JPH01295013A - Method for connecting different kind steel rolled coils - Google Patents

Abstract

PURPOSE:To enable to use connecting boards repeatedly and improve the operation rate of an installation by seaming and fixing two connecting boards bored with pierced holes with two different patch boards of the same materials as rolled coils and then fixing the rolled coils of the same materials to the respective connecting boards. CONSTITUTION:Slots 5 are bored in bonding boards 1, 2 of stainless and titanium materials. The slots 5 of both bonding boards 1, 2 are seamed with sewn boards 3, 4 of the same materials as overlap coils. The connecting boards 1, 2 are assembled and combined by welding the ends of the boards 3, 4 to the respective connecting boards 1, 2 of the same materials, folding back the utmost seam ends, and welding them to the respective patch boards. The rolled roll ends of the same materials are welded to these combined connecting boards 1, 2. As a result, the connecting boards 1, 2 are used repeatedly as well as the operation rate of a continual annealing installation is improved without the connected parts being ruptured.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention provides a method for connecting coils of different steels, especially rolled coils made of materials that cannot be joined by direct welding, through a coil connecting member on the entry side of a continuous annealing furnace. The present invention relates to a method for connecting rolled coils of different steel types.

(Prior Art) A common method for connecting rolled coils is that when the rolled coils are of a synchronous type, they are welded and connected by a welder via a payoff reel, a double cant shear, and then transported to a continuous annealing facility.

However, it may not be possible to weld rolled coils made of different steels, and as a method for joining coils made of different steels that cannot be butt resistance welded, coil connecting members made of different steels are prepared in advance and the coils are welded together. Weld both ends of the connecting member to the different steel coil. For example, Figs. 5 and 6 show how to connect stainless steel and titanium materials.
To explain the conventional method shown in the figure, a plurality of through holes are bored in each of the stainless steel connection plate 00 and the titanium connection plate (+21), and the stainless steel connection plate (10 and titanium connection plate O
The steel plates of different steel types are connected by a plurality of stainless steel rivets by overlapping the two steel plates Z and aligning their respective through holes.

This connection method has the problem that the rivet θω may come off due to high temperature and tension, and cracks may occur near the through hole into which the rivet 03) is inserted.

In addition, as another connection method, as shown in Figs. 7 and 8, a stainless steel connection plate (11) and a titanium connection plate (
+21, and insert the protruding part of the stainless steel connecting plate (11) into the long hole 04+ drilled in the titanium connecting plate 0.
1 is inserted into an elongated hole 04 drilled in the stainless steel connection plate θ1), the respective protrusions are bent together, and the peripheries are welded to fix and connect.

However, even with this connection method, there is a problem that cracks may occur at long corners or cracks at bent portions due to the high temperature and tension when passing through the continuous annealing equipment.

As mentioned above, using a coil connecting member made of different steel types, the stainless steel connecting plate (11) of this coil connecting member is used.
One end of the rolled stainless steel coil is welded and connected to the titanium connecting plate 02) of the coil connecting member, and the two ends are continuously transported into a continuous annealing facility.

(Problem to be Solved by the Invention) When attempting to connect rolled coils of different steels for which butt resistance welding of rolled coils is not possible, a method of connecting rolled coils of different steels via a coil connecting member. is taken.

As a method for connecting coil connecting members composed of steel plates of different steel types, there are two known methods: connecting the steel plates of different steel types with a plurality of rivets, and connecting steel plates of the same steel type by bending the protrusions of the steel plates of different steel types. However, due to the high temperature and tension when passing through the continuous annealing equipment, there is a problem that cracks may occur near the drilled through holes, rivets may be damaged, or bent portions may crack.

In addition, in the connection method of these coil connection members, the joints are reliable! There is a problem that the page length is low and it cannot be reused.

In addition, when the coils of different steel types are joined through a coil connecting member in which steel plates of different steel types are connected with rivets and then passed through the continuous annealing equipment, it may break or the rolls in the continuous annealing equipment may be damaged by the head. There is a fear.

Furthermore, if the coil connecting member breaks in the continuous annealing equipment, there is a problem that the equipment will be stopped for a long time.

