JPH02192453A - Belt cleaner chip - Google Patents
Belt cleaner chipInfo
- Publication number
- JPH02192453A JPH02192453A JP1011132A JP1113289A JPH02192453A JP H02192453 A JPH02192453 A JP H02192453A JP 1011132 A JP1011132 A JP 1011132A JP 1113289 A JP1113289 A JP 1113289A JP H02192453 A JPH02192453 A JP H02192453A
- Authority
- JP
- Japan
- Prior art keywords
- belt cleaner
- hardness
- chip
- wear
- belt
- 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
- 230000009466 transformation Effects 0.000 claims abstract description 11
- 239000006104 solid solution Substances 0.000 claims abstract description 7
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims abstract description 6
- 235000013980 iron oxide Nutrition 0.000 claims description 2
- VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical class [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 20
- QDOXWKRWXJOMAK-UHFFFAOYSA-N chromium(III) oxide Inorganic materials O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 abstract description 14
- 238000005245 sintering Methods 0.000 abstract description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 2
- 229910052593 corundum Inorganic materials 0.000 abstract 2
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract 2
- 230000009257 reactivity Effects 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 26
- 239000000919 ceramic Substances 0.000 description 23
- 238000000034 method Methods 0.000 description 14
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Inorganic materials O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 11
- 229910052742 iron Inorganic materials 0.000 description 10
- 239000000843 powder Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 5
- 238000007790 scraping Methods 0.000 description 5
- 239000002245 particle Substances 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 239000011195 cermet Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000001513 hot isostatic pressing Methods 0.000 description 3
- 238000007731 hot pressing Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 229910052575 non-oxide ceramic Inorganic materials 0.000 description 3
- 239000011225 non-oxide ceramic Substances 0.000 description 3
- 238000006748 scratching Methods 0.000 description 3
- 230000002393 scratching effect Effects 0.000 description 3
- 229910009043 WC-Co Inorganic materials 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000011121 hardwood Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Landscapes
- Compositions Of Oxide Ceramics (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、鉄鉱石、焼結鉱等の鉄成分を含む原料を運搬
するベルトコンベヤにおいて、ベルトの表面に付着した
残留物を掻き取るためのベルトクリーナーチップに関す
るものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention is a belt conveyor that conveys raw materials containing iron components such as iron ore and sintered ore, and is used to scrape off residue adhering to the surface of the belt. This relates to a belt cleaner chip.
［従来の技術］
コンベヤ等のベルトにおいて、付着物を掻き取る目的で
、一般に耐摩耗性に優れた高硬度の１１１ｃｍＣｏ Ｈ
Ａ硬材がベルトクリーナーチップ、とじて使用されてい
る。これらサーメツト製ベルトクリーナーの耐用性向上
対策として、耐摩耗セラミックスの応用開発が成されて
いるが、ただ単にセラミックスをベルトクリーナーチッ
プへ適用しても耐摩耗性は向上しない。例えば、特開昭
６３−．１８５８５８号公報でＺｒ０２−３ｍｏｌ１％
Ｙ２０．材買のベルトクリーナーチップへの適用が記載
されているが、本発明者らが以前同材質を焼結鉱搬送用
ベルトクリーナーチップへ適用したがその耐用性は、Ｗ
Ｃ−Ｃｏ超硬材の馬程度であった。[Prior art] For the purpose of scraping off deposits on belts such as conveyors, 111 cm Co H, which has high hardness and excellent wear resistance, is generally used.
A hardwood is used for belt cleaner tips and binding. As a measure to improve the durability of these cermet belt cleaners, the application of wear-resistant ceramics has been developed, but simply applying ceramics to the belt cleaner tip does not improve the wear resistance. For example, JP-A-63-. Zr02-3mol1% in Publication No. 185858
Y20. Application to belt cleaner chips for material purchases is described, but the inventors previously applied the same material to belt cleaner chips for conveying sintered ore, but its durability was
It was comparable to a horse made of C-Co cemented carbide.
［発明が解決しようとする課題］
従って、本発明は現状のサーメツト製ベルトクリーナー
チップ、特にＷＣ−Ｃｏ超硬材以上の耐摩耗性を有する
ベルトクリーナーチップ材質を提供することにある。[Problems to be Solved by the Invention] Therefore, an object of the present invention is to provide a belt cleaner tip material having wear resistance superior to that of current cermet belt cleaner tips, particularly WC-Co cemented carbide.
