JP2539516B2 - Rust prevention method for leaf springs - Google Patents
Rust prevention method for leaf springsInfo
- Publication number
- JP2539516B2 JP2539516B2 JP1274904A JP27490489A JP2539516B2 JP 2539516 B2 JP2539516 B2 JP 2539516B2 JP 1274904 A JP1274904 A JP 1274904A JP 27490489 A JP27490489 A JP 27490489A JP 2539516 B2 JP2539516 B2 JP 2539516B2
- Authority
- JP
- Japan
- Prior art keywords
- spring
- coating
- rust preventive
- leaf spring
- leaf springs
- 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
Landscapes
- Springs (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は、重ね板ばね、すなわち、重ね合わせた２枚
以上のばね板により構成された重ね板ばねのさび止め方
法に関するものである。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a leaf spring, that is, a method for preventing rust of a leaf spring composed of two or more superposed leaf springs.
従来の技術 このような構成を有している重ね板ばねは、ばね板同
士の間の擦過しゅう動によって生ずる摩擦力による減衰
効果を有するので、他の減衰手段を必要としないか、あ
るいは、小容量の減衰手段の使用で済むという利点があ
り、車両の懸架装置用として広く使用されていること
は、周知のとおりである。2. Description of the Related Art A leaf spring having such a structure has a damping effect due to a frictional force generated by rubbing sliding between spring plates, so that it does not require any other damping means or is small in size. It is well known that it has the advantage that it only requires the use of capacity dampening means and is widely used for vehicle suspensions.
しかしながら、その反面、このような構成を有してい
る重ね板ばねは、その構造上、隣接するばね板の重なり
合った部分に狭いすき間が生ずることを避けることが出
来ず、そのために、このすき間内に外部から浸入する水
分や、電解性溶液（例えば、路面凍結防止剤など）など
によるすき間腐食が生じ、この結果、腐食疲労に基づく
ばね板の折損事故が発生する恐れがあるなどという問題
点を有している。On the other hand, on the other hand, the leaf spring having such a structure cannot avoid a narrow gap in the overlapping portion of the adjacent spring plates due to its structure, and therefore, the gap in the gap cannot be avoided. There is a problem that crevice corrosion due to water entering from the outside or electrolytic solution (for example, road surface deicing agent) may result in breakage of spring plate due to corrosion fatigue. Have
従来、この問題点を解決するために、重ね板ばねにお
いて、それを構成している各ばね板の表面に、合成樹脂
系塗料によるさび止め塗装が施されているが、上記のよ
うな、擦過しゅう動による塗膜のはがれにより、すき間
腐食の防止の効果を充分に上げることが困難であり、最
近においては、塗膜が多少はがれても、電気防食効果を
発揮する高濃度亜鉛末塗料が提案されており、既に、車
両懸架装置用重ね板ばねに実施されて、一応の効果のあ
ることが確認されている。Conventionally, in order to solve this problem, in the leaf spring, the surface of each spring plate constituting the leaf spring is coated with rust preventive by synthetic resin paint. It is difficult to sufficiently improve the effect of preventing crevice corrosion due to peeling of the coating film due to sliding, and recently, a high-concentration zinc dust coating has been proposed that exhibits an anticorrosion effect even if the coating film is slightly peeled off. However, it has already been confirmed that it has a tentative effect when applied to a leaf spring for a vehicle suspension system.
しかしながら、亜鉛末塗料だけによっては、酸性及び
アルカリ性の環境の下における使用により、亜鉛が容易
に溶出してしまい、その本来のさび止め効果が無くなる
という難点があり、また、路面凍結防止剤による腐食環
境の悪化や、高応力化による軽量化が進む現状から見
て、車両の保証期間の延長という社会要求に対しても、
まだ、不十分であるという問題点が残されている。However, zinc dust coating alone has the drawback that zinc is easily eluted when used in acidic and alkaline environments, and its original rust preventive effect is lost. Considering the current situation of environmental deterioration and weight reduction due to high stress, even in response to the social demand of extending the warranty period of the vehicle,
Still, there is a problem that it is insufficient.
発明が解決しようとする課題 そこで、本発明は、従来公知の重ね板ばねにおける上
記のような問題点ないしは難点を解決することが可能で
ある重ね板ばねの新規な改良されたさび止め方法を得る
ことを、その課題とするものである。SUMMARY OF THE INVENTION Therefore, the present invention provides a novel and improved rust preventive method for a leaf spring which can solve the above-mentioned problems or difficulties in the conventionally known leaf springs. That is the task.
