A diamond compact substrate

Abstract

The utility model relates to superhard material technical field, concretely is a kind of diamond compact matrix, adopt cambered surface structure, the design of centre higher than edge, and through the design of multiple small bosses in centre instead of integral cambered surface design, disperse axial impact force when impact, ensure the axial impact resistance of diamond compact, adopt the design of annular projection and radial projection combination, improve the side impact resistance effect of diamond compact, adopt the design of multiple small bosses circumferentially even distribution, increase the contact area of diamond and alloy matrix, further strengthen the binding force of diamond and hard alloy matrix, reduce the risk of diamond from hard alloy matrix drop.

Description

Technical Field

[0001] This utility model relates to the field of superhard materials technology, specifically a diamond composite sheet matrix. Background Technology

[0002] Diamond composite sheets are superhard composite materials (PDC) consisting of a polycrystalline diamond layer (PCD) and a cemented carbide matrix. They combine the ultra-high hardness and wear resistance of diamond with the impact resistance and weldability of cemented carbide, and are primarily used in industries such as petroleum, geological drilling, and resource extraction tools. With the continuous development of various industries in recent years, higher demands have been placed on the performance of composite sheets. New requirements are constantly emerging, such as better impact resistance and greater adaptability to different geological conditions without reducing service life and ensuring cutting efficiency. New tooth profile composite sheets with various non-planar structures have also emerged in recent years, and some products have gained widespread market acceptance.

[0003] Most cemented carbide matrix interface structures are designed for planar composite sheets. In recent years, some curved alloy matrices have also emerged, which have solved the problem of large pressure difference between the center and edge of the cemented carbide matrix to some extent, enhanced the bonding force between diamond and cemented carbide matrix, and improved the axial impact resistance of composite sheets to some extent. However, the overall lateral impact resistance of composite sheets is relatively weak, and the diamond layer is prone to falling off the cemented carbide matrix during the cutting process. Utility Model Content

[0004] The purpose of this invention is to provide a diamond composite substrate to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A diamond composite substrate, comprising: Cylindrical base The central boss A, boss B, radial protrusion, annular protrusion, inclined annular surface, and outer ring frustum are set on the end face of the cylindrical base; The annular protrusion is located on the outer side of the central boss A. Radial protrusions are used to connect the annular protrusions and the inclined ring surface. The outermost frustum is located on the outermost ring of the cylindrical base end face, and the lower end of the inclined annular surface is connected to the outer frustum. The bosses B are evenly distributed among the radial protrusions.

[0006] Preferably, the outer diameter of the annular protrusion is 1 / 4 to 1 / 3 of the diameter of the cylindrical base.

[0007] Preferably, the width of the annular protrusion is 0.5-1mm and the height is 0.3-0.5mm.

[0008] Preferably, the radial protrusion has a width of 0.5-1 mm and a height of 0.3-0.5 mm.

[0009] Preferably, the diameter of the central boss A is 0.5-1 mm and the height is 0.3-0.5 mm.

[0010] Preferably, the bosses B are arranged in a straight line or in a uniform circular pattern, with a diameter of 0.5-1 mm and a height of 0.3-0.5 mm.

[0011] Preferably, the width of the outer truncated cone is 0.5-1mm, and the height difference between the outer truncated cone and the upper end of the inclined ring surface is 1-5mm.

[0012] Preferably, the angle between the inclined torus and the normal vector of the outer frustum is not less than 15°.

[0013] Preferably, the radial protrusions and bosses B are symmetrically distributed circumferentially.

[0014] Compared with the prior art, the beneficial effects of this utility model are: This invention employs an arc-shaped structure with the center higher than the edges, and replaces the overall arc-shaped design with multiple small protrusions in the center. This disperses the axial impact force during impact, ensuring the axial impact resistance of the diamond composite sheet. The combination of annular and radial protrusions improves the lateral impact resistance of the diamond composite sheet. The circumferentially distributed design of multiple small protrusions increases the contact area between the diamond and the alloy matrix, further enhancing the bonding force between the diamond and the cemented carbide matrix and reducing the risk of the diamond detaching from the cemented carbide matrix. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of Embodiment 1 of the present utility model; Figure 2 This is a three-dimensional structural diagram of Embodiment 2 of the present invention.

