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What is Forging?

The process of working metal to desired shapes include forging, casting, press working and powder metallurgy.They are the processes of forming anything that supports this civilized society.

Among them, the forging is a process in which metal materials are hammered or pressed into required shapes.
It is able to manufacture products with higher strength (higher toughness) characterized by higher viscosity that causes less impact fracture compared with the two other processes.
While forgings do not greatly attract public attention in daily life, Japanese forgers are at a world-class level in forging technologies and productivity.
It is not too much to say that our very supply of high-quality and low-cost forgings enables forging users to produce world-famous automobiles and construction machines.
We at METALART are proud of being engaged in such “forging” to support the Japanese society.

【Characteristics of Forgings】

  • ・ Higher strength provided by grain flow following product contours
  • ・ Fine structures with no internal defects provided by pressure application
  • ・ Less or even no machining is required.
  • ・ Lighter weight and material saving enabled by making sections thinner without lowering strength.

What is grain flow?

メタルフロー

What symbolizes forging toughness is grain flow in product sections.
As trees put on annual growth rings, forgings retain the grain flow following their contours.This provides high strength, durability and impact values. Forgings, therefore, are used for critical parts of which safety is required.

  Forged Machined from bar stock Cast
Structural shape 鍛造品 鋼材からの削りだし品 鋳造品
Structure Grain flow follows the material contour. Grain flow is cut in the machined portion. No grain flow is retained.
Characteristic Durable in repeated bending stress Undurable in repeated bending stress Undurable in repeated bending stress

Forgings near at hand

Forgings near at hand.Forged luxuries can be seen near at hand.

Forging process

Forgings near at hand.Forged luxuries can be seen near at hand.

Video showing the hot forging

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