JPS63235446A - Iron powder discharging apparatus - Google Patents
Iron powder discharging apparatusInfo
- Publication number
- JPS63235446A JPS63235446A JP62068920A JP6892087A JPS63235446A JP S63235446 A JPS63235446 A JP S63235446A JP 62068920 A JP62068920 A JP 62068920A JP 6892087 A JP6892087 A JP 6892087A JP S63235446 A JPS63235446 A JP S63235446A
- Authority
- JP
- Japan
- Prior art keywords
- iron powder
- build
- discharging
- solid solution
- surface layer
- 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
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 37
- 238000007599 discharging Methods 0.000 title abstract 7
- 239000006104 solid solution Substances 0.000 claims abstract description 17
- 239000002344 surface layer Substances 0.000 claims abstract description 7
- 239000012535 impurity Substances 0.000 claims abstract description 4
- 238000005520 cutting process Methods 0.000 claims description 21
- 239000002184 metal Substances 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000011247 coating layer Substances 0.000 abstract description 10
- 238000000034 method Methods 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 239000000203 mixture Substances 0.000 abstract description 7
- 238000007751 thermal spraying Methods 0.000 abstract description 4
- 239000000919 ceramic Substances 0.000 abstract description 3
- 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
- 239000002131 composite material Substances 0.000 abstract 1
- QDOXWKRWXJOMAK-UHFFFAOYSA-N dichromium trioxide Chemical compound O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 description 9
- 238000012360 testing method Methods 0.000 description 6
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 239000012256 powdered iron Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Landscapes
- Powder Metallurgy (AREA)
Abstract
Description
【発明の詳細な説明】
(産業上の利用分野)
本発明は、鉄粉を原料とした製品1例えば使捨てカイロ
等の製造設備において、鉄粉を一定量ずつ計り取るため
の、いわゆる鉄粉切り出し装置であって、耐摩耗性に優
れ、ビルドアップの発生を防止した鉄粉切り出し装置に
関する。Detailed Description of the Invention (Field of Industrial Application) The present invention is a method for measuring so-called iron powder in order to measure iron powder in fixed amounts in production equipment for products 1 made from iron powder, such as disposable body warmers. This invention relates to an iron powder cutting device that has excellent wear resistance and prevents build-up.
(従来の技術)
鉄粉を利用した製品、例えば使捨てカイロや脱酸素剤の
製造設備では、粉末状の鉄粉を他の補助原料とともに一
定量ずつ計り取る工程を有する。(Prior Art) Manufacturing equipment for products using iron powder, such as disposable body warmers and oxygen absorbers, includes a step of measuring out a fixed amount of powdered iron powder together with other auxiliary raw materials.
この時秤量するための装置はほとんどが金属で作られて
いるが、鉄粉が空気中の酸素や他の補助原料と反応し酸
化鉄となり、該装置上に付着し次第に成長する(以下こ
の生成物をビルドアップと呼ぶ)。Most of the weighing equipment used at this time is made of metal, but iron powder reacts with oxygen in the air and other auxiliary materials to form iron oxide, which adheres to the equipment and gradually grows (hereinafter, this production things are called build-ups).
従って、鉄粉を供給し、そこから一定量の鉄粉を計り、
この鉄粉を次工程へ送り出す鉄粉切り出し装置の表面の
ビルドアップは、該装置の内容積を小さくすることから
正確な計量を困難にすることや、切り出しリングの表面
と、このリングに対向して設けられている平板の表面が
ビルドアップにより固着し、切り出しのための運動を困
難にするため、都度このビルドアップを取り除く作業を
せざるを得ない。Therefore, supply iron powder, measure a certain amount of iron powder from it,
The build-up on the surface of the iron powder cutting device that sends this iron powder to the next process reduces the internal volume of the device, making accurate measurement difficult, and the build-up on the surface of the cutting ring and the surface facing this ring. The surface of the flat plate provided with the plate is fixed due to build-up, making it difficult to move for cutting out, so it is necessary to remove the build-up each time.
