JPS616248A - Rotor provided with hub and its manufacture - Google Patents
Rotor provided with hub and its manufactureInfo
- Publication number
- JPS616248A JPS616248A JP12538184A JP12538184A JPS616248A JP S616248 A JPS616248 A JP S616248A JP 12538184 A JP12538184 A JP 12538184A JP 12538184 A JP12538184 A JP 12538184A JP S616248 A JPS616248 A JP S616248A
- Authority
- JP
- Japan
- Prior art keywords
- hub
- rotor
- graphite structure
- cast iron
- molten metal
- 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
- Braking Arrangements (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は複合一体型のハブ付ロータとその製造方法に係
り、特にハブ部を球状黒鉛組織となし、ロータ部を片状
黒鉛組織とせるハブ付ロータとその製造法に関するもの
である。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a composite integrated rotor with a hub and a method for manufacturing the same, and particularly relates to a hub portion having a spherical graphite structure and a rotor portion having a flaky graphite structure. This invention relates to a rotor with a hub and its manufacturing method.
自動車用ブレーキ部品として用いられている摺動部材、
いわゆるハブ付ロータはハブ部を球状黒鉛鋳鉄及び/又
はバーミキュラ黒鉛鋳鉄で製造し、ロータ部は片状黒鉛
組織により製造し、両者を取付ボルトによって同心に固
着して組み立て使用している。Sliding members used as automobile brake parts,
The so-called hub-equipped rotor has a hub part made of spheroidal graphite cast iron and/or vermicular graphite cast iron, and a rotor part made of flaky graphite structure, and the two are fixed concentrically with mounting bolts and used in an assembled manner.
すなわち、ハブ部は強靭性つまり30kgf/am2以
上の引張強さ、6%以上の伸び、2 kgf−1117
01112以上の衝撃値など8!械的性質の優れた球状
黒鉛鋳鉄又はこれに近い性質を有するバーミキエラ黒鉛
鋳鉄が多用されている。In other words, the hub part has strong toughness, that is, tensile strength of 30 kgf/am2 or more, elongation of 6% or more, and 2 kgf-1117.
Shock value of 01112 or more 8! Spheroidal graphite cast iron, which has excellent mechanical properties, or vermicelli graphite cast iron, which has properties similar to this, is often used.
一方、ロータ部は熱伝導率が常温で0.12cal/
cm、 see、 ℃以上であるとともに、耐ヒートク
ラツク性、耐摩耗性が良好であり、ブレーキ制動時の騒
音を防止し、ブレーキパッドとのなじみが良く、しかも
減衰能の大なること(比滅責率5〜10%)などが要求
されるので、これらの緒特性に対応し得る材料として黒
鉛面積10%以上のFCIO〜FC25程度の片状黒鉛
鋳鉄が広く利用されている。On the other hand, the thermal conductivity of the rotor section is 0.12 cal/at room temperature.
cm, see, °C or higher, has good heat crack resistance and wear resistance, prevents noise during braking, has good compatibility with brake pads, and has high damping capacity (comparable liability). FCIO to FC25 flake graphite cast iron with a graphite area of 10% or more is widely used as a material that can meet these properties.
このようなハブとロータを機械的に結合した場合、部品
点数の増加による10〜30%の重量の増大、価格の高
騰、占有体積の増加などを招くので、本発明者等はさ慇
に特願昭58−130927号の発明、すなわちハブ部
を球状黒鉛鋳鉄及び/又はバーミキエラ黒鉛鋳鉄となし
ロータ部を片状黒鉛鋳鉄となした摺動部材の製造法を開
発した。If such a hub and rotor are mechanically coupled, the increase in the number of parts will increase the weight by 10 to 30%, the price will rise, and the occupied volume will increase. We have developed the invention of Application No. 58-130927, that is, a method for manufacturing a sliding member in which the hub part is made of spheroidal graphite cast iron and/or vermicelli graphite cast iron and the rotor part is made of flaky graphite cast iron.
