Drop Forging Process | Custom Hammer Forging Services

What is the Drop Forging Process?

The drop forging process is a metal – shaping method that uses the force of a falling hammer or a press to deform a heated metal workpiece. This process is also known as the drop forging technique or method. It’s a fundamental part of the forging industry, enabling the production of high – strength components. Whether it’s the press drop forging process or the hammer forging process, the principle remains the same: applying force to shape the metal.

Types of Drop Forging Processes

Hot Drop Forging Process

In the hot drop forging process, the metal workpiece is heated to a high temperature, typically above its recrystallization temperature. This makes the metal more malleable, allowing it to be easily shaped under the impact of the hammer or press. Hot drop forging is suitable for large – scale production and for working with metals like carbon steel and alloy steel. It can produce complex shapes with good grain flow, enhancing the mechanical properties of the final product.

Cold Drop Forging Process

The cold drop forging process, on the other hand, is carried out at room temperature. This process offers higher dimensional accuracy and a better surface finish compared to hot forging. However, it requires more force to deform the metal, as it is less malleable at lower temperatures. Cold drop forging is often used for small – to – medium – sized parts made of materials that can withstand the high forces involved, such as certain grades of carbon steel.

Net Shape Drop Forging Process

The net shape drop forging process aims to produce a forging that is close to the final shape of the component, minimizing the need for subsequent machining. This process requires precise control of the forging parameters and the use of advanced dies. It can significantly reduce production costs by saving material and machining time, especially for parts where high precision is required.

Materials for Drop Forging

Carbon Steel Drop Forging Process

Carbon steel is a commonly used material in drop forging. It offers a good balance of strength, ductility, and cost – effectiveness. The carbon content in the steel affects its properties, with higher carbon content resulting in increased hardness and strength but reduced ductility. Carbon steel drop forging is suitable for a wide range of applications, from simple tools to automotive components.

Alloy Steel Drop Forging Process

Alloy steel, which contains additional alloying elements such as chromium, nickel, and molybdenum, is used when enhanced properties are required. Alloy steel drop forging can produce components with higher strength, corrosion resistance, and heat resistance. These properties make alloy steel – forged parts ideal for applications in the aerospace, military, and high – performance automotive industries.

In conclusion, the drop forging process, with its various types and suitability for different materials, is a versatile and essential manufacturing method. Whether it’s the hot, cold, or net – shape process, and whether using carbon or alloy steel, drop forging can meet the diverse needs of modern industries for high – quality, high – strength components.
drop forging process near net shape forging High Carbon Steels

 


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Our Product Range

Comprehensive range of forging products for various industrial sectors

Hot Forging Materials We Use

High-quality steel materials for superior performance and durability

Carbon & Low Alloy Steel

Carbon Steel:
35, 45, CK22N, Q235
Mn Series:
16Mn, 20Mn2, 50Mn
Cr Series:
20Cr, 40Cr

Structural Alloy Steel

Si-Mn:
20SiMn, 37SiMn2MoV
Cr-Mo:
35CrMo, 42CrMo
Cr-Ni-Mo:
34CrNiMo, 40CrNiMo

Specialty Steels

Stainless Steel:
1Cr18Ni9Ti, 1Cr13
Super Alloy:
GH1, GH2, GH3, GH4 Series
Refractory:
F91, F92, 15Cr2MoV

Pressure Vessel Steel

Standard:
09MnNiD, 16MnD
Mo Alloy:
20MnMo, 15CrMo
Certification:
ASME, GB Standards

Nuclear Power Steel

ASTM:
SA-182 Series
Pressure:
SA-266 Series
Grade:
Nuclear Quality

Custom Materials

Composition:
Tailored to Requirements
Testing:
Full Material Analysis
Documentation:
Complete Traceability

Applications of  Hot Forging

Net shape forging is widely used in industries requiring high-strength, precision components with minimal production costs. Below are the key application areas and typical components:

Automotive

  • Connecting rods
  • Crankshafts
  • Gear blanks
  • Steering components
  • Suspension parts

Aerospace

  • Turbine blades
  • Engine brackets
  • Landing gear components
  • Hydraulic fittings
  • Structural forgings

Energy

  • Wind turbine shafts
  • Power generator components
  • Oil & gas valves
  • Pipeline fittings
  • Nuclear reactor parts

Heavy Machinery

  • Excavator bucket teeth
  • Bulldozer linkages
  • Crane hooks
  • Transmission gears
  • Hydraulic cylinder rods

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