WO1995000275A1

WO1995000275A1 - Diamond impregnated cable, method of manufacture and device for carrying out said process

Info

Publication number: WO1995000275A1
Application number: PCT/BE1994/000034
Authority: WO
Inventors: Etienne Coumans; Thierry Gillet; Théodore Holsteyns; Denis Soleil
Original assignee: 'diamant Boart', S.A.
Priority date: 1993-06-22
Filing date: 1994-05-20
Publication date: 1995-01-05
Also published as: BE1007185A3; AU6672694A

Abstract

Diamond impregnated cable essentially including at least one thread forming the core (3) of the cable and diamond-charged particles (1) projecting in relation to said core (3). Said cable comprises at least two continuous threads (4 to 7), with one being part of the above-mentioned core (3). The threads are associated with one another so as to immobilize the diamond-charged particles (1) in relation to said core (3).

Description

"Diamond cable, process for manufacturing this cable and device for implementing this process

The present invention relates to a diamond cable comprising diamond particles and at least two continuous wires (4 to 7) of which at least one is part of the core (3) of the cable, these wires being associated one with the another in such a way as to immobilize the diamond particles with respect to this core.

A diamond cable generally consists of a carrying wire on which are threaded diamond parts. These parts, also called pearls, are distanced from each other by partitions regulating the pitch of the diamond wire.

The carrier wire is chosen according to the envisaged application of the diamond tool. It is defined by its outside diameter and by its mechanical properties, number of wires, type of stranding, quality of the metal, etc. In addition, its surface condition will be defined by the requirements for resistance to oxidizing and corrosive agents in the outside environment and by certain desiderata of properties of interface with materials constituting the separations. The diamond parts are usually cylindrical and have an axial bore allowing them to be threaded onto the carrier wire. These diamond parts are formed of a central non-diamond core, called a "support", and contain on their outer surface a diamond-like concretion projecting from the cable core, so as to allow material to be removed by friction. this diamond concretion on this material.

The concretion is obtained either by sintering a mixture of metallic powders and grains diamonds, either by electrochemical co-deposition of a metallic binder and diamond grains, the whole being attached to the support, either directly during the sintering or deposition process, or by subsequent brazing.

The separations commonly used are either slightly compressed metal springs, or nozzles made of a synthetic material, in particular plastic, which is generally injected into the space separating the diamond parts on the cable. These separations must guarantee that the diamond parts are kept at a constant mutual distance and must at the same time ensure the flexibility of the finished cable carrying these diamond parts. The document DE 2.254.328 relates to another type of cable which, however, does not seem to have found any application until now. The reason could be that it does not make it possible to obtain a sufficiently sharp saw cut and that, moreover, the wires between which the diamond parts are fixed are subjected to very high stresses, so that they wear very quickly.

A diamond wire, obtained by one or other of the methods mentioned above, is closed on itself with the help of an adequate connection. When this endless diamond wire is driven by a rotating pulley, it is able to perform sawing work by removing material.

Thus, essentially two sawing techniques are known, namely: the machine winding and recoiling technique "and" the tensioned wire and machine advancing technique ".

Until now, diamond cables are mainly used for extraction and. Squaring of stone blocks in quarries and in wafer-making workshops, cutting slices and tiles of natural stones, forming openings in reinforced or unreinforced concrete sails, cutting in building materials civil engineering, such as buildings, roads, port facilities, gutters, ceramic elements or refractory bricks, etc. However, about three quarters of the applications relate to the cutting of natural ornamental stones.

The machines used are electric, thermal or hydraulic whose powers vary from a few W to almost 100 kW. The linear speeds obtained by the diamond cable are on average from 10 to 40 m / s. -In addition, the overall diameters of the diamond cables are generally between 7 and 17 mm.

The current diamond cables, used in the applications listed above, show a limit of use linked to the resistance of the assembly to the sliding of the parts on the carrier wire, this as a function of the stresses imparted to the assembly, such as shocks, running speeds, motive power, edge effect, etc. If the frictional forces on the material to be cut greatly exceed the drive force on the driving pulley, the cable may suddenly stop in the line chopped off. In this case, there is an instantaneous blocking of the cable, jamming of an added part and crushing of a set of such parts over a length of up to several meters.

