Material Analysis of Casting Valve and Forged Valve
Classification:
Release Time：2017-07-03
Casting valve is generally cast into the valve, under normal circumstances casting valve pressure grade is divided into high pressure, most of the caliber is above DN50. Forged valve is forged out, are generally used in high-grade pipeline, the caliber is relatively small, under normal circumstances are below DN50. Talking about the difference between the two: 1. casting valve 1, the so-called casting: is the process of smelting metal into a liquid that reaches certain requirements and pouring it into a casting mold, and obtaining a casting with a predetermined shape, size and performance after cooling, solidification, and cleaning. 2, cast out of the blank or parts cost is low, for the outside.
Casting valve is generally cast into the valve, under normal circumstances casting valve pressure grade is divided into high pressure, most of the caliber is above DN50. Forged valve is forged out, are generally used in high-grade pipeline, the caliber is relatively small, under normal circumstances are below DN50.
Talk about the difference between the two:
1. casting valve
1, the so-called casting: is the metal smelting into a liquid to meet certain requirements and poured into the mold, after cooling solidification molding, cleaning treatment to obtain a predetermined shape, size and performance of the casting process.
2. The cost of the cast blank or part is low. For parts with complex shapes or more complex cavities, it can better demonstrate its economy; at the same time, it has a very wide adaptability and good comprehensive mechanical properties.
3. Casting process is a kind of metal hot working process that our country has mastered earlier.
4. There are many kinds of casting, which are divided into two categories: general sand casting and special casting according to methods and habits.
2. forged valve
1. Forging: It is a processing technology that uses forging machinery to apply pressure to metal blanks to deform them to obtain forgings with certain mechanical properties, certain shapes and sizes.
2. The forging process can remove the as-cast looseness of the metal, and the mechanical properties of the forgings are generally higher than those of the same material.
3, forging according to the forming method can be divided into: open forging (free forging), closed mode forging.
4. Forging materials are mainly carbon steel and alloy steel. The ratio of the cross-sectional area of the metal before deformation to the cross-sectional area after deformation is the forging ratio. How to choose forging ratio correctly has a great relationship with improving product quality and reducing cost.
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