铸造第二节100909

1、常用铸造合金常用铸造合金第八章第八章常用铸造合金常用铸造合金第八章第八章常用铸造合金常用铸造合金第八章第八章常用铸造合金常用铸造合金第八章第八章白口铸铁白口铸铁常用铸造合金常用铸造合金第八章第八章麻口铸铁麻口铸铁常用铸造合金常用铸造合金第八章第八章普通灰铸铁普通灰铸铁蠕墨铸铁蠕墨铸铁可锻铸铁可锻铸铁球墨铸铁球墨铸铁未腐蚀未腐蚀常用铸造合金常用铸造合金第八章第八章普通灰铸铁普通灰铸铁常用铸造合金常用铸造合金第八章第八章球墨铸铁球墨铸铁常用铸造合金常用铸造合金第八章第八章常用铸造合金常用铸造合金第八章第八章球狀石墨芯顯微組織英国英国Davy公司公司轧辊组织轧辊组织常用铸造合金常用铸造合金第八章第八

2、章a.片狀石墨芯b.球狀石墨芯顯微組織835345540抗彎強度425235345抗拉強度球芯片芯性能輥徑和輥芯輥身N/mm2機械性能英国英国Davy公司公司轧辊组织轧辊组织常用铸造合金常用铸造合金第八章第八章可锻铸铁可锻铸铁常用铸造合金常用铸造合金第八章第八章（e.g.)常用铸造合金常用铸造合金第八章第八章 灰铸铁的牌号及用途灰铸铁的牌号及用途牌牌 号号用用 途途HT100HT100HT150HT150HT200HT200HT250HT250HT300HT300HT350HT350常用铸造合金常用铸造合金第八章第八章（story)常用铸造合金常用铸造合金第八章第八章球墨铸铁的发明者：球墨铸铁

3、的发明者：Keith Dwight Millis (19151992) was a metallurgical engineer and inventor of ductile iron.Keith Millis grew up in Rensselaer, New York and earned his Bachelor of Science in Metallurgical Engineering as a 1938 graduate of Rensselaer Polytechnic Institute. A year later he was conferred a Master of

4、 Science degree in Metallurgical Engineering at RPI.Early in the Second World War, Chromium was considered critical to the war effort and experimentation was conducted by Millis to find a substitute. He made his discovery while experimenting with molten iron and magnesium. The original intent was to

5、 find another element that would cause all the carbon in the cast iron alloy to be combined as carbide. Magnesium was a known carbide former. Instead, the graphite in the iron formed into spheroidal shapes, and the cast iron had high tensile strength plus it exhibited ductility. Thus was born ductil

6、e iron in 1943.Millis and others at the International Nickel Company (Inco) sought and obtained U.S. patent 2,485,760 in October 25, 1949 for magnesium additions to cast iron that would spheroidize the graphite and dramatically ductilize the material.3As an employee of Inco, Millis worked to promote

7、 the use of ductile iron as it began to be used as a commercial material. He also helped to found the , and organization whose purpose is to promote the production and application of ductile iron castings.Millis died in 1992.Since his death, the Ductile Iron Society has held the “Keith Millis World

8、Symposium on Ductile Iron”, a technical meeting concerning all facets of ductile iron material, processing and applications. The event has been held approximately every 5 years.常用铸造合金常用铸造合金第八章第八章常用铸造合金常用铸造合金第八章第八章球墨铸铁的牌号及用途球墨铸铁的牌号及用途牌牌 号号基基 体体 组组 织织用用 途途QT400-18QT400-18QT400-15QT400-15QT450-10QT450-

9、10QT500-7QT500-7QT600-3QT600-3QT700-2QT700-2QT800-2QT800-2QT900-2QT900-2常用铸造合金常用铸造合金第八章第八章铁素体基体铁素体基体常用铸造合金常用铸造合金第八章第八章 常用铸造合金常用铸造合金第八章第八章常用铸造合金常用铸造合金第八章第八章（back)常用铸造合金常用铸造合金第八章第八章常用铸造合金常用铸造合金第八章第八章3.3.铸铁的熔炼铸铁的熔炼 （化铁）（化铁）（1 1）冲天炉）冲天炉 (Cupola)常用铸造合金常用铸造合金第八章第八章常用铸造合金常用铸造合金第八章第八章常用铸造合金常用铸造合金第八章第八章常用铸造合金常用铸造合金第八章第八章常用铸造合金常用铸造合金第八章第八章常用铸造合金常用铸造合金第八章第八章常用铸造合金常用铸造合金第八章第八章 常用铸造合金常用铸造合金第八章第八章常用铸造合金常用铸造合金第八章第八章常用铸造合金常用铸造合金第八章第八章常用铸造合金常用铸造合金第八章第八章常用铸造合金常用铸造合金第八章第八章牌牌 号号用用 途途ZG200-400ZG200-400ZG230-450ZG230-450ZG270-500ZG270-500ZG310-570ZG310