JPS60197370A - Nozzle for sand blasting - Google Patents
Nozzle for sand blastingInfo
- Publication number
- JPS60197370A JPS60197370A JP4992984A JP4992984A JPS60197370A JP S60197370 A JPS60197370 A JP S60197370A JP 4992984 A JP4992984 A JP 4992984A JP 4992984 A JP4992984 A JP 4992984A JP S60197370 A JPS60197370 A JP S60197370A
- Authority
- JP
- Japan
- Prior art keywords
- nozzle
- peripheral surface
- inner peripheral
- abrasionproof
- air flow
- 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
Abstract
Description
【発明の詳細な説明】
〔発明の利用分野〕
この発明は、サンドブラストに使用されるノズルに関す
る。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] This invention relates to a nozzle used for sandblasting.
す／ドプラスティングは、空気を高圧に刃口圧して、砂
、金属粒子等の研掃材と一緒にサンドブラスト用ノズル
に送給し、ノズルがら砂や金属粒子などの研掃材を空気
で吹き付けて物体表面の塗装金利したり、錆を落とした
シ、研摩したシして、メッキの前工程や塗装の前処理と
して一般に利用されている。従って、サンドブラスト用
ノズルのとになシ、サンドブラスト用ノズル内表面には
顕著な摩耗が生じる。そこで第１図に示すように、サン
ドブラスト用ノズルｌは高硬度鋼、タングステンカーバ
イド、ボロンカーバイド等の耐摩耗性の高い材料にて形
成されていた。しかし、サイドブラスティングに使用さ
れている従来のサンドブラスト用ノズルは、一般に研掃
材として利用される鋼球、サンド、ガラスピーズ等との
摩擦接触によシノズル内周面ＩＡが摩耗するか、もしく
は簡単に割れが生じ耐久性に劣ることが問題となってい
た。In S/D blasting, air is put under high pressure at the blade mouth and sent to a sandblasting nozzle together with abrasive materials such as sand and metal particles, and the abrasive materials such as sand and metal particles are sprayed with air through the nozzle. It is generally used as a pre-plating process or as a pre-treatment for painting by painting the surface of an object, removing rust, or polishing it. Therefore, significant wear occurs on the inner surface of the sandblasting nozzle. Therefore, as shown in FIG. 1, the sandblasting nozzle l is made of a highly wear-resistant material such as high hardness steel, tungsten carbide, and boron carbide. However, with conventional sandblasting nozzles used for side blasting, the inner peripheral surface IA of the sandblasting is worn out due to frictional contact with steel balls, sand, glass beads, etc., which are generally used as abrasive materials, or The problem was that it cracked easily and had poor durability.
さらにサンドブラスト用ノズルに用いられる材料はいず
れも硬度が高く、極めて加工性が悪いため加工作業に長
時間を要し、製造原価は高価であるわシに寿命は短いも
のでおった。Furthermore, the materials used for sandblasting nozzles all have high hardness and extremely poor workability, requiring long processing times, high manufacturing costs, and short lifespans.
この発明はこのｆうな従来の間２題点を解消すべく創案
されたもので、高いゝ耐久性を有するサンドブラスト用
ノズルを提供することを目的とする。This invention was devised to solve these two problems in the prior art, and aims to provide a sandblasting nozzle with high durability.
この発明に係るサンドブラスト用ノズルは、ノズル内に
形成される流路の少なくとも最小径部内周面に耐摩耗性
セラミックのコーティングがなされていることを特徴と
するものである。The sandblasting nozzle according to the present invention is characterized in that the inner peripheral surface of at least the smallest diameter portion of the flow path formed in the nozzle is coated with a wear-resistant ceramic.
上記構成によると、噴射時にノズルの流路の最小径部内
周面と空気流に含まれる研掃材との間ではげしい摩擦が
生じても該部分を耐摩耗性セラミックで形成したため、
上記作用による核部の摩耗を最小限にすることができ、
ノズルの寿命を延ばすことができる。According to the above configuration, even if severe friction occurs between the inner circumferential surface of the minimum diameter part of the nozzle flow path and the abrasive material contained in the air flow during injection, since this part is made of wear-resistant ceramic,
Wear of the core due to the above action can be minimized,
The life of the nozzle can be extended.
次にこの発明に係るサンドブラスト用ノズルの一実施例
を図面に基づいて説明する。Next, one embodiment of the sandblasting nozzle according to the present invention will be described based on the drawings.
第２図において、サンドブラスト用ノズルのノズル本体
２の空気流路３の内周面には、例えば化学蒸着法あるい
は物理蒸着法によって耐摩耗性セラミックのコーティン
グ層４が形成されておシ、従来のサンドブラストノズル
内周面よりも硬度が高められている。ノズル本体２の空
気流路内周面に＝−ティングする耐摩耗性セラミックと
してはＴｔｃ、 Ｔｔ （ＣＮ）、ＴｉＮ５ ＡＡｚＯ
ｓ、ＳｉＣもしくはこれらの複屑物などがあシ、それら
の硬度は、ヌープ硬度２６００〜３５００程度に達する
。従って従来よりも著しく耐摩耗性が高まシ、例えばＴ
ｉＣ”、（例にとると寿命は１０倍程度に延長される。In FIG. 2, a wear-resistant ceramic coating layer 4 is formed on the inner peripheral surface of the air flow path 3 of the nozzle body 2 of the sandblasting nozzle by, for example, chemical vapor deposition or physical vapor deposition. The hardness is higher than the inner circumferential surface of the sandblasting nozzle. Wear-resistant ceramics to be applied to the inner peripheral surface of the air flow path of the nozzle body 2 include Ttc, Tt (CN), TiN5 AAzO.
