JPS5945075A - Production of hermetic vacuum vessel - Google Patents

Abstract

PURPOSE:To perform simultaneously the evacuation of the inside of a hermetic vacuum vessel made of metal and brazing of a cover body in the stage of producing said vessel, by disposing plural brazing materials at some intervals between the opening face of the metallic vessel body and the cover body placed thereon, and heating the assembly in a vacuum heating furnace. CONSTITUTION:Plural brazing materials 5 are disposed on the surface in the opening 2 of a vessel 1 made of an Al alloy, etc. and gaps 6 for evacuation are formed between said materials. A cover body 3 for the vessel 1 is placed on the materials 5 and if necessary, a weight is placed thereon and the assembly is put into a vacuum heating furnace. The inside of the furnace is evacuated to evacuate the inside of the vessel 1 from the gaps 6. When the prescribed degree of vacuum is attained, the temp. of the heating furnace is elevated to melt the materials 5. The cover body 3 diffuses the molten materials 5 over the entire part between the top surface in the opening and the cover body 3 by the own weight or the weight placed thereon. The assembly is cooled to allow the brazing material to solidify, whereby the high vacuum hermetic vessel is easily produced.

Description

[Detailed Description of the Invention] This invention is based on the following examples: Li: II J14 made 1 Yoho bottle outer container, etc. ); Relates to a method of vacuuming the inside of the main body and sealing the lid AI:i with wax.

Conventionally, this type of vacuum sealed container σ) most -fI->rl
As shown in Figure 4, as shown in Figure 4, when the main body (11) is completed, I0 always becomes the base i and i: (:l -+This 1 submerged opening 1'' part (from 12I, inside the container [compacted snow-cb rJ-
After loading 12 internal parts, ``-Record 1-1'
i'Xls I12+, then put wax 4'4' (13a) on one side of the lid (13) consisting of 4'4' (13a) on one side. 'death,
Alternatively, as shown in Figure 5, Banko Link 4 Dog L Near)
Place the lid plate (13) through the placing tray (141) and heat the vacuum (J) inside the container body (11) in a multi-vacuum heating furnace
When you perform l+temperature, llj, the melting point of the brazing material will rise. However, such a conventional method (in this case, the vacuum evacuation inside the main body (11) is performed via the heat of joining with the lid body). Because the exhaust clearance is extremely narrow (G), it is difficult to perform the exhaust properly (there is a hole inside the main body), and it takes a long time to complete the vacuum evacuation process 1311 before the waxing process. ?'r Incompetent 4!l'1 no tea/:,) and 1, L゛1; high vacuum '1・F; guest with excellent heat effect, etc. ′−
::;
It was a point).

The present invention aims to solve these problems and provide a method for efficiently manufacturing and packing empty airtight containers. -J 1lii”
After placing the lid plate on the container body, the inside of the container body is heated and the two parts are joined together. (Placement funnels that can also be used for both heating and heating are placed at a distance of n-8 from each other so as to create a sufficient exhaust gap between the adjacent wax phases, and then a vacuum is applied. J ~ The process is characterized in that the 1 L air evacuation process and brazing are performed simultaneously in the furnace.

This will be further explained in detail based on illustrated embodiments.
In the embodiment shown in Fig. 1, (1) is a metal thug made of aluminum or the like with an opening (2) formed on the - side.
, "÷ main body, (3) is its D; the same metal lid Jj that hermetically seals the 11 songs, . . . (4) is the main body of the container (IZ)
4. Vacuum between 1) and the lid LM t3+. For example, it is a plurality of short rod-shaped 1i54 kiro shrines that also serve as exhaust gap formations. Therefore, when manufacturing a vacuum-sealed container, in step 1-, the container body (1) is opened ("1").
In 1-, place the above-mentioned exhaust gap formation J, 4' i51 so that there is a sufficient cane gap (6) between the adjacent ones. Relax,
Place the lids Jd, j f3 on the spaced apart state (for example, 1) and place the lids Jd, j f3 on the top of the container.In this state, vacuuming is carried out in the vacuum heating furnace, and the gap shown in the space 1 is placed. 6
), the inside of the container is evacuated, and if the predetermined degree of vacuum is not reached, heating is started to raise the temperature below the melting point of the brazing filler metal (5).
I rise to i'H. Then, as the wax shrine (5) melts, the wax (5) spreads over the entire 1m of the joint due to the milt of the lid plate (3), and the wax between the container body (1) and the lid plate (3) reaches an IJI stage. attached or achieved.

/Yo, in order to make this brazing more reliable,
Lid A'fi, put "" on "-" of +3+, -1]
It is preferable that the brazing process be carried out under conditions where the cover plate is pressed with a spring force of 11'J.

Indeed, it is also possible to implement the method according to the present invention in combination with conventional methods.

Therefore, as shown in FIG. 2, 1, 1. “r it゛t3+
Close 1. Using a pre-song sheet clad with a joining brazing material (3a), the inner IJ, l + 31 and the volume:
It is also possible to arrange a 11) degree chirosha (5) which also serves to form an evacuation gap between the whole body (1) and perform the evacuation and brazing processes. In history, there was a difference between the conventional Okiro method (for Jt, Okiro shrine for forming the exhaust gap (5)
4. Add a hole for joining the ring shape, etc. ．． 1+4.1
Separately place the lid plate (3) on top of it and apply vacuum 1.
'J1 care and brazing are also performed.

According to this invention, between the container body and the plate to be hermetically joined thereto, a gap of +9r is left between adjacent brazing filler metals for forming an exhaust gap. Since the vacuum evacuation and brazing are performed by placing a brazing IU, the vacuum inside the container can be reliably and quickly performed even though the brazing is performed through the joint. It is possible to obtain a p-air sealed reactor with superior high vacuum performance than in the conventional method, and it is also possible to obtain
The first step and the brazing step are purposely divided into two steps.In vacuum brazing, the process is considered as follows: 2: ÷The inside of the main body is sufficiently evacuated before brazing is performed. Since it becomes possible, it has an additional effect of simplifying the manufacturing process of empty airtight containers and greatly increasing the manufacturing efficiency.

[Brief explanation of drawings]

Fig. 1 is a fragmented perspective view showing one embodiment of the present invention, Figs. 2 and 3 are sectional views of other embodiments, and Figs. 4 and 5 are explanations of the conventional method. ). (1)...Container body, (2)...1 part of lfN I,
(3)...Demand υc) 5)...Exhaust gap
1″.

Claims (1)

[Claims] After opening the container body and placing the lid plate through the opening of the container body (1, ','; When joining, create multiple exhaust gaps between the wood and the wood. During the adjacent month, the moxa was placed in a state of separation from each other so as to create a gap of 11 moxibustions (14 moxibusters), and then 1 moxibustion was performed in a vacuum in a nitrogen heating furnace for 1 moxibustion. A method for manufacturing a vacuum-sealed container characterized by simultaneous processing.