DE2152630A1 - Method and device for producing metallic connections, in particular in tin cans - Google Patents

Description

PZNELOPS JANA VS31Y LUC, l8 rue Fourcroy * Earis 17e, France

Method and device for producing metallic connections, in particular in the case of tin cans.

The present invention relates to methods of manufacture of adhesive or cohesive connections between metal parts in the manufacture of vessels, drums or containers made of metal. In the present description, the term "vessels" Include troneels and containers. An "adhesive connection" is understood to mean a connection in which one There is a boundary surface between the parts to be connected to one another, under a "cohesive connection" such a case which the interface has disappeared, at least insofar as it is visible, so that the parts that are connected to one another form a unit with one another.

With the invention, this connection is achieved via a friction process. With this one or both metal parts are through Treated friction effect by means of a reaming tool, namely

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either at the moment when the connection between the parts is formed, or immediately beforehand. The connection usually takes the form of a seam line. These are metallurgically homogeneous, continuous, adhering to one another dry connection seams possible.

A dry joint is one that does not have a binding agent, such as solder or plastic, between the is used to connect parts. A 'metallurgical homogeneous, continuous joint is one in which the metallurgical properties of the joint do not change significantly along the joining seam line.

The connection process in this process is currently unknown. It requires energy from a tool that is used to achieve the treatment, e.g. on an outer surface of the assembly of materials to be joined is to be applied to the interfaces, but the process is fundamentally different from such pasts, such as friction welding, (both parts being partially fused by rubbing against each other until fusing and that they are then pressed together under high Pressing are upset), hammer welding, (whereby both parts are directly connected to each other by the combined influence of heat and pressure on the parts are connected to each other) or that they are connected to each other by thermal means (where essentially a tape of hot melt adhesive applied to one edge of an overlap portion of a seam and in hot condition or after reheating the other edge under pressure which is maintained during a cooling period is applied to the other part). Although according to the invention a certain amount of heat between the Tool and the part treated with the tool is created.

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this heat need only be so high that the material is macroscopically melted, although it is also a definite one Pressure is applied, this pressure only needs to be so high that the parts are held in intimate contact with one another, and can be orders of magnitude less than pressures required in friction welding or hammer welding · Self in the case in which a metallic or non-metallic coating or an intermediate layer is provided between the metal parts «- As can be seen, this does not need to be "converted into the liquid state" during the process. Such a topcoat or such a layer is achieved even by the rubbing treatment due to the same, unknown process

The main field of application of the method according to the invention is the production of the side seams of an "overlap seam ^{1" of} a vessel, for example one in which opposite edges of a web are arranged one above the other so that they overlap at the end and in this position without overfolding or bead formation, but the invention can also be applied to the formation of other connections in or with vessels (e.g. a seam between an upper or a lower closure and the wall of the vessel or a joint, or a point for the attachment of an opening device) or other types of side seams (e.g. butt joints, reinforcement seals, stepped seals, roll-around seals and application seals) Connect two (or multiple) separate items are used; the materials of the interconnected parts can be the same or "different".

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In particular, the invention is based on using tinplate (tin-plated sheet) or tin-free sheet metal as the metal will.

The normal way to join tinplate in manufacture of containers is done in such a way that the edges are mechanically locked and folded over one another to form a double seam will. To make this type of seam fluid tight, liquid solder is introduced into the seam and pressurized to form the joint. According to the method according to the invention, there are neither double seams or solder is required to form a joint, even with a narrow 1.5 mm joint Width, the sealing strength can be 100 kg / inch, which is very economical not only in terms of the materials required in a container, but also in the actual container manufacturing process itself.

Tin-free sheet metal is increasingly used in industry, particularly for carbonated beverages and other soft drinks, because it is a lower cost raw material than tinplate. However, the welding difficulties were so great that the initial economic advantage was no longer given in the finished container. This material can also be connected by the method according to the invention, and it is not necessary to remove the normal chromium / chromium oxide coating beforehand. These sheets are usually provided with an organic coating on one side as corrosion protection and a substrate on the other to accommodate printing inks both coatings are compatible and a strong adhesion results (see. RF Ellis "Modern Packaging * ⁴ March 1970, pages 77-80), or a hammer welding process,

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the one preparation of the overlapping edges by removing the chromium / chromium oxide coating or another coating and electrical heating of the metal in the seam surface provides high temperatures as well as the application of pressures high enough to make the thickness of the overlap double Value is reduced to 1.7 times the thickness of each edge (Vf. T. Chiappe, aforementioned citation, pages 82-84).

