JP2973145B2 - Ventilated disc and core - Google Patents
Ventilated disc and coreInfo
- Publication number
- JP2973145B2 JP2973145B2 JP3355427A JP35542791A JP2973145B2 JP 2973145 B2 JP2973145 B2 JP 2973145B2 JP 3355427 A JP3355427 A JP 3355427A JP 35542791 A JP35542791 A JP 35542791A JP 2973145 B2 JP2973145 B2 JP 2973145B2
- Authority
- JP
- Japan
- Prior art keywords
- core
- annular member
- ventilated
- ventilated disc
- casting
- 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 - Fee Related
Links
- 239000000843 powder Substances 0.000 claims description 13
- 238000005266 casting Methods 0.000 claims description 11
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 8
- 239000011230 binding agent Substances 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 8
- 238000000576 coating method Methods 0.000 claims description 8
- 239000003085 diluting agent Substances 0.000 claims description 8
- 230000002093 peripheral effect Effects 0.000 claims description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 7
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 239000000853 adhesive Substances 0.000 claims description 4
- 230000001070 adhesive effect Effects 0.000 claims description 4
- 239000000395 magnesium oxide Substances 0.000 claims description 4
- 239000003960 organic solvent Substances 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 3
- 239000003292 glue Substances 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000003112 inhibitor Substances 0.000 claims description 3
- 235000019353 potassium silicate Nutrition 0.000 claims description 3
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 3
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 229910052845 zircon Inorganic materials 0.000 claims description 3
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 claims description 3
- 238000013016 damping Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 239000003110 molding sand Substances 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910001060 Gray iron Inorganic materials 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
Landscapes
- Braking Arrangements (AREA)
- Mold Materials And Core Materials (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ベンチレーテッドディ
スクおよびベンチレーテッドディスク鋳造用中子に関す
るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilated disc and a ventilated disc casting core.
【０００２】[0002]
【従来の技術】ベンチレーテッドディスク鋳造用中子と
して、外周部幅木と内周部幅木と前記両幅木間に設けら
れた中子部とからなり、さらに該中子部と同心的に配設
され、かつ該中子部を貫通する環状部材を備えたものが
ある（例えば、米国特許Ｎｏ．５００４０７８のＦｉｇ
１８〜１９）。2. Description of the Related Art A core for ventilated disc casting comprises an outer peripheral skirting board, an inner peripheral skirting board, and a core provided between the two skirting boards, and further concentric with the core. And provided with an annular member penetrating the core portion (for example, FIG. 5 of US Patent No. 5004078).
18-19).
【０００３】[0003]
【発明が解決しようとする課題】上記中子を用いてベン
チレーテッドディスクを鋳造すると、環状部材がベンチ
レーテッドディスクのディスク本体と同心的に、かつ該
リブを貫通するように配設され、環状部材とリブとの間
に微小な隙間が形成される。該ベンチレーテッドディス
クはベンチレーテッドディスク振動時には、環状部材と
リブとがその摩擦力に抗して微小な相対振動を繰り返
し、運動エネルギーを熱エネルギーに変換してベンチレ
ーテッドディスクの振動を減衰している。しかし、環状
部材とリブとの間に形成される微小な隙間幅が異なる
と、減衰効果に著しい差異が見られる。本発明者は種々
の実験を行い、本発明に至ったものであり、減衰効果の
良好なベンチレーテッドディスクおよびベンチレーテッ
ドディスク鋳造用中子を提供するものである。When a ventilated disc is cast using the above-mentioned core, an annular member is disposed concentrically with the disc body of the ventilated disc and penetrates the rib, A minute gap is formed between the annular member and the rib. When the ventilated disc vibrates, the annular member and the rib repeat minute relative vibrations against the frictional force of the ventilated disc and convert kinetic energy into heat energy to attenuate the ventilated disc vibration. doing. However, when the width of the minute gap formed between the annular member and the rib is different, a remarkable difference is seen in the damping effect. The present inventor has conducted various experiments and arrived at the present invention, and provides a ventilated disc having a good damping effect and a ventilated disc casting core.