［課題を解決するための手段］
本発明は、鉄鉱石、焼結鉱等の鉄成分を含む原料を搬送
するベルトコンベヤのベルトクリーナーチップへセラミ
ックスを通用すべく、鋭意研究に努めた結果、摩耗メカ
ニズムを解明し、その知見に基づき長寿命のセラミック
スベルトクリーナーチップを発明したものである。すな
わち本発明は、化学的性質としては、鉄酸化物と反応し
難く、かつ結晶的には３００℃迄の温度域で変態が発生
せず、かつ物理的性質としてはグイ’／カース硬度Ｈｖ
ａ １７００ｋｇ／ｍｍ’以上を有するＡｌｌ！２ｓｓ
、ＡＪｂＯｓ−Ｃｒ２０３固溶体、Ｃｒ２Ｏ，かうなる
ベルトクリーナーチップである。[Means for Solving the Problems] The present invention was developed as a result of intensive research into the use of ceramics in belt cleaner chips of belt conveyors that transport raw materials containing iron components such as iron ore and sintered ore. The mechanism was clarified, and based on that knowledge, a long-life ceramic belt cleaner chip was invented. In other words, the present invention has chemical properties such that it is difficult to react with iron oxides, crystallization does not undergo transformation in a temperature range of up to 300°C, and physical properties such as Gui'/Karth hardness Hv.
a All with 1700kg/mm' or more! 2ss
, AJbOs-Cr203 solid solution, Cr2O, etc. are belt cleaner chips.
以下本発明の内容について詳述する。The content of the present invention will be explained in detail below.
ベルトクリーナーチップの様に搬送粉体との摩耗を考え
る場合、その主な摩耗メカニズムは、搬送粉体がベルト
クリーナーチップを引っ掻き削る表面引っ掻き、搬送粉
体がベルトクリーナーチップ擾き取り面につきささり掻
き取り面を破壊する表面破壊、搬送粉体がベルトクリー
ナーチップと反応しベルトクリーナーチップが溶損する
表面溶損、が考えられる。摩耗メカニズムは、上記の３
つが単独の場合もあり、また複数にからみあった場合も
あり、非常に複雑である。そしてこのような摩耗に優れ
た材質は、高硬度で、高靭性でかつ高耐反応性であれば
良いと考えられる。しかし現状では、これらの条件を満
足できる材料は殆どなく、ＷＣ−Ｃｏ超硬材が最も適し
た材料として使用されている。When considering abrasion with conveyed powder such as a belt cleaner tip, the main abrasion mechanisms are surface scratching caused by the conveyed powder scratching and scraping the belt cleaner tip, and scraping caused by the conveyed powder touching the scraping surface of the belt cleaner tip. Possible causes include surface damage, which destroys the chamfer, and surface erosion, where the conveyed powder reacts with the belt cleaner chip and the belt cleaner chip is eroded. The wear mechanism is the 3 above.
It is extremely complex, as it may be a single entity or may be intertwined with multiple entities. It is considered that such a material with excellent wear resistance should have high hardness, high toughness, and high reaction resistance. However, at present, there are almost no materials that can satisfy these conditions, and WC-Co superhard material is used as the most suitable material.
そこで本発明者らは、鉄鉱石及び焼結鉱搬送用のベルト
クリーナーチップの材料開発を実施する目的で、表１に
示した各種材料を約３ケ月間適用し、その使用後調査を
行ない、その主たる摩耗原因を解明し、その知見を基に
、高耐用性ベルトクリーナーチップを開発したものであ
る。Therefore, in order to develop materials for belt cleaner chips for transporting iron ore and sintered ore, the present inventors applied the various materials shown in Table 1 for about 3 months and conducted an investigation after use. We clarified the main cause of wear and developed a highly durable belt cleaner tip based on that knowledge.
