JP3465808B2 - Projectile material - Google Patents
Projectile materialInfo
- Publication number
- JP3465808B2 JP3465808B2 JP17598396A JP17598396A JP3465808B2 JP 3465808 B2 JP3465808 B2 JP 3465808B2 JP 17598396 A JP17598396 A JP 17598396A JP 17598396 A JP17598396 A JP 17598396A JP 3465808 B2 JP3465808 B2 JP 3465808B2
- Authority
- JP
- Japan
- Prior art keywords
- present
- particles
- die
- shot
- resistance
- 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.)
- Ceased
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- Other Surface Treatments For Metallic Materials (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は，機械部品等の耐摩
耗性，耐酸化性，靱性，耐焼き付き性，成形性の向上の
ためのブラスト処理に用いる投射材に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blast material used for blasting for improving wear resistance, oxidation resistance, toughness, seizure resistance, and moldability of machine parts and the like.
【０００２】[0002]
【従来の技術】従来，機械部品等の被処理品に耐食性，
防錆性を付与するため，ショットブラスト用の投射材
に，亜鉛合金等の軟質金属層を形成した防錆用投射材を
被処理品に投射し，もって被処理品をブラスト処理によ
りメッキするメカニカルプレ−ティング用材料及びその
方法は公知である（例えば，特公昭５９年２５０３２
号，特開昭６１年３８８７０号）。このメカニカルプレ
−ティングに用いられる防錆用投射材は，鉄または鉄合
金粒子に亜鉛，銅，アルミニウムあるいはこれらの合金
等の軟質の金属材料を被覆してなるものである。2. Description of the Related Art Conventionally, corrosion resistance is applied to processed objects such as machine parts,
In order to provide rustproofness, a shot blasting shot material is blasted with a rust-preventive shot material having a soft metal layer such as a zinc alloy onto the object to be treated, and thus the object to be treated is plated by blasting. The material for plating and its method are known (for example, Japanese Patent Publication No.
No., JP-A-61, 38870). The rust-preventive shot material used in this mechanical plating is made by coating iron or iron alloy particles with a soft metal material such as zinc, copper, aluminum or alloys thereof.
【０００３】[0003]
【従来の技術の問題点】しかし，従来のメカニカルプレ
−ティングは，上記の軟質材料を被覆する場合には用い
ることが可能であるが硬質材料を被覆することは前提と
していない。もともと，メカニカルプレ−ティングは，
電気メッキ，無電解メッキ等のウエットプロセスに対し
てドライプロセスで，鋼板，型鋼，ボルト等の機械素材
若しくは部品に耐食性，防錆性ある軟質材料を被覆する
ことを目的としていたからである。また，被処理品も材
料に限定があった。これは，メカニカルプレ−ティング
は機械的密着を主とするため，硬質の被処理品では機械
的密着の前提となる適切な表面の荒れ（アンカ−効果）
が得られず，被処理品との密着性が十分ではなくなるた
めである。よって，従来のメカニカルプレ−ティングは
用途が限定されていた。ところで，多様化する市場のニ
−ズに対応するため，現在特定の機能を持った多くの特
殊材料が検討されている。たとえば，耐摩耗性，耐酸化
性，靱性，耐焼き付き性，成形性の向上のため，転造用
ダイス，鍛造用金型，ダイキャスト用金型等の金型に浸
炭，窒化，ホウ化等の表面処理をすることは広く用いら
れている。また，材料の表面に残留圧縮応力を付与して
疲労寿命の向上を図るため，鉄系粒子の投射材を投射す
るピ−ニングは公知である。しかし，これらの処理はそ
れぞれ行われており，一度の処理による生産効率アップ
には限界がある。また，耐摩耗性，耐酸化性，靱性，耐
焼き付き性，成形性の向上又は疲労寿命の向上を現状よ
りさらに高める処理方法が求められ種々検討されている
が，これらの性質を飛躍的に向上する処理法は実現され
ていない。However, the conventional mechanical plating can be used when coating the above-mentioned soft material, but is not premised on coating the hard material. Originally, mechanical plating was
This was because the purpose was to coat a mechanical material such as steel plate, shaped steel, bolts or parts with a soft material having corrosion resistance and rust prevention by a dry process as opposed to a wet process such as electroplating or electroless plating. The material to be processed was also limited. This is because mechanical plating mainly involves mechanical contact, so that for hard workpieces, appropriate surface roughness (anchor effect) is a prerequisite for mechanical contact.
