Super alloy saw blade

Abstract

A separating tool (1) having a tooth carrier (2) and a plurality of teeth (3) arranged on the tooth carrier (2) for separating a workpiece made of steel, which workpiece has a high temperature. The tooth carrier (2) consists of a superalloy (10) and / or is coated with a heat-insulating layer (11) and / or a hard material layer (12).

Description

Technical Field

[0001] This invention relates to the field of steel manufacturing technology, and particularly to the field of separating raw workpieces made of steel at a high temperature of at least 750°C.

[0002] Such high temperatures occur after the manufacture and heat treatment of the original workpiece made of steel. The original workpiece, in particular, should then be separated and reprocessed. Background Technology

[0003] It is generally known in the prior art that oxygen cutters are used to separate raw workpieces made of steel at temperatures of at least 750°C. This produces high emissions, necessitating suction. Even with mandatory protective clothing, the use of oxygen cutters is dangerous and unhealthy for the operator.

[0004] Furthermore, it is generally known in the prior art that such separation methods are implemented using cutting wheels. If workpieces of different diameters need to be separated, then the diameter of the cutting wheel must be selected very drastically. Alternatively, different cutting wheels with different diameters must be used for different workpieces with different diameters. Therefore, additional costs are incurred when changing cutting wheels. Cutting wheels experience high wear and must be frequently replaced in such demanding applications.

[0005] German patent application DE 16 52 756 A discloses a circular saw blade having a tooth carrier and a plurality of teeth disposed on the tooth carrier. The circular saw blade is used to separate hot-rolled steel at temperatures on the order of approximately 700 to 1000°C. For this purpose, the teeth and tooth grooves have a special geometry.

[0006] Chinese patent application CN 109 530 806 A discloses a circular saw blade having a toothed carrier and a plurality of teeth disposed on the toothed carrier. The teeth have cutting inserts made of superalloy. Summary of the Invention

[0007] The objective of this invention is to provide a separation tool that enables reliable, efficient, and environmentally friendly separation of steel workpieces at high temperatures.

[0008] According to the present invention, the objective of the invention is achieved through the features of the preferred embodiment of the invention.

[0009] Other preferred designs of the present invention can be derived from optional technical solutions.

[0010] This invention relates to a separation tool comprising a tooth carrier and a plurality of teeth disposed on the tooth carrier. The tooth carrier is composed of a superalloy.

[0011] Furthermore, the present invention also relates to a tooth carrier for a separation tool having the tooth carrier and a plurality of teeth disposed on the tooth carrier, wherein the tooth carrier is composed of a superalloy.

[0012] The present invention also relates to a separation tool, splitting tool or cutting tool used as a high-temperature steel separation tool for separating a raw workpiece made of steel at a temperature of at least 750°C.

[0013] Furthermore, the present invention also relates to a cutting tool comprising a tooth carrier made of a superalloy and a plurality of teeth disposed on the tooth carrier, used as an underwater workpiece separation tool for separating workpieces underwater or as a tool for separating workpieces using pure water as a cooling lubricant.

[0014] definition:

[0015] Separation tool: In this application, a separation tool is understood to be a tool conforming to standard DIN 8588, and a manufacturing method that uses such a tool to perform separation. According to this standard, the main types of separation include division, cutting with geometrically defined edges, and cutting with geometrically indeterminate edges.

[0016] Segmentation: In this application, segmentation is understood as the mechanical separation of workpieces without generating debris in accordance with standard DIN 8588.

[0017] Cutting: In this application, cutting or machining is understood as the mechanical separation of a workpiece in accordance with standard DIN 8588, with the generation of chips.

[0018] Cutting tools: In cutting or machining, a distinction is made between cutting with a geometrically defined cutting edge and cutting with a geometrically indeterminate cutting edge. Sawing according to standard DIN 8589-6 also falls under the category of cutting with a geometrically defined cutting edge. However, according to the standard, sawing does not fall under the category of cutting with a geometrically indeterminate cutting edge. For this reason, the appropriate and generalized terms "separating tool" or "cutting tool" are used in this application. However, nevertheless, in practice, cutting tools with cutting particles in this technical field are mostly referred to as saw bands or saw blades.