表１の結果より、いずれのセラミックスもＷＣ−ＩｎＧ
ｏサーメット焼結体よりも耐摩耗性は劣フていた。特に
、Ｎ００６の５ｉｓＮａ、Ｎｏ、７のＳＩＧ、Ｎｏ、Ｂ
の５１八文ＯＮ等のＳｔ系非酸化物セラミックチップの
摩耗量は、ＷＣ−１５亀ｃｏに比較し、３〜６倍であり
た。使用後Ｓｌ系非酸化物セラミックチップの解析より
、これらの材料系は掻き取り面のＳｉＣ，５ｉｓＮ４．
５ｉＡＱＯＮ中のＳｔが酸化され、Ｓｉｎ。From the results in Table 1, it can be seen that both ceramics are WC-InG
o The wear resistance was inferior to that of the cermet sintered body. In particular, 5isNa of N006, SIG of 7, No, B
The wear amount of St-based non-oxide ceramic chips such as 51 Hachimon ON was 3 to 6 times that of WC-15 Kameco. Analysis of used Sl-based non-oxide ceramic chips reveals that these material systems have SiC, 5isN4.
St in 5iAQON is oxidized and becomes Sin.
となりこれが搬送粉体のＦｅ成分と反応し、２ＦｅＯ−
３ｉｎ２となって損耗していることが判明した。従って
、ベルトクリーナーチップ材質としては、Ｆｅ成分と反
応し難いセラミックスを適用すべきであることが判明し
た。This reacts with the Fe component of the transported powder to form 2FeO-
It turned out that it was 3in2 and was worn out. Therefore, it was found that ceramics, which do not easily react with Fe components, should be used as the material for the belt cleaner tip.
ところが、セラミックスのベルトクリーナーチップへの
適用において、Ｆｅ成分と反応し難いセラミックスのみ
では、効果が不充分であり、更に高硬度と高靭性が要求
される。However, when applying ceramics to belt cleaner tips, the effect is insufficient if only ceramics that do not easily react with Fe components are used, and high hardness and high toughness are also required.
そこで、表１に示した前述のＳｔ系非酸化物セラミック
ス以外のＮｏ：１〜Ｎｏ、５材質について、グイッカー
ス硬度もしくは破壊靭性値と摩耗指数の関係を整理し、
第１図、第２図に示した。Therefore, we organized the relationship between Guickers hardness or fracture toughness value and wear index for materials No. 1 to No. 5 other than the above-mentioned St-based non-oxide ceramics shown in Table 1.
It is shown in Fig. 1 and Fig. 2.
第１図より、グイッカース硬度が大きい方が耐摩耗性に
優れている傾向が窺えるが、破壊靭性値では、第２図の
如く相関が殆ど認められない。From FIG. 1, it can be seen that the larger the Guickers hardness, the better the wear resistance, but in terms of fracture toughness values, there is almost no correlation as shown in FIG. 2.
そこで、各セラミックスの使用後解析を実施した結果、
ＺｒＯ，を含むセラミックス（Ｎｏ、３、Ｎｏ、４）と
含まないセラミックスでは、その摩耗パターンが違うこ
とを見い出した。具体的には、３ｍｏ１１ｏ４Ｙ２Ｏ３
−Ｚｒ０２、＾Ｊ１２０．−１３ｍｏＱ％ＦＺｒ０２の
使用後ベルトクリーナーチップの掻き取り面を調査する
と、ＺｒＯ２が正方晶から単斜晶へ相変態していること
が判明した。部分安定化ＺｒＯ２等は、２００〜３００
℃の温度に長時間暴露されると上述の変態をすることが
知られている。実際のベルトコンベヤは常温で使用され
るが、ベルトクリーナーチップの掻き取り面は、常時ベ
ルトコンベヤに接触しているため、摩擦熱が発生し、ま
たＺｒＯ２の低熱伝導率等の特性により、２００〜３０
０℃になっていることが確認された。従つて、この熱の
ためＺｒＯ２が上述の相変態をし、との相変態によるＺ
ｒＯ２の体積収縮が起こり、クラックを発生させ摩耗を
促進したものと考えられる。従って、３００℃迄の温度
域で変態が発生しないセラミックス材質が良いことが判
明した。Therefore, as a result of conducting post-use analysis of each ceramic,
It was found that the wear patterns of ceramics containing ZrO (No. 3, No. 4) and ceramics containing no ZrO were different. Specifically, 3mo11o4Y2O3
-Zr02, ^J120. An examination of the scraped surface of the belt cleaner chip after use of -13moQ%FZr02 revealed that ZrO2 had undergone a phase transformation from tetragonal to monoclinic. Partially stabilized ZrO2 etc. are 200-300
It is known that the above-mentioned transformation occurs when exposed to temperatures of °C for a long time. Actual belt conveyors are used at room temperature, but since the scraping surface of the belt cleaner chip is constantly in contact with the belt conveyor, frictional heat is generated, and due to the characteristics such as the low thermal conductivity of ZrO2, 30
It was confirmed that the temperature was 0°C. Therefore, due to this heat, ZrO2 undergoes the above-mentioned phase transformation, and ZrO2 due to the phase transformation with
It is thought that volumetric contraction of rO2 occurred, generating cracks and accelerating wear. Therefore, it has been found that a ceramic material that does not undergo transformation in a temperature range of up to 300° C. is preferable.
