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Rolling press treating method for surface protruding on metal material

A metal material and processing method technology, which is applied in the field of rolling processing of protrusions on the surface of metal materials, can solve the problems of difficult control, difficult processing, and high requirements, and achieves good controllability of process parameters, prevention of gas pollution, and high reliability. Effect

Inactive Publication Date: 2006-01-04
周柏森 +1
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Problems solved by technology

[0005] The above technologies are all metal surface treatment methods prepared from surface nano-layers by pellet jet bombardment technology. It has shortcomings in meeting the application in a wide range of industrial fields and in the process control of treatment: complex equipment, high requirements, and pellets in the field. During the spraying operation, its trajectory is affected by gravity, so it is difficult to carry out processing at all positions in space; it is difficult to realize the processing of more complex inner and outer surfaces; it is difficult to implement differentiated processing on different parts of the same processing surface and the processing of pellets of different sizes and energies. Difficulty controlling alternate applications

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  • Rolling press treating method for surface protruding on metal material
  • Rolling press treating method for surface protruding on metal material

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Embodiment Construction

[0012] The present invention will be further described in detail below with reference to the accompanying drawings and examples. However, the invention is not limited to the examples given.

[0013] Embodiment 1 of the present invention is to carry out rolling nanocrystallization treatment on the surface of the outer cylindrical surface of the 20 steel annular workpiece.

[0014] Original state: annealed state, average grain size 26um, workpiece size Φ200×20×50, treatment process and control conditions: clean workpiece surface—rolling chamber air pressure 6.67×10 -2 Pa——Three rolling die treatment, pre-rolling processing process: two rolling dies are distributed with protrusions with a diameter of 2mm, and their depth of pressing into the workpiece is 0.02mm, and the other rolling die is distributed with a diameter of 20mm The protrusion, which is pressed into the workpiece at a depth of 0.005mm, and the plastic deformation rate of rolling is 7×10 per second 3 , it takes 13 ...

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Abstract

The treating process of metal material surface with uneven roller includes the following steps: making the rolling mold with uneven surface contact with the workpiece to be surface treated, making the rolling mold and the workpiece move relatively to produce plastic deformation in the surface of the workpiece repeatedly. The said treating process may be completed with available apparatus and technology in high reliability and controllable technological parameters. By means of control technological conditions, the present invention can obtain metal material with nanometer surface or self-alloying surface.

Description

technical field [0001] The invention relates to a processing method for changing the physical and chemical properties of the metal material surface through deformation, in particular to a rolling processing method for protrusions on the surface of the metal material. Background technique [0002] The use of surface processing technology can refine the grains on the surface of metal parts, and may reach nanometer size. It is a traditional treatment method to spray small-sized projectiles at high speed on the surface of metal parts by means of compressed air, which was introduced in the paper of the Journal of Materials Science and Technology (J.Mater.Sci.Technol.1999, Volume 15, No. 3, Page 193) The method of "ultrasonic shot peening", uses the high-frequency (20KHz) vibration of the ultrasonic generator to make the hard ball with a diameter of about 2 mm collide with the surface of the metal sample to make the surface nanometer. [0003] Chinese Invention Patent Application...

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Application Information

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IPC IPC(8): B23P9/04
Inventor 周柏森周辰
Owner 周柏森
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