[0019] Saw blade: In this application, saw blade is understood to be an elongated saw band, a bow-shaped saw blade, a circular saw blade, a machine saw blade, a saber saw blade, a jigsaw blade, or other possible structural shapes of saw blade.

[0020] Tooth carrier: In this application, a tooth carrier is understood as a portion of a separation tool on which the teeth of the separation tool are disposed. Often, in this respect, it also refers to the "base" of the separation tool. However, the term "tooth carrier" should better express that it refers to a portion of the separation tool that itself cannot be called a tooth, but on which teeth are disposed. It should be noted that there is a difference between the tooth carrier and the tooth in terms of both function and material. Functionally, a tooth begins with its tooth base in the region of the tooth root. However, this tooth base is often composed of the same material as the tooth carrier and is integrally formed with the tooth carrier. In other words, one part of the material realizes the function of the tooth carrier, and another part realizes the function of the tooth base and thus the tooth. Thus, in terms of material, separation exists more away from the tooth carrier in the region of the tooth tip.

[0021] Superalloys: In this application, superalloys are understood to be metallic materials with complex compositions (iron, nickel, platinum, chromium, or cobalt-based, along with additional elements cobalt, nickel, iron, chromium, molybdenum, tungsten, rhenium, ruthenium, tantalum, niobium, aluminum, titanium, manganese, zirconium, carbon, and / or boron) that are intended for high-temperature applications and conform to a generally accepted professional definition. Superalloys exhibit high heat resistance and high creep stability. One example is a nickel-based superalloy.

[0022] Thermal insulation layer: In this application, a thermal insulation layer is understood as a coating applied to a material that prevents the material temperature from rising too drastically due to its low thermal conductivity during high-temperature applications. Examples are zirconium oxide and gadolinium zirconium.

[0023] Hard material layer: In this application, a hard material layer is understood as a coating composed of hard materials applied to a material. The hard material layer has a hardness of at least 2000 HV1. Furthermore, the hard material layer exhibits high heat resistance. An example is a layer of aluminum chromium nitride (AlCrN) and nanocomposite materials.

[0024] Additional explanation

[0025] A completely new type of separation tool is used for separating hot workpieces made of steel. This specifically relates to the separation of raw workpieces made of steel during the steel manufacturing process.

[0026] Although the original workpiece has a very high temperature of at least 750°C, the separation is still achieved using separation tools, splitting tools, or cutting tools. Until now, in existing technologies, it has been considered impossible to perform this method with cutting tools due to the high temperature. Now, for the first time, this prejudice has been overcome by using a tooth carrier composed of a superalloy.

[0027] Superalloys possess sufficiently high heat resistance and creep stability, making them suitable for such high-temperature applications. A further characteristic of superalloys is that they can withstand structural loads (high heat resistance) at approximately 90% of their melting temperature. Therefore, this novel tool can also be referred to as a superalloy separation tool.

[0028] Additionally, the tooth carrier can be coated with a heat-insulating layer. This enables the separation tool to have the required structural load-bearing capacity for the aforementioned high-temperature applications.

[0029] Additionally, the tooth carrier can be coated with a layer of hard material. This enables the separation tool to have the required structural load-bearing capacity for the aforementioned high-temperature applications.

[0030] In addition to the tooth carrier, the tooth may be entirely or partially composed of a superalloy and / or coated with a heat-insulating layer and / or a hard material layer. However, the tooth tip and / or cutting edge may be composed of a different material or not coated with a heat-insulating layer. However, the tooth tip and / or cutting edge may be coated with a hard material layer.

[0031] At high temperatures, separation is achieved differently than it would be under significantly lower temperatures typically present during cutting. A small amount of debris may be formed, or no debris may be formed at all. At least part of the separation process can be said to be achieved in the sense of discharging a portion of the flowable material from the original workpiece made of steel. Therefore, separation tools are referred to in this application. However, this remains unchanged in that the tool is a tool that conforms to the definition and specific characteristics of a cutting tool.

[0032] This new separation tool enables the processing of high-temperature steel directly after manufacturing and heat treatment, without prior cooling to room temperature. In other words, the original workpiece does not require a laborious cooling process for separation, and therefore does not need to be reheated to the processing temperature for further processing. This results in savings in time, energy, and cost. Furthermore, analytical steps for subsequent inspection and analysis of the original workpiece can be implemented earlier.

