US20190024221A1 - Machining tool - Google Patents

Machining tool Download PDF

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US20190024221A1
US20190024221A1 US16/083,062 US201716083062A US2019024221A1 US 20190024221 A1 US20190024221 A1 US 20190024221A1 US 201716083062 A US201716083062 A US 201716083062A US 2019024221 A1 US2019024221 A1 US 2019024221A1
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content
hard material
weight
cemented hard
machining tool
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Christine Toufar
Uwe Schleinkofer
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Ceratizit Austria GmbH
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Ceratizit Austria GmbH
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Assigned to CERATIZIT AUSTRIA GESELLSCHAFT M.B.H. reassignment CERATIZIT AUSTRIA GESELLSCHAFT M.B.H. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: TOUFAR, Christine, SCHLEINKOFER, UWE
Publication of US20190024221A1 publication Critical patent/US20190024221A1/en
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
    • C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
    • C22C29/06—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
    • C22C29/08—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds based on tungsten carbide
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/10—Alloys containing non-metals
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
    • C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
    • C22C29/06—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
    • C22C29/067—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds comprising a particular metallic binder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F2005/001—Cutting tools, earth boring or grinding tool other than table ware
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2222/00—Materials of tools or workpieces composed of metals, alloys or metal matrices
    • B23B2222/28—Details of hard metal, i.e. cemented carbide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2222/00—Materials of tools or workpieces composed of metals, alloys or metal matrices
    • B23C2222/28—Details of hard metal, i.e. cemented carbide
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/04—Making non-ferrous alloys by powder metallurgy
    • C22C1/05—Mixtures of metal powder with non-metallic powder

Definitions

  • the present invention relates to a cutting machining tool for metal-containing materials and the use of a cemented hard material for a cutting machining tool for metal-containing materials.
  • Cemented hard material is a composite material in which hard particles which can in particular be composed of metal carbides and carbonitrides is embedded in a ductile metallic binder. Cemented hard material in which the hard particles are at least predominantly formed by tungsten carbide (WC) and the binder is a cobalt- or nickel-based alloy, in particular a cobalt-based alloy, is most widespread.
  • WC tungsten carbide
  • An alloy based on a metal means that this metal forms the main constituent of the alloy.
  • cutting machining tools use is made of both solid cemented hard material tools in which a cutting region is formed in one piece with the tool shaft of the cemented hard material and also tools having exchangeable cutting inserts made of cemented hard material fastened to a main element of the tool.
  • various regions can optionally be formed by different cemented hard material types.
  • the cutting machining tools are often also provided with a hard material coating which is deposited on the cemented hard material by means of, for example, a PVD (physical vapor deposition) process or a CVD (chemical vapor deposition) process.
  • cemented hard material in which the metallic binder is formed by a cobalt-ruthenium alloy (Co—Ru alloy) is sometimes used for the cutting inserts.
  • Co—Ru alloy can additionally comprise further elements.
  • these known cemented hard materials do not yet have the combination of a high hot strength, a fine grain size of the tungsten carbide grains and a high fracture toughness which is desired for many cutting machining applications.
  • the cutting machining tool has a base material composed of cemented hard material which has hard material particles embedded in a ductile metallic binder.
  • the metallic binder is a Co—Ru alloy.
  • the hard material particles are at least predominantly formed by tungsten carbide having an average grain size of the tungsten carbide of 0.1-1.2 ⁇ m.
  • the base material has a (Co+Ru) content of 5-17% by weight of the cemented hard material, an Ru content (ruthenium content) of 6-16% by weight of the (Co+Ru) content, a Mo content (molybdenum content) in the range 0.1-3.0% by weight of the cemented hard material, a content of Ti (titanium), Ta (tantalum) and/or Nb (niobium) of in each case ⁇ 0.2% by weight of the cemented hard material, and a V content (vanadium content) of ⁇ 0.3% by weight of the cemented hard material, preferably ⁇ 0.2% by weight.
  • the (Co+Ru) content is the total content (in % by weight) of cobalt and ruthenium in the cemented hard material, which is given by addition of the Co content (cobalt content) in % by weight and the Ru content (ruthenium content) in % by weight.
  • a high hot strength in particular, can be achieved using the Ru content in the range indicated.
  • the Ru content below about 6% by weight of the total binder content (i.e. the (Co+Ru) content)
  • no satisfactory improvement in the hot strength is achieved, while at an excessively high Ru content above about 16% by weight of the (Co+Ru) content, the microstructural properties are adversely affected.
