WO2012086315A1

WO2012086315A1 - Method for producing engine valve containing metallic sodium, and metallic sodium supply apparatus

Info

Publication number: WO2012086315A1
Application number: PCT/JP2011/075409
Authority: WO
Inventors: 西　敏郎
Original assignee: 三菱重工業株式会社
Priority date: 2010-12-24
Filing date: 2011-11-04
Publication date: 2012-06-28
Also published as: JP2012136979A

Abstract

This method for producing an engine valve containing metallic Na is a method for producing an engine valve that: has a flared valve section (13), a valve shaft section (14), and a valve shaft end section (15), of which at least the flared valve section (13) and the valve shaft section (14) are made to be hollow; and has metallic Na in the interior of the engine valve (11). The method for producing the engine valve containing metallic Na has a first metallic Na filling step (S11) for filling the interior of the flared valve section (13) in the engine valve (11) with metallic Na (12a) particles, and a second metallic Na filling step (S12) for supplying the interior of the valve shaft section (14) in the engine valve (11) with rod-shaped metallic Na.

Description

Manufacturing method of metallic sodium-containing engine valve, metallic sodium supply device

The present invention relates to a method for manufacturing a metal sodium (metal Na) -containing engine valve applied to an engine for vehicles and the like, and a metal sodium supply device.

In order to increase the output and performance of automobile engines, it is necessary to supercharge the engine with high pressure and burn a lot of fuel. When engine output is increased, there is no problem because the intake valve of the engine valve is cooled by the intake gas flowing around the valve during the intake stroke, but the exhaust valve is continuously heated by the exhaust gas. The seizure of the valve becomes a problem.

Conventionally, an engine valve is used in which the interior is hollow and metal Na is enclosed in the interior. FIG. 12 shows an example of an engine valve in which metal Na that is conventionally used is enclosed. As shown in FIG. 12, in the conventional metal Na-containing engine valve 100, the engine valve 101 has a valve cap portion 102, a valve shaft portion 103, and a valve shaft tip portion 104, and a metal Na 105 inside the engine valve 101. Is enclosed.

The engine valve 101 can be made light weight by being hollowed out, so that fuel consumption can be reduced by reducing kinetic energy loss and noise can be reduced by reducing seating noise. In addition, since the metal Na105 to be encapsulated has a low specific gravity and a low melting point and a large thermal conductivity, the heat transfer rate is increased and the valve temperature is lowered to improve the heat transfer rate and increase the combustion gas temperature. It can correspond to. Therefore, in an engine valve in which metal Na is enclosed, metal Na liquefies at a high temperature, which causes convection in the engine valve and promotes heat flow in the engine valve, so that the temperature of each part of the engine valve is averaged. As a result, problems caused by using the engine valve, such as engine valve seizure, are solved, engine valve cooling efficiency and performance are improved, and engine performance is improved (for example, see Patent Documents 1 and 2). .

The engine valve containing metal Na is manufactured by inserting rod-shaped metal Na into the hollow of the engine valve in the atmosphere, and then thermally melting and filling it. Engine valves containing such metal Na are becoming widespread for high-end cars, intermediate cars and aircraft. In particular, in recent years, automobile engines have been subject to legal regulations (for example, CAFE regulations), and have been accelerated to achieve higher efficiency, lower fuel consumption, lighter weight, and lower noise. There is a growing demand for reduction in weight and weight, and the use of engine valves containing metal Na tends to increase.

In the future, in response to the further demand for engine valves containing metal Na, an engine valve with a larger hollow volume in the bulk of the engine valve is being developed in order to achieve more stable and efficient cooling of the engine valve. Proposed.

JP 05-141214 A JP 06-49549 A

However, when the hollow volume of the bulk portion of the engine valve is expanded, the conventional method for manufacturing an engine valve containing metal Na cannot sufficiently fill the hollow portion of the bulk portion of the engine valve with metal Na. There is.

This invention is made in view of the said problem, Comprising: It aims at providing the manufacturing method of a metallic sodium containing engine valve which can be filled with metallic Na efficiently in an engine valve, and a metallic sodium supply apparatus.

A first aspect of the present invention for solving the above-described problem is an engine having a valve bulkhead, a valve shaft, and a valve shaft tip, and at least the valve bulkhead and the valve shaft are hollow. A method for producing a metallic sodium-containing engine valve having metallic sodium inside a valve, wherein at least one of or both of particulate metallic sodium and rod-shaped metallic sodium is placed inside the valve bulk portion in the engine valve. A metal sodium-containing engine valve manufacturing method comprising: a first metal sodium filling step for filling; and a second metal sodium filling step for supplying the rod-shaped metal sodium into the valve shaft portion. It is.

According to a second invention, in the first invention, the engine valve is heated by heating and melting means between the first metal sodium filling step and the second metal sodium filling step, and It is a manufacturing method of a metallic sodium-containing engine valve characterized by having a heating and dissolving step of dissolving metallic sodium supplied to the inside.

