VAJRAM TMT BARS 1 Your Trusted Iron Ore Partner
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VAJRAM TMT BARS 1
Your Trusted Iron Ore Partner
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VAJRAM TMT BARS2
about
Produced by using the most advanced & latest German Technology is our new generation, high strength VAJRAM TMT 500 EQR Bars, the using of quenching, self tempering and atmospheric cooling has enabled, the production of these high TMT Bars. The bar comes strapped with extra toughness, high yield stress and elongation, ductility, the ability to weld and an extent ability to bend truly, they’re the TMT Bars that have been made with no compromise on strength and ductility and they will surely give your construction longer life.
TMT 500 EQR
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MANUFACTURING PROCESS
VAJRAM TMT is manufactured through advanced technology under entirely computer controlled systems and tested through rigorous laboratory processes to ensure the best with functionality.
The plant has contemporary and totally automatic machines, which maintain temperature during the rolling process between 1000 ° to 1100 ° C. Then the bars pass through specially designed Quenching Box. The red-hot bars are now subjected to sudden and intense cooling. The cooling time and rate depend on the size of bars controlled by maintaining the desired temperature, Flow rate and temperature of water. The surface gets quenched to from a hard martensite structure while the inner layer remains comparatively hot and soft austenite. Finally, the bar is kept on Cooling Bed, where natural air cools it. The temperature gradient between inner hot core and outer layer makes the core reheat the quenched surface.
VAJRAM TMT production is controlled by high automated and computerized systems. The manufacturing process includes the sequencing of equipment, material detection and tracking, strip rolling, furnaces, boilers, material coating and water cooling.
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QUALITY STANDARDSWhen maximum reinforcement with excellent quality is needed
for any construction, the only name that fulfills all the international quality standards is VAJRAM TMT BAR.
‘VAJRAM’ has the most advanced technology, the purest and excellent quality raw materials and above all the highly qualified and proficient workforce. VAJRAM TMT bar is mass-producing international quality steel Fe 500 bars having the best possible features and thus has earned a very high name in the construction industry. VAJRAM TMT bar has the unparallel quality standards as it
uses the highest and purest grade Fe 500 with the best strength and the greatest mildness. The other salient features of VAJRAM TMT bar are far better corrosion-resistance, better bond-strength with cement, resistance to fire hazard, excellent ductility, higher fatigue strength, easy workability at site and definitely better results than BIS standards.
‘VAJRAM’ has developed a low cost and quick method for detecting the alumina in iron ores. This enables the blast furnace to reduce the impurity in the iron effectively. Our cost effective products and high-quality raw materials gave us success in our on- going projects.
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WHAT IS TMT BAR?(Thermo - Mechanical Treated Bars)
Thermo-Mechanically Treated Bars, (TMT Bars), are Extra HighStrength Rein-forcing bars which replacing any form of cold twisting, the technology of yester-years. In this process, the steel tmt bars receive a short, intensive cooling as they pass through the specially resigned Temp-core Water Cooling System after the last Rolling Mill Stand. The sudden quenching converts the surface layer of the steel bar to a hardened structure.
This phase of intensive cooling by the Tempcore System is followed by further cooling in atmosphere, so that the tem-perature between the core (which is steel hot) and the cooled surface layer is equal-ized, and the surface layer gets tempered by the heat from the core. The resulting structure is a tempered martensite zone at the periphery and a fine grain ferrite pearlite structure in the central zone.
MINING
SPONGE IRON
ROLLING MILL
FURNACE
SPONGE PLANT
TMT BUNDLE
BILLAT
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From Buildings to High RisesExcellent Strength | Better Weldability | Longer Life of Constructions Superiour Bendability | Earthquake Resistance | Corrosion Resistance
Perfect Straightness | Fire Resistance | Consistent Quality
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BIS SPECIFICATION FOR CHEMICAL PROPERTIES AVAILABLE SIZES
BIS SPECIFICATION FOR MECHANICAL PROPERTIES
CHEMICAL PROPERTIES(MAXIMUM)
MECHANICAL PROPERTIES(MAXIMUM)
CARBON % 0.300 0.250
CARBON EQUIVALENT (CE) % 0.420 0.420
SULPHUR (S) % 0.055 0.050
PHOSPHORUS (P) % 0.055 0.050
SULPHUR & PHOSPHORUS (S & P) % 0.105 0.095
NITROGEN (PPM) % 120 120
MANGANESE (MN) % 0.30-0.60 60
YIELD STRESS - YS (N/MM2) 500 500
ULTIMATE TENSILE STRESS UTS (N/MM2) 545 545
UTS / YS RATIO 1.08 1.10
TOTAL ELONGATION 16 16
FE 500 BISSTANDARD
FE 500 BISSTANDARD
VAJRAM TMT FE 500
VAJRAM TMT FE 500
(TYPICAL MAX VALUE)
(TYPICAL MAX VALUE)
6mm
16mm
8mm
20mm
10mm
25mm
12mm
32mm
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DOOR NO: 3/551, MANIYERI, VENGODI PO ELAPPULLY, PALAKKAD, KERALA - 678 622
+91 9745 006 [email protected]
www.vajramtmt.com
Honesty l Commitment l Transparency l Quality Assurance l Customer Satisfaction
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