Showing Tag: "bronze" (Show all posts)

The weathering research of metal powder coatings

Posted by tracy ma on Monday, July 9, 2012, In : metal powder 

With the rapid development of national economy, metal powder coatings are increasingly applied in outdoor. As a protective and decorative powder coating, its weather resistance and durability has also aroused more and more attention, especially for the coating of ceiling, wall panels, drinking fountains, air conditioners, washing machines and aluminum. They will have a series of changes in natural environment. Its specific performances are glossy declining of bronze powder (FCu 663), dim colo...


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Classification and application of bronze powder

Posted by tracy ma on Wednesday, July 4, 2012, In : metal powder 

Bronze powder’s raw material is copper-zinc alloy. It is a metallic pigment with scaly structure, floating performance in bonding compound, gold luster and pigment nature.  It is produced in special machining and surface chemistry. The bronze powder is a metallic pigment. If the gold oil or vanish are added in bronze powder (FCu 663), the colorful gold oil and gold lacquer will form. It is widely used in the printing, textile, printing, construction, decoration, craft jewelry, metal sculptu...


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Advantages of pre alloyed powder as the bit matrix

Posted by tracy ma on Friday, June 29, 2012, In : metal powder 

Pre-alloy powder can be used as the binder of bit matrix. Compared with single metal powder in mechanical mixture, its superiority is reflected in the following areas: mechanical properties, the holding force of matrix alloy on diamond, oxidation and dirty of metal powder.

If the bonding metal is made of pre-alloy, the pre-alloy powder has a single melting point; its melting point can be controlled by adjusting the composition formula proportion and choice. Pre-alloyed powder than mechanical...


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It is a long journey for Chinese copper powder to achieve internationalization

Posted by tracy ma on Monday, June 18, 2012, In : metal powder 

In recent years, Chinese copper powder industry has undergone earth-shaking changes and achieved gratifying results. The technology level of Chinese copper powder has been greatly improved each year. The growth rate of productivity ranks head in the world. The market share also has a large-scale expansion. Thus, some industry insiders are optimistic that the Chinese copper powder begins to reach international standards. In fact, they are too optimistic.

It should be soberly aware that compar...


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Production of atomized bronze powder

Posted by tracy ma on Thursday, May 31, 2012, In : metal powder 

Bronze powder is an important raw material for the production and use of powder metallurgy. International production of bronze powder began at 20 century. The production methods used at that time are restoring copper oxidation and electrolysis. After 1950s, there are new production methods for bronze powder: replacement precipitation and hydrometallurgy method. Then the atomization method emerges.

In 1958 China began the process of bronze powder (FCu 663). The production time of bronze powde...


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Dispersion and preservation of bronze powder

Posted by tracy ma on Thursday, May 24, 2012, In : metal powder 

Usually, the standard bronze powder has good floating performance. It is not necessary to add a wetting agent or dispersing agent. It will reduce its floating performance. For specifically adjusting the floating properties of bronze powder (FCu 663), it can appropriately reduce its floating. But this will reduce the metal effect.

Through theadjustment of application viscosity and drying time to obtain the desired optical effect, the pigment particles is not a good alignment. It can add a var...


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Nano nickel oxide powder

Posted by tracy ma on Tuesday, May 22, 2012, In : metal powder 

Nano nickel oxide powders are good catalysts for the oxidation. Ni 2 + owns a 3D orbit. It has a preferred adsorption for multi-electron oxygen. It can active other reducing gas and catalyze O2 of reducing gas. In the decomposition of organic matter synthesis and the conversion process, such as gasoline hydrogenation cracking, hydrocarbons transformation in petrochemical treatment and the process of heavy oil hydrogenated, NiO becomes a good catalyst.

In the catalytic combustion of natural g...


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Sodium silicate and silica fume

Posted by tracy ma on Thursday, May 17, 2012, In : metal powder 

Water-glass is a combination of alkali metal silica and alkali metal oxides. It is also called as the sodium silicate. The type of the alkali metals can be divided in sodium and potassium silicate, sodium silicate. The formulas are Na2O.nSiO2 and K2O.nSiOz. N is called as water glass modulus. It is the ratio of silicon oxide and alkali metal oxide molecules in the water glass.

Silicon powder, sodium silicate measure important parameters, sodium, generally in the range of 3.5 to 1.5. , The fo...


