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Application of porous material with metal wires metallurgically bonded to production of fluid lubricated mechanical parts

A combination of fluid lubrication and metallurgy technology, which is applied in the field of fluid lubrication of metal porous materials, can solve the problems of low mechanical properties and machining performance, limited distribution quantity and position, and inability to manufacture air-floating electric spindles, etc., to improve The effects of mechanical properties, small fluid penetration resistance, and large bearing capacity

Inactive Publication Date: 2019-05-07
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In 2017, the U.S. patent No. US9624981B2 was the invention patent of the gas pressure bearing unit, and in 2017, the Guangzhou Haozhi Electromechanical Co., Ltd. application number CN201620610952 was the Chinese utility model patent. Generally, the air holes opened are drilled by machining. The size of the air holes cannot be too small, otherwise it cannot be processed, and the number and position of the distribution are limited. The bearing capacity and rigidity of the air film are small, and it is impossible to manufacture higher power Air-floating electric spindle
Porous carbon, namely graphite, has low mechanical properties and machining properties, and is easy to be broken. It cannot be easily manufactured into mechanical parts of various shapes and sizes like ordinary metal materials; it cannot be welded, it is inconvenient to install, and graphite materials more expensive, higher cost

Method used

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  • Application of porous material with metal wires metallurgically bonded to production of fluid lubricated mechanical parts
  • Application of porous material with metal wires metallurgically bonded to production of fluid lubricated mechanical parts
  • Application of porous material with metal wires metallurgically bonded to production of fluid lubricated mechanical parts

Examples

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Embodiment 1

[0034] The application of metallurgical metallurgy combined with porous materials provided by this embodiment in the manufacture of fluid lubricated mechanical parts, specifically: the metal wire materials are gathered together, pressed to make the metal wires contact each other, and the metallurgy between the wires is achieved. Combining, preparing and obtaining a metal wire porous material with connected pores; then processing the metal wire porous material into a porous fluid-lubricated mechanical part, and assembling the porous fluid-lubricated mechanical part to a corresponding position in the mechanical structure; and then using The fluid passes from one side of the porous fluid lubricated mechanical part through the pores of the porous fluid lubricated mechanical part to the other side of the porous fluid lubricated mechanical part and enters the gap between the porous fluid lubricated mechanical part and another part to form fluid lubrication A layer that reduces or eli...

Embodiment 2

[0040] The difference from Example 1 is that in this example, 100 H13 steel wires with a diameter of 55 microns are used as a bundle, and the multi-bundle wires are braided into a thick rope with a diameter of 300 mm by a rope braiding machine, and then the braided A good thick rope with a diameter of 300 mm is sintered in a vacuum heating furnace, heated to 1250 degrees Celsius for two hours, so that metallurgical bonding between the wires is achieved, and H13 steel rods with long fibers and porosity are manufactured. Then carry out cold forging at room temperature to reduce the diameter of the material by 10%, increase the density of the material, reduce the size of the pores, and manufacture a porous metal wire material with a maximum characteristic size of pores of 50 microns and a porosity of 45%. Then the prepared metal wire porous material is machined into figure 1 Part 3 in the ring bearing part.

[0041] Compared with the prior art, this embodiment has the following ...

Embodiment 3

[0043] The difference from Example 2 is that in this example, the thick rope with a diameter of 300 mm obtained in Example 2 is cut into a cylinder with a length of 500 mm, heated to 1250 degrees Celsius, and then the hot cylinder is placed in the extrusion cylinder , the diameter of the core rod is 50 mm, the diameter of the outlet is 290 mm, and it is extruded in a pipe extrusion die to manufacture a pipe with an outer diameter of 290 mm, a hole diameter of 50 mm, and a wall thickness of 120 mm. Due to the small extrusion deformation , the pores in the material will not be completely eliminated, the obtained tube material contains tiny pores, and then the prepared metal wire multi-porous tube material is machined into figure 1 Part 3 in the ring bearing part.

[0044] It is also possible to weave long metal wires into blocks, rods, and plates, press, and sinter to prepare block, rod, and plate metal filament porous materials, and then prepare the obtained metal wire porous m...

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Abstract

The invention discloses an application of a porous material with metal wires metallurgically bonded to production of fluid lubricated mechanical parts. The metal wire material is gathered together andpressed to be in contact with each other, the metal wire material is metallurgically bonded, and the metal wire porous material with communicated pores is obtained; the metal wire porous material isprocessed into the porous fluid lubricated mechanical parts, and the porous fluid lubricated mechanical parts are assembled to corresponding positions in a mechanical structure and fixed; and then thefluid passes through pores of the porous fluid lubricated mechanical parts from one sides of the porous fluid lubricated mechanical parts to the other sides of the porous fluid lubricated mechanicalparts and enters gaps between the porous fluid lubricated mechanical parts and the other parts to form fluid lubricated layers, so that the friction and wear between every two parts with relative motions are reduced or eliminated. The application has the beneficial effects that the production process flow is short, the total production cost of raw materials and bearings is low, the efficiency is high, the process procedures are stable, and mass production is realized easily.

Description

technical field [0001] The invention relates to the technical field of metal porous materials applied to fluid lubrication, in particular to the application of metallurgy-bonded porous materials with metal wires in the manufacture of fluid lubricated mechanical parts. Background technique [0002] Hydrostatic lubrication refers to the use of an external fluid pressure source (such as an oil supply device, compressed gas) to transport a fluid lubricant with a certain pressure into the fluid chamber of the support to form a fluid lubrication film with sufficient static pressure to bear the load , and separate the surface such a lubrication state, also known as external pressure lubrication. If you pressurize air into the bearing through special channels or porous surfaces of the bearing, you can separate the journal from the bearing, which is how air-lubricated air bearings work. It can be seen that air bearings are fluid lubricated bearings. Air bearings use gas as a lubric...

Claims

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Application Information

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IPC IPC(8): B22F3/11B22F3/26
Inventor 周照耀
Owner SOUTH CHINA UNIV OF TECH