FAQ | Site Map | Careers | Contact

  CAPABILITIES INDUSTRIES QUALITY NEWS INFORMATION ABOUT
 

 

  METAL CASTING - CORE MAKING  
 

Metal castings are used by most people everyday but very few have any idea of what they are or how they are made. To that end we have prepared the following to help better understand the casting process.

 
 
 
Core Making  
 

Generally, cores are the internal passages of castings. Most cores at SWS are made by mixing sand (both new and reclaimed at SWS) with a two part chemical binder system. A third part, the catalyst, is introduced the the mixed sand as a gas to 'set' or 'cure' the core. This core process is referred to as a Cold Box System.

The sand and binder are mixed in a screw type continuous mixer. As the sand leaves the mixer it is discharged into a blow head magazine on top of the core machine.

The core machine will then shoot the sand under air pressure into the core box. The core box is then 'gassed' with a catalyst to cure the sand. A fume scrubber is used to remove any excess catalyst gas from the machine.

After the core is 'cured', it is removed from the core box and 'finished' by removing 'fins' from the parting lines. Complex cores are sometimes assembled from many smaller cores at this point. Once the finishing process is complete, the core is placed on racks and staged for use at the molding assembly area.

   

Overview

Core Making

Melting

Molding

Cleaning

Terminology

 
   
2011 American Railcar Industries, St. Charles, Missouri USA, All Rights Reserved.

| Terms Of Use | Privacy Policy | Design by SMC