Tamra Dhatu Udyog Private Limited

Burrabazar, Kolkata, Kolkata, West Bengal

Copper product of highest purity

Tamra Bars & Profiles production facility is located in India. Manufactured from outstandingly pure Oxygen-Free Copper Wire Rod produced on site, Tamra is equipped with most advanced equipment in India, enabling us to deliver top quality product to the customers around the globe.

We take care of developing close partnerships to fully meet our customers requirements. The constant quality of our products, the respect of our lead times and the expertise of our team shows our willingness to develop sustainable partnerships on a daily basis.

PROCESS TECHNOLOGY

5000 Tonnes of Tamra Bars & Profiles capacity are installed in India. Tamra started producing bars and profiles using one of the most advanced technologies - the continuous extrusion process. Three state-of-the-art production lines produce excellent and high-quality profiles, strategically placed in Bhiwadi. The production lines have been developed and modified to improve efficiency.

Tamra is continually developing the process to push the boundaries and improve product quality. Regardless of their complexity or size, all profiles undergo a thorough risk analysis to ensure that our customers expectations are entirely satisfied. We undertake joint development projects for the electrical engineering industry, ensuring that our customers stay one-step ahead of their competitors.

Tamra has designed and manufactured number of profiles for renowned switchgears OEMs. Tamra provide profiles from simple to more complex forms according to customer specifications.

Tamra manufactures high purity copper anodes in different shapes and sizes for electrolytic copper plating. Nuggets and bar anodes are produced by a continuous casting process, while balls are produced by forging. After fabrication and sizing, the anodes are cleaned and washed so they are ready to use when they arrive.

Tamra provides two grades of copper to meet the needs of most plating. The oxygen content of oxygen free anodes is controlled to less than 10ppm to provide uniform dissolution in cyanide, pyrophosphate and fluoborate baths. Phosphorised copper anodes containing 0.04-0.06 percent phosphorus are required for acid copper solutions.

Nuggets are the most common form of copper anode. They are typically 1 in diameter by one-inch-long, but other sizes are available. Both OF and Phosphorus copper nuggets are available.

Tamra phosphorous copper anode with high quality plating properties, commences with supreme quality copper cathode melted with precision % of phosphorous under vigilant controlled conditions. Cast continuous rods are produced in inert atmosphere without any scope of copper's contact with air. Stage inspections are assured and monitored strictly during further process. Thus the oxygen free melt remains 0.04-0.06% consistently.

Tamra oxygen-free copper anodes are manufactured precisely for electroplating. Its fine grain structure with high purity level and clean surface, easily dissolved The high purity level 99.99% min. with cast crystal structure results into free flowing materials.

Tamra is well known for its high purity oxygen free copper, which is immune against hydrogen embrittlement. It is used in applications where high electrical and thermal conductivity are the essential requirements. It can be joined with all welding and brazing methods and it is suitable for manufacturing processes requiring extreme deformability.

Our Oxygen Free Wire Rod is produced with high-quality cathodes with a copper content of more than 99.99%. It is perfectly suited for continuous extrusion applications, renewable energy, magnet wire, satellite and space field, etc. Special attention is given to purity throughout the manufacturing process.

The product offers following advantages:

1. A clean metallic surface free of organic carbon
2. Excellent and homogenous product quality
3. Narrow tolerances for rod diameter
4. Resistant to hydrogen embrittlement

Tamra Oxygen Free Copper Wire Rod with less than 5ppm generates highest purity Copper, embracing Vertical Upward Continuous Cast process. Exclusive usage of LME Grade A copper cathode and rigid process control helps Tamra to deliver a product which is a class apart. Tamra has successfully nurtured a rare capability to produce Silver Bearing Copper.

Rectangular:The continuous radial extrusion Conform process results into clean, deburred, smooth, round edged conductors soft conductor. Extrusions of both Copper & Aluminium are processed through superior Conform technologyto deliver best material.

Round:A scratch free annealed Copper / Aluminium wire are produced using the best European technology ensures Tamra to produce joint-less conductors of highest quality.

With a seamless bare conductor and with efficient insulating production line in a dust free moisture controlled atmosphere helps Tamra to guarantee a product , which excels global standards.

The meticulous insulation line encompasses the gamut of transformers conductor like Kraft Paper, Crape Paper, Nomex, Mica, Polyster, Double glass and the variant of various insulation material required by the industry to meet varied applications.

Tamra is destined for ultimate success thru Quality Assurance right from Raw Materials to finished product passing through rigid quality checks of various electrical and mechanical parameters.

Tamra guarantees the super quality product through the stringent quality measures carried internally through its state-of-the-art lab, a few of which includes :

1. Oxygen analyser Spectrometer Profile Projector
2. Digital Conductivity Meter Hardness Tester Di-electric Meter

1. S (LHS) / Z (RHS)
2. Uni lay
3. Concentric
4. Sectoral Conductor
5. Round Compact Conductor

Tamra flexbile connector are manufactured by braided tapes with bare, tin or silber coated copper diameter of 0.10 /0.20 mm . Standrd flexible are non insualted and can be custom designed .Our braided connector are used wherever conductor are exposed to permanent motion and vibration.

1. Base material : ETP / OFE
2. Plating : Tin / Silver / Nickel
3. Type : Rope braided/ Square Braded and Flat Braded Conductors
4. Length : Custom desgined

Commutators are electrical components for which the advantages of Tamra-oxygen-free copper can be fully exploited.

Tamra-Oxygen-free copper is the purest form of the metal and offers unparalleled thermal and electrical conductivity as well as superior weldability. As a conductor, it generates much less internal heat than other copper grades and it suffers a much lower decrease in conductivity at high temperatures. A small amount of silver alloyed in copper increases the softening temperature of pure copper without any major sacrifice in electrical conductivity.

Our commutator strips, profiles and wires are also manufactured in the full range of oxygen-free silver bearing copper grades.

From Transformer to Towers from IT-Building to Engineering Colleges, from Hotel to Hospitals, earthing is very important for safety of human life, equipment and functioning of an electrical system.

Tamra offers strip in OFC grade and DHP grade suitable for various earthing applications.

Tamra Copper Strips is a trusted name amongst various pumps and motors manufacturing companies. Tamra Oxygen-free Copper Strips is best choice for edge winding. Tamra is a reliable name among various traction motor winding companies.

Tamra provide a wide range of flat copper bars for many applications in the electrical engineering industry.

Conditioning:

Our flat bars up to 6 m can be delivered in various finished conditions according to our customers requirement.

Alloys:

Tamra produces wide range of Flat Bars as below

Tamra provide a wide range of Round & Square Bars to the OEMs in India and Overseas.

Dimension range:

4 mm to 70 mm in diameter, lengths up to 6 m

Conditioning:

We offer several packaging solutions for round & square bars in order to fulfill all of our customers requirement precisely

Alloys:

Cu-ETP, Cu-OFE, CuAg

Tamra Bars and Profiles made of vairous alloys of copper are also used for trunking systems. The combination of high conductivity and durability make Tamra Copper the preferred choice where there are size restrictions and high current demands.

Added benefits due to the superior conductivity and reduced energy losses, which lead to a reduced lifecycle cost of the installation.

Our Electrodes are robust in combustion, which provides excellent durability and good earthing. We use fabricated pipes which are widely used in earthing applications.