JP2864332B2 - Flux spraying equipment for welding - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a welding flux dispersing apparatus used when welding is performed on site by an electroslag welding method or a submerged arc welding method.

[0002]

2. Description of the Related Art According to recent welding circumstances, electroslag welding and submerged arc welding are widely used not only for welding in factories but also for on-site construction such as construction or shipbuilding. In the process of automating welding, a welding flux spraying device is always used.
Conventionally, as a method of replenishing the welding flux into the hopper, an 18-liter airtight can is opened and replenished to the hopper directly from the can or after drying in a drying furnace. Some welding apparatuses for performing submerged arc welding in factory welding are provided with a welding flux dispersing apparatus and a welding flux collecting apparatus after welding and circulate in a hopper.

[0003] When the welding flux supplied to the hopper of the spraying device is used for welding, it is generally used in a dry state because it is necessary to prevent welding defects in the weld metal. It is known and implemented. Japanese Utility Model Laid-Open Publication No. 1-38168 discloses a flux apparatus in which a main tank and a flux tank are separated for the purpose of stabilizing the flux level.

[0004]

If the welding flux is used for welding shortly after opening it once,
Drying at 0 ° C. for about 1 hour must be performed in a drying oven or the like. However, as described in the above-mentioned prior art, since the welding work site is on-site welding at a building site or the like, it is difficult to install a drying furnace or the like, and there is a problem that the management storage after bringing in or opening an 18-liter can cannot be sufficiently performed. is there.

Further, the invention disclosed in Japanese Utility Model Laid-Open Publication No. 1-38168 also requires a heater unit for drying, and thus has problems in workability such as management and storage after opening and transportation of heavy objects.

[0006] It is an object of the present invention to provide a welding flux replenishing method and a welding flux dispersing apparatus which can solve the above-mentioned problems.

The present invention has been made in view of the above-mentioned problems, and has as its gist a welding flux.
It has a replenishing container mounting part on the upper part of the spraying device main body, and one joint
Min or 100-1000 g of dry welding flux
The replenishing container, which is sealed and filled, is attached to and detached from the replenishing container mounting part.
It is a welding flux spraying device that can be used, and a supply container
Of the lower supply port and the supply container mounting port,
And that the receptacle of the supply container mounting part has a funnel shape
It is a flux spreading device for welding .

In addition , fitting by vertical or horizontal projections
Supply container, or by fitting with a male screw and a female screw.
Is a welding flux dispersing apparatus characterized in that it can be attached to and detached from a supply container mounting portion .

[0009]

The present invention will be described below in detail with reference to the drawings. FIG.
FIG. 1 is a perspective view showing an example of a welding flux dispersing device of the present invention, and FIG. 2 is a perspective view showing a mechanism of a conventional welding flux dispersing device. In the figure, reference numeral 1 denotes a welding flux, which is scattered in or around a groove before and during welding of electroslag welding or submerged arc welding to form a slag bath for electroslag welding, or an arc during welding. In addition, the vicinity of the arc is shielded from outside air to prevent welding defects.

In FIG. 2, reference numeral 2 denotes a hopper, which is integral with the spraying apparatus main body, and is used to store the welding flux 1 until it is sprayed. 3 in the figure
Is a motor of the spraying apparatus main body, and rotates a gear in the spraying apparatus main body used for sending out the welding flux 1 in the hopper 2 or the replenishing container 7 in the present invention to a welding portion at a constant rate. In the figure, reference numeral 4 denotes a discharge port of the welding flux 1 located at the lower part of the spraying apparatus main body, and reference numeral 5 denotes a nozzle for guiding the welding flux 1 to the vicinity of the welding portion.

In FIG. 1, reference numeral 6 designates a mounting portion of the supply container 7 in the apparatus of the present invention, which is adapted to smoothly supply the welding flux 1 in the metal supply container 7 also serving as a hopper to the spraying apparatus main body. A funnel-shaped receptacle is provided at the center. In the figure, reference numeral 7 denotes a supply container in which the welding flux 1 after drying is equivalent to one weld joint or 100 to 100.
1000 g is stored in a sealed state, and can be used in a state where the welding flux 1 is constantly dried by opening the opening immediately before the start of welding and attaching the opening to the mounting portion 6.

As described above, in the embodiment of the present invention shown in FIG. 1, when the hopper and the spraying apparatus main body 16 are detachable and the hopper is a metal replenishing container 7, drying is performed at the welding site. There is no need to prepare equipment such as a furnace, and equipment costs can be reduced. In addition, since the welding technician does not need to bring heavy objects such as 18-liter cans to a construction site having a poor scaffold, work safety can be improved and labor can be reduced.

The replenishing container of the present invention is the same as the replenishing method described above in that it can be easily brought into the construction site even when the conventional spraying device shown in FIG. 2 is used, and a drying furnace is unnecessary. The effect is obtained. Further, the capacity of the replenishing container is only required to be able to enclose a required amount of welding flux for welding one welding point, that is, one welding joint.
By enclosing 0 to 1000 g in one container, waste of welding flux is reduced and moisture absorption is prevented.

