Tungsten Alloy Shot in Benelli M3

Tungsten alloy shot is made of tungsten alloy. High density, great hardness and resistance to high temperature make tungsten alloy to be one of the most sought -after material for shotgun pellets. Density of tungsten alloy shot is about 18g/cm3. Tungsten alloy shot is used as pellet of Benelli M3.

The Benelli M3 is a dual-mode (both pump-action and semi-automatic) shotgun designed and manufactured by Italian firearms manufacturer Benelli. The M3 holds a maximum of seven rounds and uses the proprietary Benelli semi-automatic system first showcased in the M1. The M3 is notable for allowing the user the choice of semi-automatic or pump-action operation. It is reliable and versatile, and popular with military and police forces as well as civilians.

Using tungsten alloy shot, Benelli M3 can penetrate wall or door and has good performance.



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Multiple Composite Tungsten Electrode String Playing Devices Swaging Process Technology Invention and Technical Background

Multiple composite tungsten electrodes swaging process string playing devices invention relates to multi-composite tungsten electrodes swaging string playing equipment and technology , are rare refractory metal materials processing fields. The present invention is swaged through B203 billet after the B202 stage process that uses three tungsten followed in 1450 ~ 1500 ℃ after Φ6.0-Φ5.6 swaging die machining ; followed in 1400 ~ 1450 ℃ after Φ 5.2-Φ4.8 swaging die machining ; followed in 1400 ~ 1450 ℃ after Φ4.4-Φ4.1 swaging die machining . In B201 processing stage after two times , ie tungsten followed in 1400 ~ 1450 ℃ after Φ3.9-Φ3.6 swaging die machining ; followed in 1350 ~ 1400 ℃ after Φ3.3-Φ3.0 swaging die processing, Following the above process can be obtained Φ6-Φ3 diverse composite rare earth tungsten electrode material . The present invention simplifies the production process , improve production efficiency, while economic energy . 多元复合钨电极 < br />
Multiple composite tungsten electrodes swaging process string playing devices
technical field of the invention
Multiple composite tungsten electrodes swaging string playing equipment and technology , are rare refractory metal materials processing fields.

Multiple composite tungsten electrodes swaging string playing equipment and technology invented technical background

Refractory metals such as tungsten, molybdenum, workability , and thus usually swaging processing methods, namely, rotary hammer rotating at high speed while doing radial reciprocating motion , so that the billet uniform deformation . For tungsten and tungsten alloy processing purposes , often using a single swaging machine head swaging equipment for processing , the original patent ( 200710099090.4 ) , for multiple composite rare earth tungsten electrodes spin -off process that is using this single head the rotary forging machine, multi-composite material of rare earth tungsten electrodes need to go through six stages B202 step, B201 need to go through four stages of process , the process is complicated , labor-intensive , to improve processing efficiency, the two coalition a rotary hammer machine string set is an effective way to play the device , has a similar device is used molybdenum material processing field , and for tungsten , particularly in terms of rare earth doped tungsten material , there are no special equipment such applications , mainly due to the tungsten molybdenum poor machinability performance ratio , especially rare earth doped after rare second phase particles on the material organization of the tungsten material plastic brittle transition temperature changes , and thus for string playing technique , in addition to requirements consistent feed rate In addition, with touch system and the processing temperature is also particularly important .


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Tungsten Alloy Shot in Benelli M1

Tungsten alloy shot is made of tungsten alloy. High density, great hardness and resistance to high temperature make tungsten alloy to be one of the most sought -after material for shotgun pellets. Density of tungsten alloy shot is about 18g/cm3. Tungsten alloy shot is used as pellet of Benelli M1.

The Benelli M1 is a semi-automatic shotgun manufactured by Benelli Armi S.P.A.. It is available in several versions for civilian, law enforcement and military use. It features the proprietary Benelli recoil system, known for its reliability and easy maintenance. The standard model features an aluminum alloy receiver and tubular magazine, and is available with a standard or pistol grip stocks. The M1 Super 90 can be fitted with traditional iron sights, or ghost ring diopter sights. Mounts are available for laser pointers and tactical flashlights. Due to the inertia recoil system, the M1 should use heavier loads to cycle properly but because the action is inertia driven vs. the traditional gas cycling operation it can fire and reliably cycle lighter loads.

