Stamps Mint
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 SPACEASTRONAUTALLEN ANDREW MICHAEL on SHEET STAMPSMINTMintDA10NASA $0.99 (1 Bid) Time Remaining: 1h 54m |
 Concorde Soyuz on Stamps 2 Stamp Mint Sheet M1049 $4.50 Time Remaining: 19h 32m Buy It Now for only: $4.50 |
 RUSSIA 4 SPACE EXPOLATION SOUVENIR SHEETS MINT NEVER HINGED VERY FINE $2.75 Time Remaining: 9h 12m |
 20th ANNIVERSARY FIRST MAN ON MOON BOOKLET 6 STAMPS SOUVENIR SHEET MINT NH $4.99 Time Remaining: 29d 8h 49m Buy It Now for only: $4.99 |
 2008 CHINA SHENZHOU 7 3 MAN SPACECRAFT SET OF 6 POSTCARDS W FOLDER MINT $4.95 Time Remaining: 1d 9h 26m |
 mint stamp 1193 John Glenn astronaut commemorative panel Project Mercury space $0.99 (1 Bid) Time Remaining: 1d 11h 24m |
 US 1969 SPACE MOON LANDING C76 MINT P BLOCK $2.99 Time Remaining: 28d 15h 27m Buy It Now for only: $2.99 |
 BURUNDI SC 126 133 mint light hinged sets Perf and Imperf with souv sheets $5.00 Time Remaining: 1d 14h 59m |
 PANAMA CB4 6 474 474E SPACE NH MINT $0.99 (1 Bid) Time Remaining: 2d 18h 37m |
 Guinea Voyager Spacecrafts Mint Stamp S S 7B 653 $10.00 Time Remaining: 12d 15h 32m Buy It Now for only: $10.00 |
 HAITI 503a 504a C206a C207a SPACE NH MINT $0.99 Time Remaining: 2d 18h 38m |
 Guinea Bissau Space Shuttle Challenger Mint Stamp S S GB11206b $16.45 Time Remaining: 1d 9h 32m Buy It Now for only: $16.45 |
 LOT 180 OLDTIME SPACE HISTORY STAMPS VALUED UNUSED MINT SHEET SOUTH ARABIA MAHRA $9.99 Time Remaining: 2d 22h 51m |
 Group of Mint NH Sports Olympic Stamp Sets $7.50 Time Remaining: 3d 20h 37m |
 St Vincent NASA Turns 50 Space 4 Stamp Mint Sheet SGC1019 $8.10 Time Remaining: 19d 10h 52m Buy It Now for only: $8.10 |
 Hungary Group of Mint NH Space Stamps $4.99 Time Remaining: 3d 20h 37m |
 Ivory Coast 589 Mint NH Space Shuttle Souvenir Sheet $3.99 Time Remaining: 3d 20h 42m |
 UN VIENNA 1992 PLANET EARTH SPACE MINT COMPLETE SET $3.99 Time Remaining: 13d 12h 15m Buy It Now for only: $3.99 |
 Albania 786 Perforated Solar System Mint NH S Sheet $14.99 Time Remaining: 3d 20h 43m |
 Guinea Total Solar Eclipse Mint Stamp S S 7B 842 $10.50 Time Remaining: 19d 12h 52m Buy It Now for only: $10.50 |
 Chile 269 Philatelic Expo Show Sheet Mint NH $3.99 Time Remaining: 3d 21h 48m |
 LOT 180 OLDTIME SPACE HISTORY STAMPS VALUED UNUSED MINT SHEET SOUTH ARABIA MAHRA $9.99 Time Remaining: 3d 22h 21m |
 Djibouti Astronauts 2 Stamp Mint Sheet SV0804 $3.50 Time Remaining: 9d 19h 52m Buy It Now for only: $3.50 |
 SPACEASTRONAUTARMSTRONG NEIL ALDEN on SHEET STAMPSMINTMintDA9NASA $0.99 Time Remaining: 4d 7m |
 SPACEASTRONAUTACABA JOSEPH MICHAEL on SHEET STAMPSMINTMintDA12NASA $0.99 Time Remaining: 4d 7m |
 Mali Space Shuttle Challenger Mint Stamp S S 13H 172 $6.65 Time Remaining: 10d 8h 27m Buy It Now for only: $6.65 |
