KR100622524B1 - Apparatus and method for hot bonding metal plates - Google Patents

Abstract

The present invention relates to a joining apparatus and a joining method for joining while overlapping the front surfaces of two sheets of heated metal sheets with each other by plastic flow of hot metal superposed by a strong pressure in a sealed joint mold. To this end, when two heated metal sheets are inserted into the joining mold through the trumpet openings in each direction of the joining mold, the two sheets of metal sheet overlapping surfaces to be overlapped by the shaving die blade inserted inside the mold are cut and cut. After overlapping each other with the oxide film removed and pressing and forging with a strong pressure in the vertical direction on the overlapped surface, it is possible not only to obtain a strong compressive force for joining due to the structure of the sealed mold, but also to overlap the excess material. Simultaneously with bonding, the plastic mold flows into the empty metal storage space formed by the shaving mold and clamp surface, which is a unique structure inside the mold, and the oxide film on the end face of the metal sheet is also pushed into the empty space, leading to the overlapping surface of the sheet and the end surface. Plastic flow bonding is performed only with pure metal with the oxide film removed It relates to bonding apparatus and the bonding method to that.

Plastic flow bonding, solid state bonding, single welding, superposition, metal plate, oxide film removal, saving mold, bonding mold, hot rolled material, hot continuous rolling.

Description

Apparatus and method for hot bonding metal plates

1 is a cross-sectional view of a plastic flow joint mold

Figure 2 is a process of overlapping by inserting a hot metal sheet into the bonding mold

Figure 3 is a process flow diagram of the plastic flow-bonding of the overlapping metal sheet in the bonding mold

4 is a perspective view of an upper joining mold and a lower clamp connected thereto;

Figure 5 is a perspective view of the lower joint mold and the upper clamp connected thereto

6 is a perspective view of a saving mold inserted in the corner of the upper and lower clamps

Fig. 7 is a sectional view of the empty space for storing the shaving mold blade and the shaving waste.

8 is a front view of a metal sheet plastic flow bonding apparatus

9 is a side view of a metal plate plastic flow bonding apparatus with a wheel for movement

10 is a perspective view of a metal sheet plastic flow bonding apparatus with a wheel for moving

<Description of the symbols for the main parts of the drawings>

DESCRIPTION OF SYMBOLS 1: Metal plate material 2: Left metal plate material 3: Right metal plate material 4: Metal plate end surface 5: Metal plate edge overlapping surface 6: Excess metal 7: Upper joining mold 8: Lower joining mold 9: Upper clamp 10: Lower clamp 11: Shaving mold 12: Shaving mold blade 12a: Curved surface 13: Shaving waste storage space 14: Excess metal storage space 15: Excess metal extraction spring 16: Clamp protruding spring 17: Clamp position fixing stopper 18: Sliding rod 19 : Bugle inlet 20: Insertion roller part 21: Clamping hydraulic cylinder 22: Joint load hydraulic cylinder 23: Joining mold support frame 24: Joining mold wheel 25: Hydraulic tank 26: Hydraulic pump 27: Heating heater insertion space

A method of joining the tip portions of two sheets of metal sheets can generally be joined by welding or the like, but the melting method is difficult in the case of joining thick sheets or metal sheets of different types. In particular, the use of the melting method is limited in the case of rapidly rolling and continuously rolling the moving rolling material to continuously roll the thick metal sheet during the hot rolling process.

Therefore, the pressing method is used as a method of joining two metal sheets during the hot rolling process. In order to be able to press welding, an oxide film removing process must be additionally performed because it must be bonded after removing impurities such as oxide films on the joining surfaces of the two metal sheets. However, in recent years, a method of simultaneously performing an oxide film removing process and a bonding process has been studied.