そのため、このビルドアップを防止する方法として、切
り出し装置の表面に合成樹脂等のビルドアップの起きな
い材料をコーティングをすることが試みられてきている
が、摩耗が激しく装置の交換周期を短くするとともに、
生産性の悪化、メンテコストの増加をもたらすため、実
用には至っていない。同等の効果を得る方法として、装
置表面にテープを貼る方法が広く試みられてきているが
、摩耗の問題は解決されず、都度テープを貼り変えるた
めの生産休止時間を設けざるを得ない状態にある。Therefore, as a method to prevent this build-up, attempts have been made to coat the surface of the cutting device with a material that does not cause build-up, such as synthetic resin, but this causes severe wear and reduces the replacement cycle of the device. ,
This method has not been put into practical use because it causes a decline in productivity and an increase in maintenance costs. Applying tape to the surface of the equipment has been widely tried as a method to achieve the same effect, but the issue of wear has not been resolved, and production has been forced to take down time to reapply the tape each time. be.
(発明が解決しようとする問題点)
本発明は、Cr203− At203固溶体から成る被
覆層の組成及び夾雑成分に着目し、耐摩耗性及び耐ビル
ドアツプ性に優れた鉄粉切り出し装置を提供するもので
ある。(Problems to be Solved by the Invention) The present invention focuses on the composition and contaminant components of the coating layer made of Cr203-At203 solid solution, and provides an iron powder cutting device with excellent wear resistance and build-up resistance. be.
(問題点を解決するための手段)
本発明は、重量比で1:9〜9:1の範囲のCr2O3
−fiJ、203 固溶体を97重量%以上含有し、
かつ金属Crを0.5重量−以下とし、残部が不可避的
不純物からなることを特徴とする表層を鉄粉接触面に有
する鉄粉切出し装置である。(Means for solving the problems) The present invention provides Cr2O3 with a weight ratio in the range of 1:9 to 9:1.
-fiJ, 203 Contains 97% by weight or more of a solid solution,
The present invention is an iron powder cutting device having a surface layer on the iron powder contact surface, in which the metal Cr is 0.5% by weight or less, and the remainder consists of unavoidable impurities.
以下本発明について詳述する。The present invention will be explained in detail below.
一般に、At、o、(融点2045°C)、Cr2O3
(融点2275℃)などは、高融点で金属との反応性°
に乏しく、高硬度で耐摩耗性を有する。Generally, At, o, (melting point 2045°C), Cr2O3
(melting point 2275℃) etc. have a high melting point and are reactive with metals.
It has high hardness and wear resistance.
また、Cr2O3とM2O,が全域で完全固溶体を形成
することに着目して、検討を行ってきた。Further, studies have been conducted focusing on the fact that Cr2O3 and M2O form a complete solid solution over the entire region.
まず第一に母材と被覆層の剥離結合を考え、剥離のない
組成を検討したところ、Cr2O3にM2O3を10〜
90重f%固溶させることで、熱的:二も安定となり、
剥離のない被覆層が形成できることが判明した。First of all, we considered the peel bond between the base material and the coating layer, and investigated the composition without peeling.
By making it a solid solution of 90% by weight, it becomes thermally stable,
It was found that a coating layer without peeling could be formed.
そこで、重量比でl:9〜9:1の範囲のCr 203
− At、 03固溶体からなる被覆層を、鉄粉切出し
装置の鉄粉接触面に種々使用してきたが、各切出し装置
間又は鉄粉接触面の各部位間において、ビルドアップが
発生するものもあれば、全く発生しないものもあった。Therefore, Cr203 with a weight ratio in the range of l:9 to 9:1
- Various coating layers made of At, 03 solid solution have been used on the iron powder contact surfaces of iron powder cutting devices, but in some cases, build-up occurs between each cutting device or between various parts of the iron powder contact surface. In some cases, it did not occur at all.
