JOHN E DUGAN
Vehicle Board in Pittsburgh, PA
License number
Pennsylvania MV000457L
Category
Vehicle Board
Type
Vehicle Salesperson
Address
Address
Pittsburgh, PA 15201
Personal information
See more information about JOHN E DUGAN at radaris.comName
Address
Phone
49 Forest Rd, Springfield, PA 19064
506 Dugan Rd, Muncy, PA 17756
502 George St, Scottdale, PA 15683
4548 Penn Ave, Pittsburgh, PA 15224
589 Wigard Ave, Philadelphia, PA 19128
Professional information
See more information about JOHN E DUGAN at trustoria.com
Method Of And Apparatus For Making Compound Rolls
Method Of And Apparatus For Making Compound Rolls
US Patent:
3972366, Aug 3, 1976
Filed:
Nov 29, 1974
Appl. No.:
5/528408
Inventors:
John M. Dugan - Pittsburgh PA
Assignee:
Blaw-Knox Foundry & Mill Machinery, Inc. - Pittsburgh PA
International Classification:
B22D 2702
US Classification:
164 52
Abstract:
A method of making a compound roll of the type having a shell portion of a material that has a high hardness and wear resistance and a core portion forming the center core and neck sections of a material that has a low alloy content and a relatively low hardness so as to be highly resistant to breakage, which method comprises the steps of precasting the shell portion in the form of a hollow cylinder having the desired external and thickness dimensions, setting the shell portion on top of a neck forming mold section with the longitudinal axes of the shell portion and the mold section extending vertically, positioning an electrode of an electro-slag melting unit within the interior of the shell portion and the neck mold section, the electrode being made of material which in the remelted and subsequent resolidified condition will have the desired properties for the center core and neck sections, and passing electric current through the electrode to cause melting thereof to progressively fill the mold section and the interior of said shell portion.