What is the difference between cope and drag?

What is the difference between cope and drag?

In foundry work, the terms cope and drag refer respectively to the top and bottom parts of a two-part casting flask, used in sand casting. The flask is a wood or metal frame, which contains the molding sand, providing support to the sand as the metal is poured into the mold.

What are a cope and drag used for?

Cope and Drag refers respectively to the top and bottom of the mold use in Sand Casting. They are metal flasks used to contain and support the Green Sand during the mold making and mold pouring processes.

What is the difference between the cope and drag parts of the mold?

Cope and Drag are the two parts of the casting flask. Cope is the upper part and drag is the lower part. Even if the casting process is flaskless , the same terms are used for the upper ans lower parts. Generally the flask is made of wood or metal.

What is drag in moulding?

– The process in which molten metal is poured into mould of desired shape and desired component is obtained is called as casting process. – Drag is defined as the lower part of two part casting flask.

What is the difference between match plate pattern and cope and drag pattern regarding their use?

Match plate pattern It is used to simultaneous production of both drag and cope molds. The cope and drag flask is prepared on two sides of this match plate. The match plate is removed after molding, the complete mold obtained by joining two pieces of mold.

What is onepiece pattern?

1. Single-piece or solid pattern. Solid pattern is made of single piece without joints, partings lines or loose pieces. It is the simplest form of the pattern.

What is Cope in casting process?

In a two-part mold, which is typical of sand castings, the upper half (containing the top half of the pattern, flask, and core) is called the cope. The lower half is called the drag. The parting line is the line or surface that separates the cope and drag.

What is the difference between match plate pattern and cope and drag pattern?

Basically Match plate pattern is a split pattern. Cope and drag areas are on the opposite faces of metallic plate. This metallic plate is termed as Match Plate. This type of pattern requires very less hard work and gives very high output.

What is runner and riser?

“Runners” are where the liquid runs into the mold when you pour the casting. “Risers” are where the excess liquid rises up above the shape of the part you want to case, to make sure the mould is completely full.

What is Cope in casting?

What is sweep pattern?

Sweep pattern: A sweep is a section or board (wooden) of proper contour that is rotated about one edge to shape mould cavities having shapes of rotational symmetry. This type of pattern is used when a casting of large size is to be produced in a short time. Large kettles of C.I. are made by sweep patterns.

When might separate cope and drag patterns be used instead of a match plate?

Cope and Drag Patterns 2) are similar to match plate patterns except that the cope and drag portions of a split pattern are mounted or integrally cast or machined on separate plates. Cope and drag patterns are preferred over match plate patterns for high-volume production or for the production of large castings.

Which pattern could fit entirely in the COPE or in the drag?

single piece pattern
____________ pattern could fit entirely in the cope or in the drag. Explanation: The single piece pattern is made up of a single piece as its name suggests. One of the faces is expected to be which is used as a parting plane. Hence, it can be said that it could fit entirely in the drag.

What is drag sand?

sand drag (plural sand drags) (rail transport, UK) a pile of sand or earth at the end of a siding or bay platform, intended to stop trains that overrun or pass through trap points set for a siding.

Why is sprue tapered?

During casting or molding, the material in the sprue will solidify and need to be removed from the finished part. It is usually tapered downwards to minimize turbulence and formation of air bubbles.

What are the different types of patterns used in foundry?

Types of foundry Pattern

• Single piece pattern.
• Split piece pattern.
• Loose piece pattern.
• Gated pattern.
• Match pattern.
• Sweep pattern.
• Cope and drag pattern.
• Shell pattern.

What is the difference between a Cope and a drag?

In foundry work, the terms cope and drag refer respectively to the top and bottom parts of a two-part casting flask, used in sand casting. The flask is a wood or metal frame, which contains the molding sand, providing support to the sand as the metal is poured into the mold.

What is a Cope and drag pattern in foundry?

Cope And Drag Pattern. In foundry work, the terms cope and drag refer respectively to the upper and lower parts of a two-part casting flask, used in sand casting. The flask is a wood or metal frame, which contains the molding sand, providing support to the sand as the metal is poured into the mold.

How do you make a drag and cope out of sand?

A board is then placed on top of the drag and the drag is flipped over. Then, the cope is placed on the drag, and dowels (or pins) are put in the sand to make holes for the sprue and one or more risers. Talcum powder and sand are again sifted over the pattern, and rammed to fill the cope.

Why choose cope&drag Kustoms?

When you work with Cope & Drag Kustoms you will get years of experience, personalized attention to detail, and craftsmanship devoted to your project. Whether your part run is big or small, and no matter how far along your project is, Cope & Drag Kustoms can provide you metalcasting expertise at a value unmatched by other foundries.