Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB1304/53A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Motors Liquidation Co
Original Assignee
Motors Liquidation Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Motors Liquidation CofiledCriticalMotors Liquidation Co
Publication of GB724782ApublicationCriticalpatent/GB724782A/en
B22C9/12—Treating moulds or cores, e.g. drying, hardening
Landscapes
Engineering & Computer Science
(AREA)
Mechanical Engineering
(AREA)
Molds, Cores, And Manufacturing Methods Thereof
(AREA)
Mold Materials And Core Materials
(AREA)
Laminated Bodies
(AREA)
Abstract
724,782. Moulding processes. GENERAL MOTORS CORPORATION. Jan. 16, 1953 [Feb. 4, 1952], No. 1304/53. Class 83 (1). A method of curing a sand-resin mould or core comprises exposing a blanket of the sandresin mix on a metal pattern to temperature conditions in excess of 800‹ F. The exposure may be for a time of less than 60 seconds. The coated pattern may be exposed for 38 seconds to infra-red radiation from a furnace heated to 1600‹ F., or in a circulating-air type furnace, at a temperature of 1000-1200‹ F. or 800‹ F. for 30 and 45 seconds respectively. A hollow core may be cured by the insertion of a hot mandrel. Mould and core materials.-Phenolformalde hyde and melamine formaldehyde resins are quoted as examples of binders.
GB1304/53A1952-02-041953-01-16Improvements relating to sand-resin moulds and cores for casting metals
ExpiredGB724782A
(en)
A procedure for the manufacture of males and molds for the foundation of all kinds of metals (Machine-translation by Google Translate, not legally binding)