CN216680810U

CN216680810U - High-temperature-resistant lead-free soldering tin bar

Info

Publication number: CN216680810U
Application number: CN202122951251.6U
Authority: CN
Inventors: 王鑫; 王国贤
Original assignee: Changzhou Dingqiang Solder Co ltd
Current assignee: Changzhou Dingqiang Solder Co ltd
Priority date: 2021-11-29
Filing date: 2021-11-29
Publication date: 2022-06-07
Anticipated expiration: 2031-11-29

Abstract

The utility model relates to the technical field of welding, in particular to a high-temperature-resistant lead-free soldering tin bar which comprises a tin bar body, a first connecting embedded block and a second connecting embedded block, wherein a welding core, a welding assisting layer, a heat-resistant layer and an epoxy wear-resistant layer are arranged in the tin bar body from inside to outside, the first connecting embedded block is arranged at one end of the tin bar body and is L-shaped, a first fixing safety insertion hole is formed in the wall surface of a recess in the first connecting embedded block, the second connecting embedded block is arranged at one end, far away from the first connecting embedded block, of the tin bar body, the second connecting embedded block is L-shaped and is matched with the first connecting embedded block, a second fixing safety insertion hole is formed in the protruding part of the second connecting embedded block, the first fixing safety insertion hole is matched with the second fixing safety insertion hole, and the first fixing safety insertion hole and the second fixing safety insertion hole are threaded holes. The tin bar body can be conveniently spliced as required, time and labor are saved, and the versatility of the tin bar body is enhanced.

Description

High-temperature-resistant lead-free soldering tin bar

Technical Field

The utility model relates to the technical field of welding, in particular to a high-temperature-resistant lead-free soldering tin bar.

Background

Soldering is a welding method in which a low-melting-point metal solder is melted by heating and then penetrates into and fills a gap at a joint of metal parts. The solder is named because the solder is usually tin-based alloy. A soldering iron is commonly used as the heating means. Is widely used in the electronic industry. As one of the operation techniques, manual soldering can be grasped mainly by actual training, but the operation techniques can be grasped with half the effort by learning accumulated experiences of a predecessor and applying an accurate method in accordance with the basic principle. The following points are essential to learning the welding technique. Not all materials can be connected by soldering, and only a part of metals have good weldability (strictly speaking, the property of being solderable) and can be connected by soldering. Copper and its alloy, gold, silver, zinc, nickel, etc. have good weldability, while aluminum, stainless steel, cast iron, etc. have poor weldability, and can be soldered by special soldering flux and method. Different welding fluxes are used for welding different materials, even the same material is adopted, different welding fluxes are often used when the welding process is different, such as manual iron welding and dip welding, and different welding fluxes are needed for cleaning after welding and not for cleaning. For manual tin soldering, the rosin and the activated rosin can meet the assembly requirements of most electronic products. It is also noted that the amount of flux is also of concern, and too much or too little is not conducive to soldering. The quality of the soldering tin can be influenced by the lead-tin solder with out-of-specification components or excessive impurities, particularly the content of certain impurities such as zinc, aluminum, cadmium and the like, even the content of 0.001 percent can obviously influence the wettability and the fluidity of the soldering tin, and the soldering quality is reduced. The reason that the chef in the religious market can not process delicious dishes by using inferior raw materials is obvious. The reasonable geometric shape of the welding spot is crucial to guarantee the soldering quality, the enough strength of the welding spot is difficult to guarantee due to the limited strength of the lead and tin solder of the contact, and the influence on the welding quality caused by the fact that the sizes of a lead and a hole of a through hole installation element on a printed board are different is avoided.

The soldering bar is an electrode for soldering. Soldering can be used for hermetic metal welding without requiring high temperatures and pressures. The high-temperature soldering tin bar is formed by adding silver, antimony or lead with high proportion into soldering tin alloy, and is mainly used for assembling components which do not change when a mainboard is assembled. However, the existing soldering tin bar cannot ensure high temperature resistance when being used for welding, so that the soldering tin bar has poor service performance, has more scum when being melted, and is easy to oxidize.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art and provides a high-temperature-resistant lead-free solder bar.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a high temperature resistant unleaded soldering tin strip, includes tin bar body, first connection abaculus and second connection abaculus, by interior and outer core wire, the layer of helping welding, heat-resistant layer and the epoxy layer of nai rubbing of being equipped with in the tin bar body, first connection abaculus sets up the one end at the tin bar body, and just first connection abaculus is the L type, first fixed ann jack has been seted up on lieing in the sunken wall in the first connection abaculus, the one end of first connection abaculus is kept away from to the setting of second connection abaculus on the tin bar body, and the second connection abaculus is the L type and with first connection abaculus phase-match, be equipped with the fixed ann jack of second in the protruding position on the second connection abaculus.

Preferably, the first fixing insertion hole is matched with the second fixing insertion hole.

Preferably, the first fixing insertion hole and the second fixing insertion hole are threaded holes.

Preferably, the top of the tin bar body is provided with a top groove.

Preferably, the bottom of the top groove is provided with a plurality of positioning grooves.

Preferably, the weld-assist layer is made of a resin material.

Preferably, the heat-resistant layer is made of a flexible graphene material.

Preferably, the epoxy abrasion resistant layer is made of aluminum tin oxide.

