Cr3C2-25NiCr

Thermal spraying technology is an advanced process widely used in surface treatment. DG.Cr3C2-25NiCr powder is an important material in this technology, with excellent performance and broad application prospects. This article will introduce the basic information, performance characteristics and application fields of DG.Cr3C2-25NiCr thermal spraying powder in detail.

product details

Basic Information

The chemical composition of DG.Cr3C2-25NiCr powder mainly includes 10% carbon (C), 20.5% nickel (Ni) and the balance of chromium (Cr). The powder is prepared by agglomeration and sintering process to form nearly spherical particles with good fluidity. Its bonding strength exceeds 70MPa and the deposition efficiency is between 30% and 45%, showing good spraying performance. The powder has a bulk ratio of 2.5g/cm³, a particle size range of 12-45 microns, and a flow rate of 30 seconds/50 grams, which is suitable for a variety of spraying processes such as HVAF (high velocity air flame spraying), HVOF (high temperature and high pressure flame spraying) and APS (air plasma spraying). The maximum operating temperature of the coating can reach 800℃, and the hardness range is HV900-1150, ensuring its stability and wear resistance in high temperature environments.

Product Performance

The coating of DG.Cr3C2-25NiCr powder has many excellent properties. First, its anti-oxidation effect is significant and can effectively resist oxidation corrosion in high temperature environments. Second, the coating can withstand sliding wear, abrasive wear, erosion and corrosive wear, and is suitable for various harsh working conditions. In addition, the coating is also resistant to high temperature gas corrosion, high temperature liquid corrosion and high temperature solid corrosion, ensuring its reliability under extreme conditions.

Photograph of supersonic spraying processing (1)

Application Areas

Due to its excellent performance, DG.Cr3C2-25NiCr powder is widely used in many fields. First, at the front end of aircraft engines, the coating can effectively protect engine components and extend their service life. Secondly, on the inner wall of the boiler in a thermal power plant, the coating can resist high temperature and corrosion to ensure the safe operation of the equipment. In addition, key components such as turbine blades and high-pressure valves are often coated with this coating to improve their wear resistance and corrosion resistance.

Spraying process parameters

In the spraying process, it is very important to choose the right spray gun and process parameters. Taking the Lijia kerosene supersonic spray gun as an example, its powder particle size range is 15-45 microns, the barrel size is 8 inches, the kerosene consumption is 25L/h, the oxygen flow rate is 900L/min, the carrier gas flow rate is 7.5L/min, the powder feeding speed is 50-60g/min, and the spraying distance is 320-360mm. These parameters are for reference only. In actual operation, they need to be adjusted accordingly according to different equipment to achieve the best spraying effect.

in conclusion

DG.Cr3C2-25NiCr thermal spray powder has become one of the indispensable materials in modern industry due to its excellent chemical composition and physical properties. Its application in high temperature and high corrosion environment demonstrates the important role of thermal spray technology in improving equipment performance and extending service life. With the continuous advancement of technology, the application field of DG.Cr3C2-25NiCr powder will be further expanded, providing a more solid guarantee for the development of various industries.

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