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Surface cross-scale composite micro-modeling tool and preparation method

A micro-modeling and cross-scale technology, applied in the direction of manufacturing tools, cutting tools for lathes, turning equipment, etc., can solve problems such as uneven distribution, affecting the effect of friction reduction, and increased chip curling, and achieves enhanced film-base bonding strength , enhance continuous wettability, and increase the effect of occlusal area

Pending Publication Date: 2018-01-09
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This patent has the function of extending the lubricating film to a certain extent, but since the three types of textures are separated from each other, it is difficult for the lubricant to complement each other, which will easily lead to uneven distribution and affect the anti-friction effect
Mechanical Manufacturing Volume 54, No. 622, published "Tool Surface Micro-Texture Design and Cutting Simulation Analysis", which processed a linear micro-pit-micro-groove combined texture on the surface of ordinary tools, and the simulation cutting results showed that the cutting force was reduced. , the chip curl increases, and the sawtooth cutting problem is alleviated, but it is not a coated tool. The integrated gain effect of coating technology and combined texture has not been verified, and the groove adopts micron level. According to the capillary theory, the drainage, drainage, and lubrication effects Both are weaker than nanoscale

Method used

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  • Surface cross-scale composite micro-modeling tool and preparation method
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  • Surface cross-scale composite micro-modeling tool and preparation method

Examples

Experimental program
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Embodiment example

[0036] In conjunction with the accompanying drawings, the implementation examples of the present invention include:

Embodiment

[0037] An embodiment, a surface cross-scale composite micro-shaped tool, the tool material is YG6X hard alloy, the coating is TiAlN hard coating, and the coating method is cathodic arc physical evaporation. The specific steps are:

[0038] (1) Pretreatment: Polish the rake surface of the tool base material to a mirror surface with Ra<0.01, put it in an aqueous solution of 60g / L sodium hydroxide and 75g / L sodium carbonate in sequence, and clean it ultrasonically for 20 minutes at a temperature of 45°C. Remove surface oil and sweat stains, dry fully;

[0039] (2) Laser processing textured tool material surface: Nd:YAG pulsed laser is used to texture the tool material surface, the tool is clamped on the workbench, and the laser is adjusted at a distance of 100 μm from the rake face of the tool to the main cutting edge , from the outside of the blade to the inside of the blade, an array of micro-cavities with a number of columns of 10x10 is processed, and the diameter of the micr...

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Abstract

The invention discloses a surface cross-scale composite micro-modeling tool and a preparation method, and belongs to the technical field of machine manufacturing. The surface of a tool material is subjected to micro-modeling treatment of a recessed cavity morphology, a micron-size recessed cavity and a nanoscale groove are machined in a friction and abrasion sensitive area on the surface of a hardcoating, a combined way that the groove communicates with the cavity is adopted for distribution, and the cross-scale composite micro-modeling coating tool is obtained. In this way, the film-base combined strength of the coating tool is improved, and the wettability and lubrication performance of the surface of the coating tool are improved.

Description

technical field [0001] The invention belongs to the technical field of mechanical manufacturing, in particular to a surface coating cross-scale composite micro-modeling tool and a preparation method. Background technique [0002] In the field of mechanical manufacturing, due to the friction and wear of the tool during processing, the problem is alleviated by coating. The coating acts as a chemical barrier and a thermal barrier. The composition of the coated tool reduces the friction between the tool and the workpiece. Diffusion and chemical reaction, which reduces crescent groove wear. Coated tools have the characteristics of high surface hardness, good wear resistance, stable chemical properties, heat resistance and oxidation resistance, small friction coefficient and low thermal conductivity, and can increase tool life by more than 3 to 5 times compared with uncoated tools during cutting. The cutting speed is 20%~70%, the machining accuracy is improved by 0.5~1 grade, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23B27/00B23P15/00B23P15/28
Inventor 符永宏钟行涛李勇军王浩康正阳黄婷李海波
Owner JIANGSU UNIV
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