Typically, as indicated in Patent Publication No. 2001-0062404, the two metal plates are overlapped, and the upper and lower shear knives with the projections of the triangular prism are set at an inclination angle, not perpendicular to the thickness of the plate, so as not to completely cut the metal sheets. Pressing force is applied at the sheared new surface to join. At this time, in order to improve the bonding strength, the triangular projection is clamped to apply a compressive load to the joint surface, and it is cut diagonally, the joint surface is inclined in the thickness direction, and is rolled by continuous finishing rolling so that the joint becomes even better when thin. . However, the clamping by the triangular protrusion may not only reduce the pressure load but also cause problems such as scratches caused by the clamping of the protrusion.

In addition, as pointed out in Korean Patent No. 10-0293284, in order to increase the joint strength in the longitudinal direction, the ends of the two metal sheets joined together have an uneven shape, and when they are mutually fitted, they are pressed against each other by giving an angle to the front end surface of the uneven parts. It is characterized in that it is required, but the additional cutting process of irregular shape is required, and there is a limit in obtaining the pressure necessary for the pressure welding due to the inclined angle of the shear surface.

In Patent Registration No. 10-0382011, while overlapping the plates, while holding the two plates with clamps, the two sheared sheets are sheared with edge blades based on one clamp surface, and the two joints are fixed with two clamps to join the joint loads. It is characteristic to make it.

As described above, the method for joining continuously and simultaneously with hot rolling has a form in which a new surface is formed on the front end face of the metal sheet to be joined and pressure is applied in the longitudinal direction by a clamp.

In the above methods, a new surface is formed by a shearing mold and a joining pressure is applied by relatively simple clamping to join the end faces of the plate, but on the contrary, as shown in Patent Registration No. 10-0261204, There is a method of superimposing surfaces and then constructing the joint surface on the overlapping contact surfaces. This method is characterized by joining the overlapping plates by pressing the joints mechanically after mechanically removing them under reduced salt atmosphere to remove the oxide film from the joint surface. Disadvantage of this superposition method is not to join the front end surface of the plate but to join the overlapped surface part, the oxide film removal process must be preceded and the material is pushed in the width direction of the plate so that the width of the plate is widened to trim the additional width. The disadvantage is that it must be processed.

However, in the present invention, the joint surface is formed on the overlapping plate surface and is compressed in the vertical direction to the overlapping surface, so that the empty space is made inside the closed mold by the amount of excess material that is pushed out instead of the material being pushed out in the plate width direction. In this space, the excess material and the oxide film residue on the plate front end are pushed out, so that the two metal plates are pressed together with strong plastic flow pressure, and the oxide film removal at the overlapping surface is performed when the two metal plates are inserted into the joining mold. The plate edge overlapping surface is saved by the shaving mold blade placed on the tip surface so that the oxide film is removed and the oxide film is collected in the empty space in front of the blade of the shaving mold. The removal of the oxide film at the tip of the two metal sheets is a separate At the same time, the cutting edge is flowed into the empty space of the saving mold without the cutting process, and as the bonding progresses, it is pushed out into the empty space inside the saving mold outside the plastic flow area to form the dead metal zone and automatically It is characterized in that the pure metals are pressed together by removing the It is characterized by a strong bonding and oxide film removal at the same time without the need for a prior process for removing the oxide film and a trimming process for the additional treatment of excess metal, which is a disadvantage of conventional bonding methods by the conventional superposition.

In addition, in the case of the hot continuous rolling process in which the metal sheet is moved, the leading end surface of the trailing rolled material is automatically inserted into the inside of the joint through the left trumpet inlet of the joint by the moving inertia force of the trailing hot rolled member. The joining mold movement wheel is attached to the lower part of the joining device so that the joining mold can be moved through the material and through the trumpet inlet of the joining mold, where the rear end surface of the preceding rolling material stopped on the right side by the moving joining mold moves. It is characterized in that the two rolled materials are automatically overlapped at the position of the plate material for joining so as to be automatically inserted into the inside so that they can be joined while moving.

