We have a sharp edge over copetitors in our in-house production line, such as:
Wire Drawing
Wire Drawing is carried out to get the required wire size for cold forging the parts depending upon the size of fasteners to be manufactured. Generally, the percent reduction in area is maintained between 7% to 15% so that there is not much resistance for deformation during cold forging wherever high percentage of reduction in area is required during wire drawing. Spheroidized Annealing of wire rod is carried out and its spheroidization value is maintained at greater than 90%. All wires are drawn from wire rod which is spheroidized annealed so that after spheroidized annealing, the wire rod is acid pickled and zinc phosphate which will act as lubricant during a skin passing in the wire drawing machine. This wire is now ready for cold- forging.Cold Forging
In Cold forging, the grain structure will be uniform and will take the shape of the contour of the tools used while upsetting the raw material to the desired head shape. So this will give higher strength of the forged part compare to the machine part and the surface finish thus obtained a ‘A’ grade product.Hot Forging
Hot Forging, is carried out diameter greater than 20 mm or for smaller diameter where the length of the screws is beyond the capacity of the cold forging and also where the volume is smaller quality can be hot forged. Hot forging also encompasses higher manufacturing tolerances which have more possibility for additional head styles.Thread Rolling
Thread rolling is the preferred method for producing strong, smooth, precise, and uniform external thread forms. Thread rolling is different from other types of threading processes like cutting, grinding, and chasing.Thread rolling is a cold forging process that can be performed on any ductile metal. The forming process can be used to produce other special forms, such as knurls. For the best quality threads, the process is performed on precision centerless ground blanks. The blank diameter of a rolled thread is at the pitch diameter, a theoretical point between the major diameter and minor diameter.
Mechanical and Chemical Lab
We have in house lab facilitates. The fasteners go through quality check at every stage.Dadu precision Fasteners inspection facilities have testing both mechanical and chemical aspect of fasteners, to meet the needs of our esteem customers.