WO2013104789A1 - Lame et son procédé de fabrication - Google Patents

Lame et son procédé de fabrication Download PDF

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Publication number
WO2013104789A1
WO2013104789A1 PCT/EP2013/050572 EP2013050572W WO2013104789A1 WO 2013104789 A1 WO2013104789 A1 WO 2013104789A1 EP 2013050572 W EP2013050572 W EP 2013050572W WO 2013104789 A1 WO2013104789 A1 WO 2013104789A1
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WO
WIPO (PCT)
Prior art keywords
knife
steel
cutting
edge
layer
Prior art date
Application number
PCT/EP2013/050572
Other languages
German (de)
English (en)
Inventor
Christoph Wolff
Original Assignee
Heusch Gmbh & Co. Kg
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Heusch Gmbh & Co. Kg filed Critical Heusch Gmbh & Co. Kg
Priority to CN201380011495.1A priority Critical patent/CN104145031B/zh
Priority to EP13700864.5A priority patent/EP2732056B9/fr
Publication of WO2013104789A1 publication Critical patent/WO2013104789A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/06—Surface hardening
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/25—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member
    • B26D1/43—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about another axis, e.g. mounted on the surface of a cone or curved body
    • B26D1/435—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about another axis, e.g. mounted on the surface of a cone or curved body for thin material, e.g. for sheets, strips or the like
    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
    • C14B17/00—Details of apparatus or machines for manufacturing or treating skins, hides, leather, or furs
    • C14B17/02—Blading cylinders or other working cylinders, e.g. slicking or scraping cylinders
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/18—Hardening; Quenching with or without subsequent tempering
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/002—Heat treatment of ferrous alloys containing Cr
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/18—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for knives, scythes, scissors, or like hand cutting tools
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
    • D06C13/00—Shearing, clipping or cropping surfaces of textile fabrics; Pile cutting; Trimming seamed edges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/0006—Cutting members therefor
    • B26D2001/002—Materials or surface treatments therefor, e.g. composite materials
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/005—Ferrite
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/008—Martensite

