General Characteristics: The unique combinations of properties provided by aluminum and its alloys make aluminum one of the most versatile, economical, and attractive metallic materials for a broad range of uses—from soft, highly ductile wrapping foil to the most demanding engineering applications. Aluminum alloys are second only to steels in use as structural metals. Aluminum […]
Cast Iron The cast iron is obtained by re-melting pig iron and with coke and limestone in a furnace known as a cupola. It is an alloy of iron and carbon. The carbon contents in cast iron differ from 1.7% to 4.5%. Also, it contains a very small amount of silicon, sulfur, manganese, and phosphorus.. […]
INTRODUCTION The casting production is considered as one of the main factors inluencing the development of world economy. actual capacity of the world’s casting production, which is higher than 60 million metric tones per year, is strongly diversiied. The last decade brought signiicant changes in the world map of the greatest casting producers. Globalisation and […]
ABSTRACT In this research work, the effects of different amounts of acid hardener (30%, 40%, 60%, 80% weighted to theresin) on the hardening characteristics and hot-distortion properties of no-bake furan and no-bake phenolic bonded sand cores were studied. Bending tests were conducted on test bars with storage times of 1, 2, 3, 5, 7, 24h. […]
ABSTRACT The quality of chemically bonded sand cores used during the manufacturing process of cast components is highly dependent on the properties of the sand, which constitutes the refractory base media of the core. One of the main advantages of the application of different types of sands as molding aggregates that after casting, they can […]
ABSTRACT In casting industries with the development of technology there is need to cast complex and intricate parts very accurately in dimension and geometry with the good surface finish. after the development of additive manufacturing technologies the casting industries are able to improve casting by improving pattern making up to certain limit and also some […]
ABSTRACT In today’s world a casting production without any defect is almost impossible. After the application of various optimization techniques and process we still are not able to get the defect free castings. So it is critically important to analyze the root cause of casting defect with in the process itself, so that any changes […]
ABSTRACT Filling and solidification of molten metals are very complex and difficult to simulate correctly by conservative methods. For a large industrial application, it needs an alternate approach that is fast, reliable and user friendly. In current casting industries, product development paradigm is shifting from traditional trial-and-error in the workshop to computer-aided casting design and […]
ABSTRACT Foundries are still using trial and error methods to solve casting problems. There are benefits to using a more disciplined approach to define, identify and determine the root cause of a defect. Use of international standard defect codes for classifying the defects is illustrated. Powerful techniques such as defect mapping, questioning to narrow down […]
INTRODUCTION Modern industry stets very high standards for the materials applied. They should be resistant to mechanical and chemical wear. Many branches of industry demand materials with high physio-chemical and functional properties, such as high electrical and thermal conductivity, high strength, resistivity to abrasion and resistivity to corrosion. The material meeting these criteria is copper […]
INTRODUCTION Certain basic elements in the earlier development of investment casting process, as well as many current advancements made to the process, some due to the rapid growth in technology, are described in this chapter. Investment casting is often called lost wax casting, and it is based on one of the oldest metal forming processes. […]
Preheating and Interpas Temperature Terjadinya pengerasan dan britlle pada daerah Heat Affected Zone dapat mengakibatkan terjadinya crack selama proses pendinginan. Heat input yang rendah dapat mengurangi luasan yang terpengaruh daerah HAZ, akan tetapi pembentukan daerah HAZ yang brittle masih dapat terjadi. Pengerasan pada daerah HAZ dapat kita batasi dengan cara kombinasi preheating dan slow cooling […]
