WO2018176905A1 - 一种高硬度精密蚀刻刀模 - Google Patents

一种高硬度精密蚀刻刀模 Download PDF

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WO2018176905A1
WO2018176905A1 PCT/CN2017/115356 CN2017115356W WO2018176905A1 WO 2018176905 A1 WO2018176905 A1 WO 2018176905A1 CN 2017115356 W CN2017115356 W CN 2017115356W WO 2018176905 A1 WO2018176905 A1 WO 2018176905A1
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die
minutes
cooled
heat treatment
room temperature
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PCT/CN2017/115356
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French (fr)
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刘浩
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刘浩
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/44—Cutters therefor; Dies therefor
    • 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
    • C21D1/78—Combined heat-treatments not provided for above
    • 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
    • C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
    • 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
    • C21D6/005—Heat treatment of ferrous alloys containing Mn
    • 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
    • C21D6/008—Heat treatment of ferrous alloys containing Si
    • 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
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/44—Cutters therefor; Dies therefor
    • B26F2001/4436—Materials or surface treatments therefore

Definitions

  • the present invention relates to a mold, and more particularly to a high-hardness precision etching die which is excellent in toughness, machinability and wear resistance.
  • the size of the etching die is very high, generally can be maintained at ⁇ 0.03mm, and the level of the knife edge is kept at ⁇ 0.01.
  • the etched die is mainly used for cutting the product label in the die-cutting industry. It is used for the module on the liquid crystal display, the cutting of the touch screen, and the etching of the die shows its own superior effect.
  • the preparation of the etching die generally includes the following steps:
  • Corrosion department receives the film and work order, confirms the thickness of the plate, and after the material type of the knife is high, it is put on the film and exposed by the film. Finally, after the syrup treatment, the prototype of the mold is displayed. If the exposure work is not completed, the graphic needs to be After the repair, it can enter the corrosion machine for corrosion. After the requirements are met, it can be taken out. After the chemical deposit is removed, it can be sent to the next department. The corrosion department is a roughing department for the mold.
  • the engraving department receives the die after the roughing, and after the visual inspection is confirmed, it is put into the machine for processing. Due to the difference in the size and difficulty of the die, the length of the production time is different. Generally, the die is 1-4 hours, and the special one takes 8 hours or even 24 hours to complete the CNC machining. After the completion, it is determined that there is no problem before it can be sent to QC.
  • QC is responsible for checking the die size, the die cutter blade, etc., and is responsible for making the inspection report, and then sending it to the heat treatment.
  • the material does not contain self-adhesive for general heat treatment.
  • the self-adhesive material is also treated with Teflon.
  • the dragon can make the die-cut product not stick to the die, but due to the special process, the Teflon does not affect the sharpness of the die. After the supervisor has stamped the inspection report, the cutter can be packaged and shipped.
  • Mirror OR coating treatment This treatment can remove the tiny lines on the side of the knife blade and achieve the mirror effect. It can effectively solve the problem of burr dust when punching the knife, making the edge of the product smooth and smooth, suitable for the requirements of punching. High product. Generally, the die is often coated to prevent rust.
  • the technical problem to be solved by the present invention is to provide a high-hardness precision etching die which can effectively increase toughness, machinability, wear resistance and hardness.
  • a high-hardness precision etching die having a weight percentage component of C: 0.07 to 0.09%, Si: 0.33 to 0.35%, Mn: 1.5 to 1.7%, P: 0.01 to 0.03%, and S: 0.001 to 0.003%.
  • Nb 0.015 to 0.017%, Ti: 0.023 to 0.025%, Ni: 0.3 to 0.5%, Cr: 0.7 to 0.9%, Cu: 0.2 to 0.4%, Al: 0.06 to 0.08%, and the balance being Fe and impurities.
  • the heat treatment process of the high hardness precision etching die is performed after the CNC engraving process, and the heat treatment process comprises the following steps:
