The continuous casting tundish is the last metallurgical vessel through which molten metal flows before solidifying in the continuous casting mould. It serves as a buffer and links the discontinuous process of the secondary metallurgy in the ladle with the continuous casting process in the mould.
What is the use of Tun dish in the steel plant?
In metal casting, a tundish is a broad, open container with one or more holes in the bottom. It is used to feed molten metal into an ingot mould so as to avoid splashing and give a smoother flow.
Why is the mold of continuous casting provided with reciprocating motion?
Lubrication theory has shown that, owing to the geometry of the mold flux channel between the solidifying shell at the meniscus and the straight mold wall, significant pressure gradients capable of deforming the meniscus can be generated in the flux by the reciprocating motion of the mold relative to the shell.
What metals can be used in continuous casting?
This process is used most frequently to cast steel (in terms of tonnage cast). Aluminium and copper are also continuously cast.
Where is continuous casting used?
Continuous casting (CC) has been widely accepted as the most important production process in the steel industry. In the casting process, molten steel from the ladle flows through the tundish into a mould. Within the mould, the molten steel freezes against the water-cooled copper mould walls forming a solid shell.
What is called continuous casting?
Continuous casting, also known as strand casting, is the process where a metal is heated until it liquefies. It is used to cast metals of uninterrupted lengths. In this process, the molten metal is continuously supplied to the mold. The mold has an indeterminate length.
What are different types of casting?
10 types of casting process
What are the advantages of continuous casting?
Continuous casting allows manufacturing metal slabs or bars in large amounts by short time. Sprue, runner, riser not use thus, no waste metal this leads to 100% casting yield. Mechanical Properties are high and extremely reproducible. Increased use of purchased scrap when.
Which stage in continuous casting is critical?
The most critical part of the process is the initial solidification at the meniscus, found at the junction where the top of the shell meets the mold, and the liquid surface.
Who invented continuous casting?
Sir Henry Bessemer
How many types of continuous casting machines are there?
There are two types of mould design namely (i) tubular mould, and (ii) plate mould. Tubular moulds conventionally consist of a one piece copper lining that usually has relatively thin walls and is restricted to smaller billet and bloom casters.
Which of the following is a limitation of die casting but is overcome in vacuum die casting?
10. Which of the following is a limitation of die casting, but is overcome in vacuum die casting? Explanation: In die casting the major problem is the air left inside the cavity when the die is closed, but in the case of vacuum die casting this air is evacuated out.
Which of the following are the special casting process?
Special Casting Processes
What is Cope in manufacturing?
Cope and Drag refers respectively to the top and bottom of the mold use in Sand Casting. They are metal flasks used to contain and support the Green Sand during the mold making and mold pouring processes.
Which of the following problem arises in die casting?
1. Which of the following problems arises in die casting that can be solved by having vacuum die casting? Explanation: The major problem with die casting is the air left in the cavity after closing of die. Since the air cannot escape out so it remains inside the casting.
Which of the following is the main purpose of using die casting?
Dimensional accuracy and stability – Die casting produces parts that are durable and dimensionally stable, while maintaining close tolerances. They are also heat resistant. Strength and weight – Die cast parts are stronger than plastic injection moldings having the same dimensions.
Why ladle is used in die casting Mcq?
Explanation: When the molten metal is ladled into the shot chamber of the machine either manually by a hand ladle or by an auto ladle, which is a form of a robotic device. This process reduces the contact time between the molten metal and the shot chamber, so the high melting temperature materials can be cast easily.
What is permanent mold casting process?
Permanent mold casting is a process in which molten metal is poured into a metal mold made from steel or cast iron to create new metal pieces. The metal mold is called a permanent mold because it can be reused.
What is the main advantage of permanent mold processes?
The advantages of the permanent mold and semipermanent mold casting processes are: reasonable piece costs resulting from the high production rates achieved with metal molds (especially water-cooled molds) compared to sand and investment casting, and lower investment required for equipment when compared to low-pressure ...
What are the defects in casting process?
TYPES OF CASTING DEFECTS
