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What is aluminium powder?
Aluminum powder (also known as silver powder) is a silver metallic color. It is produced by adding powder to aluminum foil and crushing it into a scaly powder. Aluminum powder is light, buoyant, concealing, heat-reflective, and has high hiding power. After treatment it can become non-floating Aluminum Powder. Aluminum powder can identify fingerprints, and it can also be used in fireworks. Aluminum powder is a type of metallic pigment due to the wide range of applications, high demand, as well as its variety.
What is the purpose of aluminum powder?
The particles of aluminum powder used in the pigments are scaly. The scaly particles are what give the aluminum powder its metallic colour and shielding effect. Metal aluminum powder is produced industrially since a very long time. Ramming was the early production method. The aluminum crumbs was placed in the groove of punching machine. The machine drove a ramming hammer to continuously punch the aluminum in the groove. The ductile metal gradually shatters and becomes flakes. The aluminum is then screened to remove the powder that is suitable for the product. Ramming produces a low-quality product, is difficult to control, and creates a lot dust, which can easily catch fire and explode.
German Hamtag began producing aluminum powder using a mill in 1894. Steel balls, scrap aluminum and lubricants went into the ballmill, where the scrap aluminum was crushed by the steel balls. This resulted in a scaly, inert aluminum powder that filled the ballmill and pipeline. The method of “dry production” is still being used for gas. J. Hall in the United States developed the method of adding petroleum solvents to the ballmill to replace the inert air. The produced aluminum powder is then mixed with this solvent to create a thick slurry that can be used to make a slurry-based aluminum pigment. It’s easy to use, it’s safe and it works well. This method has been adopted all over the globe. The “wet method” is the method used by most modern aluminum powders. Aluminum powder can also be used for the manufacture of fireworks and explosives. Certain types of electronic devices are also made from it. A lot of paints and sealing agents contain aluminum powder.
Aluminum powder: Is it harmful?
Exposure to fine particles can cause lung scarring (pulmonary fibrosis), which is accompanied with coughing and shortness in breath. Aluminum powder can be a fire-hazard because it is a flammable, solid.
Powder coating has a lower risk of fire than regular paint. Comparing powder/air to solvent/air, the ignition energy is 50-100 time higher. All flammable powders or dusts will, however, form an explosive mix with air. This can be a dangerous situation. Transport, storage, and processing are all safe if the appropriate measures are taken beforehand. To ensure safety, the powder concentrations for the various powders listed above must not exceed 10g/m3. In the spray zone, this concentration often exceeds 10g/m3. There is always sufficient oxygen in the air, so it is essential to avoid sparks with more energy.
Comparing resin powders without pigment, adding 5-6% of aluminum powder increases the “powder constant” (Dust Constant is a measure for explosive power), and the maximum explosion pressure by 10%. As the amount of aluminum powder increases, so will the explosive power. Aluminum powder with a content greater than 25 percent will have the same explosive power as pure metal powder. This dependency on aluminum powder pigments is not responsible for the lowest initiation energy. Pure resin powder will not reach the required initiation energy, no matter what dispersion technique is used. Aluminum powder with a pigment content > 10%, fine particle size, and uncoated aluminium powder can reduce the ignition energy.
Aluminum-containing powder coated coatings are identical to pigmented powder coated coatings. Fire or explosion is not a problem as long they don’t exceed the specified limit.
Aluminum powder must not be separated, accumulated or concentrated in the factory to ensure safety. These requirements are also applicable to solvent-based paints that contain gold and copper powder. The explosion risk directly caused by the copper-zinc powder alloy is lower than that of aluminum.
Aluminium powder characteristics
Aluminum powder suitable for the pigment is the type of aluminum powder with scales. It is also coated on the surface. Aluminum powder paste consists of a pigment, aluminum powder, and solvent. It is used and has similar characteristics to aluminum powder. The output and dosage is larger because it’s easy to use. Comparing to other pigments, the aluminum powder for paints is better in terms of:
1. Scaly coverings have certain characteristics.
Aluminum powder particles are scaly and have a diameter-to-thickness ratio of about (40 to 1) – 100:1. Aluminum powder dispersed on the carrier has the characteristic of laying parallel to the substrate. Several aluminum powders have been connected. The particles are filled together to form a continuous metallic film that covers the surface and reflects light from outside. The uniqueness of aluminum powder lies in its ability to hide. The surface area of the aluminum powder is a function of the diameter-to-thickness ratio. Aluminum is stretched during the grinding process, the diameter-to-thickness ratio continues to increase, and the hiding power also increases.
2. Aluminum powder has shielding properties
The aluminum dispersed in carrier film floats and, as a result, it always forms a parallel layer of aluminum powder on the substrate. These layers are arranged in parallel in the carrier films. The spacing between the layers of aluminum powder prevents the carrier film’s capillary pores from being used. This means that external moisture or gas can not pass through to the substrate. This is due to the physical shielding properties of aluminum powder.
