Tungsten carbide Burrs, are burrs made of tungsten carbide, also known as rotary files which consist of small and large shaped cutters used in die grinders, rotary tools, and dentist drills. The name may be considered suitable when their mini-size head (3 mm diameter shaft) is closely similar to that of a seed in the burr fruit. Tungsten carbide burrs are also used in CNC machining robot type centers for removing burrs (the small flakes of metal) after a machining process (burrs-cutting). To sustain the right external speed and cutting environment they are rotated at the maximum velocity achievable, appropriate with their size and structure.

In engineering, a burr can be described as the raised circumference on metal. It may be present in the form of a fine wire on the edge of a freshly sharpened tool or as a raised portion on a surface, after being struck a blow from an equally hard or heavy object. Specifically, burrs are as a rule useless residual that is the effect after machine grinding, drilling, milling, or turning. In the following report the word, burr, refers to the excess substance of material and carbide burr refers to the tool that removes the excess material.

De-burring：The process of removing burrs, the small flakes of metal, is known as de-burring. Burr creation in machining accounts for a major part of the costs for manufacturers throughout the world. Drilling burrs, for example, are common when drilling almost any material. The Boeing 747 airplane has approximately 1.3 million holes drilled in it most of which have to be de-burred to some extent (Burrs-metal, April 2007). As one could imagine, the cost and time needed to perform these drilling and de-burring operations is significant.

In addition to drilling, milling is also a source of burr formation in machining. A good example of unwanted burrs is in the automotive industry where cylinder blocks, pistons and other engine components are cast then milled to a specific dimension. With higher demands placed on accuracy and precision, burr formation is of critical importance because it can affect engine performance, reliability, and durability。

Tungsten Carbide Manufacturer & Supplier: Chinatungsten Online - http://www.tungsten-carbide.com.cn
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email:This email address is being protected from spambots. You need JavaScript enabled to view it.
Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn

There are many different combinations of numbers you can use to successfully double-out in an tungsten dart ’01 game. Here are some alternate out number combinations:
 
Legend: S= Single,    D= Double,    T= Triple,    SB= Single Bull,    DB= Double Bull