Is not obtained, and the adhesion to the product to be treated is not sufficient. Therefore, conventional mechanical plating has limited applications. By the way, in order to respond to the needs of diversifying markets, many special materials having specific functions are currently being studied. For example, in order to improve wear resistance, oxidation resistance, toughness, seizure resistance, and formability, carburizing, nitriding, boring, etc. are applied to dies such as rolling dies, forging dies, and die casting dies. Surface treatment is widely used. Further, in order to impart a residual compressive stress to the surface of the material to improve the fatigue life, pinning for projecting iron-based particle projection material is known. However, each of these processes is performed, and there is a limit to improving the production efficiency with a single process. In addition, various treatment methods are being sought after to improve wear resistance, oxidation resistance, toughness, seizure resistance, formability or fatigue life even further than the current ones, but various improvements have been made to these properties. The processing method to do is not realized.
【０００４】[0004]
【目的】本発明は上記に鑑みて成されたもので，耐摩耗
性，耐酸化性，靱性，耐焼き付き性，成形性が要求され
る転造用ダイス，鍛造用金型，ダイキャスト用金型等に
良好な疲労寿命を一度の処理で付与するブラスト処理に
用いる投射材を提供すること目的とするものである。[Object] The present invention has been made in view of the above, and is a rolling die, a forging die, and a die casting die that require wear resistance, oxidation resistance, toughness, seizure resistance, and formability. It is an object of the present invention to provide a shot material used for a blasting treatment that imparts a good fatigue life to a mold or the like in a single treatment.
【０００５】[0005]
【問題解決のための手段】上記の目的を達成するために
本発明における投射材は，粒子硬度が７００〜２０００
ＨＶ，粒子径が３０〜２５０ミクロン，真比重が１１〜
２０の粒子の表面に，金属に対して耐摩耗性，耐酸化
性，靱性の少なくとも１つの性質をよくする材料からな
るコ−ティング膜であって、該コ−ティング膜が，Ｍ
ｏ，Ｖ，Ｃｒ，Ｎｉ，Ｃｏ，Ni+Cr+Moのいずれかの成分
を含むものを形成したことを特徴とするものである。In order to achieve the above object, the projection material of the present invention has a particle hardness of 700-2000.
HV, particle size 30-250 microns, true specific gravity 11-
Wear resistance and oxidation resistance against the metal on the surface of 20 particles
Made of a material that improves at least one of the properties
A coating film, wherein the coating film is M
Any component of o, V, Cr, Ni, Co, Ni + Cr + Mo
It is characterized in that a material including is formed .
【０００６】[0006]
【作用】本発明によれば，高比重かつ高硬度の微細粒子
にコ−ティング膜を形成させているため，ブラスト処理
することにより硬質の被処理品では機械的密着の前提と
なる適切な表面の荒れ（アンカ−効果）が得られるた
め，コ−ティング材と被処理品との密着性が得られる。
また，いわゆる微視的塑性変形が生じ，この変形によ
り，高比重かつ高硬度の微細粒子にコ−ティングされ
た，金属に対して耐摩耗性，耐酸化性，靱性，耐焼き付
き性，成形性を付与する材料が，被処理品の表面に容易
に，かつ，強固に冨化される。 さらに，微視的塑性変
形により残留圧縮応力が金型の表面に付与される。According to the present invention, since the coating film is formed on the fine particles having a high specific gravity and a high hardness, the blast treatment is applied to the hard surface of the object to be mechanically adhered properly. Since the roughness (anchor effect) is obtained, the adhesion between the coating material and the object to be processed can be obtained.
In addition, so-called microscopic plastic deformation occurs, and due to this deformation, wear resistance, oxidation resistance, toughness, seizure resistance, and formability of metal coated on fine particles with high specific gravity and high hardness are formed. The material that imparts the densification is easily and firmly enriched on the surface of the article to be treated. Furthermore, residual compressive stress is applied to the mold surface by microscopic plastic deformation.