According to a third invention, in the first or second invention, before the first metal sodium filling step, titanium is attached in advance to the surface of the metal sodium, or the metal sodium is previously added to kerosene. It is a manufacturing method of a metallic sodium-containing engine valve characterized by being immersed.

According to a fourth aspect of the invention, there is provided a metallic sodium containing metallic sodium having an inner portion of an engine valve having a valve bulkhead portion, a valve shaft portion, and a valve shaft tip portion, wherein at least the valve bulkhead portion and the valve shaft portion are hollow. A metal sodium supply device for manufacturing an engine valve, wherein the first metal sodium supply unit supplies either or both of particulate metal sodium and rod-shaped metal sodium into the engine valve; and the rod-shaped metal sodium And a second metal sodium supply part for supplying particulate metal sodium in the engine valve. A storage portion and a first engine valve housing portion that houses a part of the engine valve; The um supply part has a second metal sodium storage part for storing the rod-shaped metal sodium inside the valve shaft part, and a second engine valve storage part for storing a part of the engine valve. This is a metallic sodium supply device.

According to a fifth aspect of the present invention, in the fourth aspect of the invention, there is provided the metallic sodium supply device according to the fourth aspect, further comprising an inert gas supply unit that is provided in the engine valve housing portion and supplies an inert gas into the engine valve housing portion. is there.

A sixth invention is the metallic sodium supply device according to the fourth or fifth invention, wherein the inert gas supply means further supplies an inert gas into the engine valve.

7th invention is provided in any one or both of a 1st metal sodium storage part and a 2nd metal sodium storage part in any one invention of 4th to 6th, 1st metal sodium storage Detecting means for detecting the length of metallic sodium discharged from either or both of the first and second metallic sodium reservoirs, a first metallic sodium reservoir, and a second metallic sodium reservoir And a cutting means for cutting the metal sodium discharged from any one or both of the metal sodium supply device.

An eighth invention is the metal according to any one of the fourth to seventh inventions, wherein titanium is attached to the surface of the metal sodium in advance, or the metal sodium is previously immersed in kerosene. Sodium feeder.

According to the present invention, it is possible to efficiently fill metal Na into the engine valve.

FIG. 1 is a diagram showing a method for manufacturing a metallic sodium-containing engine valve according to Embodiment 1 of the present invention. FIG. 2 is a diagram showing the configuration of the engine valve. FIG. 3 is a diagram showing a method for manufacturing a metallic sodium-containing engine valve according to Example 2 of the present invention. FIG. 4 is a diagram showing a method for manufacturing a metal Na-containing engine valve according to Example 3 of the present invention. FIG. 5 is a diagram illustrating a configuration of the metal Na supply device. FIG. 6 is a diagram showing a method for manufacturing a metal Na-containing engine valve according to Example 4 of the present invention. FIG. 7 is a diagram illustrating a configuration of the metal Na supply device. FIG. 8 is a diagram showing a method for manufacturing a metal Na-containing engine valve according to Embodiment 5 of the present invention. FIG. 9 is a diagram illustrating a configuration of the metal Na supply device. FIG. 10 is a diagram showing a method for manufacturing a metal Na-containing engine valve according to Example 6 of the present invention. FIG. 11 is a diagram illustrating a configuration of the metal Na supply device. FIG. 12 is a diagram showing an example of an engine valve in which metal Na that has been generally used is enclosed.

Hereinafter, the present invention will be described in detail with reference to the drawings. In addition, this invention is not limited by the following Example. In addition, constituent elements in the following embodiments include those that can be easily assumed by those skilled in the art, those that are substantially the same, and those in a so-called equivalent range. Furthermore, the constituent elements disclosed in the following embodiments can be appropriately combined.

A method for manufacturing a metallic sodium-containing engine valve according to Example 1 of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing a method for manufacturing a metallic sodium-containing engine valve according to Example 1 of the present invention, and FIG. 2 is a diagram showing a configuration of the engine valve. As shown in FIG. 1, the method for manufacturing a metallic sodium-containing engine valve according to the present embodiment is a first metal in which particulate metallic sodium (metal Na) 12 a is filled in the engine valve 11 in the engine valve 11. A sodium (metal Na) filling step (step S11) and a second metal Na filling step (step S12) for filling the inside of the engine valve 11 with a rod-shaped metal Na12b.

As shown in FIG. 2, the engine valve 11 has a valve bulkhead portion 13, a valve shaft portion 14, and a valve shaft tip portion 15, and the valve bulkhead portion 13 and the valve shaft portion 14 are made hollow. In the present embodiment, the engine valve 11 has the hollow valve portion 13 and the valve shaft portion 14 hollow, but the present invention is not limited to this, and the valve shaft tip portion 15 may also be hollow.

The metal Na 12a and the metal Na 12b are solid metal Na, and the metal Na 12a is filled in the valve bulkhead portion 13 of the engine valve 11. The metal Na12b is filled in the valve shaft portion 14.

The particulate metal Na12a is supplied into the engine valve 11, and the particulate metal Na12a is filled into the valve umbrella 13 (step S11). Since the metal Na12a is solid particulate metal Na, it can be filled while suppressing the formation of gaps between the metal Na12a in the internal space of the valve bulkhead portion 13. For this reason, the inside of the valve bulkhead portion 13 of the engine valve 11 can be filled with the metal Na12a.

