While each machine shop will have its own set of best practices, copper tungsten generally has the machining and grinding characteristics of hard gray cast iron. However, the machining characteristics will vary depending on the composition of the copper tungsten.
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In fact, material composition greatly influences performance in multiple ways. Interestingly, while both copper and tungsten in their pure forms can pose significant machining and manufacturability challenges, those difficulties are overcome when the two materials are combined.
That helps to make copper tungsten electrodes a great choice for electrical discharge machining (EDM) of carbides and for resistance spot welding.
In discussing the benefits of copper tungsten, we’ve focused on unique material properties and their effects on production performance. These properties include:
Along with the composition of the material, each of these factors play a unique role in the success of copper tungsten’s performance. Yet, none of them matter much if the material is impossible or costly to manufacture.
Pure copper becomes nightmarishly gummy when ground or machined, and is notorious for producing burrs. In fact, the cost of deburring a copper electrode can supersede the cost of manufacturing it.
Tungsten, on the other hand, is brittle, and its density makes it difficult to machine. The results are high tool wear rates and increased production times.
Not surprisingly, though, by combining copper with tungsten, manufacturability is improved to an impressive degree. The addition of tungsten to copper eliminates the burr issues of copper. Conversely, copper reduces the tool stress relative to tungsten machining.
We discuss elsewhere how the powder metallurgy process that creates the copper tungsten “pseudo-alloy” can be manipulated to improve performance. In addition, that process of pressing, sintering, and infiltrating is constantly being reimagined to produce a denser, more stable product that makes for predictable manufacturing outcomes.
For extremely complex or detailed electrode geometries, the tungsten powder can be poured directly into a mold and then sintered with the copper. That provides greater flexibility for a range of electrode manufacturing requirements.
To learn more about the advantages of copper tungsten and why you might choose it as a material for resistance welding electrodes, download our free white paper.
When selecting the right alloy for your non-sparking, non-magnetic safety tools, you have two choices: copper beryllium tools or aluminum bronze tools. It’s important to keep a few key properties in mind: zone compatibility, hardness, durability, magnetic properties, and composition.
Different zones require certain alloys. Our copper beryllium tools fulfil ATEX requirements for work in a number of zones, including 0, 1, and 2 (for gas, mists, or vapors); 20, 21, and 22 (for dusts); and M1 and M2 (mining). CS Unitec’s aluminum bronze tools are appropriate for work in zones 1 and 2, and 21 and 22. Beryllium copper tools can handle more environments.
Hardness is an aspect to keep in mind in this selection process as well. Our aluminum bronze alloy tools have a hardness of 27 HRC. If your application requires a tool with higher hardness rating, copper beryllium equipment, with an HRC of 38, is a good choice.
Beryllium copper tools are extremely durable, due to the alloy’s tensile strength and high hardness. Aluminum bronze tools, because of their chemical composition, are not as durable as copper beryllium equipment.
Contact us to discuss your requirements of Wrenches Manufacturer China. Our experienced sales team can help you identify the options that best suit your needs.
Magnetic properties of these alloys are another important aspect in choosing the correct tool for your application. If you need a tool for non-critical, non-magnetic applications, aluminum bronze equipment features low magnetism due to its minimal ferrous composition. Beryllium copper tools have a more non-ferrous composition, so this equipment is safer for applications that require non-magnetic properties.
Check out the composition qualities of each alloy below to see which works best for your application. Each user must follow all appropriate safety regulations when choosing a tool for their particular working environment.
Copper beryllium tools and aluminum bronze tools both offer a range of great qualities and usage. For more information, check our descriptive table below.
Safety Tools must only be ground or reshaped by companies approved for grinding such material, according to OSHA regulations.
Exact appearance and/or specifications subject to change without notice.
MSDS (Safety Data Sheet) / Bulletin can be provided upon request or can be downloaded here:
SDS: Cast Copper Beryllium
SDS: Cast Aluminum Bronze
ATEX information: http://ec.europa.eu/growth/sectors/mechanical-engineering/atex/index_en.htm
BAM Certification Information (PDF)
Choosing the right alloy – AlBr or CuBe – for your application. (Download
Ex Zone / Non-Sparking Tool Poster
, PDF, 225k), PDF, 225k)
Download the
Complete Safety Tool & Non-Sparking Catalog (PDF)
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