JPH0596369A - Aggregate fillet welding method - Google Patents

Abstract

PURPOSE:To eliminate the time to interrupt and resume welding on a hole part and to obviate supervision of an operator. CONSTITUTION:At the time of fillet-welding 6 a web 4 to the face, etc., 5 of aggregate by automatic welding, continuous welding 10 is performed without interrupting welding even at an end of a scallop 8 provided on an edge of the web.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an aggregate fillet welding method.

[0002]

2. Description of the Related Art As shown in the perspective view of FIG. 2, in a liquid tank of a ship, a longitudinal rib 3 penetrating a horizontal bulkhead 2 standing on an outer plate 1 is composed of a web 4 and a face 5. Although the web 4 of the longitudinal ribs 3 and the face 5 and the outer plate 1 are joined by fillet welding 6 by automatic welding, as shown in the side view of FIG. . Therefore, if a leak occurs in the fillet weld 6 of the longitudinal bone 3 of a certain liquid tank, the liquid is transmitted to the adjacent tank through the gap 7 of the fillet weld 6, and the fillet weld 6 is also applied to the adjacent tank. If a leak occurs in the tank, the liquid will spurt out vigorously if the tank is empty.

Therefore, in order to prevent such a situation,
Scallops 8 for draining water are provided on the edge of the web 4 in the vicinity of the front and rear of the horizontal partition wall 2. This portion is shown in FIG.
As shown in (A) front view and (B) plan view, square winding welding 9 is performed after the fillet welding 6 is performed by automatic welding.
In addition, in the fillet welding 6 of the longitudinal ribs 3, the same square winding welding is applied to holes other than the scallop 8 such as slots.

However, in such a method, during the automatic welding of the fillet weld 6, the arc is stopped once when the welding has proceeded to just before the scallop 8 and the welding is restarted immediately after passing through the scallop 8. It is necessary for the operator to operate the welding machine in good time. Further, the square winding welding 9 needs to be performed from both sides of the longitudinal rib 3, which requires a fairly high welding skill and is a time-consuming operation.

[0005]

SUMMARY OF THE INVENTION The present invention has been proposed in view of such circumstances, and it is possible to omit the time for interrupting and resuming welding at the hole portion, and it is necessary to monitor the operator. It is an object of the present invention to provide an aggregate fillet welding method in which the bead shape of the hole is smoothed and the fatigue strength is improved.

[0006]

To this end, the present invention is directed to fillet welding of an aggregate web and a face or a web and an aggregate mounting plate by automatic welding at the end of a hole provided at the edge of the web. Is also characterized by continuous welding and automatic welding without interruption.

[0007]

With the above-described structure, the time for interrupting and resuming welding at the hole can be omitted, the operator need not monitor it, and the bead shape of the hole can be smoothed and the fatigue strength can be improved. An aggregate fillet welding method can be obtained.

[0008]

EXAMPLE An example in which the aggregate fillet welding method of the present invention is applied to scallop welding is shown in FIG. 1 (A) front view and FIG. 1 (B).
Explaining the plan view, when applying fillet welding 6 by automatic welding to the web 4 and the face 5 or the outer plate 1 (hereinafter referred to as the face 5), even at the end of the scallop 8 provided on the edge of the web 4, The continuous welding 10 is performed without interrupting the welding. Further, the square winding welding 9 is carried out before or after the continuous welding 10 as necessary to surely fill the gap of the fillet welding 6 at the scallop 8 part.

In automatic welding, the position of the welding torch does not change even in the portion without the plate of the scallop 8 because the roller follows the face 5 and the like, so that smooth welding can be performed when the continuous welding 10 is performed. is there.

Thus, by adopting such a welding method, it is possible to omit the time for interrupting the welding at the scallop 8 portion and restarting the welding in the prior art. Also, it is not necessary to monitor the 8 parts of the scallop. Further continuous welding 1
By performing 0, the shape of the weld bead becomes smooth even in the scallop 8 part, and the stress concentration of the continuous welding 10 becomes smaller than the stress concentration of the welding toe part of the conventional square winding welding. Will also be higher than before.

[0011]

In summary, according to the present invention, in fillet welding of the aggregate web and face or the web and aggregate attachment plate by automatic welding, welding is also performed at the ends of the holes provided at the edges of the web. By continuously extending and automatically welding without interruption, the time for interrupting and resuming welding at the hole can be omitted, the operator need not monitor, and the bead shape of the hole is smooth. Thus, the present invention is extremely useful industrially, since a fillet welding method for aggregate with improved fatigue strength is obtained.

[Brief description of drawings]

FIG. 1 shows an embodiment in which the aggregate fillet welding method of the present invention is applied to scallop welding. FIG. 1A is a front view and FIG. 1B is a plan view.

FIG. 2 is a perspective view of a known longitudinal bone.

FIG. 3 is a side view of the above-mentioned fillet welding.

FIG. 4 is a diagram showing a conventional aggregate fillet welding method, and is shown in FIG.
Is a front view, and FIG.

[Explanation of symbols]

 1 Outer Plate 2 Horizontal Bulkhead 3 Longitudinal Bone 4 Web 5 Face 6 Fillet Weld 7 Clearance 8 Scallop 9 Square Wrap Welding 10 Continuous Welding

Claims (1)

[Claims] 1. When performing fillet welding of the aggregate web and face or the web and aggregate attachment plate by automatic welding,
An aggregate fillet welding method characterized in that continuous welding is performed without interruption of welding even at an end of a hole provided at an edge of a web and automatic welding is performed.