China Drying Technology Co., Ltd.'s “863†Program Office of Ocean Technology recently organized a review and acceptance meeting for key projects for marine biology in the “11th Five-Year Plan†in Beijing. Acceptance of 9 projects including new marine biological product research and development will be accepted. Among them, the new marine biological product research and development project has developed production techniques such as efficient preparation of alginate oligosaccharides and high-activity chitosan, built a 10,000-ton marine biopesticide production line, and successfully developed plant hollow capsules using seaweed polysaccharide as the main raw material. Obtained the production approval issued by the State Food and Drug Administration (SFDA); developed three medical hemostatic products using marine functional chitosan as raw materials. The Key Technology Research Project of Marine Biological Function Gene Engineering Products has developed pilot scale preparation technologies for more than 10 marine genetic engineering products such as sea anemone cardiac peptides and low temperature lipase, and has basically completed three genetic engineering projects such as recombinant shark liver stimulant analogues. Product preclinical drug product evaluation study. Through the implementation of key technology projects for the development of deep-sea extremophiles and their gene resources, the initial enrichment of deep-sea planktonic micro-organisms has been completed. A laboratory high-pressure cultivation system has been developed and a number of valuable extremophilic enzymes and polysaccharide resources have been established. A set of research methods for deep-sea unculturated microbial environment genomes. The remaining six projects are the development of salt-tolerant plants for marine tidal flats, new marine aquatic product processing technologies, research and development of anti-tumor marine drugs, marine microbiological product pilot studies, anti-cardiovascular and cerebrovascular systems, marine drug research and development, and anti-neurological diseases marine drugs. research and develop.
Aluminum gravity casting Introduction:
The gravity casting means the part is injected
by the earth's gravity. The generalized gravity casting includes sand casting,
Metal mold casting (permanent mould casting), investment casting, Lost Foam
Casting, Mud casting etc. The narrow meaning of gravity casting is metal mold
casting (permanent mould casting).
The permanent mold casting is modern
technology that the mould made by heat resistant alloy steel.
The metal liquid generally injected into the
gate by manual. Full of cavity depend on weight of liquid metal, exhaust, cool,
open mould and get products.
Process flow: smelting, filling cavity,
exhaust, cool, open mould, heat treatment, downstream processing.
The characteristics of the aluminum gravity
casting:
1. Less casting porosity, heat treatment can
be performed. The strength of the product can be improved greatly after heat
treatment, better than Die Casting Parts.
2. Product density is low, molding depend on
the liquid weight, the density of the product is lower than die casting parts,
its strength is slightly worse, but the elongation is higher.
3. The product surface finish is not high. Easy
form similar blasting pit on the surface of casting products after cooling
contraction.
4. Slow filling and low production efficiency,
the production efficiency is only about a quarter compare the high pressure
casting, caused the product cost is high.
5. Mould life is longer than die casting
mould, and mould cost is low also.
6. Process is relatively simple.
7. Not suitable for production of thin wall
parts.
The aluminum gravity casting conventional materials
Production and QC control of aluminum gravity casting
Aluminium Gravity Casting, Aluminum Gravity Casting Part, Aluminum Permanent Mould Casting, A356 Gravity Casting Part, Aluminum Low Pressure Casting Part, Aluminum Permanent Mold casting Part NINGBO BEILUN LEMA MACHINERY TECHNOLOGY CO.,LTD , http://www.china-lema.com