  • molybdenum has a particularly advantageous effect on the properties of the cemented hard material, in particular a particularly advantageous combination of a fine grain size of the WC and a high fracture toughness.
  • the molybdenum can be added, in particular, in the form of Mo 2 C (molybdenum carbide), but addition as metallic molybdenum, for example, is also possible.
  • the addition of molybdenum in the amounts indicated has been found to be particularly advantageous. When Mo is added in larger amounts of more than 3.0% by weight, at least no further improvement in the properties of the cemented hard material is observed.
  • V content should not exceed about 0.3% by weight of the cemented hard material in order to avoid embrittlement and thus lowering of the fracture toughness.
  • the V content should preferably be less than 0.2% by weight of the cemented hard material.
  • Ti, Ta and/or Nb it can also be advantageous to add small amounts of Ti, Ta and/or Nb, with the addition being able, in particular, to be effected in the form of TiC, TaC, NbC or in the form of mixed carbides.
  • the cutting machining tool for metal-containing materials can, for example, be configured as a solid cemented hard material tool in which the cutting region provided for cutting machining is formed in one piece with a shaft composed of cemented hard material.
  • regions having different cemented hard material e.g. the cutting region has a different cemented hard material type than the shaft region.
  • the cutting machining tool can, for example, also be configured as an exchangeable cutting insert which is configured for being fastened to an appropriate tool holder.
  • the base material composed of cemented hard material in the cutting machining tool for metal-containing materials can optionally also be provided, in a manner which is known per se, with a hard material coating which can be formed, in particular, by means of a CVD (chemical vapor deposition) process or a PVD (physical vapor deposition) process.
  • the cutting machining tool for metal-containing materials according to the invention provides a particularly advantageous combination of high hot strength, fine grain size and high fracture toughness, which is, in particular, also suitable for cutting machining of materials which are difficult to machine, in particular high-alloy steels, titanium alloys and superalloys.
  • the composition of the base material can, in particular, be determined by elemental analysis by means of XRF (X-ray fluorescence analysis).
  • the cemented hard material has an Mo content in the range 0.15-2.5% by weight of the cemented hard material.
  • the positive effects of the Mo become particularly clearly apparent from an Mo content of about 0.15% by weight.
  • An addition of more than 2.5% by weight of the cemented hard material is also disadvantageous for cost reasons.
  • the average grain size of the tungsten carbide is 0.15 ⁇ m-0.9 ⁇ m. It has been found that, in particular, an advantageous combination of hardness, fracture toughness and hot strength, which allows not only use in exchangeable cutting inserts but also use as solid cemented hard material tool, is obtained at such grain sizes in combination with the indicated composition of the cemented hard material.
  • the cemented hard material additionally has a Cr content in the range 0-7.5% by weight of the (Co+Ru) content, preferably 2-7.5% by weight.
  • the addition of Cr as grain growth inhibitor in an amount of at least 2% by weight of the (Co+Ru) content is advantageous. Since Cr is soluble in the binder up to a certain percentage, the Cr content is appropriately based on the binder content of the cemented hard material, i.e. on the (Co+Ru) content. On the other hand, the Cr content has to be kept sufficiently low below about 7.5% by weight of the (Co+Ru) content in order that the wetting of the tungsten carbide grains by the cobalt is not adversely affected.
  • the Cr content is preferably less than the Ru content.
  • the Cr content is preferably less than half the Ru content.
  • the desired increase in the hot strength firstly is reliably attained and a relatively small average grain size of the tungsten carbide grains is achieved, but on the other hand the wetting of the tungsten carbide grains by the binder is not unnecessarily impaired and precipitates of chromium carbide are avoided.
  • the Ru content is from 8-14% by weight of the (Co+Ru) content.
  • a significant increase in the hot strength is reliably achieved as a result of the relatively high Ru content and, on the other hand, an excessively high Ru content, which would have an adverse effect on the microstructural properties, is also reliably prevented.
  • the content of Ti, Ta and/or Nb is in each case 0-0.15% by weight.
  • this content of Ti, Ta and/or Nb also allows the use of starting materials which already contain Ti, Ta and/or Nb in small amounts, e.g. as a result of a cemented hard material powder recovered in a recycling process.
  • the total content of (Ti+Ta+Nb) is preferably in the range from 0 to 0.2% by weight of the cemented hard material, more preferably from 0 to 0.15% by weight.
  • the additional total amounts of Ti, Ta and Nb are kept so small that the positive effects achieved by means of the Ru content and the Mo content and optionally the Cr content are not adversely influenced.
  • the cemented hard material has a WC content in the range 80-95% by weight.
