Hardness
The high surface hardness provided by the aluminum-titanium coated knives from the plating factory is one method to enhance tool life. Generally, the higher the hardness of the material or surface, the longer the lifespan. Aluminum-titanium coated knives with carbon nitride have greater hardness than titanium nitride coatings. Due to the addition of carbon content, the hardness of the coating has increased by 33%, with hardness values ranging approximately from Hv3000 to Hv4000 (depending on the manufacturer). The use of CVD diamond coatings with surface hardness up to Hv9000 is well-established, and their lifespan is 10 to 20 times longer than that of coated cutting tools. The high hardness and cutting speed of diamond coatings, which can improve the capability by 2 to 3 times compared to uncoated tools, make them a good choice for machining non-ferrous materials.

Common coating stacking methods for wear-resistant coatings on molds include physical vapor deposition (PVD) and chemical vapor deposition (CVD). Typically, PVD coatings are about 2 to 6 micrometers thick and, when coated on the tool coating substrate, induce compressive stress; while CVD coatings are also about 2 to 6 micrometers thick and, when coated on the blade substrate, induce tensile stress. The former is more beneficial for enhancing the substrate strength.

Mold wear-resistant coating, combined with an excessive thickness of CVD coating, damages the sharpness of the blade tip, making it unsuitable for blades requiring extremely sharp cutting edges. Consequently, over the past few years, market share has gradually been eroded by PVD coatings, particularly in tool coatings.

Manufacturer of wear-resistant coating for molds introduces how to maintain the glossy coating after application.
The lifespan of a highlight tool coating's application is not only related to the blade material and the blade manufacturer's design of the blade style, but also depends on the operator's attention to unexpected incidents during routine operation. Currently, many operators encounter numerous issues when using carbide blades. In view of this situation, tool coating manufacturers have summarized some issues and maintenance methods during the application process. Today, we share these with you, hoping to help us avoid any losses in the operation process.
The maintenance of blades should be documented. The coating manufacturer advocates for regular repairs and protection of the hard alloy blades. The definition of this regular interval can be based on the blade wear repair cycle, the power of each cut, and the quality issues encountered during cutting. After the operators record these times, they can schedule maintenance and protection of the blade's mechanical performance. The benefits of this technique include constantly monitoring the blade's performance. If a problem arises in the repair cycle, it indicates that the blade's service life is nearing its end. Therefore, it is advisable to replace it at the first sign of trouble to prevent greater losses to the user's interests.
The second advantage is the ability to schedule maintenance, which can prevent unnecessary losses during the operation of the blades, such as high-gloss coatings on the knives. This avoids minor issues from escalating into larger problems, which not only result in significant financial losses but also severely impact the lifespan of both the blades and the machine. Thus, it's clear that neglecting these aspects can have a considerable impact on the user's interests.
Trust us, with the above highlighted knife coating maintenance methods, you should have a good understanding. This method is actually very simple. Just think about it, by simply recording the time, you can avoid so many issues. Not only can it ensure that users' interests are greatly improved, but it also undoubtedly reduces unnecessary losses during the operation after the knife coating, which is also a process of another user interest improvement. So, we hope we can understand this, which indeed offers you considerable assistance. Knife Coating
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