 SPACEASTRONAUTALDRIN EDWIN EUGENE on SHEET STAMPSMINTMintDA11NASA $0.99 Time Remaining: 4d 10m |
 SPACE Moon Earth Spaceship Mint NH Sheet of 20 Arabia $1.25 Time Remaining: 4d 12h 18m |
 US 1962 SPACE MERCURY PROJECT MINT BLOCK OF 4 $1.00 Time Remaining: 14d 18h 17m Buy It Now for only: $1.00 |
 RUSSIA Mint NH Sc 4837 SPACE Russia Hungary sheet of 15 $4.00 Time Remaining: 4d 12h 41m |
 Guinea Voyager Spacecrafts 6 Stamp Mint Sheet 7B 651 $11.00 Time Remaining: 12d 15h 32m Buy It Now for only: $11.00 |
 RUSSIA Mint NH Mi 5057 SPACE Gagarin Sheet of 15 +Coupons $5.00 Time Remaining: 4d 12h 47m |
 RUSSIA Mint NH Mi 4463 SPACE Salyut 6 Soyuz sheet of 15 $5.00 Time Remaining: 4d 12h 51m |
 St Vincent NASA Space 4 Stamp Mint Sheet SGC1018 $8.10 Time Remaining: 17d 19h 12m Buy It Now for only: $8.10 |
 RUSSIA Mint NH Mi 5056 SPACE GAGARIN Sheet of 15 +Coupons $5.00 Time Remaining: 4d 13h |
 RUSSIA 1963 Mint NH SPACE Mi 2852 2857 SHEET CV5000Eu $24.99 Time Remaining: 4d 13h 53m |
 RUSSIA 1983 WCY TRAIN SPACE SOUVENIR SHEET MINT CPL $1.65 Time Remaining: 21d 15h 56m Buy It Now for only: $1.65 |
 Rwanda 951 7 1979 Apollo XI Space Issue Mint NH $5.99 Time Remaining: 4d 20h 6m |
 Mozambique Space Yuri Gagarin Mint Stamp Souvenir Sheet 13A 533 $12.35 Time Remaining: 13d 21h 17m Buy It Now for only: $12.35 |
 Algeria 857 Telecommunications Deluxe Card Mint NH $9.99 Time Remaining: 4d 20h 9m |
 Djibouti C155 7 Mint NH Imperf 1982 Space Set $3.00 Time Remaining: 4d 20h 9m |
 MONGOLIA 1973 WEATHER SATELLITE SPACE ISSUE MINT CPL $1.65 Time Remaining: 9d 14h 29m Buy It Now for only: $1.65 |
 Dubai Mi 71B 78B Mint NH Imperf Space Set $5.99 Time Remaining: 4d 20h 10m |
 Mali C440 Space Shuttle Mint NH Souvenir Sheet $3.99 Time Remaining: 4d 20h 23m |
 Mozambique Mir Space Station 6 Stamp Mint Sheet 13A 641 $15.65 Time Remaining: 28d 12h 38m Buy It Now for only: $15.65 |
 Central Africa C138 Imperf Apollo Soyuz S S Mint NH $5.99 Time Remaining: 4d 20h 23m |
 Guinea Space Tourism 6 Stamp Mint Sheet MNH 7B 1162 $11.85 Time Remaining: 20d 9h 12m Buy It Now for only: $11.85 |
 Cuba Mi Block 94 Tsiolkovski Space Mint NH $3.99 Time Remaining: 4d 21h 7m |
 Manama Mi block 37 Apollo 11 Souvenir Sheet Mint NH $3.99 Time Remaining: 4d 21h 7m |
 St Thomas Asian Astronauts 2 S S Mint Set ST9509d $8.50 Time Remaining: 12d 11h 52m Buy It Now for only: $8.50 |
 Halleys Comet Fleetwood Stamp sheet Set Album Mint Collection World $29.99 Time Remaining: 4d 22h 45m |
 Albania 1964 SC740 44 Complete set of 2 Miniature Sheets + 8 sellos MINT $24.99 Time Remaining: 5d 9h 59m |
 Guinea Pascal Space Mint Stamp S S MNH 7B 1064 $10.75 Time Remaining: 14d 18h 52m Buy It Now for only: $10.75 |
 Hungary 1961 Set SC1381 82 PERF and IMPERF UNUSED MINT $39.99 Time Remaining: 5d 9h 59m |