【０００４】[0004]
【課題を解決するための手段】本発明は、ディスク本体
と同心的に配設され、かつリブを貫通する環状部材を備
えたベンチレーテッドディスクにおいて、該環状部材と
該リブとの間に隙間が形成され、半径方向および軸心方
向の各隙間幅の各合計が０．０５〜０．１５ｍｍである
ことを特徴とする。さらに、外周部幅木と内周部幅木と
前記両幅木間に設けられた中子部とからなり、さらに該
中子部と同心的に配設され、かつ該中子部を貫通する環
状部材を備えたベンチレーテッドディスク鋳造用中子に
おいて、溶着防止剤からなる厚さ０．０２５〜０．０７
５ｍｍの被膜を該環状部材に設けたことを特徴とし、溶
着防止剤が骨材、バインダーおよび希釈剤から形成さ
れ、該骨材としては酸化けい素粉末、黒鉛、アルミナ粉
末、滑石粉末、ジルコン粉末、マグネシア粉末の１種ま
たは２種以上が用いられ、該バインダーとしては水ガラ
ス、糊、有機系接着剤の１種または２種以上が用いら
れ、該希釈剤としては有機溶剤または水が用いられる。SUMMARY OF THE INVENTION The present invention relates to a ventilated disc having an annular member which is provided concentrically with the disk body and penetrates a rib, wherein a gap is provided between the annular member and the rib. Are formed, and the total of the respective gap widths in the radial direction and the axial direction is 0.05 to 0.15 mm. Furthermore, it is composed of an outer peripheral skirting board, an inner peripheral skirting board, and a core portion provided between the two skirting boards, further disposed concentrically with the core portion, and penetrating the core portion. In a ventilated disk casting core having an annular member, a thickness of 0.025-0.07
A coating having a thickness of 5 mm is provided on the annular member, wherein the anti-fusing agent is formed from an aggregate, a binder and a diluent, and the aggregate includes silicon oxide powder, graphite, alumina powder, talc powder, zircon powder. And one or more of magnesia powders are used. As the binder, one or more of water glass, glue, and organic adhesive are used, and as the diluent, an organic solvent or water is used. .
【０００５】[0005]
【作用】環状部材にあらかじめ溶着防止剤を塗布して厚
さ０．０２５〜０．０７５ｍｍの被膜を作っておくこと
により該環状部材がディスク本体に溶着されることはな
く、しかも該被膜が除去されると、該環状部材とリブと
の間に微小な隙間が形成され、ベンチレーテッドディス
ク振動時には、該環状部材と該リブとがその摩擦力に抗
して微小な相対振動を繰り返し、運動エネルギーが熱エ
ネルギーに変換される。The annular member is prevented from being welded to the disk body by previously applying a welding inhibitor to the annular member to form a coating having a thickness of 0.025 to 0.075 mm, and the coating is removed. As a result, a minute gap is formed between the annular member and the rib, and when the ventilated disk vibrates, the annular member and the rib repeat minute relative vibrations against the frictional force, thereby causing motion. Energy is converted to heat energy.
【０００６】[0006]
【実施例】図１〜２に本発明のベンチレーテッドディス
クおよびベンチレーテッドディスク鋳造用中子が示さ
れ、ベンチレーテッドディスクにおいては、環状部材１
がディスク本体２と同心的に配設され、かつリブ３を貫
通し、環状部材１とリブ３との間に微小な隙間が形成さ
れ、該隙間は環状部材１に形成された厚さ０．０２５〜
０．０７５ｍｍの被膜を除去した後に形成され、半径方
向および軸心方向の各隙間幅の各合計が０．０５〜０．
１５ｍｍに形成される。ベンチレーテッドディスク振動
時には環状部材１とリブ３とがその摩擦力に抗して微小
な相対振動を繰り返し、運動エネルギーが熱エネルギー
に変換されて、ベンチレーテッドディスクの振動が減衰
させられ鳴きの発生が防止される。1 and 2 show a ventilated disc and a core for casting a ventilated disc according to the present invention. In the ventilated disc, an annular member 1 is shown.
Are arranged concentrically with the disk body 2 and penetrate the ribs 3 so that a minute gap is formed between the annular member 1 and the rib 3. 025-
It is formed after the 0.075 mm film is removed, and the total of each gap width in the radial direction and the axial direction is 0.05 to 0.5 mm.
It is formed to 15 mm. When the ventilated disc vibrates, the annular member 1 and the rib 3 repeat minute relative vibrations against the frictional force, and the kinetic energy is converted into heat energy, so that the vibration of the ventilated disc is attenuated and the squeal is generated. The occurrence is prevented.
