New Materials, Non-ferrous materials, Porous metal

Praseodymium Neodymium alloy, Pr-Nd alloy, Pr Nd alloy

2011-02-25T20:40:00.000-08:00

Product name : Praseodymium Neodymium alloy, Pr-Nd alloy, Pr Nd alloy
Item :
Details :
Name: Praseodymium Neodymium alloy, Pr-Nd alloy, Pr Nd alloy

Element: Praseodymium (Pr) Neodymium (Nd)

Content % Maximum
RE
Minimum

PrNd/RE
Minimum

Impurity
C

O

Cl -

Fe

Ca

Mg
99.5

99.9

0.03

0.03

0.01

0.2

0.01

0.01
99

99.5

0.03

0.05

0.01

0.3

0.01

0.01
99

99

0.05

0.05

0.02

0.5

0.01

0.02

We have stock in Europe and Japan.

Please contact us for the best price.

http://sinomaterial.com/html_products/Praseodymium-Neodymium-alloy-Pr-Nd-alloy-Pr-Nd-alloy-200.html

Expo opening ceremony fireworks not pollute the environment is relatively environmentally friendly

2010-05-06T01:22:00.000-07:00

Shanghai Environmental Protection Bureau said today that the Expo opening ceremony fireworks, did not cause environmental pollution.

Zhang full name, according to the environmental protection department of the monitoring data, and calendar New Year's Eve, Shanghai fifth day of the fireworks, firecrackers compared to the situation, although some of the fireworks discharge of pollutants, but not high concentrations of sulfur dioxide, compared to the meager increase in peacetime, Air quality still in "good" within the level.

However, Zhang Quan admits that the next time the wind in the fireworks discharge area, the air particles is indeed increasing, an increase of about 30%, and lasted several hours. Since then, with atmospheric dilution, the air quality in the region to restore compliance.

Zhang Quan said that the whole, the Expo opening ceremony fireworks can be called a "relatively green".

advanced material Replica Rolex life blog seo blog advanced material livejournal blog smartester blog nonferrous material hello world replicas world

This is the news of today, what happend to this world

2010-05-01T09:39:00.000-07:00

At 7:40 on the April 30, Weifang, a man and wounding five students broke into the campus after the self-immolation, Weifang City, Shandong Province Fangzi District 9
Wang Lung Street Shang Village to force villagers into shangzhuang primary schools, with a hammer and wounding five preschool students, and then ignited gasoline
Self-immolation. Wang to be burnt on the spot, five students are currently no life threatening injuries.

At 9:40 on the April 29, Taixing, Jiangsu Taixing Town Centre Nursery vicious stabbing incident, a man armed with a knife
Into the nursery, chopped 32 people, including 29 children, two teachers, a security, of which five were severely injured, there is life
Dangerous. The day before, homicide offenders in Nanping, Fujian Zheng livelihood has just been executed, then broke out in Guangdong Leizhou
Primary knives to injure the event. The face of frequent school massacre, how should we protect children's safety?

Leizhou man chopped 16 students: April 28 afternoon, Leizhou city of the first primary school attack mine incident, 16 students and 1
Teachers were injured, the present no danger. Leizhou initial police investigation, 33-year-old suspect Chen Kangbing
Baisha Town, Department of Leizhou Public school teachers in Hong Fu.

8-year-old man was hacked to death Hepu students: at half past four p.m. on the 12 April about the West Town Primary School in Guangxi Autonomous County, about 400 meters in front of Fat
Health homicide incident, two dead in an 8-year-old primary school, another elderly woman named. 5 injured, including: two primary schools
Health, a child not in school and a middle-aged couples.

Nanping Cheng Minsheng killed eight students: March 23, Cheng Minsheng Fujian Nanping man, killed eight, wounded five students,
Manufacturing Nanping tragedy. At 9 o'clock on the April 28, Zheng was executed livelihood.

All are bad news. God save us!