 Monaco 1956 Complete Set SC371 90 C49 50 UNUSED MINT $49.99 Time Remaining: 5d 10h |
 Mozambique Space Missions 6 Stamp Mint Sheet 13A 711 $14.90 Time Remaining: 27d 15h 12m Buy It Now for only: $14.90 |
 Ghana 1964 SC164 66a Complete set of 6 stamps + Souvenir Sheet Unused MINT $18.99 Time Remaining: 5d 10h |
 Mozambique Space Missions Mint Stamp S S 13A 543 $12.75 Time Remaining: 26d 10h 32m Buy It Now for only: $12.75 |
 Hungary 1964 SCB242a + SCB242b Perf and Imperf Unused MINT $39.99 Time Remaining: 5d 10h 5m |
 French Polynesia 1965 ITU Issue SCC33 UNUSED MINT $53.99 Time Remaining: 5d 10h 5m |
 RUSSIA 1983 SPACE COSMONAUTS DAY MINT S SHEET $1.99 Time Remaining: 21d 19h 39m Buy It Now for only: $1.99 |
 Albania 1963 Space Complete Set Perf and Imperf SC680 85 UNUSED MINT $24.99 Time Remaining: 5d 10h 16m |
 Jordan 1966 SC532 E Perf and Imperf UNUSED MINT $22.99 Time Remaining: 5d 10h 16m |
 Guinea Bissau Gagarin Space Mint Stamp S S GB11306b $13.45 Time Remaining: 25d 8h 27m Buy It Now for only: $13.45 |
 Dubai 1964 ASTRO SCC28 35 S S Imperforated Set Unused MINT $24.99 Time Remaining: 5d 10h 16m |
 Guinea Pascal Space 5 Stamp Mint Sheet 7B 1063 $13.70 Time Remaining: 17d 11h 52m Buy It Now for only: $13.70 |
 Paraguay 1967 Kennedy Astro SC1041 49 SS1050 + Imperforated S S Unused MINT $24.99 Time Remaining: 5d 10h 16m |
 GUINEA 1974 Stamps UPU SPACE Spain GOLD MINT NH $0.99 Time Remaining: 5d 10h 19m |
 RUSSIA 1976 SPACE INTERCOSMOS MINT SET OF 5 $1.99 Time Remaining: 23d 20h 56m Buy It Now for only: $1.99 |
 Albania 1962 SPACE Complete Set + Imperf + Two SS MINT NH SC621 24 $124.99 Time Remaining: 5d 10h 23m |
 Paraguay 1965 JF Kennedy Space Perf + Imperf Set + Two SS MINT SC887 94 $54.99 Time Remaining: 5d 10h 27m |
 Space Astronauts Mint Sheet of 6 MNH 7518 $3.50 Time Remaining: 11d 20h 53m Buy It Now for only: $3.50 |
 Paraguay 1966 SPACE SC966a S S + Imperforated S S Unused MINT Never Hinged $19.99 Time Remaining: 5d 10h 32m |
 Liberia Constellations 3 Stamp Mint Sheet LIB1045 $8.65 Time Remaining: 2d 8h 52m Buy It Now for only: $8.65 |
 Hungary 1961 VENUS 2 S S Perf Imperf MNH SC1388 Unused MINT $49.99 Time Remaining: 5d 10h 33m |
 BURUNDI SCOTT 477 478 C216 C217 MINT VF NH BLKS 4 SPACE $3.99 Time Remaining: 5d 13h 15m |
 Guinea Space Supernova SNR G19+03 6 Stamp Mint Sheet 7B 920 $12.10 Time Remaining: 20d 11h 52m Buy It Now for only: $12.10 |
 SPACE ACHIEVEMENT 8 MINT STAMPS 1981 W COLLECTORS BOOKLET $5.00 Time Remaining: 5d 14h 20m |
 Guinea Mi 4049a 56a 2003 Space S Sheets Mint NH $89.99 Time Remaining: 5d 18h 53m |
 Guyana Japan Space Probes 4 Stamp Mint Sheet GUY1032 $9.50 Time Remaining: 23d 10h 12m Buy It Now for only: $9.50 |
 ADEN Mahra 1967 ROCKETS and SPACE 240 Sets Mint NH 58 66A Value 180000 $150.00 Time Remaining: 5d 19h 49m |
