In the future the industry is likely to become more sophisticated and therefore wax and its quality control will increase in sophistication also. The wax of the future should be a low price, high quality material that can be reclaimed. In a competitive world it would be good to think wax manufacturers could aim to … Continue reading POSSIBLE FUTURE TRENDS IN FOUNDRY INDUSTRY
Investment casting wax materials are blend of numerous complex compounds. Each compound has been included to influence the final properties of the wax in some way. A few points that affect the quality of a casting wax and hence pattern production are listed. 1. Contraction and cavitation: Stable results on contraction and cavitations of a … Continue reading PROPERTIES AND THEIR INFLUENCE ON QUALITY OF INVESTMENT CASTING WAX
The procedure for determining and controlling silica content in colloidal silica slurry follows: Determination of soluble silica in slurries 1. Carefully decant the liquid portion from the sample of the slurry to be tested. 2. Centrifuge the decanted liquid until a relatively clear supernatant is obtained. 3. Determine the specific gravity of the supernatant using … Continue reading Determination of soluble silica in slurries
MOULD OR SHELL BUILDING This is the process where the ceramic shell is built around the wax trees / assemblies. The most economical and popular process is the dip process. This process is extremely versatile and offers very accurate control of the shell properties. The dip process; The wax tree is invested with ceramic coatings, … Continue reading WHAT IS THE PROCESS OF INVESTMENT CASTING?
DIE MAKING USED FOR PRODUCING WAX PATTERNS: This is the most important first step in the entire investment casting process. Any error in the die is reproduced in the finished casting. Extreme care is necessary when making a die. The die should be simple in its construction. This will make it easy to use and … Continue reading WAX PATTERNS IN INVESTMENT CASTING
The process of investment casting is specified over the other manufacturing methods due to unlimited flexibility of design. This flexibility permits one to take full advantage of the functional choices without making concessions necessary to fabricate the component by other means. Designers recommend the use of investment casting in any of the following situations: (a) … Continue reading CHALLENGES IN DESIGNING OF INVESTMENT CASTINGS