164 Out
T19 + T19 + DB (57 + 57 + 50)
154 Out
T19 + T19 + D20 (57 + 57 + 40)
150 Out
T20 + DB + D20 (60 + 50 + 40)
148 Out
T20 + T20 + D14 (60 + 60 + 28)
146 Out
T19 + T19 + D16 (57 + 57 + 32)
145 Out
T20 + T19 + D14 (60 + 57 + 28)
144 Out
T18 + T18 + D18 (54 + 54 + 36)
T20 + T16 + D18 (60 + 48 + 36)
142 Out
T20 + T18 + D14 (60 + 54 + 28)
T20 + DB + D16 (60 + 50 + 32)
141 Out
T17 + T18 + D18 (51 + 54 + 36)
140 Out
T20 + T16 + D16
139 Out
T19 + T18 + D14 (57 + 54 + 28)
T20 + T19 + D11 (60 + 57 + 22)
T19 + DB + D16 (57 + 50 + 32)
135 Out
DB + T19 + D14 (50 + 57 + 28)
SB + T20 + DB (25 + 60 + 50)
DB + T15 + D20 (50 + 45 + 40)
SB + T20 + DB (25 + 60 + 50)
134 Out
DB + T14 + D20 (50 + 42 + 40)
T20 + T20 + D6 (60 + 60 + 12)
T20 + T16 + D12 (60 + 48 + 24)
T20 + T12 + D18 (60 + 36 + 36)
DB + DB + D16 (50 + 50 + 32)
131 Out
T19 + T14 + D16 (57 + 42 + 32)
130 Out
T20 + T20 + D5 (60 + 60 + 10)
S20 + T20 + DB (20 + 60 + 50)
T20 + T10 + D20 (60 + 30 + 40)
129 Out
S19 + T20 + DB (19 + 60 + 50)
128 Out
S18 + T20 + DB (18 + 60 + 50)
T18 + T18 + D10 (54 + 54 + 20)
S18 + T20 + DB (18 + 60 + 50)
127 Out
T20 + 17 + DB (60 + 17 + 50)
S20 + T19 + DB (20 + 57 + 50)
126 Out
T19 + S19 + DB (57 + 19 + 50)
125 Out
DB + T17 + D12 (50 + 51 + 24)
DB + SB + DB (50 + 25 + 50)
T18 + T13 + D16 (54 + 39 + 32)
S18 + T19 + DB (18 + 57 + 50)
124 Out
S20 + T18 + DB (20 + 54 + 50)
T20 - S14 – DB (60 + 14 + 50)
123 Out
T19 + T16 + D9 (57 + 48 + 18)
T19 + S16 + DB (57 + 16 + 50)
S19 + T18 + DB (19 + 54 + 50)
122 Out
T18 + T18 + D7 (54 + 54 + 14)
T18 + S18 + DB (54 + 18 + 50)
121 Out
T20 + T11 + D14 (60 + 33 + 28)
T20 + S11 + DB (60 + 11 + 50)
S20 + T17 + DB (20 + 51 + 50)
119 Out
S19 + T20 + D20 (19 + 60 + 40)
T19 + T12 + D13 (57 + 36 + 26)
T19 + S12 + DB (57 + 12 + 50)
118 Out
S20 + T20 + D19 (20 + 60 + 38)
T18 + S14 + DB (54 + 14 + 50)
117 Out
S20 + T19 + D20 (20 + 57 + 40)
S19 + T20 + D19 (19 + 60 + 38)
116 Out
S20 + T20 + D18 (20 + 60 + 36)
T19 + S19 + D20 (57 + 19 + 40)
S19 + T19 + D20 (19 + 57 + 40)
115 Out
S19 + T20 + D18 (19 + 60 + 36)
114 Out
S20 + T18 + D20 (20 + 54 + 40)
S18 + T20 + D18 (18 + 60 + 36)
113 Out
S20 + T19 + D18 (20 + 57 + 36)
T19 + S16 + D20 (57 + 16 + 40)
S19 + T18 + D20 (19 + 54 + 40)
112 Out
T18 + S18 + D20 (54 + 18 + 40)
T19 + S19 + D18 (57 + 19 + 36)
111 Out
T19 + S14 + D20 (57 + 14 + 40)
110 Out
T17 + S20 + D20 (51 + 20 + 40)
S16 + T18 + D20 (16 + 54 + 40)
109 Out
S19 + T18 + D18 (19 + 54 + 36)
T20 + S17 + D16 (60 + 17 + 32)
S20 + T19 + D16 (20 + 57 + 32)
T19 + S20 + D16 (57 + 20 + 32)
108 Out
T18 + S18 + D18 (54 + 18 + 36)
T20 + S16 + D16 (60 + 16 + 32)
T20 + S8 + D20 (60 + 8 + 40)
S20 + T20 + D14 (20 + 60 + 28)
S20 + T16 + D20 (20 + 48 + 40)
T17 + S17 + D20 (51 + 17 + 40)
107 Out
S20 + T17 + D18 (20 + 51 + 36)
T19 + S18 + D16 (57 + 18 + 32)
S19 + T20 + D14 (19 + 60 + 28)
S19 + T16 + D20 (19 + 48 + 40)

  Tungsten Dart Manufacturer & Supplier: Chinatungsten Online - http://www.chinadart.com/
  Tel.: 86 592 5129696; Fax: 86 592 5129797
  Email:  This email address is being protected from spambots. You need JavaScript enabled to view it.
  Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
  Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
  Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn

Tungsten heavy alloys have very high melting point and have a density twice that of steel and are more than 50% heavier than lead. Due to their high density, tungsten heavy alloys offer greater radiation shielding than lead and are non-toxic. Tungsten alloys are electrically and thermal conductive and offer good corrosion resistance. They also have a low coefficient of expansion and have a high modulus of elasticity.

Because of these unique properties tungsten heavy alloys are used extensively in military applications. The Army uses of powder metallurgy extend from the conventional press and sinter to the more exotic processes of liquid phase sintering of tungsten heavy alloys and powder injection molding. The Navy has taken great advantage of tungsten heavy alloys by employing them in the phalanx close-in weapon system. The Army intends that research will lead to an alloy or composite of tungsten, when used as a long rod penetrator, will perform as well as, or better than, current depleted uranium penetrators. Tungsten heavy alloys are the best choice when designers in defense industries. Tungsten heavy alloys are the ideal material which combines high density, good mechanical strength and which is easily machined, tungsten alloy for military defense is very important.

Tungsten Manufacturer & Supplier: Chinatungsten Online - http://www.chinatungsten.com
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: This email address is being protected from spambots. You need JavaScript enabled to view it.
Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn
 

Angular Contact Tungsten Carbide Ball Bearings: Angular contact tungsten carbide ball bearings use axially asymmetric races. The raceways in the inner and outer rings have a raised shoulder which is displaced with respect to each other in the direction of the bearing axis. (See angular contact tungsten carbide ball bearing photo below).

