CN214266843U

CN214266843U - Sandwich PCD composite sheet

Info

Publication number: CN214266843U
Application number: CN202023013743.2U
Authority: CN
Inventors: 张钲; 花波波; 陈强
Original assignee: Henan Yalong Diamond Tools Co ltd; Zhengzhou Haocheng Superhard Tool Co ltd
Current assignee: Henan Yalong Diamond Tools Co ltd; Zhengzhou Haocheng Superhard Tool Co ltd
Priority date: 2020-12-15
Filing date: 2020-12-15
Publication date: 2021-09-24
Anticipated expiration: 2030-12-15

Abstract

The utility model discloses an intermediate layer PCD compact, the compact piece is cylindric, and the both ends of cylindric compact piece are carbide layer, for the PCD polycrystal layer that forms with the carbide layer suppression between the carbide layer, and the faying face between carbide layer and the PCD polycrystal layer is curved surface or wave face. The bonding surface between the hard alloy layer and the PCD polycrystalline layer is a curved surface or a wavy surface, and the bonding surface of the non-planar structure is more tightly bonded, so that the manufactured cutter has better property stability. The hard alloy layers on the two sides can better improve the shock resistance of the cutter in the using process and prolong the service life of the cutter. The curved surface interlayer composite sheet is made into a drilling cutter, and the middle stressed part can have better property stability; the compound piece in wave intermediate layer makes milling cutter, can increase the blade, improves the sharpness.

Description

Sandwich PCD composite sheet

Technical Field

The utility model belongs to the superhard materials field mainly relates to an intermediate layer PDC composite sheet.

Background

With the PCD compact consisting of polycrystalline diamond and hard alloy, the PCD compact is widely used in a plurality of fields due to the characteristics of good wear resistance, thermal conductivity, impact resistance and the like. In addition to the fields of traditional coal fields, oil and gas exploitation and geological exploration, the application of the wear-resistant part in the fields of wear-resistant parts, non-ferrous metal processing and the like is gradually increased in recent years. The composite sheet is processed into various cutter processing metal materials such as a milling cutter, a turning tool, a drill bit and the like by utilizing the characteristics of the diamond layer, so that the service life of the cutter can be prolonged, the processing precision can be improved, and the workpiece burn can be reduced.

However, the hardness of the diamond material is too high, so that the processing difficulty of the composite sheet is high, particularly, in the process of grinding the cutting edge of a cutter, an independent diamond polycrystalline layer is difficult to grind in the processing process and is easy to have the phenomenon of cracking, the processing yield is low, the use of the composite sheet in the field of cutters is influenced, and in the use process of the composite sheet as the cutter, the stress is relatively concentrated, the impact resistance performance is often poor, and the cracking phenomenon is easy to occur in the use process.

SUMMERY OF THE UTILITY MODEL

Not enough to exist among the prior art, the utility model aims to provide an intermediate layer PDC composite sheet to solve traditional PDC and bore the drill bit that the tooth leads to because of the blade dulling and creep into defects such as inefficiency, life weak point.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides an intermediate layer PCD compact, the compact is cylindric, and the both ends of cylindric compact are the carbide layer, is the PCD polycrystal layer that forms with the carbide layer suppression between the carbide layer, and the faying face between carbide layer and the PCD polycrystal layer is curved surface or wave face.

The total height of the composite sheet is 0.5-6.0 mm, the diameter of the composite sheet is 6-25.4 mm, and the thickness of the middle PCD polycrystalline layer is 0.1-1.5 mm.

The thickness deviation of the two hard alloy layers is 0-3.0 mm.

The curvature of the joint surface of the PCD polycrystalline layer and the hard alloy layer is 0-50.

The curvature of the joint surface of the PCD polycrystalline layer and the hard alloy layer is 0-0.1, 0.1-1, 1-10 and 10-50.

The utility model discloses a compound piece of intermediate layer PDC, because the stereoplasm alloy layer toughness of both sides is better, can provide better anti the protection that collapses for the PDC polycrystal layer in the middle of to make the degree of difficulty greatly reduced of PDC polycrystal layer when the grinding blade, change and process into required cutter. The bonding surface between the hard alloy layer and the PCD polycrystalline layer is a curved surface or a wavy surface, and the bonding surface of the non-planar structure is more tightly bonded, so that the manufactured cutter has better property stability. The hard alloy layers on the two sides can better improve the shock resistance of the cutter in the using process and prolong the service life of the cutter. The curved surface interlayer composite sheet is made into a drilling cutter, and the middle stressed part can have better property stability; the compound piece in wave intermediate layer makes milling cutter, can increase the blade, improves the sharpness.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of another structure of the present invention.

Fig. 3 is another schematic structural diagram of the present invention.

Fig. 4 is a schematic structural diagram of another embodiment of the present invention.

In the figure: 1-PCD polycrystalline layer and 2-hard alloy layer.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

The utility model provides an intermediate layer PCD compact, the compact is cylindric, and the both ends of cylindric compact are the carbide layer, is the PCD polycrystal layer that forms with the carbide layer suppression between the carbide layer, and the faying face between carbide layer and the PCD polycrystal layer is curved surface or wave face. The total height of the composite sheet is 0.5-6.0 mm, the diameter of the composite sheet is 6-25.4 mm, and the thickness of the middle PCD polycrystalline layer is 0.1-1.5 mm; the thickness deviation of the two hard alloy layers is 0-3.0 mm, the curvature of the bonding surface is 0-50, and the curvature of the bonding surface of the PCD polycrystalline layer and the hard alloy layer is 0-0.1, 0.1-1, 1-10 and 10-50.

