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Can you share what makes forged parts better than others? Wouldn’t it simply be better molds or finishing I suppose? I’m only familiar with forged gun parts and

Can you share what makes forged parts better than others? Wouldn’t it simply be better molds or finishing I suppose? I’m only familiar with forged gun parts and even the cheapest forged parts look and function as good as the expensive ones, but then again going bang is easier than keeping people in the air through crazy stresses and heat and cool cycles.

mikewarot 5y ago
Forging orients the grain structure of the metal in a predictable manner. It also helps remove voids. Generally, a forged part is going to be free of the voids and surface defects of a casting, and waste less material than cutting from an rolled or extruded piece of stock.
- post_break 5y ago
  I understand what forging is, I was just asking what made their forging better than others is all.
  - WalterBright 5y ago
    Do you mean why Saginaw is the best? Because Boeing didn't have problems with defective parts coming from Saginaw. The Saginaw people knew what they were doing. Boeing didn't trust anyone else, as these are critical parts. I wish I could have taken one of the jackscrews home and mounted it over the fireplace like some people mount a sword :-)
    - kortilla 5y ago
      Can you extract one from one of the dead 757s in Arizona?
    - Ice_cream_suit 5y ago
      Saginaw is Chinese owned and has a interesting history: "GM in 1999 spun off its parts group as Delphi Automotive including Saginaw Steering. Saginaw Division was renamed Delphi Steering" "With Delphi entering a lengthy bankruptcy proceeding, GM purchased Delphi Steering through their subsidiary, GM Global Steering Holdings LLC, in 2009 and renamed the company, Nexteer Automotive" "Nexteer was acquired by Pacific Century Motors on November 29, 2010" "Originally, Pacific Century was a subsidiary of E-town, the Beijing municipal government's investment company, and Tempo Group, a Chinese car component manufacturer." "In March 2011, AVIC Automobile Industry Holding Co., a Chinese state-owned parts manufacturer, purchased a 51 percent interest in Pacific Century Motors."
- WalterBright 5y ago
  Forgings are 3x stronger than the equivalent casting. I'm not a materials science guy, so my knowledge of the details is a bit vague, but the grain of the metal follows the shape in a forging. When I amped up the horsepower of my Dodge, I replaced the cast bell housing with a forged steel one, because I like my feet. (I've seen pictures of the flywheel coming through the side of a car.) All the spinning parts in the engine were replaced with forged ones, too.

mikewarot 5y ago

Forging orients the grain structure of the metal in a predictable manner. It also helps remove voids. Generally, a forged part is going to be free of the voids and surface defects of a casting, and waste less material than cutting from an rolled or extruded piece of stock.

post_break 5y ago
I understand what forging is, I was just asking what made their forging better than others is all.
- WalterBright 5y ago
  Do you mean why Saginaw is the best? Because Boeing didn't have problems with defective parts coming from Saginaw. The Saginaw people knew what they were doing. Boeing didn't trust anyone else, as these are critical parts. I wish I could have taken one of the jackscrews home and mounted it over the fireplace like some people mount a sword :-)
  - kortilla 5y ago
    Can you extract one from one of the dead 757s in Arizona?
  - Ice_cream_suit 5y ago
    Saginaw is Chinese owned and has a interesting history: "GM in 1999 spun off its parts group as Delphi Automotive including Saginaw Steering. Saginaw Division was renamed Delphi Steering" "With Delphi entering a lengthy bankruptcy proceeding, GM purchased Delphi Steering through their subsidiary, GM Global Steering Holdings LLC, in 2009 and renamed the company, Nexteer Automotive" "Nexteer was acquired by Pacific Century Motors on November 29, 2010" "Originally, Pacific Century was a subsidiary of E-town, the Beijing municipal government's investment company, and Tempo Group, a Chinese car component manufacturer." "In March 2011, AVIC Automobile Industry Holding Co., a Chinese state-owned parts manufacturer, purchased a 51 percent interest in Pacific Century Motors."
WalterBright 5y ago
Forgings are 3x stronger than the equivalent casting. I'm not a materials science guy, so my knowledge of the details is a bit vague, but the grain of the metal follows the shape in a forging. When I amped up the horsepower of my Dodge, I replaced the cast bell housing with a forged steel one, because I like my feet. (I've seen pictures of the flywheel coming through the side of a car.) All the spinning parts in the engine were replaced with forged ones, too.