After filling the inside of the valve bulkhead portion 13 of the engine valve 11 with metal Na12a, the metal Na12b is supplied into the engine valve 11 and the valve bulkhead portion 13 and the valve shaft portion 14 are filled with metal Na12b (step S12). Thereby, the inside of the valve | bulb umbrella part 13 and the valve-shaft part 14 can be satisfy | filled with metal Na12b.

Therefore, according to the manufacturing method of the metal Na-containing engine valve according to the present embodiment, first, the metal Na 12a is supplied to the valve bulkhead portion 13 of the engine valve 11, and then the metal Na12b is fed to the valve bulkhead portion 13 of the engine valve 11 and By supplying the valve shaft 14, the

metal Na

12 a and 12 b can be efficiently filled into the valve bulkhead 13 and the valve shaft 14 of the engine valve 11.

In the present embodiment, the metal Na12a and 12b are directly supplied to the valve cap portion 13 and the valve shaft portion 14 of the engine valve 11, but the present embodiment is not limited to this. In the first metal Na filling step and the second metal Na filling step, before the

metal Na

12a, 12b is supplied to the valve cap portion 13 and the valve shaft portion 14 of the engine valve 11, titanium is previously applied to the surfaces of the

metal Na

12a, 12b. (Ti) may be attached, or metal Na12a, 12b may be immersed in kerosene in advance. By attaching Ti to the surfaces of the metal Na12a and 12b in advance and coating the surfaces of the metal Na12a and 12b with Ti, the surface of the metal Na12a and 12b is prevented from being oxidized by reacting with air in the atmosphere. Can do. In addition, kerosene is contained as a main component in kerosene, and since the surface of metal Na12a, 12b is covered with kerosene, Ti is coated with the surfaces of metal Na12a, 12b, similarly to the case where Ti coats the surface of metal Na12a, 12b. Oxidation of the surface can be suppressed.

In the present embodiment, metal Na is supplied twice into the engine valve 11, but the present embodiment is not limited to this, and the size of the engine valve 11, the shape of the valve umbrella portion 13, In consideration of the size of the inner diameter of the valve shaft 14 and the like, the metal Na may be supplied into the engine valve 11 in three or more times.

A method for manufacturing a metallic sodium-containing engine valve according to Example 2 of the present invention will be described with reference to the drawings. FIG. 3 is a diagram showing a method for manufacturing a metallic sodium-containing engine valve according to Example 2 of the present invention. The engine valve used in the present embodiment is the same as the configuration of the engine valve according to the first embodiment of the present invention shown in FIG. 1, and therefore the same reference numerals are given to the same members as in the first embodiment. Thus, duplicate explanations are omitted. As shown in FIG. 3, the manufacturing method of the metallic sodium-containing engine valve according to the present embodiment includes the first metallic Na filling step S <b> 21 for supplying the rod-shaped metallic Na <b> 12 c, the heating of the engine valve 11, It includes a heating and melting step S22 for melting the metal Na filled therein and a second metal Na filling step S23 for supplying the rod-shaped metal Na12b.

The rod-shaped metal Na12c is supplied into the engine valve 11, and the rod-shaped metal Na12c is filled into the valve bulkhead portion 13 and the valve shaft portion 14 (step S21). Thereafter, a heating means 22 for heating the engine valve 11 is provided outside the engine valve 11 to heat the engine valve 11. Thereby, the metal Na12c supplied to the inside of the valve bulkhead portion 13 is dissolved, and the inside of the valve bulkhead portion 13 can be filled with the metal Na12c (step S22).

The heating means 22 is not particularly limited, and any heating means that can heat the engine valve 11 such as a heater or an electric furnace can be used.

After heating the engine valve 11 and filling the inside of the valve bulkhead portion 13 with metal Na12c, the rod-shaped metal Na12b is supplied into the engine valve 11 and filled with the rod-shaped metal Na12b (step S23). Thereby, the inside of the valve shaft portion 14 can be filled with the metal Na12b (step S23).

Therefore, according to the manufacturing method of the metal Na-containing engine valve according to the present embodiment, the metal Na12c first supplied to the valve bulkhead portion 13 of the engine valve 11 is heated and melted to fill the inside of the valve bulkhead portion 13 with metal Na. After that, by supplying the metal Na12b to the valve shaft portion 14 of the engine valve 11, the solid metal Na12b and 12c can be efficiently filled into the valve bulkhead portion 13 and the valve shaft portion 14 of the engine valve 11.

A method for manufacturing a metal Na-containing engine valve according to Example 3 of the present invention will be described with reference to the drawings. The method for manufacturing a metal Na-containing engine valve according to the present embodiment is to fill the engine valve with metal Na using a metal Na supply device. FIG. 4 is a diagram illustrating a method for manufacturing a metal Na-containing engine valve according to Example 3 of the present invention, and FIG. 5 is a diagram illustrating a configuration of a metal Na supply device. In addition, since the engine valve used in the present embodiment is the same as the configuration of the engine valve according to the first embodiment of the present invention, the same members as those in the first embodiment are denoted by the same reference numerals and duplicated description. Is omitted.