組成の異なるハブ部とロータ部を鋳造時に冶金的に融合
一体化する場合、片状黒鉛鋳鉄のS含有量が0.015
%を超えるとその境界部には第5図に示すような多量の
共晶黒鉛を有する異常な層が発生する。When the hub part and rotor part, which have different compositions, are metallurgically fused and integrated during casting, the S content of flake graphite cast iron is 0.015.
%, an abnormal layer containing a large amount of eutectic graphite as shown in FIG. 5 is generated at the boundary.
この異常層は機械的性質が者しく劣り、例えば抗張力は
16 kgf/ rsta2伸びは0.8%に過ぎず、
特に衝撃値は0 、1 kgf1/ cm2 と低位を
示し、自動車用の重要保安部品としては大きな危険性を
包含するものである。This abnormal layer has extremely poor mechanical properties, for example, the tensile strength is 16 kgf/rsta2 elongation is only 0.8%,
In particular, the impact value is low at 0.1 kgf1/cm2, and it is highly dangerous as an important safety part for automobiles.
本発明の目的は、複雑な工程を経ることなく、ハブ部と
ロータ部の境界部に材質劣化層が生じないハブ付ロータ
とその製造法を提供するにある。An object of the present invention is to provide a hub-equipped rotor and a method for manufacturing the same, in which no material deterioration layer is generated at the boundary between the hub portion and the rotor portion without going through complicated steps.
以下本発明を図面に基づいて詳細に説明する。 The present invention will be explained in detail below based on the drawings.
第1図は本発明のハブ付ロータを製造するための鋳型の
断面図である。FIG. 1 is a sectional view of a mold for manufacturing the hub-equipped rotor of the present invention.
本発明は、ハブ部を球状黒鉛鋳鉄及び/又はバーミキュ
ラ黒鉛組織となし、ロータ部を片状黒鉛組織とせるハブ
付ロータの上記片状組織部分のS含有量を0.015重
量%(以下単に%と記す)に規制したものであり、また
これを製造、−37
するにあたり、S含有量0.015%以下に規制した片
状黒鉛鋳鉄組成を有する溶湯を砂型鋳型1のロータ空隙
部2に所望量注湯し、この溶湯の温度が800〜1,1
40℃にある時点で球状黒鉛鋳鉄又はバーミキエラ黒鉛
鋳鉄組成を有する溶湯を上記砂型鋳型1のハブ空隙部3
に注湯するものである。The present invention provides a rotor with a hub in which the hub part is made of spheroidal graphite cast iron and/or vermicular graphite structure, and the rotor part is made of flaky graphite structure, and the S content of the flaky structure part is 0.015% by weight (hereinafter simply referred to as 0.015% by weight). In order to manufacture this, a molten metal having a composition of flaky graphite cast iron with an S content of 0.015% or less is placed in the rotor cavity 2 of the sand mold 1. Pour the desired amount of molten metal, and the temperature of this molten metal is 800 to 1,1
At a temperature of 40°C, the molten metal having a composition of spheroidal graphite cast iron or vermicelli graphite cast iron is poured into the hub cavity 3 of the sand mold 1.
It is used to pour hot water into the water.
以上の構成により次の作用を説明する。 The following operation will be explained using the above configuration.
まずS含有量を0.015%以下に規制した片状黒鉛鋳
鉄組成を有する溶湯を湯口4よりロータ空隙部2に所望
量注入する。First, a desired amount of molten metal having a composition of flaky graphite cast iron with the S content regulated to 0.015% or less is injected into the rotor cavity 2 through the sprue 4.
