Services
Hi - Tech Blasting's Services incorporate
Surface Improvement
Precision Cleaning
Application of Technical Coatings
Surface Improvement - Steel Shot Peening or Glass Bead Peening
The surface of all metal parts contain some degree of micro-cracking, tiny cracks, discontinuties or even tool marks that can be a source of failure.
When a metal part is stressed and subjected to cyclic loading these micro-cracks enlarge and propogate through the part.
At some point in time the part will fail.
Normally, tensile stresses concentrates at the top or bottom of crack during loading.
However, the compressive skin created by peening tends to cancel out the tensile stresses and the cracks do not propogate.
Cyclic fatigue failures generally begin at the surface defects or stress concentrations known as stress raisers. Examples of high stress areas are machine marks, scratches, corners or holes, fillets, keyways, splines or other changes and interruptions in the smooth surfaces of metal.
Peening improves fatigue life, strength, operation and corrosion resistance.
Reliability of parts is enhanced as this treatment provides repeatedly uniform finishes, surface durability and wearing qualities.
All surface stresses and most internal stresses can be relieved by peening. Surface stresses resulting from ordinary machining operations may be transformed into hard-wearing compressive stresses.
Precision Cleaning - Glass Bead Peening or Blasting
The Precision Cleaning carried out by Hi - Tech Blasting uses the media of spherical glass beads.
This method of cleaning is a way to remove all foreign matter from metal, such as scale, corrosion, paint, carbon and epoxy.
Glass bead blasting prepares parts for assembly or for plating, anodizing, painting or coating.
A freshly bead blasted surface is beautifully clean and has a slight sheen.
It totally replaces brushing, grinding and chemical cleaning methods.
Complex items can be easily cleaned by glass bead impact blasting.
Glass beads are spherical, they do not have a cutting action. They will therefore remove contamination and finish surfaces without destroying critical working tolerances.
The process of glass bead blasting produces a beneficial effect of improving the surface finish of cast, machined or rough surface components.
Micro pores of metal are closed in all metals, particularly effective on aluminium and die cast products.
Application of Technical Coatings - Solid Dry Film Lubricant Coating Service
The Coating - provides a reduction of frictional forces and provides the ultimate level in wear protection for run-in or total life lubrication.
The Coating - has been specially selected for its ability to form a tenacious bond with metals of all types.
The Coating - is ideally suited as a precoating to components to give protection during run-in period as well as offering protection for components under extreme operating conditions.
This Process - is designed for the coating of components such as shafts, slides, pins, bushes, plain bearings, pistons and gears.
This Process - requires the substrate to be clean and free from all grease and dirt.
Hi - Tech Blasting utilizes in-house technology for the surface preparation of all components thus ensuring an effective bonding between coating and substrate.
Precision Cleaning and the Application of Technical Coatings - Magnesium Cleaning and Protection Service
Hi - Tech Blasting provides a specialized service of precision cleaning and protective coating of genuine magnesium components.
Magnesium in an unprotected state acts like a sponge absorbing moisture from the atmosphere, hence encouraging corrosion to form.
Magnesium is subject to corrosion which has an unsightly appearance and is subjected to premature failure.
Corrosion can be controlled by glass bead peening. Hi - Tech Blasting uses strict parameters in the blasting process designed to avoid all unwanted induced stresses which result in premature failure.
The correct blasting process produces the correct compresses surface layer which has a beneficial effect of denying corrosion and fatigue induced cracks a place to start, produces a metallurgically clean surface, allows quick and easy visual inspection for defects.
Magnesium protection coating can only be completed once the meticulous surface preparation has been carried out by Hi - Tech Blasting.
The chemical conversion produces an inactive surface layer which may have a decorative paint sealer to complete the process.
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