Main english search engin url submit address

2010-04-29T04:06:00.000-07:00

There are mainly 3 search engins, i.e. google, yahoo and bing.

Google is the biggest one. But at the same time yahoo and bing also bring us a log of traffics for us.

Once you finished a site, you had better submit your url at once. Here is the address.

Google addurl http://www.google.com/addurl.html
Yahoo addurl http://search.yahoo.com/info/submit.html
MSN addurl http://beta.search.msn.com/docs/submit.aspx

Thanks for GFW

2010-04-28T19:16:00.000-07:00

One year gone, finally I found the way to break GFW. Thanks God.

In this year, too many things happend, too many to say.

Now I have too sites on hand, the first is http://www.sinomaterial.com it is a new material and advanced material sites. I feel its target is not clear enough. The modification of the site is on my agenda.

The other is http://www.replica-rolex-replicas-watches.com. It is a site of replica rolex and replica watches. I saw their watches, not bad. I do not know what will happen in the future, but, anyway, the real rolex can not give my any coin. So..........

Many thanks everybody, we are still there.

Many thanks.

Risingtech Advanced Material Supply

2009-08-29T02:16:00.000-07:00

Sell High Density tugsten alloy---Click for more information

Sell Semi solid Aluminum alloy---Click for more information

Sell High Density tugsten alloy

2009-08-29T01:52:00.000-07:00

Sell High Density tugsten alloy

As follow:

GW-1S series
Material: W-Ni-Fe (Cu)
Density: ≥ 18.0g/cm3
Tensile strength: ≥ 780MPa
Elongation: ≥ 3%
Hardness HRC: ≤ 32
Usage: Weight parts and γ, β, χ and other sources for shielding parts

GW-2S series and GW-3S series
Material: W-Ni-Fe-Co
Density: 17.0 ~ 18.0g/cm3
Tensile strength: 980 ~ 1400MPa
Elongation: 10 ~ 25%
Hardness HRC: 28 ~ 36
Usage: Mechanical properties of materials used to demanding components

GF Series
Material: W-Ni-Fe
Density: 17.5 ~ 18.0g/cm3
Tensile strength: ≥ 950MPa
Elongation: ≥ 15%
Hardness HRC: ≤ 32
The material in 3 × 105GY dose of radiation damage under the non-atomic

Special-purpose high density tungsten alloy
W-Ni-Fe (Cu)
Seawater corrosion-resistant, high impact resistance, non-magnetic
Large Marine Clostridium balanced hammer (2-11 tons / month)

According to customer requirements
Golf weight bar, darts, fish and other fall sports

Sell Semi solid Aluminum alloy

2009-08-28T07:55:00.000-07:00

Our company is selling the semi solid aluminum alloy billet and fabricated parts used for car and truck industry. If you are interested in this products, please kindly contact me: huifengchen@foxmail.com or risingtech@hotmail.com .

The following is a brief introduction of the semi solid technology. And at the same time we are also dealing with the semi solid magnium alloy.

Good luck!

First, the definition of semi-solid metal forming
In the metal solidification process, to impose their violent agitation or disturbance, or change the thermal state of metal, or by adding grain refiner, or rapid solidification, that is, to change the primary solid phase nucleation and growth process, to be of a liquid metal mother liquid evenly suspended in a certain globular primary phase solid-liquid mixture slurry, using the solid-liquid mixture slurry forming directly, or first complete solid slurry of this solid-liquid mixture into the billets, according to segmentation needs to be blank, and then re-heated billet cut points to the solid-liquid two-phase areas, the use of such semi-solid billets for forming, these two methods are called semi-solid metal forming.

Second, semi-solid metal preparation method
Since the 70s of last century, researchers at home and abroad aluminum alloy, magnesium alloy, copper alloy semi-solid processing methods to a more adequate research, have developed a variety of different features of the semi-solid preparation methods.

