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A high temperature wear and corrosion resistant rolls for use in strand guide section in slab casting machines and a process for manufacturing the same involving controlled cooling of the hot rolls which is thereafter followed by annealing and heat treatment developed high strength properties and finish. The wear and corrosion resistant rolls of the invention have long and durable effective life as slab caster rolls adapted to have increased life of about 750-800 heats. The slab caster rolls having improved wear and corrosion resistance further facilitate manufacturing of good quality slab free from surface defects. The extended life of the slab caster rolls avoid friction, shut down of machines and production losses.
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Notices, Deadlines & Correspondence
Notices, Deadlines & Correspondence
Patent Information
Application #
Filing Date
15 March 2000
Publication Number
Publication Type
Invention Field
Status
Email
Parent Application
Patent Number
Legal Status
Grant Date
2005-11-11
Renewal Date
Applicants
STEEL AUTHORITY OF INDIA LIMITED
RESEARCH & DEVELOPMENT CENTRE FOR IRON & STEEL, DORANDA, RANCHI
Inventors
1. VERMA RAMA SHANKAR
RESEARCH & DEVELOPMENT CENTRE FOR IRON & STEEL, DORANDA, RANCHI-834002
2. HAZRA AMITAVA GHOSH
RESEARCH & DEVELOPMENT CENTRE FOR IRON & STEEL,DORANDA,
RANCHI-834002
3. SINGH KRISHNA KUMAR
RESEARCH & DEVELOPMENT CENTRE FOR IRON & STEEL,DORANDA,
RANCHI-834002
4. CHATTERJEE TULSI DAS
RESEARCH & DEVELOPMENT CENTRE FOR IRON & STEEL,DORANDA,
RANCHI-834002
5. JHA SUDHAKER
RESEARCH & DEVELOPMENT CENTRE FOR IRON & STEEL,DORANDA,
RANCHI-834002
Specification
Documents
Application Documents
| # | Name | Date |
|---|---|---|
| 1 | 157-cal-2000-granted-specification.pdf | 2011-10-06 |
| 2 | 157-cal-2000-granted-reply to examination report.pdf | 2011-10-06 |
| 3 | 157-cal-2000-granted-pa.pdf | 2011-10-06 |
| 4 | 157-cal-2000-granted-letter patent.pdf | 2011-10-06 |
| 5 | 157-cal-2000-granted-form 3.pdf | 2011-10-06 |
| 6 | 157-cal-2000-granted-form 2.pdf | 2011-10-06 |
| 7 | 157-cal-2000-granted-form 19.pdf | 2011-10-06 |
| 8 | 157-cal-2000-granted-form 1.pdf | 2011-10-06 |
| 9 | 157-cal-2000-granted-examination report.pdf | 2011-10-06 |
| 10 | 157-cal-2000-granted-drawings.pdf | 2011-10-06 |
| 11 | 157-cal-2000-granted-description (complete).pdf | 2011-10-06 |
| 12 | 157-cal-2000-granted-correspondence.pdf | 2011-10-06 |
| 13 | 157-cal-2000-granted-claims.pdf | 2011-10-06 |
| 14 | 157-cal-2000-granted-abstract.pdf | 2011-10-06 |
| 15 | 00157-cal-2000-p.a.pdf | 2011-10-06 |
| 16 | 00157-cal-2000-form-3.pdf | 2011-10-06 |
| 17 | 00157-cal-2000-form-2.pdf | 2011-10-06 |
| 18 | 00157-cal-2000-form-18.pdf | 2011-10-06 |
| 19 | 00157-cal-2000-form-1.pdf | 2011-10-06 |
| 20 | 00157-cal-2000-drawings.pdf | 2011-10-06 |
| 21 | 00157-cal-2000-description(complete).pdf | 2011-10-06 |
| 22 | 00157-cal-2000-correspondence.pdf | 2011-10-06 |
| 23 | 00157-cal-2000-claims.pdf | 2011-10-06 |
| 24 | 00157-cal-2000-abstract.pdf | 2011-10-06 |