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Development Of Manufacturing Process For High Alumina Insulators Round For Igbt Traction Converter
Abstract: The present invention relates to high alumina ceramic Insulator manufacturing process for Insulator round for IGBT (Insulated Gate Bipolar Transistors) traction converter in Locomotive and relative fields. Alumina ceramic where Al2O3 content is more than 90 percent and remaining of other special additives. The raw material was processed with special technique using Iso-pressing method or by uniaxial die pressing method at moderate pressure/ high pressure to achieve compaction. Pressed cylinder/ bisque fired cylinder was machined with distinct technique to achieve dimensions as per drawing, the machined piece was sintered and special glazed was coated on outer surface. Metal parts were assembled with help of special additive at the both side of the product. After that assembled products had to pass through test of visual inspection, dielectric test, tensile test, compression test, tightening torque test successfully. The product structure is found compacted, with high insulation resistance, breakdown, high temperature resistance, abrasion resistance, high strength.
Notices, Deadlines & Correspondence
Patent Information
Applicants
BHARAT HEAVY ELECTRICALS LIMITED
Inventors
1. ANTARA BARAL
2. K S RAVISHANKAR
3. RAVI MULLUR
4. SADANAND ACHARI
5. M MOHANA
Specification
DESC:Please find the attached file ,CLAIMS:Please find the attached file
Documents
Application Documents
| # | Name | Date |
|---|---|---|
| 1 | 201831010129-STATEMENT OF UNDERTAKING (FORM 3) [20-03-2018(online)].pdf | 2018-03-20 |
| 2 | 201831010129-PROVISIONAL SPECIFICATION [20-03-2018(online)].pdf | 2018-03-20 |
| 3 | 201831010129-POWER OF AUTHORITY [20-03-2018(online)].pdf | 2018-03-20 |
| 4 | 201831010129-FORM 1 [20-03-2018(online)].pdf | 2018-03-20 |
| 5 | 201831010129-Proof of Right (MANDATORY) [23-03-2018(online)].pdf | 2018-03-23 |
| 6 | 201831010129-CORRESPONDENCE-OTHERS [19-03-2019(online)].pdf | 2019-03-19 |
| 7 | 201831010129-COMPLETE SPECIFICATION [19-03-2019(online)].pdf | 2019-03-19 |
| 8 | 201831010129-FORM 18 [25-04-2019(online)].pdf | 2019-04-25 |
| 9 | 201831010129-OTHERS [20-09-2021(online)].pdf | 2021-09-20 |
| 10 | 201831010129-FER_SER_REPLY [20-09-2021(online)].pdf | 2021-09-20 |
| 11 | 201831010129-CLAIMS [20-09-2021(online)].pdf | 2021-09-20 |
| 12 | 201831010129-ABSTRACT [20-09-2021(online)].pdf | 2021-09-20 |
| 13 | 201831010129-FER.pdf | 2021-10-18 |
| 14 | 201831010129-PatentCertificate12-12-2023.pdf | 2023-12-12 |
| 15 | 201831010129-FORM 4 [28-03-2024(online)].pdf | 2024-03-28 |
Search Strategy
| 1 | SearchStrategyA-162DE_17-03-2021.pdf |