In carrying out the method according to the invention, there is no need to use liquid adhesives; neither is it It is necessary to prepare the parts that are to be joined together in a special way - even if aluminum is used, the oxide layer does not normally need to be removed. Even if a non-metallic coating is on If a metal part is present, it is not necessary to prime the other metal part in order to receive it other way to prepare.

An investigation of connections between metals produced by the method according to the invention at the interfaces of the overlapping Edges of tinplate have been produced show that it is possible, by changing process parameters, E.g. the pressure to obtain a connection seam that is formed by the cohesion of tin to tin coatings, or else a joining seam in which the tin coating is pressed against the outer edges of the seam surface, a hermetic one Sealing is achieved while the center of the joint is obtained by a cohesive weld of steel with steel will. In addition, it has been found that it is possible to place the joining seam directly on the edge of the outer to form overlapping container edge in such a way that it is flat and almost flush with the container body, whereby the appearance of the container is improved and the risk of the container edges touching another object is reduced

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can get caught.

Although the physical processes involved in connections between Metal with metal occur in the case of the process according to the invention, are not fully clarified, it is possible that a molecular Diffusion occurs at the interfaces in contact with one another. For some connections between steel and steel, which have been examined microscopically, is a recrystallization of the metal and a grain enlargement at the interfaces to the Formation of a cohesive joint occurred, with the flattened grain structure of the cold rolled steel in an equiaxed one Arrangement is converted, and these welds have tensile strengths that are above the metal or sheet metal itself lie. The metal does not melt.

The method of the present invention enables the formation of narrow seam lines (and is preferably carried out for their production) that have sufficient strength, so that the material in the seam area or in the overlap area can be reduced to one or two millimeters,

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so that about two to twenty mm or more of the metal plate can be saved in a medium-sized container. Oleichzeitig this provides a maximum area for printing or other decoration.

Although the process can be used to achieve metal-to-metal bonds, you can make containers that employ a material that acts as an adhesive in the seam surface.

Among the non-metallic materials that can be used as connecting means in connection with the invention Processes suitable include many thermoplastics and some thermosetting plastic materials. These can be found in the seam area either be used as a strip that is in

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liquid form is applied as an overlap edge and can then dry before the welding process, or as a strip a film that is inserted between the overlapping edges before the joining process, or as a pesticide material. Metal solder can also be used.

The metals can be coated with other metals - that The most common product is tinplate - including steel that is coated with metallic chrome, the other with a thin one Layer of chromium oxide (TFS-CT), or with chromate phosphate (CPT / 210} Rhodium and other metal substances is covered.

The binding effect of the rubbing treatment can be achieved through additional stimulation the area where the connection is made by a series of pressure and relief pulses or vibration in the sonic and ultrasonic range or electrical or thermal energy are given up. In all cases, however, is subject to the conditions of the application of the procedure either the size of the additional excitation is not itself sufficient to make the connection, so that no connection is formed if the rubbing treatment is not carried out, or in those cases in which the additional Excitation device alone generate appropriate connections can, are the connections that arise when this device is used together with the rubbing process, superior to those that arise when the auxiliary device for the excitation alone would be used. For example, the connections are better, or they can be faster or more efficient getting produced.

The use of an additional stimulus also enables that the energy used and applied by the reaming tool is less than the energy that would have been necessary to to achieve a connection in a given case, or vice versa, it achieves a reduction in the amount of energy that

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by a more expensive food source for additional stimulation is generated than would be required if such Device would be used alone.

