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What is hot installation of machine tool bearings? How should we heat up the bearings of machine tools? Machine tool bearing hot installation generally refers to a heating process that involves installing the inner trap of the bearing onto the bearing block of the transmission shaft, and is divided into two processing processes: hot installation (or hot installation) and cold installation.

When designing and manufacturing rolling bearings, the selection of bearing materials is generally based on the following principles.1、 Select according to the working conditions of the bearings①. Working temperatureBearings working at room temperature are made of chromium bearing steel. Chromium bearing steel is also used for working temperatures above 150 ℃ and below 250 ℃, but it needs to undergo special heat treatment (requiring tempering at 200 ℃ or 300 ℃).②.

Annealing, also known as simmering, code name Th, is the process of heating a steel piece to Ac1 or Ac3 or above (30-50 ℃), holding it for a period of time, and then slowly cooling it (usually using furnace cooling).Normalization, also known as open flame, code Z, is the process of heating steel parts to Ac3 or Acm or above (30-50 ℃), holding them for a period of time, and then cooling them in air at a slightly faster cooling rate than annealing.The main difference between bearing annealing and normalizing is that normalizing is a deformation or special case of complete annealing, and the only

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1、 Specific definition of bearingsBearings, known as the "food of the mechanical industry", are indispensable key components in modern mechanical devices. From high-speed cars and airplanes to common household appliances such as refrigerators, vacuum cleaners, and air conditioners in daily life, bearings play a crucial role. Its existence ensures the smooth operation of rotating components, thereby achieving efficient energy conversion and transmission.A bearing is a component that helps an object rotate.

When determining whether the dismantled bearing can be reused, it is necessary to inspect the condition of the raceway surface, rolling surface, mating surface, wear of the cage, whether the bearing clearance has increased, and whether there are any damages or abnormalities that affect the decrease of dimensional accuracy after cleaning the bearing.

1. Overheating Overheating of the microstructure after quenching can be observed from the rough mouth of the SFC bearing parts. But to accurately determine the degree of overheating, it is necessary to observe the microstructure. If coarse needle like martensite appears in the quenched structure of GCr15 steel, it is a quenched overheated structure.

Process flow of bearing outer ring processing: Bearing steel ->Forging ->Annealing ->Turning ->Heat treatment ->Grinding ->Assembly ->Inspection ->Packaging and warehousingThe purpose of forging technology1. Forming: Control reasonable turning allowance.2. Obtain a high lifespan forging streamline distribution to ensure bearing life.3. Obtain the ideal metallographic structure and prepare for annealing and quenching.The purpose of annealing process1. Reduce hardness and prepare for machining.2. Obtain the ideal metallographic structure and prepare for quenching.3.

In recent years, ceramic bearings have been increasingly used in various fields, such as aviation, aerospace, navigation, petroleum, chemical, automotive, electronic equipment, metallurgy, power, textiles, pumps, medical equipment, scientific research, and national defense and military. The advantages of using ceramic bearings in new products are becoming increasingly apparent. The following is a specific understanding of the advantages of using ceramic bearing materials.The advantages of ceramic bearing materials mainly include the following:1.

Cast iron bearing seatAdvantages:Low cost: Cast iron materials are relatively inexpensive and suitable for situations with limited budgets.High hardness: In ordinary cutting processes, the hard and brittle nature of cast iron makes cutting easier.Suitable for low-speed, light load, and situations that do not require high-precision operation: The brittleness of cast iron may cause it to fracture when impacted, making it unsuitable for high-speed or heavy-duty environments.Disadvantages:Poor toughness: prone to rupture under heavy loads or high-speed operation.Not suitable for harsh environments