PVD (Physical Vapor Deposition) technology has been applied to improve mechanical properties of hard films in the late 1970s。 The prepared films have the advantages of high hardness, low friction coefficient, good wear resistance and chemical stability。 At first, the successful application of high-speed steel tools has attracted great attention of tool manufacturing industry all over the world。 While developing high-performance and high-reliability coating equipment, more in-depth coating application research has been carried out in cemented carbide and ceramic tools。 PVD process has no adverse impact on the environment, which is in line with the development direction of modern green manufacturing。
The treatment temperature of titanium plating process can be controlled below 150-500 C. Therefore, titanium plating process can be applied to coatings of various materials. It has not only colorful decorative effect, but also excellent physical and chemical properties, such as hardness, friction coefficient and other physical properties of the substrate surface can be greatly strengthened by using PVD technology. Indicators.
Characteristics and applications of ion vacuum coating technology:
The application of vacuum ion plating titanium is PVD technology.
Metals react with various gases (argon, nitrogen, oxygen, acetylene, etc。) to form plasma in a specific environment (pressure, temperature, electromagnetic field, etc。)。 After acceleration, plasma rushes to the surface of the plated workpiece to form a solid film。 The titanium coating is fine and uniform, with strong adhesion, high hardness, anti-corrosion and wear resistance。 It has good conductivity and self-lubricating properties。 At the same time, it has rich and diverse colors。 Therefore, vacuum titanium plating is not only a powerful means to improve the performance of materials, but also the best choice to upgrade the grade and increase the added value in decoration。
According to the research on metal cutting principle of tool manufacturer, tool wear mainly includes the following kinds: flank wear; rake wear, i.e. crescent depression wear; front and rear flank wear at the same time.
Comparison of Tool Coating before and after Coating
According to the research of metal cutting principle in tool manufacturing enterprises, tool wear in normal cutting mainly includes the following kinds: flank wear; rake face wear, that is, crescent pit wear; front and rear face wear at the same time。
Tool coating technology refers to coating a thin layer of refractory metals or non-metallic compounds with good wear resistance on the surface of cemented carbide or high speed steel (HSS) with good strength and toughness by vapor deposition. Tool coating acts as a chemical and thermal barrier, which reduces friction, diffusion and chemistry between tool and workpiece. The reaction reduces the wear of crescent depression. Tool coating has the characteristics of high surface hardness, stable chemical performance, heat resistance, oxidation resistance, good wear resistance, small friction coefficient and low thermal conductivity. Cutting condition of coated and uncoated cutting tools made by Kunshan Tianen Titanium Plating Plant, as well as uncoated cutting tools, there are serious debris tumors due to large friction coefficient. The coated cutting tools have small friction coefficient and no obvious debris tumors.