Device for self-nanometerization of the surface of rod-shaped metal materials

A metal material, self-nanoization technology, applied in the field of metal material processing, can solve the problems of inability to handle complex shape test pieces, difficulty in working on the back of the test piece, difficulty in ensuring uniformity, etc., to achieve simple and practical equipment construction, uniform processing quality, Overcome the effect of uniform surface treatment

Inactive Publication Date: 2017-02-22
南通河海大学海洋与近海工程研究院 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these two devices have disadvantages due to their structural characteristics: due to the large diameter of the projectiles used, they cannot handle specimens with complex shapes, and are generally suitable for processing thin plate specimens with a side length of about 100mm.
The projectiles in this equipment belong to the fast hitting mode, which is similar to one-way vibration; It is suitable for flat plates, but it is difficult to ensure the uniformity of the overall processing of metal materials with irregular surface

Method used

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  • Device for self-nanometerization of the surface of rod-shaped metal materials
  • Device for self-nanometerization of the surface of rod-shaped metal materials
  • Device for self-nanometerization of the surface of rod-shaped metal materials

Examples

Experimental program
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Effect test

Embodiment 1

[0040] Such as Figure 1-5 , as shown in 9, the rod-shaped metal material surface self-nanometerization device includes a metal cylinder 2, a driving device, baffles 3 on both sides, a screw tightening device 6, clamps 7 on both sides, and projectiles 5;

[0041] The metal cylinder 2 is integrally ring-shaped and has no bottom surface. Its opening surface is in smooth and close contact with the baffles 3 on both sides so that a closed space is formed between the metal cylinder and the baffles on both sides. The screw tightening device 6 is used to adjust the The distance between the baffles, so that the metal cylinder 2 can be embedded and attached to the baffles 3 on both sides. The metal cylinder is provided with an opening device 8 and a lock ring 9. The opening device 8 is used to load the projectile 5, and the lock ring 9 is used to fix the opening device 8 on the metal cylinder 2 after loading the projectile, and the diameter of the projectile 5 is 0.8-3mm;

[0042] The...

Embodiment 2

[0049] Such as Figure 6-10 As shown, the self-nanometerization device on the surface of the rod-shaped metal material includes a metal cylinder 2, a driving device, baffles 3 on both sides, a screw tightening device 6, clamps 7 on both sides, and projectiles 5;

[0050] The clamps 7 on both sides are respectively attached to the baffle plates 3 on both sides, and are used to clamp the rod-shaped metal to be processed, and the distance between the clamps on both sides is adjustable;

[0051] The driving device drives the metal cylinder 2 to deviate a little from the center of the circle around the inside of the cylinder. 1 Do high-speed revolution, O 1 At the same time, it is also the axis of the bar metal to be processed;

[0052] Described driving device comprises frequency conversion motor 1, V-belt 15, eccentric turntable 16, vertical slider 17, vertical slider device 18, horizontal slider 19, horizontal slider device 20, described eccentric turntable 16 inner side is pr...

Embodiment 3

[0057] The surface nano-processing of the rod-shaped metal is completed using the device in Example 1.

[0058] Rod-shaped metal material: a light round steel bar Q235B with a diameter of 16mm and a length of 200mm. Main elements: Content Carbon C: ≤0.12%~0.20%; Silicon Si: ≤0.3%; Manganese Mn: ≤0.3%~0.7%; Sulfur S: ≤0.045%; Phosphorus P: ≤0.045%; Content ≤ 0.30%; Nickel Ni: Allowable residual content ≤ 0.30%; Copper Cu: Allowable residual content ≤ 0.30%.

[0059] Equipment: The device adopts YVP132S-4-5.5KW variable frequency speed regulating motor, which is used to drive the four-bar transmission mechanism of the hinge, so that the connecting rod drives the metal cylinder to perform high-speed revolution. The horizontally placed metal cylinder and the opening device are made of H13 hot work die steel, prepared by machining and heat treatment, with a hardness of HRC56. The metal cylinder has a radius dimension of 9 cm and a thickness of 1 cm. The smooth contact parts betw...

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Abstract

The invention discloses a rod-shaped metal material surface self-nanocrystallization device. The rod-shaped metal material surface self-nanocrystallization device comprises a metal cylinder, a driving device, baffles on the two sides, a baffle adjusting device, fixtures on the two sides and projectiles, wherein the whole metal cylinder is through in a ring shape, no bottom face exists, a closed space is formed between the metal cylinder and the baffles on the two sides, and a projectile loading device is arranged on the metal cylinder; the fixtures on the two sides are attached to the baffles on the two sides respectively, the driving device drives the metal cylinder to conduct high-speed revolution surrounding one point O1 deviated from the circle center in the metal cylinder, and meanwhile the O1 is also the shaft center of the rod-shaped metal to be machined. The rod-shaped metal material surface self-nanocrystallization device has the advantages that a simple mechanical device and a power device are adopted, the surface of a machined sample is uniformly impacted continuously and periodically by a plurality of spherical metal projectiles obtaining enough kinetic energy, therefore, crystalline grains in a certain depth range on the surface of the sample generate violent severe plastic deformation and are refined to a nanometer scale, a special microstructure with the crystalline grain size distributed in a gradient mode is obtained, and finally the material surface nanocrystallization modification is achieved.

Description

technical field [0001] The invention relates to a self-nanometerization device on the surface of a rod-shaped metal material, which belongs to the field of metal material processing. Background technique [0002] Self-nanometerization (SNC) of metallic materials is a brand-new concept first proposed by Lu Ke, Institute of Metal Research, Chinese Academy of Sciences in 1997, that is, to form a surface layer with nanostructures on the surface of the material itself. The nano surface layer has excellent performance and has great industrial application value for the surface modification of traditional engineering materials. At present, the research of surface self-nanoization mainly focuses on the method of mechanical processing. [0003] The surface machining method mainly refines the grains through surface plastic deformation and dislocation movement, that is, the external load repeatedly acts on the surface of the material, causing the surface structure to produce strong pla...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21D7/06
Inventor 游凯宋丹蒋金洋江静华马爱斌
Owner 南通河海大学海洋与近海工程研究院
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