  • the base material of the cutting machining tool can additionally be provided with a CVD or PVD hard material coating.
  • the properties of the cutting machining tool can be matched even better to the conditions in the machining of the metal-containing material.
  • machining without a further hard material coating can also be found to be advantageous.
  • the cutting machining tool is configured as a solid cemented hard material tool with a cutting region formed in one piece with a shaft.
  • the combination of high hot strength, high hardness and at the same time relatively high fracture toughness which can be achieved by means of the composition indicated has been found to be particularly advantageous for, in particular, such cutting machining tools.
  • the cemented hard material has hard material particles embedded in a ductile metallic binder.
  • the metallic binder is a Co—Ru alloy.
  • the hard material particles are at least predominantly formed by tungsten carbide having an average grain size of the tungsten carbide of 0.1-1.2 ⁇ m.
  • the cemented hard material has a (CO+Ru) content of 5-17% by weight of the cemented hard material, an Ru content of 6-16% by weight of the (Co+Ru) content, an Mo content in the range 0.1-3.0% by weight of the cemented hard material, a content of Ti, Ta and/or Nb of in each case ⁇ 0.2% by weight of the cemented hard material, preferably in each case ⁇ 0.15% by weight, and a V content of ⁇ 0.3% by weight of the cemented hard material, preferably ⁇ 0.2% by weight.
  • the cemented hard material has a Cr content of 2-7.5% by weight of the (Co+Ru) content.
  • Cr content As starting powder for setting the Cr content, it is possible to use, in particular, Cr 3 C 2 powder.
  • FIGS. 1 a ) and b ) schematic depictions of a cutting machining tool for metal-containing materials according to a first embodiment
  • FIG. 2 a schematic depiction of a cutting machining tool for metal-containing materials according to a second embodiment having a tool main element which accommodates the cutting machining tool;
  • FIG. 3 an electron micrograph at 10 000 ⁇ enlargement of a base material composed of cemented hard material for a cutting machining tool for metal-containing materials according to a first example of an embodiment
  • FIG. 4 an electron micrograph at 10 000 ⁇ enlargement of a base material composed of cemented hard material for a cutting machining tool for metal-containing materials according to a second example of an embodiment.
  • FIG. 1 a A first embodiment of a cutting machining tool 1 for metal-containing materials is shown schematically in FIG. 1 a ) and FIG. 1 b ), with FIG. 1 a ) being a schematic end face view along a longitudinal axis of the cutting machining tool 1 and FIG. 1 b ) being a schematic side view in a direction perpendicular to the longitudinal axis.
  • the cutting machining tool 1 for metal-containing materials is, according to the first embodiment, configured as a solid cemented hard material tool having a cutting region 3 formed in one piece with a shaft 2 .
  • the cutting machining tool 1 for metal-containing materials is configured as milling cutter in FIG. 1 a ) and FIG. 1 b ), it is also possible, for example, to configure the solid cemented hard material tool for other cutting machining operations, e.g. as drill, reamer, deburrer, etc.
  • the cutting machining tool 1 has a base material composed of cemented hard material 4 which has hard material particles 6 embedded in a ductile metallic binder 5 .
  • the metallic binder 5 is a Co—Ru alloy which comprises cobalt and ruthenium together with other alloying elements, as will be explained below.
  • the hard material particles 6 are at least predominantly formed by tungsten carbide, with the WC grains having an average grain size in the range from 0.1 ⁇ m to 1.2 ⁇ m. Apart from the WC grains, further hard material particles such as TiC, TaC, NbC, etc., can be present in relatively small amounts.
  • the cemented hard material has a total content of cobalt and ruthenium ((Co+Ru) content) of 5-17% by weight of the cemented hard material, with the Ru content being from 6 to 16% by weight of the (Co+Ru) content.
  • the cemented hard material additionally has a molybdenum content in the range from 0.1 to 3.0% by weight of the cemented hard material.
  • a content of Ti, Ta and Nb is in each case less than 0.2% by weight of the cemented hard material and a vanadium content is likewise less than 0.3% by weight, preferably less than 0.2% by weight.
  • the cemented hard material can also preferably comprise chromium, with a chromium content preferably being in the range 2 to 7.5% by weight of the (Co+Ru) content.
  • the production of the cutting machining tool 1 is carried out in a powder-metallurgical production process as will be described below with reference to specific examples.
  • a one-piece configuration made up of a single cemented hard material is present in the embodiment, it is also possible, for example, to make various regions of the cutting machining tool 1 of different cemented hard material types.