Several techniques are used to increase the adhesion of the diamond parts on the wire -4- carrier, such as crimping or mechanical fixing of all pearls directly on the carrier wire. Such an operation is however long, costly and leads to a reduction in the overall flexibility of the finished diamond cable.

One of the essential aims of the present invention is to remedy the aforementioned drawbacks and to propose a diamond cable of a very simple design while ensuring effective fixing of the diamond parts on the core of the cable.

To this end, the cable according to the invention comprises particles of diamonds held in a metallic binder extending in a substantially uniform manner around the axis of the cable and projecting radially with respect to the core of the latter. .

Advantageously, the diamond particles being provided on a series of supports spaced on the core of the cable, the latter comprises at least three continuous braided, woven, twisted or stranded wires between which said supports are inserted.

The invention also relates to a particular method of manufacturing a diamond cable according to the invention.

This process is characterized, in general, by the fact that it comprises the association side by side of at least two continuous wires and the immobilization of the diamond particles projecting from the core of the cable relative to these sons.

Finally, the invention also relates to an installation for the manufacture of a diamond cable, in particular as described above.

According to the invention, the latter comprises a braiding device cooperating with a supply device for supports provided with particles. diamond-coated and having passageways for the wires to be braided, this supply device comprising means enabling a support to be engaged with the wires downstream of the braiding device so that this support is inserted at regular distances between these braided wires .

Other details and particularities of the invention will emerge from the description given below, by way of nonlimiting examples, of some particular embodiments of a diamond cable according to the invention, as well as a method of manufacture and of an installation for implementing this process, with reference to the accompanying drawings. Figure 1 is a schematic side view of a diamond cable part according to a first embodiment of the diamond cable according to the invention.

Figure 2 is, on a larger scale, a section along line II-II of Figure 1.

Figure 3 is, also on a larger scale, a schematic side view of a detail of a variant of this first embodiment.

Figure 4 is a schematic side view of a diamond cable part according to a second embodiment of the invention.

FIG. 5 is, on a larger scale, a section along the line V-V of FIG. 4.

Figure 6 is a schematic side view of part of a diamond wire according to a third embodiment of the invention.

Figure 7 is a schematic side view of a diamond wire according to a fourth embodiment of the invention. Figure 8 is a variant of this fourth embodiment.

Figure 9 is a schematic side view of a fifth embodiment of the invention. Figure 10 is a side view of a variant of this fifth embodiment.

Figure 11 is a section along line XI-XI of Figure 10.

Figure 12 is a schematic side view of part of a diamond wire according to a sixth embodiment of the invention.

FIG. 13 is a schematic side view of an installation for the manufacture of a diamond wire according to the first embodiments as shown in FIGS. 1 to 3.

FIG. 14 is a schematic side view of an installation for the manufacture of a diamond cable according to the embodiment shown in FIGS. 7 and 8. FIG. 15 is a view along the line XV-XV in FIG. 14.

Figure 16 is a schematic view of an installation for the manufacture of a diamond wire according to the embodiment shown in Figure 12. In the various figures, the same reference numerals relate to identical or similar elements.

In general, the invention relates to a diamond cable essentially comprising at least one wire, forming the core of the cable, and diamond particles projecting relative to this core, this cable being particular in the sense that it comprises at least two continuous wires, at least one of which is part of the aforementioned core, and which are associated with each other in such a way as to immobilize the diamond particles with respect to this core.

Thus, contrary to what is the case for existing diamond cables, the diamond cable according to the invention consists of several wires which, on the one hand, cooperate with each other and, on the other hand, fix the diamond particles or the supports of such particles relative to the core of the cable.

These son can, according to the invention, be associated with each other in different ways according to techniques known per se. These different techniques will be defined below as "interlacing techniques". These techniques therefore also include braiding, weaving, stranding, knitting, stitching, sewing or any other operation that can be applied to laterally secure the son between them. These are preferably techniques which can be applied by industrial devices, such as textile looms, rope braiding machines, cable stranding machines and devices for manufacturing composite materials.