これ迄に述べた条件を満足する材質は、表１の中では、
Ｎ００２の八１ｉｄｓ、Ｎ０９５の３Ａ１２０ｓ・２Ｓ
ＬＯ２、Ｎｏ、１のＷＣ−１５９６Ｃｏの３種である。Materials that satisfy the conditions described so far are listed in Table 1.
N002 81ids, N095 3A120s/2S
There are three types: LO2, No. 1, and WC-1596Co.
この３種についてヴィッカース硬度もしくは破壊靭性値
と摩耗指数の関係を第１図、第２図より調査すると、グ
イッカース硬度には依存し、硬度が大きい程摩耗しない
ことがわかるが、破壊靭性値が増加しても、耐摩耗性の
顕著な増加は見られない。If we investigate the relationship between Vickers hardness or fracture toughness value and wear index for these three types from Figures 1 and 2, we can see that it depends on Vickers hardness, and the higher the hardness, the less wear there is, but the fracture toughness value increases. However, no significant increase in wear resistance was observed.
そこで、これらの材質の掻き取り面をミクロ観察すると
、引っ掻き傷跡のみが観察され、破壊されながら摩耗す
る現象は観察されなかった。When the scraped surfaces of these materials were microscopically observed, only scratch marks were observed, and no phenomenon of wear while being destroyed was observed.
破壊されながら摩耗する現象は、まず粉体がベルトクリ
ーナーチップへ突きささり、その時に発生するクラック
により摩耗する。従って粉体がベルトクリーナーチップ
へ突きささらないなら、クラックは発生しない、粉体が
ベルトクリーナーチップへ突きささる条件は、粉体の硬
度がベルトクリーナーチップと同程度かもしくは大きい
場合である。本発明者等が焼結鉱、鉄鉱石の硬度を測定
したところその値は、Ｈｖｗ １０００ｋｇ／ｍｍ”以
下であった。ベルトクリーナーチップ材の硬度が大きい
場合は、表面の破壊は発生せず、引っ掻きによる摩耗の
みである。従って耐摩耗対策には、鉄鉱石及び焼結鉱を
対象としている限り、セラミックスの破壊靭性値の向上
はあまり意味がなく、高硬度化が有効な手段であると考
えられ、又、ＷＣ−１５零Ｃｏの摩耗特性を上まわるた
めには、グイッカース硬度１５５０ｋｇ／ｅｉ”以上の
硬度が要求されると考えられる。The phenomenon of wear while being destroyed is that powder first hits the belt cleaner tip, and the cracks that occur at that time cause wear. Therefore, if the powder does not hit the belt cleaner chip, cracks will not occur.The condition for the powder to hit the belt cleaner chip is when the hardness of the powder is equal to or greater than that of the belt cleaner chip. When the inventors measured the hardness of sintered ore and iron ore, the value was Hvw 1000 kg/mm" or less. If the hardness of the belt cleaner chip material is high, no surface destruction will occur; The only wear that occurs is due to scratching.Therefore, as long as iron ore and sintered ore are used as anti-wear measures, improving the fracture toughness of ceramics has little meaning, and increasing hardness is considered to be an effective measure. In addition, in order to exceed the wear characteristics of WC-15 zero Co, it is considered that a hardness of 1550 kg/ei'' or higher in Guickers hardness is required.