If vibration energy using ultrasound energy has a value is abandoned in a manner known per se, preferably moves the reaming tool overlaps the armature on the opposite side from the ultrasonic tool to one another connecting parts. The ultrasonic tool can be arranged perpendicular or in a tangent or horizontal to the surface of the seam be. The effectiveness of the ultrasound procedure will depend on this Way, and for example pressures, which are normally required when performing the ultrasound procedure operated alone, can be reduced, as well as the resistance to the movement of the workpiece past the welding tool. As a result, the expensive ultrasonic tool will wear down quite considerably, while the welding speeds are greatly increased.

The range of vibration energy associated with the friction process is much larger than that normally used in ultrasound machines, and there can be arrangements used those with sound frequencies and also with high frequencies work up to very high frequencies.

The rubbing process can advantageously be combined with dielectric heating or sealing processes, including Impulse sealing, high frequency induction sealing, and high frequency thermal plating processes.

When used, it is necessary to have a continuous air pressure connection The friction wheel can serve as a grounded electrode, while a wheel on the opposite side of the workpiece with a high frequency generator can be connected, for example a

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Generator, the Lm 15 to 60 MKz range at 100 W to 10 kW is working; in this way connections are formed at relatively low loads and at high speeds. An electric arc or corona discharge between a high frequency power source on one side of the Workpiece and the reaming tool on the other hand also supports the connection.

To feed in heat as additional excitation, either a heated support, such as a wire, can be used on one side of the workpiece while the reaming tool is on the other Page acts, or the reaming tool can be heated itself, if either the load or the relative speed of the reaming tool should be reduced. In both cases, the temperature of the heated tools is preferred high and is thermostatically controlled.

Although the heat can be combined with the method according to the present invention, it is often convenient to use the friction wheel to cool itself or the carrier to which the arrangement is connected in order to avoid overheating.

The tool that is usually used is a rotating wheel made of smooth, hard material, in particular a wheel made from a metal such as mild steel, chromium nickel and molybdenum alloy steels, or tungsten carbide alloys. These Metal wheels can be specially treated, coated or hardened. The wheels can also be made from "Vespel" be that with either molybdenum disulfide, or carbon Graphite is filled, or made of "Tufnol" (a laminated synthetic resin reinforced with paper, fabric or asbestos is).

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These wheels are preferably 4 to 8 cm in diameter and run at a speed of about 3,000 to about 45,000 revolutions per minute

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in the case of rotating tools driven by frequency operated up to 100,000 rpm or more. A suitable motor for rotating the wheel is a 0.5 HP electric motor, the Consumes 600 W and enables speeds of up to 45,000 rpm, and which is also controlled by an adjustable transformer will.

The workpiece can be moved past the tool or the tool can be moved past the workpiece.

The pressure applied (either directly and completely by the tool, or partly by the tool, or partly applied by additional means exerting pressure) changes within wide limits according to the thickness and others Properties of the material or materials to be joined together. A maximum pressure that occurs during the point connection is used is about 160 kg / cm; this value is relatively high, but not in comparison to the order of magnitude the pressures used in friction welding or hammer welding. When joining the seams, the Wheel pressure exerted on the seam can be very small, for example 1 to 4.5 kg.

During the production of e.g. tin cans, the seam formation or the lid closing process and immediately afterwards, it is appropriate to have a good contact of the interfaces of the metal parts that are to be connected to each other, or connected have been to manufacture and maintain, with the help of a contact device that is independent of the actual Is a source of friction. In this way it is possible to apply honing pressure to the workpiece via the friction source, e.g. avoid a friction wheel and the energy requirements of the process like

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YES

also significantly reduce the wear and tear on the reaming tool. Every mark made by the tool on the

Metal surface with which it comes into contact / is placed on a miniature, mum reduced.

A more or less large thickness of the metal sheets, which are used to form can bodies, lids, flaps, upper parts, The use of floors or other parts that can be connected to one another by the method is not subject to any practical limitations; for example, four tin-plated sheet metal blanks (each 240 microns thick) are superimposed and connected in a single process. If necessary, it is also possible to have a source of friction on each the two sides of the seam to be produced. These can be arranged opposite one another or on opposite sides Work the sides of the seam slightly offset from one another.

