Wococarbide provides powders of various hardness. When customers buy powder according to their own needs, they still feed back that the hardness is insufficient. So, we need to understand how customers test. For example: the customer uses a hammer to hit the coating, and then the coating will sag. The customer said, "is the hardness of your coating bad. I can't deform with hardened steel. The coating is knocked into the groove, which means it's not hard enough. "
An important feature of thermal spraying is that they are very brittle. When we communicate with customers, we will remind customers that "the coating is not impact resistant". The coating is more suitable for friction and wear resistance, but it is accompanied by impact and corrosion when friction and wear occur. Therefore, we need to carefully consider whether to use the spraying process. Because impact will damage the coating, however, corrosion will erode the whole coating and the substrate of the product from the damaged position. Hammering and deforming the coating cannot prove any problem.
Here I give a very simple example: we can break one chopstick by hand, but due to different strength, we can't break 10 chopsticks at the same time. Most of the coatings we spray are only about 0.2mm. What if the spraying thickness is 10mm? The author once sprayed the thickest coating to 32mm, which is very hard, but even with such a thick coating, its brittleness has not changed, and it will still break when subjected to strong impact.
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.
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