JPS6025356Y2 - Welding end tab - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a welding end tough made of a flammable solid flux that forms voids on both sides of a groove of a welding material.

By using it for groove welding, the above end tab can form an extra bead on both sides of the groove weld, and therefore, by starting welding from the edge side of the groove, it is possible to It is possible to remove the slag entrapment, which tends to occur and cause welding defects, from the main body of the weld between the grooves, and furthermore, it is possible to preheat the welding material, improving the penetration of the weld metal. It has the following advantages.

However, when performing multilayer welding between grooves, 1
Each time welding of a bus is completed, the slag that has risen to the surface of the welded metal and solidified is removed by hacking, etc., but the end tough gets in the way, and the exfoliated and crushed slag is removed from the concave space between the end tab and the welding material. This makes it extremely difficult to remove the remaining slag from the welding process, and there is an extremely high risk that the remaining slag will become entangled in the weld metal in the next welding process.

In view of the above circumstances, the object of the present invention is to provide a useful welding end tough that allows solidified slag to be easily and reliably removed through simple modification.]
,ing.

Embodiments of the present invention will be described below with reference to the drawings.

1.2 is an example of a welding material to be connected and connected, 1 is a column, and 2 is a groove welded to the column.

The welded end of the kat 2 is cut into an inclined surface S1 so as to form a ■-shaped groove A with the welded surface S of the pillar 1.

Reference numeral 3 denotes a backing metal that is placed on the back side of the groove A of the pillar 1 and the groove 2, and is attached to the pillar 1 and the groove 2 by temporary welding, and its both ends protrude from both sides of the groove A. .

Reference numeral 4 denotes welding end tabs made of refractory solid flux, which are attached to both sides of the groove A using a jig 5 so as to be easily attachable and detachable.

When this end tab 4 is attached to the groove, its upper and lower surfaces protrude more than the upper and lower surfaces of the groove 2, and when viewed from the side, it is used for welding slag removal which is slightly larger in the horizontal direction than the groove A. The tab body 6 includes a tab body 6 having an opening B, and a lid body 7 which is narrower than the tab body 6 and which freely closes the opening B.

The tab body 6 is provided with the bottom surface a of the opening B substantially flush with the top surface of the backing metal 3, and one side surface of the tab body 6 in contact with the side surfaces of the pillars 1 and 2. , recesses 8, 8 into which the protruding ends of the backing metal 3 are inserted are formed on both sides, and furthermore, at the widthwise center of the opening B, a vertical V-shape is formed on each of the opposing vertical wall surfaces. shaped guide groove 9,
9, and a portion of the lid body 7 facing the guide grooves 9, 9 has a V shape that fits into the guide grooves 9, 9.
ridges 10, 10 are formed, and when the opening B is closed by the lid 7, a gap C is formed on one end side of the groove A.
The opening B is opened and the solidified slag is easily removed from the opening B when the lid body 7 is pulled upward. It is possible to be given.

In the end tab 4 having the above configuration, the gap C9C is formed symmetrically with respect to the center in the width direction, so by preparing two of the gaps C9C, the groove A can be formed regardless of the mounting direction. Although it is possible to form the same-shaped air gap C9C on both sides and to double the service life, it is also possible to have a configuration in which the air gap C9C is not provided on one side.
Alternatively, the gap C9C may be formed asymmetrically so that the width of the gap C9C is different, so that it can be used for welding symmetry in which the width of the surplus bead is increased.

The jig 5 for attaching the end tabs consists of members 13 and 13 each having a presser plate 12 at the tip of each end of the U-shaped support member 11, as shown in FIGS. 1 and 2. are attached with their presser plates 12 and 12 facing each other so as to be slidable in opposite directions, and both presser plates 1
Spring 14 which urges 2.12 in the direction of approaching.
14, and a plate stopper 15 is attached to the retainer plate mounting member 13.13, and the retainer plate 12.12 is moved apart from the retainer plate 12.12 against the biasing force of the spring, and is attached to both sides of the groove A. By abutting against the outer surfaces of the positioned tab bodies 6, 6, the end tabs 4, 4 can be fixed in an elastically clamped state, and the end tabs 4, 4 can be easily removed.

6 and 7 show another structure of the jig 5, in which the tab body 6
An L-shaped presser plate 12 that also serves as a receiver is slidably provided on the support body 16, and two U-shaped support members 11°11 are pivotally mounted across the two supports 16. Turnbuckle 1 on both left and right sides of .11
7.17 pivoted, turnbuckle 17.17
By adjusting the length, the end tabs 4, 4 can be satisfactorily set for welding objects having different groove A depths.

FIG. 8 shows another embodiment of the tab body 6, in which the guide groove 9
, 9 is formed in the tab body 6, and a portion that fits into the through hole 18 when the opening B is closed is provided in a continuous manner at the lower end of the lid body 7,
When the solidified slag is removed when the lid 7 is removed, a part of the slag is prevented from remaining in the guide groove 9, and the opening B can be properly closed by the lid 7. be.

The shape of the opening B is different from the groove A, such as ■ shape, U shape, J shape, etc.
The opening B can be deformed according to the shape of the end tab, and the gap C is formed by the end tab 7. However, as shown in FIG. 9, the gap C may be formed by the cover 7 itself. The specific structure of No. 4 can be modified in various ways.

As explained above, the welding end tab according to the present invention is
It is characterized by consisting of a tab body having an opening for removing welding slag, and a lid body for opening and closing said opening.Thus, while making full use of the original advantages of the end tab described at the beginning, the lid body 1 by only opening and closing operations.
Welding slag can now be removed extremely easily and reliably after each pass.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a side view of the end tab set, Fig. 2 is a plan view of the same, Fig. 3 is an exploded perspective view of the end tab, and Fig. 4 is a horizontal sectional view of the same. Fig. 5 is an explanatory diagram of slag removal, Fig. 6 is a side view of a jig for installing an end tab with a modified structure, Fig. 7 is a front view of the same main part, and Fig. 8 is a perspective view showing another embodiment of the tab body. 9 are cutaway perspective views showing another embodiment of the lid body. 1, 2...Welding material, 6...Tab body,
7...Lid body, 9...Guide groove, 18...Through hole, A...Bevel, B...Opening, C ...
...Void.

Claims (1)

[Scope of Claim for Utility Model Registration] ■ A welding end tab made of fire-resistant solid flux that forms a gap for forming a surplus at both ends of a groove of welding material, which has an opening for removing welding slag. What is claimed is: 1. A welding end tab comprising: a tab body having a main body; and a lid body for opening and closing the opening. (2) A pair of guide grooves are formed on opposing vertical wall surfaces of the opening to allow the lid to be raised and lowered so as to be openable and closable;
The utility model registration claim 2 is characterized in that the bottom surface of the opening is formed with a vertical through hole into which the lower side of the lid body is inserted, which is connected to the guide groove. End tab for welding.