Ytstrukter AB

Ytstruktur Arboga AB is specialised in controlled shot peening and have a large number of shot peening equipment, ranging from simple manual machines to fully automated robot controlled.

Controlled shot peening is the core business and represents approximately 70%-75% of the sales.

Vibration polishing

Vibration polishing is a method in which mechanical working with a median together with a chemical polish gently grinds or polishes a detailed surface. Detailed surfaces with complex geometry can be successfully polished in this way.

Vibration polishing has a variety of uses, such as:

• Removing all burrs and sharp edges after cutting and punching
• Rounding off edges, and improving surface finish and buoyancy
• Removing smaller dents
• Removing mill scale and oxides after heat treatment for example

We can vibration polish singular parts as well as whole series.

Shot peening

Shot peening is a controlled process that is primarily used to greatly reduce the risk of cracking and fatigue failure of parts subjected to dynamic loading. "Cold hammered" parts in very controlled conditions using small steel, glass or ceramic beads, create a permanent compressive stress in the surface layer.

It is well known that cracks will not start or propagate in areas of compressive stress.

Fractures are most often caused by some kind of damage or crack on the surface - where the negative tensile stresses causes the damage to grow and eventually fracture.

Tensile stresses in parts can occur partly because of dynamic loads in operation (eg, bending, twisting) or during the manufacturing process (eg machining, grinding and welding).

With the help of shot peening, negative tensile stress can be replaced with compressive stress, which significantly increases the product life and allows a part to withstand a greater load.

Shot peening also counteracts the formation of different types of contact damage between metallic material such as Fretting and Galling.

Common applications for shot peening are the bottom sections of gearboxs, splines on the axles of cars and trucks, radius transitions in the cylinders of rock drilling equipment, and shovel attachments in compressor discs for the air and gas industry - but the method is applicable within all industries and on all metallic materials which are exposed to large dynamic loads.

Shot peening is not a removal process as the propelling surface is altered slightly in regards to tolerances and surface finish.

Non-destructive testing

With non-destructive testing you can discover cracks and other faults before serious damage occurs. This method is usually used:

• When manufacturing an important part so as to ensure the quality of the production process
• With maintenance so as to optimise a component's life and avoid problems through regular control

We work with OFP methods PT and MT which means that we can detect cracks in both magnetic and unmagnetic material.

Our OFP staff are level II certified according to AIA-NAS-410 and the process is controlled in accordance with international standards ASTME 1417 for PT and ASTME 1444 for MT.

We can even visit customers and implement OFP onsite.

Qualified blasting

Our blasting equipment includes both manual and automatic, suitable for different kinds of blasting so single items as well as whole series can be blasted.

We use: aluminium oxide, silicone, and glass, steel and plastic balls.

Our knowledge in shot peening also affects how we carefully govern the blasting process and consequently achieve good results on shifting material.