この知見に基づいて、表２に示した製造方法及びへ１２
０ｓ含有量を変えて、硬度の違う＾１ｚＯｓを作成し、
ベルトクリーナーチップに適用し、前述と同様の試験を
行った。Based on this knowledge, the manufacturing method shown in Table 2 and
By changing the 0s content, we created ^1zOs with different hardness,
The test was applied to a belt cleaner chip and conducted in the same manner as described above.
表２をグイッカース硬度と摩耗指数の関係で整理した結
果を第３図に示す、第３図より、硬度を上げれば、耐摩
耗性が向上できることが判明した。The results of organizing Table 2 according to the relationship between Guickers hardness and wear index are shown in FIG. 3. From FIG. 3, it was found that the wear resistance could be improved by increasing the hardness.
以上より、焼結鉱、鉄鉱石等のＦｅ成分を含む原料を搬
送するベルトコンベヤ用クリーナーチップは、ヴィッカ
ース硬度がＷＣ−１３、Ａｌ２Ｏ３−Ｃｏ以上の硬度を
有し、Ｆｅ成分と反応し難く、かつ３００ を迄の温度
域で変態が発生しないＡ１１ａｓで構成されたベルトク
リーナーチップが最適であると判明した。From the above, cleaner chips for belt conveyors that convey raw materials containing Fe components such as sintered ore and iron ore have a Vickers hardness of WC-13 and Al2O3-Co or higher, and are difficult to react with Fe components. It was also found that a belt cleaner chip made of A11as, which does not undergo transformation in a temperature range up to 300 °C, is optimal.
本発明において、ヴィッカース硬度１７００ｋｇ／ｍｎ
２以上と限定したのは、次の理由によるものである。高
硬度化を達成する手段として一般にホットプレス法（Ｈ
Ｐ法）、熱間静水圧プレス法（ＨＩＰ法）が採用されて
いるが、これらの手段でＡｕ２Ｏｓ系セラミツクスを試
作すると全てグイッカース硬度が１７００ｋｇ／ｍｍ”
以上になるために、本発明においては、グイッカース硬
度を１７００ｋｇ／ａｍ’以上と限定した。In the present invention, the Vickers hardness is 1700 kg/mn.
The reason for limiting the number to 2 or more is as follows. Hot pressing method (H
P method) and hot isostatic pressing method (HIP method) are used, but when Au2Os ceramics are prototyped using these methods, the Gwickers hardness is 1700 kg/mm.
In order to achieve the above, in the present invention, the Guickers hardness is limited to 1700 kg/am' or more.
更に、Ｆｅ成分との耐反応性が優れる材質を鋭意探索し
た結果、前記Ａ９．２（ｈの他ＡＲｚＯｓ−Ｃｒ２０ｓ
固溶体、Ｃｒ２Ｏ３が有効であることが判明した。Furthermore, as a result of intensive searches for materials with excellent reaction resistance with Fe components, in addition to the above A9.2 (h), ARzOs-Cr20s
A solid solution, Cr2O3, was found to be effective.
また、これらの材料は、３００℃迄の温度での変態も認
められない、そこで、これらの材料でホットプレス法を
用い、高硬度化を図りベルトクリーナーチップを試作し
、前述と同様の適用試験を実施した。In addition, these materials do not show any transformation at temperatures up to 300°C, so we used a hot press method to increase the hardness of these materials, fabricated a prototype belt cleaner chip, and conducted the same application tests as mentioned above. was carried out.
表３をヴィッカース硬度と摩耗指数の関係で整理した結
果を第４図に示す。３４４図からもわかるようにＮｏ、
１１〜１３のセラミックスは、ＩＣ−１５ＸＧｏに比較
し、約２倍の耐摩耗性を有することが判明した。FIG. 4 shows the results of Table 3 arranged according to the relationship between Vickers hardness and wear index. As you can see from Figure 344, No.
It was found that ceramics Nos. 11 to 13 had about twice the wear resistance as compared to IC-15XGo.
本発明のベルトクリーナーチップの製造にあたっては、
通常のセラミックス成形・焼結方法を適用すれば良い。In manufacturing the belt cleaner chip of the present invention,
Ordinary ceramic molding and sintering methods may be applied.
