PPT-Metallurgy of Coins Suhaylah Ali

Nimmi Bhatt Roman Savinov Engineering 45 Fall 2010 Santa Rosa Junior College Production of Coins Planchet Metallurgy Die Steel Metallurgy Microstructures our experiment Planchet Metallurgy. Pridmore assigned the various marks to particular m ints but his reason for this assignment was somewhat tenuous and needs further exploration However the presence of the secret marks is not di sputed and has led the author of the current work in di 1 Metallurgy Concepts (i) (ii) Minerals and Ores (iii) Occurrence of metals (iv) Processes involved in extraction of metals Introduction Copper and iron were the first metals put to extensive Suhaylah Ali. Nimmi Bhatt. Roman Savinov. Engineering 45. Fall 2010. Santa Rosa Junior College. Production of Coins. Planchet Metallurgy. Die Steel Metallurgy. Microstructures (our experiment). . Planchet Metallurgy. ARAB-SASANIAN COINAGE The earliest coins struck by the Muslims were based on types already in circulation in the lands they conquered. In the former Sasanian empire these were chiefly silver drachms The!Greeks!didn#t!write!a!value!on!their!coins.!Value!was!determined!by!the!material!the!coins!were!made!of!12!chalkoi!!=!1!Obol!!6!obols!=!1!drachm!!100!drachma!=!1!mina!!!!!60!minas!=!1!talentAn!uns Historical Metallurgy Society: Archaeology Datasht No. 5 Downloaded from hist-met.org Page 2furnace pruces vrified claynitugh heavy vitrification isusuay miteto a ze abtheblowing hole and els The Historical Metallurgy Society: Archaeology Datasht No. 1 Downloaded from hist-met.orgMouldsMolten metal was cast, either directinto objects, or into small its.These could be haered topruce This is a modern way of producing metal part to . exact sizes . by blending elements or . metal powders . together. . The powders are then . compacted. (squashed) in a die (like a mould) and heated in a . Outline. Slip Systems. BCC, FCC, HCP. Cross Slip. Partial Dislocations. Stacking Faults. The Thompson Tetrahedron. Fancy Stuff. Frank rule, Frank loop, . Lomer. lock, . Lomer-Cotrell. dislocations, prismatic dislocations. ERQ – 6.3 Explain the Importance of the Discovery of Metallurgy and agriculture . . Use the following questions and documents to write an informative paragraph. An ERQ must be . 5 to 8 sentences per paragraph. Winston Elementary. Quarter. 25 ₵. $0.25. .25 ₵. Dime. 10 ₵. .10. . ₵. $0.10. Nickel. 5. . ₵. $0.05. .05. ₵. Penny. 1 ₵. $0.01. .01. ₵. . What is the value of this collection of coins?. Coins: What’s the point anyway?. ‘Roman coinage’ ancient coins minted under administration, outwardly used for economic function.. In practice, used by the state as a way to facilitate state expenditure, but also to promote the state’s message. . Athens . Naples. Locri Epizephyrii. The Ancient Coin : I. Prior to the modern era coins were struck by hand. Coin dies were made by an artisan called an Engraver and struck by another called a Celator. . EUREKA. 를 통해 지난 . 10. 년간 총 . 16. 개의 . 타이타늄. 관련 연구를 추진하였으며. , . 최근 대규모의 . 분말야금. 클러스터 운영으로 연구투자 집중. (2014~2016) .