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Outlook of silicon carbide powders

Posted by tracy ma on Tuesday, May 15, 2012, In : metal powder 

Silicon carbide powders are finally ready to move grinding dust by JZFZ machines. at present, silicon carbide powders are, about 1200# and 1500#. Silicon carbide powder has been used in the abrasives industry. There are special classifications for size od silicon carbide powders. No large sized silicon powder is allowed in microsilicion powder. According to requirement from international and domestic market, people often use JZF production equipment to make accurate classification. Silicon ca...


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Problems in copper powder preparation

Posted by tracy ma on Monday, May 14, 2012, In : metal powder 

There are many different problems in the preparation of copper powders. It can be reduced to three areas. It affects the quality of copper powder, the market and competitiveness of Chinese products. Thus, for industrial production of copper powder, to understand the problems are an important task.

First, the problem of raw materials. It results in poor material base provides. Later, when the distribution is required. This problem is most metal powder suppliers of copper powder are not paying e...


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Supply and quality standards of silicon powder

Posted by tracy ma on Friday, May 11, 2012, In : metal powder 

Silica fume is fine particles from cooling high SiO2 of submerged arc furnace in ferrosilicon or silicon metal production process. The silica fume is filtered and collected by collector. General micro-silica fume’s color is between light gray and dark gray. Its color depends on the carbon and iron oxide content. The higher the carbon content is, the darker the color will become. Color of encryption silica fume is darker than color of natural silica fume.

Fumed silica particles in the diffusi...


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Analysis of micron copper powder’s oxidation stability

Posted by tracy ma on Thursday, May 10, 2012, In : metal powder 

When the temperature increases, the copper powder’s weight increases, and raising amplitude of weight is larger. It indicates that the copper powder has poor oxidation resistance. Reason for weight increasing is that the surface of copper atoms generates copper oxides t with oxygen in the air. Due to the weak oxidation resistance under such high temperature, it greatly limits the application of copper powder.

Without the need for the preparation of copper and silver metal powder, silver powd...


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For preparation of ultrafine nickel powder though ethanol water system

Posted by tracy ma on Tuesday, May 8, 2012, In : metal powder 

Ultra-fine nickel powders with different morphologies and sizes are synthesized in ethanol water solution by liquid phase reduction method. The well-defined ultra-fine nickel powders are prepared by changing the concentration of aqueous solution of nickel salt and sodium hydroxide, or by changing the mole ratio between reactants and the reaction temperature. Under the conditions that copper sulfate as a nucleating agent, citric acid as a complexing agent, sodium tartrate as a dispersant, ultr...


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Notes of using bronze powder

Posted by tracy ma on Monday, May 7, 2012, In : metal powder 

Bronze powder is a floating flake pigment. With a certain proportion of copper, zinc and aluminum alloy in melt milling, it meets to required specifications. Bronze powder’s colors are: red and gold, green gold, green and red gold, bronze gold and so on. More coarse the bronze powder is, the stronger the sense of metal will be. And it becomes more flashing and brightness. If it is finer, sense of metal reduced, the color is gentler and hiding function is better.

Copper powder, with stirring,...


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The use of nano nickel powders

Posted by tracy ma on Friday, May 4, 2012, In : metal powder 

Nano-nickel powder can be used in the conducting paste. The nickel electronic pulp getting from50-nanometer-sized nickel powder can be sintered only 0.6 microns thick electrodes. It produces 1000 or more layers of MLCC and makes MLCC device miniaturization. The optimization of microelectronic technology instead of silver palladium and other precious metals electronic slurry can substantially reduce costs.

Nano-nickel powder can be used for hydrogenation reactions treatment of organic compo...


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Application of silica fume in steel fiber jet concrete

Posted by tracy ma on Wednesday, May 2, 2012, In : metal powder 

At present, micro-silica fume is used for high strength concrete (HSC) in the worldwide. Generally it is more than 80MPa. But its first application in engineering was attributed to the tunnel. In the1970s and the 1980, with the silica fume and concrete mixture standards promulgated by Northern Europe and North America, the research and application of silica fume have rapid developments in worldwide.

Silica fume is to filter out the smoke of a furnace gas contains a large number of small amor...


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Reinforcing part of silica fume in concrete patching compound

Posted by tracy ma on Friday, April 27, 2012, In : metal powder 

Roads of metallurgical enterprises have a large number of reinforced concrete structures. Within these plants, every day they need to complete a lot of raw material and fuel transport, lifting and storage. And the transshipment, lifting, storage of these original fuel needs support from concrete structures. Daily load of the concrete structure is great. It inevitably causes the damages in transporting, loading, storage of raw material and fuel. Once surface of the reinforced concrete structur...