例えば、１μｍ以下の＾１２０３等のセラミックス原料
を一軸ブレス、ラバープレス、スリップキャスト等によ
って所望の形に成形し、焼成してセラミックスを得れば
よい。この焼成法としては、高硬度を得るために、ホッ
トプレス法（ＨＰ法）、熱間静水圧プレス法（ｔＩＩＰ
法）等が望ましい、この様にして得られたセラミックス
を所定の寸法に加工・研磨し、本発明のベルトクリーナ
ーチップが得られる。ベルトクリーナーチップはセラミ
ックス１体物で構成する必要なく、掻き取り部分にのみ
セラミックスを接合等して取り付けても良い。For example, a ceramic raw material such as ^1203 having a diameter of 1 μm or less may be formed into a desired shape using a uniaxial press, a rubber press, a slip cast, etc., and then fired to obtain a ceramic. This firing method includes hot pressing method (HP method), hot isostatic pressing method (tIIP method), and hot isostatic pressing method (tIIP method) in order to obtain high hardness.
The belt cleaner chip of the present invention can be obtained by processing and polishing the ceramic thus obtained into a predetermined size. The belt cleaner tip does not need to be made of a single ceramic item, and may be attached by bonding ceramics only to the scraped portion.
尚、以上は主として、ＡＱ＊Ｏｓ、八１ｚＯｓ−Ｃｒ２
０３固溶体、Ｃｒ２（１３の単体の場合について示した
が、必要に応じて２種又は３種の混合焼結体で本発明の
ベルトクリーナーチップを得ることもできる。In addition, the above is mainly AQ*Os, 81zOs-Cr2
03 solid solution and Cr2 (13) have been shown as single substances, but if necessary, the belt cleaner chip of the present invention can also be obtained with a mixed sintered body of two or three types.
［実 施 例］
実施例−１
粒径１μｍ以下の純度９９．５％Ａｆｆｉ２０ｓを、１
５００℃、２００ｋｇ／ｃＩＩ”の圧力で３０分ホット
プレスし、Ａｆｆｉ２ｅｓ焼結体を得た。得られた焼結
体のグイッカース硬度は１８００ｋｇ／ａｍ’であった
。焼結鉱及び鉄鉱石を搬送するコンベヤベルトのクリー
ナーチップとして本焼結体を適用した結果、従来使用し
ていた１ｊｌｃ−ＩＳＸＣｏに比べて、約１．５倍の９
ケ月間の耐用性を得た。[Example] Example-1 99.5% purity Affi20s with a particle size of 1 μm or less was
Hot pressing was carried out for 30 minutes at 500°C and a pressure of 200 kg/cII'' to obtain an Affi2es sintered body. The Guickers hardness of the obtained sintered body was 1800 kg/am'. Sintered ore and iron ore were transported. As a result of applying this sintered body as a cleaner chip for conveyor belts, the 9
Durability was obtained for several months.
実施例−２
粒径０．５．ｕｍ以下の純度９９．９９％のＣｒｚＯｓ
を、１８００℃、５００ｋｇ／ｃｍ２の圧力で１時間ホ
ットプレスし、Ｃｒ、０．焼結体を得た。得られた焼結
体のグイッカース硬度は２４５０ｋｇ／＋＋ｕａ’であ
った。Example-2 Particle size 0.5. 99.99% purity CrzOs below um
was hot-pressed at 1800°C and a pressure of 500 kg/cm2 for 1 hour to obtain Cr, 0. A sintered body was obtained. The Guickers hardness of the obtained sintered body was 2450 kg/++ua'.
焼結鉱を搬送するコンベヤベルトのクリーナーチップと
して本焼結体を適用した結果、従来便用していたＷｅ−
１５零Ｃｏに比べて約３．２倍の１．８ケ年の耐用性を
得た。As a result of applying this sintered body as a cleaner chip for a conveyor belt that conveys sintered ore, the We-
It has a durability of 1.8 years, approximately 3.2 times that of 150 Co.
実施例−３
粒径１μａ＋以下のへ皇、０３を７０ ｍｏｌ’＊、粒
径０．５μｍ以下のＣｒ２Ｏ３を３０ ｓｏ１％をアト
リクシ■ンミルで混合し、１５００℃％２００ｋｇ／ｃ
ｍ２の圧力で４０分ホットプレスし、＾ｆｆ１２０ｓ−
３０１０．Ｑ９６Ｃｒ２０ｓの固溶体の焼結体を得た。Example-3 70 mol'* of Cr2O3 with a particle size of 1μa+ or less and 30 SO1% of Cr2O3 with a particle size of 0.5μm or less were mixed in an atrixin mill, and the mixture was heated at 1500℃%200kg/c.