課題を解決するための手段 本発明方法は、この課題を解決するために、重ね板ば
ねを構成している各ばね板の表面に高濃度亜鉛末塗料を
塗装した後、この塗膜上に、ワックスベース石油系さび
止め剤を被覆して２層とすることにより耐腐食疲労強度
を向上させることを特徴とするものである。Means for Solving the Problem The method of the present invention is, in order to solve this problem, after coating a high-concentration zinc dust coating on the surface of each spring plate constituting the leaf spring, on this coating film, The wax-based petroleum-based rust preventive agent is coated into two layers to improve the corrosion fatigue strength.
本発明方法は、ばね板表面上に高濃度亜鉛末塗料を厚
く塗布しても耐腐蝕疲労強度は同程度であり、その外周
面にワックスベース石油系さび止め剤を塗布すると当該
疲労強度が２倍以上向上することを見いだしたものであ
る。According to the method of the present invention, even if a high-concentration zinc dust coating is applied thickly on the surface of a spring plate, the corrosion resistance to fatigue is about the same, and if a wax-based petroleum-based rust inhibitor is applied to the outer peripheral surface, the fatigue strength is 2%. It has been found to improve more than twice.
実施例 以下、本発明方法を、その実施例に基づいて、詳細に
説明をする。Examples Hereinafter, the method of the present invention will be described in detail based on Examples.
本発明方法は、ばね板の表面の上に高濃度亜鉛末塗料
を塗装し、その上にワックスベース石油系さび止め剤を
被覆して２層塗装が実施されることを特徴とするもので
あるが、その実施に当たっては、「石油系さび止め剤」
として、 JIS K 2246の「溶剤希釈形さび止め油（１〜４種）」
に相当するものが適当であるものとして挙げることが出
来、この中でも、特に、４種（NP-19）に相当するもの
を、最も適当なものとして挙げることが出来る。The method of the present invention is characterized in that a high-concentration zinc dust coating is applied onto the surface of a spring plate, and a wax-based petroleum-based rust preventive agent is applied onto the surface of the spring to perform two-layer coating. However, in implementing it, "petroleum-based rust inhibitor"
JIS K 2246 "solvent diluted rust preventive oil (1 to 4 types)"
The ones corresponding to the above can be mentioned as suitable ones, and among these, those corresponding to four kinds (NP-19) can be mentioned as the most suitable ones.
このような「石油系さび止め剤」による被覆膜は、こ
の被覆膜により被覆される気孔の多い高濃度亜鉛末塗料
の塗膜に対して、気孔を封鎖する処理効果を発揮し、水
分や、電解性溶液などの塗膜内部への浸入を防止し、し
かも、乾燥後も、一般の塗料による塗膜とは異なり、半
硬化塑性膜であるので、繰り返し応力が作用する苛酷な
使用条件の下においても、被覆膜のひび割れの生ずるこ
とも無く、ばね板の間に、すき間自体の発生することを
抑制し、更に、その潤滑性によって、ばね板の間の擦過
しゅう動による酸化摩耗粉の生成をも抑制するものであ
る。Such a coating film of "petroleum-based rust preventive agent" exerts a treatment effect of blocking pores on a coating film of a high-concentration zinc dust coating having many pores, which is covered by the coating film, and has a moisture content. It is a semi-hardening plastic film that prevents the infiltration of electrolytic solution and the like into the coating film, and even after drying it is a semi-hardened plastic film, so it is subjected to severe stress conditions where repeated stress acts. Even under pressure, the coating film is not cracked and the gap itself is suppressed between the spring plates, and its lubricity prevents the generation of oxidative wear powder due to rubbing between the spring plates. It also suppresses.
次に、本発明の効果を確認するために行われた実験例
及びその結果について説明をする。Next, an experimental example conducted to confirm the effect of the present invention and the result thereof will be described.
実験例 本実験は、ばね板に本発明によるさび止め処理を施し
たものと、比較品として、従来技術による各種の塗膜を
施したもの及びその他のものとを、次ぎに示すような実
験条件の下に、台上腐食疲労試験を行ったものである
が、この実験により、表に示すような結果が得られた。Experimental Example In this experiment, the spring plate subjected to the rust preventive treatment according to the present invention, and the comparative products to which various coating films according to the prior art were applied and others were tested under the following experimental conditions. A bench corrosion fatigue test was carried out underneath, and the results shown in the table were obtained by this experiment.
実験条件 供試ばね：大型トラック用フロントスプリング ばね諸元（mm）:1,500×80×13-1.16-2.13-2 腐食疲労：（１サイクル） 泥塩水浸漬湿潤乾燥湿潤加振 加振条件：（荷重）2,250kg±1,350kg （速度）60cpm （頻度）15,000回／週 なお、各ばね板に対するさび止め処理の詳細について
は、試験結果を示す表に記載されている。Experimental condition Test spring: Front spring for large truck Spring specifications (mm): 1,500 × 80 × 13-1.16-2.13-2 Corrosion fatigue: (1 cycle) Mud / salt water immersion Wet dry Wet vibration Excitation condition: (Load ) 2,250kg ± 1,350kg (Speed) 60cpm (Frequency) 15,000 times / week The details of the rust preventive treatment for each spring plate are described in the table showing the test results.
