• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a metallic strip which except Fe additionally 0.01% - 0.2% C, 12% - 17% Cr, 4% - 8% Ni, 0% - 3.5% Cu, 0% - 0, 5% Ti, 0% - 1.8% Si and 0% - 2% Mn. and comprising the steps of - providing a metallic strip material of predetermined thickness, width and length, - heating to a preheating temperature between 90 ° C and 150 ° C, - then uniform heating from the preheating temperature to a temperature between 5 ° C and 60 ° C below a predetermined target temperature within a time between 2 h - 4 h, with the target temperature between 450 ° C and 700 ° C, - then uniform heating to the target temperature within a time of 0.1 h - 1 h, - holding the Target temperature for a period of 0.5 h - - cooling to an afterglow temperature between 200 ° C and 400 ° C within a time between 0.5 h - 2.5 h, - subsequent cooling from the afterglow temperature to room temperature, was prepared.
    公开号:AT516464A1
    申请号:T50795/2014
    申请日:2014-11-03
    公开日:2016-05-15
    发明作者:
    申请人:Berndorf Band Gmbh；
    IPC主号:
    专利说明:

    The invention relates to metallic tapes, in particular endless tapes and their production methods.
    Metallic bands are used, for example, for belt presses or band saws. They comprise a metal sheet or a plurality of metal sheets, which are optionally welded or are welded together. In the event that endless belts are present, which is a preferred embodiment, the belts are transversely welded at their ends to form an endless belt. In the case where wide belts are needed, two or more belts are often welded together at their longitudinal edges to form a wide belt.
    In a belt press, in this case a double-belt press, an upper and lower endless belt are moved at the same speed, the endless belts running essentially parallel or at an angle to one another along an operating space. A small angle to each other may be required for compacting the material to be pressed but also due to a temperature-induced volume change.
    In the working space, a pressing operation takes place, wherein the two bands are pressed aufeinand and transfer this pressure on a workpiece passed between them during its movement.
    Disadvantage of these devices is that the conventional tapes have only a limited life, especially when heat is applied to the tapes during the pressing process, and must be replaced after a certain time.
    The object of the present invention was to overcome the disadvantages of the prior art and to provide metallic bands and a manufacturing method for these, by means of which a user is able to achieve a long drive running time.
    This object is achieved by metallic strips and a manufacturing method according to the claims.
    The production method of metallic strips according to the invention comprises the steps of: providing a metallic strip material of predetermined thickness, width and length, optionally connecting at least two metallic strip materials at the longitudinal edges to a wider strip material by means of welding (longitudinal welding), heating until a preheating temperature is reached between 90 ° C and 150 ° C, then uniformly heating from the preheating temperature to a temperature between 5 ° C and 60 ° C, in particular a temperature between 20 ° C and 40 ° C, below a predetermined target temperature within a time between 2h-4h where the target temperature is between 450 ° C and 700 ° C, then uniformly heating to the target temperature within a time of 0.1 h -1 h, maintaining the target temperature for a period of 0.5 h-2.5 h ( "Holding temperature"), - cooling to an afterglow temperature between 200 ° C and 400 ° C innerha between 0.5 h and 2.5 h, subsequent cooling from the afterglow temperature to room temperature, optionally connecting the ends of the heat-treated strip material to an endless strip by means of welding (transverse welding).
    Preferably, the preheating temperature is between 100 ° C and 140 ° C, in particular between 110 ° C and 130 ° C, with a temperature of 120 ° C (+/- 2 ° C) is particularly preferred. The time during which this happens does not necessarily have to be determined, but it has proved to be advantageous if the heating time is between 0.2 h and 1 h.
    The heating preferably takes place from the preheating temperature to a temperature below a predetermined target temperature within 2.5 h - 4 h, in particular within 3 h (+/- 10 min).
    Preferably, the heating takes place to the target temperature within a time of 0.5 h (+/- 5 min).
    Preferably, the target temperature is maintained within a time between 1h-2 h, in particular of 1.5 h (+/- 10 min).
    Preferably, the afterglow temperature is between 250 ° C and 350 ° C, especially at 300 ° C (+/- 10 ° C).
    Preferably, the cooling to an afterglow temperature within a time between 1 h - 2 h, in particular of 1.5 h (+/- 10 min).
    The target temperature depends on the strip material used and is preferably between 450 ° C. and 600 ° C. In a preferred embodiment, the target temperature is on the " descending branch " the heat treatment curve, ie in the region in which the function of the strength of the heat-treated Bandma¬terials in dependence on the holding temperature has a negative gradient.
    The heat treatment curve shows the function of the strength of the heat-treated strip material (Y-axis) as a function of the holding temperature (X-axis). This curve increases at a low holding temperature with increasing temperature, reaches a maximum and drops as the temperatures continue to rise as well as from (negative gradient).
