The characteristics of the ring rolling process in forging

The characteristics of the ring rolling process in forging are as follows:

The forging and rolling function of the Ring Rolling Machine is a forming process that was developed recently. It is mainly used for the production of ring parts. Compared with forging molding, ring rolling has significant economic and technical superiority, which I, a member of Jinan Qin Fu Machinery, will explain further today. This superiority manifests in the following areas:

1. Lower equipment tonnage is required. Rotational molds apply continuous localized pressure to the blank, which, compared to overall mold pressure, results in a smaller tool-work contact area, reduced deformation force, and allows the manufacture of larger ring parts using smaller tonnage equipment. This expands the range of ring molding.

2. The material utilization rate is high. Compared with die forging, ring blanking only requires small hole punching, resulting in marginal flash and drafts, which are common in die forging. The size and shape of the ring section are closer to the finished product, thus reducing cutting machining and saving raw materials.

3. The inherent quality is excellent. Ring rolling deformation involves radial compression and axial extension. The metallic fibers of the ring parts are continuously arranged along the circumference, often adapting to the forces and wear in use. Therefore, the strength and wear resistance of ring-rolled products are high, and the inherent quality is excellent.

4. The working conditions are improved. Compared with general forging, there is no impact, vibration, or excessive noise in ring rolling. The conditions significantly improve, making it easier to realize mechanization and automation.

5. The production cost is low. The ring rolling process boasts high material utilization, less machining time, low energy consumption, and a longer rolling die life, resulting in lower production costs.

6. The production rate is high. The rolling speed of ring rolling equipment is usually 1 to 2 meters per second, with the rolling cycle typically around 10 seconds, and sometimes as short as 3.6 seconds. Production rates can reach 1000 pieces per hour, which is significantly higher than forging and flame cutting, and also surpasses die forging production rates.

Currently, the ring rolling process of expanding machines and ring rolling machines is widely used both domestically and abroad. Ring materials usually include carbon steel, alloy steel, aluminum alloys, copper alloys, titanium alloys, drill alloys, etc. Commonly rolled products include train wheels, bearing rings, gear rings, sleeves, flanges, gas turbine rings, crane rotation rings, nuclear reactor vessel rings, and various reinforcement rings etc. The ring rolling process usually involves radial and axial deformation, but mainly focuses on radial deformation, requiring a blanking process. The size and shape of the blanks are one of the determining factors in obtaining qualified ring rolling parts. In addition, ring rolling can also act as a linking process between blanking and swing rolling processes, forming various interface shapes of ring parts. Such integration of ring rolling and swing rolling has even greater advantages.