| Title of Invention | A PROCESS FOR THE MANUFACTURE OF COMMERCIAL GRADE NODULAR/SEMI NODULAR CAST IRON ALLOY |
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| Abstract | A process for manufacturing nodular semi nodular ductile/cast iron alloy comprising the following steps:- B. de – sulphurising of the molten iron metal taken from cupola arc furnace induction furnace or rotary if required, treating for reducing the sulphur contents o0f the molten metal to around 0.025% - 0.035% preferably by treating the molten metal with soda ash (Sodium carbonate-approximately 1% by weight of the molten metal, and separating the floating slag so formed); B. taking nodulariser alloy consisting of magnesium (Mg) 8% to 10% preferably 9.5% Silicon (Si) 43% to to 48% preferably 44.50%, Calcium (Ca) 0.8 to 2.5% preferably 2.20%, Rare Earths (RE) 0.8 to 2.5% preferably 2.00%, Aluminium A1) upto 1.25 preferably 0.60%, Iron (Fe) balance, in the pocket of the ladle, from 1 to 2% by weight of the molten metal; C. covering the above said alloy with incoulant Ferro Silican and iron chipping, turning and the like; C. pouring the molten metal, mainly consisting : Carbon-3.2 to 3,5% Si – 1.4 to 2%, Mn – 0.2 to 0.95, S- 0.01% to 0.2%, Fe balance, at temperature between 1225˚C to 1550˚C, preferably between 1300˚C to 1500˚C, in the said ladle resulting to a self mixing violent reaction, forming ductile/cast iron alloy having spheroidal or spherulital graphite structure, improved mechanical properties with excellent weldability which is suitable for producing large size section having higher section thickness, such as shells of sugar mill rollers the like |
| Full Text | N/A |
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1253-mum-2004-abstract(3-10-2005).pdf
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| Patent Number | 223739 | ||||||||
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| Indian Patent Application Number | 1253/MUM/2004 | ||||||||
| PG Journal Number | 06/2009 | ||||||||
| Publication Date | 06-Feb-2009 | ||||||||
| Grant Date | 22-Sep-2008 | ||||||||
| Date of Filing | 22-Nov-2004 | ||||||||
| Name of Patentee | S.B. RESHELLERS PVT. LTD. | ||||||||
| Applicant Address | PLOT NO. D5 & D15, M.I.D.C. INDUSTRIAL ESTATE, SHIROLI, KOLHAPUR 416122 | ||||||||
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| PCT International Classification Number | C22C1/00 | ||||||||
| PCT International Application Number | N/A | ||||||||
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