Figures 1 and 2 relate to a first embodiment of a diamond cable according to the invention.

In this embodiment, the diamond particles 1 are provided on a series of supports 2 spaced on the core 3 of the cable. This core 3 comprises, in this concrete case, four pairs of separate continuous wires 4, 5, 6 and 7 which are braided between them and into which are inserted, at constant distances, the supports 2 carrying the diamond particles 1.

The supports 2 are formed by cylindrical elements whose external cylindrical surface carries the diamond particles 1, the latter are fixed to the support 2 by means of a layer of a suitable binder 13. In addition, these supports 2 have separate passageways 8 for each of the pairs of wires 4 to 7 of the core 3 of the cable.

These passageways 8 extend parallel to the axis of the elements 2 and are, in this first embodiment, formed by notches in the cylindrical wall of the elements 2. These notches are all of the same depth and extend to angular distances substantially constant with respect to each other, that is to say, in the present case, at angular distances of 90 °. The wires of the same pair 4 to 7, are superimposed in each notch as can be seen in la.figure 2. Furthermore, instead of eight wires, as in the embodiment shown in Figures 1 and 2, we could for example provide sixteen separate wires depending on the nature of these wires and the desired resistance of the diamond cable. In such a case, four of these wires are superimposed in each of the notches 8 of the support 2.

In this first embodiment, as shown in FIG. 1, the carrying wires 4 to 7 are braided after each support 2, so as to create a mechanical stop and to prevent any relative movement of sliding relative to the core 3 of the cable formed by these carrying wires 4 to 7.

In addition, the portions of braided son 9 between two consecutive supports 2 and the part of the son extending in the notches can be covered and impregnated with a layer of synthetic material 10, such as a resin or an elastomer, n ' not significantly influence the flexibility of the cable. In addition, a spring type separation, not shown in FIG. 1, could be introduced between two consecutive supports.

This separation could also be embedded in the layer of synthetic material 10.

In a variant of this first embodiment of the diamond cable, according to the invention, the support 2 can have, as shown in broken lines in FIG. 2, an axial hole 11 through which a carrying wire could then also extend 12. In this case, the wires 4 to 7 passing through the notches 8 could for example be braided, stranded or knitted around this central support wire 12. Furthermore, instead of providing four of these notches 8 in the support 2, one could for example make use of a support comprising only only three of these notches distant from each other by an angle of 120 °. The wires used can be of a very varied nature and can, for example, be made of a plastic, metallic, ceramic, glass, carbon material, etc. Each wire could, moreover, be made up of several prewashed or prefabricated strands. This will generally be the case if metallic wires are used, which are preferably made up of several strands of pre-prestressed or pre-braided steel.

The supports 2 carrying the diamond particles 1 may, in general, have any shape and have a surface of revolution covered with a binder 13 in which the projecting diamond particles 1 are kept. This is how this surface of revolution can also be spherical. Thus, FIG. 3 shows a variant of a support 2 having a warped geometry, that is to say, the cylindrical part 2 ′ carrying the diamond particles 1 is extended on either side along its axis by a tapered part 2 '' allowing to support the portions of non-braided wires adjacent to the notches 8 of the cylindrical part 2 'of the support 2.

A concrete example of a diamond cable according to this first embodiment comprises as supports 2 sintered pearls having an outer diamond ring 1 in FEPA C50 concentration embedded in a binder 13 of Cobalt-Bronze and with a pitch of 25 mm. Braided wires 4 to 7 are formed from pre-braided strands of polyethylene.

Figures 4 and 5 relate to a second embodiment of the diamond cable according to the invention.

This second embodiment differs from the first embodiment essentially by the fact that the passageways 8 for the carrying wires 4 to 6 are formed by channels or holes which extend parallel to the axis of the elements 2, forming the supports, at substantially constant radial distances from this axis and substantially constant angular distances from each other.