Definitions

  • the invention relates to a helical knife, wherein the blade is made of hardenable steel and has a cutting leg having both at a lower end a foot surface and at an upper end a cutting surface, wherein the cutting surface along a front edge having a cutting edge.
  • the present invention relates to a method for producing such a helical knife.
  • hardenable steels in the context of the present application ferritic
  • hardening is an increase in the hardness of a steel by means of a heat treatment (heating with subsequent hardening)
  • the hardness of a steel for example in the units HRC (Rockwell) or HV (Vickers) can be specified. Hardening therefore includes both the classic “hardening” (producing a hardness of 50 HRC or> 510 HV) and the classical “tempering” (hardness is increased but 50 HRC or 510 HV are not achieved), since in both processes the hardness of the respective treated steel is increased by means of a heat treatment.
  • Knives of the type described above are particularly in the leather and the
  • the knives of the trimming unit come into particular contact with the previously used chemicals during this debarking process.
  • the aggressiveness of the chemicals corrodes the steel of the knives particularly quickly, especially when the trimming unit is not permanently in use
  • the knives are subject to constant abrasion, so that forming rust, which is very soft, is abraded directly.
  • the amounts of oxidized material (rust) that reach the dermis are so low that However, once the Ent trainsaggregat stands still longer time (weekend, holidays,
  • the steel according to DE 695 10 719 T1 is disadvantageous insofar as it typically contains high amounts of nickel, which in principle has health-damaging potential. Since in the textile and / or leather processing the knives used there must be reground relatively frequently, a steel with a high nickel content is undesirable for reasons of occupational safety alone.
  • the object of the present invention is based on the above
  • Producing produce which has both corrosion-resistant properties and sufficient hardness and rigidity, so that it is particularly suitable for use in leather processing, even with high demands on the quality of cut. solution
  • the underlying object is achieved from a process engineering point of view, starting from a method of the type described above according to the invention that the hardenable steel of the knife is also a stainless steel and an edge layer of the knife is enriched with carbon and then cured.
  • the remainder of the blade is hardened simultaneously with the hardening of the edge layer of the blade, that is to say its core region.
  • tempered hardness of ⁇ 50 HRC.
  • the "hardening” according to claim 1 an increase in the hardness of at least the edge layer instead (see also introductory definition of “hardenable steel”).
  • the group of ferritic high-alloyed stainless (chromium) steels is particularly relevant, although the present application is not limited to such steels, provided that said properties "hardenable” and “stainless” are met. After hardening, these steels are referred to as martensitic high-alloyed stainless (chromium) steels, with the martensite of the hardened steel forming during the hardening process from the ferrite of the base steel.
  • the end product can also be appropriately called stainless martensitic chromium steel, which is curable as such in the context of this application, that is curable and / or heat-treatable.
  • the carbon enrichment step significantly increases the carbon content of the edge layer of the blade relative to its core region.
  • This process of "carburizing" an already hardenable steel, ie a ferritic steel, which already has a minimum content of alloying elements necessary for the hardening is atypical.
  • the enrichment of a carbon steel is usually only carried out if the respective steel is curable at all
  • carburizing is normally applied to non-hardenable (ferritic) steels, so-called case hardened steels, which are therefore considered to be non-ferrous
  • Separate enrichment with carbon as non-curable in the context of this application this is not justified by the fact that it is an austenitic steel in a case-hardening steel - case-hardened steels are basically ferritic -, but the lack of
  • the inventive method includes the step of curing at least the edge layer of the knife, but advantageously the entire knife. Due to the changing carbon content of the knife after its carburisation (only the
  • Edge layer is carburized
  • the hardness of the steel varies over the cross section of the knife, which is increased in the boundary layer opposite a core region.
  • the hardness of the surface layer can be increased considerably and particularly easily exceed the extent of at least 630 HV.
  • a hardness of at least 670 HV, more preferably at least 720 HV should be exceeded.
  • In the core area of the knife is
  • the hardened core area of the knife is classified as (highly) tempered according to the classical definition (see introductory definition).
  • a known manner in the course of carburizing outer edge oxidation which typically has a thickness of about 20 ⁇ ⁇ 10 ⁇ not for the assessment of the hardness of the invention Boundary layer is taken into account.
  • a correct hardness determination is particularly easy by removing the edge oxidation layer on the hardened blade by means of grinding-polishing processes and then with a minimum test load, the metallic bare surface of the knife is checked. The method described above is particularly advantageous when the
  • Edge layer circumferentially on the knife enriched with carbon and then hardened.
  • a "peripheral edge layer” is understood as meaning that the edge layer completely encompasses the respectively treated knife, ie, is not merely produced on a specific side or flank of the knife.
  • the advantage of a peripherally hard edge layer lies in the stabilization effect of that edge layer Although this side itself does not interfere with the material to be processed and therefore does not in principle make any greater demands on its hardness, it is particularly advantageous due to the positive stabilizing effect of a hard layer that stiffens the entire knife Advantage.
  • the base material is a steel having the properties of a martensitic stainless steel of type X20Cr13.
  • Steels of this type are curable and stainless and are particularly well available as standardized steel.
  • As base material such a steel is not yet available as martensitic but as ferritic steel.
  • the formation of the martensite occurs only in the course of hardening of the steel. If a steel of the aforementioned type X20CM 3 is used as the basis for the method according to the invention, the surface layer of the blade is changed in its structure due to the carburizing process step, since carbon is incorporated. Accordingly, the term X20CM 3 no longer applies after carburizing at least to the surface layer.
  • the underlying object is device-based starting from a knife of the type described above according to the invention solved in that the curable steel of the knife is a stainless steel and the knife has a carbon enriched and hardened surface layer.
