A Primer on Abrasive Blasting for the Custom Coater

Transcription

1 A Primer on Abrasive Blasting for the Custom Coater May 2-3, 2016 What you should know about Abrasive Blasting and Profiles, and more! Chris McKinnon Aegis Industrial Finishing Ltd.

2 What s in it for me? Thank you to PCI for allowing me to participate in this event. Aegis Industrial Finishing started in 2009 Family business with history of metal finishing going back to Opportunity to become leaders in our market with emphasis on service, quality, and education. Fulfill my objective to share what I ve come to learn and hopefully help you in your business in some small way.

3 What s in it for you? Understanding and appreciation of the benefits of abrasive blasting Working knowledge of the equipment required to do it right Safety considerations How to ensure quality Coating performance gains Step in the right direction to see if it is right for you

4 Where are we going today? How to talk to the talk (Standards and Associations) Is it a good fit for your business? Safe Production with Abrasive Blasting Equipment required to do the job (startup equipment, PPE, quality tools) Types of blast media and specific application equipment Demonstrated and repeatable quality Learn from my failures and observations 10 Minutes at end for Q&A

5 Talk the talk Associations NACE (National Association of Corrosion Engineers) SSPC (Society for Protective Coatings) Sa (Swedish Standard) Key terms Deadman Media T-Valve Blast Profile (Peaks and Valleys) Mesh Adhesion Mill Scale Hot Rolled / Cold Rolled Peen vs. Cut

6 Is abrasive blasting a good fit for your facility? Some questions to consider: What does our market require? Do I have the space, power, and air volume? How much am I willing to invest? What size parts do we handle? Who will my competition become? Do we have the technical expertise to be successful? Do we want to grow our business into a new market?

7 Is abrasive blasting a good fit for your facility? Some other options you may consider: Can I partner with a blasting shop to handle the work? Does this limit me from securing the type of business I want to pursue? Quality is critical, but some customers don t require a white metal blast every time. Will a small blast cabinet meet my needs or do I need to invest in a proper blast booth?

8 Safe Production PPE Required N95 paper mask at a minimum Helmet Gloves Coveralls Proper breathing air Silicosis Training of your operator Preventative Maintenance

9 Equipment Required to do the job Compressor Filters Blast Room Clean, dry, and contained Material Handling equipment Overhead crane Forklift Carts Safety Equipment Helmet Gloves Coveralls Steeltoed Footwear Dust masks (for reclaim / moving parts in and out) Dust collector Media Reclaim Disposal method Dust Galvanized media and zinc content

10 Blasting Media Not sand, never ever sand Starblast (staurolite) great multipurpose blast media, uniform shape and size, peens instead of cut. Walnut Shells great for removing paint Aluminum Oxide aggressive media, high cost, angular Steel shot hard, good for steel, peens Copper slag Steel slag cuts Garnet readily available, 2 3 turns, cuts.

11 Repeatable Performance Salt Spray Testing Adhesion Testing

12 Quality Tools o Needle gauge test velocity of air speed in your blast hose o SPG Surface Profile Gauge o Pull off adhesion tester Verification tool for coating bond strength o Tape test w/ Anvil Micrometer Measure blast profile like it s 1979 o VIS-1 Visual Standard Guide NACE/SSPC certified visual guide for degrees of blast cleanliness o Sand paper knock down blast profile when doing single coat

13 Substrates Aluminum Steel Stainless Steel Galvanizied Steel

14 Learn from my mistakes. Grease Light gauge material (oil canning) Welds Shadows Adhesives Multi Metal Blasting Material Handling Pressure differential / blockages / couplers etc

15 Learn from my mistakes. Brush blast on mill scale Bar stock with tears in it

16 Questions? If you are too shy to raise your hand please feel free to talk to me afterwards or contact me at