As shown in FIG. 4, the manufacturing method of the metallic Na-containing engine valve according to the present embodiment is the same as the manufacturing method of the metallic Na-containing engine valve according to the first embodiment of the present invention shown in FIG. That is, in the manufacturing method of the metal Na-containing engine valve according to the present embodiment, the first metal Na filling step (step) in which the particulate metal Na 12a is filled in the engine valve 11 into the valve bulkhead portion 13 of the engine valve 11 (step). S11) and a second metal Na filling step (step S12) for filling the inside of the valve shaft portion 14 using the rod-shaped metal Na12b.

(Metal Na supply device)
Metal Na12a, 12b supplies metal Na12a, 12b to the engine valve 11 using the metal Na supply apparatus 31A. As shown in FIG. 5, the metal Na supply device 31A includes a first metal Na supply unit 32-1A and a second metal Na supply unit 32-2A. The first metal Na supply unit 32-1A includes a first metal Na storage unit 33-1 and a first engine valve housing unit 34-1. The second metal Na supply unit 32-2A includes a second metal Na storage unit 33-2 and a second engine valve housing unit 34-2.

The first metal Na supply unit 32-1A supplies particulate metal Na12a into the engine valve 11. The second metal Na supply unit 32-2A supplies rod-shaped metal Na12b into the engine valve 11. The first engine valve accommodating portion 34-1 and the second engine valve accommodating portion 34-2 accommodate at least a part of the engine valve 11.

A supply hole 33a is provided in the end surfaces of the first metal Na reservoir 33-1 and the second metal Na reservoir 33-2. The supply hole 33a is formed in such a size that the metal Na12a, 12b can be currencyd. The shape of the supply hole 33a is not particularly limited, and examples thereof include a circular shape, an elliptical shape, and a rectangular shape.

The metal Na12a and 12b are supplied from the first metal Na reservoir 33-1 and the second metal Na reservoir 33-2 to the first engine valve reservoir 34-1 and the second engine valve reservoir 34-2. The method of performing is not particularly limited, and for example, ultrasonic waves are applied to the first metal Na reservoir 33-1 and the second metal Na reservoir 33-2 to provide the first metal Na reservoir 33- A control plate capable of dropping the metal Na12a, 12b in the first and second metal Na reservoirs 33-2 or opening and closing the supply hole 33a is provided, and the control means controls the open / close state of the control plate to supply holes. The

metal Na

12a and 12b in the first metal Na reservoir 33-1 and the second metal Na reservoir 33-2 may be dropped from 33a.

The metal Na supply device 31A has an inert gas supply means 36 for supplying an inert gas 35 into the first engine valve housing 34-1. The inert gas supply means 36 has inert gas supply lines L11 and L12. The inert gas supply line L11 is a line for supplying the inert gas 35 from the inert gas storage tank 37 into the first engine valve housing 34-1. The inert gas supply line L12 is a line for supplying the inert gas 35 from the inert gas storage tank 37 into the second engine valve housing 34-2. The inert gas supply means 36 supplies the inert gas 35 from the inert gas storage tank 37 via the inert gas supply line L11 into the first engine valve accommodating portion 34-1 and the inert gas supply line L12. Then, the inert gas 35 is supplied into the second engine valve housing 34-2. By supplying the inert gas 35 into the first engine valve accommodating portion 34-1 and the second engine valve accommodating portion 34-2 via the inert gas supply lines L11, L12, the first engine valve accommodating portion The air in the section 34-1 and the second engine valve housing section 34-2 can be expelled to form an inert gas atmosphere. Thereby, since it can suppress that metal Na12a, 12b contacts with air, it can suppress that the surface of metal Na12a, 12b is oxidized. Note that the supply amount of the inert gas 35 in the inert gas supply lines L11 and L12 is adjusted by the control valves V11 and V12.

The inert gas supply means 36 branches from the inert gas supply line L11, and supplies an inert gas 35 into the first engine valve housing 34-1 and an inert gas supply line. An inert gas supply line L14 that branches from L12 and supplies the inert gas 35 into the second engine valve housing 34-2 is provided. As a result, as described later, when the engine valve 11 is accommodated in the first engine valve accommodating portion 34-1 and the second engine valve accommodating portion 34-2, the inert gas 35 is introduced into the engine valve 11. Since it can supply, it can suppress that the surface of metal Na12a, 12b in the engine valve 11 is oxidized. The supply amount of the inert gas 35 into the engine valve 11 in the inert gas supply lines L11 to L14 is adjusted by the control valves V21, V22, V31, and V32.

