CN219113216U

CN219113216U - Lead-free silver-containing soldering tin bar with strong conductivity and corrosion resistance

Info

Publication number: CN219113216U
Application number: CN202222580666.1U
Authority: CN
Inventors: 陈煜伟; 赵跃玲
Original assignee: Shenzhen Aijiafa Industrial Co ltd
Current assignee: Shenzhen Aijiafa Industrial Co ltd
Priority date: 2022-09-28
Filing date: 2022-09-28
Publication date: 2023-06-02
Anticipated expiration: 2032-09-28

Abstract

The utility model relates to the technical field of welding, and discloses a high-conductivity corrosion-resistant lead-free silver-containing welding tin bar, which comprises a tin bar main body, wherein a conductive layer is arranged in the tin bar main body, a welding assisting layer and a protective layer are arranged in the tin bar main body from inside to outside, and the conductive layer is arranged in the tin bar main body. According to the utility model, silver can be added in tin soldering, so that the conductivity of a tin soldering point is enhanced, the conductivity between a connecting wire and a circuit board is ensured, the conductivity between the connecting wire and the circuit board is more stable, and the use effect is better.

Description

Lead-free silver-containing soldering tin bar with strong conductivity and corrosion resistance

Technical Field

The utility model relates to the technical field of welding, in particular to a lead-free silver-containing soldering tin bar with strong conductivity and corrosion resistance.

Background

The tin bar is one of the products in the soldering tin, and can be divided into lead-containing tin bars and lead-free tin bars, which are used for welding the circuit board. The tin bar has the advantages of good wettability and fluidity, easy tin application, bright and full welding spots, and the demand for the tin bar in the market in recent years is greatly increased.

When the conventional soldering bar is used, articles are welded by heating and melting, as the conductivity of tin is only 12.6X10-8Ω & m when the temperature of tin is 20 ℃, and the conductivity is only one seventh of that of metallic copper at the same temperature, the conductivity of the connecting part of the connecting wire and the circuit board is easily affected when the connecting wire and the circuit board are welded by the soldering bar, and the tin is easily corroded by external alkali and certain acid, so that the tin has higher requirements for storage.

Disclosure of Invention

The utility model aims to solve the problems that in the prior art, when a connecting wire and a circuit board are welded by using a soldering tin bar, the conductivity of the connecting part of the connecting wire and the circuit board is easy to be influenced, tin is easy to be corroded by outside alkali and certain acid, and high requirements are also provided for storage.

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

the utility model provides a lead-free silver-containing soldering tin bar of strong electric conduction corrosion-resistant, includes the tin bar main part, be equipped with the conducting layer in the tin bar main part, the tin bar main part is equipped with soldering aid layer and inoxidizing coating from inside to outside, the inside of tin bar main part is equipped with the conducting layer.

Preferably, the left side wall fixedly connected with grafting piece of tin bar main part, the right side wall of tin bar main part has seted up the jack groove with grafting piece mutual match, can connect two tin bar main parts, avoids the tin bar main part collision when the transportation.

Preferably, the upper and lower lateral walls of the tin bar main body are provided with clamping grooves, so that the tin bar main body is conveniently clamped.

Preferably, the outer wall fixedly connected with a plurality of anti-skidding salient points of tin bar main part has improved shock absorption capacity and frictional capacity between two adjacent tin bar main parts.

Preferably, the conductive layer is silver, the soldering-assisting layer is resin, and the protective layer is electroplated nickel.

Preferably, the length of the tin bar main body is 300mm-400mm.

Compared with the prior art, the utility model provides a lead-free silver-containing soldering tin bar with strong conductivity and corrosion resistance, which has the following beneficial effects:

this corrosion-resistant leadless silver-containing tin bar of strong electric conduction through tin bar main part, conducting layer, the helping welding layer, the inoxidizing coating that set up, can add silver in the tin soldering to strengthen the conductivity of tin solder joint, guaranteed the electric conductivity between connecting wire and the circuit board, make the conductibility between connecting wire and the circuit board more stable, excellent in use effect.