In the embodiment, as shown in Figures 4 and 5, these passageways 8 are three in number, so that the core 3 of the cable also consists of three wires 4, 5 and 6 which extend in each of these passageways 8. Furthermore, instead of being braided or knitted, as in the first embodiment. the three wires 4, 5 and 6 are simply crossed over constant distances between two consecutive elements 2 and are embedded in a layer of synthetic material 10, in such a way as to avoid any relative sliding movement of the elements 2.

Figure 6 relates to a third embodiment of the diamond cable according to the invention. This embodiment is distinguished from the previous one by the fact that the carrying wires 4, 5 and 6 in the zone 9 between, two consecutive supports 2 extend parallel to each other by being embedded in the layer of synthetic material 10. In fact, in this embodiment the carrying wires are associated with each other between two consecutive supports by the layer of synthetic material which also makes it possible to prevent any relative movement of sliding of these supports on the core 3 of the cable.

Figure 7 relates to a fourth embodiment of a diamond cable according to the invention. In this embodiment, the diamond particles 1 are provided on a continuous helical support 2 threaded on the core 3 of the cable and formed of a relatively narrow band on the outside face of which is provided a diamond concretion 1 in a metal substrate. 13. Thus, the attachment of the diamond particles to this metal strip 2 can be obtained by electrolysis during which the diamond particles 1 are codeposited with the substrate 13 on the metal strip 2. The immobilization of this support on the core 3 cable can for example be obtained by mechanical tightening or any other suitable means. It is important to note that, in a rather unforeseen manner, it has been observed that thanks to the fact that the continuous support 2 extends in a helical manner around the core 3 of the cable, the latter retains a very good flexibility despite the rigidity of the material from which the support is made. Thus, for example a cable consisting of a monofilament whose surface would be covered with a diamond concretion is not suitable for endless diamond cable cutting machines because of its high rigidity.

In a variant of this fourth embodiment of the diamond cable, according to the invention, the support 2 may have a circular section instead of being formed by a narrow strip. Furthermore, the turns of the support can be spaced, as shown in Figure 7, or be clamped against each other.

The support can also be constituted by several wires or bands 2a and 2b wound simultaneously helically around the core 3 of the cable. As shown in Figure 8, the support comprises two bands 2a and 2b.

As regards this core 3, it can be constituted by a single wire or a set of interlaced wires or not 4 to 7, the nature of which can be very varied, in the same way as in the previous embodiments.

One of the important advantages of this fourth embodiment is that it is possible to form a diamond cable on which significant interruptions of diamond concretions are avoided. These interruptions are, in fact, the causes of snagging when sawing parts of reduced thickness, such as for example metal plates. According to a fifth embodiment of the diamond cable, according to the invention, unlike what is the case for the previous embodiment, the diamond particles 3 are provided on a support 2 in the form of wires entwined in a substantially uniform manner with the core 3 of the cable.

Such an embodiment has been illustrated diagrammatically in FIG. 9.

In this embodiment, the core is for example composed of three flexible wires 4, 5 and 6 made of synthetic material, while the support 2, in the form of a wire, is made of steel on which the diamond particles have been previously fixed. by galvanic codeposition of these particles 1 and of a metal substrate or binder 13.

A variant of this embodiment resides in the fact that the fixing of the diamond particles 1 on the metal support 2 is carried out after the association of this support with the wire or wires forming the core 3 of the cable. This variant has the advantage that, in such a case, the diamond particles will only be present on the visible external parts of the support 2, not on those hidden between the wires 4 to 6 of the core 3 of the cable. In yet another variant, a central support cable 12 is provided. In this case, the braiding of the other support wires takes place at the periphery, as shown in FIGS. 10 and 11.

In addition, in FIG. 11, it is noted that, as mentioned above, the diamond particles 1 are only presented on the visible faces of the support 2 in the form of a wire.

In a concrete example of the embodiment according to FIG. 7, the width of the strip support is 3.5 mm and the distance between two turns is 10 mm, while the outside diameter is 6.5 mm, the diameter of the core being 5.0 mm. The galvanic binder 13 is formed from nickel and the diamond concentration is FEPA C100, in grain ASTM MESH 40/50. The supporting cable 3 is formed from drawn galvanized steel. While the support strip 2 is made of rolled mild steel.

FIG. 12 relates to a sixth embodiment of the cable, according to the invention, in which the supports 2 consist of grains carrying the diamond particles 1. These grains are known per se and generally consist of an agglomerated material obtained by sintering a metal powder in the presence of diamonds. They normally have a diameter of 200 to 600 microns into which diamonds with a diameter of 10 to 100 microns are incorporated. These grains are inserted and held in the weft of woven threads 4 to 6, of which the core 3 of the cable is made up, in such a way as to be distributed in a substantially uniform manner on the surface of this core, as illustrated diagrammatically by FIG. 12. The fixing of these grains can advantageously be improved by impregnating and covering these woven wires with a layer of suitable synthetic material 10 having sufficient flexibility to allow the winding of the cable on a pulley of a conventional sawing machine. .

According to a variant of this embodiment, the diamond cable can comprise an axial carrying cable, as in the embodiment according to FIGS. 10 and 11, around which the braiding of the other wires takes place, between which the diamond grains are held . The method according to the invention for manufacturing a cable, as described above and shown in the various appended figures, essentially comprises the lateral association of at least two continuous wires 4 to 7 and the immobilization of diamond particles 1 with respect to these wires.

Advantageously, in the case where the diamond particles 1 are provided on a series of separate supports 2 intended to be spaced on the core 3 of the cable, as shown in FIGS. 1 to 6, for example, at least two continuous wires are moved simultaneously , but preferably at least three, 4, 5 and 6 in their longitudinal direction by interlacing them over a predetermined distance of their length. Next, a support 2 provided on its outer surface with diamond particles 1 is positioned against the rear end of this portion of interlaced wires thus formed 9, engaging the non-interlaced wires, extending upstream from the portion of interlaced wires , in this support 2. The following operation consists in forming upstream of the latter a new portion of interlaced son 9 by holding it between the two portions of consecutive interlaced son. These two interleaving and positioning operations are alternately repeated as many times as necessary depending on the desired length of the diamond wire to be manufactured.

In practice, use is generally made of at least three separate continuous wires with which portions of braided wires of constant length are formed, between which the supports 2 provided with diamond particles 1 are inserted.

More particularly, in the case where the supports 2 have passageways 8 in their wall for the carrying wires 4 to 7 in shape notches, as shown in Figures 1 to 3, there is interposed, as the braiding of these threads progresses, such a support after each braided portion of a predetermined length between the non-braided threads and that of so that each of these threads comes to be housed in a notch in this support 2. Consequently, there is no longer any operation of threading ent of the supports after each portion of braided threads. Therefore, theoretically infinite lengths of diamond cables can be envisaged.

In addition, braiding or stranding machines existing in the textile industry and the cable industry can be used with an adaptation for the introduction and positioning of the supports at regular distances between the braided or woven threads without this influences the braiding or weaving operation itself. In this way, this method of manufacturing diamond cables can be fully automated, which significantly reduces the cost of the finished cable.

Thus, Figure 13 schematically shows a rope braiding machine. It comprises in the particular case represented in this figure, four coils 13, 14, 15 and 16 from which the wires 4 to 7 take place. These coils are mounted in free rotation around their central axis on a horizontal plate 17 which is driven in rotation by a motor 18 via a toothed transmission 19, as indicated by the arrow 20. In this way, during the drive of the plate 17, each turn of the latter, each of the coils 13 to 16 makes a complete revolution around its axis. The wires 4 to 7 coming from these coils are pulled through a distribution ring 21 which is followed by a braiding head 22 where the assembly of these wires takes place.

The advancement of the wires and the unwinding of the latter from their respective coils is caused by the rotation of a drum 23 around which the finished diamond cable is wound. Supports 2 provided with diamond particles are intermittently brought by means of a manipulator arm 24 to the entry of the braiding head 22 where supports 2 are incorporated between the wires 4 to 7, just before their braiding, at intervals regular while the drum 23 is stopped. The latter as well as the plate 17 therefore advance step by step.

Furthermore, in the case where the support 2 for the diamond particles is formed from at least one continuous wire or strip, as in the embodiments shown in FIGS. 7 and 8, this wire is entwined in a substantially continuous manner with at least one wire forming part of the core 3 of the cable. Such a diamond cable, according to these embodiments, can be manufactured by a stranding machine commonly used in cable making.

Figures 14 and 15 schematically show such a machine. It comprises an unwinding drum 14 for a carrier cable already stranded or braided according to the techniques used in cable or cordage and intended to form the core 3 of the diamond cable according to the invention. This carrying cable 3 passes through the center of an annular device 25 carrying in free rotation about their axis two coils 15 and 16 on which are wound metal wires or bands 2a and 2b called a cover and forming the support 2 for the diamond particles 1 . The annular device 25 is rotated around its center as indicated by the arrow 26 in Figure 15. At the same time, the coils

15 and 16 are rotated about their respective axes.

The wires or bands 2 are wound around the carrying cable 3 during the advancement of the latter. This advancement is caused by a drive drum 23 around which is wound the carrying cable 3 provided with wires or bands 2. These. wires or bands 2 are wound helically around the carrying cable 3 according to a pitch which is determined by the ratio of the rotational speeds of the drum 23 and the annular device 25. Advantageously, the wire or the support band 2 for the diamond particles 1 is produced in an electrically conductive material, in particular steel, while the other wire or wires, forming the core 3 of the diamond wire, are made of a non-electrically conductive material. In such a case, according to the invention, the diamond particles 1 and an electrically conductive binder 13 are co-deposited by electrolysis on the wire or the support strip 2.

Furthermore, the number of coils on the annular device 25 can be very variable. Thus, for the manufacture of a diamond cable according to the embodiment shown in FIG. 7, comprising only a support strip 2, it suffices to provide a single coil on the annular device. It is of course also possible to provide more than two coils depending on the number of wires or support bands 2 desired for covering the wires forming the core 3 of the cable. Finally, FIG. 16 schematically shows an installation which may be suitable for the manufacture of the embodiment shown in FIG. 12. Such an installation comprises a braiding machine of the type illustrated by FIG. 13 which is supplemented by a supply device for diamond grains 2, as described above with reference to FIG. 12, and by means 27 and 28 for guiding the cable during its braiding which make it possible to ensure that these grains can be distributed in a substantially uniform manner and essentially on the surface of the braided wires.

As a feeding device, use can be made of a known device, comprising a funnel leading to an Archimedes screw which makes it possible to very meticulously regulate the flow rate for supplying the diamond grains between the guide means 27 and 28 to 1. where the braiding of the threads takes place.

The conical guide means 28 engaging the core of the braided wires can be replaced by an axial support cable in the case where it is desired to manufacture a diamond cable provided with such a cable, as for example in the embodiment illustrated by Figures 10 and 11. The invention is of course not limited to the various embodiments described and shown above as well as regards the diamond cables themselves as the installations for manufacturing them. Thus, for example, in the embodiment according to FIGS. 9 to 11, it is possible to combine bands and support wires 2. Finally, the diamond cable could be formed or include flat diamond braids.

Claims

1. Diamond cable comprising diamond particles and at least two continuous wires (4 to 7) at least one of which forms part of the core (3) of the cable, these wires being associated with one another in a way such as to immobilize the diamond particles with respect to this core, this cable being characterized in that diamond particles held in a metallic binder (13) extend in a substantially uniform manner around the axis of the cable and make radially protrusions relative to the soul of the latter.

2. Cable according to claim 1, characterized in that, the diamond particles (1) being fixed on a series of supports (2) spaced on the core (3) of the cable, the latter comprises at least three continuous wires ( 4 to 7) interleaved between which said supports (2) are inserted.

3. Cable according to claim 2, characterized in that the supports (2) are formed by elements having, on the one hand, a surface of revolution, which carries the diamond particles, (1) and having, on the other hand , passageways (8) for each of the aforementioned wires (4 to 7) of the core (3) of the cable, these passageways (8) extending substantially parallel to the axis of the cable.

4. Cable according to claim 3, characterized in that the aforementioned passageways (8) are formed by notches in the surface of revolution of the supports (2), substantially of the same depth, extending along the axis of the cable and at substantially constant angular distances from each other.

5. Cable according to claim 4, characterized in that a binder (10), formed for example of a resin, surrounds the wires (4 to 7) in the aforementioned notches (8).

6. Cable according to claim 3, characterized in that the aforementioned passageways (8) are formed of channels extending through the elements (2), substantially parallel to the axis of the cable, at substantially constant radial distances. with respect to this axis and substantially constant angular distances from one another.

7. Cable according to claim 1, characterized in that the diamond particles (1) are provided on a continuous helical support (2) extending around the core (3) of the cable.

8. Cable according to claim 1, characterized in that the diamond particles (1) are provided on a support (2) in the form of a wire entwined in a substantially uniform manner with the core (3) of the cable.

9. Cable according to claim 8, characterized in that it comprises at least one electrically conductive wire (2) and at least one non-electrically conductive wire (4 to 7) entwined with the conductive wire, the diamond particles being codeposited by electrolysis on the conductive wire (2) with an electrically conductive binder (10).

10. Cable according to claim 1, characterized in that, the core (3) of the cable being formed of a set of interlaced wires, the diamond particles (1) are provided on grains or granules distributed substantially uniformly on the surface of this core (3) and inserted in a substantially immobile manner between the wires of the latter.

11. Cable according to any one of claims 1 to 10, characterized in that it is provided a relatively flexible outer layer (10) of plastic material from which the diamond particles (1) protrude.

12. Method for manufacturing a diamond cable (1) according to any one of claims 1 to 11, characterized in that it comprises the association side by side of at least two continuous wires (4 to 7 ) and the immobilization of these diamond particles (1) relative to these wires.

13. The method of claim 12, characterized in that, in the case where diamond particles are provided on a series of separate supports (2) intended to be spaced on the core (3) of the cable, at least simultaneously moves two continuous wires (4 to 7) in their longitudinal direction by intertwining them over a certain distance of their length, so that a support (2) is positioned against the rear end of a portion of interlaced wires (9) ) provided on its outer surface with diamond particles (1) by engaging the separate wires (4 to 7), extending upstream of the portion of interlaced wires, in this support (2), so that one then forms in upstream of this support (2) a new portion of interlaced wires (9) while maintaining the latter between the two portions of consecutive interlaced wires, in that these two operations of interlacing the wires and positioning of supports are repeated as many once he's born ssaire depending on the desired length of the diamond cable to be manufactured.

14. Method according to claim 13, characterized in that use is made of at least three separate continuous threads (4 to 7) with which portions (9) of braided threads (9) of length are formed substantially constant between which are inserted supports (2) provided with diamond particles (1).

15. Method according to claim 14, characterized in that, in the case where the supports (2) have in their wall passageways (8) for the wires (4 to 7) in the form of notches, one interposed, as the braiding of these threads progresses, such a support (2), after each braided portion (9) of a predetermined length, downstream of this portion, between the non-braided threads (4 to 7) leading to this last, so that each of these wires (4 to 7) comes to be housed in a notch (8) of this support (2) and so that the latter is clamped between two portions of consecutive braided wires.

16. Method according to claim 12, characterized in that, in the case where the support (2) for the diamond particles (1) is formed of at least one continuous wire, this wire is entwined with at least one continuous wire ( 4 to 7) forming part of the core (3) of the cable.

17. Method according to claim 12, characterized in that, in the case where the support (2) comprises at least one continuous electrically conductive wire, this wire is entwined with at least one non-conductive wire (4 to 7) d electricity and electroplating diamond particles (1) and an electrically conductive binder on said electrically conductive wire.

18. Installation for the manufacture of a diamond cable, in particular cable according to any one of claims 1 to 6 and 10, characterized in that it comprises a braiding device (13 to 23, 25) cooperating with a device feed (24) for supports (2) provided with diamond particles, this feed device (24) comprising means allowing these supports (2) to be engaged with the wires 4 to 7 downstream of the braiding device so that these supports are inserted between these braided wires (4 to 7).