阅读说明：本技术 导热式焊接片 (Heat conduction type welding sheet ) 是由 刘兴丹 于 2021-09-17 设计创作，主要内容包括：本发明公开了导热式焊接片,包括：焊接片(1)由焊料层(11)和导热片(12)组成,所述导热片(12)一端为加热端(121),另一端为导热端(122),在所述导热片(12)的所述导热端(122)至少一个表面复合连接、包裹、重叠连接有至少一层所述焊料层(11)；其为螺栓的防松连接及待焊接物体的焊接提供了一种新的方式。(The invention discloses a heat conduction type welding sheet, comprising: the welding sheet (1) consists of a welding material layer (11) and a heat conducting sheet (12), one end of the heat conducting sheet (12) is a heating end (121), the other end of the heat conducting sheet is a heat conducting end (122), and at least one layer of the welding material layer (11) is compositely connected, wrapped and overlapped on at least one surface of the heat conducting end (122) of the heat conducting sheet (12); the novel method is provided for the anti-loose connection of the bolt and the welding of the object to be welded.)

1. Heat conduction formula welding piece, characterized by includes: the welding sheet (1) consists of a welding material layer (11) and a heat conducting sheet (12), one end of the heat conducting sheet (12) is a heating end (121), the other end of the heat conducting sheet is a heat conducting end (122), and at least one layer of the welding material layer (11) is compositely connected, wrapped and overlapped on at least one surface of the heat conducting end (122) of the heat conducting sheet (12);

the welding sheet (1) is clamped between two welded objects, the heating end (121) of the heat conducting sheet (12) is heated, heat is transferred to the heat conducting end (122), the heat conducting end (122) heats and melts the solder in the solder layer (11) on the surface, and the welded objects are welded into a whole; after welding, the heating end (121) of the heat conducting sheet (12) is heated again to melt the solder, so that the welded objects are separated; wherein the melting point of the material of the heat conducting sheet (12) is larger than the melting point of the solder in the solder layer (11); generally, an electromagnetic induction device is selected as the heating device (2);

when welding piece (1) is used for bolt (3), nut (4) locking connection:

the heating end (121) of the heat conducting strip (12) is a bendable strip structure or a column, the heat conducting end (122) is a ring-shaped structure with a through hole, and at least one surface of the heat conducting end (122) is in composite connection with a welding layer;

or the heat conducting sheet (12) in the welding sheet (1) is of a ring-shaped structure with a through hole, the heat conducting end (122) is arranged on one side of the through hole, and the surface of the heat conducting end (122) is in composite connection with a welding layer;

or the welding material layer (11) is connected to the outer thread surface of the screw of the bolt (3) in a compounding way; the solder layer (11) is connected to the inner thread surface of the nut (4) in a compounding manner; the welding flux layer (11) between the bolt (3) and the nut (4) is heated, fused and connected in a hot melting mode and solidified.

2. A thermally conductive solder sheet as claimed in claim 1 comprising: and heating the heating end (121) of the heat conducting sheet (12), transferring heat to the heat conducting end (122), heating the solder with the surface covered and connected by the heat conducting end (122), and welding after the solder is melted.

3. A thermally conductive solder sheet as claimed in claim 1 comprising: the heat conducting sheet (12) in the welding sheet (1) is made of metal or alloy material, and the welding material in the welding material layer (11) is made of single welding material or alloy welding material.

4. A thermally conductive solder sheet as claimed in claim 1 comprising: the heating end (121) of the heat conducting sheet (12) is bent, so that the heating end (121) can be heated from various angles.

5. A thermally conductive solder sheet as claimed in claim 1 comprising: the shape of the heat conducting sheet (12) also comprises welded bodies of various shapes of lines, panels, strip sheets, strip plates, grid panels and columns.

6. A thermally conductive solder sheet as claimed in claim 1 comprising: the component can be used as a special pattern of the heat conducting sheet (12), wherein the surface of the connecting surface of the component is provided with the solder layer (11).

7. A thermally conductive solder sheet as claimed in claim 1 comprising: heating the heating end (121) of the thermally conductive sheet (12), comprising: electromagnetic induction heating, heating wire heating, combustion heating.

Technical Field

The invention relates to welding, in particular to a composite welding sheet with a surface containing welding flux, which is used for anti-loose connection.

