FI77394B - FOERFARANDE FOER FASTSVETSNING AV EN STOEDPROFIL I EN MELLANVAEGG. - Google Patents

Description

77394

The present invention relates to a method for welding a support profile to a partition according to the preamble of claim 1.

The invention can be applied in various tank and other structures, for example in vehicles or ships.

In previous solutions, the support profile is first welded to the base plate, after which a partition wall with an opening at the bottom is lowered onto the profile. A piece is welded to the opening of the partition wall, in which a hole in the shape of a cross-section of the profile, slightly larger than the profile, has previously been made. The piece is halved vertically and the halves are waterproof welded to the partition, the base plate and all the sides of the profile intersecting the plane parallel to the piece.

A disadvantage of the prior art is that the weld between the block and the profile, which is surrounded by the smallest possible rectangle around the bulb, L, U or T profile, is difficult to make watertight due to the narrow welding target.

The object of the present invention is to obviate the disadvantages of the technique described above and to provide a completely new type of method for welding a support profile to a partition wall.

The invention is based on the fact that before welding the support profile to the base plate, filler pieces are welded to the profile waterproofly at the partitions so that the weld seam inside the smallest possible rectangle arranged around the profile can be welded completely or almost completely free.

More specifically, the method according to the invention is characterized by what is set forth in the characterizing part of claim 1.

The invention provides considerable advantages.

With the method according to the invention, a waterproof weld of the support profile can be easily achieved, because the welding of the filler 2 77394 can be carried out in the free space. The amount of welding is also reduced and welding is accelerated due to better working conditions. The filling piece also supports the structure and thus eliminates the need to use knees with which the profile has previously been supported in the partition.

The invention will now be examined in more detail by means of an application example according to the accompanying drawings.

Figure 1 shows a perspective view of the fastening of the L-beam by means of a filling piece to the base plate and the partition wall.

Figure 2 shows a top view of the combination of Figure 1.

Figure 3 shows the combination of Figure 1 as seen from the direction of the profile.

Figure 4 shows in cross-section the attachment of several L-beams by means of a filler piece to the base plate and the partition wall.

Figure 1 shows one possible solution for welding the support profile 3 to the partition wall 1. The parts to be welded can be, for example, aluminum. The filling piece 4 is welded to the L-profile 3 in the free space before the profile 3 is welded to the base plate 2. The filling piece 4 has a rectangular cross-section so that together with the L-profile 3 it forms a slightly larger rectangular cross-section. Since the base plate 2 is not impeding work, the welds 6 are easy to make waterproof. After welding the filling piece 4, the filling piece profile combination 3, 4 is welded watertight to the base plate 2. The partition 1 with the recess 7 for the filling piece profile combination 3, 4 is lowered against the base plate 2 so that the recess 7 is at the filling piece 4. . The cavity 7 is covered with a plate-like patch 5 in which an opening the size of the filling piece profile combination 3, 4 is made, e.g. by flame cutting, and the patch 5 is waterproof welded to the base plate 2, the partition wall 1 and the filling piece profile assembly 3, 4.

3 77394

Figure 4 shows another possible solution for welding the support profile 3 to the partition wall 1. The profiles 3 are filled at the partition wall 1 by welding the waterproof filling pieces 4 in a free space. Thereafter, the profile-fill-piece-assembly 3, 4 is welded watertight to the base 2. Between the profile-fill-piece assemblies 3, 4 the patches 8 are welded so that the welds between the patches 8 and the profile-fill-piece assemblies 3, 4 the welds between the patches 8 and the base plate 2 are waterproof. The patches 8 are shaped in such a way that the upper surface of the profiles 3 and the patches 8 follows the shape of the base 2 as closely as possible or is otherwise as simple as possible and without recesses. After welding the patches, the partition wall 1 is welded watertight to the upper surface of the profiles 3 and the patches 8.

The support profile 3 can also be e.g. a U or T profile. In the latter case, the profile can be considered to consist of two L-profiles facing each other, whereby in the method according to the invention two filler pieces 4 are required for each partition wall. bulkhead, midsole or similar. The angle between the partition 1 and the base plate 2 can also be arbitrary.

Claims (2)

4 77394 A method for waterproof welding a support profile (3) of open cross-section, e.g. an L, T or U profile, to a partition wall (1), the method comprising: - welding the profile (3) to a first plate (2) in a plane parallel to the profile (3) , around the profile (3), a plate-label combination (1, 5 or 1, 8) consisting of at least one second plate (1) and at least one plate (5) in a plane intersecting the profile (3) and ), - the plate-patch assembly (1, 5 or 1, 8) is welded watertight to the profile (3) and to the first plate (2), characterized in that - before welding the profile (3) to the first plate (2) cross-section of the profile (3) by welding in the profile (3) watertight and parallel to the profile (3) a filler (4) with a dimension parallel to the profile (3) at least four times the thickness of the second plate (1) and whose cross-section completes the profile ( 3) a cross-section such that the cross-section of the combination (3, 4) thus obtained is at least approximately free of recesses, e.g. rectangular, followed by a plate-patch assembly (1, 5 or 1, 8) against the first plate (2) an opening following the cross-section of the assembly (3, 4) is fitted to the incoming edge, welded watertight to the assembly (3, 4) and to the first plate (2). 5 77394 Method according to Claim 1, characterized in that aluminum or an aluminum compound is used as the material for the bodies (1, 2, 3, 4, 5) to be welded together. 77394