# What is GFM forging?

## What is GFM forging?

The GFM rotary forging machine consists of four rotatable adjustable housings in which eccentric shafts drive the forging hammers at speeds up to 210 strokes min-1. The four-hammer system contains the workpiece on all sides, which eliminates the tensile stresses developed in conventional hot forging.

Radial forging is a process performed with four dies arranged in one plane that can act on a piece simultaneously. This action eliminates the spreading observed in open-die forging and restricts expansion of the material primarily to the axial direction of the bar.

What is GFM used for?

The gram formula mass (GFM) of a substance is known as the mass of one mole. Relative atomic masses of selected elements can be found in the SQA Data Booklet. These can be used to calculate the gram formula mass of a substance.

What is rotary forging?

Rotary forging is a specific cold forging technology which uses incremental steps locally with the material to accurate, precision results. Rotary forging is a combination of two actions, rotational and an axial compression movement, for precise component forming that can be carried out cold or hot.

### How do I calculate my GFM?

The GFM equals the mass in grams of 1 mole of any substance. GFM is calculated by adding the masses of ALL of the atoms in a chemical formula. Round masses from the periodic table to the nearest tenth.

### What is the formula for GFM?

To calculate the gfm of a compound: count the number of atoms/ions of EACH element that is present in one formula unit. Multiply the atomic mass of each element by the TOTAL number of atoms/ions of that element present in the formula. Add all of the masses to obtain the gfm for the compound.

What is the mass of 1 mole of Naoh?

39.997 g/mol
Sodium hydroxide/Molar mass