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Nickel and tin metal powder’s sintering properties

Posted by tracy ma on Wednesday, April 25, 2012, In : metal powder 

In recent years, powder metallurgy technique has become the world's fastest growing technology. Ni-Sn alloy has been a lot of modern industrial production, the Ni-Sn coating due to the appearance of a black coating and often gwynlliog color or black and white pearl coating. The nickel-tin alloy powder of the sintering characteristics of penetration of dust, by changing the sintering temperature and residence time. It forms nickel-tin intermetallic compounds at a suitable temperature and press...


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Industrial production of nano-nickel powder

Posted by tracy ma on Tuesday, April 24, 2012, In : metal powder 

In the international market, mass production methods of nickel powder are nano-chemical vapor deposition, nickel carbonyl nickel powder composition and density evaporation method. These methods require complex production equipment, the high cost of nano-powders of nickel. In the international market, the price is 1200 dollars in one kilogram. Laboratory preparation of nano-sized nickel powder requires the entire cost of $ 2,000 per kilogram, and the particle size is difficult to control and d...


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Production and market of copper powder and copper alloy powder

Posted by tracy ma on Wednesday, April 18, 2012, In : metal powder 

Foreign industrial copper powder production began in the 1920s. At that time, the main production processes are electrolysis and oxidation-reduction method. After 1950s, the replacement precipitation, water treatment method and atomization production process emerge. In 1958, China began production experiments of electrolytic copper powder. They got success in the mid-1960s. At present, China's copper powder (FCu) production processes are electrolysis, atomization and the reduction method.

P...


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Measurement of silica fume’s mobility

Posted by tracy ma on Tuesday, April 17, 2012, In : metal powder 

Mobility of silica fume is related with silicon content, but it is out of the proportion. For the same kind of silica fumes, some have good liquidity, while some simply do not have the liquidity. For testing, the dispersant must be added. If trimeric sodium phosphate does not work, P530 is available. If both of them do not work, the silicon powder can not be used in the refractory industry.

Simple approach can be used without encryption silica fume, 40 g water, 60 g of silica fume and 0.2 g...


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Discussion of nickel cobalt alloy powder’s application prospects

Posted by tracy ma on Thursday, April 12, 2012, In : metal powder 

With the rapid development of science and technology, people have different requirements for materials. Ultrafine particles have small size effect and surface effect. It aroused the interest of many researchers in a long time. The grain size is small and uniform, with low reunion, large surface area and high chemical activity. It provides a broad prospect for the development of new materials. Because Ni-Co alloy powder has special properties and special surface magnetic those are different fr...


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Price analysis of manganese powder

Posted by tracy ma on Tuesday, April 10, 2012, In : metal powder 

In order to obtain a greater investment return, Chinese companies have increased the scale of production and product quality. But from the international financial crisis, deteriorated exterior policy environment, raw material prices of upstream and downstream shrinking demand and many other adverse factors, they make the market conditions and price trends of manganese powder industry in 2012 win much concern. In 2010, Chinese manganese industry is developing rapidly and the Chinese manganese ...


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Experience and summary of silica fume use

Posted by tracy ma on Thursday, March 29, 2012, In : metal powder 

Silica fume particles mixed with cement concrete can increase the concrete mixing tough soft sticky cohesion and hardened concrete fill density. It has significant ultrafine aggregate effect. In sharp condensation of gas, liquid and solid phase change process, silica fume’s formation is varied with large and small. The spherical particles with smooth surface will play the role of frictional resistance within the particles in the cement concrete. It will help spread the filling micro pores a...


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High value-added boron carbide powder and its preparation technology

Posted by tracy ma on Wednesday, March 28, 2012, In : metal powder 

The industrialization of high value-added boron carbide materials focus on the industrialization of the boron carbide ultrafine powders and high-performance boron carbide ceramics and realizes boron carbide ultrafine powders’ scale production and application. It will break through the monopoly foreign technology of large size, complex shape in carbon boron chest plate. Great progress has been made and after the milling of boron carbide coarse powder, the median size is about 1 micron. The c...