  • the curable steel of the knife is a stainless steel and the knife has a carbon enriched and hardened surface layer.
  • the core portion thereof hardened, wherein the hardness of the The core range is typically not raised above 510 HV and is therefore considered to be remunerated according to the classical definition (see introductory definition).
  • such a knife can be hardened particularly well, that is to a particularly high degree, and thus both achieve a high hardness in the region of the edge layer (typically of at least 630 HV) and essentially retain its stainless properties and therefore only corrode to a relatively small extent.
  • rust rust very slight signs of corrosion occur
  • the corrosion is already far advanced in conventional, non-corrosion-resistant knives and the shape of real "rust craters "has assumed great depth.
  • such a knife is particularly advantageous in which a hardness of the surface layer is at least 630 HV, preferably at least 670 HV, more preferably at least 720 HV. Knives that have hardnesses in this area are particularly suitable for textile and leather processing in terms of their susceptibility to abrasive wear, since they are able to withstand the respective textile or leather well.
  • the knife according to the invention should also be designed so that the carburized edge layer has a thickness between 0.001 mm and 0.30 mm, preferably between 0.05 mm and 0.20 mm.
  • a layer thickness is sufficient to guarantee a long service life of the knife, since a removal of this layer thickness in the course of the operation of the associated cutting unit takes some time.
  • the small layer thickness offers the advantage that an even greater part of the knife remains in the core with a low carbon content in relation to the edge layer and the entire knife retains a high degree of toughness despite the particularly hard edge layer, which reduces the risk of breakage.
  • the carburizing time that is, the time that the knife steel has to be carburized, can be kept short, resulting in a larger one
  • the above-mentioned edge oxidation layer which is formed in the course of the carburizing process, is not included.
  • the knife should preferably have a carbon content of more than 0.25%, preferably more than 0.4%, more preferably at least 0.6%. In this way, the edge layer is particularly good curable, so that they can withstand the abrasive stress of the cutting operation by means of curing for a particularly long time.
  • the curable steel used for the knife should be before carburizing the
  • Randhus have a carbon content between 0, 10% and 0.60%, preferably between 0, 15% and 0.50%.
  • Such steels are characterized by a particularly high toughness with good hardenability, with the latter being highly dependent on the proportions of the other alloying elements.
  • the type X20Cr 13 from the group of stainless martensitic chromium steels which by definition has about 0.2% + 0.05% carbon and about 13% ⁇ 1.0% chromium and is curable, may also be mentioned here as a knife steel .
  • the high chromium content gives this steel its corrosion resistance. At the same time it serves as a strong carbide former, which makes the steel, despite the relatively small
  • Carbon content of 0.2% is curable.
  • a higher carbon content of 0.4% may be expedient, whereby advantageously the steel from which the knife is made should have a chromium content of at least 12.5.
  • the stainless or corrosion-resistant property of the respective steel is favored or ensured. This applies in particular to the carburized edge layer of the knife, which still retains a high corrosion resistance despite such carburizing despite being carburized to, for example, 1.0% carbon.
  • a knife whose steel is not alloyed with nickel, in particular a nickel content of at most 1, 0%, preferably at most 0.5%, more preferably at most 0.25%.
  • the low nickel content is particularly advantageous from the point of view of industrial safety, since no harmful nickel is released during grinding operations which have to take place at regular intervals for the purpose of sharpening the knives.
  • a knife whose inner core region is hardened.
  • Such a hardened core region is particularly advantageous for the applicability of the knife, since the knife thereby obtains a particularly high rigidity.
  • the hardness of the knife in the core region is then advantageously in a range of at least 300 HV, preferably at least 350 HV, more preferably at least 400 HV. Increased stiffness of the knife is particularly advantageous in terms of higher resistance under the action of shear forces, since the deformations of the knife for a
  • Such a knife is particularly preferable in which the carbon-enriched and hardened surface layer circulates around the blade.
  • the advantages of a circumferentially hardened surface layer are already explained above.
  • Fig. 1 A micrograph of a knife according to the invention.
  • Fig. 2 A Ent trainszylinder with a plurality of the knife according to the invention.
  • a knife 1 according to the invention which is shown in FIG. 1, has an edge layer 2 and an edge oxidation layer 3.
  • the boundary layer 2 and the edge oxidation layer 3 merge into one another along a transition region 4.
  • the edge layer 2 is particularly clearly visible in FIG. 1 by a light representation and the edge oxidation layer 3 by a dark representation.
  • the edge oxidation layer 3 is a product of carburizing the blade 1. It typically has only a very low hardness.
  • the knife 1 is made of a martensitic chromium steel of the type X20CM 3 and accordingly has a carbon content of about 0.2% ⁇ 0.05% and a chromium content of about 13% ⁇ 1, 0%. This steel is hardenable and at the same time corrosion resistant. At the Example of knife 1 meet the specified values on a not shown
  • edge layer 2 of the blade 1 is enriched with carbon and therefore has a carbon content of about 1, 0%.
  • a thickness of the edge layer 2 of the knife 1 is approximately 0.15 mm. The enrichment of the boundary layer 2 with carbon takes place in the course of a so-called "carburizing".
  • edge layer 2 of the blade 1 causes the same in this area as a result of quenching a particularly high hardness developed (the in oxidation become inactive edge oxidation layer 3 remains unconsidered), the steel inherent corrosion resistance, although reduced, but in an extensive Dimensions are retained.
  • the knife 1 is particularly good for use in the
  • FIG. 2 a defrosting cylinder 5, which is used in the course of leather processing, is shown.
  • This has a plurality of knives 1 according to the invention, which are arranged on a circumferential surface 6 of a cylinder body 7 of the Entéeszylinders 5.
  • the Ent trainszylinder 5 rotates in operation about a longitudinal axis 8, wherein a cutting edge 9 of the knife 1 is brought into engagement with a material to be machined and this cuts as a result.
  • the knives 1 each have one
  • Cutting blade 10 which has at a lower end a foot surface 1 1, with which the blades 1 are each arranged on the lateral surface 6 of the cylinder body 7. Furthermore, the knives 1 at an upper end of the cutting edge 10 a
  • the blades 1 are fixed by means of caulking with copper 14 in grooves of the cylinder body 7. LIST OF REFERENCE NUMBERS