Hot press at m2 pressure for 40 minutes, ^ff120s-
3010. A solid solution sintered body of Q96Cr20s was obtained.
得られた焼結体のグイッカース硬度は２０５０ｋｇ／＋
＋ｓ＋”であった。焼結鉱及び鉄鉱石を搬送するコンベ
ヤベルトのクリーナーチップとして本焼結体を適用した
結果、従来使用していたＷＣ−１５零ＧＯに比べて、約
２倍の１年間の耐用性のを得た。The Guickers hardness of the obtained sintered body is 2050 kg/+
+s+''.As a result of applying this sintered body as a cleaner chip for a conveyor belt that conveys sintered ore and iron ore, the sintered body lasted approximately twice as long in one year compared to the conventionally used WC-15 Zero GO. of durability was obtained.
［発明の効果］
このように本発明によるセラミックスベルトクリーナー
チップは、従来のＷＣ−１５ｋｃｏサ一メツト焼結体に
比べて、著しく耐用性が向上し、交換回数の低減、設備
コストの削減が図れる等顕著な効果がある。[Effects of the Invention] As described above, the ceramic belt cleaner tip according to the present invention has significantly improved durability compared to the conventional WC-15kco ceramic sintered body, and can reduce the number of replacements and equipment costs. There are significant effects such as
第１図は、各種ベルトクリーナーチップのグイッカース
硬度と摩耗指数の関係を示す図、第２図は、各種ベルト
クリーナーチップの破壊靭性値と摩耗指数の関係を示す
図、第３図は、各種へｆｈＯｓベルトクリーナーチップ
のグイッカース硬度と摩耗指数の関係を示す図、第４図
は、ＡＱ＊０ｓ−Ｃｒ２０３系セラミツクスベルトクリ
ーナーチツプのグイッカース硬度と摩耗指数の関係を示
す図である。
第１図
第２図
他４名Figure 1 is a diagram showing the relationship between Guickers hardness and wear index of various belt cleaner chips, Figure 2 is a diagram showing the relationship between fracture toughness value and wear index of various belt cleaner chips, and Figure 3 is a diagram showing the relationship between various types of belt cleaner chips. FIG. 4 is a diagram showing the relationship between the Guickers hardness and the wear index of the fhOs belt cleaner chip. FIG. 4 is a diagram showing the relationship between the Guickers hardness and the wear index of the AQ*0s-Cr203 series ceramic belt cleaner chip. Figure 1 Figure 2 4 others
Claims (1)
鉄酸化物と反応し難く、かつ、３００℃迄の温度域で変
態が発生しないＡｌ＿２Ｏ＿３、Ａｌ＿２Ｏ＿３−Ｃｒ
＿２Ｏ＿３固溶体、Ｃｒ＿２Ｏ＿３の１種又は２種又は
３種の焼結体よりなるベルトクリーナーチップ1 Vickers hardness 1700kg/mm^2 or more,
Al_2O_3, Al_2O_3-Cr that is difficult to react with iron oxides and does not undergo transformation in the temperature range up to 300℃
Belt cleaner chip made of one, two, or three types of sintered body of _2O_3 solid solution and Cr_2O_3
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1011132A JPH02192453A (en) | 1989-01-20 | 1989-01-20 | Belt cleaner chip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1011132A JPH02192453A (en) | 1989-01-20 | 1989-01-20 | Belt cleaner chip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02192453A true JPH02192453A (en) | 1990-07-30 |
Family
ID=11769489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1011132A Pending JPH02192453A (en) | 1989-01-20 | 1989-01-20 | Belt cleaner chip |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02192453A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011219257A (en) * | 2010-04-14 | 2011-11-04 | Hakubi:Kk | Conveying belt cleaner |
-
1989
- 1989-01-20 JP JP1011132A patent/JPH02192453A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011219257A (en) * | 2010-04-14 | 2011-11-04 | Hakubi:Kk | Conveying belt cleaner |
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