Introduction to investment casting Investment casting is basically a metal shaping technique. It is a foundry practice by which high precision castings are manufactured. This is a specialised foundry technology and is considered a high – tech area. This process has gained popularity on the basis of the superior quality of the castings produced. In … Continue reading INTRODUCTION TO INVESTMENT CASTING
The objective of this review is to have a look at how investment casting wax has developed, with a summary of structure, categories of casting wax available, properties and wax pattern production. The review then moves on to look at the possible direction wax may follow in the future considering quality control, choice of a … Continue reading REVIEW OF INVESTMENT CASTING WAX
Narcol INV30 Aqueous Colloidal silica is a popular binder used in the investment casting foundry industry today. It is safe, economical, and easy to use. WHAT IS COLLOIDAL SILICA? Colloidal silica is a stable dispersion of millimicron size SiO2 particles in water. The silica particles are non-agglomerated, spherical in shape, negatively charged, and stabilized with … Continue reading SILICA SOL IN THE INVESTMENT CASTING FOUNDRY INDUSTRY
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
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
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?