Roll Forging Flange

Roll Forging Flange

Roll Forging Machining Products OEM Supplier Product Description and Process Roll Forging Machining Products OEM Supplier Production process: ring rolling process(ring forging process)(rolling forging process) Machining process: CNC machine, machining center, lathe, drill machine, etc. Surface...

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Roll Forging Machining Products OEM Supplier

Product Description and Process

Roll Forging Machining Products OEM Supplier

Production process: ring rolling process(ring forging process)(rolling forging process)

Machining process: CNC machine, machining center, lathe, drill machine, etc.

Surface treatment process: paint coating, powder coating, electrophoretic coating etc.


Product Material and Uses

Normally produce with carbon steel Q235, Q345, alloy steel 4140,4340, stainless steel 201, 304, etc.

The rolled ring forging  products are widely used for Bearings, Clutches, Couplings, Drives, Flanges, Gears, Glass-lined reactors, Machines, Robotics, Valves etc..


Roll forging

Roll forging is a process where round or flat bar stock is reduced in thickness and increased in length. Roll forging is performed using two cylindrical or semi-cylindrical rolls, each containing one or more shaped grooves. A heated bar is inserted into the rolls and when it hits a spot the rolls rotate and the bar is progressively shaped as it is rolled through the machine. The piece is then transferred to the next set of grooves or turned around and reinserted into the same grooves. This continues until the desired shape and size is achieved. The advantage of this process is there is no flash and it imparts a favorable grain structure into the workpiece.

Examples of products produced using this method include axles, tapered levers and leaf springs.


Seamless Rolled Ring Forging Process Operations

1. The ring rolling process typically begins with upsetting of the starting stock on flat dies at its plastic deformation temperature - in the case of grade 1020 steel, approximately 2200 degrees Fahrenheit.


2. Piercing involves forcing a punch into the hot upset stock causing metal to be displaced radially, as shown by the illustration.


3. A subsequent operation, shearing, serves to remove the small punchout ...


4. Producing a completed hole through the stock, which is now ready for the ring rolling operation itself. At this point the stock is called a preform.


5. The doughnut-shaped preform is slipped over the ID roll shown here from an "above" view.


6. A side view of the ring mill and preform workpiece, which squeezes it against the OD roll which imparts rotary action...


7. Resulting in a thinning of the section and correspondence increase in the diameter of the ring. Once off the ring mill, the ring is then ready for secondary operations such as close tolerance sizing, parting, heat treatment and test/inspection.


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