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Ceramic Rod Flame Spraying Machine, Ceramic Spray Equipment
The ceramic rod flame spraying equipment produced by Beijing CMD Surface Technology Equipment Co.; Ltd. uses ceramic rods (ф6*600mm) as raw materials. The ceramic rods are placed on the flame spray gun. The ceramic rods are fully melted and atomized in the spray gun. The particles in the molten state have high kinetic energy and thermal energy, and are sprayed on the metal or non-metal surface at a high speed of 170m/s to form a hard chemically stable coating. The ceramic rod spraying equipment is different from powder spraying that uses high-temperature airflow to spray small particles out. In the powder spraying process, the powder does not have sufficient residence time in the airflow, so all the ceramic particles cannot be completely melted. The ceramic rod spraying equipment ensures that the particles are fully melted and there is a higher adhesion between the particles, so the ceramic rod coating has a stronger adhesion rate and bonding force, so the ceramic rod spraying thickness can reach more than 3mm.
Ceramic Rod Flame Spraying Machine, Ceramic Spray Equipment
The ceramic rod flame spraying equipment produced by Beijing CMD Surface Technology Equipment Co.; Ltd. uses ceramic rods (ф6*600mm) as raw materials. The ceramic rods are placed on the flame spray gun. The ceramic rods are fully melted and atomized in the spray gun. The particles in the molten state have high kinetic energy and thermal energy, and are sprayed on the metal or non-metal surface at a high speed of 170m/s to form a hard chemically stable coating. The ceramic rod spraying equipment is different from powder spraying that uses high-temperature airflow to spray small particles out. In the powder spraying process, the powder does not have sufficient residence time in the airflow, so all the ceramic particles cannot be completely melted. The ceramic rod spraying equipment ensures that the particles are fully melted and there is a higher adhesion between the particles, so the ceramic rod coating has a stronger adhesion rate and bonding force, so the ceramic rod spraying thickness can reach more than 3mm.
The sprayed parts have excellent wear resistance, high temperature resistance, corrosion resistance, heat insulation and electrical insulation properties due to the protection of ceramic coatings. Ceramic rod flame spraying is a kind of equipment with low cost, stable quality and easy operation the spraying method, the wear resistance of the workpiece after spraying is particularly good. Taking chromium oxide as an example, its wear resistance can reach 8 times that of plasma spraying. And widely used in aircraft engines, space rockets, high-speed wire drawing machine tower wheels, textiles, chemical fiber, light industry, petroleum, petrochemical, chemical, machinery manufacturing, large-scale anti-corrosion projects, etc., and have won unanimous praise.
The sprayed parts have excellent wear resistance, high temperature resistance, corrosion resistance, heat insulation and electrical insulation properties due to the protection of ceramic coatings. Ceramic rod flame spraying is a kind of equipment with low cost, stable quality and easy operation the spraying method, the wear resistance of the workpiece after spraying is particularly good. Taking chromium oxide as an example, its wear resistance can reach 8 times that of plasma spraying. And widely used in aircraft engines, space rockets, high-speed wire drawing machine tower wheels, textiles, chemical fiber, light industry, petroleum, petrochemical, chemical, machinery manufacturing, large-scale anti-corrosion projects, etc., and have won unanimous praise.
Principle of Spraying
The ceramic rod material is atomized by high-pressure air after being melted by a high-temperature flame at 2760ºC. Its molten molecules hit the substrate at an ultra-high speed of 152-244m/s. Because it still remains molten when it hits the surface of the substrate, the molecules and molecules It has very high bonding strength. Using CMD-CS ceramic rod flame spraying equipment, the spraying thickness can reach 0.1-3mm.
Equipment composition:
Equipment composition: ceramic rod flame spray gun, host, oxygen flow meter and acetylene flow meter, spray gun wire feeding adjustment.
Self-prepared by the user: air compressor with a displacement of 1.8m3/min, a pressure of more than 7 kg, an oxygen cylinder, and an acetylene cylinder.
The ceramic rod material is atomized by high-pressure air after being melted by a high-temperature flame at 2760ºC. Its molten molecules hit the substrate at an ultra-high speed of 152-244m/s. Because it still remains molten when it hits the surface of the substrate, the molecules and molecules It has very high bonding strength. Using CMD-CS ceramic rod flame spraying equipment, the spraying thickness can reach 0.1-3mm.
Equipment composition:
Equipment composition: ceramic rod flame spray gun, host, oxygen flow meter and acetylene flow meter, spray gun wire feeding adjustment.
Self-prepared by the user: air compressor with a displacement of 1.8m3/min, a pressure of more than 7 kg, an oxygen cylinder, and an acetylene cylinder.
Introduction to ceramic rods:
The ceramic rod is manufactured by compressing molten ceramic powder to achieve uniform coating quality after spraying. According to different applications, ceramic rods can be divided into the following three categories:
Comparison of various spraying
Performance comparison of ceramic rod spraying\plasma spraying\powder spraying
The ceramic rod is manufactured by compressing molten ceramic powder to achieve uniform coating quality after spraying. According to different applications, ceramic rods can be divided into the following three categories:
- Wear resistance: chromium oxide rods have the best effect. Others such as alumina rods and alumina and titania can also be used.
- Heat resistance: Zirconia rods are the best, which can reach 2482ºC.
- Insulation and anti-corrosion: alumina rod is the best.
Comparison of various spraying
Performance comparison of ceramic rod spraying\plasma spraying\powder spraying
| Performance | Ceramic rod spraying | Plasma spraying | Powder spraying |
| Particle speed (m/s) | 152 -244 | 240 | 30 |
| Air velocity (m3/h) | 71 | 4.2 | 11 |
| Flame/plasma temperatureºC | 2760 | 5500 | 2200 |
| Particle state | Fully melted | Semi-melted or fully melted | Semi-melted or non-melted |
| Intermolecular bonding strength | excellent | Good | bad |
| Wear resistance | 4 times | 1 time | 0.20 times |
| Inject heat into the workpiece | High | Low | High |
| Deposition rate (%) | 57-77 | 20-60 | 50-60 |
| Deposition rate (kg/h) | 0.55-1.0 | 1-2.5 | - |
| Hardness (HV) | 750-1250 | 950-1350 | Low |
| coating thickness (mm) | 3.2 | 0.5 | 1.5 |
| Porosity (%) | 4-8 | 1-8 | 15-20 |
| Complexity of operation | easy | complex | easy |
| Preparation time(min) | 5 | 30 or more | 5 |
| Roughness | fixed | controllable | controllable |
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