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Laser molten overlying process of thin-walled cylindrical device

A laser cladding, thin-walled cylinder technology, used in laser welding equipment, manufacturing tools, metal processing equipment, etc., can solve problems such as bending and difficult to meet use requirements, and achieve uniform heat input distribution, small deformation, and comprehensive performance. Effect

Inactive Publication Date: 2008-06-25
SHENYANG DALU LASER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This technology allows for faster heat transfer while reducing any damage caused due to thermal stress on the part being repaired. It achieves this through an evenly distributed heat source throughout it's operation, which makes it easier to control temperature accurately without causing excessive distortion or warping over large areas. Overall, these technical improvements improve overall efficiency and quality of manufacturing processes involving complex shapes such as those used in turbines engines.

Problems solved by technology

The technical problem addressed by this patented method for improving metal joining between materials that are subjected to high temperatures or have complicated shapes like those used in manufacturing processes involves ensuring stable joint quality when applying lasers on these types of material surfaces without causing damage from excessive temperature exposure.

Method used

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  • Laser molten overlying process of thin-walled cylindrical device
  • Laser molten overlying process of thin-walled cylindrical device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Embodiment 1 hollow roll

[0012] Roller Dimensions:

[0013] Diameter: φ220,

[0014] Roll length: 1500mm,

[0015] Wall thickness: 15mm.

[0016] A two-zone cladding process is adopted. The starting point of the spiral line is 211, 221, 212, 222..., the distribution diagram is as follows figure 1 shown.

[0017] Laser cladding parameters are:

[0018] Spot diameter: 2mm;

[0019] Scanning speed: 15mm / s;

[0020] Power: 2000W;

[0021] Lead: 1500mm.

Embodiment 2

[0022] Embodiment 2 hollow roll

[0023] Roller Dimensions:

[0024] Diameter: φ500,

[0025] Roll length: 3750mm,

[0026] Wall thickness: 18mm.

[0027] The cladding process in eight zones is adopted. The starting points of the spiral line are 211, 221, 231, 241, 251, 261, 271, 281, 212, 222, 232, 242, 252, 262, 272, 282..., the distribution diagram is as follows figure 2 shown.

[0028] Laser cladding parameters are:

[0029] Spot diameter: 5mm;

[0030] Scanning speed: 40mm / s;

[0031] Power: 5000W;

[0032] Lead: 3750mm.

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Abstract

The invention provides a laser cladding technology for a thin-wall cylindrical element. The technical parameters of the invention are that the dimension diameter of a cladding pool is 2 to 5mm, a scanning speed is 15 to 40mm/s; a power is 2,000 to 5,000W and the invention carries through cladding according to a screw line. The invention is characterized in that a starting point of each screw line alternatively carries through according to a circle subarea and the area order keeps an included angle as big as possible. Therefore, the heating time in the cladding process is extremely short, the heat input distribution is relatively dispersed, while the cooling time is long; consequently the deformation of parts is smaller. The laser cladding technology for a thin-wall cylindrical element provided by the invention has the advantages that as the heat input distribution is uniform in the cladding process, the heating time is extremely short and the cooling time is long compared with other cladding methods, the deformation of parts is smaller and the comprehensive performances of a thin-wall cylinder slender rod after repaired are remarkably better than that of the other methods.

Description

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Claims

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Application Information

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Owner SHENYANG DALU LASER TECH
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