The shape of the replenishing container 7 need not be limited to the shape shown in FIG. 1, that is, the one shown in FIG. 3, but is cylindrical as shown in FIG. As shown in the figure and the side view, the shape may be a quadrangular prism, or even a cone. The lid 8 of the supply container 7 may be anything as long as it is nonflammable, such as an aluminum foil tape or a screw-in type, or may be a pull can such as a beverage can. In FIG. 5B, reference numeral 9 denotes a partition plate. The material of the metal supply container 7 is not particularly limited as long as it can withstand the temperature of about 100 ° C. of the flux after firing, and iron, aluminum, and the like are preferable in terms of cost and workability.

As a method for attaching the supply container 7 to the attachment portion 6, the supply container 7 may be simply covered on the attachment portion 6 as shown in FIG. 1, but provided separately as shown in FIGS. Alternatively, they may be fixed using the vertical protrusions 10 and 11 or the horizontal protrusions 14 and 15 or may be fixed using the male screw 12 and the female screw 13 as shown in FIG. 6 to 8, (a) is an overall view, (b) is a partially enlarged view, and (c) of FIG. 7 is a partially enlarged view as viewed from a direction perpendicular to (b).

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As a result of applying an aluminum replenishing container to the flux spraying apparatus of the present invention shown in FIG. 1 and applying the method to an automatic rail welding method using a non-consumable nozzle, the welding flux set for each welded portion was sprayed. The welding was performed smoothly, no leakage of the welding flux from between the supply container and the mounting portion was observed, and welding to the rail head could be completed.

Table 1 shows the results of measuring the moisture content of the dried flux, the flux stored for 2 weeks by the method of the present invention, and the flux left indoors for 2 weeks as a comparative example (shown as a percentage of the total weight). And Further, the presence or absence of welding defects by a macro test when welding is performed using each of them is also shown. In the table, the moisture content of the flux after drying is 0.04 w%, and in the present invention example is 0.06 w%, and the appearance of pits or pock-like welding defects on the appearance and macro cross section of the weld after welding. Was not observed. On the other hand, in the comparative example, the water content was 2.8 w%, and pit-like welding defects were observed from the appearance and the macro cross section after welding.

[0018]

[Table 1]

[0019]

By implementing the present invention, it is not necessary to bring a drying furnace or the like to the site of welding work, and equipment costs and the complexity of power supply to the drying furnace can be reduced. In addition, since the welding flux can be constantly used in a dry state, it is possible to solve some of the welding defect generation factors. The work of transporting heavy objects such as 18-liter cans is eliminated, and the labor of welding technicians can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of a welding flux spraying apparatus according to the present invention.

FIG. 2 is a perspective view showing a conventional welding flux spraying apparatus.

FIG. 3 is a perspective view showing an example of a supply container.

FIG. 4 is a perspective view showing an example of a supply container.

5 (a) is a front view and FIG. 5 (b) is a side view showing an example of a supply container.

FIGS. 6A and 6B show an example of a method of attaching a replenishing container to an attaching portion, and FIG.

FIG. 7A is a front view and FIG. 7B is an enlarged view showing an example of a method of attaching a supply container to an attachment portion.

8A and 8B show an example of a method of attaching a supply container to an attachment portion, and FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Welding flux 2 Hopper 3 Motor 4 Discharge port 5 Nozzle 6 Supply container attachment part 7 Supply container 8 Lid 9 Partition plate 10, 11, 14, 15 Projection 12 Male screw 13 Female screw 16 Welding flux spraying device main body

────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Kenichi Kamine 20-1 Shintomi, Futtsu-shi, Chiba Nippon Steel Corporation Technology Development Division (56) References JP-A-4-333385 (JP, A) Japanese Utility Model Showa 61-34530 (JP, U) Japanese Utility Model Showa 55-77584 (JP, U) Japanese Utility Model Showa 5-47955 (JP, U) Japanese Utility Model Showa 48-35230 (JP, Y1) (58) (Int.Cl. ⁶ , DB name) B23K 25/00 B23K 9/18 B23K 35/40

Claims (2)

(57) [Claims] 1. A welding flux disperser is provided at the upper part of the main body.
It has a supply container mounting part, one joint for welding or 100 to 10
Refilling sealed filling with 00g of dry welding flux
Welding hula that allows the container to be attached to and detached from the replenishing container mounting part
The sprinkler is a supply port at the lower part of the supply container and a supply container.
Of the receptacles of the container mounting part, at least the supply container mounting part
Welding flange characterized in that the receptacle has a funnel shape
Box spraying equipment. 2. A fitting with vertical or horizontal projections.
Or the supply container can be supplemented by fitting with male and female threads.
Claims characterized in that it can be attached to and detached from the supply container mounting part.
2. The welding flux spraying device according to 1.