    Preferably, the holding temperature is chosen so that it is higher than the temperature of the maximum of the curve, or so that it is chosen so that the function there has a negative derivative with respect to the temperature.
    This has the advantage that the finished strip, if it should experience high Temperatures in use, softer and thus ductile. The probability of a failure due to occurring brittle is thereby minimized.
    In the following, the% symbol indicates weight%.
    The metallic tapes of the present invention were made by the method of the invention and contain, besides Fe, the residual mass and unavoidable impurities 0.03% -0.2% C, 14% -18% Cr, 4% -6% Ni, 0% -3 , 5% Cu, 0% - 0.5% Ti, 0% - 0.8% Si and 0% -1% Mn.
    Preferably, the hardness [HV 10] of the base material (before the heat treatment) is between 300 and 400. The hardness is given here and below according to Vickers.
    The hardness [HV 10] of the heat-treated strip is preferably between 400 and 500.
    Preferably, the hardness [HV 10] of the heat-treated strip has increased from 100 to 200 over the base material.
    The tensile strength (Rm) of the base material (before the heat treatment) is preferably between 1000 N / mm 2 and 1450 N / mm 2, in particular between 1050 N / mm 2 and 1200 N / mm 2.
    Preferably, the tensile strength of the heat-treated strip is between 1300N / mm 2 and 1700N / mm 2, more preferably between 1450N / mm 2 and 1600N / mm 2.
    Preferably, the tensile strength of the heat-treated strip has increased from the base material between 350 N / mm 2 and 500 N / mm 2, in particular between 380 N / mm 2 and 450 N / mm 2.
    The yield strength 0.2% (Rp-0.2) of the base material (before the heat treatment) is preferably between 900 N / mm 2 and 1400 N / mm 2, in particular between 950 N / mm 2 and 1100 N / mm 2.
    Preferably, the yield strength is 0.2% of the heat-treated strip between 1300 N / mm 2 and 1700 N / mm 2, in particular between 1400 N / mm 2 and 1550 N / mm 2.
    Preferably, the yield strength 0.2% of the heat-treated strip has increased compared to the base material between 350 N / mm 2 and 500 N / mm 2, in particular between 380 N / mm 2 and 430 N / mm 2.
    The bending fatigue strength of the base material (before the heat treatment) is preferably between 400 N / mm 2 and 600 N / mm 2, in particular between 450 N / mm 2 and 550 N / mm 2.
    The bending fatigue strength of the heat-treated strip is preferably between 600 N / mm 2 and 800 N / mm 2, in particular between 630 N / mm 2 and 720 N / mm 2.
    Preferably, the bending fatigue strength of the heat-treated strip has increased compared to the base material between 100 N / mm 2 and 300 N / mm 2, in particular between 180 N / mm 2 and 220 N / mm 2.
    Preferably, the tensile strength (Rm) of the transverse weld of the base material (before the heat treatment) is between 800 N / mm 2 and 1200 N / mm 2, more preferably between 900 N / mm 2 and 1100 N / mm 2.
    Preferably, the tensile strength of the transverse weld of the heat-treated belt is between 1000 N / mm 2 and 1300 N / mm 2, in particular between 1180 N / mm 2 and 1250 N / mm 2.
    Preferably, the tensile strength of the transverse weld of the heat-treated strip to the transverse weld in the base material has increased between 20 N / mm 2 and 150 N / mm 2, in particular between 30 N / mm 2 and 110 N / mm 2.
    Preferably, the tensile strength of the longitudinal weld of the heat-treated tape is between 1200 N / mm 2 and 1700 N / mm 2, more preferably between 1310 N / mm 2 and 1550 N / mm 2.
    The hardness, tensile strength, yield strength and flexural repellency of the base material in the presence of the heat-treated material alone can be easily determined after determination of the chemical composition by the literature or by subsequent production of the base material without heat treatment.
    The metallic tapes of the present invention were made by the method of the invention and contain, besides Fe, the residual mass and unavoidable impurities 0.01% -0.2% C, 12% -17% Cr, 4% -8% Ni 0% -3.5 % Cu 0% - 0.5% Ti 0% -1.8% Si and 0% - 2% Μη.
    Optionally, the tapes contain 0.6% -1.4% Mn and 0.15% - 0.35% Si.
    Preferably, the hardness [HV 10] of the base material (before the heat treatment) is between 300 and 500. The hardness is given here and below according to Vickers.
    The hardness [HV 10] of the heat-treated strip is preferably between 400 and 600.
    Preferably, the hardness [HV 10] of the heat-treated strip has increased from 100 to 200 over the base material.
    The tensile strength (Rm) of the base material (before the heat treatment) is preferably between 1000 N / mm 2 and 1450 N / mm 2, in particular between 1200 N / mm 2 and 1420 N / mm 2.
