JPH0318605A - Method and device for injecting metallic sodium into hollow engine valve - Google Patents
Method and device for injecting metallic sodium into hollow engine valveInfo
- Publication number
- JPH0318605A JPH0318605A JP1149522A JP14952289A JPH0318605A JP H0318605 A JPH0318605 A JP H0318605A JP 1149522 A JP1149522 A JP 1149522A JP 14952289 A JP14952289 A JP 14952289A JP H0318605 A JPH0318605 A JP H0318605A
- Authority
- JP
- Japan
- Prior art keywords
- container
- metallic sodium
- hollow
- valve
- sodium
- 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.)
- Granted
Links
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 title claims abstract description 61
- 229910052708 sodium Inorganic materials 0.000 title claims abstract description 61
- 239000011734 sodium Substances 0.000 title claims abstract description 61
- 238000000034 method Methods 0.000 title claims description 12
- 239000007787 solid Substances 0.000 claims abstract description 18
- 239000007789 gas Substances 0.000 claims abstract description 17
- 238000010438 heat treatment Methods 0.000 claims abstract description 16
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910001873 dinitrogen Inorganic materials 0.000 claims abstract description 11
- 239000011261 inert gas Substances 0.000 claims abstract description 10
- 229910052751 metal Inorganic materials 0.000 claims description 22
- 239000002184 metal Substances 0.000 claims description 22
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- 239000007788 liquid Substances 0.000 abstract description 3
- 230000003412 degenerative effect Effects 0.000 abstract 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 2
- 229910001948 sodium oxide Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000012312 sodium hydride Substances 0.000 description 1
- 229910000104 sodium hydride Inorganic materials 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D18/00—Pressure casting; Vacuum casting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/16—Casting in, on, or around objects which form part of the product for making compound objects cast of two or more different metals, e.g. for making rolls for rolling mills
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は，中空エンジンバルブへ金属ナトリウムを注入
する方法及びその装置に関する．〔従来の技術〕
自動車等の内燃機関用の吸排気弁として、内部を中空と
し，そこに冷却媒体として金属ナトリウムを封入してお
くことにより、弁頭部から弁軸部への熱伝達効率を高め
、弁頭部の冷却効果を向上するとともに、軽量化を図っ
た金属ナトリウム封入型の中空エンジンバルブが知られ
ている（例えば特開昭５８−１８５９１７号公報参照）
．このような中空エンジンバルブに、冷却媒体としての
金属ナトリウムを注入する従来の方法及び装置としては
、例えば第２図乃至第４図に示すようなものがある．
この従来の技術は，第２図に示すシリンダ（ａ）内に、
固体金属ナトリウム（ｂ）を充填した後、シリンダ（ａ
）の上端よりプレスロンド（ｃ）を押し込むことにより
、固体金属ナトリウム（ｂ）を圧縮して、シリンダ（ａ
）の下部に設けたノズル（ｄ）より押し出し，第４図に
示す中空エンジンバルブ（６）の中空部（５）の内径よ
り小径の金属ナトリウムの棒状体（ｇ）を或形する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method and apparatus for injecting metallic sodium into hollow engine valves. [Prior art] As intake and exhaust valves for internal combustion engines such as automobiles, the interior is hollow and metallic sodium is filled as a cooling medium to improve heat transfer efficiency from the valve head to the valve stem. A hollow engine valve filled with metallic sodium is known, which improves the cooling effect of the valve head and reduces weight (for example, see Japanese Patent Application Laid-Open No. 185917/1983).
．． Conventional methods and devices for injecting metallic sodium as a cooling medium into such hollow engine valves include, for example, those shown in FIGS. 2 to 4. In this conventional technology, in the cylinder (a) shown in FIG.
After filling the solid metal sodium (b), the cylinder (a
), the solid metal sodium (b) is compressed by pushing the press iron (c) from the upper end of the cylinder (a
) is extruded through a nozzle (d) provided at the bottom of the hollow engine valve (6) to form a rod-shaped body (g) of metallic sodium having a diameter smaller than the inner diameter of the hollow part (5) of the hollow engine valve (6) shown in FIG.
次に、第３図に示すように、この棒状体（ｇ）を，中空
エンジンバルブ（ｓ）の中空部（ｆ）の長さに基づいて
定めた適当な長さ，例えば中空部（ｆ）の長さの約３分
の２の長さ（氾）となるように、カッター（ｈ）により
順次切断する．
次いで、この長さ（息）とした金属ナトリウムの棒状体
（ｇ）を、第４図に示すように、ピンセット等の把持手
段（ｉ）により把持して、中空エンジンバルブ（６）の
軸端の開口部より、中空部（ｆ）内に挿入する．
しかる後、中空エンジンバルブ（ｅ）の軸端の開口部を
，適宜の閉塞体（図示略）をもって閉塞し、金属ナトリ
ウムの棒状体（ｇ）を中空部（ｆ）内に密封する。Next, as shown in FIG. Sequentially cut with a cutter (h) so that the length is approximately two-thirds of the length of the length. Next, as shown in FIG. 4, the metal sodium rod-shaped body (g) of this length is held by gripping means (i) such as tweezers and attached to the shaft end of the hollow engine valve (6). Insert it into the hollow part (f) through the opening. Thereafter, the opening at the shaft end of the hollow engine valve (e) is closed with a suitable closing body (not shown), and the metal sodium rod (g) is sealed in the hollow part (f).
このようにして形威された中空エンジンバルブ（８）は
、エンジンの作動時の熱により、金属ナトリウムの棒状
体（ｇ）が溶融され、かつこれがエンジンバルブ作動時
の振動により，中空部（ｆ）内において躍動させられ、
中空エンジンバルブ（ｅ）の弁頭部（ｊ）の熱を，弁軸
部（ｋ）へ迅速に伝達し，かつ弁軸部（ｋ）から弁軸ガ
イド（図示略）を通して放散させることができる．
〔発明が解決しようとする課題〕
上述のような従来の方法及び装置によると、固体金属ナ
トリウム（ｂ）をシリンダ（ａ）内に充填するまで，及
び棒状体（ｇ）とした金属ナトリウムを中空エンジンバ
ルブ（ｅ）の中空部（ｆ）内に挿入するまでの間に、金
属ナトリウムの表面に、空気中に含まれる酸素や水分と
反応して生或された酸化ナトリウム，水酸化ナトリウム
，水素化ナトリウム等の変質層が形或され、この変質層
が除去されることなく，そのまま中空エンジンバルブ（
ｅ）の中空部（ｆ）内に挿入されるおそれがある．この
変質層の生或物質は、エンジンパルブの作動温度（約１
００℃〜８００℃）において、固体であったり、熱伝達
の悪い物質であったり、又は熱によって分解され、中空
部（ｆ）の内圧を上昇する性質を有するものであったり
する。The hollow engine valve (8) formed in this way is formed by melting the metallic sodium rod (g) due to the heat generated during engine operation, and by the vibrations generated when the engine valve is operated. ) is made to move within,
The heat of the valve head (j) of the hollow engine valve (e) can be quickly transferred to the valve stem (k) and dissipated from the valve stem (k) through the valve stem guide (not shown). ．． [Problems to be Solved by the Invention] According to the conventional method and apparatus as described above, until the solid metallic sodium (b) is filled into the cylinder (a), and the metallic sodium in the form of a rod-shaped body (g) is Before it is inserted into the hollow part (f) of the engine valve (e), sodium oxide, sodium hydroxide, and hydrogen are formed on the surface of the metal sodium by reacting with oxygen and moisture contained in the air. An altered layer of sodium chloride, etc. is formed, and this altered layer is not removed and is inserted into the hollow engine valve (
There is a risk that it may be inserted into the hollow part (f) of e). The material forming this altered layer is generated at the operating temperature of the engine valve (approximately 1
00° C. to 800° C.), it may be a solid, a substance with poor heat transfer, or a material that is decomposed by heat and has the property of increasing the internal pressure of the hollow portion (f).