Drawings

Fig. 1 is a schematic structural diagram of a strong-conductivity corrosion-resistant lead-free silver-containing solder strip according to the present utility model;

fig. 2 is a schematic diagram of the internal structure of a tin bar body in a lead-free silver-containing soldering tin bar with strong conductivity and corrosion resistance.

In the figure: 1. a tin bar body; 2. a conductive layer; 3. a welding assisting layer; 4. a protective layer; 5. anti-skid convex points; 6. a plug block; 7. a plug-in groove; 8. clamping grooves.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Referring to fig. 1-2, a high-conductivity corrosion-resistant lead-free silver-containing soldering tin bar comprises a tin bar main body 1, wherein a conductive layer 2 is arranged in the tin bar main body 1, a soldering-assisting layer 3 and a protective layer 4 are arranged in the tin bar main body from inside to outside, and the conductive layer 2 is arranged in the tin bar main body 1.

The left side wall fixedly connected with grafting piece 6 of tin bar main part 1, the right side wall of tin bar main part 1 has seted up the jack groove 7 that matches each other with grafting piece 6, can connect two tin bar main parts 1, avoids tin bar main part 1 collision when the transportation.

The upper and lower lateral walls of the tin bar main body 1 are provided with clamping grooves 8, so that the tin bar main body 1 is conveniently clamped.

The outer wall fixedly connected with a plurality of anti-skidding salient points 5 of tin bar main part 1 has improved shock absorption capacity and frictional capacity between two adjacent tin bar main parts 1.

The conductive layer 2 is made of silver, the conductivity of the silver is very high, the welding assisting layer 5 is made of resin, the protective layer 4 is made of electroplated nickel, and an extremely thin passivation film can be rapidly formed on the surface of the tin bar main body 1 and can resist the corrosion of the atmosphere, alkali and certain acids.

The length of the tin bar main body 1 is 300mm-400mm.

In the utility model, during use, silver can be added into the tin soldering through the tin bar main body 1, the conductive layer 2, the soldering assisting layer 3 and the protective layer 4, and after the tin bar is melted, the conductivity of a welding spot is very large, so that the conductivity of the welding spot is enhanced, the conductivity between a connecting wire and a circuit board is ensured, and the conductive performance between the connecting wire and the circuit board is more stable and has better use effect.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims

1. The utility model provides a lead-free silver-containing soldering tin bar of strong electric conduction corrosion-resistant, includes tin bar main part (1), its characterized in that is equipped with conducting layer (2) in tin bar main part (1), tin bar main part is equipped with from inside to outside and helps welding layer (3) and inoxidizing coating (4), the inside of tin bar main part (1) is equipped with conducting layer (2).

2. The lead-free silver-containing soldering tin bar with strong conductivity and corrosion resistance according to claim 1, wherein the left side wall of the tin bar main body (1) is fixedly connected with a plug-in block (6), and the right side wall of the tin bar main body (1) is provided with a plug-in groove (7) matched with the plug-in block (6).

3. The lead-free silver-containing soldering tin bar with strong conductivity and corrosion resistance according to claim 1, wherein the upper side wall and the lower side wall of the tin bar main body (1) are both provided with clamping grooves (8).

4. The lead-free silver-containing soldering tin bar with strong electric conduction and corrosion resistance according to claim 1, wherein a plurality of anti-slip protruding points (5) are fixedly connected to the outer wall of the tin bar main body (1).

5. The lead-free silver-containing solder strip with strong conductivity and corrosion resistance according to claim 1, wherein the conductive layer (2) is made of silver, the soldering-assisting layer (3) is made of resin, and the protective layer (4) is made of electroplated nickel.

6. A strongly conductive corrosion-resistant lead-free silver-containing solder strip according to claim 1, characterized in that the length of the strip body (1) is 300-400 mm.