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Thermal Spray Powder Feeder

Powder Feeders supplied by Airoshot blast are designed for all Thermal Spray applications. Our Feeders have excellent track records in providing high-purity and repeatable powder feed for all coating, welding processes.

It have two types:-

  • Rotating Disk Powder Feeder 
  • Fluidized Bed Powder Feeder

Rotating Disk Powder Feeder 


The rotating disk powder feeder is a name that is rather self-explanatory of how it operates. The main operating component to feed the powder is a rotating disk. The AT 1200 and the PF 700 are both examples of rotating disk powder feeders. The rotating disk has a large number of small holes or slots that rotate in a circle. The hole rotates underneath the hopper that holds the powder.  It rotated to another discharge hole where the powder dropping down into the carrier hose where it is taken to the gun via the powder carrier gas. Some say this type of powder feed arrangement lends itself to the pulsating of the powder because of the barred flow. Others defend it saying that the length of the powder feed hose and the speed of the rotating disc eliminate the pulsation.
The rotating disk powder feeder is simple in design, reliable, and very easy to maintain. The man wear parts are the metal rotating disk, the plastic disk seal, felt the seal. With regular cleaning and preventative maintenance, the rotating disk powder feeders have proven to be reliable for many years.


Fluidized Bed Powder Feeder



The fluidized bed powder feeder design utilizes a portion of the carrier gas that is directed to the bottom of the powder hopper. This back pressure allows the powder to be “fluidized” with the carrier gas. In theory, this allows a more even size distribution and flow of the powder as it is drawn up into the powder pickup shaft. The powder picks up shaft has a converging/diverging internal design that creates a lower pressure inside the pickup shaft that draws the powder into the carrier gas stream and delivers it to the gun. Some say this creates a more continuous feeding of powder with less pulsation.

Even though these powder feeders have a vast array of hoses and pinch valves internally; when properly maintained they are reliable and remain workhorses in many coating shops. The complexity of the plumbing circuit is what draws the most criticism of this style powder feeder.

You will find plenty of opinions as to which is the better powder feeder; both the rotating disk and the fluidized bed powder feeders have been used successfully for many years in the thermal spray industry. I do have to say, the largest single problem I see with any powder feeder is the lack of preventative maintenance. Metal powders are abrasive and aggressive requiring regular cleaning and maintenance.

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Comments

  1. Rohan Bhansali13 January 2020 at 21:11

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  2. Digvijay singh14 January 2020 at 21:20

    Hello, it seems informative to me. Airo Shot Blast- Shot Blasting Machine Manufacturers, portable shot blasting machine price, Sand Blasting Machine for sale, Mini Grit Sandblasting Machine, Tumblast, Small Hanger type machine in Faridabad, Delhi, Pune, Chennai, Mumbai, INDIA.
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  3. manish15 January 2020 at 02:21

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  5. Rahul Sharma1 December 2020 at 02:42

    Great Post,

    Thanks a lot for sharing the great piece of the content with us. The point you mention in your post Fluidized Bed Powder Feeder that are very useful for me.

    We are Manufacturer, Exporter, Supplier of Sand Blasting Machines, Abrasive Sandblasting Machine, Small Grit Sand Blasting Machine Manufacturer, and Shot Blasting Machines. I understand the way of the attractive to the customer with the products.

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    Regards,
    Rahul Sharma.

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