    Preferably, the tensile strength of the heat-treated strip has increased from the base material between 350 N / mm 2 and 500 N / mm 2, in particular between 380 N / mm 2 and 450 N / mm 2.
    The yield strength 0.2% (Rp-0.2) of the base material (before the heat treatment) is preferably between 900 N / mm 2 and 1400 N / mm 2, in particular between 950 N / mm 2 and 1350 N / mm 2.
    Preferably, the yield strength 0.2% of the heat-treated strip has increased compared to the base material between 350 N / mm 2 and 500 N / mm 2, in particular between 380 N / mm 2 and 430 N / mm 2.
    The bending fatigue strength of the base material (before the heat treatment) is preferably between 400 N / mm 2 and 600 N / mm 2, in particular between 450 N / mm 2 and 550 N / mm 2.
    Preferably, the bending fatigue strength of the heat-treated strip has increased compared with the base material between 100 N / mm 2 and 300 N / mm 2, in particular between 180 N / mm 2 and 220 N / mm 2.
    Preferably, the tensile strength (Rm) of the transverse weld of the base material (before the heat treatment) is between 900 N / mm 2 and 1200 N / mm 2, more preferably between 950 N / mm 2 and 1150 N / mm 2.
    Preferably, the tensile strength of the transverse weld of the heat-treated strip to the transverse weld in the base material has increased between 20 N / mm 2 and 150 N / mm 2, in particular between 30 N / mm 2 and 110 N / mm 2.
    The hardness, tensile strength, yield strength and flexural repellency of the base material in the presence of the heat-treated material alone can be easily determined after determination of the chemical composition by the literature or by subsequent production of the base material without heat treatment.
    The heat treatment of the strips is preferably carried out in an oven. The strip is wound up during heat treatment preferably into a roll (coil). During the winding of the roll, an additional metal foil, for example a copper foil, can be rolled up together with the strip material. This has the advantage that the layers of a roll of strip material do not scratch each other.
    According to a preferred embodiment, the bands have a length between 20 m and 190 m, preferably between 40 m and 170 m. In the case of endless belts, this means the length of one revolution over the entire belt. This represents an advantageous belt length for wood and conveyor belts.
    In the event that the finished tapes are in the form of endless belts, in a preferred embodiment, the heat treatment takes place before welding to the endless belt.
    In the case where two or more strips are to be longitudinally welded into a wide strip, in a preferred embodiment the heat treatment preferably takes place after welding. According to another preferred embodiment, the heat treatment takes place before the welding.
    The following are examples of preferred embodiments of erfindungs¬gemäßen tapes are shown.
    example 1
    A metal band material consists of max. 0.09 C, 15% Cr, 7% Ni, 0.7% Cu, 0.4% Ti and balance Fe. Its tensile strength is 1150 N / mm2, and its hardness [HV10] 360.
    After the heat treatment according to the process of the invention with a holding temperature of 540 ° C - 570 ° C, its tensile strength is 1550 N / mm 2, and its hardness [HV 10] 480.
    Example 2
    A metal strip material consists of 0.03 C, 14.5% Cr, 4.5% Ni, 3.3% Cu and Residue Fe. Its tensile strength is 1050 N / mm2, and its hardness [HV10] 330.
    After the heat treatment according to the process of the invention with a holding temperature of 470 ° C - 520 ° C, its tensile strength is 1450 N / mm 2, and its hardness [HV 10] 460.
    It can be clearly seen in the examples that the heat treatment increases the tensile strength and the hardness of the materials. This increase takes place by the precipitation of the respective precipitation-hardening element from the thermodynamically dissolved state. The precipitated elements form phases which hinder the displacements and thereby increase the hardness and strength.
    In Examples 1 and 2, in the heat treatment, an element is usually precipitated from the crystal composite without leaving the strip material (precipitation-hardening element). The particular material is thus chemically present in the material, but is no longer part of the basic structure. The materials listed in Examples 1 and 2 are both martensitic materials. In Example 1, Ti is the precipitation-hardening alloying element, in Example 2, Cu is the precipitation-hardening alloying element.
    The embodiments describe possible embodiments, wherein at this point it should be noted that the invention is not limited to the specifically illustrated embodiments, but rather also various combinations of the individual embodiments with each other are possible and this variation possibility due to the teaching of technical action by gegen¬ständliche invention in Can the person working in this technical field expert lies.
    Furthermore, individual features or combinations of features from the different embodiments shown and described can also represent solutions that are inventive, inventive or inventive.
    The problem underlying the independent inventive solutions can be taken from the description. All statements on ranges of values in objective description are to be understood as including any and all sub-ranges thereof, eg the indication 0% to 1% is to be understood as meaning that all sub-ranges, starting from the lower limit 0% (not included) and the upper limit is 1%, ie all subregions begin with a lower limit of 0% or greater and end at an upper limit of 1% or less, e.g. 0% to 0.7%, or 0.1% to 1%, or 0.5% to 0.9%.