Background

In the conventional welding, two connected objects are welded by combining a welding flux and a welding gun so as to be connected into a whole. The welding method and the welding process are various, the welding materials are also various, and the requirements and firmness during welding are met to the greatest extent. However, welding requires a professional to perform the operation, and the two welded objects are difficult to separate, which is not suitable for the equipment requiring disassembly and maintenance.

Disclosure of Invention

The welding layer made of a layer of welding flux is connected to the partial surface of the heat conducting fin in a compounding mode, the heat conducting fin is heated, and the welding layer is subjected to hot melting fusion welding after heat conduction.

To achieve the above object, the present invention provides a heat conductive welding sheet, comprising: the welding sheet (1) consists of a welding material layer (11) and a heat conducting sheet (12), one end of the heat conducting sheet (12) is a heating end (121), the other end of the heat conducting sheet is a heat conducting end (122), and at least one layer of the welding material layer (11) is compositely connected, wrapped and overlapped on at least one surface of the heat conducting end (122) of the heat conducting sheet (12);

the welding sheet (1) is clamped between two welded objects, the heating end (121) of the heat conducting sheet (12) is heated, heat is transferred to the heat conducting end (122), the heat conducting end (122) heats and melts the solder in the solder layer (11) on the surface, and the welded objects are welded into a whole; after welding, the heating end (121) of the heat conducting sheet (12) is heated again to melt the solder, so that the welded objects are separated; wherein the melting point of the material of the heat conducting sheet (12) is larger than the melting point of the solder in the solder layer (11); generally, an electromagnetic induction device is selected as the heating device (2);

when welding piece (1) is used for bolt (3), nut (4) locking connection:

the heating end (121) of the heat conducting strip (12) is a bendable strip structure or a column, the heat conducting end (122) is a ring-shaped structure with a through hole, and at least one surface of the heat conducting end (122) is in composite connection with a welding layer;

or the heat conducting sheet (12) in the welding sheet (1) is of a ring-shaped structure with a through hole, the heat conducting end (122) is arranged on one side of the through hole, and the surface of the heat conducting end (122) is in composite connection with a welding layer;

or the welding material layer (11) is connected to the outer thread surface of the screw of the bolt (3) in a compounding way; the solder layer (11) is connected to the inner thread surface of the nut (4) in a compounding manner; the welding flux layer (11) between the bolt (3) and the nut (4) is heated, fused and connected in a hot melting mode and solidified.

Further, the heating end (121) of the heat conducting sheet (12) is heated, heat is transferred to the heat conducting end (122), the heat conducting end (122) heats the solder with the surface covered and connected, and the solder is welded after being melted.

Further, the heat conducting sheet (12) in the welding sheet (1) is made of metal or alloy material, and the solder in the solder layer (11) is made of single welding material or alloy welding material.

Furthermore, the heating end (121) of the heat conducting sheet (12) is bent, so that the heating end (121) can be heated from various angles.

Further, the shapes of the heat conducting sheets (12) also comprise welded bodies of various shapes of lines, panels, strips, laths, grid panels and columns.

Further, the component can be used as a special pattern of the heat conducting sheet (12), wherein the surface of the connecting surface of the component is provided with the solder layer (11).

Further, the heating of the heating end (121) of the heat conductive sheet (12) includes: electromagnetic induction heating, heating wire heating, combustion heating.

In the embodiment of the invention: the welding layer made of solder is connected to part of the surface of the heat conducting sheet in a compounding manner, and the welding layer and two connected objects are in overlapped clamping connection. Then, the thermally conductive sheet exposed from the edges of the two objects to be connected is heated. The heat is conducted to the solder layer, and the solder in the solder layer is heated and melted. After the solder is cooled, the two objects to be connected are welded into a whole. The solidified welding flux can be melted again by heating the heat conducting sheet, so that the two connected objects are separated. The welding is made simpler by the method of clamping the welding tab in advance. And, can also easily realize the heating separation of welding. The novel method is provided for the anti-loose connection of the bolt and the welding of the object to be welded.

Drawings

FIG. 1 is a schematic perspective view of a heat conducting strip of a heat conducting welding strip of the present invention, wherein the heat conducting strip is a hollow ring combined with a strip structure.