  • FIG. 2 A second embodiment of a cutting machining tool 100 for metal-containing materials is depicted schematically in FIG. 2 .
  • the cutting machining tool 100 according to the second embodiment is configured as an exchangeable cutting insert which is configured for fastening to a tool main element 101 .
  • a cutting insert for turning is depicted schematically as cutting machining tool 100 in FIG. 2
  • the cutting insert can also be configured for a different type of machining, e.g. for milling, drilling, etc.
  • the specific cutting insert depicted is configured for fastening by means of a fastening screw, a configuration for fastening in another way, e.g. for fastening by means of a clamp, a clamping wedge, etc., is also possible.
  • the cutting machining tool 100 according to the second embodiment also has a base material composed of cemented hard material 4 as has been described with reference to the first embodiment.
  • the production of the cemented hard materials as base material for a cutting machining tool for metal-containing materials was in each case carried out in a powder-metallurgical production process, with the starting powders, i.e. WC powder, Co powder, Ru powder, Mo 2 C powder and optionally Cr 3 C 2 powder and/or VC powder in each case being mixed with one another in a first step.
  • the starting powders i.e. WC powder, Co powder, Ru powder, Mo 2 C powder and optionally Cr 3 C 2 powder and/or VC powder
  • no Ru powder was used.
  • Co powder use was made of a powder having an average particle size in the range from 0.6 to 1.8 ⁇ m, especially having an average particle size of about 0.8 ⁇ m (FSSS 1 ⁇ m).
  • Ru powder use was made of a powder having a relatively large average particle size of about 38.5 ⁇ m which was available, but other Ru powders having, for example, particle sizes in the range from ⁇ 1 ⁇ m to 95 ⁇ m can readily also be used.
  • Cr 3 C 2 powder having an average particle size in the range of about 1-2 ⁇ m was used.
  • the WC powder used had an average particle size in the range 0.3-2.5 ⁇ m, especially about 0.8 ⁇ m, for the.
  • the Mo 2 C powder used had an average particle size of about 2 ⁇ m.
  • the powder mixture was milled with addition of a milling medium comprising diethyl ether and customary pressing aids (e.g. paraffin wax) for about 3 hours in an attritor mill.
  • a milling medium comprising diethyl ether and customary pressing aids (e.g. paraffin wax) for about 3 hours in an attritor mill.
  • the suspension obtained in this way was subsequently spray-dried in a manner known per se in a spray drier.
  • Rod-shaped green bodies were subsequently produced by dry bag pressing in the experiments.
  • suspension produced by milling was also spray-dried and the resulting granules were compacted in a die press for green bodies for exchangeable cutting inserts in part of the examples.
  • green bodies for exchangeable cutting inserts were also subsequently sintered in a corresponding way in order to produce exchangeable cutting inserts as cutting machining tools 100 for metal-containing materials.
  • the content of the constituents of the cemented hard material is partly based on the total cemented hard material and partly only on the (Co+Ru) content. Furthermore, reference is often made to the content of the respective metals Cr, Mo, etc., in the above description.
  • the proportions are generally expressed in % by weight of the cemented hard material. The percentages by weight required to make up to 100% are in each case composed of tungsten carbide.
  • a cemented hard material having the following composition was produced as base material for a cutting machining tool for metal-containing materials.
  • the cemented hard material of example 1 has a Co content of 10% by weight of the cemented hard material, an Ru content of 1.5% by weight and an Mo content set by addition of 0.6% by weight of Mo 2 C powder, balance tungsten carbide (WC).
  • the production of the cemented hard material was carried out in a powder-metallurgical process. This results in: a (Co+Ru) content of 11.5% by weight of the cemented hard material, an Ru content of about 13% by weight of the (Co+Ru) content and an Mo content of about 0.56% by weight of the cemented hard material.
  • the hardness of the specimen was determined by Vickers hardness measurement (HV30) and the fracture toughness K lc (Shetty) was determined. To check the carbon balance and the resulting grain size, the magnetic coercivity field strength H C and the saturation magnetization 4 ⁇ were determined in a manner known per se. The grain size was also measured as “linear intercept length”, in accordance with the international standard ISO 4499-2:2008(E).
  • EBSD images of polished sections served as basis. The measurement methodology on such images is, for example, described in: K. P. Mingard et al., “Comparison of EBSD and conventional methods of grain size measurement of hard metals”, Int. Journal of Refractory Metals & Hard Materials 27 (2009) 213-223”. The values determined are summarized below in table 2. An electron micrograph of a polished section of the specimen according to example 1 in 10 000 ⁇ enlargement is shown in FIG. 3 .