[0016] In the diagram: 1-Central boss A; 2-Boss B; 3-Radial protrusion; 4-Annular protrusion; 5-Sloping annular surface; 6-Outer ring frustum; 21, 22, 23-Rounded corners. Detailed Implementation

[0017] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0018] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present application.

[0019] This utility model provides a diamond composite sheet matrix, comprising: a cylindrical matrix, The following components are provided on the end face of the cylindrical base: central boss A1, boss B2, radial protrusion 3, annular protrusion 4, inclined annular surface 5, and outer ring frustum 6. The annular protrusion 4 is located on the outer side of the central boss A1. The radial protrusion 3 is used to connect the annular protrusion 4 and the inclined annular surface 5. The outer frustum 6 is located on the outermost ring of the cylindrical base end face, and the lower end of the inclined ring surface 5 is connected to the outer frustum 6. The bosses B2 are evenly distributed among the radial protrusions 3.

[0020] Preferably, the diameter of the annular protrusion 4 is 1 / 4 to 1 / 3 of the diameter of the cylindrical base.

[0021] Preferably, the width of the annular protrusion 4 is 0.5-1mm and the height is 0.3-0.5mm.

[0022] Preferably, the radial protrusion 3 has a width of 0.5-1 mm and a height of 0.3-0.5 mm.

[0023] Preferably, the diameter of the central boss A1 is 0.5-1mm and the height is 0.3-0.5mm.

[0024] Preferably, the boss B2 is arranged in at least 3 rings in a straight line or evenly in a circle, with a diameter of 0.5-1mm and a height of 0.3-0.5mm.

[0025] Preferably, the width of the outer truncated cone 6 is 0.5-1mm, and the height difference between the outer truncated cone 6 and the upper end of the inclined ring surface 5 is 1-5mm.

[0026] Preferably, the angle between the normal vector of the inclined annular surface 5 and the outer frustum 6 is not less than 15°.

[0027] Preferably, the radial protrusions 3 and bosses B2 are symmetrically distributed circumferentially.

[0028] Preferably, the connection between the annular protrusion 4 and the inclined annular surface 5 is achieved by at least four evenly distributed radial protrusions 3.

[0029] At certain sharp corners of the above structure, rounded corners 21, 22, and 23 are provided, with a size ranging from 0.1 to 1, depending on the specific size of the structure.

[0030] Therefore, the diamond composite substrate provided by this utility model increases the contact area with diamond by using a boss instead of a curved surface, thus improving the bonding force between diamond and the alloy substrate. Simultaneously, the design of the inner ring central boss A can also disperse the central axial impact stress. The annular and radial protrusions are designed to better disperse and eliminate circumferential stress during the composite substrate's rotation, further increasing the contact area between diamond and the cemented carbide substrate and improving the bonding force between them. The outer ring frustum further strengthens the bonding force between diamond and the cemented carbide substrate, significantly improving the overall lateral impact resistance of the composite substrate and reducing the risk of diamond detachment.

[0031] Example 1 like Figure 1 As shown, this embodiment provides a diamond composite substrate, comprising: A cylindrical base with a diameter of 17.8 mm and a height of 12 mm (distance from the highest point of the central frustum to the bottom). Nine central bosses A1, boss B2, radial protrusion 3, annular protrusion 4, oblique annular surface 5, and outer ring frustum 6 are set on the end face of the cylindrical base. The diameter of the central boss A1 is 0.5 mm and the height is 0.3 mm. The upper surface of the central boss A1 is an arc surface, and the annular protrusion 4 is set on the outside of the nine central bosses A1. Four radial protrusions 3 are used to connect the annular protrusions 4 and the inclined annular surface 5. The radial protrusions 3 are evenly distributed around the circumference, with an included angle of 90° between each pair. Their width is 0.8 mm and their height is 0.3 mm. The annular protrusion 4 has a width of 1 mm and a height of 0.3 mm; The boss B2 is arranged in three straight, evenly distributed rings, with fewer inner rings than outer rings. The three rings of boss B2 are symmetrically distributed, and are circular in shape with a diameter of 0.5 mm and a height of 0.3 mm. The width of the outer frustum 6 is 0.5 mm, and the height difference between the outer frustum 6 and the upper end of the inclined ring surface 5 is 1 mm. The angle between the normal vector of the inclined ring surface 5 and the outer frustum 6 is 30°.

