KR20120106179A

KR20120106179A - A blade with long lasting sharp property

Info

Publication number: KR20120106179A
Application number: KR1020110024107A
Authority: KR
Inventors: 유창호
Original assignee: 유창호
Priority date: 2011-03-18
Filing date: 2011-03-18
Publication date: 2012-09-26

Abstract

Thin coating of higher hardness than the metal used as the body of the blade on cutting blades widely used in living and industrial applications by the vapor deposition method (PVD: Physical Vapor Deposition) method of TiN, TiCN, TiSiN, TiAlCN, AlTiN, TiAlN High hardness materials such as AlTiCrN and Tetrabond T: aC are coated on one side with a thickness of about 1 ~ 2㎛, so the wear rate is different. The blade is characterized in that it remains to the outside and keeps sharpness for a long time while using.

Description

A blade with long lasting sharp property

The present invention relates to an improved blade so that the sharpness of a blade portion such as a cutting blade or a scissors blade used for various purposes in life or industry can be sustained for a long time.

In general, the cutting edge of the cutting knife or scissors that are applied in various forms in life or industry are applied in various ways depending on the shape. For example, cutting blades, blades of blenders, household esophagus, scissors, scalpels, thomson cutters, book cutter blades, etc. Through the improvement of the coating method and the improvement of the metal raw materials, it has been improved to maintain the sharpness and long term.

For example, in the case of household blades, improvements have been made to maintain the strength and sharpness of the blades by using carbon steel or ceramic materials in stainless steel. As long as there is a difference in time to keep each sharp. In addition, only the blade portion of the blade is applied separately to increase the strength of the material, which can also maintain the initial sharpness only as long as the use period can maintain the hardness and strength of the changed portion. In addition, there are many cases where the sharpness is increased by using various coatings. For example, the diamond coating of the razor (DLC: Diamond Like Carbon) is used to improve the sharpness for a long time and give many benefits to life. have. The method using the coating has a higher hardness than the material of the coating blade, which is coated most of the coating material is less sharpened as the coating material starts to wear or peel off at the sharp tip of the coated blade. As a result, the blades used physically have a degree of difference, but as they are used, the sharp tip is worn out physically or chemically, and the sharpness is lost.

The present invention is intended to be maintained for a long time even if some of the material applied to the cutting edge of the sharp edge of the blade used for various purposes.

In order for the sharp tip of the blade to be worn by use and maintain some sharpness, the change of wear is similar to the action of sharpening the blade, so that the sharp edge can be maintained for a long time. The blade body is thinly attached or coated so that it can be used as a sharp tip of the blade because it is stronger and harder than the blade, so that it can be used as the sharp tip of the blade. Even if the sharp part of the general material used is worn out, the thinner adhered or coated part with the stronger and higher hardness is less worn out, so the sharp tip remains to maintain sharpness. As a specific example, a titanium-based TiN, TiCN, TiSiN, TiAlCN, AlTiN, TiAlN, AlTiCrN, and Tetrabond T: aC, etc., are formed on a blade body made of stainless steel (PVD: Physical Vapor Deposition). By using a method of coating with a thickness of 1 ~ 2㎛ to make a blade to polish the opposite side of the coating to make a sharpened (코팅) coating surface to produce a blade. In this case, stainless steel with a surface hardness of about 200 hv (Hardness Vickers) and titanium-based TiN, TiCN, TiSiN, TiAlCN, AlTiN, TiAlN, AlTiCrN and tetrabond with surface hardness of 2000-3600 hv (Hardness Vickers) (Tetrabond) Physical Vapor Deposition (PVD) coating, such as T: aC, has a hardness difference of about 10 times or more compared to the coated surface, resulting in abrasion in use and less wear, resulting in a relatively sharp tip. The remaining coating layer remains sharp due to its thin thickness.

As mentioned above, cutting blades that are used in various shapes and forms in life or industry should be regrind when they wear out and used or replaced with new ones. However, it uses the property of abrasion as it is, but by using a coating layer with higher strength or hardness as a sharp tip with different strength and hardness, it can be used for a long period of time as long as it does not inconvenience when it wears out or deforms due to wear. Do it. This is a good invention that is less convenient for the maintenance of the cost savings and sharpness caused by the replacement is more convenient in the use of tools in general life or cutting tools for industrial use.

Figure 1 is an application of the general esophagus consists of a blade body (1) made of stainless steel, a coating surface (2) coated with PVD, and a handle (3) to hold the knife in hand.

After cutting and casting the shape of the blade body such as stainless steel (other metal materials can be used), and using the physical vapor deposition (PVD) method, TiN, TiCN, TiSiN, In order to coat high hardness materials such as TiAlCN, AlTiN, TiAlN, AlTiCrN and Tetrabond T: aC on one side, when the blade is put in a vacuum chamber, the one side is covered or overlapped and coated as shown in FIG. It is to be composed of the blade body (1) and the coating surface (2), but is sharpened as shown in Figure 1 to the sharp tip (연마) of the coating surface. In the case of esophagus depending on the application, the handle 3 of FIG. 1 is attached. In addition to such a manufacturing method, the material coated only on one side may be cut and molded to meet the required use.

Μm: Unit of length, micrometer, one million meters (Meter)

Claims

In cutting blades used for living and industrial purposes, a blade body made of metal and physical vapor deposition (PVD) method are used for TiN, TiCN, TiSiN, TiAlCN, AlTiN, TiAlN, AlTiCrN and tetrabond ( Tetrabond) A coating surface coated with a hard material such as T: aC with a thickness of about 1 to 2 μm on one side, and a thin coating surface due to the difference in wear even when worn due to the use of a sharp tip. Blade work piece characterized in that it remains on the outside and maintains sharpness for a long time.