【０００７】ベンチレーテッドディスク鋳造用中子は、
外周部幅木４ａと内周部幅木４ｂと前記両幅木４ａ、４
ｂ間に設けられた中子部４ｃとからなり、溶着防止剤を
塗布して厚さ０．０２５〜０．０７５ｍｍの被膜を形成
した環状部材１が、中子部４ｃと同心的に配設され、か
つ中子部４ｃを貫通する。上記溶着防止剤が骨材、バイ
ンダーおよび希釈剤から形成され、該骨材としては酸化
けい素粉末、黒鉛、アルミナ粉末、滑石粉末、ジルコン
粉末、マグネシア粉末の１種または２種以上が用いら
れ、該バインダーとしては水ガラス、糊、有機系接着剤
の１種または２種以上が用いられ、該希釈剤としては有
機溶剤または水が用いられる。上記溶着防止剤は該骨材
および該バインダーをそれぞれ混合し、該希釈剤で希釈
した後、環状部材１に塗布する。The core for ventilated disc casting is
Outer peripheral skirting board 4a, inner peripheral skirting board 4b, and both skirting boards 4a, 4
An annular member 1 comprising a core portion 4c provided between the members b and having a coating having a thickness of 0.025 to 0.075 mm formed by applying an anti-fusing agent is disposed concentrically with the core portion 4c. And penetrates the core 4c. The anti-welding agent is formed from an aggregate, a binder, and a diluent, and the aggregate includes one or more of silicon oxide powder, graphite, alumina powder, talc powder, zircon powder, and magnesia powder, As the binder, one or more of water glass, glue, and organic adhesive are used, and as the diluent, an organic solvent or water is used. The adhesion inhibitor mixes the aggregate and the binder respectively, dilutes with the diluent, and applies to the annular member 1.
【０００８】ディスク本体２はねずみ鋳鉄等から形成さ
れ、環状部材１はＳＵＳ材、ＳＳ材、焼結材等から形成
される。また、中子は通常の有機中子砂、無機中子砂等
から形成される。The disk body 2 is formed from gray cast iron or the like, and the annular member 1 is formed from a SUS material, an SS material, a sintered material or the like. The core is formed from ordinary organic core sand, inorganic core sand and the like.
【０００９】上記中子を鋳型内の所定位置に配置した
後、注湯してベンチレーテッドディスクを鋳造する。そ
の後、ショットで鋳物砂を落し、ディスク面２ａを切削
加工すると、環状部材１が鋳包まれたベンチレーテッド
ディスクが得られる。After the core is placed at a predetermined position in a mold, the core is poured to cast a ventilated disc. Thereafter, the molding sand is dropped by a shot, and the disk surface 2a is cut, whereby a ventilated disk in which the annular member 1 is cast-in is obtained.
【００１０】次に具体例を説明する。骨材として酸化マ
グネシア粉末、バインダーとして、有機系接着剤、希釈
剤として有機溶剤を用いて溶着防止剤を調整した後、該
溶着防止剤をＳＵＳ４３０製環状部材１に塗布して被膜
を形成する。環状部材１は被膜厚さが０〜０．０７５ｍ
ｍまでのものを数種類作製する。その後、上記環状部材
１を備えた有機中子砂製中子を砂型内の所定位置に配置
し、鋳鉄溶湯（ＦＣ２０）を注湯してベンチレーテッド
ディスクを鋳造する。次いで、ショットで鋳物砂を落
し、ディスク面２ａを切削加工すると、環状部材１が鋳
包まれたベンチレーテッドディスクが得られる。Next, a specific example will be described. After adjusting the anti-fusing agent using magnesia oxide powder as an aggregate, an organic adhesive as a binder, and an organic solvent as a diluent, the anti-fusing agent is applied to the SUS430 annular member 1 to form a coating. The annular member 1 has a coating thickness of 0 to 0.075 m
Several types up to m are produced. Thereafter, the core made of organic core sand provided with the annular member 1 is placed at a predetermined position in a sand mold, and a molten cast iron (FC20) is poured to cast a ventilated disc. Next, the molding sand is dropped by a shot, and the disk surface 2a is cut, whereby a ventilated disk in which the annular member 1 is cast-in is obtained.
【００１１】図３に上記環状部材１の被膜厚さとベンチ
レーテッドディスクの減衰率との関係が示され、被膜厚
さが０．０２５〜０．０７５ｍｍの時、ベンチレーテッ
ドディスクが良好な減衰効果を示すことがわかる。FIG. 3 shows the relationship between the film thickness of the annular member 1 and the attenuation rate of the ventilated disk. When the film thickness is 0.025 to 0.075 mm, the ventilated disk has good attenuation. It turns out that it shows an effect.
