JPH03142058A - Method for casting by embedding - Google Patents
Method for casting by embeddingInfo
- Publication number
- JPH03142058A JPH03142058A JP28245389A JP28245389A JPH03142058A JP H03142058 A JPH03142058 A JP H03142058A JP 28245389 A JP28245389 A JP 28245389A JP 28245389 A JP28245389 A JP 28245389A JP H03142058 A JPH03142058 A JP H03142058A
- Authority
- JP
- Japan
- Prior art keywords
- small
- diameter pipe
- aluminum alloy
- outer peripheral
- peripheral surface
- 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
- 238000005266 casting Methods 0.000 title claims description 19
- 238000000034 method Methods 0.000 title claims description 6
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 29
- 229910052751 metal Inorganic materials 0.000 claims abstract description 12
- 239000002184 metal Substances 0.000 claims abstract description 12
- 230000008018 melting Effects 0.000 claims abstract description 9
- 238000002844 melting Methods 0.000 claims abstract description 9
- 230000002093 peripheral effect Effects 0.000 claims abstract description 9
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 abstract description 11
- 238000007747 plating Methods 0.000 abstract description 11
- 230000003628 erosive effect Effects 0.000 abstract description 4
- 238000000576 coating method Methods 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000003754 machining Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000000956 alloy Substances 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 239000010407 anodic oxide Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000009365 direct transmission Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、例えば車両の制御に用いられる電磁バルブボ
ディ等の鋳包み鋳造方法に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method for casting an electromagnetic valve body used, for example, in the control of a vehicle.
従来の技術
周知のように、自動車のアンチス牛ツドブレーキ装置な
どに用いられる電磁バルブにあっては、バルブボディが
アルミ合金材で成形されていると共に、該バルブボディ
の内部にブレーキ液等を流通させる油通路やエア抜き通
路等が形成されている。As is well known in the art, in electromagnetic valves used in automobile anti-slip brake systems, the valve body is molded from an aluminum alloy material, and brake fluid, etc. is allowed to flow inside the valve body. Oil passages, air bleed passages, etc. are formed.
そして、斯かるバルブボディ内に油通路等を形成する従
前の方法としては、バルブボディを鋳造した後に該バル
ブボディの所定個所にドリル等で孔開は加工し、孔の一
端部にボールや先端テーパ状の栓体を打ち込んで閉塞す
るようになっていた。The conventional method for forming oil passages, etc. in such a valve body is to first cast the valve body, then drill holes at predetermined locations on the valve body, and then drill a ball or tip into one end of the hole. It was designed to be closed by inserting a tapered plug.
しかし、このドリルによる孔開は加工や栓体等の打ち込
み作業が極めて煩雑であり、製造作業能率が著しく低下
し、また、孔開けや打ち込み等の大きな加工荷重により
バルブボディに鐸割れ等が発生し易くなるなどの問題が
あった。However, drilling holes with this drill requires extremely complicated machining and driving of plugs, etc., which significantly reduces manufacturing efficiency, and also causes cracks in the valve body due to the heavy processing load of drilling and driving. There were problems such as making it easier to do so.
そこで、バルブボディを金型鋳造する際に、該バルブボ
ディと同材質のアルミ合金製の小径パイプを一体に鋳ぐ
るんで該小径パイプで油通路等を形成することも行なわ
れている。Therefore, when mold-casting the valve body, a small-diameter pipe made of an aluminum alloy made of the same material as the valve body is integrally cast to form an oil passage, etc. with the small-diameter pipe.
発明が解決しようとする課題
然し乍ら、従来にあっては、小径パイプがバルブボディ
と同材質のアルミ合金製であるため、鋳造中においてア
ルミ合金溶湯の高熱で小径パイプが侵食、溶解して油通
路の内径が不均一となったり、潰れてしまう虞がある。However, in the past, the small-diameter pipe was made of aluminum alloy, the same material as the valve body, so during casting, the small-diameter pipe eroded and melted due to the high heat of the molten aluminum alloy, and the oil passage was damaged. There is a risk that the inner diameter of the tube may become uneven or it may collapse.
課題を解決するための手段
本発明は、前記従来の実情に鑑みて案出されたもので、
とりわけアルミ合金本体の鋳造前にアルミ合金製小径パ
イプの外周面に例えばニッケルメッキやクロムメツキ等
のアルミ合金より高融点の金属による皮膜処理を施した
ことを特徴としている。Means for Solving the Problems The present invention was devised in view of the above-mentioned conventional situation, and
In particular, it is characterized in that the outer peripheral surface of the small-diameter aluminum alloy pipe is coated with a metal having a higher melting point than the aluminum alloy, such as nickel plating or chrome plating, before casting the aluminum alloy main body.
