JP2687150B2 - Disc brake rotor manufacturing method - Google Patents
Disc brake rotor manufacturing methodInfo
- Publication number
- JP2687150B2 JP2687150B2 JP63266507A JP26650788A JP2687150B2 JP 2687150 B2 JP2687150 B2 JP 2687150B2 JP 63266507 A JP63266507 A JP 63266507A JP 26650788 A JP26650788 A JP 26650788A JP 2687150 B2 JP2687150 B2 JP 2687150B2
- Authority
- JP
- Japan
- Prior art keywords
- disc brake
- brake rotor
- base material
- alloy
- stainless steel
- 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 - Lifetime
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 5
- 239000000463 material Substances 0.000 claims description 16
- 239000011248 coating agent Substances 0.000 claims description 12
- 238000000576 coating method Methods 0.000 claims description 12
- 230000007797 corrosion Effects 0.000 claims description 12
- 238000005260 corrosion Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 10
- 229910045601 alloy Inorganic materials 0.000 claims description 9
- 239000000956 alloy Substances 0.000 claims description 9
- 239000010935 stainless steel Substances 0.000 claims description 9
- 229910001220 stainless steel Inorganic materials 0.000 claims description 9
- 239000007921 spray Substances 0.000 claims description 8
- 239000011701 zinc Substances 0.000 claims description 8
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- 238000010030 laminating Methods 0.000 claims description 5
- 229910052725 zinc Inorganic materials 0.000 claims description 5
- 238000005498 polishing Methods 0.000 claims description 4
- 238000007750 plasma spraying Methods 0.000 claims description 2
- 238000007751 thermal spraying Methods 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 5
- 238000005507 spraying Methods 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 230000003628 erosive effect Effects 0.000 description 4
- 238000004381 surface treatment Methods 0.000 description 3
- 238000011282 treatment Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 229910021364 Al-Si alloy Inorganic materials 0.000 description 1
- 229910001297 Zn alloy Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Landscapes
- Braking Arrangements (AREA)
Description
【発明の詳細な説明】 〔発明の目的〕 （産業上の利用分野） 本発明は、ディスクブレーキロータの製造方法に関す
る。DETAILED DESCRIPTION OF THE INVENTION Object of the Invention (Field of Industrial Application) The present invention relates to a method for manufacturing a disc brake rotor.
（従来の技術） 例えば自動二輪車の制動装置に用いられるディスクブ
レーキロータは、軽量化を図るため第６図示のようにア
ルミニウムまたはその合金を母材１とし、その表面にス
テンレス鋼板2,2を積層したAl−SUSクラッド鋼板が用い
られるようになっている。(Prior Art) For example, a disc brake rotor used in a braking device of a motorcycle has a base material 1 of aluminum or its alloy as shown in FIG. The Al-SUS clad steel plate is used.
（発明が解決しようとする課題） しかるに上記構成からなるAl−SUSクラッド鋼板によ
り形成されたディスクブレーキロータでは、第７図に部
分拡大断面を示すようにアルミニウム（またはその合
金）からなる母材１とステンレス鋼板2,2との自然電位
が異なるがために積層界面に電蝕3,3が起り、ディスク
ブレーキロータの美観が損なわれるばかりでなく強度低
下をきたす原因ともなりかねない。上記電蝕3,3はアウ
タ面で起ることは少なく、主としてインナ面において生
じる。(Problems to be Solved by the Invention) However, in the disc brake rotor formed of the Al-SUS clad steel plate having the above-mentioned configuration, the base material 1 made of aluminum (or its alloy) as shown in a partially enlarged cross section in FIG. And the stainless steel plates 2 and 2 have different natural potentials, which may cause galvanic corrosion 3 and 3 at the laminated interface, which not only spoils the aesthetics of the disc brake rotor but also causes a decrease in strength. The electrolytic corrosion 3, 3 rarely occurs on the outer surface, but mainly on the inner surface.
上記のクラッド鋼板は実用されて日も浅く、効果的な
防蝕手段が未だ確立されていず、塗料を塗るなどによる
一時的な防蝕が図られているに過ぎない。The above-mentioned clad steel plate has been practically used for a short time, an effective anticorrosion means has not yet been established, and only temporary anticorrosion is achieved by applying a paint or the like.