3. Aluminium powder – optical properties
Aluminum powder with high metallic luster and light color. Its smooth surface can reflect between 60%-90% the visible light, UV light, and infrared. The surface of the object is silvery, bright, and coated with a paint that contains aluminum powder. This is the result of aluminum powder reflecting sunlight.
4. Aluminum powder can produce a two-color effect
Aluminum powder exhibits a metallic luster, and is parallel to the coated item. The gloss and color depth change depending on the incident angle and viewing angles of the incident light in the carrier that contains transparent pigments. This is called “two-color” effect. The aluminum powder in the coating is arranged differently in the film. When light strikes each layer of aluminum flake, the film thickness is affected by the light differently. Also, the brightness of the reflected light varies. As light enters a film that contains transparent pigments, it passes through the particles of pigment to become colored and is then reflected by various levels of aluminum. This results in changes of color tone and metal light. This property of aluminum powder is used widely in coatings such as hammer-paint or metallic paint.
5. Aluminium powder with floating properties
The large floating type of aluminum pigments and aluminum powder is characterized as scaly floating over the surface of coating film.
The aluminum powder used to 3D print this fully functional electric bike allows it to be a real motorcycle.
Airbus has entered the 3D motorcycle market. Light Rider, a 3D printed electric bike, is the future for electric cars and 3D printed vehicles.
This 3D bike was launched by APWorks, a subsidiary of Airbus, and was described by them as “corrosion-resistant, combined with lightweight aluminum and almost specific strength titanium.” Scalmalloy – a special alloy for APWorks – is responsible for these qualities. Aluminum powder developed by researchers.
How do you print something so strong as a bicycle using powder? Airbus has explained that Light Rider is made of thousands thin layers with a thickness of 60 microns. Hollow frame adds to the appeal of this 3D printed electric bike. Comparing to other bicycles the frame weight has been reduced by 30%. Joachim Zettler – CEO Airbus APWorks GmbH – explained that this bicycle cannot be made using traditional milling or welding techniques. The team decided on a hollow, branched structure. So, now each Light Rider 3D printed weighs less than 35kg.
Light Rider may seem like a toy but it is incredibly practical. The top speed of the Light Rider is 49m/h, despite not being Harley. The company’s aim is to use 3D Printed electric bicycles mostly for urban driving. Airbus claims the battery of its electric vehicle can travel 37 miles after each charge.
(aka. Technology Co. Ltd., a trusted global chemical supplier and manufacturer with more than 12 years of experience in providing high-quality Nanomaterials and chemicals. Our company is currently developing a number of materials. Aluminum powder produced by us is high-purity, has fine particles and contains low impurities. Send us an e-mail or click the desired products to
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The particles of aluminum powder used in the pigments are scaly. The scaly particles are what give the aluminum powder its metallic colour and shielding effect. Metal aluminum powder is produced industrially since a very long time. Ramming was the early production method. The aluminum crumbs was placed in the groove of punching machine. The machine drove a ramming hammer to continuously punch the aluminum in the groove. The ductile metal gradually shatters and becomes flakes. The aluminum is then screened to remove the powder that is suitable for the product. Ramming produces a low-quality product, is difficult to control, and creates a lot dust, which can easily catch fire and explode.
German Hamtag began producing aluminum powder using a mill in 1894. Steel balls, scrap aluminum and lubricants went into the ballmill, where the scrap aluminum was crushed by the steel balls. This resulted in a scaly, inert aluminum powder that filled the ballmill and pipeline. The method of “dry production” is still being used for gas. J. Hall in the United States developed the method of adding petroleum solvents to the ballmill to replace the inert air. The produced aluminum powder is then mixed with this solvent to create a thick slurry that can be used to make a slurry-based aluminum pigment. It’s easy to use, it’s safe and it works well. This method has been adopted all over the globe. The “wet method” is the method used by most modern aluminum powders. Aluminum powder can also be used for the manufacture of fireworks and explosives. Certain types of electronic devices are also made from it. A lot of paints and sealing agents contain aluminum powder.
Aluminum powder: Is it harmful?
Exposure to fine particles can cause lung scarring (pulmonary fibrosis), which is accompanied with coughing and shortness in breath. Aluminum powder can be a fire-hazard because it is a flammable, solid.
Powder coating has a lower risk of fire than regular paint. Comparing powder/air to solvent/air, the ignition energy is 50-100 time higher. All flammable powders or dusts will, however, form an explosive mix with air. This can be a dangerous situation. Transport, storage, and processing are all safe if the appropriate measures are taken beforehand. To ensure safety, the powder concentrations for the various powders listed above must not exceed 10g/m3. In the spray zone, this concentration often exceeds 10g/m3. There is always sufficient oxygen in the air, so it is essential to avoid sparks with more energy.