FIG. 2 is a schematic side view of a heat conducting strip of the heat conducting welding strip of the present invention, wherein the heat conducting strip is a hollow ring combined with a strip structure.

Fig. 3 is a schematic perspective view of a bent heat conducting sheet in a welded sheet of the heat conducting welded sheet according to the present invention.

Fig. 4 is a schematic side view of a bent heat conducting sheet in a welded sheet of the heat conducting welded sheet according to the present invention.

FIG. 5 is a schematic perspective view of a heat-conductive welding sheet according to the present invention, wherein the welding sheet has a hollow ring structure.

FIG. 6 is a schematic perspective view of a heat conductive welding sheet according to the present invention, in which the welding sheet has a hollow ring structure and the entire surface of the welding layer covers the heat conductive welding sheet.

FIG. 7 is a schematic side view of a heat conductive welding sheet according to the present invention, wherein the welding sheet has a hollow ring structure.

FIG. 8 is a schematic top view of a heat conductive welding sheet according to the present invention, wherein the welding sheet has a hollow ring structure.

FIG. 9 is a schematic perspective exploded view of a heat conductive bonding sheet according to the present invention, in which a hollow ring of solder is overlapped with a heat conductive sheet of the hollow ring.

Fig. 10 is a schematic perspective exploded view showing a structure of a heat conductive soldering sheet according to the present invention, in which two objects to be connected are connected to each other while being overlapped with each other when the solder is a panel.

FIG. 11 is a schematic side view of a heat conductive welding sheet of the present invention, in which a hollow ring made of solder is overlapped with a heat conductive sheet of the hollow ring and is fitted over a bolt and a screw.

Fig. 12 is a schematic side view showing a structure of a heat conductive soldering sheet according to the present invention, in which two objects to be connected are overlapped and connected when solder is a panel.

Fig. 13 is a schematic perspective view of a heat conductive welding sheet according to the present invention, in which the welding sheet has a Y-shaped structure.

Fig. 14 is a schematic perspective view of the heat-conducting welding sheet of the present invention, wherein the welding sheet is a combination of two spoons.

FIG. 15 is a schematic side view of a heat conductive welding strip of the present invention, which is a hollow ring fitted over a nut after the bolt is fastened to the nut knob and heated to weld.

Fig. 16 is a schematic perspective exploded view of the heat conductive welding sheet of the present invention, in which the bolt and the nut are respectively engaged with the welding sheet.

Fig. 17 is a schematic perspective view of a heat conductive welding sheet according to the present invention, in which a solder layer is compositely attached to a surface of a bolt.

Fig. 18 is a schematic side view of a heat conductive solder sheet according to the present invention, in which a solder layer is compositely attached to a surface of a bolt.

FIG. 19 is a schematic side sectional view of a thermally conductive solder sheet according to the present invention, in which a solder layer is compositely attached to the outer thread surface of the bolt and the screw.

FIG. 20 is a schematic side sectional view of a heat conductive solder sheet according to the present invention, in which a solder layer is compositely attached to the surface of the nut internal thread.

Fig. 21 is a schematic perspective view of a solder layer compositely attached to a surface of a heat conductive sheet panel in a solder sheet of a heat conductive solder sheet according to the present invention.

Fig. 22 is a schematic perspective view of a solder layer compositely attached to the surface of a cylindrical heat-conducting sheet in a heat-conducting soldering sheet according to the present invention.

Fig. 23 is a schematic plan view showing a structure in which heat conductive sheets are arranged in parallel in a solder sheet of a heat conductive solder sheet according to the present invention.

Fig. 24 is a schematic perspective view of a nut surface of a thermally conductive solder sheet according to the present invention, to which a solder layer is compositely attached.

Fig. 25 is a schematic side view of a nut surface with a solder layer bonded thereto according to the thermally conductive solder sheet of the present invention.

Fig. 26 is a schematic top view of a heat conductive solder sheet according to the present invention, in which a solder layer is bonded to a surface of a nut.

Fig. 27 is a schematic perspective view of a heat conductive bonding sheet of the present invention in a tilted state with a barrel-shaped through-hole structure.

Fig. 28 is a perspective view of the front surface of the heat conductive bonding pad of the present invention having a barrel-shaped through-hole structure.

Fig. 29 is a schematic side view of a hand-held electromagnetic induction heating apparatus of the heat conductive welding sheet of the present invention.

