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Carbide Blades Increase Foundry Cutoff Efficiency.


Custom Castings, Ltd., a 61-employee permanent mold mold, name for certain multicellular organisms of the various classes of the kingdom Fungi, characteristically having bodies composed of a cottony mycelium. The colors of molds are caused by the spores, which are borne on the mycelium.  aluminum foundry in Winnipeg, Manitoba, Canada, was having difficulty with its carbon steel bandsaw Noun 1. bandsaw - an endless saw consisting of a toothed metal band that is driven around two wheels
band saw

power saw, sawing machine, saw - a power tool for cutting wood
 blades due to the intense heat they were generating and their inability to cleanly clean·ly  
adj. clean·li·er, clean·li·est
Habitually and carefully neat and clean. See Synonyms at clean.

adv.
In a clean manner.



clean
 cut through the occasional hard inclusion. In addition, the plant was using at least 30 blades/month to remove gates and risers and finish the castings in its machine shop.

To increase efficiency in its operation and improve its ability to finish its 1-50-lb castings on its three bandsaws, Custom Castings switched to Sandvik 3869 Carbide carbide, any one of a group of compounds that contain carbon and one other element that is either a metal, boron, or silicon. Generally, a carbide is prepared by heating a metal, metal oxide, or metal hydride with carbon or a carbon compound.  Triple Set Blades from Sandvik Saws and Tools Co., Scranton, Pennsylvania "Scranton" redirects here. For other places named Scranton, see Scranton (disambiguation).

The City of Scranton is the county seat of Lackawanna CountyGR6 in Northeastern Pennsylvania, USA.
. According to according to
prep.
1. As stated or indicated by; on the authority of: according to historians.

2. In keeping with: according to instructions.

3.
 the foundry, the result has been a dramatic increase in blade life and the efficiency of the cutoff operation.

"Some carbon blades last 2 days and others last a week," said the foundry's machining department supervisor. "They usually last for 200-5000 castings. However, this new carbide blade is still going after 4 months. The carbide blade cut 25,000 castings in the first month and is still going."

In terms of cutting speed, the carbide tipped blade cuts at 1200-1300 sfm, compared to 700 for carbon steel blades. In one typical job at Custom Castings, the cutting of cast tractor steps increased from 20 parts/hr with carbon steel blades to 30 parts/hr with a carbide sawblade. In addition, the strong triple-set tooth pattern of the carbide blade makes a wide kerf kerf  
n.
1. A groove or notch made by a cutting tool, such as a saw or an ax.

2. The width of a groove made by a cutting tool.
 and is more forgiving on turning stresses. The strong set steers the blade through turning cuts.

"With the carbide blade we can jam the parts through the saw as fast as we want," said the machining supervisor. "We get a nice straight cut that makes things easier for the sanding department."

In another example, a carbide blade was installed on a bandsaw in October 1998 and was still running in February with little tooth wear after 70,000 castings. Despite the higher cost of the carbide-tipped blades, Custom Castings saved more than 83% on the cost of bandsaw blades due to the increased life of the new product.
COPYRIGHT 1999 American Foundry Society, Inc.
No portion of this article can be reproduced without the express written permission from the copyright holder.
Copyright 1999, Gale Group. All rights reserved. Gale Group is a Thomson Corporation Company.

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Comment:Carbide Blades Increase Foundry Cutoff Efficiency.
Publication:Modern Casting
Article Type:Brief Article
Geographic Code:1USA
Date:Nov 1, 1999
Words:345
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