Method for manufacturing metal molds used for casting manganese steel crushing walls or rolling motor walls of cone crushers

Abstract

The invention discloses a method for manufacturing metal molds used for casting manganese steel crushing walls or rolling motor walls of cone crushers. The method is characterized by comprising the following steps of: (1) manufacturing cast molds according to different sizes, specifications and models of the manganese steel crushing walls or the rolling motor walls of the cone crushers; (2) respectively designing and manufacturing near inner metal molds and near outer metal molds which have corresponding thicknesses and overall structures according to the shapes of the cast molds; and (3) distributing trumpet-shaped vent holes on the near inner metal molds and the near outer metal molds. Castings produced by using the method do not produce fragmentation; the metal molds can accelerate the cooling speed of the castings so that the surfaces of the castings have fine grain structures; and the mold cavities have the characteristics of high size precision, bright and clean surface and no distortion.

Description

technical field [0001] The invention relates to casting, in particular to a method for manufacturing a metal mold used for casting manganese steel crushing walls of cone crushers or rolling mortar walls. Background technique [0002] At present, the domestic production of broken wall, rolling mortar wall high manganese steel wear-resistant castings, especially the casting methods of medium and large cone crusher broken wall, rolling mortar wall casting mainly include: limestone sand water glass CO 2 Hardened hand scraper molding; quartz sanded water glass CO 2 Hardening method, manual modeling with sand box and real sample mold. The main method process is: assemble the outer sand box, real sample mold and inner sand box → fill the surface sand of a certain thickness on the surface of the real sample mold → place a certain thickness and quantity of sand-separating cold iron on the working surface of the casting → fill the back Sand and compact → Blow CO 2 Hardening → mold ...

AI Technical Summary

Problems solved by technology

[0003] In the above casting process, in order to play a chilling role and accelerate the solidification speed of the casting, two or more 40-50mm thick sand-separated chills are placed on the surface sand layer laid by the real sample mold. Refilling the back sand, this method of laying the sand-isolated cold iron by hand is not only complicated and inefficient, but also difficult to control the thickness parameters of the surface sand laid by the real sample mold, so that the quality of the casting cannot be guaranteed

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