1, mechanical mixing method

This method was the earliest method used by the U.S. Massachusetts Institute of Technology Flemings and others were developed in the early 70s. The working principle is: in the mixing chamber liquid metal solidification process, using a strong mixing stirring rods to fully break the already solidified dendritic crystals, and thus the formation of granular solid phase uniformly distributed in the liquid phase of the non-dendrite semi-solid slurry. This method is a complex device structure, high cost, yield little, so this method only applies to laboratory studies.

2, electromagnetic stirring method
This method is the use of force to enable the exchange of electromagnetic induction metal mixing room is freezing the flow of a dramatic, constantly led to precipitation of dendritic solidification fully broken and the ball, and then to form a granular solid phase uniformly distributed in the liquid phase of the non-dendritic semi-solid slurry. This method is not easily involved in the gas, non-polluting liquid metal, metal slurry pure, continuous production of semi-solid slurry, the output can be large, which is the production of aluminum slurry, one of the main method.

3, strain Activation Method
Variable activation method is pre-continuous casting of metal ingots out of a fine grain size, and then squeezing deformation of metal ingots, and the deformation must be large enough to press the need for deformation of metal ingots cut into a certain size, and then heated to the solid-liquid zone, in the heating occurred during the recovery and recrystallization, so that grain refinement and thus part of the grain boundary melting, solid-liquid two-phase coexistence are semi-solid metal slurry. The method of production of metal ingots pure, large output, but the addition of a pre-deformation process, so that production costs increase. At the same time the Act can only be used for the production of small parts, application limited in scope.

Thirdly, the characteristics of semi-solid processing technology and scope of application
To sum up, semi-solid processing technology has the following characteristics:
(1) SSM filling a smooth, no turbulence, and splash, the temperature low and the release of some of the latent heat of crystallization, thereby reducing mold on the forming equipment, especially the thermal shock, so that life expectancy has increased significantly; the same time, SSM coagulation time, to the benefit of increased productivity
(2) SSM forming the surface is smooth; internal organization of the dense, fine grain size, mechanical properties, high; solidification shrinkage is small, and thus casting size and high precision; SSM formed parts is almost the same size and finished parts, greatly reducing the amount of mechanical processing, can do little or no machining, thus saving resources, relatively longer tool life.
(3) does not deal directly with the liquid metal, easy to automate and improve the working conditions.
(4) to save energy. Per unit weight than ordinary aluminum alloy castings saving about 35%.
(5) SSM viscosity can be evenly mixed with particles or short fiber reinforced materials and the manufacture of metal matrix composites, as an effective metal matrix composite material manufacturing methods.
(6), compared with the solid metal forging, SSM flow stress significantly reduced, thus forming higher-speed SSM forging, but also forming a very complex parts. Semi-solid processing technology In addition to these direct forming, but also is expected to purify metals (to make 3SM liquid-solid two-phase separation), manufacture of metal plate belt. In particular, semi-solid processing technology manufacturing metal matrix composite materials become more and more attention. With the continuous research and development, semi-solid processing technology will exceed the scope of today's industrial applications. SSM applicable to solid-liquid coexistence region alloy system. Research and production that is suitable for semi-solid processing of metals: magnesium alloy, aluminum alloy, zinc alloy, nickel alloy, copper alloy and steel alloy, etc., of which Al-Mg alloy has been used in industrial production. Semi-solid processing technology has the potential to achieve the casting of ferrous metals, many countries are committed to research in this area.

The fourth, semi-solid alloy forming method
1. Rheo-cast (Rheoforming, Rheocast)
Liquid metal cooling from liquid to solid-phase carried out during the strong stirring, to a certain solid fraction, the directly obtained semi-solid metal slurry casting or extrusion. R. Shibata, and others, such as will be used have been prepared by the method of electromagnetic stirring semi-solid alloy slurry directly into the forming chamber die casting machine shot. The way of producing the mechanical properties of aluminum alloy castings higher than the squeeze casting, and the performance of semi-solid thixotropic casting considerable. The problem is the preservation of semi-solid metal slurry and transportation more difficult, so much the actual input applied.

