A kind of manufacturing method of magnetic circle and halbach array

Abstract

The invention provides a manufacturing method for a magnetosphere and Halbach array. The manufacturing method includes the steps of 1), manufacturing a stainless steel band of certain thickness and width into a circular ring; 2), manufacturing a NeFeB permanent magnet according to size of a single piece and magnetization direction regulated by the array; 3), according to a topological structure of the array, fixing a NdFeB magnetic tile of the single piece with the semicircular stainless steel band according to requirements of the Halbach array; 4), fixing a clamped component, of the NdFeB magnetic tile, obtained in the step 3) with a rolling ring welded to a tube die. By the manufacturing method, a device can be stably suspended for operation according to requirements of design, a magnetic suspension centrifuge can be operated stably and smoothly, and shortcomings of mechanical fatigue, friction loss, vibration, noises and the like brought by a reducer are overcome.

Description

technical field [0001] The invention relates to a manufacturing method of a magnetic ring and a Halbach array, belonging to the manufacturing field of a magnetic levitation centrifuge. Background technique [0002] Cement pipes are prefabricated pipes made of cement and steel bars, which can be used as urban sewer pipes, as well as upper water pipes used in some special factories and mines. Modern urban life requires cement pipes for both underground sewage discharge and laying underground cables. It is mainly used in highways, municipal construction, residential quarters, sports fields, squares, urban and rural construction, industrial and mining enterprises to discharge rainwater, sewage and farmland irrigation, culvert pipes , cable tunnels and other special-purpose pipes. [0003] Round tubular cement products mainly include concrete pipes, concrete pipe piles and concrete poles. The centrifuge is the main equipment for the production of such products, see attached fi...

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Problems solved by technology

[0006] However, the concrete strength of the nozzle is lower than that of the pipe body, so the centrifugal technology is not suitable for pipe jacking; when forming, the pipe mold lies on the centrifuge and rotates at a high speed, and the steel mesh moves accordingly, so the aforementioned prior art will appear in two ways. Conditions that affect the service life of the pipe: 1. When the welded joints of the steel mesh are not firm, there will be tendon running and leaking, so that the pipe body will appear partially unreinforced. 2. It is difficult to center the steel mesh after forming, and the steel mesh is eccentric Yes, that is, the protective layer of the steel mesh is uneven; this process requires a large number of molds to ensure the output, and the size of each mold is biased, and the split mold will be disassembled and used for a long time. The roundness of the pipe, the verticality of the nozzle, the diameter and the length of the pipe have large deviations, which will affect the installation quality of the project. Leakage will cause the road surface to subside and pollute the soil and groundwater on both sides of the pipeline.

In addition, the above-mentioned existing technology also has the following problems: 1. The wear and tear of the rolling ring is very serious, and frequent repairs are required

2. The noise during work is very loud, and it is the most noisy equipment in the entire cement product factory.

Then, there will be mode jumping phenomenon during operation.

4. High power consumption

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