Advantages of the Thread Rolling Dies and Process

Thread rolling is a metal forging process that forms the threads into a mirror image of the roller die. The process differs from metal cutting, grinding and chasing because it does not remove any metal from the workpiece. Instead, thread rolling uses hardened steel dies to displace and shape the ductile metal. Thread Rolling Die supplier presents to you.

 

 

Thread rolling is a metal forging process that forms the threads into a mirror image of the roller die. The process differs from metal cutting, grinding and chasing because it does not remove any metal from the workpiece. Instead, thread rolling uses hardened steel dies to displace and shape the ductile metal.
Rolled threads offer improved physical characteristics, higher precision and a high degree of surface finish. They are produced uniformly at high productivity without wasting material. These six advantages have led to an increase in the number of thread rolling processes. LINGBIAOsupplier presents to you.

 

Physical properties

The cold forging the threads receive during rolling enhances their tension, shear and fatigue strength. Surface roughness is less than that of turning, milling or grinding. The thread surface can be hardened after rolling to increase strength and hardness, and the die life is long.

 

 

Tensile Strength

The cold working of the surface increases the tensile strength of the machined metal, and static tensile tests often record an increase in the part's breaking strength of about 10%.

 

Shear Strength

When a thread is rolled, the fibers of the material are not cut off as in other thread production methods, as shown in Figure 3, but are re-formed in a continuous unbroken line following the contour of the thread, as in any good forging as shown in Figure 4. Rolled threads resist stripping because shear damage must occur in the transverse direction and not between grains.

 

Sharp Tail Screw Die

 

Fatigue resistance

Thread rolling improves the fatigue failure resistance of a part in several different ways. Rolling between smooth dies gives the threads smooth roots and flanks, with no tears, chatter or cut marks that can serve as focal points for stresses and therefore the starting point for fatigue failure.

 

Accuracy

The production of accurate threads often requires tight control of the center diameter, thread angle, lead, taper, roundness and roundness.
There are a number of reasons inherent in the ease with which roll machining achieves median, thread angle, lead and taper accuracy compared to other processes and, often equally important, the maintenance of that accuracy over time.

 

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Uniformity

What makes rolling unique is its inherent ability to maintain original set-up accuracy over long periods of high-speed production.
Thread rolling dies do not wear out like other threading tools. Rather than being concentrated on the sharp cutting edges, wear is distributed over a wide surface, and the rolling action is relatively frictionless. As a result, the thread shape of a rolling die is not altered by corrosion.

 

The development of the thread rolling process and rolling equipment is not yet complete. On the contrary, there is more interest and activity in the process now than at any other time in its history. New machines and attachments are constantly being developed and the process is finding new applications every day where its speed, accuracy, uniformity and the strength it adds to rolled parts can be used to reduce costs and improve the quality of rolled parts for an unlimited number of threaded parts.

 

Fengfeng mold factory has CNC lathes, CNC machining centers, CNC Cylindrical Grinding Machine, CNC EDM machine, CNC Cutting Machine, Milling Andam Drilling Machine, etc. We also have various types testing equipment, such as Rockwell Hardness Tester, Projector, 3D Image Measuring Instrument, etc. Please send us a message today if you want to buy them.