2. Thixotropic casting (Thixoforming, Thixocast)
Will have been prepared by non-dendritic ingot re-heated to a solid-liquid two-phase region is appropriate to the viscosity was conducted after the die-casting or extrusion. U.S. EOPCO, HPM Corp., Prince Machine, THT Presses, as well as the Swiss company Buhler, Italy IDRA USA, Italpresse of America, Canada, Producer USA, Japan, Toshib a Machine Corp and UBE Machinery Services, etc. have been able to produce semi - Solid aluminum Thixoforming special equipment. The method of billet heating, transport and easy to implement automated, it is currently the main process of semi-solid casting method.

3. Radio cast form (Injection Molding)
Directly to the molten metal liquid, rather than after treatment of semi-solid slurry cooled to proper temperature, and supplemented by a certain pressure injected into the cavity forming process conditions. Such as the United States of Thixoforming Development Center of Wisconsin has been using the method of semi-solid casting of magnesium alloy. KKWang Cornell University professor who developed a similar shoot-casting magnesium alloy devices will be semi-solid slurry from the feed tube to join, after appropriate cooling pressure injected into the cavity.

4. Low Temperature Casting
The so-called low-temperature casting is to control the superheat of liquid metal around at 0 ℃, and below the mandatory cooling mold casting method, as shown in Figure 4. Center Segregation is a big problem in the casting, and in the rolling wire breakage may occur. Therefore, the process was very significant.

5. Strip casting
Flemings has used Sn-15% pb low melting point metals strip casting pilot study on the heat transfer, solidification and deformation are analyzed. That the strip thickness and the pressure roller, solid Fraction, rheological shear rate as well as the speed of the casting. When squeezed than the pressure is large, then the fuel microsegregation. In order to ensure the surface and internal quality and dimensional accuracy, we must strictly control the solid-Fraction, initial crystal size and shape of metal emissions from the amount of semi-solid metal fabrication and other process parameters.

The fifth, Industrial Application Status

1, semi-solid application status
In recent years, the semi-solid processing technology for industrial applications has made great progress. In which the United States, Japan, Britain, France, Italy and Switzerland and other countries in the application level in the leading position. In the United States, AlumaX Engineered Metal Process (AEMP) has pioneered this technology into productive forces. In 1978, it is for the use of MHD technology to produce a thixotropic forming ingot used, and then built the world's first high capacity and highly automated production lines Thixoforming for the production of aluminum 'alloy automobile parts, and has more than 60 related patents items; since 1988, AEMP for the Bendix brand cars produced 2.5 million aluminum cylinder heads (Master Cylin-der), for the Ford Motor Company produced 15 million aluminum alloy compressor piston (Pistons of Compressor), finished the rate of nearly 100%. 1992 AEMP a joint venture with Superior Industries in the U.S. state of Arkansas built the world's first aluminum wheel plant Thixoforming. AEMP helps AMP Inc. building in the United States there are seven sets of semi-solid forming system of the plant was put into operation during the first half of 1993 for the production of aluminum alloy electrical components. Thixoma companies the use of semi-solid injection molding of proprietary technology to produce magnesium alloy parts. ITT's semi-solid processing technology the production of brass electrical connectors. At present, Alumax Aluminum Company of Mt Holly and the Intalco aluminum smelter has been produced of the MHD diameter of 76.2mm and 152.4mm spindle. In 1985, Alumax Aluminum Company Thixoforming relevant to the European patent technology transfer, production of Volvo, BMW and Audi cars such as aluminum alloy parts. In Europe, Italy is the semi-solid processing technology commercial application, one of the earliest countries. Stampal-Saa companies use this technology for Ford Motor Company produced Zeta engine fuel injection block (Fuel Rails), production rate 160 / hour; In addition, production of gear Cover (GearBoxCover) and the rocker arm (RockerArms) and other parts. Weber started the company in 1993 as a semi-solid-state technology company Nuova Lancia Delta fuel injection block. Buehler, Switzerland in 1993, the company developed called the SC semi-solid die-casting equipment, and started the production of car parts. At the same time, Germany's EFU, France PechineySA, Switzerland, Alusuisse-Lonza, Italy's Fiat and other internationally renowned companies have already adopted a semi-solid processing techniques. Japan in the late '80s formed by a 18 member Rheotech companies, followed by pairs of semi-solid processing technology to conduct systematic research with the United States and Europe while strengthening the link leading universities and companies. Members of the company include: Mitsubishi Heavy Industries, Kawasaki Steel, Kobe Steel, Furukawa Electric, 14 steel companies and four non-ferrous metals companies. In March 1988 to June 1994 a total of 3 billion yen investment in research and development, the next step to industrial application stage.