In simpler terms, this means that these bearings are designed to accommodate combined loads (loads in both the radial and axial directions). The angle of contact is the same on both the inner and outer race. The larger the contact angle, the higher the axial load supported, but the lower the radial load.

In New York Ruling (NY) R04120, dated June 26, 2006, angular contact ball bearings are   defined as “having internal contact angles that generally range between 15-40 degrees and are designed to support both radial and axial loads where the axial load would normally exceed the design limits of a typical radial ball bearing.”

These bearings are found in automobiles, bicycles, turbines, jet engines, dentistry equipment, etc. The ten digit classification is dependent on whether the bearing is used in a wheel hub unit and whether the wheel hub unit is flanged.












 

More infomation about tungsten carbide ball bearing, click here:

http://news.chinatungsten.com/en/tungsten-information/78745-ti-10022
http://news.chinatungsten.com/en/tungsten-information/78750-ti-10023
http://news.chinatungsten.com/en/tungsten-information/78796-ti-10032
http://news.chinatungsten.com/en/tungsten-information/78797-ti-10033
http://news.chinatungsten.com/en/tungsten-information/78843-ti-10039

Tungsten Carbide Manufacturer & Supplier: Chinatungsten Online - http://www.tungsten-carbide.com.cn
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: This email address is being protected from spambots. You need JavaScript enabled to view it.
Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn

Linear Tungsten Carbide Ball Bearings: Linear tungsten carbide ball bearings are ball bearings designed to support loads that move along a straight line, rather than rotating about an axis. Linear tungsten carbide ball bearings usually consist of an outer ring, a ball retainer, balls and two end rings. The tungsten carbide linear ball bearing is designed so that balls roll directly on the surface along which the bearing moves.

These bearings provide increased precision and greater longevity than do simple sliding bearings. They are easy to install or replace and usually require minimum maintenance.

Tungsten carbide linear ball bearings are occasionally referred to as linear guides and are widely used in precision machinery, medical instruments, agricultural equipment and automated production equipment.



















 

More infomation about tungsten carbide ball bearing, click here:

http://news.chinatungsten.com/en/tungsten-information/78745-ti-10022
http://news.chinatungsten.com/en/tungsten-information/78750-ti-10023
http://news.chinatungsten.com/en/tungsten-information/78796-ti-10032
http://news.chinatungsten.com/en/tungsten-information/78797-ti-10033

Tungsten Carbide Manufacturer & Supplier: Chinatungsten Online - http://www.tungsten-carbide.com.cn
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email:  This email address is being protected from spambots. You need JavaScript enabled to view it.
Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn

Know your out chart like the back of your hand!

There are many different combinations of numbers you can use to successfully double-out in an ’01 tungsten dart game.

Legend: S=Single,    D=Double,    T=Triple,    SB=Single Bull,    DB=Double Bull

127 Out
T20 + T17 + D8 (60 + 51 + 16)
126 Out
T19 + T19 + D6 (57 + 57 + 12)
125 Out
SB + T20 + D20 (25 + 60 + 40)
124 Out
T20 + T14 + D11 (60 + 42 + 22)
123 Out
T19 + T14 + D12 (57 + 42 + 24)
122 Out
T20 + T18 + D4 (60 + 54 + 8)
121 Out
T18 + T17 + D8 (54 + 51 + 16)
120 Out
T20 + S20 + D20 (60 + 20 + 40)
119 Out
T19 + T10 + D16 (57 + 30 + 32)
118 Out
T20 + S18 + D20 (60 + 18 + 40)
117 Out
T20 + S17 + D20 (60 + 17 + 40)
116 Out
T20 + S16 + D20 (60 + 16 + 40)
115 Out
T19 + S18 + D20 (57 + 18 + 40)
114 Out
T20 + S14 + D20 (60 + 14 + 40)
113 Out
T20 + S13 + D20 (60 + 13 + 40)
112 Out
T20 + S20 + D16 (60 + 20 + 32)
111 Out
T20 + S19 + D16 (60 + 19 + 32)
110 Out
T20 + S18 + D16 (60 + 18 + 32)
109 Out
S9 + T20 + D20 (9 + 60 + 40)
108 Out
T19 + S19 + D16 (57 + 19 + 32)
107 Out
T20 + S15 + D16 (60 + 15 + 32)
106 Out
T20 + S14 + D16 (60 + 14 + 32)
105 Out
T19 + S8 + D20 (57 + 8 + 40)
104 Out
T18 + S10 + D20 (54 + 10 + 40)
103 Out
T17 + S12 + D20 (51 + 12 + 40)
102 Out
T19 + S13 + D16 (57 + 13 + 32)
101 Out
T17 + S10 + D20 (51 + 10 + 40)
100 Out
T20 + D20 (60 + 40)
99 Out
T19 + S10 + D16 (57 + 10 + 32)
98 Out
T20 + D19 (60 + 38)
97 Out
T19 + D20 (57 + 40)
96 Out
T20 + D18 (60 + 36)
95 Out
T19 + D19 (57 + 38)
94 Out
T18 + D20 (54 + 40)
93 Out
T19 + D18 (57 + 36)
92 Out
T20 + D16 (60 + 32)
91 Out
T17 + D20 (51 + 40)
90 Out
T18 + D18 (54 + 36)
89 Out
T19 + D16 (57 + 32)
88 Out
T16 + D20 (48 + 40)
87 Out
T17 + D18 (51 + 36)
86 Out
T18 + D16 (54 + 32)
85 Out
T15 + D20 (45 + 40)
 