Using tungsten alloy shot, Benelli M1 can penetrate wall or door and has good performance.


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Tungsten Alloy Shot in MKA 1919

Tungsten alloy shot is made of tungsten alloy. High density, great hardness and resistance to high temperature make tungsten alloy to be one of the most sought -after material for shotgun pellets. Density of tungsten alloy shot is about 18g/cm3. Tungsten alloy shot is used as pellet of MKA 1919.

MKA 1919 is a gas operated, semi-automatic shotgun that resembles the M16 rifle and mimics the layout and placement of some of the controls. It was created by Turkish company Akdal Arms. The MKA 1919 uses a conventional gas-operated action which is located around the support tube that runs below the barrel. The return spring is also located around the same support tube which is concealed by an enlarged polymer handguard. The MKA 1919 barrel can be quickly removed from upper receiver. To charge the shotgun, the charging handle on the receiver must be pulled. The upper receiver is manufactured from an aluminum alloy while the lower receiver, along with pistol grip and shoulder stock, is manufactured as one piece from impact-resistant polymer. Akdal MKA 1919 semi-automatic shotgun has a 5 round detachable box magazine. It has a bolt release identical in location and function to the one on the M16. Manual safety also duplicates M16-style being located on the left side of the receiver above the pistol grip. Standard sights include a front post installed on the M16-style removable base and a detachable M16A2-style carrying handle with built-in diopter sight. On the upper receiver, an integral Picatinny rail can be placed which will accept detachable carrying handle or optional red-dot or other optical sight attachments.

Using tungsten alloy shot, MKA 1919 can penetrate wall or door and has good performance.



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How to Test If Gold Is Real at Home

Gold is used around the world as a form of money, an investment tool and as jewelry. It is also valued for its beauty, resistance to corrosion and conductivity of electricity. Other materials look like gold but are not as valuable. Fake gold is sold in markets around the world, and it is easy to get fooled. You can do tests at home to know whether your gold is real.

1.Place a magnet next to the item that you think is gold. Pyrite and similar materials will be attracted to a magnet. Gold does not have magnetic qualities and will not be attracted to the magnet.

2.Scrape the item across a porcelain tile in a straight line. If it leaves a black line on the tile, the item is not real gold. If the line is gold colored, the item is probably true gold.

3.Find an item that you are sure is gold and is exactly the same size as the item you are testing. Hold one item in your left hand and the other in your right hand. The items will have the same weight if they are both gold.

 

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How to Test for Real or Fake Gold

Buying gold can be a great long-term investment, as long as you're buying real gold. Gold is a valuable commodity, which attracts people who wish to make some money through counterfeiting. The best way to determine whether your gold is fake is to go to a jewelry store and have it tested, however this may cost you some money. Alternatively, before you venture out to go buy gold, learn a few simple ways of determining whether the gold you're looking at is real or fake.

1.Put the magnet next to the gold. Real gold will not be attracted by the magnet, however fake gold or gold-plated metal will be attracted.

2.Rub the gold with a jewelry cleaning cloth. If the gold is fake, a few hard rubs will remove the plating.
3.Place the gold into sterling silver cleaning solution. After a day, real gold will not oxidize, however plated brass will.

4.Rub face powder onto your arm using a powder pad. Rub the gold against the powder on your skin. If it makes a black mark, it is real gold or gold-plated.

fake gold

 

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The Object to to Provide a Precision Bucking Bar

It is thus an object  to provide a precision bucking bar which will consistently spread a rivet to form a butt of uniform thickness, regardless of operator skill level, and which may be produced in traditional shapes and sizes to accommodate rivets in a variety of installations and to provide a “natural” feel to an experienced operator.

It is a further object of the present invention to provide squeeze points which will produce a properly shaped rivet butt of consistent thickness and shape regardless of operator skill level.

tungsten bucking bar

 

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Precision Bucking Bar Devices

Previous attempts have been made to develop a precision bucking bar which will produce a consistent butt regardless of operator skill. Such bucking devices suffer from a number of limitations. For example, they have universally required a relative large space behind the rivet, a luxury not available in many installations; they have not been available in a variety of geometries to avoid nearby obstacles; and they have not been of a conventional shape or size and thus have not felt familiar to an experienced operator. Hence, prior art precision bucking bars have not been well received in the field.

