JPH0435614Y2 - - Google Patents
Info
- Publication number
- JPH0435614Y2 JPH0435614Y2 JP1983155950U JP15595083U JPH0435614Y2 JP H0435614 Y2 JPH0435614 Y2 JP H0435614Y2 JP 1983155950 U JP1983155950 U JP 1983155950U JP 15595083 U JP15595083 U JP 15595083U JP H0435614 Y2 JPH0435614 Y2 JP H0435614Y2
- Authority
- JP
- Japan
- Prior art keywords
- layer
- base body
- build
- steel
- roll
- 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.)
- Expired
Links
Landscapes
- Rolls And Other Rotary Bodies (AREA)
- Crushing And Grinding (AREA)
Description
【考案の詳細な説明】
本考案はローラミル（浅皿型）溶接形ロール等
に適用して有効な粉砕用ロールに関するものであ
る。[Detailed Description of the Invention] The present invention relates to a crushing roll that is effective when applied to a roller mill (shallow dish type) welded roll and the like.
石炭を粉砕し、微粉炭をボイラに供給するロー
ラミルにおいて、粉砕用のロールは最近一般鋳鋼
を母材１として、表面に耐摩耗性高炭素−高クロ
ム鋼の肉盛層２を溶接肉盛した溶接形が使用され
ている（第１図）。 In a roller mill that crushes coal and supplies pulverized coal to a boiler, the crushing rolls have recently been made of general cast steel as the base material 1, with a welded overlay layer 2 of wear-resistant high carbon-high chromium steel on the surface. A welded type is used (Figure 1).
従来の溶接形ロールの肉盛形状を第１図につい
て説明すると、従来の肉盛形状は、ロール高さＨ
全域を肉盛層で溶接している為、ローラミル運転
中に石炭層に混入した異物（鉄片等）を噛みこ
み、ロールの第１図Ａ部付近（以下大径端部と呼
ぶ）より肉厚層が剥離脱落する虞れがあつた。 The build-up shape of a conventional welded roll will be explained with reference to FIG.
Since the entire area is welded with a built-up layer, foreign objects (iron pieces, etc.) that got into the coal seam during roller mill operation are trapped, causing the wall to become thicker than the part A in Figure 1 (hereinafter referred to as the large diameter end) of the roll. There was a risk that the layer would peel off.
本考案は前記従来の欠点を解消するために提案
されたもので、鋳鋼製母体と、外周面に形成され
た耐摩耗性溶接肉盛層とからなる截頭円錐筒形粉
砕用ロールにおいて、前記母体の大径端部に形成
された環状壁部を軟鋼肉盛材又は同母体と同一の
鋳鋼により形成すると共に、前記溶接肉盛層を高
炭素−高クロム鋼で形成し、かつ前記壁部の上層
部を同溶接肉盛層で一体に肉盛してなるもので、
大径端部よりの肉盛材の剥離脱落を防止できる粉
砕用ロールを提供せんとするものである。 The present invention was proposed in order to eliminate the above-mentioned conventional drawbacks, and includes a truncated conical cylindrical crushing roll consisting of a cast steel base body and a wear-resistant weld overlay formed on the outer peripheral surface. The annular wall portion formed at the large diameter end of the base body is formed of a mild steel overlay material or the same cast steel as the base body, and the weld overlay layer is formed of high carbon-high chromium steel, and the wall portion The upper layer is integrally overlaid with the same weld overlay layer,
It is an object of the present invention to provide a crushing roll that can prevent overlay material from peeling off and falling off from the large diameter end.
以下本考案の実施例を図面について説明する
と、第２図は本考案の実施例を示すロールの側断
面図で、同ロールは鋳鋼製ロール母体１の外周面
に形成された耐摩耗性溶接肉盛層２（高炭素−高
クロム鋼）を備え、更に前記母体１の大径端部に
軟鋼肉盛材又は同母体１と同一の鋳鋼よりなる環
状壁部３を軟鋼肉盛材又は同母体１と同一の鋳鋼
により形成すると共に、前記溶接肉盛層を高炭素
−高クロム鋼で形成し、かつ前記壁部３の上層部
を同溶接肉盛層で一体に肉盛してなる截頭円錐筒
形粉砕用ロールである。また４はロール軸方向の
分力を示す。 An embodiment of the present invention will be described below with reference to the drawings. Fig. 2 is a side sectional view of a roll showing an embodiment of the present invention, and the roll has a wear-resistant weld pad formed on the outer peripheral surface of a cast steel roll base 1. A layer 2 (high carbon-high chromium steel) is provided, and an annular wall portion 3 made of a mild steel build-up material or the same cast steel as the base body 1 is provided on the large diameter end of the base body 1. 1, the weld build-up layer is formed of high carbon-high chromium steel, and the upper part of the wall portion 3 is integrally built-up with the same weld build-up layer. This is a conical cylindrical crushing roll. Further, 4 indicates the component force in the roll axis direction.