(First metal Na filling step: step S11)
The engine valve 11 is inserted into the first engine valve housing 34-1. Thereafter, the metal Na 12a is supplied into the engine valve 11 from the supply hole 33a of the first metal Na reservoir 33-1 and filled into the valve bulkhead portion 13 of the engine valve 11. During this time, the inert gas 35 is supplied into the first engine valve housing 34-1 through the inert gas supply line L11. Further, the inert gas 35 is supplied into the engine valve 11 through the inert gas supply line L13. Thereby, it can suppress that metal Na12a supplied in the engine valve 11 is oxidized. After the engine valve 11 is filled with the metal Na12a, the engine valve 11 is extracted from the first engine valve housing 34-1.

(Second metal sodium filling step: S12)
The extracted engine valve 11 is inserted into the second engine valve housing 34-2. Thereafter, the metal Na 12b is supplied from the second metal Na reservoir 33-2 into the engine valve 11 and the valve bulk 13 of the engine valve 11 is filled with the metal Na 12b. During this time, the inert gas 35 is supplied via the inert gas supply line L12 to the second state in the same manner as when the inert gas 35 is supplied into the first engine valve housing portion 34-1 via the inert gas supply line L11. 2 is supplied into the engine valve housing 34-2. Further, the inert gas 35 is supplied into the engine valve 11 via the inert gas supply line L14. Thereby, it can suppress that metal Na12b supplied in the engine valve 11 is oxidized. After the engine valve 11 is filled with the metal Na12b, the engine valve 11 is extracted from the second engine valve housing 34-2.

Therefore, according to the manufacturing method of the metal Na-containing engine valve according to the present embodiment, the

metal Na

12a and 12b are supplied to the engine valve 11 using the metal Na supply device 31A. In contrast, the metal Na12a and 12b can be efficiently filled into the engine valve 11 at the same time in a short time.

A method for manufacturing a metal Na-containing engine valve according to Example 4 of the present invention will be described with reference to the drawings. The method for manufacturing a metal Na-containing engine valve according to the present embodiment is to fill the engine valve with metal Na using a metal Na supply device. FIG. 6 is a diagram illustrating a method for manufacturing a metal Na-containing engine valve according to Example 4 of the present invention, and FIG. 7 is a diagram illustrating a configuration of a metal Na supply device. The metal sodium supply device used in this example is the same as the configuration of the metal sodium supply device used in the method for manufacturing a metal sodium-containing engine valve according to Example 3 of the present invention shown in FIG. About the member similar to Example 3, the same code | symbol is attached | subjected and the overlapping description is abbreviate | omitted.

As shown in FIG. 6, the manufacturing method of the metallic Na-containing engine valve according to the present embodiment is the same as the manufacturing method of the metallic Na-containing engine valve according to the second embodiment of the present invention shown in FIG. That is, the manufacturing method of the metal Na-containing engine valve according to the present embodiment includes the first metal Na filling step S21 for supplying the rod-shaped metal Na12c, and the metal that heats the engine valve 11 and fills the inside of the valve bulkhead 13 It includes a heating and dissolving step S22 for dissolving Na12c and a second metal Na filling step S23 for supplying a rod-like metal Na12b.

Metal Na12b, 12c supplies metal Na12b, 12c to the engine valve 11 using the metal Na supply apparatus 31B. As shown in FIG. 7, the metal Na supply device 31B includes a first metal Na supply unit 32-1B and a second metal Na supply unit 32-2A. The first metal Na storage section 33-1 of the first metal Na supply section 32-1B supplies rod-shaped metal Na12c into the engine valve 11.

(First metal Na filling step: step S21)
The engine valve 11 is inserted into the first engine valve housing 34-1. Thereafter, the metal Na12c is supplied into the engine valve 11 from the supply hole 33a of the first metal Na reservoir 33-1. As a result, the metal Na 12 c is filled into the valve bulkhead 13 of the engine valve 11. During this time, the inert gas 35 is supplied into the first engine valve housing 34-1 through the inert gas supply line L11. Further, the inert gas 35 is supplied into the engine valve 11 through the inert gas supply line L13. Thereby, it can suppress that metal Na12c supplied in the engine valve 11 is oxidized. After the engine valve 11 is filled with the metal Na12c, the engine valve 11 is extracted from the first engine valve housing 34-1.

(Heating and dissolving step: S22)
The extracted engine valve 11 is provided with heating means 22 for heating the engine valve 11 outside the engine valve 11 to heat the engine valve 11. As a result, the metal Na12c supplied to the inside of the valve umbrella 13 is dissolved, and the inside of the valve umbrella 13 can be filled with the metal Na12c.

The heating means 22 is not particularly limited as long as it can heat the engine valve 11 as described above, and examples thereof include a heater and an electric furnace.

(Second metal Na filling step: S23)
After filling the inside of the valve umbrella 13 with the metal Na12c, the engine valve 11 is inserted into the second engine valve housing 34-2. Thereafter, in the same manner as described above, the metal Na12b is supplied from the second metal Na reservoir 33-2 into the engine valve 11, and the valve bulkhead 13 of the engine valve 11 is filled with metal Na12b. During this time, the inert gas 35 is supplied via the inert gas supply line L12 to the second state in the same manner as when the inert gas 35 is supplied into the first engine valve housing portion 34-1 via the inert gas supply line L11. 2 is supplied into the engine valve housing 34-2. Further, the inert gas 35 is supplied into the engine valve 11 via the inert gas supply line L14. Thereby, it can suppress that metal Na12b supplied in the engine valve 11 is oxidized. After the engine valve 11 is filled with the metal Na12b, the engine valve 11 is extracted from the second engine valve housing 34-2.

metal Na

12b and 12c are supplied to the engine valve 11 using the metal Na supply device 31B. At the same time, the metal Na12b and 12c can be efficiently filled into the engine valve 11 in a short time.

