CN111112870A - Environment-friendly tin bar - Google Patents

Abstract

The invention relates to an environment-friendly tin bar, which comprises tin, nickel, copper and aluminum, and also comprises silver, bismuth and rare earth alloy, wherein the nickel content is 1-3.5 percent, the copper content is 2-4.5 percent, the aluminum content is 0.1-0.8 percent, the silver content is 5-6.3 percent, the bismuth content is 0.01-0.12 percent, the rare earth alloy is 0.3-1.8 percent, and the balance is tin. The invention has the advantages that: the alloy prepared by adding a trace amount of bismuth and bismuth-tin alloy into the tin bar is used for manufacturing a die for cold stamping forming of a metal sheet material, the temperature of the die is not lower than that of a steel die, the forming is fast, the updating is fast, and the alloy can be returned for use for multiple times; the invention has simple manufacturing components without pollution after adopting the formula, does not generate toxic steam to human bodies in the soldering process, and has the effects of good strength and good air tightness.

Description

Environment-friendly tin bar

Technical Field

The invention relates to the technical field of welding, in particular to an environment-friendly tin bar.

Background

Welding equipment and electrodes are common tools and materials used in industrial production. On one hand, many manufacturers for welding pipelines still use the old high-silver products, such as the most common materials of 45 silver, 35 silver and 25 silver, the silver is a noble metal, the material cost is high along with the market, and the cost pressure is increased suddenly; although some manufacturers have replaced lower silver products, the price is still less advantageous today due to the fact that the precious metal silver is in its composition, which is increasingly competitive. On the other hand, most of the common welding rods contain toxic and polluting components, which are volatilized during welding production to generate toxic steam, which is harmful to human bodies.

Disclosure of Invention

The invention aims to solve the technical problems and provides an environment-friendly tin bar.

In order to solve the technical problems, the technical scheme provided by the invention is as follows: an environment-friendly tin bar comprises tin, nickel, copper and aluminum, and also comprises silver, bismuth and rare earth alloy, wherein the nickel content is 1-3.5 percent, the copper content is 2-4.5 percent, the aluminum content is 0.1-0.8 percent, the silver content is 5-6.3 percent, the bismuth content is 0.01-0.12 percent, the rare earth alloy is 0.3-1.8 percent, and the balance is tin according to weight percentage.

As an improvement, the production steps of the environment-friendly tin bar are as follows:

the method comprises the following steps: respectively taking the components in percentage by weight;

step two: putting the weighed metal into a melting furnace, and fully stirring until the metal is completely melted to obtain a mixture;

step three: and pouring the mixture onto a mold, and performing cast molding.

As an improvement, after the mixture is obtained in the second step, the surface oxidation layer is scraped off, and then the casting forming in the third step is carried out. .

The invention has the advantages that: the alloy prepared by adding a trace amount of bismuth and bismuth-tin alloy into the tin bar is used for manufacturing a die for cold stamping forming of a metal sheet material, the temperature of the die is not lower than that of a steel die, the forming is fast, the updating is fast, and the alloy can be returned for use for multiple times; the invention has simple manufacturing components without pollution after adopting the formula, does not generate toxic steam to human bodies in the soldering process, and has the effects of good strength and good air tightness.

Detailed Description

The present invention is described in further detail below.

An environment-friendly tin bar comprises tin, nickel, copper and aluminum, and also comprises silver, bismuth and rare earth alloy, wherein the nickel content is 1-3.5 percent, the copper content is 2-4.5 percent, the aluminum content is 0.1-0.8 percent, the silver content is 5-6.3 percent, the bismuth content is 0.01-0.12 percent, the rare earth alloy is 0.3-1.8 percent, and the balance is tin according to weight percentage.

The production steps of the environment-friendly tin bar are as follows:

the method comprises the following steps: respectively taking the components in percentage by weight;

step two: putting the weighed metal into a melting furnace, and fully stirring until the metal is completely melted to obtain a mixture;

step three: and pouring the mixture onto a mold, and performing cast molding.

And after the mixture is obtained in the second step, scraping the surface oxide layer, and then carrying out casting forming in the third step. When the present invention is embodied, the present invention is carried out.

The first embodiment is as follows: according to the weight percentage, the nickel content is 1%, the copper content is 2%, the aluminum content is 0.1%, the silver content is 5%, the bismuth content is 0.01%, the rare earth alloy is 0.3%, and the balance is tin.

Example two: according to the weight percentage, the nickel content is 2%, the copper content is 3%, the aluminum content is 0.5%, the silver content is 5.8%, the bismuth content is 0.05%, the rare earth alloy is 1%, and the balance is tin.

Example three: according to the weight percentage, the nickel content is 3.5%, the copper content is 4.5%, the aluminum content is 0.8%, the silver content is 6.3%, the bismuth content is 0.12%, the rare earth alloy is 1.8%, and the balance is tin.

The present invention and its embodiments have been described above, but the description is not limitative, and the actual structure is not limited thereto. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (3)

1. An environmental protection tin bar which is characterized in that: the alloy comprises tin, nickel, copper and aluminum, and also comprises silver, bismuth and rare earth alloy, wherein the nickel content is 1-3.5 percent, the copper content is 2-4.5 percent, the aluminum content is 0.1-0.8 percent, the silver content is 5-6.3 percent, the bismuth content is 0.01-0.12 percent, the rare earth alloy is 0.3-1.8 percent, and the balance is tin according to weight percentage.

2. The environmentally friendly solder strip of claim 1, wherein: the production steps of the environment-friendly tin bar are as follows:

the method comprises the following steps: respectively taking the components in percentage by weight;

step two: putting the weighed metal into a melting furnace, and fully stirring until the metal is completely melted to obtain a mixture;

step three: and pouring the mixture onto a mold, and performing cast molding.

3. The environmentally friendly solder strip of claim 2, wherein: and after the mixture is obtained in the second step, scraping the surface oxide layer, and then carrying out casting forming in the third step.