 Albania 680 5 1963 Conquest of Space Set Mint NH $8.50 Time Remaining: 5d 20h 1m |
 St Vincent Sputnik III 6 Stamp Mint Sheet SGU0904 $10.25 Time Remaining: 29d 9h 32m Buy It Now for only: $10.25 |
 Somalia 2000 Space Souvenir Sheet Mint NH $8.99 Time Remaining: 5d 20h 7m |
 U S 1971 SPACE APOLLO SC 1434 35 MINT MAIL EARLY BLOCK $1.99 Time Remaining: 7d 21h 45m Buy It Now for only: $1.99 |
 Cambodia 705 11 1986 Halleys Comet Space Set Mint NH $3.00 Time Remaining: 5d 21h |
 Cambodia 1099 1106 1990 Space Day Set S S Mint NH $4.99 Time Remaining: 5d 21h 1m |
 Guinea Challenger Space Catastrophe 6 Stamp Mint Sheet 7B 1616 $17.00 Time Remaining: 20d 20h 22m Buy It Now for only: $17.00 |
 Ras al Khaima Mi 702 6 Apolla XIV Issue Mint NH $3.99 Time Remaining: 5d 21h 14m |
 Yemen Kingdom Mi 781 4 Apollo Space Set Mint NH $3.99 Time Remaining: 5d 21h 14m |
 Guinea Comet Hale Bopp Mint Stamp S S MNH 7B 665 $9.50 Time Remaining: 24d 20h 52m Buy It Now for only: $9.50 |
 Liberia 549 54 C193 Imperf Apollo Group Mint NH $19.99 Time Remaining: 5d 21h 16m |
 Guinea Hubble Space Mint Stamp Souvenir Sheet 7B 1215 $12.50 Time Remaining: 7d 8h 52m Buy It Now for only: $12.50 |
 Guinea 677 1974 Satellite Space S Sheet Mint NH $4.99 Time Remaining: 5d 21h 18m |
 Guinea 1492 Astronauts Space Sheetlet Mint NH $14.99 Time Remaining: 5d 21h 18m |
 St Thomas Space Concorde Mint Stamp Souvenir Sheet ST9323b $12.10 Time Remaining: 9d 14h 47m Buy It Now for only: $12.10 |
 Ecuador 1967 SC764 E S S SC764F S S SC764G Unused MINT $14.99 Time Remaining: 5d 10h 24m |
 BhutanSpaceApollo 11Mint never hinged S S Hologram $9.99 Time Remaining: 2d 15h 16m |
 Eq GUINEA 1978 SPACE ASTRONAUTS MINT IMPERF SHEET OF 8 $2.99 Time Remaining: 23d 20h 27m Buy It Now for only: $2.99 |
 BhutanSpaceNeil ArmstrongAir MailMint never hinged S S Look $9.99 Time Remaining: 2d 15h 20m |
Stamps Mint
From Fine Metal Stamping to Olympic Medal Winning
With the Vancouver 2010 Winter Olympics metal stamping well underway, newsrooms around the globe follow a rising medals count. The elite athletes participating in the games and their eager nations watching from afar hope for the fulfillment of the ultimate Olympic dream, standing atop the podium as a gold, silver or bronze medal is draped around their neck.
For many of the more than 5,500 Olympians representing more than 80 nations, receiving a medal will remain a dream, an ambition for future feats of athleticism perhaps. For a select 615 individuals, however, that dream will become a realization. 615 is the exact number of medallions created at The Royal Canadian Mint for the XXI Olympic Winter Games. Each of these was produced through unique metal stamping processes creating one of a kind medals for each athlete's one of a kind moment.
