Cold Heading Quality (CHQ) Wires is a kind of steel wire that is manufactured by drawing and annealing wire rods.
The manufacturing of the Precision Drawell’s Cold Heading Quality (CHQ) Wires involves two important process named HRPPD (Hot Rolled Pickling, Phosphating and Drawing) & SAPPD (Spherodized Annealed, Pickling, Phosphating, and Drawing) are used to make the high-quality CHQ Wires with precision. The major applications of CHQ wire include Fasteners, Cold Forged Parts, Bearings, production of coupling parts such as bolts, nuts, wire for nut bolt, wire for self tapping screw and small screws, spokes wire and parts for machines.
The predominant reasons to use CHQ Wires in innumerable projects are due to its inherent qualities as they provide a smooth surface and improved tool life in forging, Spheroidized Annealing in nitrogen atmosphere resulting in zero decarburization, Closer tolerances in drawing from proper input sizes, and also to avoid ovality, Minimum 90% spheroidization and uniform grain size.
Fasteners
Precision Drawell’s CHQ wires are used in several industries like Automotive, Infrastructure, Appliances, and Other Industries for cold forging and fastener applications (like wire for nut bolt). In general, fasteners have been made using thread cutting or by the hot working method. However, due to the change in trend, nowadays the use of the cold working process to enhance productivity and to keep the cost down is quite common in fastener applications. The chief attractions of this process consist of good surface finish and dimensional accuracies to the fasteners. The cold heading process generates great hardness divergences in areas with dissimilar deformation ratios. Hence, an adequate balance of deformation, wire rod diameter, and equilibrated mechanical features of the raw material is required to minimize the scattering of the fastener properties. Examples are Flange Bolt, Bihex Flange Bolt, Wheel Hub Bolt, Serrated Screws, Piston Rod, Nut Wire, bolt wire, Wire for Nut Bolt and Nut bolts wire. These are also used in general engineering industries due to its high tensile nature along with extra strength and fatigue resistance required for total reliability in high strength fastening.
Cold Forged Parts
Another application of Precision Drawell’s CHQ Wires includes producing near-net-shape cold forged shafts of various diameters with precise tolerance. As we know, Cold forging is one of the most widely used chipless forming processes of bulk material at room temperature with no heating of the initial slug or inter-stage often requiring no machining other than drilling. Near net shape forging reduces machining efforts leading to reduced cost, also leads to an uninterrupted gain flow resulting in enhanced fatigue strength. The application of CHQ Wires in Cold Forged Parts gives you the highest performance, reliability, and long life in your product.
Ball Bearings
Precision Drawell manufactures ball bearings steel wire in accordance to SEP- 1520 standards.
We manufacture wires for various bearing applications like balls, taper rollers, cylindrical rollers.
The application of CHQ wire in bearings generates outstanding forge ability and consistent results that completely offer efficiency and better tool usage for customers.
Ball Bearings
Bearings are simple machines found in all those instruments and machines, which roll or tend to roll and are responsible for making the things roll. If there were not bearing, then we would be constantly replacing machines parts and instruments wore out from friction. Bearings have made several things in our life possible. The application of CHQ wire in bearings generates outstanding forgeability and consistent results that completely offer efficiency and better tool usage for customers.
Tie rods
Apart from the Fasteners, Bearings, Cold Forged Parts, Cold Heading Quality (CHQ) Wire is also a key element in tie rods that is used in the automobile, defence, construction, electronics & aerospace industry.
CHQ Wire is rigorously tested and then used in production to ensure its flawlessness, durability, and unmatched quality. The CHQ wire is highly recommended due to its remarkable characteristics that include rugged construction and anti-corrosive nature. These wires offer Fine finishing, accurate dimensions, and outstanding strength.
Screw
CHQ Wires are used to make critical fasteners, cold heading & cold extrusion components. These are produced under the state-of-the-art lab that inspects raw materials heat-wise. One such component is the production of screws. Wire for screw are used in ‘Automotive’, ‘Infrastructure’, ‘Appliances’ and other industries (like Wire for Screw, Wire for Self Tapping Screw).
Some of the commonly produced screws are:
Drywall
Drywall is a construction material. It is largely used to create walls & ceilings to devise many design features. This constructional material is quick & easy to install, long-lasting and are simple to repair if damaged.
CHQ Wires in Drywall help in easy installation of the product and aids in long-lasting. With continual testing, the consistency of the drywall is maintained and comes with customizable UTS.
Self- drilling
Self-drilling screws (wire for screw) work by cutting into the thread of the screw that creates a flute & cutting edge. The process looks similar to a tap/drill bit.
CHQ Wires in Self-drilling screws come under the infrastructure sector. Precision Drawell tests & gets approval for the complete product before dispatch to ensure quality & finish.
High tension bolts for wings
Another important application of Cold Heading Quality (CHQ) Wires can be seen in the aerospace industry. It is used to make High-tension bolts for wings, as it possesses striking workability and surface quality.
Spring industry
Cold Heading Quality (CHQ) Wires are also widely used in spring industry wires. Its increased tensile strength, hardness, toughness, and fatigue resistance, design versatility due to the cold working make it a preferred choice for springs.