Among the methods of joining two metal sheets, a problem that the joining method by pressure joining against the end faces of each other is to be solved is that the length is longer than the thickness of the cross section due to the nature of the sheet, so that pressure cannot be applied perpendicularly to the end face of the sheet. Therefore, instead of facing the front end face of the plate, it is common to superimpose the plate to apply the shear load and join by shear force. In case of using this method, the two plates are fixed by clamping, and the pressure is applied in the vertical direction on the plate surface to shear the overlapping plates while the clamping pressure is applied in the longitudinal direction. . At this time, the bonding is performed at the same time as the shear, so that a new bonding surface is formed so that impurities such as oxide film can be bonded without any intervention on the bonding surface, but the pressure required for the bonding force depends on the shear and clamping force. Since the joint pressure applied to the vertical weakening disadvantage has been studied in the direction of improving the shape of the shear knife in order to improve this problem in the conventional patent technology.

In addition, when the metal sheet is overlapped and joined at a strong forging pressure instead of shearing, the joining pressure is strong, but a preliminary step for removing the oxide film from the joining surface is required. As the width is increased, the additional width is cut by the additional trimming process. Therefore, in order to improve this problem, there is an attempt to join the joints without the need for an additional trimming process since the increased width becomes the same as the existing plate width by reducing the width of the overlapping end portions of the overlapping plates. There is a disadvantage to be processed.

Therefore, in the present invention, the excess metal of the plate overlapped with the clamp having a strong clamping force to maintain the strong bonding pressure and prevent the movement of the two plates by using the vertical pressure on the overlapping surface applied to the overlapping portion when joining the overlapping plate. Instead of being pushed out in the width direction, it is filled with the empty space of the shaving mold to solve the spread in the width direction, which is a disadvantage of the superposition method, and also to remove the excess metal with the oxide residue on the front end surface of the plate as it is pushed out into the empty space. Instead of making a new surface by shearing the existing overlapping plate as a structure of empty space in the mold, adopting the method of removing oxide film by plastic flow to create plastic flow between the overlapping plates with strong pressure inside the sealed joint mold. To improve bonding strength over existing methods The oxide film on the surface of the sheet is removed by saving the overlapping surface to be joined by the blade of the shaving mold inside the mold when the sheet material is inserted into the bonding mold to remove the oxide film, and the residue is accumulated in the empty space in front of the shaving blade. The technical problem to be solved by the present invention is to be able to perform the oxide film removal process at the same time as the bonding method by the strong bonding force, which is a problem to be solved in the conventional bonding method, as a method to remove after the bonding is completed.

In addition, in order to be able to join the metal plate moving in the continuous rolling at the same time as the movement, the front end surface of the post rolling material and the rear end surface of the preceding rolling material are easily inserted into the joining mold. It is gradually enlarged and made into a trumpet shape so that the cross-section of the leading and trailing rolling material can be inserted into the joining mold, and an insertion roller is attached to the front of each inlet of the joining mold so that the rolled material can be pushed into the joining mold. The technical problem to be solved by the present invention is to precisely adjust the joining position of the metal plate to be joined, and to have several moving wheels attached to the lower part of the joining mold so that the joining mold moves together with the rolled plate being moved.

In order to join the overlapping plate by shearing force, the present inventions have a triangular projection with a triangular protrusion in the non-overlapping shear state. While the front end surface of the plate is joined by the joining pressure due to the clamping force of the protrusion, the present invention is overlapping plate by overlapping the upper joining mold 7 and the lower joining mold 8 as shown in FIG. The present inventors have a structure in which the overlapping surface of the plate is joined at the same time as the removal of the oxide film by the saving mold 11 inserted at the edge of the clamp when compressing by pressing a compressive load perpendicular to the overlapping surface 5. It is different from the method of joining the superposed plate by a shear knife.

However, the overlapping upper and lower joining molds (7) (8) can obtain a stronger bonding force on the joining surface than the conventional shear joining knife, but the oxide film and the plate front end (4) of the overlapping metal sheet overlapping surface (5) can be obtained. The problem is that the oxide film must also be removed at the same time, and a process of trimming the excess metal 6 which is pushed out in the width direction of the plate in order to become a single plate after bonding is added.

