Technical News

In skateboarding, the skateboard, as a core piece of equipment, is constantly subjected to impact, friction and wear, making it highly prone to problems such as damage to the board surface, breakage of the support and wear of the bearing housing. The traditional repair methods either have poor repair effects, making it difficult to restore the original performance of the skateboard, or directly replace the components, resulting in high costs and waste of resources. The emergence of laser cladding repair technology for skateboards has provided a brand-new solution to these problems. With its advantages of high precision, high performance and low loss, it has become an innovative technology in the field of skateboard repair.

I. Principles of Laser Cladding Repair Processing Technology for Skateboards

Laser cladding technology is an advanced surface modification and repair technique. Its core principle is to use a high-energy-density laser beam as a heat source to simultaneously heat and melt specific cladding materials (such as metal powders, alloy wires, etc., with the appropriate type selected based on the material of the damaged parts of the skateboard) and the surface material of the damaged area of the skateboard. Under the action of the laser beam, the cladding material forms a good metallurgical bond with the base material (the damaged part of the slide plate). After the laser beam is moved away, the molten material cools and solidifies rapidly, forming a cladding layer with excellent performance at the damaged part of the slide plate.

The principles applied to the repair of different components of a skateboard vary slightly. For instance, when repairing the wear of skateboard brackets (typically made of aluminum alloy), alloy powder with good compatibility with aluminum alloy is selected as the cladding material. The laser beam precisely acts on the worn surface, causing the powder to melt and fuse with the surface of the bracket, filling the wear gap and restoring the dimensional accuracy and mechanical properties of the bracket. For the impact damage on the edge of the skateboard surface, if the surface is made of carbon fiber, carbon fiber reinforced composite cladding materials can be selected. The gap can be repaired through laser cladding technology to ensure the strength and flatness of the surface.

Ii. Advantages of Laser Cladding Repair Processing for Skateboards

1. High repair accuracy ensures the performance of the skateboard

Laser cladding technology uses a computer numerical control system for precise control. The focusing diameter of the laser beam can be as small as tens of micrometers, which can precisely act on the damaged part of the skateboard without causing damage to the surrounding intact area. The dimensional accuracy of the repaired components can reach ±0.01mm, with a low surface roughness. It can meet the usage requirements of the skateboard without a large amount of subsequent mechanical processing, restoring the original sliding stability, flexibility and controllability of the skateboard to the greatest extent, allowing skateboard users to have a usage experience similar to that of a new skateboard.

2. Enhance component performance and extend service life

The cladding layer material can be selected according to the usage requirements of the skateboard components, such as choosing alloy materials with high strength, high wear resistance and corrosion resistance. The cladding layer formed by these materials adheres closely to the substrate, not only repairing damaged areas but also significantly enhancing the overall performance of the components. For instance, after laser cladding repair, the wear resistance of the skateboard bearing housing is significantly enhanced, which can effectively reduce the wear between the bearing and the housing, extend the service life of the bearing and the bearing housing, and lower the maintenance cost and replacement frequency of the skateboard.

3. Energy conservation and environmental protection, reducing resource waste

Compared with the traditional component replacement repair method, laser cladding repair processing only consumes a small amount of cladding materials to achieve the repair of damaged parts of the skateboard, greatly reducing the waste materials generated due to component replacement and lowering resource waste. Meanwhile, during the laser cladding process, energy is concentrated, the heat input is low, and the pollution to the environment is relatively small, which meets the energy conservation and environmental protection requirements of modern industrial production and promotes the development of the skateboard industry towards a green and sustainable direction.

Iii. Laser Cladding Repair Processing Flow for Skateboards

1. Preliminary detection and evaluation

First, conduct a comprehensive inspection of the damaged skateboard to identify the damaged components (such as the board surface, support, wheel bushings, etc.), the type of damage (such as wear, cracks, notches, deformation, etc.), and the degree of damage (such as wear depth, crack length, notch size, etc.). Through professional testing equipment (such as ultrasonic flaw detectors, metallographic microscopes, etc.), the material properties and internal structure of the damaged parts are analyzed to assess whether laser cladding repair technology is suitable and determine the performance targets after repair, providing a basis for the formulation of subsequent repair plans.

2. Surface pretreatment

Pre-treating the surface of the damaged parts of the skateboard is a crucial step to ensure the quality of laser cladding repair. Firstly, to remove impurities such as oil stains, dust and rust from the damaged surface, methods like solvent cleaning and ultrasonic cleaning can be adopted. Then, for the areas with cracks, crack cleaning is required. Methods such as mechanical grinding and electrical discharge machining should be adopted to remove the cracks and the fatigue layer around them, preventing crack propagation after repair. Finally, roughen the damaged surface (such as sandblasting or grinding) to increase the surface roughness and enhance the bonding strength between the cladding material and the substrate.

3. Develop a repair plan

Based on the results of the previous detection and evaluation, and in combination with the usage requirements of the skateboard components, a detailed laser cladding repair plan is formulated. Determine the type, composition and form (powder or wire) of the cladding material, and select the matching cladding material based on the substrate material and the repair performance target. Determine the process parameters of laser cladding, including laser power, scanning speed, spot size, powder feeding amount (or wire feeding speed), cladding layer thickness, etc. These parameters need to be determined through multiple tests and optimizations to ensure the quality and performance of the cladding layer. At the same time, plan the cladding path to ensure that the laser beam can evenly and comprehensively cover the damaged area.

4. Laser cladding processing

According to the formulated repair plan, start the laser cladding equipment for processing. Fix the pre-treated damaged parts of the skateboard on the workbench, adjust the equipment parameters to focus the laser beam on the damaged area, and at the same time, precisely deliver the cladding material to the laser action area through the powder feeding device (or wire feeding device). Under the heating effect of the laser beam, the cladding material rapidly melts with the surface of the substrate, forming a molten pool. As the laser beam moves along the preset path, the molten pool rapidly cools and solidifies, forming a continuous cladding layer. During the cladding process, the real-time monitoring system is used to observe the cladding process, and the process parameters are adjusted in a timely manner to ensure the cladding quality.

5. Subsequent processing and quality inspection

After the laser cladding processing is completed, subsequent treatment is carried out on the repaired skateboard components. First, carry out cooling treatment to allow the components to cool down slowly to room temperature to prevent internal stress caused by excessive cooling speed, which could lead to the formation of cracks. Then, mechanical processing (such as turning, milling, and grinding) is carried out on the surface of the cladding layer as required to ensure that the dimensional accuracy and surface roughness of the components meet the design requirements. Finally, a comprehensive quality inspection is carried out on the repaired components, including appearance inspection (checking whether the cladding layer has defects such as pores, cracks, and inclusions), dimensional inspection (using calipers, micrometers, three-coordinate measuring machines, etc. to measure the dimensional accuracy of the components), and performance inspection (such as hardness testing, tensile testing, wear resistance testing, etc.) Test whether the mechanical properties of the cladding layer meet the requirements. If problems are found during the inspection, timely repairs should be carried out until the quality standards are met.