variations.
【００１６】[0016]
【表１】 [Table 1]
【００１７】表２は１３５０℃で焼成した時のアルミナ
含有量の異なるスピネルれんがの付着強度である。Ａ面
に対するＢ面の傾きは４５°である。本発明の方法では
所望する付着処理温度での強度を測定できる。Table 2 shows the adhesion strength of spinel bricks having different alumina contents when fired at 1350 ° C. The inclination of the plane B with respect to the plane A is 45 °. According to the method of the present invention, the strength at a desired adhesion treatment temperature can be measured.
【００１８】[0018]
【表２】 [Table 2]
【００１９】[0019]
【発明の効果】本発明は、従来の方法に比べ、れんがの
コーチング付着性を簡便にかつ定量的に測定することが
可能であり、また再現性もあり、コーチングの付着性を
評価するための方法として優位である。According to the present invention, it is possible to easily and quantitatively measure the adhesion of the coating of the brick compared with the conventional method, and it is also reproducible, and the method for evaluating the adhesion of the coating is used. It is superior as a method.
【図１】セメント原料をれんがの間にはさむ時と、焼
成、冷却時のれんがの位置を示す図である。FIG. 1 is a diagram showing the position of a brick when a cement raw material is sandwiched between the bricks and the position of the brick during firing and cooling.
【図２】コーチングの接着強度を測定する時のれんがの
位置を示す図である。FIG. 2 is a view showing the position of a brick when measuring the adhesive strength of a coating.
１，１′…れんが ２…セメント原料 ３…コーチ
ング1,1 '… Brick 2… Cement raw material 3… Coaching
Claims (1)
の角度の面を有するれんがの水平面に対し３０〜６０°
の範囲の角度を有する面を水平にした状態で、この面に
セメント原料をのせ、このれんがと同一の傾きの面を有
するれんがを水平面が平行になるようにのせ、焼成した
のち冷却し、接着したれんがの水平面に垂直な方向か
ら、接着面をずらすように加えた力を測定することによ
る、れんがとコーチングの接着強度の測定方法。1. A brick having a horizontal plane and a surface having an angle in the range of 30 to 60 ° with respect to the horizontal plane is 30 to 60 ° with respect to the horizontal plane of the brick
In a state where the surface having an angle of the range is horizontal, a cement raw material is placed on this surface, and a brick having a surface having the same inclination as the brick is placed so that the horizontal plane is parallel, fired, cooled, and bonded. A method of measuring the adhesive strength between brick and coaching by measuring the force applied to the adhesive surface so as to shift the adhesive surface from the direction perpendicular to the horizontal plane of the brick.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001150159A JP2002311018A (en) | 2001-04-10 | 2001-04-10 | Method for measuring adhesion strength of coating of brick for cement kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001150159A JP2002311018A (en) | 2001-04-10 | 2001-04-10 | Method for measuring adhesion strength of coating of brick for cement kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002311018A true JP2002311018A (en) | 2002-10-23 |
Family
ID=18995220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001150159A Pending JP2002311018A (en) | 2001-04-10 | 2001-04-10 | Method for measuring adhesion strength of coating of brick for cement kiln |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002311018A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102879265A (en) * | 2012-09-14 | 2013-01-16 | 通达耐火技术股份有限公司 | Method for detecting kiln coating suspension performance of fireproof brick for cement kiln |
-
2001
- 2001-04-10 JP JP2001150159A patent/JP2002311018A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102879265A (en) * | 2012-09-14 | 2013-01-16 | 通达耐火技术股份有限公司 | Method for detecting kiln coating suspension performance of fireproof brick for cement kiln |
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