The present invention provides a method for connecting rolled coils in which coils of different steel types can be connected using a coil connecting member that can firmly connect steel plates of different steel types constituting the coil connection member and that can be used repeatedly. The purpose is to

(Means for Solving the Problems) In order to achieve the above-mentioned object, the rolled coil connecting method of the present invention connects rolled coils of different steels to be connected by a coil connecting member. In the method, two connecting plates made of the same material as the rolled coil to be connected are provided with a plurality of through holes reinforced with reinforcing plates,
After overlapping so that the through holes temporarily drilled for each connection match, two types of sewing insert plates made of the same material as the rolled coil to be connected are inserted into the through holes and communicated with each other, and one of these sewing insert plates is is fixed to a connecting plate made of the same material as the binding plate, the other sewing plate is fixed to another connecting plate, the two connecting plates are joined, and then the connecting plate is attached to a covering made of the same material as the connecting plate. This method connects rolled coils of different steel types by connecting them to connected rolled coils.

(Function) A plurality of through holes are provided in two connecting plates made of the same material as the rolled coils to be connected of different steels, and the plurality of mutually drilled through holes in the connecting plates coincide with each other. By overlapping the connection plates in this manner, two types of sewing plates made of the same material as the rolled coil to be connected can be connected to the through holes by sewing them in a straight line.

Since these sewing insert plates are made of the same material as the two connecting plates, one end of one communicating sewing insert plate is fixed to the connecting plate made of the same material, and one end of the other sewing insert plate is fixed to the other sewing insert plate. It sticks to the connection plate.

For example, as mentioned above, with two types of sewing inserts, two connection boards are connected by passing through the through holes in which they are overlapped one after another and sewing in a straight line, and one end of each sewing board is connected to the same The other end of the sewing insert plate, which is fixed to the connecting plate made of the material and pulled out from the final through hole, can be bent and fixed to the exposed portion of the sewing insert plate.

Since the through holes of the two connecting plates are sewn in a straight line with the stitching plate in this way, the two connecting plates can be firmly connected.

Furthermore, by providing a reinforcing material around the through-holes of the two connecting plates, cracking near the through-holes can be prevented.

After that, each of the two connecting plates, which are made of the same material as the rolled coil to be connected that constitutes the coil connecting member, is made different! It is possible to connect rolled coils of different steel types by welding one end of the iI type rolled coil.

(Example) An example of a coil connecting member used in the method for connecting rolled coils of different steels according to the present invention will be described below with reference to FIGS. 1 to 4.

As one example, the connection plate width is too wide and the plate thickness is 1°5.
Figures 1 and 2 about coil connecting members when connecting rolled coils of 11I11 stainless steel and titanium materials.
This will be explained using figures.

The first connecting plate (1) made of stainless steel and the second connecting plate (2) made of titanium are connected to the first sewing plate (3) made of stainless steel (
Holes are formed in the first connecting plate (11) and the second connecting plate (2) by using the second vI insertion plate (4) (4) made of titanium material and the holes are formed in the first connecting plate (11) and the second connecting plate (2). ) and are connected by sewing them together.

One end of each of the first sewing plates (3) (3) is welded to the first connecting plate (+1 (1), and the other end is welded to the final elongated hole (
5) The punch is bent at the position where it comes out from (5), and is welded and fixed to the top surface of the exposed first sewing insert plate (31(3)).

Similarly, the 21st i! One end of the insert plate (4) (4) is welded to the second connection plate (2) (2), and the other end is bent at the position where it comes out from the final elongated hole (5) (5) and exposed. It is welded and fixed to the upper surface of the same second sewing insert plate (4) (4).

As mentioned above, the first connection plate (1) and the second connection plate (2)
and the first sewing insert plate (3) (3) and the second sewing insert plate (41(4)), the first connecting plate (]) and the second
It is firmly connected to the connecting plate (2).

In addition, the elongated hole (5) is provided with a first reinforcing plate (61 (6)) made of stainless steel or a second reinforcing plate (7) made of titanium material.
is welded.

Hereinafter, specific examples of the first connection plate (1) and the second connection plate (2), which are the main components of the coil connection member, will be explained based on FIG. 3.

The first connecting plate (1) made of stainless steel and the second connecting plate (2) made of titanium have an overlapping allowance and a length that can be welded with the same type of coil, and have a thickness of 1.5 m, a width of 1000 m, and a length of approximately 150 m.
Using 0ma+, long (5) (10m x 110
mm ) at 22 locations, and both ends of the long (5) are drilled to disperse stress.

In addition, the first stainless steel material! The insert plate (3) has a thickness of 1.5 meters, a width of 100 meters, and a length of about 1300 meters.The second insert plate (4) made of titanium has a thickness of 1.8 meters and a width of 1 inch.
The length is approximately 1,300 mm.

The first reinforcing plate (6) made of stainless steel has a thickness of 1.5 wa.
The second reinforcing plate (7) made of titanium has a thickness of 1.8 mm, a plate width of 1180 m, and a length of 150 m.
It is set as 0 yen.