作用
前記構成の本発明によれば、本体の鋳造時において、ア
ルミ合金溶湯が小径パイプの外周面に接触してもその外
周面の硬質皮膜によってアルミ合金製の小径パイプ自体
に対する溶湯熱の直接的な伝達が遮断され、外周面の侵
食や溶解が抑制される。この結果、小径パイプの内径の
不均一化や潰れを防止できる。According to the present invention having the above structure, even when the molten aluminum alloy comes into contact with the outer circumferential surface of the small diameter pipe during casting of the main body, the hard coating on the outer circumferential surface prevents the heat of the molten metal from directly reaching the small diameter pipe made of aluminum alloy itself. transmission is blocked, and erosion and dissolution of the outer peripheral surface are suppressed. As a result, it is possible to prevent the inner diameter of the small-diameter pipe from becoming uneven and from collapsing.
実施例
以下、本発明の実施例を図面に基づいて詳述する。尚、
本実施例もアンチスキッドブレーキ装置に用いられる電
磁バルブのバルブボディの鋳造方法に適用したものであ
る。EXAMPLES Hereinafter, examples of the present invention will be described in detail based on the drawings. still,
This embodiment is also applied to a method for casting a valve body of an electromagnetic valve used in an anti-skid brake device.
すなわち、図中１は下型、２は上型、３は両型１．２の
間に形成された断面路コ字形のキャビティ、４は略Ｍ字
形に屈曲形成されたアルミ合金製の小径パイプであって
、この小径パイプ４は、両端部４ａ、４ｂが下型ｌの突
部５上端に垂直方向から穿設された一対の位置決め孔１
ａ、ｌｂ内に挿通支持されて全体がキャビティ３の内部
所定位置にセットされている。That is, in the figure, 1 is a lower mold, 2 is an upper mold, 3 is a cavity with a U-shaped cross section formed between both molds 1.2, and 4 is a small diameter pipe made of aluminum alloy bent into an approximately M shape. This small diameter pipe 4 has both ends 4a and 4b formed by a pair of positioning holes 1 perpendicularly drilled into the upper end of the protrusion 5 of the lower die l.
The whole body is inserted into and supported within the cavities 3 and set at a predetermined position inside the cavity 3.
また、この小径パイプ４の外周面全体には、アルミ合金
より融点温度の高いクロムメツキ皮膜６が施されている
。Further, the entire outer circumferential surface of the small diameter pipe 4 is coated with a chrome plating film 6 having a higher melting point than aluminum alloy.
前記上型２は、−側部内にアルミ合金溶湯をキャビティ
３内に注入する注湯ロアが形成されていると共に、上部
中央に押湯口８が形成されている。The upper mold 2 has a pouring lower for injecting molten aluminum alloy into the cavity 3 in the negative side thereof, and a feeder port 8 in the center of the upper part.
尚、型温度やアルミ合金溶湯温度及び凝固温度等は、ク
ロムメツキ皮膜６の存在によって小径パイプ４の溶解温
度以下となるように予め特別に管理されている。Note that the mold temperature, the temperature of the molten aluminum alloy, the solidification temperature, etc. are specially controlled in advance to be below the melting temperature of the small diameter pipe 4 due to the presence of the chrome plating film 6.
そして、斯かる鋳造金型装置で鋳造作業を行なうには、
予めクロムメツキ皮膜６が施された小径パイプ４をまず
前述のようにキャビティ３内の所定位置にセットしてお
く。次に、注湯ロアからアルミ合金溶湯９をキャビティ
３内に所定の速度で注入すると、該アルミ合金溶湯９が
キャビティ３内で流動して小径パイプ４の外周面に接触
しつつ鋳ぐるみを開始する。この際、小径パイプ４は、
クロムメツキ皮膜６によってパイプ４自体に対する溶湯
熱の直接的な伝達が遮断される。したがって、小径パイ
プ４の外周面に対する高熱による侵食が抑制されると共
に、全体の溶解も阻止される。In order to perform casting work with such a casting mold device,
The small-diameter pipe 4, which has been previously coated with a chrome plating film 6, is first set at a predetermined position within the cavity 3 as described above. Next, when the molten aluminum alloy 9 is injected into the cavity 3 from the pouring lower at a predetermined speed, the molten aluminum alloy 9 flows in the cavity 3 and starts casting while coming into contact with the outer peripheral surface of the small diameter pipe 4. do. At this time, the small diameter pipe 4 is
The chrome plating film 6 blocks direct transmission of molten metal heat to the pipe 4 itself. Therefore, erosion of the outer circumferential surface of the small diameter pipe 4 due to high heat is suppressed, and melting of the entire pipe is also prevented.