その結果，これらの生或物質により，封入された金属ナ
トリウムの弁作動時の流動が妨げられて，弁頭部から弁
軸部への熱の速やかな移動が阻害されたり，中空部（ｆ
）の内圧が異常に上昇して、中空エンジンバルブ（ｅ）
の肉薄部が破裂し，そこから金属ナトリウムが噴出する
等のおそれがある。As a result, these substances impede the flow of the enclosed metal sodium during valve operation, inhibiting the rapid transfer of heat from the valve head to the valve stem, and preventing the flow of the enclosed metal sodium from the valve head to the valve stem.
) due to an abnormal increase in the internal pressure of the hollow engine valve (e).
There is a risk that the thin wall part of the tube will rupture and metallic sodium will spew out from there.
また、金属ナトリウムの棒状体（ｇ）をカッター（ｈ）
により切断する際に，棒状体（ｇ）が折れ曲がったり、
切断部分が変形したりし、中空エンジンパルブ（ｅ）の
中空部（ｆ）へ棒状体（ｇ）を円滑に挿入できなかった
り、挿入不能となる等のおそれがある。In addition, a rod-shaped body (g) of metallic sodium is cut using a cutter (h).
When cutting, the rod-shaped body (g) may be bent or
There is a risk that the cut portion may be deformed and the rod-shaped body (g) cannot be smoothly inserted into the hollow portion (f) of the hollow engine valve (e), or may become impossible to insert.
本発明は、従来の技術が有する上記のような問題点を解
決した中空エンジンバルブへの金属ナトリウム注入方法
及びその装置を提供することを目的としている．
〔課題を解決するための手段〕
上記目的を達成するため、本発明の中空エンジンバルブ
への金属ナトリウム注入方法は，容器内に固体金属ナト
リウムを入れた後，前記容器を密閉し、かつ内部に不活
性ガス又は窒素ガスを充填して、容器内を適宜の圧力に
維持し、次いで容器内の固体金属ナトリウムを加熱する
ことにより溶融させた後、容器内の溶融した金属ナトリ
ウムを、容器の下部に接続したノズルより，中空エンジ
ンバルブ内へ注入することを特徴としている．また，本
発明の中空エンジンバルプへの金属ナトリウム注入装置
は、開閉可能な密閉蓋を備える容器と，該容器内に不活
性ガス又は窒素ガスを供給するガス供給手段と，前記容
器のまわりに配設され、かつ容器を通してその内部の金
属ナトリウムを溶融温度以上に加熱する加熱手段と，前
記容器の下部に，接続管を介して接続され，かつ容器内
の溶融した金属ナトリウムを中空エンジンバルブに注入
するノズルと，前記接続管に設けられた開閉弁とを備え
ることを特徴としている。An object of the present invention is to provide a method and apparatus for injecting metallic sodium into a hollow engine valve, which solves the above-mentioned problems of the conventional technology. [Means for Solving the Problems] In order to achieve the above object, the method for injecting metallic sodium into a hollow engine valve of the present invention is such that, after filling a container with solid metallic sodium, the container is hermetically sealed and the inside of the valve is filled with metallic sodium. The inside of the container is maintained at an appropriate pressure by filling with inert gas or nitrogen gas, and then the solid metallic sodium in the container is heated and melted, and then the molten metallic sodium in the container is poured into the lower part of the container. It is characterized by being injected into the hollow engine valve from a nozzle connected to the . Further, the apparatus for injecting metallic sodium into a hollow engine valve of the present invention includes a container having an openable and closable airtight lid, a gas supply means for supplying inert gas or nitrogen gas into the container, and a gas supply means arranged around the container. heating means for heating the metallic sodium inside the container to a temperature higher than its melting temperature through the container; and a heating means connected to the lower part of the container via a connecting pipe, and for injecting the molten metallic sodium in the container into the hollow engine valve. The present invention is characterized in that it includes a nozzle that is connected to the connecting pipe, and an on-off valve provided on the connecting pipe.