【００１２】[0012]
【発明の効果】本発明によれば、減衰効果の良好なベン
チレーテッドディスクが得られ、ブレーキ制動時に発生
する鳴きが防止される。しかも、環状部材が通気孔内を
貫通しているので、通気孔内を流通する空気によって強
制空冷され、環状部材がリブと一体結合することはな
く、ダンピング機能が低下することがない。According to the present invention, a ventilated disc having a good damping effect can be obtained, and the squeal generated during braking can be prevented. In addition, since the annular member penetrates through the ventilation hole, it is forcibly air-cooled by the air flowing through the ventilation hole, and the annular member is not integrally connected to the rib, so that the damping function does not decrease.
【図１】本発明に係るベンチレーテッドディスクの正面
図FIG. 1 is a front view of a ventilated disc according to the present invention.
【図２】本発明に係るベンチレーテッドディスク鋳造用
中子の正面図FIG. 2 is a front view of a ventilated disk casting core according to the present invention.
【図３】被膜厚さと減衰率との関係を示すグラフFIG. 3 is a graph showing the relationship between coating thickness and attenuation rate.
１ 環状部材 ２ ディスク本体 ３ リブ ４ｃ 中子部 Reference Signs List 1 annular member 2 disk body 3 rib 4c core
Claims (3)
リブを貫通する環状部材を備えたベンチレーテッドディ
スクにおいて、該環状部材と該リブとの間に隙間が形成
され、半径方向および軸心方向の各隙間幅の各合計が
０．０５〜０．１５ｍｍであることを特徴とするベンチ
レーテッドディスク。1. A ventilated disc having an annular member disposed concentrically with a disk body and penetrating a rib, wherein a gap is formed between the annular member and the rib, and a radial direction and an axial direction are provided. A ventilated disc characterized in that the sum of the respective gap widths in the center direction is 0.05 to 0.15 mm.
に設けられた中子部とからなり、さらに該中子部と同心
的に配設され、かつ該中子部を貫通する環状部材を備え
たベンチレーテッドディスク鋳造用中子において、溶着
防止剤からなる厚さ０．０２５〜０．０７５ｍｍの被膜
を該環状部材に設けたことを特徴とするベンチレーテッ
ドディスク鋳造用中子。2. An outer peripheral skirting board, an inner peripheral skirting board, and a core portion provided between the two skirting boards, further disposed concentrically with the core portion, and the core portion. A ventilated disk casting core provided with an annular member penetrating through, wherein a coating having a thickness of 0.025 to 0.075 mm made of a welding inhibitor is provided on the annular member. Core for casting.
ク鋳造用中子において、溶着防止剤が骨材、バインダー
および希釈剤から形成され、該骨材としては酸化けい素
粉末、黒鉛、アルミナ粉末、滑石粉末、ジルコン粉末、
マグネシア粉末の１種または２種以上が用いられ、該バ
インダーとしては水ガラス、糊、有機系接着剤の１種ま
たは２種以上が用いられ、該希釈剤としては有機溶剤ま
たは水が用いられることを特徴とするベンチレーテッド
ディスク鋳造用中子。3. The core for ventilated disk casting according to claim 2, wherein the anti-fusing agent is formed of an aggregate, a binder, and a diluent, and the aggregate includes silicon oxide powder, graphite, alumina powder, Talc powder, zircon powder,
One or more magnesia powders are used, and one or more of water glass, glue, and organic adhesive are used as the binder, and an organic solvent or water is used as the diluent. A core for ventilated disc casting, characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3355427A JP2973145B2 (en) | 1991-11-25 | 1991-11-25 | Ventilated disc and core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3355427A JP2973145B2 (en) | 1991-11-25 | 1991-11-25 | Ventilated disc and core |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05138294A JPH05138294A (en) | 1993-06-01 |
| JP2973145B2 true JP2973145B2 (en) | 1999-11-08 |
Family
ID=18443891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3355427A Expired - Fee Related JP2973145B2 (en) | 1991-11-25 | 1991-11-25 | Ventilated disc and core |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2973145B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4991089B2 (en) * | 2001-07-27 | 2012-08-01 | フレニ・ブレンボ エス・ピー・エー | Process for producing a brake band of a brake disc having a ventilation duct and brake band produced by this process |
| JP3975435B2 (en) * | 2002-01-18 | 2007-09-12 | 日立金属株式会社 | Cast-in member with excellent damping capacity |
| JP4946956B2 (en) * | 2008-04-04 | 2012-06-06 | サンスター技研株式会社 | Noise reduction brake disc |
-
1991
- 1991-11-25 JP JP3355427A patent/JP2973145B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05138294A (en) | 1993-06-01 |
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