Method for depositing paint-coat of metal surface, especially for gradient paint-coat
A metal surface and cladding technology, applied in the direction of metal material coating process, coating, etc., can solve the problem that the plasma cladding process has not been reported yet, and achieves small deformation of the substrate, high powder utilization rate, and low equipment cost. Effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0021] Weigh 70g of FeCrSiB powder with a particle size of 140-320 mesh, 30g of TiC powder with a particle size of 4μm, mix evenly with cellulose acetate acetone solution, apply the prepared coating on the Q235 substrate with a thickness of 3mm, and bake at 200°C Dry. Use arc plasma to scan the metal surface continuously at room temperature. The single-track scan width is 10mm, the working current is 180A, the working voltage is 25 volts, Ar is used as the protective and ionized gas, and the protective gas flow rate is 8m. 3 / h, ionized gas flow rate is 0.8m 3 / h, the distance between the nozzle and the workpiece is 8mm, and the scanning speed is 250mm / min. The sample is taken perpendicular to the scanning direction as a metallographic sample, and the 0.5mm thin slice is cut along the direction parallel to the metal surface, and the transmission electron microscope sample is prepared by mechanical thinning and ion thinning. The test results are as follows: the thickness of t...
example 2
[0023] Weigh 50g of FeCrSiB powder and 50g of WC powder, mix them evenly, make a paste with polyacrylic resin, and evenly coat it on the surface of Q235 steel, and then use a plasma scanning device to scan the sprayed layer to obtain a cladding layer that is metallurgically bonded to the substrate . The single-channel scanning width is 8mm, the working current is 200A, the working current is 35 volts, argon is used as the ionization and shielding gas, and the shielding gas flow rate is 10m 3 / h, ionized gas flow rate is 1m 3 / h, the distance between the nozzle and the workpiece is 10mm, and the scanning speed is 300mm / min. Cut samples along the direction perpendicular to the scanning direction for hardness, metallographic and electronic probe tests. The test results are as follows: the thickness of the cladding layer is 2.5mm, the cladding layer is composed of fine dendrites, cell dendrites and WC ceramic particles, and the microhardness can reach 0.05HV1300.
example 3
[0025] Weigh 50g of NiCrSiB powder and 50g of TiC powder, and spray it on the surface of 45 steel by arc spraying method to form a pre-coated coating with a thickness of 3mm. Scan the metal surface coated with the coating with argon plasma flow. The process parameters used are: the length of the plasma torch nozzle The size in the radial direction is 5mm, the length in the short diameter direction is 3mm, the distance between the plasma torch and the workpiece is 7mm, a transfer arc is formed between the plasma torch and the steel plate, the working current is 220A, the working voltage is 28 volts, Ar is used as the ionization and protective gas, and the protective gas flow rate 9m 3 / h, ionized gas flow rate 1.0m 3 / h, the scanning speed is 200mm / min. On the above-mentioned treated Q235 steel plate, the sample is taken along the direction perpendicular to the scanning direction to make a metallographic sample for metallographic structure observation, image analyzer quantitat...
PUM
| Property | Measurement | Unit |
|---|---|---|
| thickness | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More