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Open die forgings produced at the Tianhao forging shop
Forged Steel Components

Open Die Forgings

Rings discs blocks and shafts forged in carbon alloy tool and stainless steels

Product Overview

What Open Die Forgings Is and Who It Is For

Open die forging is the base process behind most of what Shandong Tianhao Precise Engineering supplies: rings and open die forgings for gears, trunnions and pinions, forged rings, contoured rings, discs and blocks. Because the same order also covers heat treatment, machining and fabrication, the part leaves as a finished component rather than as a forging that still needs three more suppliers.

Key Benefits

  • Forging, heat treatment, machining and fabrication handled under one order
  • Grain flow follows the part shape, which a cut-from-plate blank cannot give
  • Metallurgical staff develop customised alloys where a standard grade will not do
  • Large components accepted, including work for the 5-axis machining centre
Open die forgings produced at the Tianhao forging shop
Specifications as stated in our process data
Alloy steels4140, 4150, 4330, 4330V, 4340, 1045, 1080
Pressure gradesASTM A350 Grade LF2, ASTM A350 Grade LF6
Stainless304 and 316
Aluminium6061, 7050, 7075
MachiningCNC machining centre with 5-axis machine for big components

Who It Is For

  • Industrial machinery builders replacing fabricated blanks
  • Transmission makers buying gear and pinion blanks
  • Tool and die shops ordering blocks and rolled rings

Problems It Solves

  • Plate cut blanks have no grain flow and fail earlier under fatigue
  • Coordinating forge, heat treatment and machine shops costs weeks of lead time
  • Standard grades sometimes cannot meet the property requirement

Technical Features

  • Carbon and low alloy steels, tool steels, medium alloy steels, aluminium, titanium, stainless steels and superalloys
  • Customised alloy development with our metallurgical staff
  • Heat treatment, machining, fabrication and testing as value added services
  • 5-axis CNC machining capability for large parts
Application Scenarios

Where Open Die Forgings Is Used

Rings and open die forgings for gears, trunnions and pinions

Rings and open die forgings for gears, trunnions and pinions

Forged rings, contoured rings and discs for handling equipment

Forged rings, contoured rings and discs for handling equipment

Rolled rings and blocks for tooling purposes

Rolled rings and blocks for tooling purposes

Support rings and bearing blanks for excavators

Support rings and bearing blanks for excavators

Materials

  • Carbon steel
  • Low alloy steel
  • Medium alloy steel
  • Tool steel
  • Stainless steel
  • Aluminium
  • Titanium
  • Superalloys

Quality Control

  • Testing supplied as part of the value added service package
  • Dimensions verified after heat treatment and again after machining
  • Material certification against the ordered grade

Customization Options

  • Part geometry to drawing
  • Grade selection including customised alloy development
  • Delivery condition from as forged through to finish machined
  • Fabrication and assembly work added to the order
Manufacturing Process

How We Make It

Drawing

Drawing and material review

Open die forging

Heat treatment

Rough

Rough and finish machining

Fabrication

Fabrication where required

Testing

Comparison

How It Compares

Open die forging suits one-off and medium volume parts and very large sections. Closed die forging becomes the better route once volumes justify the die cost and the shape repeats.

Use Guide

  • Send the finished part drawing and say which condition you want delivered
  • State the required mechanical properties, not only the grade name
  • Tell us the machining you plan to do yourself so the allowance is right
FAQ

Questions Buyers Ask About Open Die Forgings

Do you supply forgings rough or finish machined?

Either. Forging, heat treatment, machining and fabrication are all available on the same order.

Can you develop a grade for a specific requirement?

Yes, our metallurgical experts partner with customers to provide customised alloy developments.

How large a component can you machine?

Our CNC machining centre has a 5-axis machine and can manufacture big components.

Get a Quote for Open Die Forgings

Send the drawing, the quantity and the delivery condition you need. We reply with price, lead time and a sample plan.