As shown in fig. 1, a sandwich PCD compact is provided, in which hard alloy layers 2 are disposed at two cylindrical ends, a PCD polycrystalline layer 1 combined with the two hard alloy layers through high temperature and high pressure is disposed between the two hard alloy layers, a joint surface between the hard alloy layers and the PCD polycrystalline layer is a curved surface, the total height of the sandwich PCD compact is 4.5mm, the diameter of the sandwich PCD compact is 15.88mm, the thickness of the middle PCD polycrystalline layer is 0.7-1.3 mm, wherein the thickest part is 1.3mm, the thinnest part is 0.7mm, the average thickness deviation between the two hard alloy layers is 1.5mm, and the curvature of the joint surface is 0.01. The drill bit made of the interlayer PCD composite sheet has the advantages that the anti-tipping capability is enhanced, the polycrystalline layer is thicker at the central position, the better wear-resisting effect can be achieved, the central stressed position of a drilling tool has better shape stability, and the service life is prolonged.

The bonding surface between the hard alloy layer and the PCD polycrystalline layer is a curved surface, the bonding surface of the non-planar structure is bonded more tightly, and the manufactured cutter has better property stability. The curved surface interlayer composite sheet is made into a drilling cutter, and the middle stressed part can have better property stability.

As shown in fig. 2, the hard alloy layers 2 are arranged at two cylindrical ends of the sandwich PCD compact, the PCD polycrystalline layer 1 combined with the hard alloy layers through high temperature and high pressure is arranged between the hard alloy layers, the combination surface between the hard alloy layers and the PCD polycrystalline layer is a wavy surface, and the rising amplitude and the falling amplitude of the wavy surface are equal, so that the thickness of the middle PCD polycrystalline layer is uniform, the total height of the sandwich PCD compact is 2.5mm, the diameter of the sandwich PCD compact is 10.5mm, the thickness of the middle PCD polycrystalline layer is 0.6mm, the average thicknesses of the two hard alloy layers are not deviated, and the curvature of the wavy surface is 3.5. The bonding surface between the hard alloy layer and the PCD polycrystalline layer is a wavy surface, the rising and falling amplitudes of the wavy surface can be different, and the curvature of the wavy surface is 0.1-1. The milling cutter made of the interlayer PCD composite sheet has the advantages that the anti-tipping capacity is enhanced, the single cutting edge is changed into a plurality of cutting edges, the milling feed is easier, the sharpness is better, the use of other cutting edges is not influenced after the single cutting edge is abraded, and the service life of the cutter is prolonged. The bonding surface between the hard alloy layer and the PCD polycrystalline layer is a curved surface, the bonding surface of the non-planar structure is bonded more tightly, and the manufactured cutter has better property stability. The compound piece in wave intermediate layer makes milling cutter, can increase the blade, improves the sharpness.

As shown in fig. 3, a sandwich PCD compact has two cylindrical hard alloy layers 2 at two ends, a PCD polycrystalline layer 1 bonded with the two hard alloy layers through high temperature and high pressure is arranged between the two hard alloy layers, the curvature of a bonding surface between the hard alloy layers and the PCD polycrystalline layer is 0, that is, the bonding surface is a plane, the total height of the sandwich PCD compact is 3.0mm, the diameter of the sandwich PCD compact is 13.44mm, the thickness of the middle polycrystalline layer is 0.7mm, the thickness deviation of the hard alloy layers at the two ends is 0.7mm, and the thicknesses of the two hard alloy layers are 0.8mm and 1.5mm respectively. The drill bit or the milling cutter made of the composite sheet has the advantages that the cutting edge is not prone to breaking, and meanwhile, due to the fact that the thicknesses of the alloys on the two sides are different, the probability of breaking during processing of the blade edge in the early stage is reduced, the grinding amount is further reduced, the cutting edge can be more easily ground, and the processing difficulty is reduced.

As shown in fig. 4, the hard alloy layers 2 are arranged at two cylindrical ends of the sandwich PCD compact, the PCD polycrystalline layer 1 combined with the hard alloy layers through high temperature and high pressure is arranged between the two hard alloy layers, the curvature of the combined surface between the hard alloy layers and the PCD polycrystalline layer is 15, the total height of the sandwich PCD compact is 8.0mm, the diameter of the sandwich PCD compact is 13.44mm, and the thickness of the middle polycrystalline layer is 0.6-4 mm. Furthermore, the thickness deviation of the corresponding positions of the hard alloy layers at the two ends is 0mm, and the thicknesses of the two alloy layers are both 2-3.7 mm. The drill bit or the milling cutter made of the composite sheet can be used for more easily grinding the cutting edge, the processing difficulty is reduced, and the cutting edge is not easy to break.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides an intermediate layer PCD compact, the compact is cylindricly, and the both ends of cylindric compact are the carbide layer, the PCD polycrystalline layer that forms for pressing with the carbide layer between the carbide layer, its characterized in that: the bonding surface between the hard alloy layer and the PCD polycrystalline layer is a curved surface or a wavy surface.

2. A sandwich PCD compact according to claim 1, wherein: the total height of the composite sheet is 0.5-6.0 mm, the diameter of the composite sheet is 6-25.4 mm, and the thickness of the middle PCD polycrystalline layer is 0.1-1.5 mm.

3. The sandwich PCD compact of claim 1, wherein: the thickness deviation of the two hard alloy layers is 0-3.0 mm.

4. The sandwich PCD compact of claim 1, wherein: the curvature of the joint surface of the PCD polycrystalline layer and the hard alloy layer is 0-50.

5. The sandwich PCD compact of claim 4, wherein: the curvature of the joint surface of the PCD polycrystalline layer and the hard alloy layer is 0-0.1, 0.1-1, 1-10 and 10-50.