분말야금의 장단점
장 점
단 점
1) 기계가공을 생략할 수 있다.
2) 제조과정에서 융점까지 온도를 올릴 필 요가 없다.
3) 용해법으로 만들 수 없는 합금의 제조 가 가능
4) 다공질의 금속재료 제조가능
5) 다량생산이 가능
7) 양호한 표면 상태를 얻을 수 있다
8) 형태와 치수가 균일하다
9) 표면
2. 2. Extraction
After the fermentation, the microorganisms(Alcaligenes latus) are filled with PHB in their body. These PHBs have to be separated from microorganisms to make final product. To separate PHBs from biomass, they are extracted from biomass by using solvent. These PHB extracted solvent will experience washing and drying process. After that, PHB can be precipitated as white powder.
process of milk (Up & Midstream.)
Skim milk (milk) puts into dissolution tank and U.H.P(a high temperature sterilizer) then transfer into cultivation tank. It transfers to be homogeneous and remove the microorganism again. then the milk getting a high temperature is cool by freezer.
• material milk
use marketing milk, powdered milk,
If marketing milk, using intact, or removing g
uses a laser as the power source to sinter powdered material (typically metal).
The laser selectively fuses powdered material by scanning cross-sections generated from a 3-D digital description of the part.
After each cross-section is scanned, the powder bed is lowered by one layer thickness, a new layer of material is applied on top, and the process is repeated until the part is completed.