How to choose forged steel valves and cast steel valves

The difference between forged steel valves and cast steel valves

Forged steel valve and cast steel valve is mainly steel forging technology, processing form is different. Casting steel valve is a liquid casting molding, forging is a plastic deformation process, forging molding workpiece can improve the internal structure of the organization, good mechanical properties, uniform grains, important laborious workpiece must be forged; Casting will cause organizational deflection, organizational defects, of course, casting also has its own characteristics, some forming complex workpiece forging is not easy to open the mold, it took the casting.

What is cast steel material

Cast steel material is a kind of casting alloy with iron as main component, Its core characteristics include high strength, good toughness and excellent welding performance. which is mainly used to manufacture some parts with complex shape, difficult to forge or cut and form, but requiring high strength and plasticity.

Note: Cast steel material can be divided into cast carbon steel and cast alloy steel according to its chemical composition.

What is forged steel material

‌Forged steel is steel that is processed by forging. Forging is a manufacturing process that changes the shape of the material without melting it. Forged steel has uniform metal structure and excellent mechanical properties, including high strength, good toughness and excellent impact resistance.‌

Quick Facts: Forged steel valve has higher quality than cast steel valve, can withstand large impact force, plasticity, toughness and other mechanical properties are also higher than cast steel.

Some types of forged steel valves and cast steel valves

Next, NEWSWAY Valve Company to introduce you to two common, our company produced forged steel ball valve products:

Forged steel ball valve refers to the use of forging method and the production of all kinds of forging materials and forgings.

1. Fixed forged steel ball valve

It is mainly used to cut off or connect the medium in the pipeline, and can also be used for fluid regulation and control. The multi-pass ball valve in the pipeline can not only flexibly control the media confluence, diversion, and flow direction switch, but also can close any channel and make the other two channels connected.

2. Floating forged steel ball valve

All parts of the product are forgings, using lower mounting valve stem, equipment inverted sealing structure, inlaid valve seat, valve seat behind the equipment O-ring, to ensure that the medium is not leaking.

Similarly, taking our two products as examples, we will briefly introduce the common cast steel valve products:

1. Fixed cast steel ball valve

By cast steel ball valve opening and closing parts (ball) driven by the valve stem, and around the axis of the valve stem for rotary movement of the valve. Mainly used to cut off or connect the medium in the pipeline, can also be used for fluid regulation and control, especially suitable for fiber, small solid material and other media.

2. API 600 cast steel gate valve

It is suitable for cutting or connecting the pipeline medium in petroleum, chemical industry, thermal power plants and other working conditions of ANSI Class 150 ~ 2500 with working temperature < 600℃. Applicable medium: water, oil, steam, etc. Operation mode: manual, gear drive, electric, pneumatic and so on.