JPS58154454A - High-temperature brazing device of piping - Google Patents

Abstract

PURPOSE:To obtain an efficient, simple titled device that enables fieldwork, by pressing the second pipe to fixed first pipe by an energizing device through a ring brazing filler metal and heating the joint while supplying an inert gas. CONSTITUTION:A copper pipe 1 and a connecting pipe 3 are combined by providing ring brazing filler metal between the opposite faces of the pipes. The copper pipe 1 is fixed to a pipe seat 9 on the stand 5 by a clamp lever 8, and the pipe 3 is supported by a connecting pipe seat 4. The connecting pipe 3 is pressed to the copper pipe 1 side through the pipe seat 4 energized by a spring 6 installed between a collar provided on a side of the pipe seat 4 and a collar 41 provided on a support 40 on the stand 5. Under this condition, ring brazing filler metal is heated and molten while flowing an inert gas such as nitrogen, etc. from a hose 7 connected to the end of the pipe seat 4 to the pipes 1, 3 through the hollow pipe seat 4. Thus, the pipes 1, 3 are brazed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Description of the Technical Field] The invention relates to an apparatus for use in high-temperature brazing operations of piping.

[Description of prior art]

Generally speaking, there are two types of brazing work, especially high temperature brazing work. First, when using brazing material such as B A/7, 7 lux is also used. With this brazing method, since the flux is exposed to high temperatures, carbonized 7-lacs precipitates, which significantly impairs the aesthetic appearance.
In addition, there is a risk of corrosion caused by residual flux, so it is necessary to clean it thoroughly after brazing. Second, BCu
This is a brazing work that does not use flux with a brazing material such as P5 that has a self-flushing action.

By the way, in the second brazing operation mentioned above, that is, the brazing operation that utilizes the self-flushing effect of BCuP5, etc., there is no need to apply flux to the brazed part of the parts to be brazed, so carbonized flux, residual flux, etc. Although the removal process is omitted, methods such as introducing inert gas are taken to prevent the formation of an oxide film inside the pipe. However, in some cases, the waste inlet device becomes large and envelops the entire part to be brazed, or the device itself is installed as a completely independent device, and it cannot fix or heat the part to be brazed. , the work of injecting inert gas became a separate work, which was unfavorable in terms of efficiency. Also, if a ring etc. is used, pipe 1 as shown in Figure 1.
After melting the solder ring 2, the gap 2, which is equal to the thickness of the ring solder 2 placed between the ring solder 2 and the connecting pipe 3, is closed, and it is safe to apply some external force from an independent thread. Taking these conditions together, we were able to conclude that high-temperature brazing work is possible in well-equipped locations such as factories, but would be difficult to perform on-site. In other words, despite the fact that the high part low profile is generally superior in strength compared to the low part low profile, AiT
Due to the above-mentioned circumstances, we had no choice but to abandon high-temperature brazing during the on-site construction and instead use 1-cm crystal brazing.

[Purpose of the invention]

The present invention has been made in consideration of the above circumstances, and is particularly designed to streamline and simplify the work of brazing pipes, and to improve the efficiency and simplification of brazing work on pipes. The purpose of this invention is to provide a work device for high-temperature brazing of piping.

[Configuration of Example]

Hereinafter, the present invention will be described with reference to FIGS. 2 and 3, using an example of brazing a steel vibrator and a connecting pipe.

Combine the copper pipe and the connecting pipe 3, and insert the ring solder 2 into the instep as shown in Figure 1. In this state, a steel pipe is set on the pipe seat 9 set in the soil of the stand 5, and fixed with the clamp lever 8. At this time, the connecting pipe seat 4 is in a state where it is pushed to the left as viewed in FIG. That is, the spring 6 is biased between the collar 4a provided on one side of the connecting pipe seat 4 and the collar 41 provided on the support base 4° that supports this.

Here, the pipe seat 4 is movably supported by the support base 40. It is assumed that the center of the pipe seat 9 protrudes uniformly depending on the size of the pipe used. In this state, heating is performed while inert gas, such as nitrogen, is flowed through the end of the pipe seat 4 from the hose 7. The connecting pipe seat 4 is formed in a hollow shape, so that the connecting pipe seat 4 is hollow. When the pipes 3 and 1 are connected, the pipes 3 and 1 and the hose 7 will communicate with each other. When the temperature rises and Shiringou 2 melts,
A void is created there. Then, since the steel pipe 1 is fixed, the connecting pipe 3 set in the connecting pipe seat 4 is pushed by the force of the spring 6, and the gaps become f and f. A plate 10 attached perpendicularly to the stand 5 is used when fixing the entire stand 5 in a vise or the like.

Further, as a method of moving the connecting pipe seat 4, it is also effective to use compressed air.

〔effect〕

As described above, according to the present invention, the high-temperature brazing work of pipes, etc. requires only heating, and the work of setting the pipes, preventing oxidation, and eliminating voids by using ring brazing is performed by machines. It can be done accurately. For this reason, on-site brazing work is easy, and equipment such as Honjiki, heating equipment,
All you need to prepare is inert gas.

Furthermore, this equipment is structurally lightweight, can be manufactured at low cost, and does not have space restrictions like fixed equipment.

[Brief explanation of drawings]

Figure 1 is a cross-sectional view of a case where pipes and connecting pipes are brazed using a ring solder, Figure 2 is a diagram showing a high-temperature brazing work device, and Figure 3 is a view taken along arrows A-N in Figure 2. It is.

Claims (1)

[Claims] A ring solder is placed between the opposite end surfaces of the first pipe and the second pipe, and the glue/glue is melted to separate the first and second pipes.
A first pipe seat that supports and fixes the first pipe, and a support that supports the second pipe and always presses the second pipe toward the first pipe. a hollow connection pipe seat provided with a force means; a support base movably supporting the connection pipe seat; A high-temperature brazing device for piping, which is connected to a device that allows inert gas to flow into the pipe.