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A method for reducing friction and wear of bearing pair of hot-dip galvanized sunken roller

A friction and wear, submerged roller technology, applied in hot-dip plating process, coating, metal material coating process, etc., can solve the unsteady effect of rotor self-weight on suspension stiffness, working load and functional requirements that cannot be actively controlled and attenuated differences, etc.

Active Publication Date: 2022-06-28
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is reasonable to use the suspension scheme of permanent magnets in this technical scheme, but the permanent magnet materials that can withstand the high temperature of the zinc pot have not been developed so far, and the suspension force of the permanent magnets is completely passive and cannot be actively controlled. Under conditions such as strip tension fluctuations, there are still major deficiencies and problems in its application
[0008] In addition, in the existing technology, magnetic suspension bearing technology is an effective method to solve friction and wear, but under the high temperature and high corrosion conditions of the hot-dip galvanized zinc pot, and the working load and functional requirements of the hot-dip galvanized sinking roller bearing pair are different from those of traditional magnetic suspension bearings. Bearings are also quite different
For example, traditional magnetic suspension bearings are mostly used in high-speed rotation conditions, which can greatly attenuate the unsteady influence of the rotor's own weight on the suspension stiffness, while the hot-dip galvanized sinking roller belongs to the passive low-speed rotation range, and the weight of the sinking roller cannot be ignored (2.5 tons). The buoyancy effect of the zinc liquid and the tension of the strip steel make the overall force of the sinking roller about 4 tons in the upper left direction, which belongs to the low-speed and heavy-load working condition of fixed point contact friction and wear, and the traditional magnetic suspension bearing technology cannot be copied.

Method used

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  • A method for reducing friction and wear of bearing pair of hot-dip galvanized sunken roller
  • A method for reducing friction and wear of bearing pair of hot-dip galvanized sunken roller
  • A method for reducing friction and wear of bearing pair of hot-dip galvanized sunken roller

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Embodiment 1

[0055] figure 1 , figure 2 It is an explanatory diagram of one of the implementation methods of the present invention. In the figure, 1 is the strip steel, 2 is the submerged roller, 3 is the shaft head of the submerged roller bearing pair, 4 is the arm sleeve of the submerged roller bearing pair, 5 is the key point of friction and wear of the bearing pair, and 6 is the circumferential structure of the magnetic conductive material , 7 is the excitation structure, 71 is the electromagnet head assembly of the excitation structure, 72 is the displacement sensor of the excitation structure, 8 is the connection roller frame of the excitation structure, 81 is the stopper of the connection roller frame, 9 is the original bearing of the submerged roller and the auxiliary roller frame , 91 is the stop of the original bearing auxiliary roller frame.

[0056] In the traditional hot-dip galvanizing production, the strip steel passes through the sinking roller in the zinc pot to complet...

Embodiment 2

[0065] The second realization method of the present invention is:

[0066] Completely cancel the bearing substructure of traditional sunken rolls (see figure 1 and figure 2 4 and 9) and journals, etc. shown in , only keep the roller 2 of the original sunken roller, and add welding ring magnetic conductive material structure on both sides of the sunken roller, or on both sides of the original sunken roller. On the inner wall, the ring magnetic conductive material structure 6 is provided by welding or inlay, see image 3 and A-A section Figure 4 shown. Furthermore, a full-circle excitation structure 7 is arranged on the inner circumference of the annular magnetic-conductive material structure 6 with a certain gap. Several pairs of circumferentially symmetrical electromagnet head assemblies 71 and displacement sensor assemblies 72 are arranged in the full-circle excitation structure 7 . The excitation structure 7 is fixed on the external connection roller frame 8 .

[0067...

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Abstract

A method for reducing the friction and wear of hot-dip galvanized sinking roll bearing pairs, characterized in that a circumferential structure (6) of magnetically permeable material is arranged on both sides of the sinker roll (2), and is close to the circumferential structure of the magnetically permeable material ( 6) An excitation structure (7) is arranged on the inside or outside, and the excitation structure (7) is controlled by AC or DC to generate electromagnetic attraction force on the circumferential structure of the magnetic permeable material. The resultant force of the strip steel tension makes the sinking roller (2) and the excitation structure (7) rotate in non-contact or frictional rotation with low contact force, thereby reducing the friction and wear of the bearing pair and improving the use of the sinking roller bearing pair life.

Description

technical field [0001] The invention relates to the field of hot-dip galvanizing, in particular to a method for reducing friction and wear of a bearing bush assembly of a sunken roller in a zinc pot. Background technique [0002] In recent years, with the rapid development and expansion of industries such as automobiles and home appliances, continuous hot-dip galvanizing products and production processes for strip steel have made great progress. The problem of friction failure is still a key constraint and bottleneck in the production of hot-dip galvanizing of strip steel, and it is also a major technical problem in the field of hot-dip galvanizing. [0003] As we all know, in the production of hot-dip galvanizing of strip steel, the sinking roll is fixed on the bracket through the bushing and the bearing bush, and is immersed in the molten zinc solution of 460-480 ℃ (the temperature of hot-dip galvanizing is as high as 630 ℃). The high-speed strip is inclined into the zinc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C2/06
CPCC23C2/06C23C2/003
Inventor 钱洪卫侯晓光杨冰
Owner BAOSHAN IRON & STEEL CO LTD