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Early 20th Century

1906
First electric arc furnace is used in the U.S. at Holcomb Steel Co. in Syracuse, NY.

1913 First true stainless steel melted by Harry Brearley in Sheffield, England.

1913 Crucible Steel Casting Co.'s Lansdown, PA plant installs the first low-frequency electric furnace for special melting.

1923 Formation of the International Committee of Foundry Technical Associations in Zurich, Switzerland.

1924 Dr. W.H. Hatfield invents 18/8 stainless steel (18% chromium, 8% nickel).

1930s University of Michigan professors pioneer Spectrography for metal analysis.

1930 First high-frequency coreless electric induction furnace in the U.S. is installed in the Lebanon Steel Foundry in Lebanon, PA.

1940 Wood flour is introduced into foundry practice as a sand additive.

1947 The Shell process, invented by J. Croning of Germany during WWII, is discovered by U.S. officials and made public.

1948 Development of ductile iron, a cast iron with a fully spheriodal graphite structure.

1949 U.S. patent granted to K.D. Millis, A.P. Gagnebin and N.B. Pilling of International Nickel Company for developing ductile iron.

1953 The Hotbox system of making and curing cores in one operation is developed, eliminating the need for dielectric drying ovens.

1958 H.F. Shroyer is granted a patent for the full mold process, the forerunner of the expendable pattern (lost foam) casting process.

1960s Compactibility and methylene blue clay tests are developed for green sand control. Also developed at this time are high-pressure molding processes and fast-setting nobake binders for sand.

1964 The first Disamatic molding machine is introduced.

1965 The Scanning Electron Microscope is invented by the Cambridge University Engineering Department in England.

1965 Cast metal matrix composites are first poured at International Nickel Company in Sterling Forest, NY, by Pradeep Rohatgi.

1968 The Coldbox process is introduced by L. Toriello and J. Robins for high production core making.
 





 
 
History