KR100444706B1 - Flux laminated alloy, its manufacturing process - Google Patents

Abstract

PURPOSE: A flux laminated alloy and a manufacturing method thereof are provided to coat flux on the filler metal by forming the W-shaped section and injecting the powdered flux, and to improve working efficiency by increasing the heating sectional area in brazing and soldering. CONSTITUTION: The thickness of a rod(1) of filler metal is decreased by passing filler metal through a couple of rollers(10), and the section of filler metal is deformed into a plate(2)(S10). A bent material(3) is formed by passing the plate of filler metal through upper and lower bending embossing rollers(20,21), and the W-shaped section of filler metal is formed with a bending projection, an embossing projection and a bending groove(S20). Thin flux is formed on the bent material by injecting powdered flux to the bent material with a flux injector(30)(S30). Flux laminated alloy(4) with the compact W-shaped section is formed by decreasing the sectional area of the bent material in passing the bent material via forming rollers(40)(S40).

Description

Flux laminated alloy and its manufacturing process

The present invention relates to a filler metal used as a joining material in brazing and soldering joining techniques among metal joining methods, and in particular, flux 50 used to improve joining properties is provided. The present invention relates to a flux laminated alloy coated with a thin layer on the filler metal 60 and a method of manufacturing the same.

First of all, brazing joining technology works at temperatures above 450 ° C and below the melting point temperature of the base metal to be joined. It is used to apply flux, filler metal, and heat to the base metal. The two base materials are joined together, but the base material is not deformed during the working process. Soldering joining technology is the same principle as the brazing joining technology, but it refers to the technology of joining at working temperature below 450 ° C.

The filler metal bonds the two base materials while melting by heat during brazing and soldering, and considers silver, copper, zinc, cadmium, phosphorus, nickel, manganese, tin, aluminum, Select the alloy containing silicon and lead.

During brazing and soldering, oxides are generated as the filler metal melts. To prevent such oxides and to obtain a good bonding surface, borates, alkalis, chlorides, borax and boron are used, and these are called fluxes. Flux has the following features:

Flux decomposes and absorbs oxides remaining on the surface of the base material or generated during heating to inhibit oxidation of the surface of the base material. It also increases the flowability of filler metal by keeping the base surface clean during brazing and soldering.

Flux and filler metal are generally used in their respective forms or in combination.

Complex types include flux coated alloys for flux coating on the outer circumferential surface of the alloy selected as filler metal and flux cored alloys in which powdery flux is injected into the alloy selected as filler metal cored alloys) and flux mixed alloys in which filler metals and fluxes are mixed.

In particular, the conventional flux cored alloy 70 shown in FIG. 5 is formed by injecting a powdery flux 50 into the wire-shaped filler material 60 and rolling the filler material 60 roundly. As a matter of course, since the joint 61 is inevitably formed, there is a problem of continuously leaking when the flux 50 of the powder begins to leak between the joints 61.

Accordingly, the present invention has been made in view of the above problems, the main object of which is to process the filler metal, the cross-sectional shape is processed to form a "W" shape, and then the flux of the powder is injected into the flux filler material The present invention provides a flux laminated alloy composed of a thin layer and a method of manufacturing the same.

1 is a perspective view showing the overall process of the present invention

Figure 2 is a perspective view showing the in-process rolling step of the present invention

Figure 3a is a perspective view showing a bending embossing step and a flux injection step of the present invention

3B is a sectional view showing two contacts of a bending embossing roller;

Figure 4 is a perspective view showing the firing step in the process of the present invention

5 is a perspective view of a conventional Flux cored alloy.

<Description of Symbols for Major Parts of Drawings>

1: sewing

2: Plate

3: bending material

4: flux laminated alloy

10: rolling roller

20: upper bending embossing roller

21: lower bending embossing roller

22: bending protrusion

22a: embossing protrusion

23: bending groove

24: embossing

30: flux injector

40: firing roller

50: Flux

60: filler metal

61: seam

70: flux cored alloy

S10: rolling step

S20: bending embossing step

S30: flux injection step

S40: firing step

Hereinafter, with reference to the accompanying drawings, preferred embodiments and technical configurations that can achieve the object of the present invention will be described.

1 is a perspective view showing the overall process of the present invention, Figure 2 is a perspective view showing the in-process rolling step (S10) of the present invention.

The present invention consists of a rolling step (S10), bending embossing step (S20), flux injection step (S30) and firing step (S40) as shown in FIG.

As the first step of the present invention is a rolling step (S10), as shown in Figure 2, the filler material 60 of the rod (1) shape is passed through a pair of rotating rolling rollers 10, so the compression load is applied It is a step in which the cross-sectional shape is deformed to the filler metal 60 of the plate member 2 shape.

Figure 3a is a perspective view showing a bending embossing step (S20) and a flux injection step (S30) of the process of the present invention, Figure 3b is a cross-sectional view showing two contacts of the bending embossing roller.

