Hard alloy, due to its high hardness, high bending strength, strong wear resistance, and corrosion resistance and other series of superior properties, is called "the teeth of industry", and is thus widely applied in industries with high challenges such as oil and gas exploration, coal drilling and mining, construction machinery, fluid control, and ship equipment. In these harsh environments, hard alloy components inevitably encounter problems such as wear and erosion, which requires material engineers to find ways to apply a protective layer to hard alloy parts to extend their service life. Hard alloy coatings are one of the most effective methods for protecting workpieces and prolonging their lifespan. Today, the editor of Xidi will talk about the functions of hard alloy coatings and why hard alloy coatings are needed.

When hard alloy (including a series of hard alloy products, such as hard alloy materials, hard alloy blades, hard alloy tools, hard alloy wear-resistant components, hard alloy molds, etc.) is used, the complex stress on the surface and the thermal wear during high-speed operation will cause severe wear of hard alloy materials (especially hard alloy blades), resulting in the dulling of the blade edge and a significant reduction in the lifespan of hard alloy materials, thereby greatly reducing production efficiency. In some special industries, some hard alloy products often have high hardness but fail to meet the required toughness. When the toughness meets the requirements but the hardness does not meet the usage requirements, the wear resistance and service life of hard alloy materials are often unsatisfactory. So how can hard alloy truly have high toughness while also having high hardness?
To achieve this dual effect, people have tried every possible means to improve the service life of hard alloy products. Many material engineers' unremitting efforts and multiple explorations have continuously been practiced and tested. After nearly half a century of repeated experiments and practice, they have continuously summarized and improved the process, finally finding a method to make hard alloy have both high hardness and high toughness, thereby significantly increasing its service life. That is to apply coating treatment to the surface of hard alloy. Coating the surface of hard alloy with special materials with higher hardness and bending strength than hard alloy - rare precious metals such as TiN, TiC, Ti(C,N), TiBN, TiB2, Al2O3, Ti(C,N) (CVD), TiN (PVD), etc. - to improve the hardness and bending strength of the hard alloy surface. Since the coating materials have higher hardness and wear resistance than hard alloy, it can significantly increase the wear life of the hard alloy after coating treatment.

Hard alloy coatings are actually a modification of the surface of hard alloy. The physical modification of hard alloy mainly involves coating the surface of the hard alloy base material to form a single layer or multiple layers of structure, thereby endowing the hard alloy material with new properties.
The benefits of hard alloy surface coating treatment are that the surface of hard alloy has higher hardness, especially after multi-layer coating or multi-layer composite coating modification of hard alloy, the wear resistance and service life of hard alloy are significantly improved, while not losing its core toughness, significantly improving the performance of hard alloy.
The coating treatment of hard alloy has another advantage that it can be modified selectively and specifically for different uses to achieve the desired optimal performance effect. For example, after coating modification of hard alloy blades, their wear resistance and heat resistance can be significantly improved, thereby achieving the purpose of extending their service life. Xidi Technology Co., Ltd. has been professionally producing a series of hard alloy products for 14 years. It has mastered advanced technologies and has complete equipment in hard alloy surface modification, and can meet the surface treatment requirements of a wide range of customers.