  Tungsten Dart Manufacturer & Supplier: Chinatungsten Online - http://www.chinadart.com/
  Tel.: 86 592 5129696; Fax: 86 592 5129797
  Email:  This email address is being protected from spambots. You need JavaScript enabled to view it.
  Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
  Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
  Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn

(This article is divided into 2 parts, and here is Part 1.For part 2, please refer to:http://news.chinatungsten.com/en/tungsten-information/78808-ti-10037）

----To be continued----

Tungsten Carbide Manufacturer & Supplier: Chinatungsten Online - http://www.tungsten-carbide.com.cn
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email:This email address is being protected from spambots. You need JavaScript enabled to view it.
Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn

Thrust Ball Bearings: A thrust ball bearing, as shown to the right, is a particular type of rotational bearing, and like other rotational bearings, permits rotation between two moving parts. These bearings are comprised of balls and washer like bearing rings. The rings may have flat rolling surfaces with no defined raceway or may have contoured rolling tracks (grooved race or washer) that together with a cage assembly hold the balls in place.

Thrust ball bearings are designed to support axial loads, which are loads applied along the axis of the bearing, as opposed to radial loads, which are applied perpendicular to the axis of the bearing. This type of bearing is found in various items including swivel barstools, turntables, and construction equipment.

Generally, there are three types of thrust bearings: flat-race thrust bearings which consist of flat washers and have a limited load capacity; single-direction thrust bearings, which consist of grooved races and which support axial loads in one direction; and double-direction thrust bearings, which consist of two grooved races and which can accommodate axial loads acting in both directions. Thrust bearings can also incorporate rollers (thrust roller bearings) as a means to reduce friction.

 

More infomation about tungsten carbide ball bearing, click here:

http://news.chinatungsten.com/en/tungsten-information/78745-ti-10022
http://news.chinatungsten.com/en/tungsten-information/78750-ti-10023
http://news.chinatungsten.com/en/tungsten-information/78796-ti-10032

Tungsten Carbide Manufacturer & Supplier: Chinatungsten Online - http://www.tungsten-carbide.com.cn
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email: This email address is being protected from spambots. You need JavaScript enabled to view it.
Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn

There are twomain sections of tungsten carbide ball bearing, one is ball bearings with integral shafts, the other is specifically divided into  thrust bearings, linear bearings, angular contact bearings and the most common ball bearing, the radial bearing.

2. Ball Bearings without Integral Shafts

Unground Ball Bearings: An unground ball bearing is a bearing in which the races have not been subjected to a grinding operation during production. The surfaces of unground   bearings are often formed by stamping or drawing and are usually not subject to the surface   hardening processes to which ground bearings are subjected. Unground bearings are usually of less precision than a ground bearing and are usually distinguished by their dull finish. Unground bearings are often used in bicycles, lawn mowers, shopping carts and other less    demanding applications.



















More infomation about tungsten carbide ball bearing, click here:
 

http://news.chinatungsten.com/en/tungsten-information/78745-ti-10022
http://news.chinatungsten.com/en/tungsten-information/78750-ti-10023

Tungsten Carbide Manufacturer & Supplier: Chinatungsten Online - http://www.tungsten-carbide.com.cn
Tel.: 86 592 5129696; Fax: 86 592 5129797
Email:  This email address is being protected from spambots. You need JavaScript enabled to view it.
Tungsten & Molybdenum Information Bank: http://i.chinatungsten.com
Tungsten News & Tungsten Prices, 3G Version: http://3g.chinatungsten.com
Molybdenum News & Molybdenum Price: http://news.molybdenum.com.cn