In the figures, the reference numerals are explained as follows:

1, welding a sheet; 11 a solder layer; 12 heat-conducting fins; 121 heating end; 122 a heat conducting end; 2 heating the equipment; 3, bolts; 4, nuts.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1-29, a thermally conductive solder sheet includes: the welding sheet 1 consists of a welding material layer 11 and a heat conducting sheet 12, one end of the heat conducting sheet 12 is a heating end 121, the other end of the heat conducting sheet is a heat conducting end 122, and at least one welding material layer 11 is compositely connected, wrapped and overlapped on at least one surface of the heat conducting end 122 of the heat conducting sheet 12;

the welding sheet 1 is clamped between two welded objects, the heating end 121 of the heat conducting sheet 12 is heated, heat is transferred to the heat conducting end 122, the heat conducting end 122 heats, melts and welds the solder in the solder layer 11 on the surface, and the welded objects are welded into a whole; after welding, the heating end 121 of the heat conducting sheet 12 is heated again to melt the solder, so that the welded objects are separated; wherein, the melting point of the material of the heat conducting sheet 12 is greater than the melting point of the solder in the solder layer 11; generally, an electromagnetic induction device is selected as the heating device 2;

when the welding sheet 1 is used for the anti-loose connection of the bolt 3 and the nut 4:

the heating end 121 of the heat conducting strip 12 is a bendable strip structure or a column, the heat conducting end 122 is a ring-shaped structure with a through hole, and at least one surface of the heat conducting end 122 is compositely connected with a welding layer;

or, the heat conducting sheet 12 in the welding sheet 1 is a ring-shaped structure with a through hole, one side of the through hole is a heat conducting end 122, and the surface of the heat conducting end 122 is compositely connected with a welding layer;

or, the external thread surface of the screw of the bolt 3 is connected with a solder layer 11 in a compounding way; the surface of the internal thread of the nut 4 is compositely connected with a solder layer 11; the solder layer 11 between the bolt 3 and the nut 4 is heated, fused and connected by hot melting and solidification.

Specifically, the solder sheet 1 is made of a heat conductive sheet 12 having a solder layer 11 attached to a partial surface thereof. In the soldering lug 1, the solder layer 11 is compositely attached to a partial surface of the heat-conducting lug 12, and the solder layer 11 is distributed on one end or inside or outside of the heat-conducting lug 12. One end of the heat conducting sheet 12 is a heat conducting end 122, and the other end is a heating end 121. The solder is covered or compositely connected to at least one surface or two surfaces of the heat conducting end 122 of the heat conducting sheet 12 in a hot-dip composite connection mode, a coating mode, an adhesive bonding mode, a hot-melt fusion mode, a wrapping mode, a winding mode and a superposition mode.

The heating end 121 and the heat conducting end 122 of the heat conducting sheet 12 are integrally formed metal sheets. Since the melting point of the material of the heat conducting sheet 12 is higher than that of the solder in the solder layer 11, when the heat conducting sheet 12 is heated, the solder is heated and melted, and the heat conducting sheet 12 is not melted. The welding sheet 1 is suitable for intermetallic welding and connection.

When the welding piece 1 is used, the welding piece 1 and an object to be welded are clamped and fixed, and the welding piece 1 is clamped between the two objects to be connected. The solder layer 11 covering the surface of the heat conducting end 122 of the heat conducting sheet 12 is integrally bonded to the surface of the object to be connected. The heating end 121 of the heat-conducting sheet 12 is located outside the two connected objects, so that the heating device 2 can heat the heating end 121 conveniently. When the heating end 121, which is not compositely connected with the solder layer 11, of the heat conducting sheet 12 is heated, heat is transferred to the heat conducting end 122 at the other end of the heat conducting sheet 12, the heat conducting end 122 of the heat conducting sheet 12 transfers heat to the solder layer 11 on the surface, and the solder in the solder layer 11 is wholly heated and melted. At this time, the heating is stopped, the solder is gradually cooled and solidified, and the solder connects the two connected objects and the thermally conductive sheet 12 by solidification, and at this time, the soldering process is completed.

When two welded objects need to be separated, the heating end 121 of the heat conducting sheet 12 is heated again, the heat is transferred to the heat conducting end 122 at the other end of the heat conducting sheet 12, and the heat conducting end 122 of the heat conducting sheet 12 transfers the heat to the solder layer 11 on the surface. The solder in the solder layer 11 is entirely melted by heat. At this time, the two ligates are separated.

