Our engineers have encountered some problems in practical operation, such as peeling of cladding layer, crack, porosity or blockage. So what are the reasons for these phenomena? How can we solve it?
What are the causes and solutions of cladding peeling? Reasons for peeling of cladding layer 1. Insufficient surface preparation (surface oxidation or contamination) 2. Too low preheating temperature 3. Incorrect parameters / too low welding current, resulting in poor bonding. The solution is 1. Thoroughly clean the surface and carry out good sand blasting treatment. 2. Increase the preheating temperature. 3. Increase the current.
Causes and solutions of cracks? The reason for the crack is 1. The dilution is too high due to excessive overheating / welding current 2. Cooling is too fast 3. Critical substrate. The solution is to reduce the welding current; Reduce the cooling rate, slow cooling / controlled cooling; Use a buffer layer.
Causes and solutions of porosity? The reasons for porosity are 1. Insufficient surface preparation 2. Incorrect parameters (welding current, uphill welding and downhill welding) 3. Humidity due to poor sealing and other reasons. The solution is to thoroughly clean the surface and carry out good sand blasting; Adjust parameters; Replace seals; Flush the equipment with argon.
Causes and solutions of blockage? 1. The particle size is inappropriate. 2. There are non spherical particles in the used powder. The solution is to reduce the content of fine powder; Replace the powder.
For more information about the 3D printing powder, spraying coat powder, or WC based powder, you may search online wococarbide. Wococarbide Provide various products and technical questions and answers.
热门资讯
