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Sand Core Production

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44:31
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Edelbrock Aluminum Foundry and Machining Full Tour & Behind the Scenes! (Pouring Molten Metal!)

What happens here

Patrick demonstrates 'hot box' sand cores, which are heat-cured, and explains that these yellow sand pieces form the internal passages of a casting. He also shows 'cold box' cores, which are gas-cured. Core boxes made of cast iron are used to withstand the heat and create the shape of the cores. These core boxes are specifically designed for different manifold types, such as those for carburetors or thermostat housings.

Goal: Understand the two primary methods of creating sand cores (hot box and cold box) and their application.

Tools and materials

  • Core Boxes — Shaping sand into specific core designs
  • Sand — Primary material for cores, cured with heat or gas

What they say

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hot boxes. Anything you see here are all cured by heat. Some of these you might even recognize from a manifold like that. That's the core box. There's a hot box cast iron to withstand the heat. of your manifold where the carburetor sits. This this is what you would see at the bottom. These are what you call your water jacket cords. This is where your thermostat housing will sit right on top. These are some white sand course. These aren't hot box. These are cured with gas. You can see the different types of sand. So all these pieces of sand are what keep the open space and then it gets busted out and you're left with the final product. Exactly. All these cords will be shaken out down at the end of the line over there. Here we have a cylinder head car assembly intake exhaust and then your water jacket, your slab that'll create the whole deck surface of the cylinder head. We have three molding lines. I walk through this first one. It's all similar. We have big plates that have a pattern on it which takes the representation of the outside of the of the manifold or the head or whatever the hard we're casting. We have two patterns. I don't know if you can see it. There's a manifold in there. He's going to bring down the blast over it. And when he brings down the blast, you're going to make the the

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