そこで、このビルドアップメカニズムを鋭意検討してき
た結果、Cr、 O5−AL、O8固溶体中に、金属C
rが0.5%を超えて存在する時にビルドアップが発生
することが判明した。Therefore, as a result of intensive investigation into this build-up mechanism, we found that metal C
It has been found that build-up occurs when r is present in excess of 0.5%.
次に本発明に係る被覆材料の数値限定の根拠とした耐剥
離性試験結果を表1に、ビルドアップ試験結果を表2に
示す。Next, Table 1 shows the results of the peel resistance test and Table 2 shows the results of the build-up test, which were used as the basis for the numerical limitations of the coating material according to the present invention.
耐剥離性試験は、30X50X5crnのSCH22鋳
鋼の最表面に、各種Cr2O3−Al2O2固溶体の被
覆層を形成(溶射)した試料を、1000℃×30分間
加熱後水中に浸漬させることを繰り返し、剥離発生回数
を調査することで、耐剥離性を判定した。In the peeling resistance test, a sample in which a coating layer of various Cr2O3-Al2O2 solid solutions was formed (sprayed) on the outermost surface of SCH22 cast steel of 30 x 50 x 5 crn was repeatedly immersed in water after heating at 1000°C for 30 minutes, and the number of peeling occurrences was determined. Peeling resistance was determined by investigating.
ビルドアップ試験は、耐剥離性試験と同様の手順で作成
した試料の2枚の平板の間に、ビルドアップ原料となる
鉄酸化物粉体をのせて重ね合せ、その上に荷重を加え、
ビルドアップ原料と2枚の平板がこすり合わされるよう
な動きを与え、空気中で1000℃で5時間加熱し、冷
却後被覆層の表面状態を観察してビルドアツプ性を判定
した。In the build-up test, iron oxide powder, which is the build-up raw material, is placed between two flat plates of the sample prepared using the same procedure as the peeling resistance test, and a load is applied on top of the two plates.
The build-up raw material and the two flat plates were rubbed together, heated in air at 1000° C. for 5 hours, and after cooling, the surface condition of the coating layer was observed to determine the build-up property.
本結果かられかるように、Cr2O,−M、O5固溶体
において、N[L3〜5のように固溶体の比率が1=9
〜9:1の範囲では、10回以上の耐用性を示し、耐剥
離性が著しく向上することがわかる。As can be seen from this result, in the Cr2O, -M, O5 solid solution, the ratio of the solid solution is 1 = 9 as in N[L3~5.
It can be seen that in the range of ~9:1, durability is exhibited for 10 times or more, and peeling resistance is significantly improved.
尚、本試験に供した被覆層のCr、 O,−AE203
固溶体以外の組成は、固溶体化されなかったCr、
O8やO20,と不可避的不純物である8102 、
TiO2、Cab。In addition, the coating layer used in this test was Cr, O, -AE203
The composition other than the solid solution is Cr that has not been made into a solid solution,
O8, O20, and the inevitable impurity 8102,
TiO2, Cab.
MyO、Fe2O3等である。MyO, Fe2O3, etc.
また、Cr2O3−O203固溶体の組成が重量比で1
:9〜9:1の範囲で、Cr2O3−AJL203固溶
体が97重量%以上で、かつ金属Cr含有量が0.5重
量−以下だと、ビルドアップ発生が少ないことがわかる
。In addition, the composition of the Cr2O3-O203 solid solution is 1 by weight.
:9 to 9:1, it can be seen that when the Cr2O3-AJL203 solid solution is 97% by weight or more and the metal Cr content is 0.5% by weight or less, the buildup is less likely to occur.
(HIILlo、11,12,15,16.17.19
゜20.21)
その中でも特に金属Cr含有量が0.2重量多以下だと
極めて少なくなり、(醜11 、12 、 l 6.
