JPS61174333A - Manufacture of spring holder - Google Patents
Manufacture of spring holderInfo
- Publication number
- JPS61174333A JPS61174333A JP1602585A JP1602585A JPS61174333A JP S61174333 A JPS61174333 A JP S61174333A JP 1602585 A JP1602585 A JP 1602585A JP 1602585 A JP1602585 A JP 1602585A JP S61174333 A JPS61174333 A JP S61174333A
- Authority
- JP
- Japan
- Prior art keywords
- cast iron
- spring holder
- spheroidal graphite
- graphite cast
- holding
- 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
Landscapes
- Heat Treatment Of Articles (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は製造法に係り、特にトラック懸架装置あるいは
、鉄道車両に用いるばね受の製造方法に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a manufacturing method, and particularly to a method for manufacturing a spring receiver used in a truck suspension system or a railway vehicle.
ばね受は、強靭性と、耐摩耗性を要求されるためパーラ
イト球状黒鉛鋳鉄あるいは必要部位に高周波焼入れした
鍛造品さらには高Ｍ ｎ Ｑ調高などが一般に広く使用
されている。Since spring bearings are required to have toughness and wear resistance, pearlite spheroidal graphite cast iron, forged products with induction hardening in required areas, and high M n Q tuning are generally widely used.
パーライト球状黒鉛鋳鉄品は耐摩耗性が劣るため摩耗が
早く、また低温では衝撃により割れる恐れがある。鋼の
鍛造材に高周波焼入れしたばね受は表面硬度が高く相手
材であるばねを損傷したり焼入部が摩耗すると急速に摩
耗が進行する。また高Ｍｎ鋳鋼品は材料費、加工費が高
価であるなどいずれも問題が残されいてる。Pearlite spheroidal graphite cast iron products have poor abrasion resistance, so they wear out quickly, and there is a risk of cracking due to impact at low temperatures. Spring bearings made of forged steel that is induction hardened have a high surface hardness, and if the mating spring is damaged or the hardened parts wear out, the wear progresses rapidly. Furthermore, high Mn cast steel products still have problems such as high material costs and high processing costs.
このようにパーライト球状黒鉛鋳鉄製は摩耗が早く部品
の交換に工数を要し、鋼の鍛造品では高周波焼入が必要
でしかも相手のばねを損傷する。In this way, products made of pearlite spheroidal graphite cast iron wear quickly and require man-hours to replace parts, while forged steel products require induction hardening and damage the mating spring.
また高Ｍｎ鋳鋼品は原価高になるなど好ましからざる多
くの要素を有するものである。Furthermore, high Mn cast steel products have many undesirable factors such as high cost.
本発明の目的は、製造原価を低減し、耐用寿命を増大し
得るばね受の製造方法を提供するものである。An object of the present invention is to provide a method for manufacturing a spring bearing that can reduce manufacturing costs and increase service life.
本発明の要旨は、球状黒鉛鋳鉄製ばね受を、素材のまま
又は荒加工後、８３０〜９００ ’Ｃに０゜５〜３時間
加熱保持した後、２００〜４００℃に急冷して０．５時
間以上保持するオーステンパー処理を行ない、基地組織
をベイナイトとオーステナイトの混合組織とし、ついで
正寸加工する構成としたものである。The gist of the present invention is to heat and hold a spring bearing made of spheroidal graphite cast iron as it is or after rough processing at 830-900'C for 0°5-3 hours, and then rapidly cool it to 200-400'C. The structure is such that an austempering treatment is performed for a period of time or more, the base structure is made into a mixed structure of bainite and austenite, and then the structure is processed to size.
以下本発明によるばね受の製造方法について詳細に説明
する。The method for manufacturing a spring receiver according to the present invention will be explained in detail below.
まず、化学組成については、一般に知られている球状黒
鉛鋳鉄と同じであり、かつその成分範囲もよく知られて
いるので説明を省略する。First, the chemical composition is the same as that of generally known spheroidal graphite cast iron, and the range of its components is also well known, so the explanation will be omitted.
