Abrasive Blasting also known as grit blasting, is an important form of surface treatment required to clean part surfaces and to provide an etch to assist with the mechanical bond of thermal spray coatings to the substrate. This process involves firing abrasive particles through a nozzle using compressed air. The particles range in coarseness from fine to very coarse and can consist of aluminum oxide, metallic, or glass beads. Grit blasting is required prior to any thermal spray coating being applied.
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Product Recommendations – Abrasive Blasting
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6605-07D – Basic single sided glass cloth tape suitable for non-critical Abrasive Blasting masking. A good choice for single layer secondary masking.
6615-07 – Double sided fiberglass tape, 7 mil, complete with silicone adhesive on both sides. Tape usually comes with a crepe paper liner. This tape offers exceptional conformability and strong adhesion metal (and face-to-back).
6615-12 – Thicker double sided fiberglass tape, 12 mil – good for single layer plasma spray masking
6625-11 – Aluminum foil flame spray masking tape, 11 mil (with 4 mil foil)
6525-08 – All-purpose Abrasive Blasting masking tape. Tape is suitable for grit blast and air plasma applications. Construction is silicone rubber coated fiberglass complete with silicone adhesive.
6525-16 – Double Layered masking tape. Double Layer allows for single layer application for each job. In cases where 2 layers of standard tapes are required, the 6525-16 can reduce masking times by 50%.
7422W – Heavy silicone coated fiberglass fabric for more demanding jobs requiring protection of large surfaces. This fabric is more abrasive resistant and more suitable for primary masking jobs (as well as secondary).
- TacMold (A2023-A / A2023-B) masking compound is a 2 part silicone putty which is designed to withstand all forms of thermal spray including GF-HVOF and LF-HVOF. This putty is intended to assist with masking holes or complicated intricate profiles. In some cases, the compound is reusable.
- TacBloc – A soft, conformable, putty-like material for masking holes, grooves, key slots or any unique configuration. Unlike TacMold, TacBloc is formulated to adhere to metal in areas where anchorage is not possible. TacBloc is good for all forms of thermal spray.
Our How to Guide explains the best way to maximise the advantages of our TacMold & TacBloc Masking Compounds. Please log in or register to download it.