Next, the procedure for connecting rolled coils using each of the above members will be explained based on FIGS. 4(a), (b), (C), and (d).

Each long hole (
5), weld the second reinforcing plate (7) made of titanium material at 22 locations. Similarly to Fig. 4(a)L, attach the first connection plate (1) made of stainless steel material.
) The first reinforcing plate +6) (6) made of stainless steel is welded to the long hole (5) drilled in the hole (5).

Then, the first reinforcing plate (6) (6) and the second reinforcing plate (
7) Place the first connection plate (
1) and the second connection plate (2), and position them so that the long part (5) generally coincides with each other (FIG. 4(b)).

After that, the first sewing insert plate (3) made of stainless steel is inserted from the first connecting plate (1) side and sewing is performed sequentially while communicating the elongated holes (5), and similarly the second sewing insert plate (4) made of titanium material is ) from the second connecting plate (2) side and sew them together in sequence (Fig. 4 (C)).

Next, when the tip of the first sewing insert plate (3) extends approximately 300 m from the final elongated hole (5), bend it in the opposite direction to the direction of movement and connect the elongated hole [5] with the elongated hole (5). 1st exposed at interval
It is stacked on the sewing plate (3), and the leading end is welded, and the rear end is welded to the first connecting plate (1) (FIG. 4(d)).

In the same way, bend the tip of the second sewing insert slope (4), stack it on the second sewing insert plate (4), weld the tip, and weld the rear end to the second connecting plate (2). I do.

In addition, the first sewing insert plate [3] and the second sewing insert Fi (4)
Since it is possible that the material may swell while passing through the continuous annealing equipment, the widthwise ends of the first connection plate (1) and the first sewing plate (3), also known as the second connection 1 (2) and both ends in the width direction of the second sewing insert plate (4) are welded and fixed.

As described above, when forming a coil connecting member and connecting a rolled stainless steel coil and a rolled titanium coil, one end of the rolled coil is attached to each of the first connecting plate and the second connecting plate of the coil connecting member. Rolled coils can be connected by welding.

Although conventional coil connecting members cannot be used repeatedly due to low joint reliability, the coil connecting member of the present invention can be used repeatedly 7 to 8 times.

(Effects of the Invention) The present invention provides a coil connecting member that can firmly connect connecting plates made of the same material as the connected rolled coils constituting the coil connecting member, and can be used repeatedly.

Furthermore, even if the rolled coils to be connected are connected by the coil connecting member and passed through the continuous annealing equipment, the rolls etc. will not be damaged and the connected parts of the rolled coils to be connected will not break, so the continuous annealing equipment can be used. It can be operated efficiently.

[Brief explanation of the drawing]

Figure 1 is a plan view of the coil connecting member used in the present invention, Figure 2 is a plan view of the coil connecting member used in the present invention;
The figure is a sectional view taken along the line A-A in Figure 1, Figure 3 is a plan view showing a specific example of the main components of the coil connecting member, and Figure 4 (a) (
b) (C) and (d) are explanatory diagrams showing the procedure for forming a coil connecting member, FIG. 5 is a plan view of a coil connecting member showing the prior art, and FIG. 6 is a sectional view taken along line AA in FIG. 5. Fig. 7 is a plan view of a coil connecting member showing the prior art, and Fig. 8 is A of Fig. 7.
-A sectional view. (1)-first connection plate, (2)-second connection plate, (3)-first sewing insert plate, (4)-second sewing insert plate, (5)-long hole, (61-first Reinforcement plate, (7) - Second reinforcement plate. Patent applicant: Kobe Steel, Ltd. Agent Patent attorney: Akira Kanamaru - Figure 1 Figure 5 Figure 6 Figure 8

Claims (1)

[Claims] A method for connecting rolled coils of different steels in which rolled coils of different steels are connected by a coil connecting member, the rolled coils being made of the same material as the rolled coils having a plurality of through holes reinforced with reinforcing plates. After overlapping the two connection plates formed by the above so that the through holes drilled in each connection plate match, two types of sewing insert plates made of the same material as the rolled coil to be connected are inserted into the through holes. are inserted into communication, one of these sewing insert plates is fixed to a connecting plate made of the same material as the sewing insert plate, the other sewing insert plate is fixed to another connecting plate, and the two connecting plates are joined, A method for connecting rolled coils of different steels, characterized in that the rolled coils of different steels are connected by connecting the connection plate to a connected rolled coil made of the same material as the connection plate.