このように通常の化学組成を有する球状黒鉛鋳鉄製のば
ね受を、素材のまま又は荒加工後、オーステナイト化条
件として８３０〜９００℃で０゜５〜３時間加熱保持し
た後すみやかに２００〜４００℃の塩浴あるいは流動層
中に浸漬、急冷し、０．５時間以上保持してベイナイト
変態させた後、常温まで冷却するものである。In this way, a spring bearing made of spheroidal graphite cast iron having a normal chemical composition is heated and held at 830 to 900°C for 5 to 3 hours as an austenitizing condition, either as a raw material or after rough processing, and then immediately heated to 200 to 400°C. The material is immersed in a salt bath or fluidized bed at .degree. C., rapidly cooled, held for 0.5 hours or more to undergo bainite transformation, and then cooled to room temperature.
このオーステンパー処理条件の限定理由について説明す
る。オーステナイト化加熱を８３０〜ｂ下では大型車画
用ばね受のような肉厚品の場合。The reason for limiting the austempering conditions will be explained. When heating to austenitize at 830~B, thick products such as spring holders for large cars can be heated.
オーステナイト化に要する時間が増大し、９００°Ｃ以
上ではオーステナイト結晶粒が粗大化し強度が低下する
ためである。This is because the time required for austenitization increases, and at temperatures above 900°C, austenite crystal grains become coarse and strength decreases.
保持時間は肉厚によって異なるが、オーステナイト化に
必要な最低時間は０．５時間で肉厚部でも３時間保持す
れば充分である。The holding time varies depending on the wall thickness, but the minimum time required for austenitization is 0.5 hours, and even in thick parts, holding for 3 hours is sufficient.
恒温変態処理条件を２００〜ｂ
時間以上としたのは、２００℃以下では硬度が高くなり
、切削性が低下する。また４００℃以上の温度では耐摩
耗性上大きな効果も期待できず、熱エネルギー的にも不
利であり、いたずらに原価の高騰を招くからである。The reason why the isothermal transformation treatment conditions are set to 200 to 200 b hours or more is because below 200°C, the hardness increases and the machinability decreases. Further, at a temperature of 400° C. or higher, no great effect can be expected in terms of wear resistance, and it is also disadvantageous in terms of thermal energy, which unnecessarily increases the cost.
〔実施例、１〕
（２）注入温度 １，４００〜１，４２０℃（３）熱処
理 ８７０℃Ｘ２Ｈ
（５）試験結果
本発明により製造されたばね受の摩耗試験結果を第１図
に示す。[Example 1] (2) Injection temperature: 1,400 to 1,420°C (3) Heat treatment: 870°C x 2H (5) Test results The results of the wear test of the spring bearing manufactured according to the present invention are shown in FIG.
第１図では、従来品（Ｓ３５Ｃ製）のばね受・印の摩耗
量に対し、本発明によるばね受Ｑ印の摩耗量はきわめて
少なく、また従来品のばね一印の摩耗量に対しても本発
明の製造法によって得られたばね受を用いたばね０印の
摩耗量も著しく少ないことがわかる。In Fig. 1, the amount of wear of the spring holder marked Q according to the present invention is extremely small compared to the amount of wear of the spring holder marked Q of the conventional product (made by S35C), and also compared to the amount of wear of the spring holder marked Q of the conventional product. It can be seen that the amount of wear of the spring marked 0 using the spring bearing obtained by the manufacturing method of the present invention is also significantly small.
本発明により製造されたばね受の特徴を列記すると下記
の通りである。The characteristics of the spring receiver manufactured according to the present invention are listed below.
（１）球状黒鉛鋳鉄であるため、素材重量と加工工数を
大幅に低減し得た。(1) Since it is made of spheroidal graphite cast iron, the weight of the material and the number of processing steps can be significantly reduced.
（２）高周波焼入れを必要とせず、高度の耐摩耗性を有
す。(2) Does not require induction hardening and has high wear resistance.