The speeds to-m joining of box sutures can be very high, and the linear speed. At which one continuously ^ or discontinuously manufactured tube connected can exceed 1 m / sec. If a can lid or bottom with the can body before filling or If a lid is to be connected to the can body after filling, this can be done in various ways. A procedure is to insert the socket base in place and rotate its edge against a reaming tool that will remove the edge of the can body with the can bottom at the point of contact connects. Another method is to use the bottom of the can to put in place and a ring-shaped or barrel-shaped Place the reaming tool so that it rotates rapidly around an axis perpendicular to the line along which the bottom of the canister is located is connected to the sleeve body, and which has an annular surface which is parallel to the connection line

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that comes into contact with the edge of the bottom of the can, where it is to be connected to the body; the tool is intermittently applied to the bottom of the can. At this Depending on the type of procedure, speeds of 1 / 25th of a second or less are possible for the connection process. Same procedures can be used to attach opening devices to the can lid or body.

Generally speaking, the greater the thickness of the material between the tool and the surfaces to be connected, the more energy is applied over the tool must be, either by a higher pressure of the tool or by a higher speed.

The invention is explained below in conjunction with the drawing on the basis of exemplary embodiments. Ss show:

Figures 1 to 5 are reproductions of photomicrographs of interconnected metal sheets cut open along the seam are,

6, 7 and 8 first, second and third exemplary embodiments of a device, partially cut out, and

9a, 9b and 9c first, second and third special possibilities for forming a seam according to the invention.

Figures 1-3 represent magnifications of 5 times, 190 times and 1000 times enlargement of two sheets of tin-free steel (both with a chromium / chromium oxide coating) of each: 'H50 to 18o Ju Thickness. At the actual connection (i.e. the »middle part of Fig. 1 and all of the connection lines after Figures 2 and 3) a dry weld has given tensile strength without visible melting of the metal.

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Fig. 4 shows a 30O-fold enlargement of a seam in which cold-rolled sheet metal strips, each about 76 / * »thick together are connected. The rotating tool was applied to the surface of one of the tracks with a pressure of about 5 kg. at the formed cohesive dry joint cannot follow the actual joint line over the entire length and crystal grain growth has occurred at the interface. The grain structure of the metal is equiaxed and has changed from the normal "flattened, straightened" grain structure of cold rolled steel sheet, let it be but no signs of actual melting of the metal can be seen.

Fig. 5 shows a 560-fold enlargement of a dry bond of tin with tin between two sheets of tinplate, each of which is approximately 2j8μ . is thick. The tin of one track is cohesively bonded to the tin of the other track and no interface between the layers of tin is visible.

In Fig. 6 a sheet 3 of metal is bent so that the parallel Edges overlap each other and form an interrupted cylinder. These edges are connected to each other in such a way that a Pipe is created. A driven friction wheel 1 is provided which is fastened in a manner known per se and not shown and that works inside the cylinder. This friction wheel rotates at high speed, with this speed is significantly higher than the speed of movement of the web 3 · It can be opposite to the direction of movement or rotate with the direction of movement.

Opposite the wheel 1 is parallel to the overlapped edges of the Web a support wheel 2 is provided, which exerts a pressure on the moving at the same speed as the web 3

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Edges. In addition, the wheel 2 is attached in connection with a source of ultrasonic energy, so that the additional excitation the area is abandoned in which a seam is formed due to the action of the friction wheel 1.

In Fig. 7 is a similar web 3 is applied to sheet metal by a friction wheel 4 outside the cylinder, ^s / a "s * which is secured within the interrupted cylinder in the radial direction inwardly against a support wheel 5, a pressure is abated. An additional excitation can be given that one of these wheels is an electrode of an electrical HF generator 6, while the other wheel is grounded.

The use of additional excitation devices in these facilities either enables materials to be joined, in which a certain reaming tool cannot generate enough energy, or the tool is allowed to can be operated with lower energy consumption (possibly more economical overall), or that better Ir results can be achieved as if an additional stimulus were not provided. Nevertheless, the use of a useful

after borrowed excitation device for the device / the invention not mandatory.