  • the etched die is heated to 750-770 ° C, held for 15-17 minutes, then air cooled for 10-13 minutes, then the die is heated to 650-670 ° C, then rapidly cooled to 450-470 ° C by compressed air, and finally air cooled To room temperature;
  • the invention has the beneficial effects that the invention improves the cutting performance of the etching die by the content of Ni and Cu; improves the hardness of the etching die by the content of Nb, Ti, Cr and Cu, and the hardness can reach HRC47-51 after testing.
  • the toughness is improved by the content of Nb, Ti, Ni, Cr and Al, and the toughness can be up to 80-85 J/cm 2 ; in addition, since the preparation of the etching die requires an etching process, in the design of its composition It is not possible to improve the corrosion resistance of the components by the control of the composition.
  • the die-cutting materials mostly contain glues, which are required to have acid and corrosion resistance, and can only be improved by subsequent heat treatment.
  • the invention has excellent acid and corrosion resistance performance by the heat treatment process, and obtains an unexpected technical effect.
  • the HIC performance of the etching die of the invention is carried out according to the NACE TM0248-A experimental solution standard, (CTR) ⁇ 5%, (CSR) ⁇ 2%, (CLR) ⁇ 15%; SSC performance is four-point bending according to ASTM G39 standard In the test, a 4-point bending test was carried out in the A solution of NACE TM0177. The test time was 720 hours, and the sample loading stress was 80% of the actual yield strength. After the test, it was observed at 10 times magnification, and there was no crack in the thickness direction of the test piece.
  • This embodiment is a high-hardness precision etching die with a weight percentage component of C: 0.07%, Si: 0.33%, Mn: 1.5%, P: 0.01%, S: 0.001%, Nb: 0.015%, Ti. : 0.023%, Ni: 0.3%, Cr: 0.7%, Cu: 0.2%, Al: 0.06%, and the balance being Fe and impurities.
  • the hardness of this example can reach HRC47, the toughness can reach 80J/cm 2 ; the HIC performance of the etching die, the experiment is carried out according to the NACE TM0248-A experimental solution standard, (CTR) ⁇ 5%, (CSR) ⁇ 2% (CLR) ⁇ 15%; SSC performance according to ASTM G39 standard four-point bending test, 4-point bending test in N solution of NACE TM0177, test time 720 hours, the sample loading stress is 80% of the actual yield strength, After the test, it was observed at 10 times magnification, and there was no crack in the thickness direction of the sample piece.
  • CTR NACE TM0248-A experimental solution standard
  • CSR CSR
  • CLR CLR
  • This embodiment is a high hardness precision etching die, and its weight percentage component is: C: 0.08%, Si: 0.34%, Mn: 1.6%, P: 0.02%, S: 0.002%, Nb: 0.016%, Ti : 0.024%, Ni: 0.4%, Cr: 0.8%, Cu: 0.3%, Al: 0.07%, and the balance being Fe and impurities.
  • the hardness of this example can reach HRC49, the toughness can reach 82J/cm 2 ; the HIC performance of the etching die, the experiment is carried out according to the NACE TM0248-A experimental solution standard, (CTR) ⁇ 5%, (CSR) ⁇ 2% (CLR) ⁇ 15%; SSC performance according to ASTM G39 standard four-point bending test, 4-point bending test in N solution of NACE TM0177, test time 720 hours, the sample loading stress is 80% of the actual yield strength, After the test, it was observed at 10 times magnification, and there was no crack in the thickness direction of the sample piece.
  • CTR NACE TM0248-A experimental solution standard
  • CSR CSR
  • CLR CLR
  • This embodiment is a high hardness precision etching die with a weight percentage component of C: 0.09%, Si: 0.35%, Mn: 1.7%, P: 0.03%, S: 0.003%, Nb: 0.017%, Ti. : 0.025%, Ni: 0.5%, Cr: 0.9%, Cu: 0.4%, Al: 0.08%, and the balance being Fe and impurities.
  • the hardness of this example can reach HRC51, the toughness can reach 85J/cm 2 ; the HIC performance of the etching die, the experiment is carried out according to the NACE TM0248-A experimental solution standard, (CTR) ⁇ 5%, (CSR) ⁇ 2% (CLR) ⁇ 15%; SSC performance according to ASTM G39 standard four-point bending test, 4-point bending test in N solution of NACE TM0177, test time 720 hours, the sample loading stress is 80% of the actual yield strength, After the test, it was observed at 10 times magnification, and there was no crack in the thickness direction of the sample piece.
  • CTR NACE TM0248-A experimental solution standard
  • CSR CSR
  • CLR CLR

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • ing And Chemical Polishing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

一种高硬度精密蚀刻刀模，wt%计，C：0.07～0.09％，Si：0.33～0.35％，Mn：1.5～1.7％，P：0.01～0.03％，S：0.001～0.003％，Nb：0.015～0.017％，Ti：0.023～0.025％，Ni：0.3～0.5％，Cr：0.7～0.9％，Cu：0.2～0.4％，Al：0.06～0.08％，余量为Fe和杂质。高硬度精密蚀刻刀模的热处理工艺包括以下步骤：（一）将蚀刻刀模加热到750-770℃，保温15-17min，空冷10-13min，加热到650-670℃，压缩空气快速冷却到450-470℃，空冷至室温；（二）将蚀刻刀模加热到550-570℃，保温12-14min，喷雾状水冷至370-390℃，加热到610-630℃，水冷至310-330℃，空冷至室温。