表の数値から、本発明によるさび止め処理を施したば
ね板が、従来技術によるさび止め塗料を施したばね板に
比べ、２倍以上優れた耐腐食疲労強度を有していること
が、分かる。 From the numerical values in the table, it can be seen that the spring plate subjected to the rust preventive treatment according to the present invention has corrosion fatigue strength that is at least twice as excellent as that of the spring plate subjected to the rust preventive coating according to the prior art.
このように、本発明方法によると、高濃度亜鉛末塗料
を施されたばね板に更にワックスベース石油系さび止め
剤を被覆することにより、ワックスベース石油系さび止
め剤の被覆の無いものに比べ、ばね板の耐腐食疲労強度
を飛躍的に増加させることが、出来るものである。As described above, according to the method of the present invention, by coating the spring plate coated with the high-concentration zinc dust coating with the wax-based petroleum-based rust inhibitor, the wax-based petroleum-based rust inhibitor is not coated, It is possible to dramatically increase the corrosion resistance and fatigue strength of the spring plate.
発明の効果 本発明方法によると、上記のように、重ね板ばねにお
いて、この重ね板ばねを形成する各ばね板の表面に、高
濃度亜鉛末塗料を施した後、この塗膜の上に、ワックス
ベース石油系さび止め剤を被覆することにより、重ね板
ばねの耐腐食疲労強度がワックスベース石油系さび止め
剤を被覆しないものに比べ２倍以上となり優れた効果を
もたらす。According to the method of the present invention, as described above, in the leaf spring, on the surface of each spring plate forming the leaf spring, after applying a high-concentration zinc dust coating, on the coating film, By coating with a wax-based petroleum-based rust preventive agent, the corrosion fatigue strength of the leaf spring is more than double that of the case where the wax-based petroleum-based rust preventive agent is not coated, resulting in an excellent effect.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 小勝 康雄 東京都江東区東雲１丁目９番31号 三菱 製鋼株式会社東京製作所内 (56)参考文献 特開 昭61−243867（ＪＰ，Ａ) 特開 昭62−238384（ＪＰ，Ａ) 実開 昭60−75177（ＪＰ，Ｕ) 実公 昭31−17309（ＪＰ，Ｙ１) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yasuo Ogatsu 1-9-31 Shinonome, Koto-ku, Tokyo Mitsubishi Steel Mfg. Co., Ltd. (56) Reference JP-A-61-243867 (JP, A) JP Showa 62-238384 (JP, A) Showa 60-75177 (JP, U) Showa 31-17309 (JP, Y1)
Claims (1)
構成された重ね板ばねにおいて、重ね板ばねを構成する
各ばね板の表面に、高濃度亜鉛末塗料を施した後、この
塗膜の上にワックスベース石油系さび止め剤を被覆して
２層とすることにより耐腐食疲労強度を向上させること
を特徴とする重ね板ばねのさび止め方法。1. A laminated leaf spring composed of at least two laminated leaf springs, wherein a high-concentration zinc dust coating is applied to the surface of each spring leaf constituting the laminated leaf spring, and then this coating film is coated. A rust preventive method for a laminated leaf spring, which comprises coating a wax-based petroleum-based rust preventive agent on top to form two layers to improve corrosion fatigue strength.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1274904A JP2539516B2 (en) | 1989-10-24 | 1989-10-24 | Rust prevention method for leaf springs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1274904A JP2539516B2 (en) | 1989-10-24 | 1989-10-24 | Rust prevention method for leaf springs |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03140639A JPH03140639A (en) | 1991-06-14 |
| JP2539516B2 true JP2539516B2 (en) | 1996-10-02 |
Family
ID=17548151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1274904A Expired - Lifetime JP2539516B2 (en) | 1989-10-24 | 1989-10-24 | Rust prevention method for leaf springs |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2539516B2 (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5616572Y2 (en) * | 1978-10-03 | 1981-04-17 | ||
| JPS6075177U (en) * | 1983-10-29 | 1985-05-27 | 三菱自動車工業株式会社 | Structural materials for vehicles |
| JPS61243867A (en) * | 1985-04-23 | 1986-10-30 | Sekisui Jushi Co Ltd | Corrosion-resistant paint |
| JPS62114676A (en) * | 1985-11-13 | 1987-05-26 | Honda Motor Co Ltd | Apparatus for applying anticorrosion wax to floor part of car body |
| JPS62238384A (en) * | 1986-04-10 | 1987-10-19 | Toshiba Corp | Rust preventing treatment for high manganese steel |
-
1989
- 1989-10-24 JP JP1274904A patent/JP2539516B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03140639A (en) | 1991-06-14 |
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