本発明はこれに鑑み、アルミニウムまたはその合金と
ステンレス鋼板との積層界面の防蝕を図り、もってディ
スクブレーキロータの美観を損なわないと同時に強度劣
化を防ぐことができるディスクブレーキロータの製造方
法を提供することを目的としてなされたものである。In view of this, the present invention provides a method for manufacturing a disc brake rotor, which is capable of preventing corrosion at a laminated interface between aluminum or its alloy and a stainless steel plate, and thus preventing deterioration of strength while not impairing the aesthetics of the disc brake rotor. It was made for the purpose.
（課題を解決するための手段） 上記従来技術が有する課題を解決するため本発明は、
アルミニウムまたはその合金を母材とし、その表面にス
テンレス鋼板を積層して形成される円環状のディスクブ
レーキロータにおいて、ディスクブレーキロータの平面
研磨前に上記積層された母材およびステンレス鋼板の積
層端面に亜鉛またはその合金を溶射ガンにより大気プラ
ズマ溶射し、その溶射被膜を犠牲陽極として母材の積層
接合界面部を防蝕するようにしたことを特徴とする。(Means for Solving the Problems) In order to solve the problems of the above-described conventional technology, the present invention provides:
In an annular disc brake rotor formed by laminating stainless steel plates on the surface of aluminum or its alloy as a base material, on the laminated end surface of the base material and stainless steel plates laminated before the flat grinding of the disc brake rotor It is characterized in that zinc or its alloy is plasma-sprayed by an atmospheric plasma with a spray gun, and the sprayed coating is used as a sacrificial anode to prevent corrosion of the laminated bonding interface of the base material.
（実施例） 以下、本発明の実施例を第１図乃至第４図を参照し、
第６図、第７図と共通する部材については同一符号を用
いて説明する。(Examples) Examples of the present invention will be described below with reference to FIGS.
Members common to FIGS. 6 and 7 will be described using the same reference numerals.
第１図はディスクブレーキロータ４の一例を示すもの
で、アンモニア（または合金）からなる母材１の表面に
ステンレス鋼板2,2を積層して形成されたAl−SUSクラッ
ド鋼板を用いて円環状に形成されている。ディスクブレ
ーキロータ４とする工程としては、第４図に工程図を示
すようにプレスにより円環状に打ち抜く打抜き工程、レ
ベルを修正するレベラ修正工程、端面を機械（旋盤）加
工する端面加工工程を経て円環状素材（クラッドロー
タ）を作り、そのインナ面4Aに亜鉛（または亜鉛合金）
を溶射ガン５により大気プラズマ溶射して被膜６を形成
し、ついでクラッドロータの摺動面の平面研磨を行なっ
て製品とされる。FIG. 1 shows an example of a disc brake rotor 4, which is an annular ring made of an Al-SUS clad steel plate formed by laminating stainless steel plates 2 and 2 on the surface of a base material 1 made of ammonia (or an alloy). Is formed in. As the process of forming the disc brake rotor 4, as shown in the process diagram of FIG. 4, a punching process of punching in an annular shape by a press, a leveler correcting process of correcting the level, and an end face processing process of machining the end face (lathe) are performed. An annular material (clad rotor) is made and zinc (or zinc alloy) is applied to its inner surface 4A.
Is sprayed with an atmospheric plasma by a spray gun 5 to form a coating film 6, and then the sliding surface of the clad rotor is subjected to planar polishing to obtain a product.
上記溶射ガン５による溶射には、第２図示のように平
面研磨前のクラッドロータを複数枚重ね合わせたのちこ
とロータ群を回転させながら溶射ガン５をインナ面4Aに
そって挿入し、溶射を行なう。この場合、溶射ガン５を
クラッドロータの積層方向に移動させるか、あるいはク
ラッドロータ側を移動させて溶射が行なわれる。For the thermal spraying by the thermal spraying gun 5, as shown in FIG. 2, after laminating a plurality of clad rotors before plane polishing, the thermal spraying gun 5 is inserted along the inner surface 4A while rotating the rotor group to perform thermal spraying. To do. In this case, the thermal spray gun 5 is moved in the laminating direction of the clad rotor or the clad rotor side is moved to perform thermal spraying.
