Technologies

Home - Our Company - Technologies
The most commonly technologies used for the parts production
at KW Construction
Laser cutting

Laser cutting is a modern machining method with similar dimension parameters as the classical machining. The fundamental difference concerns the cutting medium, which in the case of laser cutting is a hot laser beam and a jet of high-purity technical gas. Depending on the device used (and especially its power) the laser cuts the material by burning, melting or blowing it away.

The technology makes it possible to cut even very hard materials
(e.g. titanium alloys) with a thickness up to approx. 25mm.

Water jet cutting

The technology of cutting with abrasive slurry uses a stream of water to accelerate abrasive grains. After passing the water nozzle water causes abrasive to be sucked into the mixing chamber. The mixture of water and abrasive is then routed to the abrasive waterjet nozzle where it is formed and stabilised. The stream formed this way has enough energy to cut through even the hardest materials. The speed of such a stream at the nozzle outlet exceeds 300m/s.

This technology enables cutting very hard materials
with a thickness of 150 mm and more.

Turning

Turning is a type of machining most commonly used for machining external and internal surfaces of objects with a shape of a solid of revolution. It is also possible to generate other shapes than those of revolution using the method of turning. Turning consists in removing a layer of material from the workpiece by means of a knife in order to obtain the desired shape and dimensions. The basic movements are the main rotary movement of the workpiece and the linear feed movement of the tool bit.

The machine used for turning is called a lathe.

Milling

Milling is a type of machining in which the rotary movement is always made by the tool and the feed movement is also made by the tool or the workpiece (depending on the design of the machine).

The machine used for milling is called a milling cutter.

CNC sheet metal bending

CNC sheet metal bending is a type of metalworking technology in which the curvature of the workpiece is permanently changed by means of a numerically controlled press brake. Using press brakes with appropriate punches and dies, it is possible to bend sheet metal at any angle, also to crimp or corrugate it. CNC control ensures excellent repeatability of the process.

CNC tube bending

CNC tube bending is a type of metalworking technology in which the curvature of a pipe is permanently changed by means of a numerically controlled tube bender. Using a bender with appropriate rollers, it is possible to bend pipes at any angle and also to roll them. CNC control ensures excellent repeatability of the process.

TIG welding

A method of welding with a non-consumable tungsten electrode protected by an inert shielding gas, such as argon or helium, or a mixture thereof. It is marked with code 141. The arc burns between a non-consumable electrode made of pure tungsten or tungsten alloyed with oxides, such as thorium oxide, zirconium oxide, lanthanum oxide and others, the material being welded. In most applications, the TIG electrode is connected to the negative pole and the earth clamp to the positive pole of the welding machine. This causes more heat to be generated at the welding spot with reduced loading of the tungsten electrode.

Anodising

Anodising is a method of surface treatment of metals in which an oxide layer is formed electrolytically, with a greater hardness and resistance to corrosion than the naturally formed surface. Anodising is mainly applied for aluminium and its alloys. Alloy additives in aluminium alloys spoil the appearance of the anodised object and in a large amount, they can render the process impossible; therefore, silica-based casting alloys (4000 series) are not anodised.

Powder coating

Powder coating is a method in which electrostatically charged particles of powder paint are applied to a conductive surface. The coat of powder holds to the surface due to electrostatic forces. Then the parts coated with paint are heated to 140-200°C as a result of which the powder melts and undergoes polymerisation. The paint coating obtained in this way is resistant to corrosion, chemicals, high temperatures and mechanical damage.

Hot-dip galvanisation

In the process of hot-dip galvanisation workpieces are immersed in molten zinc. The operating temperature of the bath is 440-460°C. During the immersion of the workpiece a layer of zinc is formed as a result of mutual diffusion of the molten zinc with the steel surface. Typically, the steel only needs to be immersed in zinc for a few minutes.

TYPES OF METHODS OFFERED
Electropolishing

Electropolishing is an excellent way to create a smooth surface and protect the workpiece against corrosion.

Manual polishing

Manual polishing is a method of final treatment of a workpiece and its purpose is to achieve the ‘mirror reflection’ effect on the surface of the workpiece.

Polished surface

We offer polished workpieces with inox finish or 3M™ Scotch-Brite™.

Painting, anodising and galvanisation

We offer painted, anodised and galvanised parts according to the technology above.

Raw workpieces

We also offer unpolished workpieces, either wrought or unwrought.

Other

We also accept custom orders. Have you got one?

We will be happy to answer your question !

CONTACT

See other services
We offer our customers preparing visualisations, explanatory diagrams, engineering documentation or the workpiece itself based on a supplied sketch, design or a 3D model of the part.
CAD services