Thermit

Thermit

Exothermic welding (also known as aluminothermic welding) is a method that uses the superheated molten metal produced by the exothermic reaction between metal oxide and aluminum to heat the metal and realize the combination

Exothermic welding (also known as aluminothermic welding) is a method that uses the superheated molten metal produced by the exothermic reaction between metal oxide and aluminum to heat the metal and realize the combination

Exothermic welding began in the late 19th century, when h. Goldschmidt found that aluminum powder and metal oxide can start exothermic reaction by external heat source, and once the reaction can be self sustained, the general formula of this reaction is: metal oxide + aluminum (powder) → alumina + metal + heat, Exothermic fusion welding can be used to weld pure copper, brass, bronze, copper, copper clad steel, pure iron, stainless steel, wrought iron, galvanized steel, cast iron, etc.

Exothermic welding was founded at the end of 19th century, when h. Goldschmidt found that aluminum powder and metal oxide can start exothermic reaction by external heat source, and once the reaction can be self sustained, the general formula of this reaction is: metal oxide + aluminum (powder) → alumina + metal + heat energy, exothermic welding can mainly weld pure copper, brass, bronze, copper, copper clad steel, pure iron, no Rust steel, wrought iron, galvanized steel, cast iron, etc.

The welding process is easy to operate, does not need external power and heat source, and has low welding cost, stable and reliable quality. The conductivity is the same as that of the base metal. It is very suitable for the welding of field cables and other metal components. It is suitable for the connection between copper core cable and steel structure or between copper core cable during the installation of cathodic protection system.

The welding process is easy to operate, does not need external power and heat source, and has low welding cost, stable and reliable quality. The conductivity is the same as that of the base metal. It is very suitable for the welding of field cables and other metal components. It is suitable for the connection between copper core cable and steel structure or between copper core cable during the installation of cathodic protection system.

1. Features and advantages of exothermic welding

1. Features and advantages of exothermic welding

(1) The current cut-off flow of the welding point is equal to that of the conductor;

(1) The current cut-off flow of the welding point is equal to that of the conductor;

(2) The welding point is permanent and will not cause high resistance due to looseness or corrosion;

(2) The welding point is permanent and will not cause high resistance due to looseness or corrosion;

(3) The welding spot is like copper, but it is stronger than copper itself, and it is not affected by corrosive products;

(3) The welding spot is like copper, but it is stronger than copper itself, and it is not affected by corrosive products;

(4) The welding spot can withstand repeated large surge (fault) current without degradation;

(4) The welding spot can withstand repeated large surge (fault) current without degradation;

(5) The welding operation method is simple and easy to use;

(5) The welding operation method is simple and easy to use;

(6) The equipment is light and easy to carry;

(6) The equipment is light and easy to carry;

(7) During welding, no external power or heat source is required;

(7) During welding, no external power or heat source is required;

(8) The welding quality can be checked from the appearance;

(8) The welding quality can be checked from the appearance;

It can be used for welding copper, copper alloy, copper plated steel, all kinds of alloy steel including stainless steel and high resistance heating heat source material.

It can be used for welding copper, copper alloy, copper plated steel, all kinds of alloy steel including stainless steel and high resistance heating heat source material.