この結果、小径パイプ４の断面円形形状が保持され、均
一径の油通路を形成することができる。As a result, the circular cross-sectional shape of the small-diameter pipe 4 is maintained, and an oil passage with a uniform diameter can be formed.
しかも、クロムメツキ皮膜６は、ミクロン単位の薄さで
あるから、凝固時におけるアルミ合金溶湯９との大きな
熱膨張差が発生せず、溶着性も良好となる。Furthermore, since the chrome plating film 6 is as thin as microns, a large difference in thermal expansion from the molten aluminum alloy 9 does not occur during solidification, and the weldability is also good.
また、小径パイプ４とバルブボディ成形体１０が同材質
のアルミ合金であるため、鋳造後の機械加工作業が容易
であるばかりか全体の軽量化が図れる。Moreover, since the small diameter pipe 4 and the valve body molded body 10 are made of the same material, aluminum alloy, not only is the machining work after casting easy, but the weight of the whole can be reduced.
尚、本実施例では、小径パイプ４の外周面にクロムメツ
キを施したが、ニッケルメッキやその他硬質陽極酸化皮
膜で表面処理することも可能である。この場合は、溶湯
温度等の温度条件を改めて設定する。In this embodiment, the outer peripheral surface of the small-diameter pipe 4 is plated with chrome, but it is also possible to perform surface treatment with nickel plating or other hard anodic oxide coatings. In this case, temperature conditions such as molten metal temperature are set again.
本発明は、バルブボディの製造方法に限定されるもので
はない。The present invention is not limited to a method of manufacturing a valve body.
発明の効果
以上の説明で明らかなように、本発明に係る鋳包み鋳造
方法によれば、小径パイプの外周面にアルミ合金より高
融点の金属による皮膜処理を施したため、アルミ合金本
体の鋳造時におけるアルミ合金溶湯の小径パイプに対す
る直接的な伝熱が効果的に遮断され、小径パイプの高熱
による侵食や溶解が防止される。この結果、パイプ肉厚
を厚くすることなく小径パイプによる均一径の油通路等
を形成することができる。Effects of the Invention As is clear from the above explanation, according to the cast-in casting method according to the present invention, since the outer peripheral surface of the small diameter pipe is coated with a metal having a higher melting point than the aluminum alloy, it is possible to reduce the temperature when casting the aluminum alloy body. Direct heat transfer of the molten aluminum alloy to the small diameter pipe is effectively blocked, and corrosion and melting of the small diameter pipe due to high heat is prevented. As a result, it is possible to form an oil passage with a uniform diameter using a small-diameter pipe without increasing the pipe wall thickness.
尚、本体と小径パイプとを同材質のアルミ合金で形成し
たため、鋳造後における機械加工作業が容易になると共
に、アルミ合金部材の軽量化が図れることば勿論である
。Since the main body and the small-diameter pipe are made of the same aluminum alloy material, machining work after casting is facilitated, and the weight of the aluminum alloy member can be reduced.
