Continuous casting, also called strand casting, is
the process whereby molten metal is solidified into a “semifinished” billet, bloom, or slab for subsequent rolling in the finishing mills
. Prior to the introduction of continuous casting in the 1950s, steel was poured into stationary molds to form ingots.
What is the use of continuous casting?
Continuous casting, also known as strand casting, is the process where a metal is heated until it liquefies. The molten metal is then allowed to solidify until it becomes a semi-finished slab that is later rolled in the finishing mill. It is used
to cast metals of uninterrupted lengths
.
What is the casting process explain the continuous casting process?
Continuous casting, also called strand casting, is
the process whereby molten metal is solidified into a “semifinished” billet, bloom, or slab for subsequent rolling in the finishing mills
. Prior to the introduction of continuous casting in the 1950s, steel was poured into stationary molds to form ingots.
What is continuous casting machine?
Continuous casting (CC) is
a process of producing an infinite solid strand from liquid steel by continuously solidifying it as it moves through
a CC machine. … The basic operation of the CC machine is to convert liquid steel of a given composition into a strand of desired shape and size through a group of operations.
What is the principle of continuous casting?
The principle of the continuous casting method is
simple
(Figure 1.8. 1). The liquid steel in a ladle is transferred to the casting machine. … The thickness of the solidified shell increases progressively when it is withdrawn through the machine.
What are the different types of casting?
- (1)Sand casting.
- (2)Investment casting.
- (3)Die casting.
- (4)Low pressure casting.
- (5)Centrifugal casting.
- (6)Gravity die casting.
- (7)Vacuum die casting.
- (8)Squeezing die casting.
What is the difference between ingot casting and shape casting?
The shape casting is removed from the mould after solidification, and then heat treated and machined into the finished component. Ingot casting, on the other hand,
involves pouring the metal into a mould having a simple shape
, such as a bar or rod.
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.
What is the function of tundish and where is it used?
3.1 Tundish. The main functions of the tundish are to be
a steel reservoir between the ladle and the mold
, and in the case of multistrand casters to distribute the liquid into the molds. The first item is of special importance during ladle change.
Who invented continuous casting?
Continuous casting was invented during the mid-19th century. In 1857, English inventor
Sir Henry Bessemer
filed a patent for the world’s first casting process involving the use of multiple rollers. Here are the basic steps of continuous casting: Metal is heated until it turns from a solid to a liquid, molten state.
Why continuous casting has benefited the industry?
The modern steel industry uses continuous casting, which is
more efficient
. This technique allows molten steel from the ladle to be cast directly into the basic shape that the customer wants.
Why continuous casting has benefited the industry in these ways?
The continuous casting method offers
a superior surface finish and virtually eliminates internal porosity and centerline shrinkage
. The majority of metal castings are produced through the sand casting process.
What is the function of a tundish in the continuous casting process?
In continuous casting of steel, a tundish traditionally refers to an intermediate vessel placed between the ladle and the mold,
designed to supply and distribute molten steel to different continuous casting molds at a near constant rate
.
What are the common defects of casting?
- Gas Porosity: Blowholes, open holes, pinholes.
- Shrinkage defects: shrinkage cavity.
- Mold material defects: Cut and washes, swell, drops, metal penetration, rat tail.
- Pouring metal defects: Cold shut, misrun, slag inclusion.
- Metallurgical defects: Hot tears, hot spot.
What are the application of centrifugal casting?
Centrifugal casting provides
high material soundness
and is the metal casting process of choice for jet engine compressor cases, petrochemical furnace tubes, many military and defense components, and other applications requiring high reliability.
What is vacuum casting process?
Vacuum casting is
a casting process for elastomers using a vacuum to draw the liquid material into the mold
. This process is used when air entrapment is a problem, there are intricate details or undercuts, or if the material is fiber or wire reinforced.