Photo courtesy of Micro Forms, Inc.
The International Olympic Committee imposes strict regulations on the creation of Olympic medals. The size, weight, composition and inscription of each gold, silver or bronze piece must meet the highest of standards. The 30-step process resulting in medals of such caliber begins with sheet metal stamping, the same process used to mint coins. Using pre-formed sheets, which may be inspected in advance, ensures that each piece adheres to predetermined parameters.
Sheets of pure silver are used to create both the silver and gold medals, the latter of which is later plated with at least 6grams of gold. The Bronze medals are stamped from sheets of alloyed copper. The 6mm thick metal of either composition is fed through a machine which stamps out blanks, or medallions lacking inscription. The blanks for each medal must be 100mm in diameter. Precision metal stamping is then used to impress the lettering and imagery onto each medal.
Photo courtesy of American Industrial Company.
The specific design and inscription of an Olympic medal varies each year. Several committees must agree upon a design and production scheme for the medals before shortrun stamping begins. Shortrun stamping allows for the creation of a limited number of medals in a narrow period of time. For most Olympics, this is the final step in creating the finished and inscribed medals. The Vancouver design committee, however, has added a hand stamping process. Each piece is struck by hand a total of nine times to create an undulating wave in the medallion. This is meant to symbolize the ocean waves, snow drifts and mountains of the host country. In striking the metals by hand, designers and artists create personalized the medals.
Gold medal from the Vancouver 2010 Winter Olympics.
The final product of the metal stamping process is a unique memento and sign of achievement for the receiving athlete. While the recipient of an Olympic medal might know little of the manufacturing technique behind its creation, each is no doubt keenly aware of the importance of that process. The Olympic medal is more than just a slab of stamped metal. It embodies the aspirations of all competitive athletes. It is a specially designed, carefully crafted and beautifully orchestrated work of art.
Magnesium is the lightest structural material offering very good damping characteristics, weldability and excellent shielding against electro-magnetic interferance, and is unlimited in supply. It has been an excellent material for making portable electronic and telecommunication devices, and automotive and aerospace equipment such as MD player casings, chassis for cell phones, video cameras and notebook computers, automotive gear housings, car wheels and engine blocks.
The most common methods to produce magnesium parts are die casting and thixomolding processes. However, these runner and gating processes provide a low material yield of only 30% for thin-wall casting and can only produce thin walls of between 0.7mm to 1.2mm.
If we can form magnesium parts from sheet metal just like metal stamping of steel and aluminum parts, we can achieve better material yield of about 80% and possibly safer operation due to the lower processing temperature. However, magnesium is known to be non-formable as it is very resistant to deformation due to its hexagonal close-packed structure. The only way is warm forming of magnesium as deformation of magnesium above 225 degrees Celsius will cause additional slip planes to become operative.
Extensive process research in this area have resulted in a few warm forming hydraulic presses available in the market for draw forming. Recently, research in warm draw forming of magnesium to make cell phone chassis has successfully shown that 0.4mm thin walls can be achieved consistently. Metallographic tests of the chassis have also demonstrated that there is zero porosity and increased rigidity.
While the current warm forming press systems are complicated to operate as they require the preliminary building of stroke and force profiles for the specific products using data acquisition modules and forming simulation softwares, the increased replacement of aluminum and plastics with magnesium for handheld electronic devices may well accelerate this process. Progressive early adopters of this technology would have a first mover advantage in the competitive global manufacturing industry.
Author Ken Yap is a director of Suwa Precision Engineering Pte Ltd in Singapore and represents metal stamping, precision machining, miniature precision balls and PCB manufacturers from Suwa, also called "The Oriental Switzerland" in Japan due to its Swiss resemblance for rich watch-making industry, its mountainous terrain and its precision component making industry. He is also a director of Attisse Pte Ltd, a business consultancy and research consultancy firm for Japanese investors, and SV Tech Pte Ltd which is engaged in sourcing of PCB, IC chips and semiconductor related products from China.
About the Author
xlnb.cn is a Manufacturer and suppliers of shower drain, sheet metal stamping, metal stamping, Equipment parts by OEM/ODM service with diversified schemes.
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