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Laser cladding rolling composite machining technology and device

A technology of laser cladding and composite processing, which is applied in the direction of metal material coating process, manufacturing tools, other manufacturing equipment/tools, etc., can solve problems such as cracks, residual tensile stress of laser cladding layer, coarse grains, etc., and achieve reduction Expansion rate, production efficiency, environmental protection, and fatigue life extension effect

Pending Publication Date: 2017-08-04
JIANGSU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: In order to solve the problems of residual tensile stress, coarse grains and cracks in the laser cladding layer in the prior art, a laser cladding rolling composite processing technology and device are now provided

Method used

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  • Laser cladding rolling composite machining technology and device
  • Laser cladding rolling composite machining technology and device
  • Laser cladding rolling composite machining technology and device

Examples

Experimental program
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Effect test

Embodiment 1

[0041] Such as Figure 1-3 As shown, a laser cladding and rolling composite processing device is used for cladding the cladding part 6 to form a cladding layer and rolling the cladding layer. The device includes:

[0042] Laser cladding head 1, the laser cladding head 1 is used to conduct the laser beam;

[0043] The robot, the robot includes a sliding system 2 and a manipulator 3 arranged on the sliding system 2, the sliding system 2 is used to drive the manipulator 3 to move along a straight line, and the laser cladding head 1 is clamped on the manipulator 3;

[0044] The outer circular rolling knife 4 is used to apply radial pressure to the cladding layer;

[0045] And the horizontal lathe 5, the outer circular rolling knife 4 is fixed on the tool rest 5-1 of the horizontal lathe 5, and the three-jaw chuck 5-2 of the horizontal lathe 5 is clamped on one end of the cladding part 6, and the horizontal The tip 5-3 of the lathe 5 touches the other end of the cladding part 6, ...

Embodiment 2

[0065] A laser cladding and rolling composite processing process, the process is: the laser beam transmitted by the laser cladding head 1 is irradiated on the surface of the cladding part 6, the cladding part 6 rotates, and the laser cladding head 1 moves along the cladding part 6 Move axially to form a cladding layer on the surface of the cladding part 6. At the same time, the outer cylindrical rolling knife 4 applies a certain pressure to the cladding layer along the radial direction of the cladding part 6 under the action of an external force to obtain a modified cladding layer. Rolling is performed while cladding, and the outer peripheral surface of the cladding part 6 is a peripheral surface.

[0066] The process specifically includes the following steps:

[0067] a. The cladding part 6 is polished, cleaned and dried in sequence;

[0068] b. Then use the three-jaw chuck 5-2 and the top 5-3 of the horizontal lathe 5 to clamp the dried cladding part 6;

[0069] c. The las...

Embodiment 3

[0072] Taking the laser cladding of aluminum alloy shaft as an example, the above-mentioned laser cladding-rolling composite processing technology is explained:

[0073] First use sandpaper to polish the φ30×300mm ZL104 aluminum rod, then degrease it with acetone, then dry it with hot air, install the pretreated ZL104 aluminum rod on the CNC lathe CK6140, use three-jaw chuck 5-2 and top 5 -3 clamping, the outer circular rolling knife 4 adopts hard alloy single-roller outer diameter roller rolling knife, the radial pressing amount of the outer cylindrical rolling knife 4 is 0.03mm, and the laser cladding head 1 is along the aluminum alloy shaft The axial feed rate is 0.3mm / r, and the speed of the CNC lathe spindle is 7.64r / min;

[0074] The laser cladding powder is ZL104 aluminum alloy spherical powder with a particle size of 75-150 μm. Before cladding, the aluminum alloy powder must be dried under vacuum conditions at about 120°C to remove the moisture in the cladding powder; ...

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Abstract

The present invention relates to the technical field of laser processing, in particular to a laser cladding and rolling composite processing technology and device. The cladding head moves along the axial direction of the cladding part to form a cladding layer on the surface of the cladding part. At the same time, the outer circular rolling knife applies a certain pressure to the cladding layer along the radial direction of the cladding part under the action of external force to obtain a modified Cladding layer, the device includes: a laser cladding head, the laser cladding head is used to conduct the laser beam; a robot, the robot includes a sliding system and a manipulator set on the sliding system; Apply radial pressure; the outer circular rolling knife is fixed on the tool holder of the horizontal lathe. During the laser cladding process, the present invention uses a certain pressure introduced radially to improve the structure and performance of the laser cladding layer, and has the advantages of operation Convenience, high production efficiency and environmental protection.

Description

technical field [0001] The invention relates to the technical field of laser processing, in particular to a laser cladding and rolling composite processing technology and device. Background technique [0002] Laser cladding technology has the characteristics of small heat-affected zone, low dilution rate, fast cooling and metallurgical bonding between cladding material and substrate, so it has important application value in aerospace, automobile, mold, medical and chemical industries. However, on the one hand, the cladding layer has residual tensile stress due to uneven cooling; on the other hand, due to the high temperature of the molten pool, the grains of the cladding layer are coarse; in addition, defects such as pores and cracks also appear in the cladding layer. At present, these shortcomings limit the vigorous promotion and application of laser cladding technology. [0003] As a surface finishing and surface strengthening technology, rolling processing uses high-hard...

Claims

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Application Information

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IPC IPC(8): B23P23/04B23P15/00C23C24/10B23P9/02
CPCB23P23/04B23P9/02B23P15/00C23C24/10
Inventor 葛茂忠陈逸范真杨晓红朱福先杨超卢雅琳杨林吉庭婷杨刚
Owner JIANGSU UNIV OF TECH
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