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Thermal Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Textile Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Knives (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

La présente invention concerne un procédé de production d'une lame hélicoïdale (1), réalisée en acier trempable et présentant une partie coupante (10) qui comporte une surface de base (11) à une extrémité inférieure et une surface coupante (12) à une extrémité supérieure, ladite surface coupante (12) présentant une arête coupante (9) le long d'un bord avant (13). La présente invention concerne également une lame hélicoïdale (1) réalisée en acier trempable et présentant une partie coupante (10) qui comporte une surface de base (11) à une extrémité inférieure et une surface coupante (12) à une extrémité supérieure, ladite surface coupante (12) présentant une arête coupante (9) le long d'un bord avant (13). L'objectif de l'invention est de mettre au point une lame et un procédé pour sa production, ladite lame présentant des propriétés inoxydables et une dureté suffisante pour être appropriée en particulier à une utilisation dans le traitement du cuir. A cet effet, l'acier trempable choisi pour la lame (1) est un acier inoxydable et une couche de bord (2) de la lame (1) est enrichie en carbone puis trempée de sorte que la lame (1) présente une couche de bord (2) enrichie en carbone et trempée.
PCT/EP2013/050572 2012-01-12 2013-01-14 Lame et son procédé de fabrication WO2013104789A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201380011495.1A CN104145031B (zh) 2012-01-12 2013-01-14 刀片及其制造方法
EP13700864.5A EP2732056B9 (fr) 2012-01-12 2013-01-14 Lame et son procédé de fabrication

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012200425.4 2012-01-12
DE102012200425A DE102012200425A1 (de) 2012-01-12 2012-01-12 Messer sowie Verfahren zu dessen Herstellung

Publications (1)

Publication Number Publication Date
WO2013104789A1 true WO2013104789A1 (fr) 2013-07-18

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ID=47598800

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Application Number Title Priority Date Filing Date
PCT/EP2013/050572 WO2013104789A1 (fr) 2012-01-12 2013-01-14 Lame et son procédé de fabrication

