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Laser surface modification and laser remanufacturing
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Laser surface modification and laser remanufacturing

Laser surface modification and laser remanufacturing

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(Summary description)The core technology constitutes laser surface modification and laser remanufacturing performance by the material, process control and equipment precision to ensure. Laser surface modification and laser remanufacturing technology with a small heat-affected area, coating performance can be gradient function control, cladding and substrate metallurgical combination. Laser surface modification and laser remanufacturing is the process of addition, is to achieve "the good steel to do on the knife edge," the best process.

Laser surface modification and laser remanufacturing

(Summary description)The core technology constitutes laser surface modification and laser remanufacturing performance by the material, process control and equipment precision to ensure. Laser surface modification and laser remanufacturing technology with a small heat-affected area, coating performance can be gradient function control, cladding and substrate metallurgical combination. Laser surface modification and laser remanufacturing is the process of addition, is to achieve "the good steel to do on the knife edge," the best process.

Information

Core Technology Components

Laser surface modification and laser remanufacturing performance by the material, process control and equipment precision to ensure.

Laser surface modification and laser remanufacturing technology with a small heat-affected area, the coating performance can be gradient function control, cladding and substrate metallurgical combination.

Laser surface modification and laser remanufacturing is the process of addition, is to achieve the "good steel to do on the knife edge," the best technology means.

 

Laser surface modification technology

 

 

1.Laser cladding technology

       Laser cladding is a laser as a heat source, in the existing parts of the surface of the metallurgical bond into a layer of new performance materials, so that the parts get a new gradient function layer. It is an important means of surface modification of metal materials. The metallurgical principle of laser cladding is the same as the laser material manufacturing, the laser material manufacturing is from scratch, get "structure", laser cladding is on the surface of the existing parts to form a new functional layer, the purpose is "surface modification".

 

Features of laser cladding.

① laser cladding layer and the matrix for metallurgical bonding, bonding strength of not less than 90% of the original matrix material.

The heat affected zone is generally 0.1-0.2mm.

The temperature rise of the substrate during laser processing does not exceed 80℃, and there is no thermal deformation after laser processing.

Laser light energy input density is very high, the energy input rate is much higher than the thermal diffusion rate, the surface melts rapidly, the dilution rate of the cladding layer is very low, generally controlled within 5%, and the original properties of the metal is well maintained.

⑤ The cladding layer and the matrix are without coarse casting organization, the cladding layer and its interface organization is dense, the crystal is small, no holes, inclusions, cracks and other defects.

⑥Laser cladding composite layer organization by the bottom layer, intermediate layer and surface layer consists of characteristic gradient functional materials.

 

2.Laser surface alloying technology

        Laser surface alloying technology is a laser beam and material surface interaction, so that the surface of the material physical metallurgical and chemical changes, to strengthen the purpose. The characteristics of the technology: first, in the material surface alloying of various alloying elements to improve the performance of the material surface; second, the parts need to be strengthened in parts of local processing.

 

3.Laser Surface Enhancement Technology

        Laser surface intensification technology is a new technology that increases the hardness of the metal surface by irradiating the laser beam to the material surface.

4.Laser Haircut Technology

        Laser waxing technology is the use of high heat, high repetition frequency pulsed laser beam in the focus after the negative out-of-focus irradiation to the surface of the rolls to implement preheating and strengthening, after the focus of the focus point incident to the surface of the rolls to form a micro-melt pool, while the side of the blowing device on the micro-melt pool applied to set the pressure and flow rate of the auxiliary gas, so that the molten material in the melt pool according to the specified requirements as far as possible to the edge of the melt pool to form arc-shaped convex table.

5.Laser impact strengthening technology

        Laser impact strengthening technology is the use of strong laser beam generated by the plasma shock wave, improve the metal material fatigue, wear and corrosion resistance of a high-tech.

 

 

Application Examples

 

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