[0033] Separation tools specifically refer to sawing tools, particularly saw blades or circular saw blades. If the separation tool has teeth with geometrically indeterminate cutting edges, then by standard it does not refer to a sawing tool or saw blade, but rather to other cutting tools. However, if the starting point for the application of the separation tool is to prevent the generation of chips due to high temperatures, then such a tool is called a splitting tool by standard. However, there is no change in its geometry.

[0034] This separating tool is not intended for use in any other cutting method that employs a geometrically defined cutting edge, as per standard DIN 8589. It is particularly suitable for turning, drilling, and milling.

[0035] Superalloys enable the application of separation tools at temperatures of at least approximately 750°C, particularly at least approximately 800°C, particularly at least approximately 900°C, particularly at least approximately 1000°C, particularly between approximately 800°C and 1400°C, particularly between approximately 900°C and 1300°C, and particularly between approximately 1000°C and 1300°C. The strength and creep stability inherent in superalloys are sufficient to allow separation methods to be carried out without significant damage to the tools.

[0036] In addition, superalloys are particularly resistant to corrosion.

[0037] Superalloys can refer to nickel-based superalloys. In nickel-based superalloys, the main alloying component is nickel. At least one other chemical element is present as an alloying element. Such nickel-based superalloys possess the desired characteristics to meet the intended application purpose. The melting temperature is approximately 1300°C. The heat resistance and, consequently, the permissible application temperature is approximately 1200°C.

[0038] The insulation layer can be, in particular, zirconium oxide, gadolinium zirconium bromide, mullite, lanthanum zirconium bromide, or yttrium-stabilized zirconium oxide. The heat resistance of the insulation layer is, in particular, at least 800°C, in particular at least 900°C, and particularly between about 1000°C and 1400°C.

[0039] The hard material layer is composed of hard materials. Specifically, it may involve titanium nitride (TiN), titanium carbonitride (TiCN), titanium aluminum nitride (TiAlN), titanium aluminum carbonitride (TiAlCN), titanium aluminum nitride (AlTiN), titanium aluminum chromium nitride (AlTiCrN), aluminum chromium nitride (AlCrN), zirconium chromium nitride (ZrCrN), zirconium nitride-zirconium nitride (CrN-Cr), zirconium nitride (CrN), dizirconia nitride (Cr2N), boron carbonitride (BCN), titanium boron nitride (TiBN), titanium diboride (TiB2), or diamond-like carbon (DLC). Nanocomposite material layers may also be involved. The hardness of the hard material layer is particularly between about 2000 HV1 and 5000 HV1, particularly between about 3000 HV1 and 4500 HV1. The heat resistance of the hard material layer is particularly at least 800°C, particularly at least 900°C, particularly between about 1000°C and 1200°C.

[0040] To ensure that the separation tool as a whole—and not only the tooth carrier—possesses the required strength and creep stability at the present high temperatures, suitable measures are taken regarding the materials of the teeth, tooth tips, and cutting edges. These measures are distinguished by how the separation tool is constructed, for example, as a saw blade with protrusions made of superalloy and hard metal inserts fixed thereto, or as a separation tool with tooth tips made of superalloy, wherein the tooth tips are covered with cutting particles to form multiple geometrically indeterminate cutting edges. Details will be described below. Preferably, the overall heat resistance of the separation tool is between approximately 1000°C and 1300°C.

[0041] The teeth of a separating tool can each have a tooth tip with a geometrically defined cutting edge. That is, the method performed using this separating tool also falls under the category of cutting using a geometrically defined cutting edge. This cutting is also called sawing. Therefore, this separating tool involves a saw blade. This saw blade can be configured as a saw band, a circular saw blade, or a saw blade with other geometric structures. If a saw band is involved, then the saw band can be called a superalloy saw band.

[0042] The cutting edge of the tooth can have a cutting surface including a negative cutting angle. It has been shown that this negative cutting angle contributes to significantly better cutting results compared to a positive cutting angle. This is because a cutting surface with a negative cutting angle allows for better removal of material from the cutting channel. At the high temperatures present here, little cutting is involved; rather, it involves expelling or squeezing the steel out of the cutting channel.

