COMPACT GRAIN FORGING
Nous allons au-delà du traditionnel pour aider les golfeurs à s’améliorer. C’est notre obsession. With Compact Grain Forging™, we continue the trend of going further than anyone else to exceed your expectations. We employ a 2,000-ton forging press to create the optimal grain structure, letting us form each iron blade with masterful precision and deliver consistent performance across the entire set with the best possible feel.
WHAT IS IT?
We use 2 000 tons of forging pressure, which is 2-3 times what’s commonly found in the golf industry. The additional force refines the microstructure and produces a tighter grain arrangement, delivering an iron that approaches theoretical perfection in terms of mass properties. What does that mean to the golfer? A forged iron with enhanced strength, translating to the most solid and consistent feel possible. This six-step process includes a total of five forging strikes, which minimizes the need for hand polishing and creates a repeatable, precise geometry.
2 000 Ton Strikes
2 000 tons of pressure is hard to imagine. To put it in perspective, it’s the equivalent of (give or take):
- 800 SUVs
- 50 Semi Trucks
- 23 Jetliners
Forging pressure directly influences the grain structure and properties of a metal. A heavier tonnage refines the microstructure and strengthens the metal. The differences are illustrated below, with regions of various colors/shades representing constituents of the microstructure. The higher the tonnage, the finer the microstructure and the stronger the metal.
The Six Steps of Compact Grain Forging
At the scorching temp of 1922° F, a block of iron called a billet is bent into an “L” shape. This inconspicuous chunk of raw material will ultimately become a polished work of art.
The initial forging strike creates excess material known as “flash” that envelops the clubhead after this first phase.
The flash is removed prior to the second strike as the iron starts to take shape with visible detail, including the pronounced backbar, Metal T badge and muscle cavity (iron shown is P•7MC).
As the name suggest, this is the first stage of precision craftsmanship. Increased pressure stamps out even greater detail, producing a small amount of flash in the process.
The full strength of a 2,000-ton haymaker hits home at this phase, as the final details begin to emerge. Higher forging pressures allow us to use lower temperatures, giving us more control over the microstructure and minimizing grain growth while precisely controlling the mass of the head when forging in the fine details.
Our fifth and final forging strike locks in the ultimate aesthetics, including the ribbed cavity that accents P•7MC. This fifth stamp, which is one more than most clubmakers use, produces a head shape that’s near done and requires minimal hand polishing for a repeatable, precise geometry.
The Final Result
Pure Performance and the Best Possible Feel