Bristle Blasting

Bristle Blasting is a method for processing a metallic surface by means of a specially designed and equipped with a rotating belt wires. It is used to remove corrosion or any existing surface coating and at the same time to produce a surface cleanliness and roughness. The term bristle blasting suggests that with this method a worked with by sand blasting ( blasting ) comparable surface is achieved, but instead use an abrasive, created by the impact of bristles ( bristles ).

Function

A stocked with wires band rotates on a tool head of a pneumatically or electrically operated, hand-held drive unit. During the processing of a surface the ground and hardened bristle tips strike on the surface with a kinetic energy that is comparable with that in the beam processes. Jump Immediately after breaking back the bristle tips with corrosion, scale or any existing surface coating removed and at the same time a tiny craters on the surface and thus a surface roughness is generated.

Distinction of rotating Bürstbändern

The difference ( abrasive ) Drahtbürstbändern lies particularly in the shape and in the manner of anchoring of the wire bristles on the belt body. Unlike Bürstbändern in which the most rigid possible anchorage is to be achieved, single U-shaped wire bristles are elastically mounted in a nylon ribbon for the bristle blasting process. The flexible anchor and the angled shape of the wire bristles causes a more vertically instead of tangential impact of the bristle tips, whereby the bristles of an abrasive rebound and instead pattern ( grooves) produce tiny craters on the surface. A so-called acceleration rod biases the bristles and also increases the kinetic energy of the impact of the bristles on the surface.

Areas of application

Bristle Blasting is mainly used for surface preparation of metal surfaces before applying a corrosion protective coating, old coating, rust or scale removed, cleaned the surface and a surface roughness should be generated. Due to the slower compared to other blasting methods operating speed (about 1.1 square meters per hour - depending on material and surface quality ) is the method primarily for spot repair used or where due to legal or technical safety requirements, the use of sand blasting is not allowed. Areas can be found among others in the oil and gas industry (cleaning and roughening of welds ), repair and maintenance of steel structures to offshore installations in bridges, ships and steel hydraulic engineering.