[0043] The tooth tip can be coated with a hard material layer (or said hard material layer). The hard material layer contributes to a reduction in the temperature sensitivity of the tooth tip, thus making not only the tooth carrier suitable for use with superalloys but also the tooth tip suitable for applications requiring high temperatures. Furthermore, the hard material layer improves the hardness and wear resistance of the tooth. Moreover, the hard material layer provides effective corrosion protection.

[0044] The hard material layer can extend not only at the tooth tip but also on other parts of the tooth. The hard material layer can also extend across the entire tooth or even partially across the tooth carrier. In these cases, the entire tooth achieves the desired hardness through the hard material layer. The desired heat resistance is based on the presence of a superalloy-bonded insulation layer and / or the hard material layer.

[0045] Each tooth can be formed by a protrusion and an insert, wherein the protrusion is disposed on a tooth carrier and the insert is disposed on the protrusion. The protrusion being "disposed" on the tooth carrier should also be understood as a one-piece construction, meaning that the protrusion is also composed of a superalloy. Thus, the insert forms the tooth tip and cutting edge.

[0046] The insert can be made of hard metal. In this case, we are referring to saw blades equipped with hard metal. Hard metal specifically refers to steels alloyed with tungsten and / or cobalt. Such hard metals have heat resistance up to approximately 900°C.

[0047] Instead of hard metal, the insert can also be made of high-speed steel (HSS). High-speed steel has a heat resistance of up to approximately 600°C. To improve the heat resistance of the insert, it is coated with a layer of hard material and / or a heat-insulating layer.

[0048] The insert can be secured to the protrusion by fusion welding or high-temperature brazing. This connection method ensures the required secure connection between the protrusion and the insert, even at high temperatures.

[0049] Instead of the geometrically defined cutting edge described above, the teeth may each have a tip covered with cutting particles to form multiple geometrically indeterminate cutting edges. The cutting particles refer to cutting particles with the desired hardness and heat resistance. They can be, in particular, cubic boron nitride (CBN), cutting ceramics, hard metals, or combinations thereof.

[0050] Separation tools can also involve so-called bimetal saw blades, particularly bimetal saw bands. Such bimetal saw bands have a carrier section and an edge section fixed thereon. The edge section forms the tooth tips and cutting edges. That is, in this case, the carrier section is the tooth carrier. Therefore, the carrier section is composed of a superalloy and can be coated with a heat-insulating layer and / or a hard material layer.

[0051] In addition to their high heat resistance and creep stability when separating hot steel, the tooth carrier composed of superalloys also serves another purpose in another application. This relates to underwater workpiece separation, or to applications where water is used as a cooling lubricant. Specifically, the invention also relates to the application of a cutting tool comprising a tooth carrier composed of superalloys and a plurality of teeth disposed on the tooth carrier: used as an underwater workpiece separation tool for separating workpieces underwater, or used as a tool for separating workpieces using pure water as a cooling lubricant.

[0052] Thanks to the superalloy's high corrosion resistance, this new cutting tool is particularly well-suited for underwater applications. Such applications include, for example, separating contaminated or highly contaminated components, such as heat exchangers, pipes, steam generators, or reactor pressure vessels, during the dismantling of nuclear power plants. Another example application is underwater maintenance of steel structures for wind power equipment or in the oil or gas industry. If a cutting tool is left untouched by workpieces and exposed to water for extended periods, such as overnight, over a weekend, or during company holidays, there is an increased risk of corrosion. This risk is mitigated by the superalloy.

[0053] Another application example is cutting workpieces where only pure water can be used as a cooling and lubricating medium, because oil, for example, normally added to the cooling and lubricating medium, will contaminate the workpiece or enter the surface of the workpiece to be separated and damage the surface or adversely change its appearance.

[0054] Preferably, the entire separation tool has this corrosion resistance.

[0055] If the cutting tool is a bimetallic saw blade and it is determined to be used in an underwater application, then the edge line does not necessarily need to be composed of a high-temperature resistant material or have a high-temperature resistant coating. For example, tool steel or high-speed steel with the desired corrosion resistance can be used. That is, in this case, the corrosion resistance of the superalloy is utilized instead of its high-temperature resistance.

[0056] Superalloys, in particular, have a relatively high chromium content. The chromium content can be at least approximately 12%. This results in exceptionally good corrosion resistance.

