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Stainless steel powder for supersonic cold spraying
Cold Spray Principle: Compressed air accelerates metal particles to critical velocity (supersonic speed). The metal particles directly impact the substrate surface, causing physical deformation. The metal particles flatten on the substrate surface and adhere firmly. Throughout this process, the metal particles are not melted; however, if the metal particles do not reach supersonic speed, they will not adhere.
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Product Model: 316L, 304L, 430L, 420, 440C
Stainless steel powder for supersonic cold spraying
Cold Spray Principle: Compressed air accelerates metal particles to a critical velocity (supersonic speed). After the metal particles directly hit the substrate surface, they undergo physical deformation. The metal particles flatten on the substrate surface and adhere firmly. During the whole process, the metal particles are not melted, but if the metal particles do not reach supersonic speed, they cannot adhere.
Advantages of cold spray over traditional thermal spray:
1. First, the surface temperature of the substrate sprayed should not exceed 150 degrees instantaneously;
2. The perceived temperature is 70 degrees;
3. Good spraying density;
4. Coatings of any thickness can be sprayed.
5. It can be sprayed on any metal, glass, ceramic and rock surface.
Cold spray is increasingly used in the repair and manufacturing industries, with optimistic prospects. Tianwei uses water atomization powder-making technology to significantly reduce the cost of powder, and adjusts the process to ensure that the oxygen content and fluidity meet the usage conditions, with a deposition efficiency of over 80%.
Recommended materials: 316L, 304L, 430L, 420, 440C
Recommended particle size: 40-15um
Product parameters
Product features
1. Low oxygen content;
2. Good mechanical properties;
3. Smooth surface, near-spherical appearance;
4. Reasonable particle size distribution results in better powder flowability.
Chemical composition
| C | O | Yes | Mn | You | Cr | Mo | Fe | |
| 316L | ≤0.03 | ≤0.2 | ≤1.00 | ≤0.3 | 12.0-15.0 | 16.0-18.0 | 2.0-3.0 | Bal. |
| 304L | ≤0.03 | ≤0.2 | ≤1.00 | ≤0.3 | 9.0-13.0 | 18.0-20.0 | - | Bal. |
| 430L | ≤0.03 | ≤0.2 | ≤1.00 | ≤0.3 | -- | 16.0-18.0 | - | Bal. |
| 420 | 0.3-0.4 | ≤0.2 | ≤1.00 | ≤0.3 | -- | 12.0-14.0 | - | Bal. |
| 440C | 1-1.2 | ≤0.2 | ≤1.00 | ≤0.3 | -- | 16.0-18.0 | - | Bal. |
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