In order to improve the shortcomings and use a single welding method to obtain a strong bonding force, the present invention overlaps the two sheets of metal sheet 1 in a state in which the upper bonding mold 7 and the lower bonding mold 8 are overlapped as shown in FIG. 1. The oxide film on the tip overlap surface (5) is removed by the shaving blade (12) inserted into the bonding mold, and at the same time, an empty space is placed in front of the shaving mold blade (12), and the plastic film is flowed while the oxide film is stored. When the excess metal (6) to the trapezoidal excess metal storage space (14) of the shaving mold (11) and at the same time to discharge the oxide film at the plate front end (4) to solve the above disadvantages at once In the process, the superposed sheets with strong bonding force were strongly bonded. To this end, FIG. 1 supports the front end face 4 of the plate 3 on the lower right side of the metal plate 1 in which the lower joint mold 8 is overlapped, and the upper joint mold 7 and the lower joint mold 8 are supported. As the two sheets of metal sheet 1 overlap each other in the same shape, the upper joining die 7 is placed between the overlapping portions of the upper and lower joining dies when the upper joining die 7 slides in close contact with the upper clamp 9. It is shown that the compressive load is transmitted on the overlapping plate which can be plastic flow bonded while pressing the overlapping metal plate.

FIG. 2 is a process diagram of inserting a metal sheet into a joining mold for plastic flow joining. As shown in FIG. 2 (a), a metal sheet 2 on the left side of the two sheet metals 1 to be joined is inserted into a roller part. When the metal plate is forcibly inserted in the left side of the left trumpet inlet 19 of the bonding mold by the 20, the protruding excess metal extraction spring 15 on the right side contracts due to the insertion force of the plate. The shaving cutting edge 12 of the shaving mold 11 of the shaving mold 11 allows the shaving cutting of the overlapping surface 5 of the left metal sheet 2 to peel off the oxide film of the oxide layer on the surface of the sheet to be overlapped. b) The sheet metal when the metal sheet 3 on the right side is forcibly inserted in the right direction of the right trumpet inlet portion 19 of the joining mold by the inserting roller portion 20 on the right side as shown in (c). Extruded excess metal extraction soup on the left by the insertion force of As the ring 15 contracts, the shaving dies 12 of the right and left sides of the shaving dies 11 are cut by the shaving dies 12 of the left and right metal plates 2 while the shaving dies 12 are cut. The process of superimposing the two sheets of metal sheet 1 in a pure metal state in the state of storing the oxide residue in the empty storage space 13 for storing the remaining garbage.

FIG. 3 is a process flow diagram of plastic flow joining a metal sheet inserted into a joining mold, and an upper part pairing a lower right mold 3 with a lower joining mold 8 at the lower right of the overlapping plates as shown in FIG. Clamp not to push to the right with the clamp (9) and clamp the left plate (2) on top of the overlapping plate so as not to be pushed to the left with the lower clamp (10) paired with the upper joint mold (7) The sheet metal (2) on the upper left side is prevented from spreading the plate in the width direction by the pair of joining molds and clamps, while the upper joining mold (7) slides downward by the joining load hydraulic cylinder (22). The superimposition surface 5 of the superposition surface 5 is shown to be superimposed so as to apply a pressing force on the superimposition surface 5 of the lower right plate metal 3 lying on the lower joining mold 8. FIG. 3 (b) is a view showing that when half of the amount of the left side metal plate 2 of the overlapped portion and half of the amount of the right side metal plate 3 overlapping are mixed together to cause plastic flow, FIG. As shown in Fig. 3 (c), the amount of excess metal 6, which is half of the amount of the left and right metal plates 2 and 3 of the overlapped portion, is curved and inclined surface 12a of the shaving mold 11 having a trapezoidal shape. The front end surface of the plate is surrounded by the upper clamp surface and the front end surface 4 of the metal plate 2 and pushed into the excess metal storage space 14 which is half the amount of the metal plate of the overlapping portion. 4 shows the process of allowing the remaining oxide film to be discharged to the empty space 14 together. In addition, as shown in Figure 3 (d), the edge of the bonding mold and the corner of the shaping mold meet the completion of the bonding and at the same time the operation of the trapezoidal saving mold 11 to complete the discharge of excess metal (6) to remove the oxide film And the process of joining two sheets of metal at the same time.

