Detailed explanation of how to prevent slewing bearing quenching cracks?

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slewing bearing t is widely used in large -scale rotary devices in engineering, mining, wind power, oil, chemical industry and other industries. When the rotary support is running, its rail structure is the focus of guaranteeing normal operation. The orbit of the reincarnation support is processed by quenching. Today I will tell you how to prevent quenching cracks.

How to prevent quenching crack

1. Choose a reasonable quenching method

According to the structure and characteristics and technical requirements of the rotor bearing, the correct and reasonable selection of structural design status and the quality of workers can be greatly reduced or no quenching accidents can be greatly reduced.

2. Arrange the process line reasonably

Once the material, structure and technical conditions of the rotation support are determined, the craftsman must conduct a process analysis to determine the reasonable process line. Correctly arrange the order of preparing processing, thermal treatment and heat processing. This is the main effective way to prevent the tendency of rail cracking after thermal treatment.
Rotary support 3. Properly determine heating parameters

In the heating production of the rotary support rail, improper heating is the main factor that causes the quenching and reincarnation support. Therefore, heating parameters such as heating medium, heating speed, heating temperature, and thermal insulation time should be correctly selected and designed.

4. Other measures to prevent quenching cracks

After quenching, it is recovered after quenching. The thin -walled treatment of complex parts of the shape can also effectively prevent the production of cracks.

5. Selection of quenching medium

The selection of quenching medium should be comprehensively considering the rotary support for the quenching method: including quenching groove liquid, stirring speed, flowing direction, and solution concentration. As well as the characteristics of the rotation support, the chemical ingredients of the steel, the section size of the workpiece, the geometric shape, the surface roughness and the surface state, the arrangement status and density of the arrangement during the quenching of the road.

I introduced so much about how to prevent quenching cracks, I hope to help you! Whether the rotating support can work normally, it is the key to prevent quenching cracks!

Shield machine slewing bearing

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The diameter of shield machine slewing bearing varies from 2.5 meters to 6 meters, and some diameter is larger. This kind of bearing works in very harsh conditions, with large bearing load, strong corrosion resistance and short life.

Shield tunneling machine is the main construction machinery in shield tunneling method, which must have high reliability and can work stably and reliably. The main bearing of large shield machine mainly adopts three-row roller slewing bearing, which needs to bear large axial force and overturning moment in the working process, as well as certain radial force. The loading situation is complicated, and it is easy to produce large deformation, which affects the construction safety of shield machinery.

Features and applications of turntable bearing

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The turntable bearing is an important part of many automobiles and machine tool equipment. There are multiple models of the turntable bearings. There is no need to support the body in the work. As long as the gap between the support to the face and the work surface is maintained, the turntable can be balanced. It can be selected as needed, and the scope of use is also very wide. Generally applicable to the precision transmission parts in the machine, in which aspects of the specific turntable bearings are used. Essence

1. The characteristics of the rotor bearing

The rotor bearing is generally suitable for tolerance of radial load (rotating torque) greater than 10N.M, and axial load does not exceed 20n.m. The roller and steel of the roller of the turntable bearing are carburized on the surface, and the surface hardness is high, which is suitable for occasions with impact loads.

The rolling roads are generally produced in precision processing methods, and their diameter can be selected as needed; inner and outer circles are demolished to facilitate maintenance and replacement. There are multiple models in the rotor bearing, which can be selected as needed. The turntable bearing is an overall component composed of high -precision, high -performance steel ball and graphite, and is mainly used in precision rotation instruments.
Rotor bearing
Second, the application of the rotor bearing

The turntable bearing is a high -precision, large carrying capacity, high stability, and high stability. It is widely used in the field of aerospace industry, petrochemical production and mechanical manufacturing industry. The roller of the rotor bearing is precisely processed, so there is no special requirements for the material. According to the application field, you can choose different brands of materials. The scope of the rotor bearing is wide, which is generally suitable for the precision transmission parts in the machine.

The characteristic of the rotor bearing is determined by the structure of the bearings. There is only one set of support in the entire structure. It does not require supporting body in the work. balance.