Can copper and iron be welded together? How to deal with the oxidation of copper surface

Copper is a metal element that exists in the earth's crust and oceans. It has good ductility, high thermal and electrical conductivity, and is durable. It is a purple-red solid at room temperature and is soft. So can copper be welded together with the iron we often see? Let's take a look below.

Contents of this article

1. Can copper and iron be welded together?

2. How to deal with the oxidation of copper surface

3. What are the reaction conditions of copper and oxygen?

Can copper and iron be welded together?

Copper and iron can be welded together. Brazing is the common method for welding copper and iron, but fusion welding can also be used. For brazing, flame brazing or high-frequency brazing can be used. For fusion welding, DC argon arc welding can be used.

Welding, also known as fusion, is a manufacturing process and technology that joins metals or other thermoplastic materials by heating, high temperature or high pressure.

The energy sources for welding include: gas flame, electric arc, laser, electron beam, friction and ultrasonic wave.

Metal welding can be divided into three categories according to the characteristics of the process: fusion welding, pressure welding and brazing.

How to deal with copper surface oxidation

You can use a special copper bright cleaning agent to clean it, or use an environmentally friendly copper polishing liquid to chemically polish the copper. After treating the oxide on the copper surface, use a copper ring passivation liquid for passivation treatment. A protective film can be formed on the copper surface to prevent copper from corrosion, rust and discoloration.

Copper is a metallic element found in the Earth's crust and oceans that is ductile, highly conductive to heat and electricity, and durable.

Copper is one of the earliest metals used by humans. In prehistoric times, open-pit copper mines were mined and copper was used to make weapons and tools.

Copper is a purple-red solid at room temperature. Pure copper is soft, and its surface is reddish-orange with a metallic luster when just cut.

What are the conditions for the reaction between copper and oxygen?

The reaction conditions of copper and oxygen are both heating and high temperature, but the reaction products obtained under different conditions are also different. They are: 2Cu O₂=Δ=2CuO; 4Cu O₂=high temperature=2Cu₂O.

Copper is a transition element with the chemical symbol Cu and the atomic number 29. Pure copper is a soft metal with a reddish-orange metallic luster when just cut, and a purple-red color when pure. It has good ductility, high thermal and electrical conductivity, so it is the most commonly used material in cables and electrical and electronic components. It can also be used as a building material and can be composed of many kinds of alloys. Copper alloys have excellent mechanical properties and very low resistivity, of which bronze and brass are the most important. In addition, copper is also a durable metal that can be recycled many times without losing its mechanical properties.

Copper salts are the most common copper compounds. Their hydrated ions are often blue, while chlorine as a ligand makes them appear green. They are the source of the colors of minerals such as azurite and turquoise, and have been widely used as pigments in history. Copper building structures will produce patina (basic copper carbonate) when they are corroded. Decorative arts mainly use metallic copper and copper-containing pigments.