A method for manufacturing a metal Na-containing engine valve according to Example 5 of the present invention will be described with reference to the drawings. The method for manufacturing a metal Na-containing engine valve according to the present embodiment is to fill the engine valve with metal Na using a metal Na supply device. FIG. 8 is a diagram illustrating a method for manufacturing a metal Na-containing engine valve according to a fifth embodiment of the present invention, and FIG. 9 is a diagram illustrating a configuration of a metal Na supply device. The metal sodium supply device used in this example is the same as the configuration of the metal sodium supply device used in the method for manufacturing a metal sodium-containing engine valve according to Example 3 of the present invention shown in FIG. About the member similar to Example 3, the same code | symbol is attached | subjected and the overlapping description is abbreviate | omitted.

As shown in FIG. 8, the manufacturing method of the metallic Na-containing engine valve according to the present embodiment is the same as the manufacturing method of the metallic Na-containing engine valve according to the first embodiment of the present invention shown in FIG. That is, in the manufacturing method of the metal Na-containing engine valve according to the present embodiment, the first metal Na filling step (step) in which the particulate metal Na 12a is filled in the engine valve 11 into the valve bulkhead portion 13 of the engine valve 11 (step). S11) and a second metal Na filling step (step S12) for filling the inside of the valve shaft portion 14 with the rod-shaped metal Na12b.

Metal Na12a, 12b supplies metal Na12a, 12b to the engine valve 11 using the metal Na supply apparatus 31C. As shown in FIG. 9, the metal Na supply device 31C includes a first metal Na supply unit 32-1A and a second metal Na supply unit 32-2C.

The second metal Na storage section 33-2 of the second metal Na supply section 32-2C pushes the metal Na12 in the second metal Na storage section 33-2 against the second metal Na storage section 33-2. An extrusion member 41 is provided, and a metal Na extrusion tube 42 that extends the metal Na12 by a predetermined length from the supply hole 33a. On the wall surface of the second engine valve housing 34-2, a detection device (detection means) 43 for detecting the metal Na12 extending from the metal Na extrusion tube 42 and the metal Na12 extending from the metal Na extrusion tube 42 are cut. Cutting means 44 for the purpose. Examples of the cutting means 44 include a cutter.

The second metal Na supply unit 32-2C pressurizes the metal Na12 in the second metal Na storage unit 33-2 by the pushing member 41 and extends the metal Na12 through the metal Na extruding tube 42 by a predetermined length. Further, the metal Na12 extended from the metal Na extruded tube 42 is detected by the detection device 43 that the metal Na12 is extended by a predetermined length. A portion of the metal Na 12 extending from the metal Na extrusion tube 42 is cut by the cutting means 44. The metal Na12 cut by the cutting means 44 is supplied to the engine valve tray 11 as metal Na12b.

(First metal Na filling step: step S11)
1st metal Na filling process S11 is performed similarly to the manufacturing method of the metal sodium containing engine valve which concerns on Example 3 of this invention.

(Second metal sodium filling step: S12)
After the metal Na 12a is filled into the engine valve 11 in the first metal Na filling step S11, the engine valve 11 extracted from the first engine valve housing 34-1 is the second engine valve housing 34-2. Inserted into. Thereafter, the metal Na12 in the second metal Na reservoir 33-2 is pressurized by the extruding member 41, and the metal Na12 is extruded through the metal Na extruding tube 42 by a predetermined length. Further, when the metal Na12 is extruded from the metal Na extruding tube 42 by a predetermined length, the detection device 43 detects that the metal Na12 has been extruded by a predetermined length. Thereafter, the metal Na 12 extending from the metal Na extrusion tube 42 is cut by the cutting means 44.

The metal Na1b cut by the cutting means 44 is supplied into the engine valve 11 as metal Na12b, and the valve bulkhead portion 13 of the engine valve 11 is filled with the metal Na12b. During this time, the inert gas 35 is supplied via the inert gas supply line L12 to the second state in the same manner as when the inert gas 35 is supplied into the first engine valve housing portion 34-1 via the inert gas supply line L11. 2 is supplied into the engine valve housing 34-2. Further, the inert gas 35 is supplied into the engine valve 11 via the inert gas supply line L14. Thereby, it can suppress that metal Na12b supplied in the engine valve 11 is oxidized. After the engine valve 11 is filled with the metal Na12b, the engine valve 11 is extracted from the second engine valve housing 34-2.

Therefore, according to the method for manufacturing a metal Na-containing engine valve according to the present embodiment, the metal Na12 in the second metal Na reservoir 33-2 is accurately and precisely engineed using the metal Na supply device 31C. Since the gas can be supplied into the valve 11, the

metal Na

12 a and 12 b can be efficiently filled into the engine valve 11 simultaneously in a short time with respect to a large number of engine valves 11.