Semi-solid metal processing technology in China started late, began in the late 20th century, 70. Many research institutes have carried out research in this area, but they are mostly carried out by mechanical mixing method casting and thixotropic casting rheological studies. The 20th century, late 80's, most scholars began to engage in semi-solid composite materials and small parts used in automotive research. In recent years, major national fund projects with the support of scientific research workers to semi-solid processing of key technology breakthrough research. Beijing Nonferrous Metal Research Institute at the national "863", supported by pairs of semi-solid aluminum alloy processing technology to conduct breakthrough research, to design a semi-solid material preparation test line, production capacity of 300 tons / year in 1998 October achieve continuous rheology of semi-solid aluminum alloy casting, in recent years, the hospital actively with the business cooperation, it has already mass production of a variety of automotive aluminum alloy semi-solid parts.

2, semi-solid forming pieces of the status quo
Semi-solid processing technology is mainly used in auto parts manufacturing, In addition, in the military, aerospace, electronics and consumer goods, it is also carried out product development. In most cases aluminum, magnesium alloy semi-solid die casting, forging and injection molding. Semi-solid processing technology to produce automotive components include: brake actuator (Master Brake Cylinder), steering system parts (Steering and Suspension System Components), Rocker (Rock Arm), the engine piston (Engine Piston), Hub (Wheel) , Transmission System Parts (Transmision Components), fuel system parts (Fuel System Components) and automotive air conditioning parts (Air Conditioner Components) and so on. These parts have been applied to Ford, Chry51er, Volvo, BMW, Fiat and Audi brand cars such as Europe and the United States on the. From 1981 onwards, using semi-solid state technology to produce the electrical connectors (ElectricalConnector) have been applied to the field of military aviation. As mentioned earlier, compared with the casting, SSM aluminum alloy pieces of the organization small, internal loose less, shrink small, dimensional accuracy and high-performance, surface quality, good; In addition, because little or no machining, thus reducing manufacturing costs. Thus, in production, some of SSM aluminum alloy castings and forgings used to replace conventional. For example, the timing belt tensioner back wheel bracket (Timing-Belt Tensioner-pulley Pivot Bracket) changed from ductile iron SSM aluminum alloy, the weight loss 52% cost savings 2.15 U.S. dollars per piece. Automotive actuator Jane usually cast iron, cars tend to use lightweight aluminum alloy metal casting process, the application of semi-solid processing technology, as compared with the previous two kinds of processes, not only produce a high degree of automation to avoid when dealing with liquid metal forming, but also achieved a near net shape (Near Net Shape) manufacturer. Semi-solid mold according to the weight of aluminum alloy car wheels, with different types of die-casting wheel than the corresponding light-lO% -30%. Thixomat the company in July 1994 Thixoforming devices using aluminum gearbox production, has so far produced the 50 million pieces. Equipment using hot chamber die-casting process, production time per piece for the 28s, Nissan 6000. After the entire production process monitoring shows that the average weight of each deviation of 0.5%, hole size precision of 0.02, set in the embedded steel liner to the hole just before the surface can be polished. In addition, thixotropic forming process used to produce the formed parts used in electronics, such as industrial electronic display devices, such as the fuselage.