つぎにこのロータ空隙部2に注入された片状黒鉛鋳鉄の
温度が800〜1,140℃にある時点で球状黒鉛鋳鉄
又はバーミキュラ黒鉛鋳鉄組成を有する溶湯を湯口5よ
り注入しハブ空隙部3に充満せしめるものであるが、前
述のように片状黒鉛鋳鉄溶湯の温度外圧800〜1,1
40℃であるため、後に注入した球状黒鉛鋳鉄の溶湯と
完全に融合して良好な境界部を得るこ、−47−
とがでとるものである。Next, when the temperature of the flaky graphite cast iron injected into the rotor cavity 2 is 800 to 1,140°C, molten metal having a composition of spheroidal graphite cast iron or vermicular graphite cast iron is injected from the sprue 5 into the hub cavity 3. As mentioned above, the temperature and external pressure of the flaky graphite cast iron molten metal is 800 to 1.1.
Since the temperature is 40°C, it is possible to completely fuse with the molten spheroidal graphite cast iron injected later to obtain a good boundary.
先に注入した溶湯が凝固して温度がa o o ’c未
満に低下すると表面に酸化皮膜の形成が者しく進行し良
好な冶金的結合層を得ることがで外ない。When the previously injected molten metal solidifies and the temperature drops below a o'c, the formation of an oxide film on the surface progresses steadily, and it is inevitable that a good metallurgical bonding layer will be obtained.
また温度が1..140℃を超えると先に注入した片状
黒鉛鋳鉄が球状黒鉛鋳鉄により多量に再溶解され、これ
が混入して健全な結合層が得られないばかりでなく、境
界部を所望の位置に安定して得ることができない。Also, the temperature is 1. .. If the temperature exceeds 140°C, a large amount of the previously injected flaky graphite cast iron will be remelted by the spheroidal graphite cast iron, and this will not only prevent a sound bonding layer from being obtained, but also make it difficult to maintain the boundary at the desired position. can't get it.
また鋳型を砂型鋳型に限定した理由は、鋳型が砂型であ
ると鋳型内に注入した溶湯が急冷されず、優れたブレー
キ性能を有する普通鋳鉄として最も好ましい片状黒鉛鋳
鉄を得ることがでbるためである。The reason why the mold is limited to a sand mold is that if the mold is a sand mold, the molten metal poured into the mold will not be rapidly cooled, making it possible to obtain flake graphite cast iron, which is the most preferable ordinary cast iron with excellent braking performance. It's for a reason.
〔実施例〕
1、化学成分
(1)片状黒鉛鋼鉄組成を有する溶湯の化学成分を第1
表に示す。[Example] 1. Chemical composition (1) The chemical composition of the molten metal having the composition of flake graphite steel was
Shown in the table.
(2)球状黒鉛鋳鉄組成を有する溶湯の化学成分を第2
表に示す。(2) The chemical composition of the molten metal having the composition of spheroidal graphite cast iron is
Shown in the table.
2、儲 型 鋳型はCO2型を使用した。2. Mold A CO2 mold was used.
3、硬 度
(1)片状黒鉛組織部の硬度(HB) 114.119
(2)球状黒鉛組織部の硬度(HB ) 243.25
24、結 果
第2図で明らかなようにハブ部は機械的性質の良好な球
状黒鉛組織であり、ロータ部は第3図に示すようにブレ
ーキ性能の優れた片状黒鉛組織が認められ、その境界部
は第4図に示すように共晶黒鉛などの異常組織は全く認
められず正常な機械的性質を有するものである。3. Hardness (1) Hardness of flaky graphite structure (HB) 114.119
(2) Hardness of spheroidal graphite structure (HB) 243.25
24.Results As is clear from Figure 2, the hub part has a spheroidal graphite structure with good mechanical properties, and the rotor part has a flake graphite structure with excellent braking performance, as shown in Figure 3. As shown in FIG. 4, the boundary area has normal mechanical properties with no abnormal structures such as eutectic graphite observed.
虫ず片状黒鉛鋳鉄組成を有する溶湯のS含有量を低位に
規制したので、ハブ部とロータ部との境界に材質劣化層
が生じることがない。これが本発明の極めて大きな特徴
である。Since the S content of the molten metal having the scaly graphite cast iron composition is regulated to a low level, no material deterioration layer is formed at the boundary between the hub portion and the rotor portion. This is an extremely important feature of the present invention.