The support wheel or the support roller 2 or 5 can by a other carrier component to be replaced, for example a static one Track or a stick or a wandering band.

In Fig. 8 is another embodiment of one according to the invention Facility shown. A device consists of a sleeve 6 provided with a gap, the gap being an axial slot 7 is. In this slot, a web 8 is inserted, which is bent with overlapping edges 9 around a two-part core 10 which is then done with the help of a double screw thread

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veaehenen screw spindle 12 is stretched so that the web is tight is held between the core and the sleeve with the overlapping edges 9 lying below the slot 7 · Sin

The hardened steel friction wheel 11 is placed in such a way that / enters the slot and, with some pressure on the edges 9, passes through the slot. A motor 13 rotates the wheel so that where it rests on the edges, its direction of movement is parallel and in the same direction as the movement of the assembly past the wheel. This movement is carried out in a carriage mounted on guide rails 14.

Figures 9a, 9b "and 9c show parts of cans for illustration some types of seams that can be made with the method of the invention. :. ·

9a shows the formation of a seam along line 15 between overlapped edges of hot plate 16; the tinplate is provided with a lacquer coating on the surface 17, which represents the inside of the can, with the exception the area. the seam, and is on the outer surface 18 of the Printed sleeve.

Fig. 9b shows a seam 19 * which is formed by the seam formation. overlapping seam edges as close as possible to the edge of the outer overlap so that a flush joint is formed is achieved with the bucket body.

Figure 9c shows an overlap joint using a plastic covering 20 between the metal edge parts 21, 22 is formed, wherein the Reibwerkzeufc acts on the surface of the edge 21 which is exposed to the outside of the sleeve.

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The reaming tool usually exerts its effect through the thickness at least one layer of material, i.e. it is applied to the surface of a web opposite that to be joined, upset. It can then by an intermediate covering made of a material that counteracts the adhesive or cohesive influence the rubbing treatment is resistant under the special conditions used. The intermediate layer does not adhere to the can to be manufactured and does not become part of this can. An intermediate layer is usually used only used in conjunction with thin or fragile materials, for example aluminum foil which is used as Can lock is used to protect it against abrasion by the reaming tool.

Specific embodiments according to the invention are set out below explained:

Example 1. Forming and manufacturing the side seam of a can from 230 to 240 micron thick tinplate with a :. Interior paint protection.

A tinplate blank is placed around the core of the device according to FIG Side edges overlap about 5 mm. The core is first inserted into the outer tubular sleeve and then expanded, wherein the overlapping edges of the sleeve are pressed into contact with one another.

The rotating wheel is placed on the exact point on the overlap, on which the seam is to be formed, brought up.

In the present example, the wheel diameter is 4.5 cm and its width is 2 mm. The wheel is made of treated and hardened Steel and has a very smooth surface with excellent wear properties. The engine is a 0.5 hp engine with

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600 W power and a voltage of 240 Vj the speed of the Rades is controlled by an adjustable transformer.

The wheel is set in motion before contact is made with the workpiece and the input voltage is set to 45 # set on the transformer; the speed of the tool is on the order of 10,000 to 15,000 rpm. The carriage on which the sleeve is attached is now set in motion and moves in contact with and past the friction wheel at a speed of 25 cm / sec. The pressure of the wheel in the connection or contact area is about 5 kg.

The strength of the joint achieved by this method is in excess of 100 kg / inch as measured with a shear tester. If necessary, either a wider or a narrower seam can be made, or one Double seam, one of which is made from the outside of the sleeve and the other from the inside of the sleeve. if the connection is made at the outer edge of the overlap area, it is possible to use the one that protrudes into the liner body To partially connect the edge so that an almost invisible seam is created.

Example 2. A side seam on the tin can using a solder is made.

The entire structure is similar to that of Example 1 (Fig. 8), but there is a very thin band of solvent between the tinplate surfaces are used in the area of the overlap connection. The applied voltage is reduced to 40 #, the Pressure of 3 kg at the contact point, the speed of movement of the attachment for the bushing past the friction wheel is increased JO cm / sec increased. The strength of the connection exceeds also here 100 kg / inch, and the connection is particularly strong.