A method for manufacturing a metal Na-containing engine valve according to Example 6 of the present invention will be described with reference to the drawings. The method for manufacturing a metal Na-containing engine valve according to the present embodiment is to fill the engine valve with metal Na using a metal Na supply device. FIG. 10 is a diagram illustrating a method for manufacturing a metal Na-containing engine valve according to Example 6 of the present invention, and FIG. 11 is a diagram illustrating a configuration of a metal Na supply device. The metal sodium supply device used in this example is the same as the configuration of the metal sodium supply device used in the method for manufacturing a metal sodium-containing engine valve according to Example 4 of the present invention shown in FIG. About the member similar to Example 4, the same code | symbol is attached | subjected and the overlapping description is abbreviate | omitted.

As shown in FIG. 10, the manufacturing method of the metallic Na-containing engine valve according to the present embodiment is the same as the manufacturing method of the metallic Na-containing engine valve according to the second embodiment of the present invention shown in FIG. That is, the manufacturing method of the metal Na-containing engine valve according to the present embodiment includes the first metal Na filling step S21 for supplying the rod-shaped metal Na12c, and the metal that heats the engine valve 11 and fills the inside of the valve bulkhead 13 It includes a heat dissolution step S22 for dissolving Na and a second metal Na filling step S23 for supplying rod-shaped metal Na12b.

Metal Na12b, 12c supplies metal Na12b, 12c to engine valve 11 using metal Na supply device 31D. As shown in FIG. 11, the metal Na supply device 31D includes a first metal Na supply unit 32-1C and a second metal Na supply unit 32-2C.

The first metal Na storage unit 33-1 of the first metal Na supply unit 32-1C pushes the metal Na12 in the second metal Na storage unit 33-1 to the second metal Na storage unit 33-2. An extrusion member 41-1 to be taken out and a metal Na extrusion tube 42-1 for extending the metal Na12 by a predetermined length from the supply hole 33a are provided. On the wall surface of the first engine valve housing 34-1 are a first detection device (detection means) 43-1 for detecting the metal Na12 from the metal Na extrusion tube 42 at a predetermined length, and a metal Na extrusion tube 42. First cutting means 44-1 for cutting the extruded metal Na12 is provided.

The first metal Na supply part 32-1C pressurizes the metal Na12 in the first metal Na storage part 33-1 by the pushing member 41-1, and passes through the metal Na extrusion pipe 42-1 from the supply hole 33a. Na12 is extruded for a predetermined length. Further, when the metal Na12 is extruded from the metal Na extruding tube 42-1 by a predetermined length, the first detector 43-1 detects that the metal Na12 has been extruded by a predetermined length. The metal Na12 extruded from the metal Na extrusion tube 42-1 is cut by the first cutting means 44-1. Thereby, metal Na12c is obtained.

(First metal Na filling step: step S21)
After the engine valve 11 is inserted into the first engine valve housing 34-1, the metal Na12 in the first metal Na reservoir 33-1 is pressurized by the pushing member 41-1 to push out the metal Na from the supply hole 33a. Metal Na12 is extruded through the tube 42-1 for a predetermined length. Further, when the metal Na12 is extruded from the metal Na extruding tube 42-1 by a predetermined length, the first detector 43-1 detects that the metal Na12 has been extruded by a predetermined length. Thereafter, the metal Na12 extruded from the metal Na extrusion tube 42-1 is cut by the first cutting means 44-1. The metal Na12 cut by the first cutting means 44-1 is supplied into the engine valve 11 as the metal Na12c, and the valve bulkhead portion 13 of the engine valve 11 is filled with the metal Na12c. During this time, in the same manner as described above, the inert gas 35 is supplied into the first engine valve accommodating portion 34-1 via the inert gas supply line L11, and the inside of the engine valve accommodating portion 34-1 is changed to the inert gas atmosphere. To do. Further, the inert gas 35 is supplied into the engine valve 11 through the inert gas supply line L13. Thereby, it can suppress that metal Na12c supplied in the engine valve 11 is oxidized. After the engine valve 11 is filled with the metal Na12c, the engine valve 11 is extracted from the first engine valve housing 34-1.

(Heating and dissolving step: S22)
Heat dissolution process S22 is performed similarly to the manufacturing method of the metallic sodium containing engine valve concerning Example 4 of the present invention.