Specifically, when the welding piece 1 is used by welding with the bolt 3 and the nut 4, when the bolt 3 and the nut 4 are the common hexagon flange bolt 3 and the nut 4, the welding piece 1 is connected between the head of the bolt 3 and the surface of one side of the screw and the surface of the object to be connected. And a welding piece 1 is connected between the nut 4 and the object to be connected. When the surface of the connecting side of the head of the bolt 3 and the screw is provided with a circle of right-angled triangular saw teeth, or when only the bolt 3 or the nut 4 is used for connecting with the connected object, only the welding sheet 1 needs to be placed between the bolt 3 or the nut 4 and the connected object.

After the bolt 3 and the nut 4 are screwed and locked, the heating end 121 of the heat conducting sheet 12 is heated through the heating device 2, the heat is transferred to the heating end 121 of the heat conducting sheet 12, the heating end 121 transfers the heat to the solder in the solder layer 11 with the surface covered and connected, the solder is heated and melted, the heating is stopped after the solder is filled in the surfaces and gaps of the bolt 3, the nut 4 and the connected object, and the solder is cooled and solidified to complete the welding. The bolt 3 and the nut 4 are connected in a locking manner by welding.

When the welded bolt 3 and the nut 4 need to be detached and separated, the heating end 121 of the heat conducting strip 12 needs to be heated, heat is transferred to the heat conducting end 122 at the other end of the heat conducting strip 12, and the heat conducting end 122 of the heat conducting strip 12 transfers heat to the solder layer 11 on the surface. The solder in the solder layer 11 is entirely melted by heat. At this time, the nut 4 is rotated counterclockwise and removed from the shank of the bolt 3, and the bolt 3 and the nut 4 are separated and loosened.

Specifically, in order to visually see the melting of the solder in the solder layer 11 after heating, the following several ways can be implemented. 1. The width of the solder layer 11 is increased, and the edge of the connected object is partially exposed out of the solder layer 11, so that a user can visually see the melting condition of the heated solder. The solder in the solder layer 11 can be a single layer or a composite stack of multiple layers. 2. The heating device 2 has a timing heating function, the heating device 2 is started, and after the heating device runs for a specified time, the heating welding is automatically stopped. And a sound prompt or a light prompt is set. The heating device 2 is started, the heating time is preset, and the solder can be completely melted. 3. Different welding powers are set according to the positions of different connected objects and the types of the welding sheets 1. And the position of the heating body and the heating time are set, so that the connected object and the welding sheet 1 are heated and efficiently welded in a more targeted manner.

The heating device 2 is an electromagnetic induction heating device 2, a heating pipe in the electromagnetic induction heating device 2 is connected with one end of a handle, the other end of the handle is connected with an electric wire, and the other end of the electric wire is connected with a host of the heating device 2. The heating pipe of the heating device 2 directly heats and welds the welding sheet 1 in a handheld mode. Still include, electric heating equipment 2 is by heating pipe connection handle, and the power cord is connected to the handle. The structure is similar to that of iron, and the heat conducting fins 12 in the welding fins 1 are heated by heating pipes.

Scheme one

In a first mode

As shown in fig. 1 to 4, when the welding piece 1 is used for the anti-loose connection of the bolt 3, the heating end 121 of the heat conducting strip 12 is a strip-shaped metal sheet or cylinder, and the metal sheet or cylinder can be bent to any angle and then heated. The heat conducting end 122 of the heat conducting plate 12 is a hollow ring structure with a through hole. Further, a solder layer 11 is compositely connected to at least one surface or both surfaces of the heat conductive end 122 of the heat conductive sheet 12. The thickness of the solder layer 11, the selected solder material and the strength after connection are determined according to the actual use requirements and the strength of the connected bolt 3 and the nut 4 and the connected object. The hollow ring structure can be used as a gasket besides the heating function, and is used for anti-loosening and anti-theft connection of the bolt 3 and the nut 4.

