Bearings for Continuous Caster

Introduction to bearings for converters

The converter bearing is a key component for installing the rotating part of the furnace body in the converter equipment. Its main function is to support the weight and inertial force of the furnace body when it rotates, to ensure the smooth rotation of the furnace body, and to reduce wear and energy consumption. The pipe has flanges that connect the two ends of the rotary bearing. There is a round hole in the middle through which flue gas can pass. When selecting converter-bearing materials, requirements such as endurance, wear resistance, and corrosion resistance need to be considered.

What are the specific requirements for wear resistance of converter bearings?

The wear resistance of converter bearings is mainly reflected in the following aspects:

Tribological properties: The tribological properties of bearings directly affect wear resistance, which includes sliding and rolling friction, as well as static and kinetic friction. These characteristics can be improved by selecting polymer materials or surface treatment technology.

Surface roughness: Surface roughness is an important factor affecting the wear resistance of bearings. The rougher the surface, the larger the contact area, the greater the friction, and the faster the wear. Therefore, appropriate surface roughness needs to be selected.

Hardness: Hardness is another important factor affecting bearing wear resistance. The higher the hardness, the better the wear resistance. However, bearings that are too hard may deform at high temperatures, affecting their performance. Therefore, the appropriate hardness needs to be selected.

Lubricants: Proper lubricants can significantly improve the wear resistance of bearings. Lubricant can form an oil film between the bearing and the raceway, reducing the contact area and thereby reducing friction and wear.

In actual use, it is necessary to select suitable bearing materials and design structures according to the actual working conditions of the converter (such as temperature, pressure, rotation speed, etc.) and also consider factors such as cost and life.

Below are the size range and design attributes of a product used in low-medium-speed rolling mills:

Size Range: 

- ID: from 50.800 mm to 1500.000 mm (2.0000 in. to 59.0551 in.)

- OD: from 83.337 mm to 2032.000 mm (3.2810 in. to 80.0000 in.)

Design characteristics:

There are two double cones, two single cups, and one double cup with a cone spacer and two cup spacers.

Spacers are designed with slots or holes that allow for lubrication.

Cone spacers have been hardened to minimize wear on their faces.

They are numbered serially to ensure the correct installation sequence.

Bearings for BOFs and Converters

Ultra-Large Split Bearings for BOFs and Converter Trunnions

Benefits :

Bearings can be replaced without removing the bull gear, thus reducing maintenance costs

Reduction of maintenance costs by shortening length of time for bearing replacement work

Reduction of production loss, which would affect subsequent processes

Techspecs:

Ultra-Large Split Bearings for BOFs and Converter Trunnions

Fig. 1 Fig. 2 Clamp Ring with Tangential Seal Surface

Remarks:

1. The shapes of bearings marked * are not exactly the same as shown in Fig. 2.

2. Other bearings are available. 

Please contact FV for additional information.