Tungsten Heavy Alloy Bucking Bars-1
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- Category: Tungsten Information
- Published on Monday, 24 November 2014 10:07
- Written by Sherry
- Hits: 479
Tungsten Heavy Alloy bucking bars are resulting in a bucking bar of the same weight but half the size. Bucking bars are used in rivet setting to upset the shank of the rivet. Tungsten Heavy Alloy bucking bars reduce the recoil when reflecting the impact back to the rivet shaft.
In normal use, bucking bars experience considerable stress. Bucking bars are designed to provide a heavy and hard surface to support the rivet when the rivet gun delivers its impulse force. If the metal alloy is too soft, the bucking bar will wear quickly or not provide the necessary assembly support. Alternatively, if the metal alloy is too hard and brittle, the bucking bar will fracture easily. Our tungsten metal alloys are designed especially for bucking bar applications.
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Tungsten Concentrate Production
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- Category: Tungsten Information
- Published on Friday, 21 November 2014 11:29
- Hits: 414
Pricing of Tungsten Concentrate
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- Category: Tungsten Information
- Published on Friday, 21 November 2014 10:29
- Hits: 440
Prices for tungsten concentrates produced by mines and the intermediate tungsten powers made by the secondary processors are quoted in metric tonne units (mtu). An mtu is made up of 10kg of WO3, as contained within the particular material in question, concentrates or APT (this relationship conveniently lead to the fact that a 1% resource grade is equal to 1 mtu). The two materials for which prices are quoted widely and reported in mtu of WO3 are listed as following:
1.tungsten trioxide, WO3, (containing 79.3% tungsten metal), as the critical constituent in the minerals in mine concentrates
2.ammonium paratungstate, APT, the main secondary downstream product made from concentrates.
Tungsten Manufacturer & Supplier: Chinatungsten Online - http://www.chinatungsten.com
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Value of Tungsten Ore
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- Category: Tungsten Information
- Published on Friday, 21 November 2014 11:02
- Hits: 478
Occurence and History of Tungsten Scheelite
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- Category: Tungsten Information
- Published on Friday, 21 November 2014 10:22
- Hits: 619
Scheelite often occurs in tin-bearing veins and is always found in association with gold. Fine crystals have been obtained from Caldbeck Fells in Cumbria, Zinnwald/Cínovec and Elbogen in Bohemia, Guttannen in Switzerland elsewhere. At Trumbull in Connecticut and Kimpu-san in Japan large crystals of scheelite completely altered to wolframite have been found: people from Japan have been called “reinite.”
Scheelite was first described in 1781 for an occurrence in Mount Bispbergs klack, Dalarna, Sweden, and named for Carl Wilhelm Scheele. Because of its unusual heaviness, it had been given the name tungsten by the Swedes, meaning “heavy stone.” The name was later used to describe the metal, while the ore itself was given the name scheelite.
Tungsten Manufacturer & Supplier: Chinatungsten Online - http://www.chinatungsten.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: sales@chinatungsten.com
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