Method for lost foam casting of bimetal bi-solution composite crusher hammer head

Abstract

A method for lost foam casting of a bimetal bi-solution composite crusher hammer head comprises arranging a hammer handle downwards and a working face upwards in a pattern assembly composed of patterns and formed by a main runner, an ingate, an overflow groove and a runner in connection, the overflow groove being of a hammer handle material, the upper port plane of the gate being the casting boundary of the hammer handle material, and the upper part being the down gate and the main runner of a hammer head material; smelting the hammer head material and the hammer handle material in two furnaces respectively, taking out the hammer head material from the furnace when the hammer head material reaches 1,450 DEG C and taking out the hammer handle material from the furnace when the hammer handle material reaches 1,550 DEG C; casting molten steel to the hammer handle material at 1,450 DEG C, and blocking the molten steel flowing out from the overflow groove by use of refractory clay outside a casting frame, and then casting molten steel to the hammer head material at 1,350 DEG C until reaching the top of the sprue; and cutting the gating-feeder when the casting is solidified and cooled to obtain the bimetal composite hammer. The inventive method is simple in process and stable in quality and has the production efficiency doubled.

Description

technical field [0001] The invention relates to a method for casting a hammerhead of a bimetallic double-solution composite crusher with lost foam. Background technique [0002] At present, the production of bimetallic double-solution composite hammerheads is made of hard sand molds (sodium silicate sand blown with carbon dioxide and resin sand) and vertically poured. Only two pieces can be set in one box, and the two metal liquids must be poured into the cavity at intervals during the pouring process. For the above-mentioned process, its molding process is complicated, the cost is high, the production efficiency is low, and the product yield is low. The molten metal of the two materials needs to be poured at intervals, and the composite material cannot be stabilized at all in production. If the interval is short, the two liquids will mix; if the interval is long, it is easy to form a cold barrier and cannot be combined. At present, several domestic companies are producin...

AI Technical Summary

Problems solved by technology

At present, there are several domestic companies producing double-fluid composite hammers, but their composite quality has not been stable so far.

In addition, it is known that some manufacturers are using the lost foam casting "bimetallic double liquid compound hammer", but they cannot realize the method of a group of multiple parts.

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