Method for manufacturing cast-iron radiator without sand inside cavity

Abstract

A technology for manufacturing the heat radiator with cast iron, which has no sand in its internal cavity, includes preparing sand core, modelling, loading sand core in mould, and casting. Said steps for preparing sand core includes preparing resin sand from sand, resin, dibutyl ester, calcium stearate, urotropine and silane as coupling agent through mixing, preparing sand core by moulding, solidifying, demoulding and trimming.

Description

technical field [0001] The invention relates to a method for producing cast iron radiators, in particular to a method for producing inner cavity sand-free cast iron radiators, which is an improvement to the existing production process of cast iron radiators, belongs to the field of casting technology, and is suitable for existing production Manufacturers of cast iron radiators. Background technique [0002] At present, there are many domestic manufacturers of cast iron radiators, all of which adopt the traditional casting process, especially when making casting sand cores, it still needs to be completed by the original method, that is, ordinary sand is added to the oil binder, and the sand is artificially filled. The sand cores for casting are made by pounding, unboxing, and drying. The sand cores produced by them have low strength, low molding rate, and poor precision, which will cause partial skin of the radiator and produce a lot of oily smoke when fired. It causes e...

AI Technical Summary

Problems solved by technology

The sand cleaning machine has a complex structure and high production cost. The life of the cast iron radiator is affected during sand cleaning, and the sand on the inner wall of the radiator cannot be cleaned.