4 is a perspective view of an upper joining die 7 and a lower clamp 10 connected thereto, wherein the upper joining die 7 overlaps the metal sheet 1 to apply a joining load to the two superposed heated sheet metal 1. ), The male of the upper joining mold 7 and the female of the lower clamp 10 are engaged in a male and female form so as to lie up to the front end face 4 of the plate 2 on the upper left side and to accurately fix the overlapping position of the joint. The clamping hydraulic cylinder 21 and the lower clamp 10 of the upper joining die 7 are clamped to prevent the spreading of the sheet in the width direction by one structure and to clamp the plate placed between the male and female joining molds and the clamp. The structure connected by the rod is shown. A stage is formed to insert the saving mold 11 at the edge of the lower clamp, and an appropriate number of supports for supporting the saving mold 11 and the excess metal extraction spring 15 to be inserted into the lower clamp 10. The lower clamp 10 and the upper joining mold 7 in which the holes penetrate left and right are shown.

In addition, as shown in the perspective view of the lower joining mold 8 and the upper clamp 7 connected thereto in FIG. 5, the right inlet portion of the joining mold is a trumpet inlet portion 19 so as to easily insert two sheets of heated sheet into the joining mold. The female mold of the lower joining mold 8 and the male clamp of the upper clamp 9 are interlocked in the shape of male and female in order to accurately fix the overlapping position of the joint. The shape of the joining mold and the clamp prevents the spread of the plate in the width direction. Meanwhile, the clamping hydraulic cylinder 21 and the upper clamp 9 of the lower joining mold 8 are connected by a cylinder rod in order to clamp the plate between the male and female joining molds and the clamp. A stage is formed to insert the shaving mold 11 at the corner end, and a support for supporting the shaving mold 11 and a spring 15 for excess metal extraction are inserted. The upper clamp 9 and the lower joint mold 8 are shown in which a number of holes penetrate left and right.

As shown in FIGS. 6 and 7, the surface of the saving mold 11 inserted into the edge of the upper and lower clamps in contact with the upper and lower joining molds is used to remove the oxide film adhered to the surface of the metal plate 1. In front of the blade (12) and the blade having a shaving residue storage space (13), the shaving mold (11) by the tension of the excess metal extraction spring (15) in the second half of the shaving mold (11) protrudes When two sheets are inserted at the same time, the spring shrinks due to the insertion force of the sheet, and the shaving cutting edges 12 of the saving mold 11 save the overlapping surfaces of the overlapping plates, thereby removing the oxide film on the overlapping surface. Shaving gold to accommodate the excess metal (6) and the film residue on the plate front end (4) due to the spread of the sheet when the overlapping sheet is compressed and plastic flow bonding proceeds. An excess metal storage space 14 surrounded by the curved inclined surface 12a, the surface of the upper clamp 9, and the metal plate front end surface 4 of (11), the volume of which is half the amount of the metal plate material of the overlapped portion (14). In order to form the shape and shape of the shaving mold 11 having a trapezoidal curved inclined surface 12a, the upper and lower joining molds are extruded when the upper and lower joining molds are pushed out, and the plate end surface 4 is removed. To make it easier to save, the inclined surface of the shaving mold 11 is curved to easily receive the excess metal 6 that is pushed out, and the corner of the bonding mold and the corner of the shaving mold meet to complete the joining and the excess metal (6) Excess metal (6) filling the empty metal storage space (14) and oxide film jagged for the restoring force of the spring mounted on the latter part of the saving mold (11) when the upper and lower joining mold is separated A it shows the shape of the shaving die 11, characterized in the method for discharging.