本発明の方法及び装置によると、固体金属ナトリウムは
、容器内において、不活性ガス又は窒素ガスの雰囲気下
で加熱されることにより溶融し、このとき固体金属ナト
リウムの表面等に生成されていた変質層は溶融金属ナト
リウムの液面上に浮上する。According to the method and apparatus of the present invention, solid metallic sodium is melted by being heated in an atmosphere of inert gas or nitrogen gas in a container, and at this time, the deterioration that has occurred on the surface of the solid metallic sodium The layer floats above the surface of the molten sodium metal.
この状態で，容器の下部に接続されたノズルより、容器
内の溶融金属ナトリウムを中空エンジンバルブに注入す
ると、液面上に浮上した変質層は中空エンジンバルブ内
に注入されることはない。In this state, when the molten metal sodium in the container is injected into the hollow engine valve from a nozzle connected to the bottom of the container, the altered layer floating on the liquid surface will not be injected into the hollow engine valve.
第１図は、本発明の中空エンジンバルブへの金属ナトリ
ウム注入装置の一実施例を示す．（１）は、断熱材料よ
りなる支持筒で、その内側には、シーズヒータ等の加熱
手段（２）を埋設した熱伝導率のよい材料よりなる加熱
筒（３）が設けられている。FIG. 1 shows an embodiment of the apparatus for injecting metallic sodium into a hollow engine valve according to the present invention. (1) is a support tube made of a heat insulating material, and inside thereof is provided a heating tube (3) made of a material with good thermal conductivity in which a heating means (2) such as a sheathed heater is embedded.
加熱筒（３）の上部には、上端開口部を密閉蓋（４）を
もって開閉しうるようにした有底筒状の容器（５）が設
けられている。密閉蓋（４）は、ボルト（６）を締付け
ることにより、容器（５）の上端開口部を密閉しうるよ
うになっている．
密閉蓋（４）には，リリーフ弁（７）及び圧力計（８）
を備えるガス管（９）の一端が、容器（５）内に連通ず
るように貫設され、ガス管（９）の他端は、不活性ガス
又は窒素ガス等のガスボンベ（図示諮）に接続されてい
る．リリーフ弁（７）、圧力計（８）、ガス管（９）及
びガスボンベ等により，ガス供給手段（ＩＯ）が形成さ
れている。A bottomed cylindrical container (5) whose upper end opening can be opened and closed with an airtight lid (4) is provided at the top of the heating cylinder (3). The sealing lid (4) can seal the upper end opening of the container (5) by tightening the bolt (6). The sealing lid (4) is equipped with a relief valve (7) and a pressure gauge (8).
One end of a gas pipe (9) equipped with a gas pipe (9) is installed so as to communicate with the inside of the container (5), and the other end of the gas pipe (9) is connected to a gas cylinder (not shown) such as an inert gas or nitrogen gas. It has been done. A gas supply means (IO) is formed by a relief valve (7), a pressure gauge (8), a gas pipe (9), a gas cylinder, and the like.
容器（５）の底部はロート状をなし、その適所には熱電
対等よりなる温度センサ（１１）が設けられている．
容器（５）の下端中央には、電磁弁とした開閉弁（１２
）を備える接続管（１３）が接続され，接続管（１３）
の下端には，継手（１４）を介して、下向きのノズル（
ｌ５）が接続されている．
支持筒（１）の下方には，内部に中空部（１６）を有し
、この中空部（ｌ６）が軸端側に開口するようにした半
製品である中空エンジンバルブ（以下中空弁という）（
１７）を載置して昇降するようにしたワーク保持台（ｌ
８）が設けられている．
（Ｉ９）は，２ｌｉ度センサ（１１）の作動に基づいて
，加熱手段（２）の作動を制御するとともに、開閉弁（
ｌ２）の開閉時期を制御する制御装置である。The bottom of the container (5) is funnel-shaped, and a temperature sensor (11) made of a thermocouple or the like is provided at a suitable location. At the center of the lower end of the container (5) is an on-off valve (12
) is connected to the connecting pipe (13).
