How to build a 50k ton forging press

Modern presses and logistics

• Commenters link Tesla’s Giga Press as a “modern parallel,” but others stress it is not equivalent to a 50,000‑ton forging press (different process, scale, and materials).
• Discussion of post‑WWII dismantling of German presses highlights how hard it would be to disassemble, ship, and re‑assemble such equipment, especially if manuals or experts were lost in war.

Casting, forging, machining, and materials

• Casting is not inherently “low quality”; it has different trade‑offs: brittle, uneven microstructure, thermal‑shrinkage and precision issues, but enables complex shapes and efficient material use.
• Many parts are cast roughly to shape, then machined on critical surfaces; machining alone can be wasteful for complex geometry.
• “Cast iron” is a family of high‑carbon irons with graphite phases; properties depend heavily on alloy and treatment (e.g., ductile iron via Mg/Ce additions).
• Forging improves properties by deforming grains and can align them along stress paths; examples include connecting rods and wrenches.

Grain flow and strength: contested

• Several comments extol tailored grain direction and work hardening (e.g., wire drawing, forged I‑beams), claiming large strength/fatigue gains.
• Others with design experience say in many alloys and real designs, directional strength differences are modest, often overshadowed by manufacturing cost and later heat treatment that resets grains.
• Cited aerospace data show strong anisotropy for some extruded alloys but not others; consensus: effect is real, but highly alloy‑ and process‑dependent.

Extreme forming and joining techniques

• Explosive forming and explosion bonding are discussed as “press equivalents” for large or exotic parts (boat hulls, heat‑exchanger plates, bimetallic tube sheets).
• Welding very thick plate requires extensive beveling and many passes; alternatives include forge welding, hot riveting, and explosion welding.
• Electron‑beam welding in vacuum is highlighted as an advanced, high‑end production process, including for large nuclear components.

Nuclear vessels and strategic heavy presses

• North America lacks presses to make one‑piece PWR reactor vessels; current practice requires multi‑piece shells and critical welds, though new EB techniques may reduce schedule and anxiety over weld quality.
• Several commenters frame heavy presses as strategic assets akin to nuclear or aerospace infrastructure, lamenting missed investments (e.g., UK heavy press for reactors) and linking to broader debates about deindustrialization, CHIPS‑style subsidies, and whether markets alone would ever build such capability.