[0057] The teeth of a separating or cutting tool can be arranged on a tooth carrier with equal spacing between them—that is, with a constant pitch. However, it is also possible that the teeth can be arranged on a tooth carrier with varying spacing between them—that is, with a variable pitch.

[0058] Teeth can be unrestricted. However, it is also possible that restricted teeth are involved.

[0059] Teeth can be constructed and arranged according to a so-called grouping technique. This means that repetitive groups of different teeth are arranged on a tooth carrier. The teeth in the group have different heights and / or widths, thus fulfilling different functions. However, it is also possible that the teeth are constructed in the sense of so-called pre-cutting and re-cutting techniques.

[0060] A novel strip-shaped separating tool (“saw band”) is used in a separator (“saw”) for separating workpieces made of steel. To achieve separation of the original steel workpiece during steel manufacturing—where the workpiece has a temperature of at least 750°C—the saw has a cooling mechanism for cooling the area of ​​the saw outside the sawing zone used for workpiece separation. This cooling is achieved using a suitable cooling medium. The cooling medium can be, for example, water, oil, or air. The saw band is clamped in the saw with a suitable band tension to compensate for length changes based on thermal expansion.

[0061] Advantageous improvements to the present invention arise from alternative technical solutions, the specification, and the drawings.

[0062] The advantages of the features and combinations thereof described in the specification are merely exemplary and may be applied substituted or cumulatively, without being required to be achieved by embodiments of the invention.

[0063] Regarding the disclosures in the original application documents and patents—excluding the scope of protection—the following applies: Additional features are apparent from the accompanying drawings, particularly the illustrated geometry and the relative dimensions of the various components, their relative arrangement, and functional connections. Features of different embodiments of the invention, or combinations of features from different claims, may also differ from the reference relationships chosen in the claims and are hereby taught. This also applies to features shown in separate views or mentioned in their description. These features may also be combined with features from different claims. Similarly, features listed in the claims may be omitted for other embodiments of the invention, but this does not apply to the independent claims of the granted patents.

[0064] The number of features mentioned in the claims and specification should be understood as the existence of exactly that number or a greater number, without the explicit application of the adverb "at least". That is, for example, if a cutting surface is mentioned, it should be understood that there is exactly one cutting surface, two cutting surfaces, or more cutting surfaces. These features may be supplemented by other features or constitute the unique features of the corresponding product.

[0065] The reference numerals included in the claims do not constitute a limitation on the scope of protection provided by the claims. The reference numerals are used solely to facilitate the understanding of the claims. Attached Figure Description

[0066] The invention is further illustrated and described below with the aid of preferred embodiments shown in the accompanying drawings.

[0067] Figure 1 A side view showing a portion of a first exemplary embodiment of the new, strip-shaped separation tool;

[0068] Figure 2 Showing the view from above Figure 1 The view of the detach tool in the middle;

[0069] Figure 3 A side view showing a portion of a second exemplary embodiment of the new, strip-shaped separation tool;

[0070] Figure 4 Show Figure 3 A detailed view of a portion of the separation tool;

[0071] Figure 5 A side view showing a portion of a third exemplary embodiment of the new, strip-shaped separation tool;

[0072] Figure 6A side view showing a portion of a fourth exemplary embodiment of the new, circular separation tool;

[0073] Figure 7 Show Figure 6 Detail A. Detailed Implementation

[0074] Figure 1 and 2 This view shows a portion of a first exemplary embodiment of a new, strip-shaped separation tool 1. This portion is indicated by corresponding break lines. Figure 1 The left and right regions of the view are marked. Such a strip-shaped separating tool 1 is also often referred to as a saw band (or saw blade) in the prior art.

[0075] The views in this and subsequent figures are to scale, so that the geometric relationships between the individual elements of the separating tool 1 can be understood from these figures.

[0076] The separation tool 1 has a tooth carrier 2 and a plurality of teeth 3 disposed on the tooth carrier 2. The teeth 3 may be formed entirely or partially as a single piece with the tooth carrier 2. In this case, the teeth 3 are arranged along the tooth carrier 2 in repeating groups of teeth 3 with geometrically different configurations. The teeth 3 are disposed on the tooth carrier 2 with varying pitches. However, the teeth 3 may also be disposed on the tooth carrier 2 without following the grouping technique and / or with a constant pitch.