Comparing resin powders without pigment, adding 5-6% of aluminum powder increases the “powder constant” (Dust Constant is a measure for explosive power), and the maximum explosion pressure by 10%. As the amount of aluminum powder increases, so will the explosive power. Aluminum powder with a content greater than 25 percent will have the same explosive power as pure metal powder. This dependency on aluminum powder pigments is not responsible for the lowest initiation energy. Pure resin powder will not reach the required initiation energy, no matter what dispersion technique is used. Aluminum powder with a pigment content > 10%, fine particle size, and uncoated aluminium powder can reduce the ignition energy.
Aluminum-containing powder coated coatings are identical to pigmented powder coated coatings. Fire or explosion is not a problem as long they don’t exceed the specified limit.
Aluminum powder must not be separated, accumulated or concentrated in the factory to ensure safety. These requirements are also applicable to solvent-based paints that contain gold and copper powder. The explosion risk directly caused by the copper-zinc powder alloy is lower than that of aluminum.
Aluminum powder suitable for the pigment is the type of aluminum powder with scales. It is also coated on the surface. Aluminum powder paste consists of a pigment, aluminum powder, and solvent. It is used and has similar characteristics to aluminum powder. The output and dosage is larger because it’s easy to use. Comparing to other pigments, the aluminum powder for paints is better in terms of:
1. Scaly coverings have certain characteristics.
Aluminum powder particles are scaly and have a diameter-to-thickness ratio of about (40 to 1) – 100:1. Aluminum powder dispersed on the carrier has the characteristic of laying parallel to the substrate. Several aluminum powders have been connected. The particles are filled together to form a continuous metallic film that covers the surface and reflects light from outside. The uniqueness of aluminum powder lies in its ability to hide. The surface area of the aluminum powder is a function of the diameter-to-thickness ratio. Aluminum is stretched during the grinding process, the diameter-to-thickness ratio continues to increase, and the hiding power also increases.
2. Aluminum powder has shielding properties
The aluminum dispersed in carrier film floats and, as a result, it always forms a parallel layer of aluminum powder on the substrate. These layers are arranged in parallel in the carrier films. The spacing between the layers of aluminum powder prevents the carrier film’s capillary pores from being used. This means that external moisture or gas can not pass through to the substrate. This is due to the physical shielding properties of aluminum powder.
3. Aluminium powder – optical properties
Aluminum powder with high metallic luster and light color. Its smooth surface can reflect between 60%-90% the visible light, UV light, and infrared. The surface of the object is silvery, bright, and coated with a paint that contains aluminum powder. This is the result of aluminum powder reflecting sunlight.
4. Aluminum powder can produce a two-color effect
Aluminum powder exhibits a metallic luster, and is parallel to the coated item. The gloss and color depth change depending on the incident angle and viewing angles of the incident light in the carrier that contains transparent pigments. This is called “two-color” effect. The aluminum powder in the coating is arranged differently in the film. When light strikes each layer of aluminum flake, the film thickness is affected by the light differently. Also, the brightness of the reflected light varies. As light enters a film that contains transparent pigments, it passes through the particles of pigment to become colored and is then reflected by various levels of aluminum. This results in changes of color tone and metal light. This property of aluminum powder is used widely in coatings such as hammer-paint or metallic paint.
5. Aluminium powder with floating properties
The large floating type of aluminum pigments and aluminum powder is characterized as scaly floating over the surface of coating film.
The aluminum powder used to 3D print this fully functional electric bike allows it to be a real motorcycle.
Airbus has entered the 3D motorcycle market. Light Rider, a 3D printed electric bike, is the future for electric cars and 3D printed vehicles.
This 3D bike was launched by APWorks, a subsidiary of Airbus, and was described by them as “corrosion-resistant, combined with lightweight aluminum and almost specific strength titanium.” Scalmalloy – a special alloy for APWorks – is responsible for these qualities. Aluminum powder developed by researchers.
How do you print something so strong as a bicycle using powder? Airbus has explained that Light Rider is made of thousands thin layers with a thickness of 60 microns. Hollow frame adds to the appeal of this 3D printed electric bike. Comparing to other bicycles the frame weight has been reduced by 30%. Joachim Zettler – CEO Airbus APWorks GmbH – explained that this bicycle cannot be made using traditional milling or welding techniques. The team decided on a hollow, branched structure. So, now each Light Rider 3D printed weighs less than 35kg.
Light Rider may seem like a toy but it is incredibly practical. The top speed of the Light Rider is 49m/h, despite not being Harley. The company’s aim is to use 3D Printed electric bicycles mostly for urban driving. Airbus claims the battery of its electric vehicle can travel 37 miles after each charge.