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Laser cladding bonding-based cutter and workpiece diffusion couple making method

A technology of laser cladding and diffusion couple, applied in the field of mechanical and material science, to reduce the experimental cost and shorten the experimental period.

Inactive Publication Date: 2015-11-18
SHANDONG UNIV
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention realizes the efficient preparation of the tool and the workpiece diffusion couple through the laser cladding method. During the preparation process, the high accuracy of the laser overcomes the influence of the relative oxidation of the contact surface of the tool and the workpiece in the prior art due to the change of the clamping force. many disadvantages

Method used

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  • Laser cladding bonding-based cutter and workpiece diffusion couple making method
  • Laser cladding bonding-based cutter and workpiece diffusion couple making method

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Embodiment 1

[0035] Embodiment 1: as figure 1 As shown, a method for preparing a diffusion couple based on laser cladding bonding of a cutting tool and a workpiece comprises the following steps:

[0036] A. Select the cemented carbide tool YG6 from Zhuzhou Cemented Carbide Factory as the tool sample 1, and use the gray cast iron HT250 for the cylinder block of the Weichai Power Engine as the workpiece sample 2.

[0037] B. Cut the tool sample 1 into a trapezoidal structure of 16mm×8mm×6mm by wire cutting, and cut the workpiece sample 2 into a trapezoidal structure of 16mm×8mm×4mm by wire cutting;

[0038] C. Cut the sample obtained in step A and step B for the second time, so that the two samples after cutting can form at least one groove or cavity after lamination, which is used to place the cladding powder, so that the two samples can be in a metallurgical state. hold together firmly;

[0039] D. Carry out rough grinding and fine grinding on the grinding machine for the surface to be b...

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Abstract

The invention relates to a laser cladding bonding-based cutter and workpiece diffusion couple making method. The method mainly comprises the following steps: 1, cutting a cutter or blade made of a known material to form a sample, and allowing the cut sample to have at least one groove or square cavity; 2, cutting a workpiece to be tested to form a sample, and laminating the cut sample to the sample obtained in step 1 to realize at least one common groove or square cavity; 3, grinding and polishing obtained two samples to make the two samples respectively have at least one polished surface; 4, laminating the polished surfaces of the two samples, clamping and fixing the two samples by using a clamp, and placing a cladding material in the groove or square cavity formed by the two samples; 5, bonding the two samples through a laser cladding technology to form a diffusion couple; 6, cleaning the produced diffusion couple, and carrying out heating and heat insulation in a heat insulation furnace; and 7, taking out the heat insulated diffusion couple, taking out a surface oxidation layer, polishing and cleaning, taking the core of the diffusion couple, and carrying out sample analysis.

Description

technical field [0001] The invention relates to the fields of machinery and material science, in particular to a method for preparing a diffusion couple of a cutting tool and a workpiece based on laser cladding bonding. Background technique [0002] During the cutting process, due to the relatively high temperature in the cutting zone, the temperature in high-speed cutting processing is as high as 1000 °C. The high temperature effect causes mutual diffusion of elements between the tool material and the workpiece material, resulting in tool wear. The surface of the tool is always in contact with the surface of the workpiece that has just been cut, especially for some chemically active workpiece materials, which have a strong affinity with the tool material, and the chemical elements on the contact surface between the tool material and the workpiece material may undergo mutual diffusion. It leads to changes in its chemical composition, which affects the cutting performance of ...

Claims

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Application Information

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IPC IPC(8): G01N13/00G01N1/32
Inventor 张松栾晓娜吕盈
Owner SHANDONG UNIV
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