Then, as shown in FIG. 8, when the upper joining mold 7 on the left is subjected to a compressive load to the overlapping plate by the joining load hydraulic cylinder 22 connected to the appropriate number of cylinder rods installed on the upper joining mold 7. The upper part of the upper joining die 7 is extended so that the sliding plate 18 connected to the upper part of the upper clamp 9 can pass through the upper clamp 9 so that the upper plate 9 can be compressed while sliding. The upper joint mold 7 on the left side and the upper clamp 9 on the right side are in close contact with each other and slide, and the upper joint mold 7 as shown in FIG. A clamp position fixing stopper (17) is attached to the bottom of the clamp (10) so that it can move as much as the thickness of the plate, and the clamp protrusion spring (16) is attached to the upper and lower ends of the upper and lower clamps. When the joining mold is separated after joining, it is shown that the appropriate number of clamp protrusion springs 16 is mounted to protrude the upper and lower clamps up and down by the restoring force of the spring so as to discharge the excess metal 6 and the oxide residue. Doing.

8 and 9 and 10, the upper joining mold 7 is fixed to the upper part of the support frame 23, and the lower joining mold 8 is fixed to the lower part of the support frame 23 so that the joining mold can have an appropriate number of posts. Under the lower end of the joining mold supporting frame 23, which is connected and supported, there is a joining mold movement wheel 24 directed toward the trumpet inlet portion 19 of the joining mold, so that the trailing rolled plate being moved is the trumpet on the left side of the joining mold. Post-rolling material to be joined by automatically inserting the rear end of the pre-rolled material in which the inlet of the trumpet inlet 19 on the right side of the joining mold is stopped when it is inserted into the inlet 19 and pushes the joining mold together. And joining molds move together at the same speed while joining the moving hot rolled material, which is characterized by the joining of the rolled material afterwards. A front view, a side view, and a perspective view of the flow bonding apparatus are respectively shown.

Two relatively thick metal sheets (1), which are difficult to weld by the melting method, are pressed together with a strong forging pressure and are bonded while causing plastic flow. Therefore, a strong bonding force can be obtained, and superimposed with the end face of the plate due to good solid state joining and a saving mold. Since it can be bonded simultaneously with the removal of the oxide on the surface, the existing conventional oxide removal process is reduced, thereby improving productivity. In addition, the rolling material moving through the trumpet inlet of the joining mold is placed in the correct position in the joining mold to enable simple and quick joining, and the rolling wheel is attached to the joining mold so that the rolled material in the joining can be joined to hot rolling. Continuous rolling in the process is possible. In addition, since the bonding is performed by plastic flow, it is possible to join dissimilar metals, and thus, the application is expected in the future.

Claims (14)