    Above all, the individual embodiments can form the subject of independent solutions according to the invention.
    权利要求:
    Claims (9)
    [1]
    Claims 1. A metallic strip manufacturing method comprising the steps of: providing a metallic strip material of predetermined thickness, width and length, heating to a preheating temperature between 90 ° C and 150 ° C, then uniformly heating from the preheating temperature to a temperature between 5 ° C and 60 ° C below a predetermined target temperature within a time of between 2h-4h, the target temperature being between 450 ° C and 700 ° C, then uniformly heating to the target temperature within a time of 0.1h-1h, holding the Target temperature for a period of 0.5 h - 2.5 h ("holding temperature"), - cooling to an afterglow temperature between 200 ° C and 400 ° C within a time between 0.5 h - 2.5 h, - subsequent cooling of the afterglow temperature to room temperature.
    [2]
    2. The method according to claim 1, characterized in that at least two metallic strip materials at the longitudinal edges to a wider Band¬ material by welding (longitudinal welding) are joined together, in particular before the heat treatment and / or that the ends of the heat-treated strip material to form an endless belt be connected by welding ("transverse welding"), in particular after the heat treatment.
    [3]
    A method according to any one of the preceding claims, characterized in that when heated from the preheating temperature to a temperature between 20 ° C and 40 ° C below the target temperature.
    [4]
    5. The method according to any one of the preceding claims, characterized in that the target temperature is between 450 ° C and 600 ° C and / or that the target temperature is on the descending branch of the heat treatment curve, in the region in which the function of the strength of the heat-treated strip material in Dependent on the holding temperature has a negative gradient.
    [5]
    6. The method according to any one of the preceding claims, characterized in that the heat treatment of the strips is carried out in an oven, wherein the strip during heat treatment is preferably wound into a roll (coil).
    [6]
    A metallic strip produced by a method according to any one of the preceding claims, characterized in that it further comprises Fe, which constitutes the residual mass, and unavoidable impurities, in addition to 0.01% - 0.2% C, 12% -17% Cr, 4 % - 8% Ni, 0% - 3.5% Cu, 0% - 0.5% Ti, 0% -1.8% Si and 0% -2% Mn.
    [7]
    8. Metallic band according to claim 6, characterized in that the band has a length between 20 m and 190 m, preferably between 40 m and 170 m.
    [8]
    9. Metallic strip according to one of claims 7 or 8, characterized in that the base material (before the heat treatment) a hardness [HV 10] between 300 and 500 and / or a tensile strength (Rm) between 1000N / mm2 and 1450 N / mm2 and or a yield strength of 0.2% (Rp-0.2) between 900N / mm2 and 1400N / mm2 and / or a bending fatigue strength between 400N / mm2 and 600N / mm2 and / or a tensile strength (Rm) of the transverse weld between 800N / mm2 and 1200 N / mm2, and / or has a tensile strength of the longitudinal weld between 1200 N / mm2 and 1700 N / mm2.
    [9]
    10. Metallic strip according to one of claims 7 to 9, characterized ge characterized in that with respect to the heat-treated strip against the base material, the hardness [HV 10] between 100 and 200 and / or the tensile strength between 350 N / mm2 and 500 N / mm2 and / or the yield strength 0.2% between 350 N / mm2 and 500 N / mm2 and / or the bending fatigue strength between 100 N / mm2 and 300 N / mm2 and / or the tensile strength of the transverse weld between 20 N / mm2 and 150 N. / mm2 has increased.
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    引用文献:
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    US20050126661A1|2001-12-11|2005-06-16|Gustaf Zetterholm|Precipitation hardenable austenitic steel|
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    WO2013182621A1|2012-06-05|2013-12-12|Thyssenkrupp Steel Europe Ag|Steel, sheet steel product and process for producing a sheet steel product|
    JPH0148339B2|1984-07-06|1989-10-18|Nisshin Steel Co Ltd|
    JPH08155678A|1994-12-06|1996-06-18|Daido Steel Co Ltd|Manufacture of welding wire|
    JP2002173740A|2000-12-04|2002-06-21|Nisshin Steel Co Ltd|Precipitation hardening martensitic stainless steel strip having excellent shape flatness and its production method|
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    CN102312157B|2011-09-21|2013-08-14|首钢总公司|Cold-rolled TRIP steel at over 1000 MPa and preparation method thereof|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50795/2014A|AT516464B1|2014-11-03|2014-11-03|Metallic strips and their manufacturing processes|ATA50795/2014A| AT516464B1|2014-11-03|2014-11-03|Metallic strips and their manufacturing processes|
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