S, SiC, or composite scraps thereof, etc., have a hardness of about 2,600 to 3,500 on the Knoop hardness. Therefore, the wear resistance is significantly higher than before, for example, T
iC" (for example, the lifespan is extended by about 10 times).
図面においては耐摩耗性セラミックのコーティング層４
の厚さを誇張して図示しているが、実際には１μｍ〜数
βｍという極めて薄い厚さにコーティングするだけで充
分な耐摩耗性を発揮する。In the drawing, a wear-resistant ceramic coating layer 4 is shown.
Although the thickness is exaggerated in the illustration, in reality, sufficient abrasion resistance can be achieved by coating the material to an extremely thin thickness of 1 μm to several βm.
従ってノズル本体２の母材を精密に形成しておけば、耐
摩耗性セラミックのコーテイング後にも高い精度を維持
し得る。また空気流路３の内周面を完全にセラミック４
でコーティングすれは、母材は必ずしも超硬度鋼、タン
グステンカーバイド、ボロンカーバイド等の高価なもの
である必要はなく、より安価かつ加工性の良好な母材を
使用し得る。Therefore, if the base material of the nozzle body 2 is precisely formed, high precision can be maintained even after coating with wear-resistant ceramic. In addition, the inner peripheral surface of the air flow path 3 is completely covered with ceramic 4.
When coating with , the base material does not necessarily have to be an expensive material such as ultra-hard steel, tungsten carbide, boron carbide, etc., and a base material that is cheaper and has better workability can be used.
前記実施例ではノズル本体２の空気流路内周面全体にセ
ラミック層４を形成したものを示したがノズル本体の中
で最も流速の速い部分は口径の小さいところで必シ、こ
こで最も摩擦が激しいので、ノズル本体３を例えば超硬
度鋼によって形成するとともに、空気流路の最小径部だ
けをセラミックコーティングしても、耐久性向上の効果
がある。In the above embodiment, the ceramic layer 4 was formed on the entire inner circumferential surface of the air flow path of the nozzle body 2, but the part of the nozzle body where the flow velocity is highest is necessarily the part with the smallest diameter, and this is where the most friction occurs. Therefore, it is effective to improve durability by forming the nozzle body 3 from, for example, ultra-hard steel and coating only the smallest diameter portion of the air flow path with ceramic.
前述のとおシ、この発明に係るサンドブラスト用ノズル
は少なくとも空気流路の最小径部内周面を耐摩耗性セラ
ミックでコーティングしたので、耐久性に優れていると
いう効果を有する。As mentioned above, since the sandblasting nozzle according to the present invention has at least the inner circumferential surface of the smallest diameter part of the air flow path coated with wear-resistant ceramic, it has the effect of being excellent in durability.
第１図は従来のサイドブラスト用ノズルの縦断面図、第
２図はこの発明に係るサイドプラスト用・ ノズルの−
￥施例を示す縦断面図でおる。
ム・・・ノズル本体、３・・・空気流路、４・・・耐摩
耗セラミックのフーティング層。
代理人 鵜 沼 辰 之
（はか１名）
第１図Fig. 1 is a vertical cross-sectional view of a conventional side blasting nozzle, and Fig. 2 is a longitudinal sectional view of a side blasting nozzle according to the present invention.
This is a vertical cross-sectional view showing an example. M... Nozzle body, 3... Air flow path, 4... Wear-resistant ceramic footing layer. Representative Tatsuyuki Unuma (1 person) Figure 1
Claims (1)
セラミックのコーティングがなされていることｔ−特徴
とするサンドブラスト用ノズル。(1) A sandblasting nozzle characterized in that at least the inner peripheral surface of the smallest diameter portion of the flow path is coated with a wear-resistant ceramic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4992984A JPS60197370A (en) | 1984-03-15 | 1984-03-15 | Nozzle for sand blasting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4992984A JPS60197370A (en) | 1984-03-15 | 1984-03-15 | Nozzle for sand blasting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60197370A true JPS60197370A (en) | 1985-10-05 |
Family
ID=12844702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4992984A Pending JPS60197370A (en) | 1984-03-15 | 1984-03-15 | Nozzle for sand blasting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60197370A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62502957A (en) * | 1985-04-25 | 1987-11-26 | ザ ブリテイツシユ ハイドロメカニクス リサ−チ アソシエイシヨン | polishing fluid flow |
| US4817342A (en) * | 1987-07-15 | 1989-04-04 | Whitemetal Inc. | Water/abrasive propulsion chamber |
| JPH0639721A (en) * | 1992-07-08 | 1994-02-15 | Kawasaki Heavy Ind Ltd | Abrasive water-jet nozzle and its manufacture |
| JP2008006341A (en) * | 2006-06-27 | 2008-01-17 | Matsushita Electric Works Ltd | Method for forming insulating film |
-
1984
- 1984-03-15 JP JP4992984A patent/JPS60197370A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62502957A (en) * | 1985-04-25 | 1987-11-26 | ザ ブリテイツシユ ハイドロメカニクス リサ−チ アソシエイシヨン | polishing fluid flow |
| US4817342A (en) * | 1987-07-15 | 1989-04-04 | Whitemetal Inc. | Water/abrasive propulsion chamber |
| JPH0639721A (en) * | 1992-07-08 | 1994-02-15 | Kawasaki Heavy Ind Ltd | Abrasive water-jet nozzle and its manufacture |
| JP2008006341A (en) * | 2006-06-27 | 2008-01-17 | Matsushita Electric Works Ltd | Method for forming insulating film |
| JP4661703B2 (en) * | 2006-06-27 | 2011-03-30 | パナソニック電工株式会社 | Insulating film formation method |
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