Unlock instant, AI-driven research and patent intelligence for your innovation.

Mechanical method and special mechanical equipment for forming nano structure

A nanostructure and mechanical method technology, applied in the field of metal surface processing, can solve the problems of no nanostructure, a large number of projectiles, fixed angle, etc., and achieve the effects of improving diffusion properties, reducing processing temperature, and reducing time.

Inactive Publication Date: 2004-12-15
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
View PDF2 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of the traditional shot peening method is that the projectiles cannot be reused immediately, but a recirculation equipment is needed to realize the circular supply and injection of the projectiles. If there is no recirculation equipment in the whole process, a large amount of projectiles will be required; Each incident jet is unidirectional and has a fixed angle; in addition, from the obtained results, the surface of the surface-treated parts does not contain or rarely has nanostructures
Therefore, it is difficult to obtain a certain depth of nanostructures on the material by using the existing processing methods, for example, the surface layer of nanostructures with a depth of several to tens of microns

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Mechanical method and special mechanical equipment for forming nano structure
  • Mechanical method and special mechanical equipment for forming nano structure
  • Mechanical method and special mechanical equipment for forming nano structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A mechanical method for forming a nanostructure on the surface of a metal part, comprising: performing a surface treatment on the metal part to obtain a surface layer with a nanostructure, specifically:

[0033] 1) A large number of spherical projectiles are placed in a suitable closed space, and the projectiles hit each wall board of the closed space in the reciprocating vibration, one of the wall boards is (or is fixed with) a metal part to be processed;

[0034] 2) The projectile vibrates cyclically in the enclosed space in a direction perpendicular to the surface of the metal part to be treated with a variable incident angle, so that the metal part forms a nanostructure surface layer;

[0035] 3) According to the physical characteristics of the projectile, the speed of the cyclic motion and the frequency and amplitude of vibration are determined, so that the projectile can obtain enough kinetic energy to make the metal parts produce nanostructures;

[0036] As shown...

Embodiment 2

[0048] The difference from Embodiment 1 is that the vibration generating device 70 adopts an ultrasonic generator.

[0049] In the present embodiment, the ultrasonic generator installed on the support arm 60 is used as the vibration generating device 70, and the amplitude of 10~40KHz frequency and 5-900 micron is transmitted to the support arm 60 to replace by the motor 75, the inertial member 74 and the vibration generating device 70. The vibration generating device 70 composed of axis 3, in this case, can make good use of the frequency from the ultrasonic wave, adjust its vibration duration with a real-timer, and adjust its vibration frequency with a frequency converter to keep the projectile speed at 3-100 Between m / s; the diameter of a completely spherical projectile is selected between 300 μm and 3 mm according to the thickness of the desired nanostructured surface layer; for a determined projectile size and a determined component material, the duration of the surface trea...

Embodiment 3

[0055] The difference from Embodiment 1 or 2 is that this embodiment is an improved type with external stress added.

[0056] like Figure 2A , 2B As shown, the surface to be treated can be carried out in a stressed state while the metal part 10 is secured with a suitably clamped stressing device 21 . This stress device 21 has a base plate 21.2, and the pressure plate flange joint 21.1 is contained on the base plate 21.2, inserts and is used for fastening the metal part 10 next to the protective pad 21.3 between the metal part 10 and the base plate 21.2. A rod 21.4 passes through the through-holes A21.21 and B21.31 of the base plate 21.2 and the pad 21.3 respectively, and exerts a force on the metal part 10 fixed by the flange. The through-hole of the rod 21.4 and the base plate 21.2 The hole B21.31 is threaded, and the rod 21.4 is fastened on the bottom plate (21.2) to obtain the pressure, and its stress value is not greater than the yield stress of the metal parts. Then, t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The present invention relates to mechanical method of forming nanometer structure and its special equipment. Method: surface treatment on metal parts: (1). balls in closed space to impact closed space wall plate by circulating and reciprocating vibration; (2). balls in closed space to vertically impact the treated metal part surface to form nm structure surface layer; (3). according to the physical characteristics of ball to determine the circulating movement speed and vibration frequency, amplitude to produce kinetic energy capable of forming nm structure on metal surface. Equipment includes at least one closed space, a vibration generation device, vibration absorber etc.

Description

technical field [0001] The invention relates to metal surface processing technology, in particular to a mechanical method and special mechanical equipment for forming nanostructures on metal parts. Background technique [0002] Typical ultrafine grains, usually smaller than 100 nm, exhibit characteristics of nanocrystalline materials in at least one dimension. These materials can be prepared by known methods, such as IGC (Inert Gas Condensation), SPD (Severe Plastic Deformation), etc., but these materials usually have the disadvantages of many pore-like defects and easy contamination. [0003] Using surface processing technology, the grains on the surface of metal parts can be refined, and may reach the nanometer scale. The traditional metal surface processing method uses compressed air to spray small-sized projectiles (such as metal) on the surface of the material at a speed of 5 to 100 m / s, and ultrasonic shot peening (the projectile speed is between 5 and 20 m / s) Betwee...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C21D7/06
CPCC21D7/06C21D2201/03
Inventor 卢柯吕坚
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI