Hard alloy beads, wire saw

Abstract

To provide a hard alloy bead capable of quickly performing cutting and positioning at the start of cutting and ensuring stable cutting thereafter. [Solution] The hard alloy beads comprise a bead base 1 and hard alloy particles 2, the bead base being a prismatic body, the hard alloy particles being arranged on the side surfaces of the prismatic body, the base surface of the prismatic body being polygonal, the sides of the polygon having long sides and short sides, and the long sides and short sides being arranged alternately on the base surface.

Description

[Technical field]

[0001] The present invention relates to the technical field of beads, and more particularly to hard alloy beads and wire saws. [Background technology]

[0002] Beads for cutting objects such as sunken ships on the seabed are made by embedding hard alloys into the surface of a cylindrical steel base as the basic unit of the blade, and a large cutting wire saw is formed by connecting multiple basic units in series to a cable. In the conventional structure, a hole is first drilled in the center of a cylindrical steel material so that it is connected in series to the cable, and then hard alloys are welded to the surface of the steel base to form cutting blades, so that the cutting blades are evenly distributed in each direction.

[0003] In actual use, when cutting large materials underwater, it is difficult to initially machine a positioning groove with sufficient cutting force using cylindrical beads. In addition, when a completely cylindrical blade advances, the resistance is relatively large.

[0004] In view of this, the present invention is provided. Summary of the Invention [Problem to be solved by the invention]

[0005] The present invention aims to provide a hard alloy bead and wire saw that can solve the technical problems existing in conventional bead and wire saws, such as difficult cutting and high resistance that impairs the cutting effect, and ensure smooth cutting. [Means for solving the problem]

[0006] In order to achieve the above objectives of the present invention, the following technical solutions are particularly adopted:

[0007] In one aspect of the present invention, there is provided a hard alloy bead, comprising a bead substrate and hard alloy particles, the bead substrate being a prism, the hard alloy particles being disposed on the side of the prism, the base of the prism being a polygon, the sides of the polygon having long sides and short sides, the long sides and short sides being arranged alternately on the base.

[0008] The above-mentioned hard alloy beads can perform quick cutting and positioning at the start of cutting, and can ensure stable cutting afterwards.

[0009] Preferably, the prismatic body is a right-angled prism.

[0010] Preferably, the prismatic body is an even-numbered prismatic body having a polygonal base with more than six sides.

[0011] Preferably, the ratio of the lengths of the short sides to the long sides is 1:(2 to 4).

[0012] Preferably, the prismatic body includes one circular through hole penetrating the two bottom surfaces, and several grooves are provided on the side wall of the through hole, and the grooves extend along the axial direction of the prismatic body.

[0013] Preferably, the opening of the groove is rounded to prevent friction.

[0014] Preferably, the opening width of the recessed groove is 1 / 10 to 1 / 6 of the diameter of the through hole.

[0015] Preferably, the depth of the groove is 1 / 10 to 1 / 6 of the thickness of the thinnest portion of the bead substrate.

[0016] Preferably, the grooves are equally spaced along the circumference of the through hole of the prismatic body.

[0017] Preferably, the hard alloy particles are irregularly shaped with sharp edges.

[0018] Preferably, the hard alloy particles are arranged on the side surface of the bead substrate along the axial direction of the bead substrate.

[0019] Preferably, the hard alloy particles have an average particle size of 6 to 8 mm.

[0020] In another aspect of the present invention, there is further provided a wire saw, the wire saw comprising the above-mentioned hard alloy beads.

[0021] The above wire saw can cut quickly into large materials underwater due to the fast cutting and positioning at the start of cutting, and can ensure stable cutting afterwards. Effect of the Invention

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] (1) In order to realize the rapid cutting and positioning at the beginning of cutting, the hard alloy beads of the present invention have a bead base in the shape of a rectangular column with alternating short and long sides, and the short side is the key to rapid cutting, and the short side is in contact with the surface to be cut at the beginning of cutting, thus providing a relatively small contact area, and the smaller the contact area, the larger the pressure per unit area, so that the beads can cut into the object to be cut quickly and ensure stable cutting afterwards. The grooves on the base play the role of accommodating debris during the cutting process, improve the water permeability of the beads in water, contribute to smooth cutting, reduce the resistance, reduce the contact area between the base and the cable, reduce friction, and extend the service life of the cable.

[0024] (2) The wire saw of the present invention includes the above-mentioned hard alloy beads, and can quickly cut into large materials underwater due to the rapid cutting and positioning at the start of cutting, and can ensure stable cutting afterwards. [Brief description of the drawings]

[0025] In order to more clearly describe the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the specific embodiments or the prior art are briefly described below. The drawings described are only to illustrate some embodiments of the present invention. Those skilled in the art can obtain other drawings based on these drawings without using their inventive ability. All the irregular shaped hard alloy particles shown in the drawings of the present invention are represented by cylindrical convex structures. [Figure 1] FIG. 2 is a schematic diagram of a hard alloy bead according to the first embodiment of the present invention; [Diagram 2] FIG. 2 is a schematic diagram of a hard alloy bead according to a second embodiment of the present invention; [Diagram 3] FIG. 4 is a schematic diagram of a hard alloy bead according to a third embodiment of the present invention; [Figure 4] FIG. 4 is a schematic diagram of a hard alloy bead according to a fourth embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0026] The technical solution of the present invention will be described below clearly and completely with the aid of drawings and specific embodiments. As those skilled in the art will understand, the described examples are only some of the examples of the present invention, not all of the examples, and are only for illustrating the present invention, and do not limit the scope of the present invention. Based on the examples in the present invention, all other examples obtained by those skilled in the art without using their inventive abilities also belong to the scope of protection of the present invention. In the examples, for which specific conditions are not specified, they can be carried out under conventional conditions or conditions recommended by the manufacturer. For reagents or instruments for which the manufacturer is not specified, conventional products available on the market can be used.

[0027] In the description of the present invention, the directions or positional relationships expressed by terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", and "outside" are based on the drawings and are merely for the purpose of explaining the present invention simply and simply, and are not intended to limit the present invention, since the relevant devices or parts do not necessarily have a specific direction or are constructed or operated in a specific direction. In addition, the terms "first", "second", and "third" are merely for the purpose of explanation, and do not express or imply relative importance.

[0028] In the description of the present invention, unless otherwise specified, the terms "attached", "coupled" and "connected" should be understood in a broad sense. For example, they may be fixedly connected, detachably connected, or integrally connected. They may be mechanically connected or electrically connected. They may be directly connected, indirectly connected via an intermediate object, or the insides of two elements may communicate with each other. Those skilled in the art can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0029] In one aspect of the present invention, there is provided a hard alloy bead, which comprises a bead substrate 1 and hard alloy particles 2.

[0030] The bead substrate 1 is a prismatic body, and the hard alloy particles 2 are disposed on the side surfaces of the prismatic body.

[0031] The base of the prismatic body is polygonal, the sides of the polygon have long sides and short sides, the long sides and short sides are arranged alternately on the base, the long sides are the side faces of the right rectangular prism, and the short sides are deformed side edges, which corresponds to forming a relatively sharp cutting blade by using hard alloy particles in place of the side edges.

[0032] Regarding the long and short sides of the present invention, the length of the long side is longer than the length of the short side.

[0033] In order to realize rapid cutting and positioning at the start of cutting, the bead base 1 is formed as a hexagonal prism with alternating short and long sides, the short sides being the key to rapid cutting, and the short sides are brought into contact with the surface to be cut at the start of cutting, thus providing a relatively small contact area, and by reducing the contact area, the pressure per unit area can be increased, which allows the beads to cut quickly into the object to be cut and ensures stable cutting thereafter.

[0034] Preferably, the prismatic body is a right-angled prism.

[0035] Preferably, the prismatic body is an even-numbered prismatic body having a polygonal base with more than six sides.

[0036] As shown in Fig. 1, the cross section of the bead substrate 1 is hexagonal, of which three sides are relatively short, and these three sides can be understood as being formed by cutting off the sharp corners of a triangular prism, in order to provide a mounting platform for the hard alloy. During processing, the sharp corners are cut off first, and the pressure per unit area caused by the sharp corners of the triangle is larger, so that a positioning groove is formed first in the workpiece, and thus the subsequent cutting is performed stably.

[0037] As shown in FIG. 2, the bead substrate 1 has a dodecagonal prism shape.

[0038] A bead base with a triangular structure can improve the stability of cutting, but since it is difficult to bring the sharp corners of the beads into direct contact with the workpiece when cutting begins, positioning is more difficult than with conventional cylindrical beads.Therefore, a better improvement method is to increase the number of corners based on the idea of ​​positioning through corner processing, which not only enables positioning and rapid processing, but also makes it easier to make the incisions when cutting begins.

[0039] The cutting effect is related to the number of side edges. If there are too few side edges, it is difficult to accurately aim and cut, and if there are too many side edges, it is no different from the cylindrical processing method. Therefore, around six side edges is optimal, and the two advantages can be maximized.

[0040] Preferably, the ratio of the lengths of the short sides to the long sides is 1:(2 to 4).

[0041] Preferably, the prismatic body includes a circular through hole penetrating the two bottom surfaces, and the side wall of the through hole is provided with several grooves, which extend along the axial direction of the prismatic body. The number of grooves can be changed within a certain range as long as it meets the requirements of mechanical performance and does not impair the strength of the base.

[0042] Preferably, the opening of the groove is rounded to prevent friction, thereby preventing the side edges of the opening from abrading the cable and extending the service life of the cable.

[0043] Preferably, the opening width of the groove is 1 / 10 to 1 / 6 of the diameter of the through hole, specifically, the opening width in this application is 3 to 5 mm. If the opening width is too large, it will damage the strength of the base body and the cable will easily get stuck in the groove, affecting the rotation of the beads by the cable, and if the opening is too small, it will impair the debris storage and water permeability functions.

[0044] Preferably, the depth of the groove is 1 / 10 to 1 / 6 of the thickness of the bead substrate (thickness at the thinnest point), and specifically, the depth in this application is 2 to 3.5 mm. If the depth is too deep, the strength of the substrate is impaired and processing becomes more difficult, while if the depth is too small, the debris storage and water permeability functions are impaired.

[0045] The provided groove allows debris generated by friction of the wire rope to be discharged in a timely manner, avoiding the wire rope and beads from being unable to move due to the accumulation of debris, prolonging the service life of the wire saw equipped with beaded alloy beads, and improving the efficiency of cutting the hull.

[0046] In the seabed environment, the presence of the grooves allows seawater to flow, which absorbs heat caused by friction of the wire rope in a timely manner, and the mechanical performance of the wire rope in its original environment does not change, so that the effect of cutting sunken ships can be continuously and efficiently maintained. The provision of grooves reduces the contact area between the wire rope and the base, which contributes to reducing wear of the wire rope.

[0047] Preferably, the grooves are equally spaced along the circumference of the through hole of the prismatic body.

[0048] Preferably, the hard alloy particles 2 are irregularly shaped with sharp edges.

[0049] Preferably, the hard alloy particles 2 are evenly arranged on the side surface of the bead substrate 1 along the axial direction of the bead substrate 1 .

[0050] Preferably, the hard alloy particles 2 have an average particle size of 6 to 8 mm.

[0051] In another aspect of the present invention, there is further provided a wire saw, the wire saw comprising the above-mentioned hard alloy beads.

[0052] The above wire saw can cut quickly into large materials underwater due to the fast cutting and positioning at the start of cutting, and can ensure stable cutting afterwards.

[0053] Example 1 As shown in FIG. 1, the hard alloy beads according to this embodiment include a bead substrate 1 and hard alloy particles 2 .

[0054] The bead substrate 1 is a regular hexagonal prism, and the hard alloy particles 2 are placed on the side surfaces of the prism.

[0055] The base of the prism is hexagonal, and the sides of the hexagon have long sides and short sides, and the long sides and short sides are arranged alternately on the base.

[0056] The length ratio of the short side to the long side is 1:2.5.

[0057] The prismatic body includes a circular through hole penetrating the two bottom surfaces, and several grooves are provided on the side wall of the through hole, and the groove extends along the axial direction of the prismatic body. The opening of the groove is rounded to prevent friction. The opening width of the groove is 5 mm. The depth of the groove is 3.5 mm. The grooves are distributed at equal intervals along the circumference of the through hole of the prismatic body. There are eight of the grooves.

[0058] The hard alloy particles 2 are irregularly shaped with sharp edges. The hard alloy particles 2 are evenly arranged on the side surface of the bead substrate 1 along the axial direction of the bead substrate 1. The average particle size of the hard alloy particles 2 is 7 mm.

[0059] Example 2 As shown in FIG. 2, the hard alloy beads according to this embodiment include a bead substrate 1 and hard alloy particles 2 .

[0060] The bead substrate 1 is a regular dodecagonal prism, and the hard alloy particles 2 are placed on the side surfaces of the prism.

[0061] The base of the prismatic body is a dodecagon, and the dodecagon has long sides and short sides, and the long sides and short sides are arranged alternately on the base.

[0062] The length ratio of the short side to the long side is 1:3.

[0063] The prismatic body includes a circular through hole penetrating the two bottom surfaces, and several grooves are provided on the side wall of the through hole, and the groove extends along the radial direction of the prismatic body. The opening of the groove is rounded to prevent friction. The opening width of the groove is 3 mm, and the depth of the groove is 2 mm. The grooves are distributed at equal intervals along the circumference of the through hole of the prismatic body. There are eight of the grooves.

[0064] The hard alloy particles 2 are cone-shaped. The hard alloy particles 2 are evenly arranged on the side surface of the bead substrate 1 along the radial direction of the bead substrate 1. The size of the hard alloy particles 2 is 6 mm.

[0065] Example 3 As shown in Fig. 3, the hard alloy bead according to this embodiment differs from that according to Example 1 only in the following points: the ratio of the short side to the long side is 1:4, the size of the hard alloy particle 2 is 8 mm, and there are six grooves in the inner hole.

[0066] Example 4 As shown in Fig. 4, the hard alloy bead of this embodiment differs from that of Example 2 only in the following points: the prism is an octagonal prism, the ratio of the length of the short side to the long side is 1, the opening width of the groove is 4 mm, the depth of the groove is 3 mm, and there are six grooves.

[0067] Example 5 The wire saw according to this embodiment includes the above-mentioned hard alloy beads.

[0068] Although the present invention has been described using specific embodiments, the above embodiments are merely for illustrating the technical solution of the present invention, and are not intended to limit it. As can be understood by those skilled in the art, without departing from the spirit and scope of the present invention, the technical solution described in the above embodiments may be modified, and some or all of the technical features therein may be replaced with equivalents. These modifications or replacements do not cause the essence of the corresponding technical solution to depart from the scope of the technical solution of each embodiment of the present invention. Therefore, the appended claims include all replacements and modifications that fall within the scope of the present invention. [Explanation of symbols]

[0069] 1 Bead substrate 2 Hard alloy particles

Claims

1. The bead substrate and the hard alloy particles are included, The bead substrate is a prism body, and the hard alloy particles are disposed on the side surface of the prism body. The base of the prism is polygonal, the sides of the polygon have long sides and short sides, and the long sides and short sides are arranged alternately on the base.

1. A hard alloy bead comprising:

2. The prismatic body is a right-angled prism.

2. The hard metal bead according to claim 1 .

3. The prismatic body is an even-numbered prismatic body having a polygonal base with more than six sides.

2. The hard metal bead according to claim 1 .

4. The ratio of the length of the short side to the length of the long side is 1:(2 to 4).

2. The hard metal bead according to claim 1 .

5. The prismatic body includes one circular through hole penetrating the two bottom surfaces, and several grooves are provided on a side wall of the through hole, and the grooves extend along an axial direction of the prismatic body; The opening of the groove is rounded to prevent friction, The opening width of the groove is 1 / 10 to 1 / 6 of the diameter of the through hole, The depth of the groove is 1 / 10 to 1 / 6 of the thickness of the thinnest portion of the bead substrate.

2. The hard metal bead according to claim 1 .

6. The grooves are equally spaced along the circumference of the through hole of the prismatic body.

6. Hard alloy bead according to claim 5.

7. The hard alloy particles are irregularly shaped with edges.

2. The hard metal bead according to claim 1 .

8. The hard alloy particles are arranged on the side surface of the bead substrate along the axial direction of the bead substrate.

2. The hard metal bead according to claim 1 .

9. The average particle size of the hard alloy particles is 6 to 8 mm.

2. The hard metal bead according to claim 1 .

10. The hard alloy beads according to any one of claims 1 to 9 are provided. A wire saw comprising:

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