Large Hollow Tube Forgings

Large hollow tube forgings refer to large-diameter, thick-walled tube forgings that work under high temperature and high pressure environments. They are mainly used in energy fields such as nuclear power, petrochemicals, and hydropower, and are core components of major technical equipment.

Nuclear power equipment:

In nuclear power equipment, large hollow tube forgings are used to manufacture reactor pressure vessels, regulators, and barrel forgings in evaporators. These components need to withstand high temperatures, high pressures, and neutron irradiation, so their quality and service life directly affect the operating safety and life of the entire nuclear reactor.

Petrochemical equipment:

In the petrochemical industry, large hollow tube forgings are used to manufacture key equipment such as high-pressure vessels, reactors and heat exchangers. These equipment work under high temperature and high pressure environments, and have extremely high requirements for the strength and corrosion resistance of the materials. The forging process can improve the uniformity and density of the material structure, thereby significantly improving its mechanical properties and service life.

Hydropower equipment:

In hydropower equipment, large hollow tube forgings are used for rotors and stators of large turbines and generators. These components need to operate under high pressure and high-speed conditions, and have high requirements for material fatigue strength and fracture resistance. Through reasonable forging and heat treatment processes, the performance of these key components can be significantly improved to ensure the reliability and service life of hydropower equipment.

Hydraulic cylinder:

In hydraulic presses, cylinder forgings are used to manufacture the drive cylinders of hydraulic presses. Because the forging process can provide better organizational structure and mechanical properties, forged steel parts show better stability and durability under high pressure conditions. However, the cost of forged steel parts is high, so forging and welding are sometimes used to reduce costs and maintain high performance.

4140 steel shaft forgings chemical composition

Steel Grade	C	Si	Mn	P	S	Cr	Mo
AISI 4140	0.380 – 0.430	0.15 – 0.30	0.75 – 1.0	≤0.035	≤0.040	0.80 – 1.10	0.15 – 0.25

mechanical properties

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production process:

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4140 alloy steel forgings advantages

4140 steel forgings are alloy steel forgings containing high levels of chromium and molybdenum. 4140 alloy steel forgings have the characteristics of high strength, good hardenability, good toughness, and small deformation during quenching.

High strength:

The strength of 4140 steel forgings belongs to high-strength alloy steel forgings, with high yield strength and high tensile strength.

Good hardenability

After quenching, 4140 steel has good hardenability and can meet the requirements of cooling rate.

Good toughness

4140 steel forgings have good toughness, can withstand large impact loads, and are not prone to cracks.

Small deformation during quenching

4140 steel forgings have little deformation during the quenching process and can be used to manufacture parts requiring high dimensional accuracy.

High high-temperature creep strength and endurance strength:

4140 steel forgings have good strength and endurance performance at high temperatures.

How we guarantee our quality?

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NDT test after rough machining

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mechanical properties test

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Our steel forgings are widely used in wind power industry, chemical industry, machinery industry, automotive industry, marine industry, power plant industry, metallurgy industry, mining industry, petrochemical industry and other industries.

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Jiangsu Weirun Forging Co,.ltd is a professional manufacturer and supplier of steel forgings in Jiangsu Province China. We supply quality steel forgings with heat treatment and rough machining services according to your requirement. You can get carbon steel forgings, alloy steel forgings and stainless steel forgings from us for your manufacturing of shafts, gears, sleeves, drums, fasteners, clamps, cylinders ect.

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Large Hollow Tube Forgings

Nuclear power equipment:

Petrochemical equipment:

Hydropower equipment:

Hydraulic cylinder:

4140 steel shaft forgings chemical composition

mechanical properties

production process:

4140 alloy steel forgings advantages

High strength:

Good hardenability

Good toughness

Small deformation during quenching

High high-temperature creep strength and endurance strength:

How we guarantee our quality?

NDT test after rough machining

mechanical properties test

Application Industries

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