A downward nozzle (
l5) is connected. Below the support cylinder (1) is a hollow engine valve (hereinafter referred to as a hollow valve) which is a semi-finished product and has a hollow part (16) inside, and this hollow part (16) opens toward the shaft end side. (
17) on which the workpiece holding table (l) is placed and moves up and down.
8) is provided. (I9) controls the operation of the heating means (2) based on the operation of the 2li degree sensor (11), and also controls the on-off valve (
This is a control device that controls the opening/closing timing of 12).
次に，上記装置を用いて，本発明の中空エンジンバルブ
への金属ナトリウム注入方怯を実施する際の要領につい
て説明する。Next, the procedure for carrying out the injection of metallic sodium into the hollow engine valve of the present invention using the above-mentioned apparatus will be explained.
まず、ボルト（６）を外して、密閉蓋（４）を開いた後
、容器（５）内に固体金属ナトリウム（図示略）を，容
器（５）の上部に若干の空間が残る程度に入れる。First, remove the bolt (6) and open the airtight lid (4), then pour solid metallic sodium (not shown) into the container (5) until there is some space left at the top of the container (5). .
次に，容器（５）の上端開口部を密閉Ｍ（４）により閉
塞して，ボルト（６）を締付けた後、リリーフ弁（７）
を開いて，不活性ガス又は窒素ガスを、ガス管（９）を
介して容器（５）内に充填する。このときの容器（５）
内のガス圧は，例えば２〜４ ｋｇ／ｄ程度に維持する
のがよい．
次に加熱手段（２）に通電してこれを作動させ、容器（
５）内を、金属ナトリウムの溶融温度以上である例えば
１００℃〜１２０℃程度まで昇温し，かつその温度に維
持する．
すると、固体金属ナトリウムは溶融して、溶融金属ナト
リウム（２０）となる。このとき、固体金属ナトリウム
の表面等に生成されていた酸化ナトリウム、水酸化ナト
リウム、水素化ナトリウム等の変質層は，溶融金属ナト
リウム（２０）の液面上に浮上する．
この状態で、ワーク保持台（ｌ８）上に中空弁（１７）
を載置し、かつノズル（ｌ５）が中空弁（１７）の中空
部（１６）の開口部に所要量進入するまで上昇させた後
、開閉弁（１２）を予め定めた時間だけ開くと、溶融金
属ナトリウム（２０）は一定量だけ、ノズル（ｌ５）よ
り中空弁（１７）の中空部（１６）内に注入される．そ
の後、速やかに，ワーク保持台（１８）を下降し，中空
弁（１７）を次工程に搬送した後、そこで中空弁（１７
）の軸端を適宜の手段で閉塞し、溶融金属ナトリウム（
２０）を中空部（１６）内に密封する．次に、新たな中
空弁（ｌ７）をワーク保持台（１８）上に載置して上昇
し、以下上記と同様に開閉弁（１２）を一定時間開くこ
とにより、１容融金属ナトリウム（２０）をノズル（１
５）より中空弁（１７）の中空部（１６）に注入する作
業をくり返す。Next, the upper end opening of the container (5) is closed with a seal M (4), and after tightening the bolt (6), the relief valve (7) is closed.
