Hydraulic supports are key support devices in the coal mining comprehensive mining process. Due to the harsh conditions in mines, the surfaces of these devices are prone to corrosion and wear, leading to seal failure and creating safety hazards. Therefore, it is essential to enhance the surface of the hydraulic support columns.

Why Placare cu laser is Needed?

Currently, the components of hydraulic supports, such as columns and oil cylinders, often undergo electroplating for surface corrosion resistance. However, electroplated coatings have low bonding strength, are prone to cracking, and have a short service life, necessitating frequent disassembly and repair. This process is labor-intensive and time-consuming.

With the gradual adoption of smart technologies in the coal machinery industry, achieving high-quality, long-service life products is an inevitable trend. This trend places higher demands on the performance and service life of hydraulic support columns. Laser cladding technology, in comparison to electroplating, extends the service life of columns by more than five times, making it an advanced alternative for metal surface treatment.

What is Placare cu laser?

Laser cladding refers to the process in which metal or alloy powder is simultaneously fed and melted by a high-energy laser beam, forming a metallurgically bonded coating on the substrate. This rapid solidification process significantly improves the wear and corrosion resistance of the base material. The laser cladding coating forms a strong metallurgical bond with the substrate, and the optimized coating has a dense microstructure without cracks or pores, offering high toughness. This technology is also environmentally friendly.

Avantajele placării cu laser

Dense, Crack-Free Coatings: Laser cladding results in coatings that are completely dense and free from cracks.

Minimal Heat Input: It minimizes the deformation of the workpiece and is controllable, requiring minimal subsequent machining. The heat-affected zone is small.

Rata de diluție scăzută: The material from the base substrate minimally mixes with the cladding layer, ensuring superior coating properties.

Precise Control of Coating Thickness: The thickness of the cladding layer can be finely controlled.

Rapid Cooling: The quick solidification process allows for the formation of fine crystalline structures or new phases that cannot be achieved through equilibrium states, such as non-stable phases or amorphous states.

Wide Selection of Powder Materials: There are almost no restrictions on powder materials, especially for cladding high-melting-point alloys onto low-melting-point metals.

Selective Cladding: This method reduces material consumption and provides an excellent performance-to-cost ratio.

Long Service Life: Laser-cladded columns have a corrosion resistance service life more than five times longer than standard columns.

Wide Application of Laser Cladding

Greenstone-tech has a strong research and development team and deep technical reserves in laser cladding production. The company serves clients across various industries, including coal mining, oil, automotive, agriculture, and steel manufacturing, earning widespread recognition from customers.

Oil Piston Case

Oil pistons, a key component in oil extraction equipment, operate in extremely harsh environments, enduring high pressures, sandy conditions, and corrosive media while frequently performing reciprocating motions. This leads to severe wear, corrosion, and surface damage, causing a significant reduction in oil extraction efficiency. If pistons fail, it may result in equipment breakdowns, leading to costly repairs and production losses.

By applying advanced laser cladding technology, Greenstone-tech customizes cladding solutions for oil pistons, ensuring high-quality corrosion- and wear-resistant coatings. The precise control of laser cladding parameters guarantees a perfect bond between the coating and the piston base material, forming a strong protective layer.

Comparing data from practical applications, traditional oil pistons require replacement every 2 months due to wear, with each repair costing around 12,000 yuan and requiring at least two days of downtime. In contrast, pistons treated with Greenstone-tech’s laser cladding technology show a six-fold improvement in wear resistance and a four-fold increase in corrosion resistance. The service life extends to over 15 months, with only one repair needed annually, saving over one million yuan per oil extraction site and reducing downtime costs.

Valve Case

In automotive engines, valves are critical components that frequently open and close, facing high-temperature gas erosion, mechanical impacts, and chemical corrosion. In high-performance engines, valves undergo even harsher conditions, leading to wear, burning, and deformation, which severely affects engine performance and reliability.

Greenstone-tech’s laser cladding technology offers an effective solution for valves. By selecting the right cladding materials and utilizing advanced equipment, the company enhances the valve’s ability to withstand high temperatures, wear, and corrosion, significantly improving performance.

In a real-world automotive application, regular valves in engines last for about 100,000 km before requiring replacement due to wear. However, after treatment with Greenstone-tech’s laser cladding, the valve lifespan increases to over 500,000 km. The wear resistance improves fivefold, and the corrosion resistance triples, reducing replacement frequency and lowering maintenance costs by 70%. This solution significantly boosts engine reliability and is highly praised by automotive manufacturers.

Steel Plant Rod Head Case

Steel plant rod heads face extreme operational challenges, frequently exposed to high temperatures, high pressure, and heavy friction. This causes significant wear and tear, affecting production efficiency and increasing the cost of replacements. Greenstone-tech’s laser cladding technology plays a crucial role in extending the service life of rod heads. After cladding, rod heads last at least twice as long as traditional ones, ensuring continuous production and reducing overall costs.

In high-temperature and high-pressure environments, traditional rod heads have an average lifespan of just 28 days and require multiple replacements per month. After laser cladding treatment, the service life extends to 90 days, with only one replacement needed each month. This reduces costs by 67%, saving significant expenses for steel plants.

Concluzie

Laser cladding is an essential technology for enhancing the performance and longevity of various industrial components. By providing superior corrosion and wear resistance, Greenstone-tech’s laser cladding technology improves the reliability and cost-effectiveness of parts in industries such as coal mining, oil extraction, automotive, and steel manufacturing.