【０００７】本発明において，核となる粒子の硬度が７
００〜２０００ＨＶとしたのは，高硬度の金型を処理す
るためには，粒子自体が高硬度である必要があるからで
ある。この粒子としては，ジルコニア，アルミナ，鋼，
ハイス，超硬，サ−メット等が好適である。In the present invention, the hardness of the core particles is 7
The reason why it is set to 00 to 2000 HV is that the particles themselves need to have high hardness in order to process a mold having high hardness. These particles include zirconia, alumina, steel,
High-speed steel, carbide, cermet, etc. are suitable.
【０００８】本発明において，粒子径が３０〜２５０ミ
クロンの粒子としたのは，あまり大きな粒子を使うと被
処理品の表面粗さが大きくなり，転写性を要求する金型
には適さないからである。なお，粒子の形状として，最
も好適なのは球形であるが，そのほか通常投射材として
用いられる円筒形，六面体，グリッド形など実質的な大
きさがこの大きさに入るものならばよい。In the present invention, the particles having a particle diameter of 30 to 250 microns are used because if the particles are too large, the surface roughness of the article to be treated becomes large and it is not suitable for a mold requiring transferability. Is. The most preferable particle shape is a spherical shape, but other shapes such as a cylindrical shape, a hexahedron, and a grid shape, which are usually used as a projection material, can be included in this size.
【０００９】本発明において，金型に使用される鋼に対
する合金元素として，Ｃｒ，Ｎｉは耐酸化性を向上する
ことは公知である。また，鋼に対する合金元素として，
Ｃｒ，Ｖ等は耐摩耗性を向上することは公知である。高
温強さを上げるためには，Ｃｒ，Ｍｏ，Ｗ，Ｖを添加す
ることが公知である。また，本発明において靱性の向上
とは，たとえば金属材料の表面に，靭性の向上するＣ
ｏ，Ｎｉ，Ｍｏを添加することにより表面のマイクロク
ラックの発生を防止し寿命が向上することをいう。粒子
のコ−ティング材料としてはこれらの１種または２種類
以上を含む材料をコ−ティングすればよい。In the present invention, it is known that Cr and Ni as the alloying elements for the steel used in the mold improve the oxidation resistance. In addition, as an alloying element for steel,
It is known that Cr, V, etc. improve wear resistance. It is known to add Cr, Mo, W, V to increase the high temperature strength. Further, in the present invention, the improvement of toughness means, for example, on the surface of a metal material, C which improves the toughness.
It means that the addition of o, Ni and Mo prevents the generation of microcracks on the surface and improves the life. As a particle coating material, a material containing one or more of these may be coated.
【００１０】本発明において，溶湯金属とは，鋳鉄，鋳
鋼，アルミニウム合金，マグネシウム合金等の溶融金属
をいう。したがって，鋳造用，ダイキャスト用若しくは
溶湯鍛造用の溶湯金属が代表的な材料である。In the present invention, the molten metal means a molten metal such as cast iron, cast steel, aluminum alloy and magnesium alloy. Therefore, molten metal for casting, die-casting, or forging molten metal is a typical material.
【００１１】本発明において，粒子の真比重が１１〜２
０としたのは，高比重の粒子であれば，ブラスト時の速
度が低速度でも衝突エネルギが得られ，省エネルギにつ
ながるという効果がある。これに該当するのは，超硬材
料である。In the present invention, the true specific gravity of particles is 11 to 2
The reason why 0 is set is that, if the particles have a high specific gravity, collision energy can be obtained even if the velocity at the time of blasting is low, which leads to energy saving. This applies to super hard materials.
【００１２】本発明において，コ−ティング膜が機械的
作用により形成されることを特徴としたのは，たとえば
メカニカルプレ−ティングによりメッキする場合は，コ
−ティング膜が厚く得られ，この投射材を投射したとき
に，被処理品にコ−ティング材料が冨化されやすくなる
からである。The present invention is characterized in that the coating film is formed by a mechanical action. For example, when plating is performed by mechanical plating, the coating film is thick and the projection material This is because the coating material is likely to become rich in the material to be processed when is projected.
【００１３】本発明において，投射材によるブラスト処
理とは，ディスケ−リング等に用いる通常のブラスト処
理およびピ−ニング処理を含んでいる。また，本発明に
おいて，被処理品としては，プレス，鍛造，ダイキャス
ト，プラスチック成形，ガラス成形，ゴム成形，粉末冶
金に用いる金型が特に好適であるが，これに限定される
ものではない。In the present invention, the blasting treatment with the shot material includes the usual blasting treatment and pinning treatment used for the scaling and the like. Further, in the present invention, as the object to be processed, a die used for pressing, forging, die casting, plastic molding, glass molding, rubber molding, powder metallurgy is particularly preferable, but the present invention is not limited to this.