Country Status (4)

Country Link
EP (1) EP2732056B9 (fr)
CN (1) CN104145031B (fr)
DE (1) DE102012200425A1 (fr)
WO (1) WO2013104789A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105400913A (zh) * 2015-12-01 2016-03-16 天津鑫泰尔毛皮机械设备制造有限公司 一种裘皮精剪装置
CN107662084A (zh) * 2016-07-28 2018-02-06 杭州巨星工具有限公司 切割部件及其制造方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017104706A1 (de) * 2017-03-07 2018-09-13 Heusch Gmbh & Co. Kg Verfahren zur Montage eines Messers an einem Zylinderkörper sowie Schneidvorrichtung zur Bearbeitung von Tierhäuten

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DE7403463U (de) 1974-02-01 1976-02-26 Fa. Severin Heusch, 5100 Aachen Piralschermesser
JPS5798674A (en) * 1980-12-11 1982-06-18 Nisshin Steel Co Ltd Production of stainless steel material for cutlery
JPS57149127A (en) * 1981-03-10 1982-09-14 Nisshin Steel Co Ltd Manufacture of high carbon stainless steel tool
SU1152966A1 (ru) * 1982-01-04 1985-04-30 Орловский научно-исследовательский институт легкого машиностроения Способ изготовлени спиральных ножей строгальных кожевенных машин
JPH01230722A (ja) * 1988-03-08 1989-09-14 Nisshin Steel Co Ltd 刃物用ステンレス鋼材の製造方法
EP0555694A2 (fr) * 1992-02-12 1993-08-18 Esm Ennepetaler Schneid- Und Mähtechnik Gmbh & Co. Kg Procédé de fabrication d'une lame en acier pour les domaines agricole et forestier
DE69510719T2 (de) 1994-04-18 1999-12-09 Daido Hoxan Inc Verfahren zur Aufkohlung von austenitischem Metall

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JP4186471B2 (ja) * 2002-02-06 2008-11-26 住友金属工業株式会社 マルテンサイト系ステンレス鋼およびその製造方法

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Publication number Priority date Publication date Assignee Title
DE7403463U (de) 1974-02-01 1976-02-26 Fa. Severin Heusch, 5100 Aachen Piralschermesser
JPS5798674A (en) * 1980-12-11 1982-06-18 Nisshin Steel Co Ltd Production of stainless steel material for cutlery
JPS57149127A (en) * 1981-03-10 1982-09-14 Nisshin Steel Co Ltd Manufacture of high carbon stainless steel tool
SU1152966A1 (ru) * 1982-01-04 1985-04-30 Орловский научно-исследовательский институт легкого машиностроения Способ изготовлени спиральных ножей строгальных кожевенных машин
JPH01230722A (ja) * 1988-03-08 1989-09-14 Nisshin Steel Co Ltd 刃物用ステンレス鋼材の製造方法
EP0555694A2 (fr) * 1992-02-12 1993-08-18 Esm Ennepetaler Schneid- Und Mähtechnik Gmbh & Co. Kg Procédé de fabrication d'une lame en acier pour les domaines agricole et forestier
DE69510719T2 (de) 1994-04-18 1999-12-09 Daido Hoxan Inc Verfahren zur Aufkohlung von austenitischem Metall

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DATABASE WPI Section Ch Week 198545, Derwent World Patents Index; Class D, Page 18, AN 1985-281662, XP002695965 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105400913A (zh) * 2015-12-01 2016-03-16 天津鑫泰尔毛皮机械设备制造有限公司 一种裘皮精剪装置
CN107662084A (zh) * 2016-07-28 2018-02-06 杭州巨星工具有限公司 切割部件及其制造方法

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Publication number Publication date
EP2732056A1 (fr) 2014-05-21
EP2732056B1 (fr) 2014-12-24
CN104145031B (zh) 2016-08-17
DE102012200425A1 (de) 2013-07-18
CN104145031A (zh) 2014-11-12
EP2732056B9 (fr) 2015-07-22

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