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Example 3 Seaming a tinplate can with a 6.3 micron thick nylon film used as an adhesive in the seam area works. -

The construction is similar to Example 1, the only difference being that there is a strip of nylon film between the tinplate surfaces in the area of the overlap seam, and that a wider wheel (4 mm) made of identical material is used, with the energy supply from the regulating transformer forth 6o #. The pressure at the seam head on the workpiece is increased to 7 kg at the point of contact. The seam obtained is due to the adhesion of the nylon films to the upper and lower surfaces of the tinplate, and the connections that are achieved, have a strength of 40 kg for a two mm seam width.

Example 4. Seam formation of two aluminum plates, which are in the

Connection area are coated with each other with nylon 11.

Two aluminum panels decorated and provided with a protective coating 25/100 mm thick are wound onto a carrier surface made of hard rubber, with the edges overlapping in one area, in which one of the lanes has a coating strip "Nylon 11" has been added, the overlap having a width of 5 mm. To remove the coating by the friction wheel To prevent this, an intermediate layer of Teflon is placed over the overlap joint area. The arrangement (with a block of wood, which serves as a rigid support) is attached to a rail system in such a way that it is attached to the friction wheel can be moved past, which has a width of 4 mm and a diameter of 7 * 5 cm. The one applied to the engine The tension is 6o #, the pressure applied at the point of contact between the wheel and the work surface is 3 kg. The speed of movement of the arrangement relative to the reaming head is

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20 cm / sec. The resulting joint is very strong and a 2.5 cm strip will not tear when subjected to loads 100 kg. The area of application is preferably in the manufacture of cans and packaging.

Example 5. Bonding 18 micron thick aluminum foil to a round tinplate container for Ingestion of food with the aluminum foil acting as a cover.

A round tinplate container made of 1.5 mm thick tinplate is made filled with food and then covered with aluminum foil 20 microns thick around and under the rim of the container is folded. A stationary friction wheel made of polyimide resin (Vespel)

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filled with molybdenum disulfide / at a rate of 25,000 rotated up to 50,000 rpm (8θ # voltage), and the The edge of the container is brought into engagement with the wheel on the side that is covered with the aluminum foil. The container is slowly rotated until the aluminum foil is connected to this edge on the entire edge. The strength of the connection is higher than the strength of the film.

Example 6. Formation of side seams in a can made from sheet metal with a chromium-chromium oxide coating.

The Sinrichtung is substantially the same as that according to Example 1, the edges of the blank from 150 micron thick sheet '> chromium / Chromoxydüberzug mm are formed on a sleeve with an overlap of the second The friction wheel made of hardened steel, which is driven at a speed of 35,000 rpm, is pressed against the seam with a load of 4 kg, the passage speed of the liner below the reaming head is 12.5 cm / sec. The resulting connection is similar to that of Figures 1-3. If the chromium / chromium oxide coating is first removed and the surfaces cleaned, a steel-to-steel cohesive joint of the type shown in Figure 4 can be obtained.

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Claims (1)