Compared with the prior art, the utility model has the beneficial effects that:

1. the tin bar body can be conveniently spliced as required, time and labor are saved, and the versatility of the tin bar body is enhanced.

2. The tin bar body has good oxidation resistance, high fluidity and strong weldability, little scum is generated during melting, and little oxidation is generated during immersion and wave soldering.

Drawings

Fig. 1 is a schematic view of a front view cross-sectional structure of a high-temperature-resistant lead-free solder bar according to the present invention;

fig. 2 is an enlarged schematic structural view of a position a of a high-temperature resistant lead-free solder bar according to the present invention;

fig. 3 is a schematic cross-sectional structure view of a high-temperature-resistant lead-free solder bar according to the present invention.

In the figure: the solder strip comprises a tin bar body 1, a first connecting embedded block 2, a first fixed safety jack 21, a second connecting embedded block 3, a second fixed safety jack 31, a top groove 4, a positioning groove 5, a welding core 6, a welding-assisting layer 7, a heat-resistant layer 8 and an epoxy wear-resistant layer 9.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-3, a high temperature resistant lead-free solder strip, including tin bar body 1, first connection abaculus 2 and second connection abaculus 3, by interior to be equipped with the core wire 6 outward in the tin bar body 1, help the welding layer 7, heat-resistant layer 8 and epoxy antifriction layer 9, first connection abaculus 2 sets up the one end at tin bar body 1, and first connection abaculus 2 is the L type, first fixed ann's jack 21 has been seted up on the wall that lies in the sunken among the first connection abaculus 2, second connection abaculus 3 sets up the one end of keeping away from first connection abaculus 2 on tin bar body 1, and second connection abaculus 3 is the L type and matches with first connection abaculus 2, be equipped with second fixed ann jack 31 in the position of protruding on second connection abaculus 3. When two tin bar bodies 1 need to be connected, the first connecting embedded block 2 of one end of one of the tin bar bodies 1 and the second connecting embedded block 3 of the other tin bar body 1 are mutually inserted and embedded, and the fixing screw is screwed into the first fixing inserting hole 21 and the second fixing inserting hole 31, so that the tin bar bodies 1 can be conveniently spliced according to needs, time and labor are saved, and the versatility is enhanced.

Wherein, the first fixed ann's jack 21 matches with the fixed ann's jack 31 of second, and first fixed ann's jack 21 is the screw hole with the fixed ann's jack 31 of second, and the top of tin bar body 1 is equipped with top groove 4, and the bottom in top groove 4 is equipped with a plurality of constant head tanks 5.

The welding-assistant layer 7 is made of resin materials, the heat-resistant layer 8 is made of flexible graphene materials, and the epoxy wear-resistant layer 9 is made of aluminum tin oxide. Therefore, the tin bar body 1 has good oxidation resistance, high fluidity, strong weldability, little floating slag during melting and little oxidation during immersion and wave soldering

The embodiment is as follows: when two tin bar bodies 1 need to be connected, the first connecting embedded block 2 of one end of one of the tin bar bodies 1 and the second connecting embedded block 3 of the other tin bar body 1 are mutually inserted and embedded, and the fixing screw is screwed into the first fixing inserting hole 21 and the second fixing inserting hole 31, so that the tin bar bodies 1 can be conveniently spliced according to needs, time and labor are saved, and the versatility is enhanced. The tin bar body 1 has good oxidation resistance, high fluidity, strong weldability, little scum in melting and little oxidation in immersion and wave soldering

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Claims

1. A high temperature resistant lead-free solder bar, comprising:

the tin bar comprises a tin bar body (1), wherein a welding core (6), a welding assisting layer (7), a heat-resistant layer (8) and an epoxy wear-resistant layer (9) are arranged in the tin bar body (1) from inside to outside;

the tin bar connecting structure comprises a first connecting embedded block (2), wherein the first connecting embedded block (2) is arranged at one end of a tin bar body (1), the first connecting embedded block (2) is L-shaped, and a first fixing inserting hole (21) is formed in the wall surface of a recess in the first connecting embedded block (2); and

the abaculus (3) is connected to the second, the one end of first connection abaculus (2) is kept away from in the setting of second connection abaculus (3) on tin bar body (1), and second connection abaculus (3) be the L type and with first connection abaculus (2) phase-match, be equipped with the fixed ann jack of second (31) in the protruding position on the second connection abaculus (3).

2. High temperature resistant lead-free solder bar as claimed in claim 1, characterized in that the first fixing and seating hole (21) is matched with the second fixing and seating hole (31).

3. The high temperature resistant lead-free solder bar as recited in claim 2, wherein the first and second fixing mounting holes (21, 31) are threaded holes.

4. High temperature resistant lead-free solder bar as claimed in claim 1, characterized in that the top of the solder bar body (1) is provided with a top groove (4).

5. The high temperature resistant lead-free solder bar as claimed in claim 4, characterized in that the bottom of the top groove (4) is provided with a plurality of positioning grooves (5).

6. The high temperature resistant lead-free solder bar as claimed in claim 1, wherein the soldering assistant layer (7) is made of a resin material.

7. High temperature resistant lead-free solder bar as claimed in claim 1, characterized in that the heat resistant layer (8) is made of a flexible graphene material.

8. High temperature resistant lead-free solder bar as claimed in claim 1, characterized in that the epoxy wear layer (9) is made of aluminium tin oxide.