A second method for spreading a rivet employs an apparatus commonly known as “squeezes.” Squeezes typically include a pair of removable anvils, or points, a first point shaped to receive a rivet head, and a second provides a flat surface to interface the flat end of a rivet shank. To spread a rivet with a pair of squeezes, the rivet must be close enough to the edge of the workpiece for the squeezes to reach the rivet. The rivet is placed in a hole through multiple layers of sheet metal to be joined, the anvils are placed against each end of the rivet, and the operator squeezes the handle together to produce a compressive force between the head of the rivet and the end of the shank, thereby causing the rivet to spread. Automatic squeezes are also available wherein the points are pressed towards each other by a pneumatic or hydraulic actuator. As with driving a rivet, producing a quality butt requires the operator to maintain a consistently square angle between the face of the flat anvil and the rivet shank. Producing a consistent, quality butt requires an experienced operator.

Common to either type of spreading operation, a properly shaped butt of consistent thickness is essential to achieving maximum strength of the riveted joint. An improperly shaped butt may be too weak to hold under expected stresses or may concentrate stress in a small area resulting in failure of the workpiece.

tungsten bucking bar

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Precision Bucking Bar

A precision bucking bar comprising a unitary rigid structure having a bucking surface thereon and a sidewall extending from the bucking surface such that, during a spreading operation, the bucking surface cannot contact the workpiece, thus producing a square butt of uniform thickness and a method for using the same. In another embodiment, the bucking surface is incorporated into a squeeze point for squeezers.

.A precision bucking bar for spreading a rivet through a workpiece comprising: a solid unitary structure having at least a first bucking surface thereon, said bucking surface having a first side wall, wherein said first side wall extends outwardly from said first bucking surface such that, when a rivet is spread, said first side wall will prevent said first bucking surface from contacting the workpiece.

A bucking bar is basically a metal anvil which is placed against the end of the shank of a rivet. Typically, a flat surface of the bucking bar interfaces a flat end of a rivet shank. The head of the rivet is then “hammered” by a driver, thereby causing the shank to spread against the bucking bar. To produce a properly shaped butt of proper thickness, prior art bucking bars have required a skilled operator. Failure of the operator to hold the bucking bar square against the rivet shank will result in misshaped butts and bad rivet resulting in costly rework. Furthermore, prior art bucking bars are prone to wandering during the spreading operation and occasionally wander off the shank, likewise resulting in a bad rivets and subsequent rework.

 

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Tungsten Carbide Powder Typical Applications

1) Machine tools
Tungsten carbide cutting surfaces are often used for machining through materials such as carbon or stainless steel, as well as in situations where other tools would wear away, such as high-quantity production runs. Most of the time, carbide will leave a better finish on the part, and allow faster machining. Carbide tools can also withstand higher temperatures than standard high speed steel tools. The material is usually called cemented carbide, hardmetal or tungsten-carbide cobalt: it is a metal matrix composite where tungsten carbide particles are the aggregate and metallic cobalt serves as the matrix.

2)  Military
a) Tungsten carbide is often used in armor-piercing ammunition, especially where depleted uranium is not available or not politically acceptable. The first use of W2C projectiles occurred in German Luftwaffe tank-hunter squadrons, which used 37 mm autocannon equipped Junkers Ju 87G dive bomber aircraft to destroy Soviet T-34 tanks in World War II. Owing to the limited German reserves of tungsten, W2C material was reserved for making machine tools and small numbers of projectiles for the most elite combat pilots, like Hans-Ulrich Rudel. It is an effective penetrator due to its high hardness value combined with a very high density.

b) Tungsten carbide ammunition can be of the sabot type (a large arrow surrounded by a discarding push cylinder) or a subcaliber ammunition, where copper or other relatively soft material is used to encase the hard penetrating core, the two parts being separated only on impact. The latter is more common in small-caliber arms, while sabots are usually reserved for artillery use.

c) Tungsten carbide is also an effective neutron reflector and as such was used during early investigations into nuclear chain reactions, particularly for weapons. A criticality accident occurred at Los Alamos National Laboratory on 21 August 1945 when Harry K. Daghlian, Jr. accidentally dropped a tungsten carbide brick onto a plutonium sphere, causing the sub-critical mass to go critical with the reflected.


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