Amiable Impex thermit welding work on a railway track

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Exothermic Welding

Amiable Impex is the Manufacturer of Exothermic Weldinging Powder, Exothermic Graphite Mold and Exothermic Weld Accessories.

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Complete Connection Systems

Exothermic Welding Solutions by Amiable Impex: Quality You Can Trust

At Amiable Impex, we specialize in providing top-quality Exothermic Welding solutions designed for various industrial applications. Our Exothermic Welding kits are engineered to deliver superior performance, ensuring efficient and reliable electrical connections. With years of expertise in the field, Amiable Impex offers a comprehensive range of Exothermic Welding products, including graphite molds, weld powders, and all essential accessories required for flawless welding operations.

Our Exothermic Welding products are ideal for grounding systems, lightning protection, and other applications requiring durable and high-performance welds. We are committed to quality, precision, and customer satisfaction, making us a trusted choice for all your welding needs.

Why Choose Amiable Impex for Your Exothermic Welding Needs:

Superior Quality

Our Exothermic Welding products are crafted using high-quality materials, ensuring long-lasting and reliable welds.

Global Reach

We serve customers worldwide, providing timely delivery and exceptional support for all your Exothermic Welding requirements.

Innovative Solutions

With continuous innovation, Amiable Impex ensures the highest standards in Exothermic Welding technology.

Comprehensive Kits

We offer complete kits with all the necessary tools for efficient Exothermic Welding, making it easy to get started.

As a leading Exothermic Welding Manufacturer, Amiable Impex is dedicated to providing top-notch products that meet the highest industry standards.

Learn more on Exothermic Weld

Molecular jointNot just a mechanical one

There are many advantages of using Exothermic Welding powder. The most important one being that the process produces a molecular joint and not just a mechanical one in between the conductors. It is produced through a starting reactant which provides enough energy to activate the welding reaction. This takes place quickly and safely inside a graphite mould. The mould is designed specifically for a certain union depending on the elements to be welded and the joint type required. We guarantees all types of joints, not only copper cable unions but also to weld tapes, brass metallic pieces, stainless steel, steel ground rods covered with copper, etc. It is especially useful for joining dissimilar metals.

Watch the processExothermic Welding in action

AURAWELD Exothermic Welding powder product — **Exothermic-Welding-powder-AURAWELD**

Application range

When Exothermic Welding is used:

Exothermic welding is most commonly used for permanently joining copper conductors. It is the only acceptable means of bonding copper to galvanized cable. It can also be used on stainless steel, cast iron, steel, brass, bronze, and more. If joining two dissimilar metals, exothermic welding is a good option. You’ll find Exothermic welding under the names of Such as AIWELD®

Connection performance

Features of using Exothermic Welding for Connection Joint:

Exothermic Welding Powder

Exothermic Welding powder is a welding process for joining two electrical conductors that employs super heated copper alloy to permanently join the conductors. The process employs an exothermic reaction of a copper Thermite composition to heat the copper, and requires no external source of heat or current. The chemical reaction that produces the heat is an alumina Thermit reaction between aluminium powder and a metal oxide.

The reaction reaches very high temperatures, depending on the metal oxide used. The reactants are usually supplied in the form of powders, with the reaction triggered using a spark from a flint lighter. The activation energy for this reaction is very high however, and initiation requires either the use of a “booster” material such as powdered magnesium metal or a very hot flame source. The aluminium oxide slag that it produces is discarded.

When welding copper conductors, the process employs a semi-permanent graphite crucible mould, in which the molten copper, produced by the reaction, flows through the mould and over and around the conductors to be welded, forming an electrically conductive weld between them. When the copper cools, the mould is either broken off or left in place. Alternatively, hand-held graphite crucibles can be used. The advantages of these crucibles include portability, lower cost (because they can be reused), and flexibility, especially in field applications.

The weld formed has higher mechanical strength than other forms of weld, and excellent corrosion resistance. It is also highly stable when subject to repeated short-circuit pulses, and does not suffer from increased electrical resistance over the lifetime of the installation. However, the process is costly relative to other welding processes, requires a supply of replaceable moulds, suffers from a lack of repeatability, and can be impeded by wet conditions or bad weather (when performed outdoors).

Examples of permanent Exothermic Weld connection joints — Exothermic Weld

Technical knowledge

Exothermic Welding FAQs

How Exothermic weld works ?

The Exothermic Welding System is a welding process that utilizes an exothermic reaction (a chemical reaction that releases energy in the form of very high temperatures and light) to permanently join metal connections. Exothermic Welding uses a light-weight, clamp-on graphite mold to safely position and contains any weld required. The exothermic reaction creates an intense miniature furnace with temperatures exceeding 2,500 °F, instantly producing molten metal which flows into the weld cavity, filling any available space. After waiting adequate time after the initial process, the mold can be released and the finished connection removed.

Why Use Exothermic Welding:

The Exothermic Connecting created a permanent, homeogreneous, and molecular bond that cannot loosen or corrode, and will carry more current that the conductor.The Exothermic Welding Connection are solid molecular bonds, they do not loosen or corrode over the lifetime of connection. The ame cannot be said about other methods; such as brazing, crimp, split bolt, or compreion type connections.

Exothermic Welding Powder Overview :

In Exothermic Welding powder, aluminium dust reduces the oxide of another metal, most commonly iron oxide, because aluminium is highly reactive. Iron(III) oxide is commonly used: Fe2O3 + 2 Al → 2 Fe + Al2O3

The products are aluminium oxide, free elemental iron, and a large amount of heat. The reactants are commonly powdered and mixed with a binder to keep the material solid and prevent separation. Commonly the reacting composition is 5 parts iron oxide red (rust) powder and 3 parts aluminium powder by weight, ignited at high temperatures. A strongly exothermic (heat-generating) reaction occurs that via reduction and oxidation produces a white hot mass of molten iron and a slag of refractory aluminium oxide.

The molten iron is the actual welding material; the aluminium oxide is much less dense than the liquid iron and so floats to the top of the reaction, so the set-up for welding must take into account that the actual molten metal is at the bottom of the crucible and covered by floating slag.

Other metal oxides can be used, such as chromium oxide, to generate the given metal in its elemental form. Copper thermite, using copper oxide, is used for creating electric joints in a process called Cad welding: 3 CuO + 2 Al → 3 Cu + Al2O3

Exothermic welding process

Tools Required For Exothermic Welding Process

Exothermic welding, also known as thermite welding, is a process that requires specific tools to achieve a successful weld. The essential tools for exothermic welding include

1)Graphite Mould
2)Mould Handle Clamp (Universal)
3)Steel Metal Disk
4)Exothermic Weld Powder
5)Ignite Powder (Starting Powder)
6)Gloves
7)Flint Gun
8)Brush (Soft and Hard)
9)Slag Removal Tool
10)File Card
11)Sealing Compound
12)Flame Torch

Amiable Impex is the only Company in India that offer Quality of Exothermic Welding Powder and Exothermic Welding Accessories at reasonable rate and ensures delivery within 10 to 15 days in India. Get high quality of Our products at quickest lead time with fast response time. Full Customer Satisfaction. Our Products are tested and approved by CPRI Govt Body, Its also CE and ROHS Certified and we are also certified by ISO 9001:2008, Crisil verified Company.