Mode two

As shown in fig. 5 to 8, when the welding lug 1 is used in the bolt 3, the welding lug 1 has a ring structure with a through hole provided in the middle, and the structure thereof is similar to a flat washer. Around the through hole at the inner side of the soldering terminal 1, a layer of solder layer 11 is compositely connected on the upper surface, the lower surface and the side of the through hole. The heat conducting sheet 12 in the area covered by the solder layer 11 is the heat conducting end 122, and the area without the solder layer 11 covering outside the heat conducting sheet 12 in the soldering sheet 1 is the heating end 121. The heating end 121 without the solder layer 11 covering the outside of the heat conductive sheet 12 is heated by the electromagnetic induction heating device 2. Wherein, the solder layer 11 in the heating end 121 is allowed to be locally positioned outside the attaching area of the two connected objects, which is beneficial to visually seeing the melting condition of the solder in the solder layer when heating. And the purpose of increasing the quantity of the solder is realized, and the purpose of increasing the welding strength is achieved. During the heating of the welding tab 1, the heating device 2 is heated simultaneously with the screw of the nut 4 and the bolt 3.

Mode III

As shown in fig. 9-12, the heat conducting sheet 12 in the soldering sheet 1 has a hollow ring structure with through holes, and the solder in the soldering layer forms a hollow ring with through holes. The welded hollow ring and the heat conducting fin 12 are overlapped up and down, sleeved into a cylinder or a screw of a connected object together, clamped with the surfaces of the two connected objects, and then the heat conducting fin 12 is subjected to hot melting fusion connection. Wherein, the diameter of the hollow ring made by the welding sheet 1 is larger than that of the hollow ring made by the welding flux, and the inner diameters of the through holes of the welding sheet and the hollow ring are consistent. Wherein, the width of the edge of the heat-conducting fin 12 is larger than the width of the surface of the connected object.

The heat conductive sheet 12 in the soldering sheet 1 is a panel, and the solder in the solder layer 11 is also made into a panel. The panel made of the solder in the solder layer 11 is vertically overlapped with the heat conducting sheet 12, and after the panel made of the solder is clamped by two connected objects, the heat conducting sheet 12 is heated, and the panel made of the solder is connected with the heat conducting sheet 12 and the surfaces of the connected objects in a hot melting and fusing manner. The panel made of solder is smaller than the panel made of the heat conductive sheet 12. Wherein, the width of the edge of the heat-conducting fin 12 is larger than the width of the surface of the connected object.

Mode IV

As shown in fig. 13-14, the heat conducting end 122 of the heat conducting strip 12 may also be a semi-arc ring, and the bottom of the ring is vertically connected with a strip-shaped metal sheet or cylinder to form a Y-shaped fork structure. And the heat conducting end 122 of the heat conducting strip 12 is a semicircular arc-shaped ring, the side edge of the heat conducting strip is connected with a long-strip-shaped metal sheet or a long-strip-shaped cylinder to form a small spoon, the two small spoons are folded to form the heat conducting end 122 in the shape of a hollow ring, and the welding piece 1 is taken down from the bolt 3 and the nut 4 after the two small spoons are conveniently heated.

Mode five

As shown in fig. 15, when the welding sheet 1 is used in the bolt 3, the heat conducting sheet 12 in the welding sheet 1 is a circular ring provided with a through hole and has a structure similar to a flat gasket. The outer part of the manufactured heat conducting sheet 12 is integrally wrapped and compositely connected with a welding layer, or the whole welding sheet 1 is made of welding flux.

After the bolt 3 is connected and fastened with the nut 4, the through hole in the welding sheet 1 penetrates through the screw rod of the bolt 3 and is sleeved above the nut 4. The heat conducting sheet 12 is heated by the heating device 2, and the welding layer on the surface of the heat conducting sheet 12 or the whole welding sheet 1 made of the welding material is heated and melted to be changed into the metal liquid. The metal liquid flows into a gap between the nut 4 and the screw thread to be cooled and solidified, so that the bolt 3 is connected with the nut 4 in a loose-proof manner. Because the solder flows into the gap between the bolt 3 and the nut 4 after melting, the solder is relatively difficult to remove after cooling and solidification, and the anti-loosening and anti-theft effects of the bolt 3 generated by the solder are better.