（３）鍛造品に比べ材料歩留がきわめて良好である。(3) Material yield is extremely good compared to forged products.
（４）特殊鋼と同等に近い機械的性質を有す。(4) It has mechanical properties close to those of special steel.
（５）球状黒鉛を有するため、自己潤滑性及びなじみ性
が良い。(5) Since it contains spherical graphite, it has good self-lubricity and conformability.
（６）ばねの損耗を防止し得る。(6) Spring wear can be prevented.
（７）鍛造品に比べ８％重量を軽減しうる。(7) Weight can be reduced by 8% compared to forged products.
以上の説明で明らかなように、本発明により製造された
ばね受は、製造工程が短縮されるので装造原価がきわめ
て低置であり、しかもばね受として最も適した特性を備
えるなど工業的に顕著な効果を有するものである。As is clear from the above explanation, the spring bearing manufactured by the present invention has an extremely low manufacturing cost because the manufacturing process is shortened, and has characteristics that are most suitable for a spring bearing, making it industrially outstanding. It has a great effect.
第１図は摩耗試験結果を示すものである。 以上 FIG. 1 shows the results of the wear test. that's all
Claims (1)
３０〜９００℃に０．５〜３時間加熱保持した後２００
〜４００℃に急冷して０．５時間以上保持するオーステ
ンパー処理を行ない、基地組織をベイナイトとオーステ
ナイトの混合組織とし、ついで正寸加工することを特徴
とするばね受の製造方法。8. Spheroidal graphite cast iron spring bearing as is or after rough processing.
After heating and holding at 30-900℃ for 0.5-3 hours, 200℃
A method for manufacturing a spring bearing, characterized by performing an austempering treatment by rapidly cooling to ~400°C and holding for 0.5 hours or more to make the base structure a mixed structure of bainite and austenite, and then processing to size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1602585A JPS61174333A (en) | 1985-01-30 | 1985-01-30 | Manufacture of spring holder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1602585A JPS61174333A (en) | 1985-01-30 | 1985-01-30 | Manufacture of spring holder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61174333A true JPS61174333A (en) | 1986-08-06 |
Family
ID=11905023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1602585A Pending JPS61174333A (en) | 1985-01-30 | 1985-01-30 | Manufacture of spring holder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61174333A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01105649U (en) * | 1987-12-28 | 1989-07-17 | ||
| EP0622466A1 (en) * | 1993-04-26 | 1994-11-02 | Mercedes-Benz Ag | Method of hardening pieces of spheroidal graphite cast iron |
| JP2009541130A (en) * | 2006-06-27 | 2009-11-26 | ボンバルディアー トランスポーテーション ゲゼルシャフト ミット ベシュレンクテル ハフツング | Dolly frame of rail vehicle |
| NL2002248C2 (en) * | 2008-11-24 | 2010-05-26 | Weweler Nv | Hardening of flexible trailing arms. |
-
1985
- 1985-01-30 JP JP1602585A patent/JPS61174333A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01105649U (en) * | 1987-12-28 | 1989-07-17 | ||
| EP0622466A1 (en) * | 1993-04-26 | 1994-11-02 | Mercedes-Benz Ag | Method of hardening pieces of spheroidal graphite cast iron |
| JP2009541130A (en) * | 2006-06-27 | 2009-11-26 | ボンバルディアー トランスポーテーション ゲゼルシャフト ミット ベシュレンクテル ハフツング | Dolly frame of rail vehicle |
| NL2002248C2 (en) * | 2008-11-24 | 2010-05-26 | Weweler Nv | Hardening of flexible trailing arms. |
| WO2010059037A1 (en) * | 2008-11-24 | 2010-05-27 | Weweler Nederland B.V. | Hardening of flexible trailing arms |
| EP2594652A1 (en) * | 2008-11-24 | 2013-05-22 | VDL Weweler B.V. | Hard flexible trailing arms |
| US8480104B2 (en) | 2008-11-24 | 2013-07-09 | Weweler Nederland B.V. | Hardening of flexible trailing arms |
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