Cemented Carbide Mining Button Grades
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- Category: Tungsten Information
- Published on Tuesday, 28 July 2015 18:41
- Written by xiaobin
- Hits: 323
Cemented Carbide Mining Button Grades
|
Grade |
Performance & application recommended |
Density |
Hardness |
TRS |
|
g/cm3 |
HRA |
MPa |
||
|
YG4C |
Mainly used as small buttons for percussion bits to cut soft and medium hard formation. |
15.1 |
90.0 |
1800 |
|
YG6 |
For coring crowns, electric coal drill bits, coal cutting picks, oil cone bits and scraping knife bits, used in geological prospecting, coal mining and oil well boring. |
14.9 |
90.0 |
2100 |
|
YG8 |
For coring crowns, electric coal drill bits, coal cutting picks, oil cone bits and scraping knife bits, used in geological prospecting, coal mining and oil well boring. |
14.7 |
89.5 |
2400 |
|
YK05 |
Mostly used as the buttons of small and medium sized percussion bits and as the inserts of rotary prospecting bits to cut soft and medium hard formations. |
14.95 |
90.5 |
2500 |
|
YG8C |
Primarily for the buttons and inserts of rotary percussion bits to cut medium-hard formations. |
14.7 |
88.5 |
2450 |
|
YK15 YG9C |
Suitable to strips, conical buttons for rotary percussion-resistant, geological prospection buttons, cut soft and medium hard formations. |
14.7 |
87.8 |
2450 |
|
YG20 YG10C |
Primarily for the buttons and inserts of rotary percussion bits to cut medium-hard and hard formations. |
14.4 |
87.0 |
2550 |
|
YK25 |
Primarily for the buttons and inserts of rotary percussion bits to cut medium-hard and very hard formations. |
14.5 |
87.5 |
2600 |
|
YG11C |
Largely for the inserts and buttons of percussion bits and tricone bits to cut medium-hard, hard, and very hard formations. |
14.4 |
87.0 |
2600 |
|
YK40 YG13C |
Primarily for the buttons of tricone bits and inserts of rotary percussion bits to cut hard and very hard formations. |
14.2 |
86.5 |
2650 |
|
YG15C |
For oil cone drill bits, for medium soft and medium-hard rocks. |
14.0 |
86.5 |
2700 |
Tungsten Carbide Manufacturer & Supplier: Chinatungsten Online - http://www.tungsten-carbide.com.cn
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Structure of Tungsten Collimator Kit
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- Category: Tungsten Information
- Published on Tuesday, 28 July 2015 18:39
- Written by wenjing
- Hits: 424
In order to accommodate applications where the X-ray flux is too high for both the detector and the electronics that process the X-ray spectrum, a “Collimator Kit” has been developed to collimate the primary X-ray beam. This system is comprised of standard 1.5 inch extender box which slides inside collimator housing.
The collimator housing can accommodate up to two tungsten collimator disks that are placed inside a bayonet holder in front of the detector. All tungsten disks are made of alloy HD17 (90% W, 6% Ni, 4% Cu). All Tungsten disks and spacers have a diameter of 0.625 inches. This Tungsten (W) Spacer /Collimator is 36 mm thick with a 300 µm hole. It is designed to stop and collimate x-rays greater than 100 keV produced from high energy tubes.
The picture shows the structure of tungsten collimator kit:
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What's The Difference in Darts Materials?
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- Category: Tungsten Information
- Published on Tuesday, 28 July 2015 18:21
- Written by yingying
- Hits: 331
On the darts market, we can find different weight, price, materials between darts. But how can we distinguish between one variety from another?
Metals vary in density and weight, and so some metals are more ideal for darts than others. Lower priced recreational darts often use common metals like brass and copper. These metals are not very dense, so the heavier the dart, the thicker or longer it tends to be. Tungsten is very dense and heavy metal, allowing for barrels and shafts that are slim in design. Tungsten darts are mixed with nickel, iron and copper. Brass and nickel-silver are lighter metals in comparison to tungsten which is a very heavy and dense metal. It is seen that most of the good throwers use tungsten darts but if you are a starter then you would not be throwing tight groupings whatever dart you are using. On an average the size of a 20 gram tungsten darts are half the size of a brass dart which allows for tighter groupings on the board.
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Tungsten Alloy for Medical Equipment
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- Category: Tungsten Information
- Published on Tuesday, 28 July 2015 18:34
- Written by wenjing
- Hits: 316
Because tungsten alloy for X-ray attenuation ability is used for all kinds of radioactive source shielding components or container of a kind of ideal material. In addition, tungsten alloy is high density and environmental friendly. Tungsten alloy is usually used in the medical anti-radiation shielding materials and gamma knife.
Medical tungsten alloy radiation shielding material series, tungsten alloy grating blade, tungsten alloy protective tank -- for medical radiation shielding wall. Tungsten alloy can be produced as needle radiation shielding for medical radioactive liquid shielding. Tungsten alloy memory, cans, boxes and other containers used to store radioactive matter, collimator, for medical linear accelerator and nuclear technology applications in tungsten alloy series test container system collimator, Co60 radiation shielding.
Tungsten Alloy Manufacturer & Supplier: Chinatungsten Online- http://www.tungsten-alloy.com
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Film on Tungsten Points Surface
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- Category: Tungsten Information
- Published on Tuesday, 28 July 2015 17:48
- Written by Yahong
- Hits: 321
Film components on tungsten points’ surface is WO3, which is non-conductive, and whose dura layer possessing integrity and density, because it’s VOX / V value (3.59) is more than 1. In the process of use, tungsten points’ surface would generate a tan oxide film layer, especially when they have been placed in a condition of high temperature and high humidity before using for a long time. And due to its poor conduction, the equipment would not operate.
Chemical formula:
VOX=MOX/DOX
V=X*Mw/Dw
Among which,
VOX refers to oxide volume;
MOX refers to oxide molecular weight;
DOX refers to oxide density;
V refers to the generated single oxide molecules’ metal volume;
X refers to single oxide molecules’ metal atom amount;
Mw refers to metal atomic weight;
Dw refers to metal density.
It is a loose, porous and incomplete oxide film when VOX / V= MOX* Dw/ DOX* X*Mw＜1;
And the layer of metal oxide film possess integrity and density when VOX / V= MOX* Dw/ DOX* X*Mw＞1.
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