Bright Bars Drawing

What are Bright Bars?

Bright bars are raw materials that are created from steel alloys through a cold drawing technique in a cold reduction mill. They have a geometrically precise molecular structure with an extremely smooth surface finish which always appears bright, giving it the name ‘Bright Bar’. It mainly comprises steel with varying addition of carbon and traces of other elements like chromium, manganese, iron, etc.

Bright bars are widely utilized by almost all industries due to their strength, durability and most importantly, their corrosion-resistant properties. They have excellent weldability and machinability, which makes them highly favorable for precision machining components and constructing large, sturdy structures.

How is the bright bar manufactured?

Bright bars are made from black bars which are the initial raw product obtained after melting raw materials. They are formed with a cold drawing process where it is cooled at room temperature and subjected to further fine-finishing processes such as annealing, turning, grinding, polishing, etc. With the help of these secondary processes, the final product can have a closer dimensional tolerance with a range of surface finishes for distinct purposes. Along with a superior surface finishing, they also possess a higher degree of susceptibility, concentricity, straightness and corrosion resistance.

The manufacturing of bright bar via drawing process involves three basic steps:

Rolling raw materials:

The raw material is passed through several hot-rollers at temperatures that are higher than steel’s recrystallization temperature. This process doesn’t allow any precise control over the forming of the bar, which makes it uneven and extruded.

Drawing Process:

After cooling the bar down to room temperature, it is passed through a drawing machine. The machine is fixed with a die which reduces the bar by its diameter while increasing its length.

Final Product:

The final product obtained from the drawing machine is a finely surfaced bright bar with enhanced mechanical and chemical properties.

What are the types of bright bars?

Bright Round Bars:

A bright round bar is designed through extensive heat treatment to provide extreme hardness. Its properties can be easily enhanced by adding other elements to the alloy.

Bright Rectangular Bars:

Rectangular bars are highly resistant to heat and external impacts, which makes them highly preferable for manufacturing small machining components.

Steel rectangular bars are heat-treated, cold drawn, annealed and tempered before they are formed for machining.

Bright Hex Bars:

The hexagonal shape of hex bars is primarily meant for manufacturing small fasteners and threaded components such as nuts, valves, hose ends, fasteners, hex bolts, etc.

Hex bars are extensively used in all fastening applications due to their reliable strength and durability.

Where are Bright Bars Used?

Bright bars are a prime component for manufacturing in various industries such as:

Engineering and construction to provide prompt stability, strength and durability to giant structures.

In the automobile industry for designing frames and chassis

For designing railings, trellis and fences in societies and public places

For manufacturing of machine components in various shapes and sizes

For making micro-size to mega-size fastener products for all industrial and non-industrial applications.