Joining mold support frame for supporting the upper and lower joining mold; An upper joining mold fixed to an upper portion of the joining mold support frame and having a clamping hydraulic cylinder for clamping a metal plate; A lower joining mold fixed to a lower portion of the joining mold support frame and having a clamping hydraulic cylinder attached thereto to clamp the metal sheet; A saving mold having a shaving mold blade for saving an oxide film of the metal sheet and excess metal; A lower clamp connected to the clamping hydraulic cylinder of the upper joining mold and the cylinder rod and having a shaving mold moving horizontally therein; An upper clamp connected to a clamping hydraulic cylinder of the lower joining mold and a cylinder rod, and having a shaving mold moving horizontally therein; Metal plate plastic flow bonding apparatus for joining the metal sheet by applying a compressive load to the overlapping hot metal sheet consisting of. The upper joining mold and the upper clamp are formed in a male type, the lower clamp is formed in an upper joining mold, and the lower joining mold is formed in a female type surrounding the upper clamp, respectively, the upper joining mold of the male type and the lower clamp of the female type, A metal plate plastic flow joining device, characterized in that the female lower joining mold and the male upper clamp is in close contact with each other. According to claim 1, there are several rods and several excess metal extraction springs formed on one side of the shaving mold, and the insertion holes into which they are inserted are horizontally drilled at the bottom of the upper clamp and the top of the lower clamp, respectively. Metal sheet plastic flow bonding device characterized in that the support for supporting the spring for metal extraction is formed in the spring insertion hole. 4. The plastic flow bonding apparatus according to claim 3, wherein the shaving mold is formed as a curved inclined surface in a direction opposite to several rods on one side of the shaving mold. 2. The plastic fluid bonding apparatus according to claim 1, wherein an empty space for storing the shaving dregs is formed on one surface of the shaving mold in contact with the metal sheet. The metal-plate plastic flow joining device according to claim 1, wherein the trumpet inlet portion into which the metal sheet is inserted is formed on the left and right sides of the upper and lower joint molds and the upper and lower clamps, and the size of the trumpet inlet portion is gradually increased to the outside. The sliding rod is fixed to the upper and lower ends of the upper and lower clamps, respectively, and a clamp position fixing stopper is provided at the end of the sliding rod to adjust the position of the upper and lower clamps according to the thickness of the metal plate. Metal sheet plastic flow bonding apparatus. 8. The metal sheet plastic flow bonding apparatus according to claim 7, wherein the sliding rod is supported by a clamp protrusion spring. 8. The apparatus of claim 7, wherein the upper end of the upper joining mold extends over the upper clamp, and the sliding rod connected to the upper end of the upper joining mold passes through the extending portion of the upper joining mold. The metal-flow plastic flow joining device according to claim 1, wherein the joining mold wheel is attached to the bottom surface of the joining mold support frame. Bonding in which the saving mold protrudes due to the tension of the excess metal extraction spring in the latter part of the saving mold inserted at the edge of the upper and lower clamps in contact with the upper and lower joining molds for joining the two heated metal sheets together. When the two sheets of sheet metal to be joined into the mold are simultaneously inserted into the mold by simultaneously inserting the metal sheet in both directions of the right and left trumpet inlet of the joining mold, the excess metal extraction spring contracts due to the sheet insertion force. The shaving mold blade of the shaving mold is used to save the metal sheet edge overlapping surface of the sheet, so that the oxide film of each oxide layer on the overlapping plate surface is peeled off, and the oxide residue is stored in the empty space for storing the dregs directly in front of the shaving mold blade. With two sheets of metal plate in the state of pure metal Plastic flow bonding method characterized in that for superimposing. Applying a compressive load to the overlapping metal plate, the overlapping amount of the left metal plate and the overlapping amount of the right metal plate are mixed together to create plastic flow, and the amount of excess metal in the overlapping part that is pushed out when bonding It is pushed into the excess metal storage space surrounded by the surface of the inclined surface and the upper clamp and the end face of the metal sheet, and the oxide residue left on the end face of the metal sheet is discharged into the empty metal storage space to save the corners of the upper joint mold and the upper clamp. Metal sheet plastic flow bonding method characterized in that when the edge of the mold is horizontally bonded and at the same time the discharge of excess metal is completed. Leading metal where the trumpet inlet on the right side of the joining mold stops when the trailing metal plate being moved by the joining mold moving wheel under the bottom of the bottom of the joining mold support frame is inserted into the trumpet inlet on the left side of the joining mold and moves together while pushing the joining mold together. The rear end of the sheet is inserted into the joining mold to overlap the preceding and following metal sheets to be joined, and the joining mold moves together at the same speed and is clamped by the upper and lower clamps, followed by the preloaded metal by the compression load of the upper joining mold. Metal sheet plastic flow joining method for joining sheets. The plastic sheet metal flow joining method according to any one of claims 11 to 13, which joins two sheets of dissimilar metal sheets having different kinds of metal sheets to be joined.

Images