ZENHARDR , Walzen make Hardened & Tempered Medium & High Carbon Steel Strips, finds wide applications in special industrial uses. ZENHARDR has excellent spring properties, uniform hardness and texture, ZENHARD has precision blanking ability and rationalizes further processing by eliminating post heat treatment & distortion and thereby increases productivity.
Walzen Strips Pvt. Ltd. manufactures ZENHARDR , Hardened & Tempered Steel Strips, conforming to National and International Standards viz, IS: 2507, DIN 17222. BS: 1449, ASTM A-682. High Carbon Low Alloy hardened and tempered steel strips is produced in-house from cold rolled steel strips and heat-treated in continuous line to develop high hardness, toughness to achieve required spring properties.
Steps involved for manufacture of Hardened & Tempered Steel strips: Austenitizing of Medium & High Carbon and Low Alloy steels is carried out in 12 M long gas fired furnace with automatic controls and heat resistant S.S. Muffle to provide inert cover to the strips. Quenchingl in oil produces very hard martensite, which is then tempered down in a 7 M long electrically heated tempering furnace. Variable speed DC drive with UPS back-up ensures uninterrupted processing even during power failure.
EDGE ROUNDING: Hardened and tempered strips are also available in rounded edges for special applications and for high fatigue life. This is done by machining of edges with profiled carbide tips.
GRINDING: Hardened and tempered strips are available in bright polished surface by grinding the surfaces with waterproof coated abrasive belts in strip grinding machine with coolant flow.
ZENHARD : Chemical composition & Sizes
| Specification | Grade | %C | %Mn | % P (max.) | % S(max) | % Si (max) | Size range |
|---|---|---|---|---|---|---|---|
| Medium & High Carbon | C55 | 0.50-0.60 | 0.60-0.90 | 0.035 | 0.025 | 0.35 | Width: 6.0-325mm Thickness: 0.40-3.00mm |
| C62 | 0.60-0.67 | 0.60-0.90 | 0.035 | 0.025 | 0.35 | ||
| C80 | 0.75-0.85 | 0.60-0.90 | 0.035 | 0.025 | 0.35 |
Special features: Minimum decarburisation, Uniform Hardness and Texture, High degree of toughness, Excellent Spring Properties, Precision blanking ability, Minimum edge camber, Flatness across width, No curling
Supply Condition: Hardened and Tempered
| Surface | : Furnace Blue-Grey or Bright Ground Finish |
| Edges | : Available in rounded edges |
| Tolerance | : On Width & Thickness as per BIS/International Standards. |
Standard Hardness:
| Thickness | Hardness |
| Upto 0.40mm | 525 - 600 Hv |
| Above 0.40 mm upto 0.80 mm | 475 - 550 Hv |
| Above 0.80mm | 425 - 500 Hv |
Typical Application and uses:
Special Note: Through integration of production facilities, Walzen can offer a complete range of Hardened & Tempered Steel Strips according to International Standard. Purchaser may furnish the following information to meet exact requirement.
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