【００１４】[0014]
【実施例１】以下本発明の実施の形態を図面に基づいて
詳細に説明する。コ−ティング材としてのＭｏの粉末と
高硬度の投射材の核となる超硬合金粒子をアトライタで
混合して機械的にコ−ティング層を付加することにより
本発明にかかる投射材を得た。続いて，ダイキャスト用
金型（ＳＫＤ６１）に対してイオン窒化により，金型表
面を１２００ＨＶの高硬度にした後，硬度の低い５５０
ＨＶで粒径３００ミクロンの通常の鋼ショットと，硬度
が高い１４００ＨＶのＷＣ−Ｃｏを主成分とする１００
ミクロンの上記本発明にかかる投射材によりピ−ニング
処理した。この結果，前者では全く表面が荒れなかった
のにたいして，後者では表面が梨地肌になった。これ
は，高硬度の投射材による投射により，金型表面が微視
的に塑性変形したことを示している。したがって，金型
を処理するためには，粒子自体が高硬度であると効果が
あることが確認できた。さらに，この処理をした金型を
用いてアルミニウムＡＤＣ１０のダイカストをしたとこ
ろ，金型寿命が従来の４．１倍になった。Embodiment 1 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. A shot material according to the present invention was obtained by mechanically adding a coating layer by mixing Mo powder as a coating material and cemented carbide particles serving as nuclei of a high hardness shot material with an attritor. . Subsequently, the die surface is made to have a high hardness of 1200 HV by ion nitriding with respect to the die casting mold (SKD61), and then the hardness of 550 is lowered.
Normal steel shot with a grain size of 300 microns in HV and 100 with WC-Co with a high hardness of 1400 HV as the main component
The blasting material of the present invention having a size of microns was subjected to a pinning treatment. As a result, the former had no rough surface, whereas the latter had a matte surface. This indicates that the surface of the mold was plastically deformed microscopically by the projection with the high hardness projection material. Therefore, in order to process the mold, it has been confirmed that it is effective if the particles themselves have high hardness. Furthermore, when die casting of the aluminum ADC 10 was performed using the die thus treated, the die life was 4.1 times that of the conventional die.
【００１５】[0015]
【実施例２】Ｃｒを主成分とする板材にショットブラス
ト機より，５分間，連続的に高硬度の投射材の核となる
ジルコニア粒子（硬度１３５０ＨＶ，真比重６．１，粒
子径１００ミクロン）を投射することにより本発明にか
かる投射材が得られた。さらに，この投射材を転造用金
型ＳＫＤ１１に投射しピ−ニング加工し，ＳＣＭのボル
トの転造をしたところ，金型寿命が従来の熱処理品のみ
に比べ約２．６倍になった。[Example 2] Zirconia particles (hardness 1350 HV, true specific gravity 6.1, particle diameter 100 micron) that become cores of shot material having high hardness continuously for 5 minutes on a plate material containing Cr as a main component by a shot blasting machine The projection material according to the present invention was obtained by projecting. Furthermore, when this shot material was projected onto the rolling die SKD11 and subjected to pinning to roll the SCM bolts, the die life was approximately 2.6 times longer than that of the conventional heat-treated product. .
【００１６】[0016]
【実施例３】続いて，本発明に係る投射材の最適の処理
条件を確認するため，投射材の比重，硬さ及び平均粒
径，被処理品の材質及び硬度，コ−ティング膜材料を変
えて付着性，寿命，成形性を実験した結果を表１に示
す。なお，投射速度は比較例では７５ｍ／ｓｅｃ，本発
明の実施例では１０〜５０ｍ／ｓｅｃとし，この範囲で
良好な結果が得られた。[Third Embodiment] Next, in order to confirm the optimum processing conditions for the shot material according to the present invention, the specific gravity, hardness and average particle diameter of the shot material, the material and hardness of the article to be processed, and the coating film material were selected. Table 1 shows the results of experiments in which adhesion, life and formability were changed. The projection speed was set to 75 m / sec in the comparative example and 10 to 50 m / sec in the example of the present invention, and good results were obtained in this range.
