Process for producing foundry mounds and cores

Details Process for producing foundry mounds and cores Process for producing foundry mounds and cores

1975-05-28

1977-02-01

Hayes, Lorenzo B.

Compositions: coating or plastic

Coating or plastic compositions

Molds and mold coating compositions

106 386, 106123LC, 106214, 164 37, B28B 734

Patent

active

040060276

ABSTRACT:
Foundry moulds and cores hardening at a room temperature which feature high strength can be produced from a moulding mixture comprising moulding sand, an organic binder capable of interacting with a hardening agent and causing the mixture to harden, the hardening agent being particulate material containing predominantly CaO and Cl.sub.2 O.sub.3 in a relative molar proportion of from 1.6:1 to 4:1 and from 40 to 98% by weight of the tricalcium aluminate.
As to the organic binder, use may be made of lignosulfonate of an alkali, or an alkali-earth metal, or ammonium or mixtures thereof, a soluble resin produced by pyrolysis of wood pulp and processed with lime, and dextrin.
The foundry moulds and cores can also be produced by pouring a fluid mixture comprising a foaming agent which is additionally introduced into it to render the mixture into the fluid state.

REFERENCES:
patent: 3196505 (1965-07-01), Moren
patent: 3285756 (1966-11-01), Moren
patent: 3662830 (1972-05-01), Martin
patent: 3804641 (1974-04-01), Lyass et al.

Affiliated with

Also associated with

Rating

Process for producing foundry mounds and cores does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for producing foundry mounds and cores, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for producing foundry mounds and cores will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1089948