溶射されて形成された亜鉛被膜６は、機械的な剪断力
が働かないので密着力を度外視して耐久耐蝕性に見合う
厚さに溶射形成すればよい。そしてこの被膜６は犠牲陽
極となるので、ディスクブレーキロータ４全体の腐蝕か
ら保護する。Since the zinc coating 6 formed by thermal spraying does not act on mechanical shearing force, it may be formed by thermal spraying so as to have a thickness commensurate with durability and corrosion resistance by ignoring the adhesive force. The coating 6 serves as a sacrificial anode and protects the disc brake rotor 4 from corrosion.
第５図は電蝕防止手段例と電蝕度との関係を示す実施
例で、グライドロータの端面に各種の表面処理を行な
い、200℃,300℃,400℃の各温度において24時間保持
し、熱履歴を与えたのち耐蝕性実験を行なった結果であ
る。耐蝕処理としては、（ａ）アロジン処理＋クリア塗
装、（ｂ）ダクロ処理、（ｃ）純Al溶射、（ｄ）Al−Si
合金溶射、（ｅ）純Zn溶射である。耐蝕性試験方法とし
ては、塩水噴霧試験72時間、恒温恒湿保持（30℃で98
％）96時間を１サイクルとしてこれを２サイクルにわた
りテストした。また最高侵蝕量μとは、第７図において
Al母材１が侵蝕した深さ寸法Ｈで示す。FIG. 5 is an example showing the relationship between an example of electrolytic corrosion prevention means and the degree of electrolytic corrosion. Various surface treatments were performed on the end surface of the glide rotor, and the surface was kept at 200 ° C., 300 ° C. and 400 ° C. for 24 hours. These are the results of conducting corrosion resistance experiments after applying thermal history. As the anticorrosion treatment, (a) Alodine treatment + clear coating, (b) Dacro treatment, (c) Pure Al spraying, (d) Al-Si
Alloy spraying, (e) Pure Zn spraying. The corrosion resistance test method is as follows: salt spray test for 72 hours, keeping at constant temperature and humidity (98 at 30 ℃).
%) This was tested for 2 cycles with 96 hours as one cycle. Also, the maximum erosion amount μ is shown in FIG.
The depth dimension H in which the Al base material 1 is eroded is shown.
この実験結果からみて、純Znを溶射して表面処理を行
なった本発明によれば、熱履歴温度が400℃においても
最高侵蝕量が殆んど変化していないことが判明した。From this experimental result, it was found that the maximum erosion amount hardly changed even when the thermal history temperature was 400 ° C. according to the present invention in which the surface treatment was performed by spraying pure Zn.
以上説明したように本発明によれば、ディスクブレー
キロータの平面研磨前に上記積層された母材およびステ
ンレス鋼板の積層端面に亜鉛またはその合金が溶射ガン
により大気プラズマ溶射し、その溶射被膜を犠牲陽極と
して母材の積層接合界面部を防蝕するようにしたことに
より、長時間高温の熱履歴を与えても電蝕による母材の
侵蝕を大巾に低減することができ、ディスクブレーキロ
ータの美観性を損なわないとともに強度劣化を生じるこ
とがない。またまとめて溶射することにより被膜を形成
することができるので、量産が可能であるなどの種々の
効果がある。As described above, according to the present invention, zinc or an alloy thereof is subjected to atmospheric plasma spraying by a spray gun on the laminated end surfaces of the above-mentioned laminated base material and stainless steel plate before the surface polishing of the disc brake rotor, and the sprayed coating is sacrificed. By making the laminated joint interface part of the base material anticorrosive as the anode, it is possible to greatly reduce the base material erosion due to electrolytic corrosion even if a high temperature heat history is given for a long time, and the appearance of the disc brake rotor is improved. The properties are not impaired and the strength is not deteriorated. Further, since the coating film can be formed by collectively spraying, there are various effects such as mass production.