さて第２図に示すように分力４が肉盛層２部に
かかると、従来は環状壁部３が無い為、肉盛層２
どうし、及び肉盛層２と母体１の結合力で分力４
を受けるが、肉盛層２は高炭素−高クロム鋼材で
ある為、相互の結合力は小さく、分力４が異常に
大きくなると、肉盛層２は大径端部より剥離脱落
する。 Now, as shown in Fig. 2, when a component force 4 is applied to the 2nd part of the build-up layer, since there is no annular wall part 3, the build-up layer 2
The component force is 4 due to the bonding force between them and the overlay layer 2 and the base body 1.
However, since the build-up layer 2 is made of high carbon-high chromium steel, the mutual bonding force is small, and if the component force 4 becomes abnormally large, the build-up layer 2 will peel off from the large diameter end.
以上の如く本考案は、母体の大径端部に形成さ
れた環状壁部を、軟鋼肉盛材又は同母体と同一の
鋳鋼により形成したので、母体と環状壁部の密着
性は良好であり、かつ靭性もあることから、図面
矢印の如く溶接肉盛層に作用する剥離力をサポー
トすることができ、大径端部よりの肉盛材の剥離
脱落防止効果を得ることができる。 As described above, in the present invention, the annular wall formed at the large diameter end of the base is made of mild steel overlay material or the same cast steel as the base, so the adhesion between the base and the annular wall is good. Since it also has toughness, it can support the peeling force acting on the weld build-up layer as shown by the arrow in the figure, and it is possible to obtain the effect of preventing the build-up material from peeling off from the large diameter end.
第１図は従来の溶接形ロールの１例を示す側断
面図、第２図は本考案の実施例を示す粉砕用ロー
ルの側断面図である。
図の主要部分の説明、１……ロール母体、２…
…耐摩耗性肉盛層（高炭素−高クロム鋼材）、３
……環状壁部。
FIG. 1 is a side sectional view showing an example of a conventional welded roll, and FIG. 2 is a side sectional view of a crushing roll showing an embodiment of the present invention. Explanation of the main parts of the diagram, 1... Roll base, 2...
...Wear-resistant build-up layer (high carbon-high chromium steel), 3
...Annular wall.
Claims (1)
接肉盛層とからなる截頭円錐筒形粉砕用ロールに
おいて、前記母体の大径端部に形成された環状壁
部を軟鋼肉盛材又は同母体と同一の鋳鋼により形
成すると共に、前記溶接肉盛層を高炭素−高クロ
ム鋼で形成し、かつ前記壁部の上層部を同溶接肉
盛層で一体に肉盛してなることを特徴とする粉砕
用ロール。 In a truncated conical cylindrical crushing roll consisting of a cast steel base body and a wear-resistant weld overlay layer formed on the outer peripheral surface, the annular wall portion formed at the large diameter end of the base body is made of mild steel overlay material. Or, it is formed of the same cast steel as the base body, the weld build-up layer is formed of high carbon-high chromium steel, and the upper layer of the wall is integrally built-up with the same weld build-up layer. A grinding roll featuring:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15595083U JPS6063454U (en) | 1983-10-07 | 1983-10-07 | roll |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15595083U JPS6063454U (en) | 1983-10-07 | 1983-10-07 | roll |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6063454U JPS6063454U (en) | 1985-05-04 |
| JPH0435614Y2 true JPH0435614Y2 (en) | 1992-08-24 |
Family
ID=30344266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15595083U Granted JPS6063454U (en) | 1983-10-07 | 1983-10-07 | roll |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6063454U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104043502A (en) * | 2013-03-13 | 2014-09-17 | 上海重型机器厂有限公司 | Surfacing welding type roller shell of bowl type coal mill and sectional surfacing welding method of roller shell surfacing welding layer |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55153674A (en) * | 1979-05-18 | 1980-11-29 | Mitsubishi Heavy Ind Ltd | Roller for bowl mill |
-
1983
- 1983-10-07 JP JP15595083U patent/JPS6063454U/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104043502A (en) * | 2013-03-13 | 2014-09-17 | 上海重型机器厂有限公司 | Surfacing welding type roller shell of bowl type coal mill and sectional surfacing welding method of roller shell surfacing welding layer |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6063454U (en) | 1985-05-04 |
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