【００１７】[0017]
【表１】 [Table 1]
【００１８】また，投射材特性を表２に示す。The characteristics of the shot material are shown in Table 2.
【表２】 [Table 2]
【００１９】さらに，コ−ティング材の元素成分と付加
機能の関係を表３に示す。Further, Table 3 shows the relationship between the elemental composition of the coating material and the additional function.
【表３】 [Table 3]
【００２０】なお，実施例では，機械的作用によりコ−
ティング層を付加したが，コ−ティング層の形成は機械
的作用に限らず，真空蒸着やイオンプレ−ティングなど
の物理的蒸着，プラズマＣＶＤや光ＣＶＤなどの化学的
蒸着，さらには，電気メッキや無電解メッキなどの液相
法により，これらの金属の層を形成させてもよい。In the embodiment, the mechanical action causes
Although a coating layer was added, the formation of the coating layer is not limited to mechanical action, but physical vapor deposition such as vacuum vapor deposition or ion plating, chemical vapor deposition such as plasma CVD or photo CVD, and electroplating or The layers of these metals may be formed by a liquid phase method such as electroless plating.
【００２１】[0021]
【発明の効果】本発明は以上の説明から明らかなよう
に，被処理品の耐摩耗性及び耐酸化性や高温での靭性を
大幅に向上させることができる効果がある。これらの金
属を金型の表面に冨化した場合には，金型の耐摩耗性，
耐酸化性，靱性，耐焼き付き性が良くなり，金型の寿命
が長くなり，かつ，成形性が向上するという効果を生ず
る。さらに，ブラストによる残留圧縮応力の付与により
疲労寿命が増大する。これらの処理が一度に簡単に処理
でき，本発明が業界に与える影響は著大である。As is apparent from the above description, the present invention has the effect of significantly improving the wear resistance and oxidation resistance of the object to be treated and the toughness at high temperature. When these metals are applied to the surface of the mold, the wear resistance of the mold,
Oxidation resistance, toughness, and seizure resistance are improved, the life of the mold is extended, and the formability is improved. Furthermore, the fatigue life is increased by applying residual compressive stress by blasting. These processes can be easily processed at one time, and the effect of the present invention on the industry is significant.
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) B24C 11/00 ─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. 7 , DB name) B24C 11/00
Claims (2)
径が３０〜２５０ミクロン，真比重が１１〜２０の粒子
の表面に，金属に対して耐摩耗性，耐酸化性，靱性の少
なくとも１つの性質をよくする材料からなるコ−ティン
グ膜であって、該コ−ティング膜が，Ｍｏ，Ｖ，Ｃｒ，
Ｎｉ，Ｃｏ，Ni+Cr+Moのいずれかの成分を含むものを形
成したことを特徴とする投射材。1. A surface of particles having a particle hardness of 700 to 2000 HV, a particle diameter of 30 to 250 microns, and a true specific gravity of 11 to 20 has at least one property of abrasion resistance, oxidation resistance, and toughness against metal. And a coating film made of a material that improves the
A shot material formed by containing a component of any one of Ni, Co, and Ni + Cr + Mo.
り形成されることを特徴とする請求項１に記載の投射
材。2. The projection material according to claim 1, wherein the coating film is formed by a mechanical action.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17598396A JP3465808B2 (en) | 1996-06-14 | 1996-06-14 | Projectile material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17598396A JP3465808B2 (en) | 1996-06-14 | 1996-06-14 | Projectile material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH106223A JPH106223A (en) | 1998-01-13 |
| JP3465808B2 true JP3465808B2 (en) | 2003-11-10 |
Family
ID=16005654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17598396A Ceased JP3465808B2 (en) | 1996-06-14 | 1996-06-14 | Projectile material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3465808B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5077453B2 (en) * | 2011-02-09 | 2012-11-21 | 日本精工株式会社 | Bearing for center bearing |
| JP2019171512A (en) * | 2018-03-28 | 2019-10-10 | トヨタ自動車東日本株式会社 | Slide member and method for manufacture thereof |
| JP6823303B2 (en) * | 2018-04-05 | 2021-02-03 | 株式会社不二Ｗｐｃ | Surface modification method of the object to be treated and production method of the treated product |
-
1996
- 1996-06-14 JP JP17598396A patent/JP3465808B2/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| JPH106223A (en) | 1998-01-13 |
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| RVOP | Cancellation by post-grant opposition |