また砂型鋳型を用いたため溶湯が急冷されずロータ部は
普通鋳鉄として最も好ましい片状黒鉛組織を得ることが
で鯵るものである。Furthermore, since a sand mold was used, the molten metal was not rapidly cooled, and the rotor part was able to obtain a flaky graphite structure, which is the most preferable for ordinary cast iron.
さらに第1図においてロータ空隙部2に注入された片状
黒鉛組成を有する溶湯が800 〜1.140℃の半凝
固状態にある時点でハブ空隙部3に球状黒鉛組織組成を
有する溶湯を注入するため、双方の溶湯が混流する恐れ
はなく、しかも明らかな境界面を形成することはなく完
全な溶着融合をなすものである。Further, in FIG. 1, when the molten metal having a flaky graphite composition injected into the rotor cavity 2 is in a semi-solidified state at 800 to 1.140°C, the molten metal having a spheroidal graphite composition is injected into the hub cavity 3. Therefore, there is no fear that the two molten metals will mix together, and moreover, they will not form an obvious boundary surface and will be completely welded and fused.
第4図はハブ部をパーミキエラ黒鉛組織となしロータ部
を片状黒鉛組織としたハブ付ロータの境界部の組織を示
すものであり、共晶黒鉛等の材質劣化層は全く認められ
ない。FIG. 4 shows the structure of the boundary part of a hub-equipped rotor in which the hub part has a permiquierla graphite structure and the rotor part has a flake graphite structure, and no material deterioration layer such as eutectic graphite is observed.
以上の説明で明らかなように本発明による製造法によっ
て得られたハブ付ロータは、ハブ部に球状黒鉛組織及び
/又はバーミキュラ黒鉛組織を有し、ロータ部及びその
近傍は正常な片状黒鉛組織となっており、さらにその境
界部には共晶黒鉛などの材質劣化部を生ずることなく、
プレー午用ハブ付ロータとして外わめて優れた特性を有
するものである。As is clear from the above description, the hub-equipped rotor obtained by the manufacturing method of the present invention has a spheroidal graphite structure and/or a vermicular graphite structure in the hub portion, and a normal flaky graphite structure in the rotor portion and its vicinity. Furthermore, there is no material deterioration such as eutectic graphite at the boundary,
It has extremely excellent characteristics as a rotor with a hub for playing.
すなわち、片状黒鉛組織を有するロータ部は、熱伝導率
、耐摩耗性が良好であり、かつ減衰能が太き(ブレーキ
材として要求されるすべての特性を満足し得るばかりで
なく、ハブ部は球状黒鉛組織部c//又はバーミキュ2
黒鉛組織であるため機械的性質がトわめて良好である。In other words, the rotor part having a flaky graphite structure has good thermal conductivity and wear resistance, and has a large damping capacity (not only can it satisfy all the characteristics required for a brake material, but also has good thermal conductivity and abrasion resistance). is spheroidal graphite structure part c//or Vermicu 2
Since it has a graphite structure, its mechanical properties are very good.
従って、従来のブレーキ材と比較して肉厚の減少による
重量軽減、耐用寿命の増大、品質の向上、安全性の向上
、製造原価の低減など工業的にきわめて優れた効果を有
すねものである。Therefore, compared to conventional brake materials, it has extremely superior industrial effects such as weight reduction due to reduced wall thickness, increased service life, improved quality, improved safety, and reduced manufacturing costs. .
