Carbon dioxide curing mold binder

Abstract

Abstract PURPOSE: The mold which is obtainable by using the binder composed of alcohol- soluble phenolic resin, hydroxides and/or oxides of polyvalent metals, water and others, permits immediate rapping at room temperature after carbon dioxide blowing and is superior in degradation characteristic after forging. CONSTITUTION: a) Phenolic-group-contained resin having phenolic hydroxyl groups which are not water soluble but alcohol soluble, e.g., alcohol soluble novolak or resol type phenol formaldehyde resin, etc. b) Hydroxides and/or oxides of Ca, Mg, etc. c) Water. d) If necessary, organic solvents such as methanol or the like and/or hydroxides of alkaline metals such as NaOH, etc. of the case when, e.g., the hydrophilic nature of the foregoing resin is insufficient. The above a thru d components are evenly mixed as mixed powder, solution form, etc. into refractory particles, thence if carbon dioxde is blown, they immediately exhibit binding powder, thereby yielding sufficient mold strength. This material is combustible and the degradation characteristic of the mold after casting is superior. COPYRIGHT: (C)1980,JPO&Japio

Inventors

• 👤 Susumu Koarai
• 👤 Takeshi Sumi
• 👤 Shigeo Sase
• 👤 Masatoshi Yoshida
• 👤 Masae Kuroda

Bibliographic Details