3D or material additive manufacturing 没你们PE认为的那么神奇 ：）
1. Currently, 3D printing is good for for fast prototyping, saving tooling cost,
2. For serious structural parts, for high-speed rotational speed -- no commericial use.
3. Metal 3D printing has a lot of issues to solve.
What you put out as "proof" was like -- early phase work, NASA readiness level 3, 5 at best.
Spending $1B, saved $70K :-- ) and still not fully proved.
For printing kitech tools, toys, 3D printer could be perfect :), BUT too expensive to be commercial viable??
For militatry use- weapons, 3D manufacturing/printing maybe ok, because the life time is a few minutes max, and cost is not an issue -- heard about $1000 coffee mug, correct?
For commericial use -- like a jet engine/gas turbine power system, life requirement for system could be 40K - 80 K hours, which is continuously running (24 x 7) for 5 years-10 years; life of components would be ~ 20K hours.
You really think the current 3D printer will generate that kind of parts -- precision/tolerance, heat treatment, etc..
Those are like joke -- haha. GE9X has several parts 3D print
Additive manufacturing part of the Boeing 777X’s production process
The Boeing 777X was produced in collaboration with GE, which leveraged several of its advanced manufacturing technologies, including additive manufacturing with its laser powder bed fusion machines. The GE9X engines are particularly interesting because they integrate several 3D printed components. For example, the fan blades and their enclosure were made from carbon fibre composites, reducing their weight and the number of blades from 22 to 16. Another example is the 3D printed metal fuel nozzles, which reduce fuel emissions and thus lower costs. The engines are impressive in size, with a fan diameter of 3.4 metres!
Metal 3D Printing a 48 Blade Turbine Part out of 316L Stainless
别人家的娃想学什么，别人娃的爹妈操心就够了，无论小中，小白和小黑，无需统一认识。LOL
但最近这两个谈机械工程和制造业的就显得有些勉强。
还是多谈谈金融投行吧
不是 R&D, or Manufacturing Engineering, Responsible for P&L 级别的。
后边其他欧盟国家，东盟国家都在准备吃剩下的。
请问美国制造业的海外竞争力在哪里？
军工出口向来是美国强项。这是霸权地位决定了的垄断。没什么过去现在之分。200b绝大部分是垄断利润，就是说20-50b的货卖出了天价，不是制造力雄厚的证据。
即便是军工，美国军方自己都承认制造业的下滑严重影响了军队装备更新换代的速度和质量。尤其是大型海军陆军装备的制造能力。简单到155mm炮弹扩大产量都那么困难，说明了什么。
1. Currently, 3D printing is good for for fast prototyping, saving tooling cost,
2. For serious structural parts, for high-speed rotational speed -- no commericial use.
3. Metal 3D printing has a lot of issues to solve.
What you put out as "proof" was like -- early phase work, NASA readiness level 3, 5 at best.
Spending $1B, saved $70K :-- ) and still not fully proved.
For printing kitech tools, toys, 3D printer could be perfect :), BUT too expensive to be commercial viable??
For militatry use- weapons, 3D manufacturing/printing maybe ok, because the life time is a few minutes max, and cost is not an issue -- heard about $1000 coffee mug, correct?
For commericial use -- like a jet engine/gas turbine power system, life requirement for system could be 40K - 80 K hours, which is continuously running (24 x 7) for 5 years-10 years; life of components would be ~ 20K hours.
You really think the current 3D printer will generate that kind of parts -- precision/tolerance, heat treatment, etc..
3D printers & raw material supplies？
....
https://www.3dnatives.com/en/boeing-777x-300-3d-printed-parts-290120205/
军工靠的就是霸权垄断。没有了垄断，现在一样的没有海外竞争力。造个军舰飞机自己军队都买不起 LOL
不要再提3D打印了，这个东西美国并没有什么不得了所以没有什么竞争优势，上头已经说过了。
Additive manufacturing part of the Boeing 777X’s production process
The Boeing 777X was produced in collaboration with GE, which leveraged several of its advanced manufacturing technologies, including additive manufacturing with its laser powder bed fusion machines. The GE9X engines are particularly interesting because they integrate several 3D printed components. For example, the fan blades and their enclosure were made from carbon fibre composites, reducing their weight and the number of blades from 22 to 16. Another example is the 3D printed metal fuel nozzles, which reduce fuel emissions and thus lower costs. The engines are impressive in size, with a fan diameter of 3.4 metres!
This article claims 3D printed fuel nozzle helps to reduce emissions :) 哈哈哈， what a joke.
Ask Parker Haniffin fuel system engineers or GEAE combustion chief engineer if that makes sense or not.
不过，所举的例子其实不合适。
用 Investment Casting 更好。