CUTTING ELEMENTS AND PROCESS OF OBTAINING A RETRACTOR IN A CUTTING ELEMENT

Abstract

A cutting element is described which promotes the removal of material through friction, such as saw blades, cutting tools applied to milling machines, among others, said cutting element having retractors formed by the deposition of metal and/or carbides on the surface of said cutting element, replacing the conventionally used hard metal insert.

Claims

1-4. (canceled)

5. A cutting element characterized by comprising a body whose surface has areas with increased thickness at specific points with a previously established position, forming scrapers by the deposition of metals, carbides, or a combination of metals and carbides on the surface of said cutting element.

6. The cutting element according to claim 1, wherein the carbides are chosen from Tungsten, Cobalt, Nickel or Chrome.

7. A process of obtaining a retractor in a cutting element characterized in that this is obtained by the deposition of metals and/or carbides on the surface of the cutting element through casting or impact adhesion.

Description

BRIEF DESCRIPTION OF FIGURES

[0015] FIG. 1 shows the top view of a cutting element, in this case a circular saw, provided with indentions to weld the carbide inserts forming the scrapers.

[0016] FIG. 2 shows the top view of a cutting element, in this case a circular saw, in which the scrapers are configured by depositing metal and/or carbide on the surface of the blade.

DETAILED DESCRIPTION OF THE INVENTION

[0017] The cutting element, the object of the present invention, comprises a body (10) which promotes friction on a work surface to remove material.

[0018] This body comprises a saw blade, such as circular saws or a band saw, or cutting tools for this purpose, among others.

[0019] On the surface of the cutting element (10) there are provided areas with increased thickness at specific points with a predetermined position, forming scrapers (11) in order to keep the cutting element body away from the material to be sectioned, avoiding overheating caused by attrition during the material removal operation. Thus, the step of opening windows or indentions (101) through the surface of the cutting element, as shown in FIG. 1, is eliminated.

[0020] The increase in thickness on the surface of the cutting element (10) is obtained by the deposition of metals, carbides or a combination of metals and carbides on the surface of said cutting element (10).

[0021] The carbides comprise Tungsten, Cobalt, Nickel or Chrome.

[0022] The deposition of metals and/or carbides on the surface of the cutting element is achieved by casting or impact adhesion and may be carried out by means of thermal spraying, laser, combustion metalizing, induction heating or flame, or high-speed deposition [such as HVOF (High Velocity Oxygen Fuel).

[0023] Optionally, the retractors (11) can be formed on the surface of the cutting element by injecting a polymeric material into small openings provided in the cutting element, forming a bed for the deposition of the metal and/or carbide.