[0077] Each tooth 3 has a tooth tip 7, which is disposed on the end of the corresponding tooth 3 opposite to the tooth carrier 2. Each tooth 3 is formed by a protrusion 4 of the tooth carrier 2 and an insert 5. The insert 5 is made of a material harder than the material of the protrusion 4 of the separating tool 1 and the tooth carrier 2. Preferably, the material of the insert 5 is a hard metal. However, other suitable materials may also be involved. The insert 5 is fixedly connected to its respective associated protrusion 4 (particularly by brazing or welding).

[0078] A cutting edge 6, forming a tooth 3, is formed on the insert 5. In this case, the cutting edge 6 is geometrically defined. The cutting edge 6 has a cutting surface 8, which includes a negative cutting angle. Here, the running direction 9 of the separating tool 1 extends from left to right. However, the cutting angle can also be positive or 0°.

[0079] The new separation tool 1 has a special material composition that enables reliable, efficient, and environmentally friendly separation of steel workpieces subjected to high temperatures. Another application possibility is to use the separation tool 1 for underwater workpiece separation or as a tool for separating workpieces using pure water as a cooling lubricant.

[0080] Therefore, the tooth carrier 2 is composed of superalloy 10. The protrusion 4 is also composed of the same superalloy 10. Additionally, the tooth carrier 2 can be coated with a heat-insulating layer 11 and / or a hard material layer 12. (In accordance with...) Figure 1 and 2 In the embodiment of the separation tool 1, layers 11 and 12 are absent, thereby... Figure 1 and 2 Reference numerals 11 and 12 are not mentioned in the accompanying drawings. Therefore, refer to the following drawings, in which layers 11 and 12 are partially present.

[0081] In this example, superalloy 10 is nickel-based superalloy 13. However, other superalloys 10 may also be involved.

[0082] Figure 3 and 4 Another exemplary embodiment of the new separation tool 1 is shown, which does not fall under the literal meaning of the independent claims. This again relates to the separation tool 1 having an elongated, band-shaped toothed support 2.

[0083] However, with Figure 1 , 2 The difference in the implementation of the separation tool 1 lies in that each of the teeth 3 has a tooth tip 7 covered with cutting particles 14 to form multiple geometrically indeterminate blades 6. The teeth 3 are arranged along the tooth carrier 2 at a constant pitch. In this embodiment of the separation tool 1, the tooth carrier 2 is not composed of superalloy 10, but is coated with a heat-insulating layer 11. However, it is also possible that the tooth carrier 2 is additionally composed of superalloy 10 and / or coated with a hard material layer 12.

[0084] Figure 5 Another exemplary embodiment of the new separation tool 1 is shown, which does not fall under the literal meaning of the independent claims. In this case, the separation tool 1 is a bimetallic saw blade having a carrier strip section 15 and an edge strip section 16 fixed thereon.

[0085] The edge segment 16 forms the tooth tip 7 and cutting edge 6 of the tooth 3. The remaining portion of the initially continuous strip-shaped edge segment 16 is removed by milling. The bearing strip segment 15 is coated with a hard material layer 12. The bearing strip segment 15 is not composed of superalloy 10 in this case. However, it may also be composed of superalloy 10 and / or coated with a heat-insulating layer 11.

[0086] Figure 6 and 7 A view showing another exemplary embodiment of the separating tool 1 is shown. In this case, the separating tool 1 is configured as a circular saw blade.

[0087] The tooth 3 is mounted on the tooth carrier 2 using a grouping technique and with varying pitch. A protrusion 4 is formed on the tooth carrier 2, and an insert 5 is fixed to this protrusion. The cutting surface 8 has a negative cutting angle. The tooth carrier 2 is composed of a superalloy 10. The tooth tip 7 and another portion of the protrusion 4 are coated with a hard material layer 12.

[0088] It should be noted that the different material compositions of the superalloy 10, the heat insulation layer 11, and the hard material layer 12 in the various embodiments can also be applied to the geometry of other embodiments.