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Silica fume and its use

Posted by tracy ma on Friday, March 23, 2012, In : metal powder 

The powder is industrial dust from themolten ferro silicon, silicon-industrial scrubbing flue gases. China's ferro-silicon is the world's largest manufacturer of silicon-industrial. The latent resources of fumed silica in China reached more than 150,000 tons per year. In the early forties and fifties of 20th century, abroad countries have studied on the use of silica fume. Silica fume has been used extensively in many areas.

Fully closed electric furnace ferrosilicon generally wet flue gas...


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Silica fume concrete’s demonstration in hydropower projects

Posted by tracy ma on Wednesday, March 21, 2012, In : metal powder 

Comparing with ordinary concrete, silica fume concrete has high strength and durability. But because of its water-cement ratio, cement content and bleeding difficultly, thus it is much easier to have plastic shrinkage than ordinary concrete. The early drying shrinkage and volume deformation is also greater than ordinary concrete. These intertwined factors result in early cracking technical problems in silica fume concrete construction.

Means to reduce the burden of the thermostat temperature...


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Applications of metal powder paints

Posted by tracy ma on Tuesday, March 20, 2012, In : metal powder 

The metal powder coating market is a very widely from automotive to toys, mechanical pencil. The electronics industry, to avoid the use of solvent containing, begins to use the color powder coating. The metal powder coating of the most successful commercial application of the principal market is as follows:

Because of reasons of quality, cost and environmentally friendly, the application of powder coatings in the automotive industry is growing. Who needs special protection resources decor it...


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The application of silica fume in refractory industry

Posted by tracy ma on Friday, March 16, 2012, In : metal powder 

Silica fume is a new raw material. There is more than 40 years’ history for it using in refractory improvement. It is widespread used in the refractory industry. Silica fume have an important role in the improvement of unshaped refractories. It mainly improves the strength. There are numerous pores in traditional refractories. Silica fume can significantly improve the strength of traditional refractories, bulk density and lower porosity filling the pores. Silicon powder improves the casting...


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Application of copper powder metallurgy products

Posted by tracy ma on Thursday, March 15, 2012, In : metal powder 

Copper powder can be produced though the water atomization, gas atomization process and the oxidation-reduction method. And its shape is spherical or irregular shape. Physical properties of atomized powder (such as: bulk density, mobility, particle size and green strength) is related with the process conditions, such as: specific additives, melting temperature, atomization pressure, the reduction temperature and post-processing of powder. Redox median diameter of powder through oxidation redu...


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The breakthrough of automotive parts dilemma situation is relate with powder metallurgy technology

Posted by tracy ma on Wednesday, March 14, 2012, In : metal powder 

The capability of independent innovation of China’s auto parts enterprises is still weak. The patent application is still in its infancy and the brand value of China's auto parts is low. Part product’s systematic and modular level is not high. And with the unreasonable product structure, the development of current parts industry has lagged far behind the automotive industry. Such as engine parts connecting rod and camshaft have lag technologies. They also affect the rapid development of a...


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Property and application of high purity boron powder

Posted by tracy ma on Tuesday, March 13, 2012, In : metal powder 

The high-energy boron fuel propellant is the first ammunition choice in new generation long-range air-to-air missile ramjet engine. It can meet the high-speed, remote and small size and the performance requirements for air to air missiles. At present, though coating, adhesives, reunion and other methods, China solves the technology problem of low-purity boron powder application in the fuel-rich propellant. But the amount of coating boron powder is limited in propellant and particle control te...


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The development of silica fume market

Posted by tracy ma on Monday, March 12, 2012, In : metal powder 

Silica fumes are relatively unfamiliar for Chinese people. But if talking about its use, it is a cornucopia to be developed. Development and utilization of foreign micro-silica fume has a 40-year history. The comprehensive utilization of silica fumes only has10 year’s history. The main use of the silica fume is in the field of refractories and concrete. The refractory only confines to the amorphous part. In recent years, with the gradually promotion, micro-silica fume is applied in the proj...


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R & D of Chinese titanium powder technology gets remarkable achievements

Posted by tracy ma on Friday, March 2, 2012, In : metal powder 

With the rapid development of science and technology in recent years, more and more titanium and titanium alloy powder is widely used in various high-tech fields, industrial production and people's lives. The international demand is also growing. The market prospects are very broad. Especially the United States and Japan has constant growth in demand for titanium. Chinese titanium annual demand is about 2.5 to 3 million tons and Chinese annual titanium production is only 1,500 to 2,000 tons. ...


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