Laser cladding repair equipment and method for irregular curved surfaces of Invar alloy molds

A laser cladding, irregular technology, applied in the direction of metal material coating process, coating, etc., can solve problems such as unqualified, reduce production costs, good shape and performance matching, reduce residual stress and deformation. Effect

Inactive Publication Date: 2020-04-24
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

[0005] Aiming at the unqualified or failure problems in the manufacture and use of Invar alloy molds, the present invention proposes a laser cladding repair equipment and method for irregular curved surfaces of Invar alloy molds. The mold is repaired, and a 3D laser scanning link is added before the repair, and a robot is used for the cladding process. After the cladding is completed, the 3D laser scanner is used to scan the repaired parts again to check whether the size meets the conditions

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  • Laser cladding repair equipment and method for irregular curved surfaces of Invar alloy molds
  • Laser cladding repair equipment and method for irregular curved surfaces of Invar alloy molds
  • Laser cladding repair equipment and method for irregular curved surfaces of Invar alloy molds

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the accompanying drawings. A laser cladding repair equipment and method for irregular curved surfaces of Invar alloy molds, characterized in that the method includes the following steps:

[0024] For the irregular Invar alloy mold surface 3 whose size is 40mm high, 120mm long, and 120mm wide. Clean it first: finely process the sample with grinding equipment to remove surface oil, rust and other impurities, use acetone to clean the workpiece to completely remove the surface oil, and then wipe the workpiece with alcohol until the alcohol evaporates. The cladding powder used is Invar alloy spherical powder, which is obtained by ball milling Invar alloy rods, and its particle size is between 50 μm and 150 μm.

[0025] Connect and debug the 3D laser scanner 1 with the software measurement system (Polyworks) in the model generation module of the area to be repaired, use the 3D scanner to measure the th...

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Abstract

The invention relates to laser cladding repair equipment and method for irregular curved surfaces of Invar alloy molds. Aiming at unqualified or invalid products in the production, manufacturing and use processes of Invar alloy molds, the curved surfaces of the unqualified or invalid Invar alloy molds are repaired in combination with reverse engineering and a laser cladding technology, so that notonly is the production and manufacturing cost reduced, but also the service life of the molds is prolonged. The repair equipment comprises a 3D laser scanner, a robot with a coaxial powder feeding nozzle, a laser, a laser water cooler, an adjustable powder feeder, a monitor, a control system and the like. The repair method comprises the following steps: (1) performing 3D scanning to obtain a to-be-restored region model; (2) designing a cladding scheme; (3) carrying out a cladding experiment for repairing; and (4) checking the size of the repaired part.

Description

technical field [0001] The invention belongs to the field of laser cladding repair, in particular to a laser cladding repair equipment and method for irregular curved surfaces of Invar alloy molds. Background technique [0002] Invar alloy has a thermal expansion coefficient similar to that of composite materials, so it is widely used as a mold material for aircraft composite structural parts. In the process of making composite materials, Invar alloy molds are subjected to high temperature and high pressure thermal cycles and corrosion, and failures such as cracks and wear will inevitably occur. Therefore, there is an urgent need for an effective repair method to achieve the purpose of prolonging the service life of the mold, and at the same time repair the unqualified parts in the production process of the Invar alloy mold to save costs. [0003] At present, welding, thermal spraying, spray welding and other methods are widely used to repair failed parts, but there are sti...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10
CPCC23C24/103
Inventor 占小红冯宇王磊磊高奇玉齐超琪
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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