Scheme two

As shown in fig. 16-20, a solder layer 11 is partially or entirely compositely attached to the external thread surface of the screw of the bolt 3. And, a solder layer 11 is compositely connected to the surface of the female screw of the nut 4. Regarding the bolt 3 or the nut 4 compositely connected with the solder layer 11 as the soldering chip 1, regarding the bolt 3 or the nut 4 as the heat conducting chip 12, regarding the solder layer 11 covering area of the bolt 3 or the nut 4 as the heat conducting end 122, and regarding the area of the bolt 3 or the nut 4 without the composite solder layer 11 as the heating end 121. The bolt 3 or the nut 4 containing the solder layer 11 constitutes the solder sheet 1. The heat conducting sheet 12 in the welding sheet 1 may also be other metal parts in various patterns.

After the bolt 3 and the nut 4 are fastened by twisting, the region of the solder layer 11 where the bolt 3 and the nut 4 overlap each other is heated. Specifically, the entire nut 4 can be heated by the electromagnetic induction heating device 2. The heating end 121 of the heat conducting sheet 12 in the welding sheet 1 can also be heated by using a heating wire or an iron. After heating, the solder in the solder layer 11 on the threaded surface of the nut 4 and the solder in the solder layer 11 on the threaded surface of the screw are melt-bonded. After the heating is stopped, the solder is cooled and solidified, and the bolt 3 and the nut 4 are combined into a whole. The bolt 3 is connected with the internal thread of the nut 4 through the solder solidification of the solder layer 11, and the anti-loose connection between the bolt 3 and the nut 4 is realized. Because the melting point of the solder in the solder layer 11 is lower than the melting points of the bolt 3 and the nut 4, the bolt 3 and the nut 4 are not melted when being heated, but the solder is fused and connected by hot melting, and the bolt 3 and the nut 4 are solidified into a whole after being cooled.

If necessary, a solder layer 11 is compositely joined to the surface of the bolt 3 on the side where the screw is joined. At least one surface of the through hole side of the nut 4 is compositely connected with a solder layer 11. The solder in the solder layer 11 can be fused and cooled to solidify into a whole after being heated.

Scheme three

The shape of the heat conducting sheet 12 in the welding sheet 1 is various shapes such as lines, panels, cubes, barrel-shaped structures and the like, and can be a certain part or part.

In a first mode

As shown in fig. 21 to 23, when the heat conductive sheet 12 is a strip-like or sheet-like panel, the upper and lower surfaces are covered with the solder layer 11. Wherein, the solder layer 11 is not coated on the edge of the heat conducting sheet 12. After the part of the welding sheet 1 containing the solder layer 11 is clamped, connected and fixed with the connected object, the part of the welding sheet 1 which is not coated with the solder protrudes out of the edges of the two connected objects for heating by the heating device 2, so that the welding and bonding of the surfaces of the two objects are realized.

When the soldering terminal 1 is a filament or a column, a solder layer 11 is compositely attached to the surface of most of the filament or the column, and there is no solder layer 11 at one end of the filament or the column. The heating device 2 heats one end of the non-solder layer 11, and the solder in the solder layer 11 is melted by heat to be soldered. The welding and solidifying device is suitable for welding and solidifying a gap between two connected objects.

The heat conducting strip 12 is a panel, and the heat conducting end 122 of the heat conducting strip 12 in the welding strip 1 is a plurality of parallel thin strip-shaped structures, and the edges of the thin strips are connected by the heating end 121 of the heat conducting strip 12. And, the surface of the thin strip structure is compositely connected with a solder layer 11. The plurality of heat-conducting fins 12 heat-weld the surfaces of the objects to be joined at the same time.

Mode two

As shown in fig. 24-26, the adherend can also be a variety of types of parts including: bolt 3, nut 4. Specifically, a welding layer is compositely connected to the surface of the component or the part, and the whole component is heated, so that the welding layer 11 and the surface of another connected object are welded into a whole.

Mode III

As shown in fig. 27 to 28, when the heat conducting end 122 of the heat conducting sheet 12 of the soldering sheet 1 and the heating end 121 are arranged perpendicular to each other, the heating device 2 heats the heating end 121 from the side. Wherein, heating from the side still includes: the heating end 121 of the heat conducting strip 12 is a hexagonal hollow tube or a circular hollow tube. One end of the hexagonal hollow tube or the circular hollow tube is connected with the bottom surface of the heating end 121. Wherein, when needing to be sleeved into an object for welding, the surface of the panel in the heating end 121 is provided with a through hole.