The container (5) is filled with inert gas or nitrogen gas through the gas pipe (9). Container at this time (5)
It is best to maintain the gas pressure inside the tank at, for example, 2 to 4 kg/d. Next, the heating means (2) is energized to operate it, and the container (
5) Raise the temperature of the inside to a temperature above the melting temperature of metallic sodium, for example, about 100°C to 120°C, and maintain it at that temperature. Then, the solid metal sodium melts and becomes molten metal sodium (20). At this time, the altered layer of sodium oxide, sodium hydroxide, sodium hydride, etc. that had been generated on the surface of the solid sodium metal floats to the surface of the molten metal sodium (20). In this state, the hollow valve (17) is placed on the work holding table (l8).
is placed and raised until the nozzle (l5) enters the opening of the hollow part (16) of the hollow valve (17) by the required amount, and then the on-off valve (12) is opened for a predetermined time. A fixed amount of molten metal sodium (20) is injected into the hollow part (16) of the hollow valve (17) through the nozzle (15). Thereafter, the work holding table (18) is immediately lowered and the hollow valve (17) is transported to the next process, where the hollow valve (17) is transported to the next process.
) is closed by an appropriate means, and the molten metal sodium (
20) is sealed inside the hollow part (16). Next, a new hollow valve (17) is placed on the workpiece holding table (18) and lifted up, and the opening/closing valve (12) is opened for a certain period of time in the same manner as described above. ) to the nozzle (1
5) Repeat the process of injecting into the hollow part (16) of the hollow valve (17).
なお、ノズル（１５）及び中空弁（ｌ７）のまわりの雰
囲気を不活性ガス又は窒素ガスとしておき、この雰囲気
下で溶融金属ナトリウム（２０）の注入作業を行なうと
ともに，次工程における中空弁（ｌ７）の軸端の閉塞作
業をも，不活性ガス又は窒素ガス雰囲気下で行なうのが
よい．
このような方法及び装置により、中空弁（１７）の中空
部（１６）に溶融金属ナトリウム（２０）を注入して密
封すると、容器（５）内の溶融金属ナトリウム（２０）
の液面上に浮上した変質層が中空弁（１７）内に注入さ
れることはない．
〔発明の効果〕
本発明の方法及び装置によると、金属ナトリウムを中空
エンジンバルブに注入するまでに金属ナトリウムの表面
に生威された変質層が、中空エンジンバルブ内に注入さ
れるおそれを著しく減少することができるとともに、注
入作業を迅速に、効率よく行なうことができ、しかも作
業の自動化が容易である等の利点がある．Note that the atmosphere around the nozzle (15) and the hollow valve (l7) is set to inert gas or nitrogen gas, and the molten metal sodium (20) is injected in this atmosphere. ) It is best to perform the work of closing the shaft end under an inert gas or nitrogen gas atmosphere. With such a method and device, when molten metal sodium (20) is injected into the hollow part (16) of the hollow valve (17) and sealed, the molten metal sodium (20) in the container (5)
The altered layer floating on the liquid surface will not be injected into the hollow valve (17). [Effects of the Invention] According to the method and apparatus of the present invention, the possibility that a degraded layer formed on the surface of metallic sodium before the metallic sodium is injected into the hollow engine valve is significantly reduced. In addition, it has the advantages of being able to perform injection work quickly and efficiently, and that it is easy to automate the work.