(Second metal Na filling step: S23)
2nd metal Na filling process S23 is performed similarly to the manufacturing method of the metal sodium containing engine valve which concerns on Example 4 of this invention. That is, after the engine valve 11 is inserted into the second engine valve housing 34-2, the metal Na12 in the second metal Na reservoir 33-2 is pressurized by the pushing member 41-2 to press the metal Na extruded tube 42. -Extrude metal Na12 through the inside for a predetermined length. Further, when the metal Na12 is extruded from the metal Na extruding tube 42-2 by a predetermined length, the second detector 43-2 detects that the metal Na12 has been extruded by a predetermined length. Thereafter, the metal Na12 extruded from the metal Na extrusion tube 42-2 is cut by the second cutting means 44-2. The metal Na12 cut by the second cutting means 44-2 is supplied into the engine valve 11 as metal Na12b, and the valve shaft portion 14 of the engine valve 11 is filled with the metal Na12b. During this time, as described above, the inert gas 35 is supplied into the second engine valve housing part 34-2 via the inert gas supply line L12, and the second engine valve housing part 34-2 is inerted. Use a gas atmosphere. Further, the inert gas 35 is supplied into the engine valve 11 via the inert gas supply line L14. Thereby, it can suppress that metal Na12b supplied in the engine valve 11 is oxidized. After the engine valve 11 is filled with the metal Na12b, the engine valve 11 is extracted from the second engine valve housing 34-2.

Therefore, according to the method for manufacturing the metal Na-containing engine valve according to the present embodiment, the metal Na supply unit 31D is used to store the first metal Na storage unit 33-1 and the second metal Na storage unit 33-2. Since the metal Na12 can be accurately supplied into the engine valve 11 with a predetermined length, the

metal valves

12b and 12c can be efficiently filled into the engine valve 11 simultaneously in a short time with respect to a large number of engine valves 11. Can do.

As described above, in each of the above embodiments, the case where the engine valve used in the vehicle engine is filled with the metal Na has been described. However, the present invention is not limited to this, and may be used for aircraft, etc. The same applies to the engine valve used in the engine for the mailing equipment.

11

Engine valve

12, 12a, 12b, 12c Metal sodium (metal Na)
13 Valve bulkhead portion 14 Valve shaft portion 15 Valve shaft tip portion 22 Heating means 31A to 31D Metal Na supply device 32-1A to 32-1C First metal Na supply portion 32-2A to 32-2C Second metal Na supply Part 33-1 First metal Na storage part 33-2 Second metal Na storage part 33a Supply hole 34-1 First engine valve storage part 34-2 Second engine valve storage part 35 Inert gas 36 Active gas supply means 37 Inert gas storage tank 41 Extrusion member 42 Metal Na extrusion pipe 43 Detection device (detection means)
43-1 First detection device (detection means)
43-2 Second detection device (detection means)
44 cutting means 44-1 first cutting means 44-2 second cutting means L11 to L14 inert gas supply line

Claims

A method of manufacturing a metallic sodium-containing engine valve having metallic bulk sodium inside an engine valve having a bulked valve portion, a valve shaft portion, and a valve shaft tip portion, wherein at least the valve bulk portion and the valve shaft portion are hollow. There,
A first metallic sodium filling step of filling at least one of or both of particulate metallic sodium and rod-shaped metallic sodium into the engine valve;
A second metal sodium filling step of supplying the rod-shaped metal sodium into the valve shaft portion;
A method for producing a metallic sodium-containing engine valve, comprising:
In claim 1,
Between the first metallic sodium filling step and the second metallic sodium filling step, the engine valve is heated by heating and melting means, and the heating and melting step for dissolving the metallic sodium supplied to the inside of the valve bulkhead A method for producing a metallic sodium-containing engine valve, comprising:
In claim 1 or 2,
Before the first metallic sodium filling step, titanium is attached in advance to the surface of the metallic sodium, or the metallic sodium is pre-immersed in kerosene. Manufacturing method.
Metal for producing a metal sodium-containing engine valve having metallic sodium inside an engine valve having a valve bulkhead, a valve shaft and a valve shaft tip, and at least the valve bulkhead and the valve shaft are hollow. A sodium feeder,
A first metal sodium supply section for supplying one or both of particulate metal sodium and rod-shaped metal sodium into the engine valve;
A second metal sodium supply part for supplying the rod-shaped metal sodium into the valve shaft part;
The first metallic sodium supply unit includes: a first metallic sodium storage unit that stores particulate metallic sodium in the engine valve; and a first engine valve housing unit that houses a part of the engine valve. Have
The second metal sodium supply unit includes a second metal sodium storage unit that stores the rod-shaped metal sodium in the valve shaft, and a second engine valve storage unit that stores a part of the engine valve. When,
Metal sodium supply apparatus characterized by having.
In claim 4,
A metallic sodium supply device comprising an inert gas supply means provided in the engine valve housing portion and configured to supply an inert gas into the engine valve housing portion.
In claim 4 or 5,
The metallic sodium supply apparatus, wherein the inert gas supply means further supplies an inert gas into the engine valve.
In any one of Claims 4-6,
It is provided in either one or both of the first metal sodium reservoir and the second metal sodium reservoir, and is discharged from either or both of the first metal sodium reservoir and the second metal sodium reservoir. Detection means for detecting the length of metallic sodium
Cutting means for cutting metal sodium discharged from either or both of the first metal sodium reservoir and the second metal sodium reservoir;
Metal sodium supply apparatus characterized by having.
In any one of Claims 4-7,
A metallic sodium supply device, wherein titanium is attached to the surface of the metallic sodium in advance, or the metallic sodium is previously immersed in kerosene.