CENTRIFUGAL CASTING
[EIRI/EDPR/1823] J.C.676,680
INTRODUCTION
Centrifugal casting or rotocasting is a casting technique that is typically used to cast thin-walled cylinders. It is noted for the high quality of the results attainable, particularly for precise control of their metallurgy and crystal structure. Unlike most other casting techniques, centrifugal casting is chiefly used to manufacture stock materials in standard sizes for further machining, rather than shaped parts tailored to a particular end-use.
In centrifugal casting, a permanent mold is rotated continuously about its axis at high speeds (300 to 3000 rpm) as the molten metal is poured. The molten metal is centrifugally thrown towards the inside mold wall, where it solidifies after cooling. The casting is usually a fine-grained casting with a very fine-grained outer diameter, owing to chilling against the mould surface. Impurities and inclusions are thrown to the surface of the inside diameter, which can be machined away.
Casting machines may be either horizontal or vertical-axis. Horizontal axis machines are preferred for long, thin cylinders, vertical machines for rings.
Most castings are solidified from the outside first. This may be used to encourage directional solidification of the casting, and thus give useful metallurgical properties to it. Often the inner and outer layers are discarded and only the intermediary columnar zone is used.
Centrifugal casting was the invention of Alfred Krupp, who used it to manufacture cast steel tyres for railway wheels in 1852.
COST ESTIMATION
Plant Capacity 1.10 MT/Day
Land & Building (7000 sq.ft.) Rs. 51.70 Lac
Plant & Machinery Rs. 31.18 Lac
Working Capital for 2 Months Rs. 67.20 Lac
Total Capital Investment Rs. 1.57 Cr
Rate of Return 38%
Break Even Point 64%
CONTENTS
INTRODUCTION
WHAT IS CENTRIFUGAL CASTING
FEATURES OF CENTRIFUGAL CASTING
USES AND APPLICATION
B .I.S SPECIFICATION
ADVANTAGES OF THE CENTRIFUGAL CASTING PROCESS
MARKET SURVEY
GLOBAL SCENARIO
IMPORTANT FINDINGS OF DIAGNOSTICS STUDY
PROJECT SUPPLY/DEMAND GAP FOR AUTO CASTING
IMPORTANT FOUNDRY CLUSTERS IN INDIA
PRESENT MANUFACTURERS OF CENTRIFUGAL CASTING
MANUFACTURING PROCESS
PROCESS FLOW CHART
CENTRIFUGAL CASTING
SEMICENTRIFUGAL CASTING
PLANT LAYOUT
SUPPLIERS OF PLANT AND MACHINERIES
SUPPLIERS OF RAW MATERIALS
APPENDIX – A:
01. PLANT ECONOMICS
02. LAND & BUILDING
03. PLANT AND MACHINERY
04. OTHER FIXED ASSESTS
05. FIXED CAPITAL
06. RAW MATERIAL
07. SALARY AND WAGES
08. UTILITIES AND OVERHEADS
09. TOTAL WORKING CAPITAL
10. TOTAL CAPITAL INVESTMENT
11. COST OF PRODUCTION
12. TURN OVER/ANNUM
13. BREAK EVEN POINT
14. RESOURCES FOR FINANCE
15. INSTALMENT PAYABLE IN 5 YEARS
16. DEPRECIATION CHART FOR 5 YEARS
17. PROFIT ANALYSIS FOR 5 YEARS
18. PROJECTED BALANCE SHEET FOR (5 YEARS)