October 19, 1971 W / He - <* 9fa- L / p 7219 Patent claims li metal vessel with a connection between the metal parts _t characterized in that the connection is a metallurgically homogeneous, continuous, dry connection. 2. Metal vessel according to claim 1, wherein the interconnected materials are tinplate, characterized in that the Connection from sheet to sheet takes place. 3. Metal vessel according to claim 1, wherein the interconnected Materials are tinplate with a chrome / chrome oxide coating, characterized in that the coating is removed prior to the formation of the connection, and in that the connection is made of sheet metal Sheet takes place. 4. Metal vessel according to one of claims 1 to 3, characterized in that that the metal parts show no sign of fusion in the area of the joint during the formation of the joint exhibit. 5. Metal vessel according to claim 1, characterized in that the interconnected materials are tinplate, characterized characterized in that the connection is made from tin to tin. 6. Metal vessel according to one of claims 1 to 4, characterized in that that the connected metals retain their original grain structure at the interconnected interfaces. 7. Metal vessel according to Claims 1 to 4, characterized in that that the metallurgical grain growth at the interfaces in the area of the connection with resulting recrystallization and forming an equiaxed grain structure in contrast to the flattened grain structure of the original metal has occurred in the surrounding surfaces, with no melting of the metal at the interfaces being visible. 209818/0739 10/19/1971 W / He - £ 0-- L / p 7219 8. Metal vessel according to claim 1, characterized in that the metal parts to be connected to one another are made of aluminum. 9 metal vessel with a connection, characterized that the compound shows a treatment with a rapidly rotating tool with a surface of the metal above the Connection comes into contact. 10. Metal vessel according to claim 1 or one of the preceding claims, characterized in that the connection is a Side seam of the vessel is. 11. A method for the production of metal vessels in which two metal parts are connected to one another, characterized in that that a surface of a metal part is arranged immediately next to a surface of the other metal part, that Pressure is exerted on them with the help of a tool, e.g. a wheel rotating at high speed, and that the pressure and the effect of the rotating tool can be maintained while the two metal parts are in intimate contact with one another stand so that they form a connection for the vessel. 12. The method according to claim 11, characterized in that the tool with an outer surface of one of the to each other connecting metal parts is brought into contact. 13. The method according to claim 11 or 12, characterized in that the connection is designed as a side seam, and that the rotating tool is designed as a wheel whose axis of rotation is perpendicular to the connecting line and whose circumference is in contact with the connecting surface and along the Seam line runs. 209818/0739 1-9.10.1971 W / He - «β" - L / p 7219 «9 l4. Method according to one of Claims II-l}, characterized in that that the surfaces to be connected to one another are pressed against one another by a pressure exerted by a device that is not the rotating tool or wheel. 15. Process according to claims 11-14, characterized in that that the pressure applied by the wheel is of the order of 1 to 4.5 kg. 16. Process for the production of metal vessels, whereby on the vessel a connecting seam is produced, characterized in that the connecting seam is formed in that the metal surface is influenced by a rubbing treatment. 17. Method according to claim 16, characterized in that two surfaces which are in contact with one another, e.g. both of Sheet metal or one made of sheet metal and the other made of a material provided between surfaces of a sheet of metal is to be connected to each other in such a way that a rubbing treatment is immediately carried out on the sheet metal on one surface it is output through one of the two surfaces so that the two surfaces connect. 18. The method according to claim 17 *, characterized in that the material sandwiched between the surfaces of the sheet is a solder or a thermoplastic such as a polyamide is. 19 · Process according to claims l6-l8, characterized in that that the rubbing treatment is carried out in such a way that a thermal energy pulse is generated which moves along the joint, wherein the metal at the interface of the joined surfaces is exposed to local thermal energy of short duration which does not cause melting of the metal in the vicinity of the interface. 209818/0739 19-10.1971 W / He - * £ - L / p 7219 S3 20. The method according to claims I6-19, characterized in that that an additional stimulation of the surface treated by rubbing action is given up before, during or after the rubbing treatment will. 21. Device for establishing a connection in production of vessels, in particular cans, characterized by a device (6, 10, 12) which connects the two to one another Bringing parts into close proximity to one another, "a hard, smooth reaming tool, e.g. a wheel (11), a device (1?), which rotates the tool at high speed and a device (14) which connects them together Parts and the rotating wheel moves relatively while the wheel exerts pressure on the parts. 22. Device according to claim 21, characterized in that a device (2; 6) an additional excitation to the parts to be connected before, during or after Period in which the tool (1; 5) applies pressure to the parts. 23. Device according to claim 21 or 22, characterized in that that a device (6, 10, 12) is provided which presses the parts to be connected together while the tool (11) put pressure on them. 24. Device for making a seam during production; of vessels, in particular cans, characterized in that a device (6, 10, 12) is provided which overlaps the metal edge parts to be connected with a seam, in immediate Proximity to each other brings that a hard, smooth reaming head (11) is provided that a device (13) the head with high Speed, and that a device puts the rotating head in contact with an external surface one of the metal edge parts brings. 209818/0739