  • a further cemented hard material was additionally with a higher Mo content, as follows: 10% by weight of Co, 1.5% by weight of Ru, 1.2% by weight of Mo 2 C.
  • the result is thus: a (Co+Ru) content of 11.5% by weight of the cemented hard material, an Ru content of about 13% by weight of the (Co+Ru) content and an Mo content of about 1.1% by weight of the cemented hard material.
  • the measured values determined can be seen from table 2.
  • a cemented hard material was produced as follows as comparative example 2: 10% by weight of Co, 1.5% by weight of Ru, balance WC.
  • a further cemented hard material was produced as base material for a cutting machining tool for metal-containing materials using the following starting materials: 8.7% by weight of Co, 1.3% by weight of Ru, 0.6% by weight of Cr 3 C 2 , 0.3% by weight of Mo 2 C.
  • the result is thus: a (Co+Ru) content of 10% by weight of the cemented hard material, an Ru content of about 13% by weight of the (Co+Ru) content, a Cr content of about 5.2% by weight of the (Co+Ru) content and an Mo content of about 0.28% by weight of the cemented hard material.
  • a cemented hard material was produced as base material for a cutting machining tool for metal-containing materials by means of an appropriate production process using the following starting materials: 5.5% by weight of Co, 0.8% by weight of Ru, 0.4% by weight of Cr 3 C 2 , 0.2% by weight of Mo 2 C.
  • the result is thus: a (Co+Ru) content of 6.3% by weight of the cemented hard material, an Ru content of about 13% by weight of the (Co+Ru) content, a Cr content of about 5.5% by weight of the (Co+Ru) content and an Mo content of about 0.19% by weight of the cemented hard material.
  • a significant increase in the hardness results from the significantly lower total binder content (Co+Ru), with, surprisingly, an only comparatively small decrease in the fracture toughness being observed.
  • a cemented hard material as base material for a cutting machining tool for metal-containing materials was produced as example 6 from the following starting materials: 13% by weight of Co, 1.9% by weight of Ru, 1.2% by weight of Cr 3 C 2 , 0.8% by weight of Mo 2 C.
  • the result is thus: a (Co+Ru) content of 14.9% by weight of the cemented hard material, an Ru content of about 13% by weight of the (Co+Ru) content, a Cr content of about 7% by weight of the (Co+Ru) content and an Mo content of about 0.75% by weight of the cemented hard material.
  • Table 1 summarizes the compositions of the respective examples and comparative examples in percent by weight of the cemented hard material, with the balance to 100% being formed in each case by WC.
  • Table 2 summarizes the determined measured values for the respective examples and comparative examples.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)
  • Powder Metallurgy (AREA)
  • Drilling Tools (AREA)
  • Milling, Broaching, Filing, Reaming, And Others (AREA)
US16/083,062 2016-03-11 2017-03-09 Machining tool Abandoned US20190024221A1 (en)

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ATGM53/2016 2016-03-11
ATGM53/2016U AT15139U1 (de) 2016-03-11 2016-03-11 Zerspanungswerkzeug
PCT/AT2017/000011 WO2017152197A1 (de) 2016-03-11 2017-03-09 Zerspanungswerkzeug

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EP (1) EP3426814B1 (zh)
JP (1) JP6811252B2 (zh)
CN (1) CN109072362A (zh)
AT (1) AT15139U1 (zh)
ES (1) ES2803398T3 (zh)
PL (1) PL3426814T3 (zh)
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AT15143U1 (de) * 2016-03-11 2017-01-15 Ceratizit Austria Gmbh Zerspanungswerkzeug
DE102018111101A1 (de) 2018-05-09 2019-11-14 Tribo Hartstoff Gmbh Werkstück aus einem Hartmetallwerkstoff und Verfahren zu dessen Herstellung
CN113957314A (zh) * 2021-09-17 2022-01-21 株洲索尔切削工具有限公司 一种硬质合金原料、切削工具硬质合金及其制备方法
CN117921005B (zh) * 2024-03-20 2024-06-11 赣州澳克泰工具技术有限公司 一种高温合金加工用刀片及其制备方法

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JP2019512602A (ja) 2019-05-16
AT15139U1 (de) 2017-01-15
EP3426814B1 (de) 2020-04-29
JP6811252B2 (ja) 2021-01-13
PL3426814T3 (pl) 2020-11-30
WO2017152197A1 (de) 2017-09-14
EP3426814A1 (de) 2019-01-16
CN109072362A (zh) 2018-12-21

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