Bending embossing step (S20) of the second step of the present invention is the top bending embossing roller 20 to rotate the filler metal 60 of the plate member 2 passed through the rolling step (S10) as shown in Figure 3a and The cross section of the "W" shaped bending material 3 by the bending protrusion 22 and the bending groove 23 formed on the outer circumferential surfaces of the upper and lower bending embossing rollers 20 and 21 while passing between the lower bending embossing rollers 21. ) Is a step formed.

In addition, the surface of the bent material 3 is bent by the embossing protrusion 22a formed on the side surface of the bent projection 22 shown in FIG. 3B and the embossing 24 is applied to the filler material 60 having the shape of the plate material 2. This is the stage of transformation.

The third step of the present invention is a flux injection step (S30), as shown in Figure 3a through the bending embossing step (S20) of the emulsifier 24 is formed in the filler material 60 of the bent material (3) shape is formed Injecting the flux 50, it is a step of injecting through the flux injector 30 between the bent material (3).

Figure 4 is a perspective view showing the in-process firing step (S40) of the present invention.

The fourth step of the present invention is a firing step (S40), as shown in Figure 4 arranged in series rollers 40, passing through the bending material (3) is bent in the process of passing through the baking roller 40 The cross-sectional area of the ash 3 is gradually reduced to form a flux laminated alloy 4 having a dense " W " shape.

At this time, since the speed of the filler metal 60 passing between the baking rollers 40 arranged in series increases each time passing through each baking roller 40, the speed of the baking roller 40 is also gradually adjusted.

The flux laminated alloy 4 is composed of a thin layer on the filler metal 60 while the flux 50 is filled between the bent material 3 and into the embossing 24 as shown in the enlarged view of the circle of FIG. 4.

The flux laminated alloy 4 shown in the enlarged view of the circle of FIG. 4 is excessively enlarged than the actual product to illustrate the present invention, and the actual product has a bent surface that is dense so that the cross section is as rectangular as possible. It is recognized as an image.

The flux laminated alloy 4 as described above is a shape in which the bent surface on which the embossing 24 is formed is overlapped, and the flux 50 does not leak out during storage, and only the part of the overlapped bent surface is leaked even when leaked. It does not affect other bending surfaces, and due to the overlap of the bending surfaces during heating, the heating material is heated faster as the heating cross-sectional area per unit area is increased than the conventional flux cored alloy 70 shown in FIG. As it melts, the joining takes place quickly.

In addition, as the flux 50 is composed of a thin layer, the flux 50 which is in close proximity at the time of melting the filler metal 60 is rapidly mixed with the filler metal 60, thereby increasing the fluidity of the filler metal 60 to thereby rapidly join the process.

The flux 50 suppresses oxidation of the surface of the base material by decomposing and absorbing oxides remaining on the surface of the base material or generated during brazing and soldering, and also increases the flow rate of the filler metal 60 by keeping the surface of the base material clean.

As described above, the flux laminated alloy, in which the flux is thin, improves the problem of the conventional flux cored alloy, which continues to leak when the flux begins to leak between the seams during storage. As flux is leaked during storage, considering that it is a bent material having a dense "W" shape in cross section, it only leaks in one part of the overlapping bent surfaces and does not affect the other bent surfaces. As the heating cross-section per unit area is increased faster than the flux cored alloy of, the working efficiency of the bonding process is improved.

Claims (2)

Rolling step of deforming the cross-sectional shape to the filler metal 60 of the plate material (2) is reduced because the compression load is applied as the filler material 60 of the rod (1) shape is passed between the pair of rotating rolling rollers 10 (S10); The filler metal 60 in the shape of the plate 2 passed through the rolling step S10 is passed between the upper bending embossing roller 20 and the lower bending embossing roller 21 and formed on the outer circumferential surface of the upper bending embossing roller 20. &Quot; W " in which the embossing 24 is formed in the cross section by the bending groove 23 formed on the outer circumferential surface of the bending protrusion 22 and the lower bending embossing roller 21 formed on the side of the bending protrusion 22 and the bending protrusion 22. FIG. Bending embossing step (S20) formed of a bent material (3) of the shape and; The flux 50 is injected through the flux injector 30 between the bent material 3 and the flux 50 of the powder on the bent material 3 on which the embossing 24 having passed through the bending embossing step S20 is formed. Flux injection step (S30) to be composed of a thin layer on the bending material (3); As the bent material 3 passed through the flux injection step S30 passes between the baking rollers 40 arranged in series, the cross-sectional area of the bent material 3 is gradually reduced to form a "W" shaped flux ramie with a compact cross section. Method for producing a flux laminated alloy consisting of a firing step (S40) is formed of a bonded alloy (4) (Flux laminated alloy). Flux laminated alloy prepared by the method of claim 1.