第１図は、本発明の装置の一実施例の縦断正面図，
第２図は、従来の方法に用いる固体金属ナトリウム押出
し装置の縦断正面図、
第３図は、従来の方法における金属ナトリウムの棒状体
の切断時の情況を示す正面図、第４図は，同じく金属ナ
トリウムの棒状体を中空エンジンバルブの中空部に挿入
するときの情況を示す正面図である．
（１）支持筒 （２）加熱手段（３）加熱筒
（４）密閉蓋（５）容器 （
６）ボルト（７）リリーフ弁 （８）圧力計（９
）ガス管 （１０）ガス供給手段（１１）温
度センサ （１２）開閉弁（１３）接続管
（１４）継手（ｌ５）ノズル （ｌ６
〉中空部（ｌ７）中空エンジンバルブ（中空弁）（１８
）ワーク保持台 （ｌ９）制御装置（２０）溶融金
属ナトリウムFIG. 1 is a longitudinal sectional front view of an embodiment of the apparatus of the present invention, FIG. 2 is a longitudinal sectional front view of a solid metal sodium extrusion apparatus used in a conventional method, and FIG. FIG. 4 is a front view showing the situation when the rod-shaped body is cut, and FIG. 4 is a front view showing the situation when the metal sodium rod-shaped body is inserted into the hollow part of the hollow engine valve. (1) Support cylinder (2) Heating means (3) Heating cylinder (4) Airtight lid (5) Container (
6) Bolt (7) Relief valve (8) Pressure gauge (9
) Gas pipe (10) Gas supply means (11) Temperature sensor (12) Open/close valve (13) Connection pipe
(14) Joint (l5) Nozzle (l6
〉Hollow part (l7) Hollow engine valve (hollow valve) (18
) Work holding table (l9) Control device (20) Molten metal sodium
Claims (2)
器を密閉し、かつ内部に不活性ガス又は窒素ガスを充填
して、容器内を適宜の圧力に維持し、次いで容器内の固
体金属ナトリウムを加熱することにより溶融させた後、
容器内の溶融した金属ナトリウムを、容器の下部に接続
したノズルより、中空エンジンバルブ内へ注入すること
を特徴とする中空エンジンバルブへの金属ナトリウム注
入方法。(1) After putting solid metal sodium into a container, the container is sealed, and the inside is filled with inert gas or nitrogen gas to maintain the inside of the container at an appropriate pressure, and then the solid metal inside the container is After melting the sodium by heating,
A method for injecting metallic sodium into a hollow engine valve, which comprises injecting molten metallic sodium in a container into the hollow engine valve from a nozzle connected to the lower part of the container.
手段と、 前記容器のまわりに配設され、かつ容器を通してその内
部の金属ナトリウムを溶融温度以上に加熱する加熱手段
と、 前記容器の下部に、接続管を介して接続され、かつ容器
内の溶融した金属ナトリウムを中空エンジンバルブに注
入するノズルと、 前記接続管に設けた開閉弁 とを備えることを特徴とする中空エンジンバルブへの金
属ナトリウム注入装置。(2) a container equipped with an airtight lid that can be opened and closed; a gas supply means for supplying an inert gas or nitrogen gas into the container; and a gas supply means arranged around the container and melting the metallic sodium therein through the container. a heating means for heating above temperature; a nozzle connected to the lower part of the container via a connecting pipe and for injecting molten metal sodium in the container into the hollow engine valve; and an on-off valve provided in the connecting pipe. A device for injecting metallic sodium into a hollow engine valve, characterized in that it comprises:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1149522A JP2670529B2 (en) | 1989-06-14 | 1989-06-14 | Method and apparatus for injecting metallic sodium into hollow engine valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1149522A JP2670529B2 (en) | 1989-06-14 | 1989-06-14 | Method and apparatus for injecting metallic sodium into hollow engine valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0318605A true JPH0318605A (en) | 1991-01-28 |
| JP2670529B2 JP2670529B2 (en) | 1997-10-29 |
Family
ID=15476978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1149522A Expired - Lifetime JP2670529B2 (en) | 1989-06-14 | 1989-06-14 | Method and apparatus for injecting metallic sodium into hollow engine valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2670529B2 (en) |
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|---|---|---|---|---|
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| WO2011104923A1 (en) | 2010-02-26 | 2011-09-01 | 三菱重工業株式会社 | Method for producing metallic-sodium-filled engine valve |
| WO2011142287A1 (en) | 2010-05-12 | 2011-11-17 | 三菱重工業株式会社 | Method for producing engine valve in which sodium metal is sealed |
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|---|---|---|---|---|
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| WO2011104912A1 (en) | 2010-02-26 | 2011-09-01 | 三菱重工業株式会社 | Method for producing metallic-sodium-filled engine valve |
| WO2011104923A1 (en) | 2010-02-26 | 2011-09-01 | 三菱重工業株式会社 | Method for producing metallic-sodium-filled engine valve |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP2670529B2 (en) | 1997-10-29 |
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