第１図は本発明により得られるディスクブレーキロータ
の一例を示す斜視図、第２図は溶射ガンによる被膜形成
工程を示す説明図、第３図はディスクブレーキロータの
インナ面に被膜が形成された状態を示す断面図、第４図
は本発明の工程図、第５図は本発明によるZn溶射被膜を
形成した場合と他の表面処理した場合との最高浸蝕量の
実験結果を示すグラフ、第６図は本発明が対象とするデ
ィスクブレーキロータの素材であるAl−SUSクラッド鋼
板の部分斜視図、第７図は従来のディスクブレーキロー
タのインナ面の電蝕状態を示す説明図である。 １……母材、２……ステンレス鋼板、４……ディスクブ
レーキロータ、５……溶射ガン、６……被膜。FIG. 1 is a perspective view showing an example of a disc brake rotor obtained by the present invention, FIG. 2 is an explanatory view showing a coating forming process by a spray gun, and FIG. 3 is a coating formed on the inner surface of the disc brake rotor. Fig. 4 is a sectional view showing the state, Fig. 4 is a process chart of the present invention, and Fig. 5 is a graph showing experimental results of the maximum erosion amount when the Zn sprayed coating according to the present invention is formed and when other surface treatment is performed. FIG. 6 is a partial perspective view of an Al-SUS clad steel plate which is a material of the disc brake rotor targeted by the present invention, and FIG. 7 is an explanatory diagram showing an electrolytic corrosion state of the inner surface of the conventional disc brake rotor. 1 ... Base material, 2 ... Stainless steel plate, 4 ... Disc brake rotor, 5 ... Thermal spray gun, 6 ... Coating.
Claims (1)
その表面にステンレス鋼板を積層して形成される円環状
のディスクブレーキロータにおいて、ディスクブレーキ
ロータの平面研磨前に上記積層された母材およびステン
レス鋼板の積層端面に亜鉛またはその合金を溶射ガンに
より大気プラズマ溶射し、その溶射被膜を犠牲陽極とし
て母材の積層接合界面部を防蝕するようにしたことを特
徴とするディスクブレーキロータの製造方法。1. A base material of aluminum or its alloy,
In an annular disc brake rotor formed by laminating stainless steel plates on its surface, zinc or its alloy is sprayed onto the laminated base material and stainless steel plate end faces mentioned above before the flat polishing of the disc brake rotor by a spray gun. A method for manufacturing a disc brake rotor, characterized in that plasma spraying is carried out, and the sprayed coating is used as a sacrificial anode to prevent corrosion of the laminated bonding interface of the base material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63266507A JP2687150B2 (en) | 1988-10-22 | 1988-10-22 | Disc brake rotor manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63266507A JP2687150B2 (en) | 1988-10-22 | 1988-10-22 | Disc brake rotor manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02113133A JPH02113133A (en) | 1990-04-25 |
| JP2687150B2 true JP2687150B2 (en) | 1997-12-08 |
Family
ID=17431872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63266507A Expired - Lifetime JP2687150B2 (en) | 1988-10-22 | 1988-10-22 | Disc brake rotor manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2687150B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7416060B2 (en) | 2004-07-21 | 2008-08-26 | Shimano Inc. | Bicycle disc brake rotor |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995015445A1 (en) * | 1993-12-03 | 1995-06-08 | Kelsey-Hayes Company | Corrosion resistant brake component |
| JP6368529B2 (en) * | 2014-04-28 | 2018-08-01 | 株式会社シマノ | Brake plate assembly for fishing reel drag mechanism, and fishing reel provided with brake plate assembly for fishing reel drag mechanism |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5388687U (en) * | 1976-12-21 | 1978-07-20 | ||
| JPS62141326A (en) * | 1985-12-13 | 1987-06-24 | Hitachi Chem Co Ltd | Friction material |
| JPS63140130A (en) * | 1986-11-29 | 1988-06-11 | Daido Kogyo Co Ltd | Brake disk |
-
1988
- 1988-10-22 JP JP63266507A patent/JP2687150B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7416060B2 (en) | 2004-07-21 | 2008-08-26 | Shimano Inc. | Bicycle disc brake rotor |
| US7424938B2 (en) | 2004-07-21 | 2008-09-16 | Shimano Inc. | Bicycle disc brake rotor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02113133A (en) | 1990-04-25 |
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