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Hot Forging Bolts

At Valley Forge, we have the capability to hot forge diameters ranging from ½” to 4″, or 13mm to 101mm. From standard hex bolts to fully customized special shaped heads, we have the ability to forge thousands of sizes and shapes with outstanding precision, largely in thanks to our in-house tooling department.

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Hot Metal Forging has evolved over centuries from the ancient blacksmith with a hammer and anvil, into a modern engineered process that uses sophisticated production equipment.

Using great pressure, metal is pressed, pounded, or squeezed into high strength parts known as forgings. Hot forged components and parts can vary in size, shape, and sophistication. Anything from a hammer and wrench to components in a NASA space shuttle.

 

Hot Forging is able to produce heading bolts and other fasteners that are much stronger than an equivalent cast or machined part. It is for this reason that forgings are often used where reliability and human safety are critical.

The way in which the piece of metal becomes stronger through hot forging is by how it is shaped. When the piece of metal is being shaped into a new form, its initial integral grain is deformed to fit the new general shape. As a result, the grain is continuous throughout the part, producing a piece with improved strength characteristics.

 

 

 

OUR HOT FORGING MACHINES

The sophisticated equipment used to make hot forged parts has widely varying styles and drive systems. However, they fall into four main categories: hot forging presses, hammers, upsetters, and ring rollers.

Hammers have a driving force of up to 50,000 pounds and use that force to pound the metal into the desired shape with controlled high pressure impact blows.

Hot Forging Presses have a driving force of up to 50,000 tons and use that force, in a controlled high pressure environment, to squeeze the metal into the needed shape vertically. Upsetters are basically hot forging presses used horizontally. Ring rollers turn a hollow round piece of metal under extreme pressure against a rotating roll, thereby squeezing out a one piece ring without requiring any welding.

  • 3″ Ajax Upsetter
  • 3″ Acme Upsetter
  • 3″ National Upsetter
  • 2″ Hill Acme Upsetter
  • 1 ½” National Upsetter
  • Sutherland 660 Vertical Press
  • Bliss 308 Punch Press
  • National Maxi-Press
  • Bliss 21½M Punch Press
  • Niagara A52 Punch Press
  • Ferracute Punch Press
  • 1 ½” National Upsetter