Surface Finishing / Shot Blasting

Transmet Cast Shot products are used in surface finishing applications where ferrous contamination and/or damage to parts being shot blasted is a concern. Transmet blast media will significantly lower shot usage, freight expense, inventory cost, dust collection, and shot blasting machine wear.
 
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Cast Zinc Shot

Transmet Cast Zinc Shot is a soft metallic blast media for deburring, deflashing, and surface finishing of light metal castings and other non ferrous products. Cast Zinc Shot has a density closer to stainless steel, giving it the mass to remove heavier flash. The 90 HK hardness of Transmet’s ZA4 Alloy is soft enough that it will not damage delicate castings. The resulting surface finish is very bright and evenly textured.

Transmet Cast Zinc Shot blast media is extremely durable and will outlast stainless steel by 2 times, zinc cut wire by 3 times, and steel shot by 4 times.

Cast Zinc Shot is a good blast media for aluminum die cast, zinc die cast, and magnesium die cast parts. Cast Zinc Shot will not cause galvanic corrosion. If ZA4 Alloy Cast Zinc Shot is too hard, Transmet’s HG Alloy is softer (with a hardness of 60 HK) and suitable for applications requiring a very smooth surface finish.

Aluminum Alternator Frame Shot Blasted With Transmet ZA4 Cast Zinc Shot Blast Media

Alternator Frame finished with Transmet’s ZA4 Cast Zinc Shot.

Transmet Shot casts with a textured surface that forms a strong mechanical bond with resin systems to increase thermal conductivity

Transmet Shot casts with a textured surface that forms a strong mechanical bond with resin systems.

 

Cast Aluminum Shot

Transmet Cast Aluminum Shot blast media is gentle enough to protect delicate gasket surfaces and critical date coding information; yet aggressive enough for deburring, deflashing, and general cleaning of light metal castings and other non ferrous products. It will outlast stainless steel by 2 times. Cast Aluminum Shot is available in 4 sizes; 400, 600, 900, and 1200-micron sizes (1000 micron = 1 mm).

Transmet produces two standard alloys of Aluminum Shot. The 319 alloy is the most popular for blast cleaning. The 100 Knoop hardness (HK) of the 319 alloy shot is similar in hardness to many die cast parts. Blasting with a similar hardness material prevents over blasting of parts, which will damage the part. For extra delicate blasting applications the 2N alloy can be used. The hardness is 25 HK.

Various Die Cast Parts Shot Blasted With Transmet Cast Aluminum Shot Blast Media

Various die cast parts finished with Transmet Cast Aluminum Shot.

Aluminum Die Cast Part Shot Blasted With Transmet Cast Aluminum Shot Blast Media

Aluminum Die Cast part finished with Transmet Cast Aluminum Shot.

 
 
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