[0089] List of reference numerals in the attached diagram:

[0090] 1. Separation tool

[0091] 2. Tooth bearing

[0092] 3 teeth

[0093] 4. Protrusion

[0094] 5 plugins

[0095] 6 blades

[0096] 7. Tooth cusp

[0097] 8. Cutting surface

[0098] 9. With running direction

[0099] 10 Super Alloy

[0100] 11. Insulation layer

[0101] 12 Hard material layers

[0102] 13 Nickel-based superalloys

[0103] 14. Cutting Particles

[0104] 15. Bearing belt section

[0105] 16. Edge line section.

Claims

1. A separation tool (1) comprising a tooth carrier (2) and a plurality of teeth (3) disposed on the tooth carrier (2), characterized in that, The tooth carrier (2) is composed of a superalloy (10) and is used to separate the original workpiece made of steel at a temperature of at least 750°C.

2. The separation tool (1) according to claim 1, characterized in that, The superalloy (10) is a nickel-based superalloy (13).

3. The separation tool (1) according to claim 1, characterized in that, Each tooth (3) has a tooth tip (7) with a geometrically defined cutting edge (6).

4. The separation tool (1) according to claim 3, characterized in that, The cutting edge (6) has a cutting surface (8) with a negative cutting angle.

5. The separation tool (1) according to claim 4, characterized in that, The tooth tip (7) is coated with a layer of hard material (12).

6. The separation tool (1) according to claim 1, characterized in that, The separation tool (1) is a saw blade.

7. The separation tool (1) according to claim 1, characterized in that, Each tooth (3) is formed by a protrusion (4) and a plug (5), wherein the protrusion (4) is disposed on the tooth carrier (2) and the plug (5) is disposed on the protrusion (4), wherein the plug (5) forms the tooth tip (7) and the cutting edge (6) of the tooth (3).

8. The separation tool (1) according to claim 7, characterized in that, The protrusion (4) is composed of superalloy (10).

9. The separation tool (1) according to claim 8, characterized in that, The plug-in (5) is made of hard metal.

10. The separation tool (1) according to claim 7, characterized in that, The plug (5) is fixed to the protrusion (4) by fusion welding or high-temperature brazing.

11. The separation tool (1) according to claim 1, 2 or 6, characterized in that, Each tooth (3) has a tooth tip (7) which is covered with cutting particles (14) to form multiple geometrically indeterminate blades (6).

12. The separation tool (1) according to claim 11, characterized in that, The cutting particles (14) are cubic boron nitride (CBN), cutting ceramics, hard metals, or combinations thereof.

13. The separation tool (1) according to any one of claims 1 to 6, characterized in that, The carrier belt section (15) is provided and the edge line section (16) is fixed on the carrier belt section, wherein the edge line section (16) forms the tooth tip (7) and the cutting edge (6) of the tooth (3) and the carrier belt section (15) is composed of super alloy (10).

14. A tooth carrier (2) for a separation tool (1) according to any one of claims 1 to 13, the separation tool having the tooth carrier (2) and a plurality of teeth (3) disposed on the tooth carrier (2), characterized in that, The tooth carrier (2) is composed of a superalloy (10) and is used to separate the original workpiece made of steel at a temperature of at least 750°C.

15. The tooth carrier (2) according to claim 14, characterized in that, The tooth carrier (2) is coated with a heat insulation layer (11) and / or a hard material layer (12).

16. An application of a separation tool (1) having a tooth carrier (2) composed of a superalloy (10) and a plurality of teeth (3) disposed on the tooth carrier (2) as a high-temperature steel separation tool for separating a raw workpiece made of steel at a temperature of at least 750°C.

17. The application according to claim 16, characterized in that, This separation takes place during steel manufacturing.

18. The application according to claim 16, characterized in that, The separation tool is constructed as a segmentation tool.

19. The application according to claim 16, characterized in that, The separation tool is constructed as a cutting tool.

20. The application according to any one of claims 16 to 19, characterized in that, The tooth carrier (2) is coated with a heat insulation layer (11) and / or a hard material layer (12).

21. An application of a separation tool according to any one of claims 1 to 13, the separation tool having a tooth carrier (2) composed of a superalloy (10) and a plurality of teeth (3) disposed on the tooth carrier (2), which serve as: Underwater workpiece separation tool for separating workpieces underwater; or A tool used to separate workpieces using pure water as a cooling and lubricating agent.

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