図は本発明に供される鋳造金型装置を示す断面図である
。
４・・・小径パイプ、６・・・クロムメ・ツキ皮膜（金
属皮膜）、９・・・アルミ合金溶湯、１０・・・ノクル
フホティ成形体（本体）。
！
４・・小径パイプ
ロ・・・クロムメツキ皮膜
９・・・アルミ合金廖湯
０・・・バルブボディ成形体The figure is a sectional view showing a casting mold device used in the present invention. 4...Small diameter pipe, 6...Chrome coating (metal coating), 9...Aluminum alloy molten metal, 10...Noklufhoti molded body (main body). ! 4...Small diameter pipe...Chrome plating film 9...Aluminum alloy coating 0...Valve body molded body
Claims (1)
パイプを鋳ぐるむ鋳包み鋳造方法において、前記本体の
鋳造前に前記小径パイプの外周面にアルミ合金よりも融
点の高い金属による皮膜処理を施したことを特徴とする
鋳包み鋳造方法。(1) In a cast-in casting method in which a small-diameter pipe made of aluminum alloy is cast in the casting of an aluminum alloy main body, the outer peripheral surface of the small-diameter pipe is coated with a metal having a higher melting point than the aluminum alloy before casting the main body. A cast-in casting method characterized by the following.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28245389A JPH03142058A (en) | 1989-10-30 | 1989-10-30 | Method for casting by embedding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28245389A JPH03142058A (en) | 1989-10-30 | 1989-10-30 | Method for casting by embedding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03142058A true JPH03142058A (en) | 1991-06-17 |
Family
ID=17652625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28245389A Pending JPH03142058A (en) | 1989-10-30 | 1989-10-30 | Method for casting by embedding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03142058A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05154638A (en) * | 1991-12-10 | 1993-06-22 | Nakamura Kinzoku Kogyosho:Kk | Cast-in pipe casting method |
| JPH05293626A (en) * | 1992-04-16 | 1993-11-09 | Izumi Ind Ltd | Manufacture of brake calliper |
| JPH09144924A (en) * | 1995-11-27 | 1997-06-03 | Hazu Kogyo Kk | Manufacture of valve casing |
| JPH11285808A (en) * | 1998-04-02 | 1999-10-19 | Nippon Light Metal Co Ltd | Inserting method in casting |
| JP2012520774A (en) * | 2009-03-17 | 2012-09-10 | イスパノ・シユイザ | Molded casing with additional piping |
-
1989
- 1989-10-30 JP JP28245389A patent/JPH03142058A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05154638A (en) * | 1991-12-10 | 1993-06-22 | Nakamura Kinzoku Kogyosho:Kk | Cast-in pipe casting method |
| JPH05293626A (en) * | 1992-04-16 | 1993-11-09 | Izumi Ind Ltd | Manufacture of brake calliper |
| JPH09144924A (en) * | 1995-11-27 | 1997-06-03 | Hazu Kogyo Kk | Manufacture of valve casing |
| JPH11285808A (en) * | 1998-04-02 | 1999-10-19 | Nippon Light Metal Co Ltd | Inserting method in casting |
| JP2012520774A (en) * | 2009-03-17 | 2012-09-10 | イスパノ・シユイザ | Molded casing with additional piping |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6058803A (en) | Hollow bicycle crank and method for manufacturing same | |
| BRPI0612788A2 (en) | insert casting, cylinder liner, cylinder block and cylinder liner manufacturing method | |
| EP1116536B1 (en) | An internal chill casting method for manufacturing a cast product containing a pipe therein | |
| EP0550583B1 (en) | Production of complex cavities inside castings or semi solid forms | |
| KR100686532B1 (en) | Partition plate for intake port, sand core for forming intake port, and cylinder head | |
| JP2986585B2 (en) | Method of manufacturing cast parts made from aluminum or aluminum alloy and having integrated channels | |
| JPH03142058A (en) | Method for casting by embedding | |
| US5050665A (en) | Investment cast airfoil core/shell lock and method of casting | |
| GB2052329A (en) | A cast disc brake caliper body and a method of forming a fluid duct therein | |
| JPH0760399A (en) | Metal mold structure for casting | |
| EP1000687B1 (en) | Machinable cast-in-place tube enclosure fittings | |
| US20050173091A1 (en) | Method and apparatus for manufacturing strong thin-walled castings | |
| US11326485B2 (en) | Method of manufacture and design of cast-in-place valve seats | |
| JPS60184460A (en) | Method for embedding aluminum pipe by casting | |
| US3118225A (en) | Method of casting | |
| JPH0399767A (en) | Method for manufacturing internal chilling piping in casting metallic mold | |
| JP2004268061A (en) | Cooling structure for core pin, and casting method using the structure | |
| JPH11291017A (en) | Aluminum cast product and production thereof | |
| JPS60227964A (en) | Production of piston | |
| JP3339503B2 (en) | Mold for cast-in pipe | |
| JPH03142057A (en) | Method for casting by embedding | |
| Lampman | Permanent mold casting of aluminum alloys | |
| JPS591496B2 (en) | Method for casting a casting having a hollow tubular part | |
| JP3036302B2 (en) | Casting pins for casting | |
| JP2008221313A (en) | Hollow member, and its production method |