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Join Date: Aug 2008
Location: NE Indiana
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Window for Bead-Blast Cabinet

09/22/2008 11:59 AM

Hello All,

At our plant, we use a bead-blast cabinet (glass beads or silica sand is typically used) for general parts-cleaning, maintenance related activities. The window on the cabinet is always prone to being etched by exposure to the media, and you can no longer see through it. The window is made of a piece of acrylic with replaceable film in front of it that we are changing frequently. Can anyone suggest a material to install that would not be prone to being etched (type of glass or plastic), where I would not need to change film all the time? Thanks!

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#1

Re: Window for Bead-Blast Cabinet

09/22/2008 5:33 PM

I think you are completely out of luck unless you can redesign it and use air to deflect the sand or beads away from the plastic that protects the glass--I know how nice it is to get a fresh piece of plastic that you can see through--I think that it is just the price you have to pay for blasting.

Regards.

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#2

Re: Window for Bead-Blast Cabinet

09/22/2008 5:41 PM

Can you change to something less sharp, walnut or pecan shells or plastic beads?

The removable plastic is just a part of the world of blast cabinet maintenance. Check with www.SDplastics.com they know what will live best. Another choice is WWW.USPLASTICS.COM They have many options also.

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#3

Re: Window for Bead-Blast Cabinet

09/22/2008 10:56 PM

I have tried scratch resistant lexan and found it only marginally better than plexiglass. What seems to work fairly well is a layer of screen about an inch from the window. I would try fiberglass widow screen.

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#4

Re: Window for Bead-Blast Cabinet

09/22/2008 10:57 PM

Hello,

As you likely already know, often it is the operator that by holding the nozzle at an incorrect angle for just a second, damages the screen significantly. Assure minimize the side angle of blasting, with the object as far away from the window as possible. The reflected samd has far lessenergy and does less damage.

Depending on the media you are using, you may want to try (on a brand new window) to place a sheet of saran wrap on the window from the inside of course. Likely it will get contaminated quickly, but should save the window to a certain degree. It may attract the dust particles. I say it is be worth a try. Let us know if that works for your media. This may be impractical if you do a lot of blasting.

MG

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#5

Re: Window for Bead-Blast Cabinet

09/23/2008 11:16 AM

Well, it depends on what you are willing to pay here, but the synthetic sapphire windows like those used on better grocery store bar code scanners should hold up to blast media fairly well. I'd still want to put some sacrificial clear plastic liner sheets on it to protect it anyway just to be sure.

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