[0032] Sharp corner rounding 21 is located on the top outer ring of the annular protrusion 4, and sharp corner rounding 21 has an R0.15; sharp corner rounding 22 is located on the top outer ring of the small protrusion 2 between the radial protrusions, and sharp corner rounding 22 has an R0.2; sharp corner rounding 23 is located at the connection between the inclined surface 5 connecting the outer ring frustum and the arc-shaped bottom surface and the outer ring frustum 6, and sharp corner rounding 23 has an R0.5.

[0033] Example 2 like Figure 2 As shown, this embodiment provides a diamond composite substrate, comprising: A cylindrical base with a diameter of 17.8 mm and a height of 12 mm (distance from the highest point of the central frustum to the bottom). Nine central bosses A1, boss B2, radial protrusion 3, annular protrusion 4, oblique annular surface 5, and outer ring frustum 6 are set on the end face of the cylindrical base. The diameter of the central boss A1 is 0.5 mm and the height is 0.3 mm. The upper surface of the central boss A1 is an arc surface, and the annular protrusion 4 is set on the outside of the nine central bosses A1. Six radial protrusions 3 are used to connect the annular protrusions 4 and the inclined annular surface 5. The radial protrusions 3 are evenly distributed around the circumference, with an included angle of 60° between each pair. Their width is 0.8 mm and their height is 0.3 mm. The annular protrusion 4 has a width of 1 mm and a height of 0.3 mm; The boss B2 is arranged in three straight, evenly distributed rings, with fewer inner rings than outer rings. The three rings of boss B2 are symmetrically distributed, and are circular in shape with a diameter of 0.5 mm and a height of 0.3 mm. The width of the outer frustum 6 is 0.5 mm, and the height difference between the outer frustum 6 and the upper end of the inclined ring surface 5 is 1 mm. The angle between the normal vector of the inclined ring surface 5 and the outer frustum 6 is 30°.

[0034] Sharp corner rounding 21 is located on the top outer ring of the annular protrusion 4, and sharp corner rounding 21 has an R0.15; sharp corner rounding 22 is located on the top outer ring of the small protrusion 2 between the radial protrusions, and sharp corner rounding 22 has an R0.2; sharp corner rounding 23 is located at the connection between the inclined surface 5 connecting the outer ring frustum and the arc-shaped bottom surface and the outer ring frustum 6, and sharp corner rounding 23 has an R0.5.

[0035] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary; within the framework of this invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of this invention as described above, which are not provided in the details for the sake of brevity.

[0036] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A polycrystalline diamond compact substrate, characterized in that, include: Cylindrical base The central boss A (1), boss B (2), radial protrusion (3), annular protrusion (4), inclined annular surface (5), and outer ring frustum (6) are set on the end face of the cylindrical base. The annular protrusion (4) is located on the outside of the central boss A (1). The radial protrusion (3) is used to connect the annular protrusion (4) and the inclined annular surface (5). The outer frustum (6) is located on the outermost ring of the end face of the cylindrical base, and the lower end of the inclined annular surface (5) is connected to the outer frustum (6). The bosses B (2) are evenly distributed among the radial protrusions (3).

2. The polycrystalline diamond compact substrate of claim 1, wherein, The outer diameter of the annular protrusion (4) is 1 / 4 to 1 / 3 of the diameter of the cylindrical base.

3. The polycrystalline diamond compact of claim 1, wherein, The width of the annular protrusion (4) is 0.5-1mm and the height is 0.3-0.5mm.

4. The polycrystalline diamond compact of claim 1, wherein, The radial protrusion (3) has a width of 0.5-1 mm and a height of 0.3-0.5 mm.

5. The polycrystalline diamond compact of claim 1, wherein, The diameter of the central boss A (1) is 0.5-1mm and the height is 0.3-0.5mm.

6. The polycrystalline diamond compact of claim 1, wherein, The bosses B (2) are arranged in a straight line or in a circle, with a diameter of 0.5-1 mm and a height of 0.3-0.5 mm.

7. The polycrystalline diamond compact of claim 1, wherein, The width of the outer ring truncated cone (6) is 0.5-1mm, and the height difference between the outer ring truncated cone (6) and the upper end of the inclined ring surface (5) is 1-5mm.

8. The polycrystalline diamond compact of claim 1, wherein, The angle between the normal vector of the inclined torus (5) and the outer frustum (6) is not less than 15°.

9. The polycrystalline diamond compact of claim 1, wherein, The radial protrusions (3) and bosses B (2) are symmetrically distributed along the circumference.

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