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EP 0172937 B1 19880210 - A METHOD FOR MAKING SAND MOLDS

Title (en)

A METHOD FOR MAKING SAND MOLDS

Publication

EP 0172937 B1 19880210 (EN)

Application

EP 84110351 A 19840830

Priority

EP 84110351 A 19840830

Abstract (en)

[origin: EP0172937A1] In a method of preparing a sand mold in which mold sand within a mold frame (2) is squeezed from an upper side opposite to a lower side of the frame at which a pattern is embedded and also from said lower side, the squeezing from the lower side is made only after the squeezing from the upper side has been completed by about or more than 95% of a total squeezing stroke. The sand mold (3) thus prepared comes to have a desired hardness particularly at casting surfaces thereof.

IPC 1-7

B22C 11/06; B22C 15/08; B22C 15/02; B22C 15/14; B22C 15/28

IPC 8 full level

B22C 15/08 (2006.01)

CPC (source: EP)

B22C 15/08 (2013.01)

Designated contracting state (EPC)

CH DE GB LI

DOCDB simple family (publication)

EP 0172937 A1 19860305; EP 0172937 B1 19880210; DE 3469278 D1 19880317

DOCDB simple family (application)

EP 84110351 A 19840830; DE 3469278 T 19840830