1’7゜20.21’)、更に金属Cr含有量がo、o
1%以下の場合には、実験上では、ビルドアップの発生
は認められなかった。(HIILlo, 11, 12, 15, 16.17.19
゜20.21) Among them, especially when the metal Cr content is 0.2% by weight or less, it becomes extremely small (Ugly 11, 12, l 6.
1'7°20.21'), and the metal Cr content is o, o
In the case of 1% or less, no buildup was observed in experiments.
尚、Cr203− M2o、固溶体中の金属Crを減少
する技術としては、例えば上記固溶体粉末の製造工程に
おいて酸化処理、酸洗等を行なう方法、溶射時に非還元
性雰囲気を使用してCr2O3の還元を抑制する方法等
がある。Techniques for reducing Cr203-M2o and metallic Cr in the solid solution include, for example, oxidation treatment, pickling, etc. in the manufacturing process of the solid solution powder, and reduction of Cr2O3 using a non-reducing atmosphere during thermal spraying. There are ways to suppress this.
第1図は本発明が対象とする鉄粉切出し装置の一例を示
したものである。FIG. 1 shows an example of an iron powder cutting device to which the present invention is directed.
図中1は鉄粉供給ホッパーで供給ホッパー1の下にはリ
ング固守ガイド2に支持された切出しリング3(複数個
)が設けられ、更にその下には切出しシュート4(切出
しリング3に対応した数)が設けられ、鉄粉は切出しシ
ュート4から所要の工程へ供給される様になっている。1 in the figure is an iron powder supply hopper, and below the supply hopper 1 there are cut-out rings 3 (a plurality of pieces) supported by a ring holding guide 2, and further below that there is a cut-out chute 4 (corresponding to the cut-out ring 3). ), and the iron powder is supplied from the cutting chute 4 to the required process.
本発明は、この種の鉄粉切出し装置において、鉄粉接触
面に上記組成物よりなるセラミック板を当接するか又は
溶射により表層を形成するものである。The present invention is an iron powder cutting device of this kind, in which a ceramic plate made of the above composition is brought into contact with the iron powder contact surface or a surface layer is formed by thermal spraying.
上記組成物よりなる表層を設ける鉄粉接触面としては、
(1)鉄粉供給ホッパー1の内面、(2)切出しリング
3の内面、(3)切出しシュート4の内面から選ばれた
1面又は2面以上を、所望に応じて選択することができ
る。The iron powder contact surface on which the surface layer made of the above composition is provided is as follows:
One or more surfaces selected from (1) the inner surface of the iron powder supply hopper 1, (2) the inner surface of the cutting ring 3, and (3) the inner surface of the cutting chute 4 can be selected as desired.
(実施例) ステンレスの表面に、表2に示すNa1l、l”。(Example) Na1l,l'' shown in Table 2 was applied to the surface of the stainless steel.
20及び階14の被覆層を溶射により形成し、表面平滑
度が100μm以下になるように研摩し、鉄粉切り出し
装置に適用した。尚、従来品としてステンレス製鉄粉切
り出し装置を用意した。The coating layers 20 and 14 were formed by thermal spraying, polished to a surface smoothness of 100 μm or less, and applied to an iron powder cutting device. In addition, a stainless steel iron powder cutting device was prepared as a conventional product.
上記5種類の鉄粉切り出し装置を、使捨てカイロの製造
設備で6力月間(1日16時間操業)使用した結果を表
3に示す。Table 3 shows the results of using the five types of iron powder cutting devices described above in a disposable warmer manufacturing facility for six months (operating 16 hours a day).
本発明を適用した部位は、供給ホラ、<−1、切り出し
リング3、切り出しシュート4である。The parts to which the present invention is applied are the supply hole, <-1, the cutting ring 3, and the cutting chute 4.