【図面の簡単な説明】
第1図は本発明のハブ付ロータを製造するための鈎型の
一例を示す断面図、第2.3,4.5図はともに金属組
織の顕微鏡写真である。
1 :砂型鋳型、 2 :ロータ空隙部、 3 :ハブ
空隙部、4,5 :湯口
代理人 弁理士 本 間 崇低 ATヅ
相rr 1で7
r4’ 7 Q
xto。
シロ゛ J に1
xto。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view showing an example of a hook shape for manufacturing a rotor with a hub according to the present invention, and FIGS. 2.3 and 4.5 are both microscopic photographs of the metal structure. 1: Sand mold, 2: Rotor cavity, 3: Hub cavity, 4, 5: Gate agent Patent attorney Takayoshi Honma ATzu phase rr 1 in 7 r4' 7 Q xto. 1xto Shiloh J.
Claims (2)
鉛組織となし、ロータ部を片状黒鉛組織とせる複合一体
型のハブ付ロータにおいて、上記片状黒鉛組織部のS含
有量を0.015重量%以下に規制したことを特徴とす
るハブ付ロータ。(1) In a composite integrated rotor with a hub in which the hub part has a spheroidal graphite structure and/or a vermicular graphite structure and the rotor part has a flaky graphite structure, the S content of the flaky graphite structure part is set to 0.015. A rotor with a hub that is regulated to less than % by weight.
鉛組織となし、ロータ部を片状黒鉛組織とせる複合一体
型のハブ付ロータを製作するにあたり、S含有量を0.
015重量%以下に規制した片状黒鉛鋳鉄組成を有する
溶湯を砂型鋳型のロータ空隙部に所望量注湯し、該溶湯
の温度が800〜1,140℃にある時点で球状黒鉛鋳
鉄又はバーミキュラ黒鉛鋳鉄組成を有する溶湯を上記鋳
型のハブ空隙部に注湯することを特徴とするハブ付ロー
タの製造法。(2) When manufacturing a composite integrated rotor with a hub in which the hub part has a spheroidal graphite structure and/or vermicular graphite structure and the rotor part has a flaky graphite structure, the S content is set to 0.
A desired amount of molten metal having a flake graphite cast iron composition regulated to 0.015% by weight or less is poured into the rotor cavity of a sand mold, and when the temperature of the molten metal is 800 to 1,140°C, spheroidal graphite cast iron or vermicular graphite is poured. A method for manufacturing a rotor with a hub, characterized by pouring molten metal having a cast iron composition into the hub cavity of the mold.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12538184A JPS616248A (en) | 1984-06-20 | 1984-06-20 | Rotor provided with hub and its manufacture |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12538184A JPS616248A (en) | 1984-06-20 | 1984-06-20 | Rotor provided with hub and its manufacture |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS616248A true JPS616248A (en) | 1986-01-11 |
Family
ID=14908724
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12538184A Pending JPS616248A (en) | 1984-06-20 | 1984-06-20 | Rotor provided with hub and its manufacture |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS616248A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62192250A (en) * | 1986-02-19 | 1987-08-22 | Kiriyuu Kikai Kk | Method and apparatus for rotary casting of composite material |
DE102004056331A1 (en) * | 2004-11-22 | 2006-05-24 | Georg Fischer Fahrzeugtechnik Ag | Ductile cast iron alloy and method for producing castings from nodular cast iron alloy |
JP2010189706A (en) * | 2009-02-18 | 2010-09-02 | Kurimoto Ltd | Spheroidal graphite cast iron tube and method for producing the same |
-
1984
- 1984-06-20 JP JP12538184A patent/JPS616248A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62192250A (en) * | 1986-02-19 | 1987-08-22 | Kiriyuu Kikai Kk | Method and apparatus for rotary casting of composite material |
JPH049627B2 (en) * | 1986-02-19 | 1992-02-20 | ||
DE102004056331A1 (en) * | 2004-11-22 | 2006-05-24 | Georg Fischer Fahrzeugtechnik Ag | Ductile cast iron alloy and method for producing castings from nodular cast iron alloy |
JP2010189706A (en) * | 2009-02-18 | 2010-09-02 | Kurimoto Ltd | Spheroidal graphite cast iron tube and method for producing the same |
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