表3かられかるように6力月間使用しても、本発明品で
は、ビルドアップの発生、表面の摩耗は認められなかっ
た。As shown in Table 3, even after 6 months of use, no build-up or surface wear was observed in the product of the present invention.
(発明の効果)
上記の実施例に示すごとく、本発明による耐摩耗性・耐
ビルドアツプ性を有する被覆層は、長時間使用に際して
も、摩耗もビルドアップの発生も認められず、長期間安
定した生産に貢献するものである。(Effects of the Invention) As shown in the above examples, the coating layer having wear resistance and build-up resistance according to the present invention shows no wear or build-up even when used for a long time, and is stable for a long time. It contributes to production.
第1図は本発明の鉄粉切出し装置の一例の説明図である
。
代理人 弁理士 茶野木 立 失
策1図
て−−一門■−−−フFIG. 1 is an explanatory diagram of an example of an iron powder cutting device of the present invention. Agent Patent Attorney Tate Chanogi Mistake 1 - Ichimon ■---F
Claims (1)
_2O_3固溶体を97重量%以上含有し、かつ金属C
rを0.5重量%以下とし、残部が不可避的不純物から
なる表層を鉄粉接触面に有することを特徴とする鉄粉切
り出し装置。Cr_2O_3-Al in the range of 1:9 to 9:1 by weight
Contains 97% by weight or more of _2O_3 solid solution and contains metal C
An iron powder cutting device characterized in that the iron powder contact surface has a surface layer in which r is 0.5% by weight or less and the remainder consists of unavoidable impurities.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62068920A JPS63235446A (en) | 1987-03-25 | 1987-03-25 | Iron powder discharging apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62068920A JPS63235446A (en) | 1987-03-25 | 1987-03-25 | Iron powder discharging apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS63235446A true JPS63235446A (en) | 1988-09-30 |
Family
ID=13387568
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62068920A Pending JPS63235446A (en) | 1987-03-25 | 1987-03-25 | Iron powder discharging apparatus |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS63235446A (en) |
-
1987
- 1987-03-25 JP JP62068920A patent/JPS63235446A/en active Pending
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US6270914B1 (en) | Surface-hardened titanium material, surface hardening method of titanium material, watchcase decoration article, and decoration article | |
CN1124786A (en) | Composite coating material with nickel base alloy and chromium carbide hard surface and process | |
JPS6117912B2 (en) | ||
JPS63235446A (en) | Iron powder discharging apparatus | |
JPH03272959A (en) | Carrying roll excellent in build-up resistance and high temperature wear resistance | |
JPS6347379A (en) | In-furnace roll for heat treating furnace and its production | |
JPH01502263A (en) | Mold for manufacturing glass containers and method for manufacturing glass containers | |
JPH0757904B2 (en) | Heat treatment furnace roll and manufacturing method thereof | |
JPS6123755A (en) | Roll for heat treating furnace | |
JPS602661A (en) | Roll for heat treatment furnace | |
JPH03215622A (en) | Walking beam | |
JPS6116321B2 (en) | ||
JPH0383824A (en) | Complex mold for molding of optical member | |
JPH05445B2 (en) | ||
JPS6331531B2 (en) | ||
JPS63487A (en) | Heat resistance member having oxide film on coating of chromium-contained thermal spraying metal | |
JPS61174318A (en) | Roll for heat treating furnace | |
JPH01118355A (en) | Coated die and core for aluminum die casting | |
JPH04315A (en) | Conveyance roll for high temperature use excellent in build up resistance, peeling resistance, and wear resistance | |
JP2960262B2 (en) | Roll for heat treatment furnace | |
US3706539A (en) | Tantalum clad niobium | |
JPS6254016A (en) | Roll for heat treatment furnace | |
JPS5970712A (en) | Hearth roll for continuous annealing furnace with superior wear resistance and build-up resistance | |
JPH07173592A (en) | Pot roll for galvanizing | |
Block et al. | Use of coatings to protect steels against lead corrosion at high temperatures |