Description

一种高硬度精密蚀刻刀模 技术领域
本发明涉及一种模具，具体的说是一种韧性、切削性和耐磨性优异的高硬度精密蚀刻刀模。
背景技术
蚀刻刀模尺寸精度非常高，一般可以保持在±0.03mm，刀口平整程度保持在±0.01左右。蚀刻刀模主要用于模切行业裁切产品标签等，用于液晶显示器上的模组，触摸屏的裁切，蚀刻刀模的显示出了自己相当优越的效果。
蚀刻刀模的制备一般包括以下步骤：
腐蚀：腐蚀部门接到菲林与工单，确认板厚，刀高材料种类之后，即进行贴菲林晒版和曝光，最后经过药水处理之后显出模具雏形，如曝光工作未做好，需对图形进行修补之后才可进入腐蚀机内进行腐蚀，达到要求之后即可取出，洗去药水积炭之后，即可送入下一部门腐蚀部是对模具的一个粗加工部门。
CNC雕刻：雕刻部门接到粗加工之后的刀模，目检确认之后即放入机台进行加工。由于模具大小及难易程度刀线长短的不同，进行制作时间有所差距一般刀模1—4小时，特殊的需8小时甚至24小时以上才可完成CNC加工。完成之后初步确定没有问题，才可送入QC。
QC：QC负责检验刀模尺寸，刀模刀锋等等，并负责制作检验报告，之后送入热处理。根据客户冲切材料不同分为两种处理方式，材料不含不干胶的进行一般热处理即可，不干胶材料除了进行热处理增加硬度之外，还要进行镀铁氟龙的处理，铁氟龙可使冲切的产品不粘刀模，但是由于工艺特殊，镀铁氟龙不会影响刀模的锋利度。由主管在检验报告上盖章之后刀模即可进行包装出货。
镜面OR镀层处理：本处理可去除刀模刀锋侧边微小纹路，达到镜面效果，可有效解决产品冲切抽刀时带出毛刺粉尘的问题，使产品边缘平整光滑，适用于冲切的要求较高的产品。一般刀模多采取镀层处理防止生锈。
发明内容
本发明所要解决的技术问题是，提出一种高硬度精密蚀刻刀模，可有效增加韧性、切削性、耐磨性和硬度。
本发明解决以上技术问题的技术方案是：
一种高硬度精密蚀刻刀模，其重量百分比成分为：C：0.07～0.09％，Si：0.33～0.35％， Mn：1.5～1.7％，P：0.01～0.03％，S：0.001～0.003％，Nb：0.015～0.017％，Ti：0.023～0.025％，Ni：0.3～0.5％，Cr：0.7～0.9％，Cu：0.2～0.4％，Al：0.06～0.08％，余量为Fe和杂质。
高硬度精密蚀刻刀模的热处理工艺，热处理工艺在CNC雕刻工艺后进行，热处理工艺包括以下步骤：
㈠将蚀刻刀模加热到750-770℃，保温15-17分钟，然后空冷10-13分钟，再将刀模加热到650-670℃，然后通过压缩空气快速冷却到450-470℃，最后空冷至室温；
㈡将蚀刻刀模加热到550-570℃，保温12-14分钟，然后采用喷雾状水将蚀刻刀模冷至370-390℃，再将蚀刻刀模加热到610-630℃，然后水冷至310-330℃，最后空冷至室温。
本发明的有益效果是：本发明通过Ni和Cu的含量来改进蚀刻刀模的切削性能；通过Nb、Ti、Cr和Cu的含量来改进蚀刻刀模的硬度，经检测硬度可达HRC47-51；通过Nb、Ti、Ni、Cr和Al的含量来改进韧性，经检测韧性可达80-85J/cm 2；另外，由于蚀刻刀模的制备需要经过腐蚀工艺，因此，在其成分的设计时，不能通过成分的控制来提高其耐蚀性能，但蚀刻刀模在具体使用时，冲切材料大多含有胶类，需要其具有抗酸耐蚀性能，只能通过后续的热处理来提高其抗酸耐蚀性能，本发明通过热处理工艺，使蚀刻刀模具有优异的抗酸耐蚀性能，获得了意想不到的技术效果。本发明蚀刻刀模HIC性能，实验按照NACE TM0248-A实验溶液标准进行，(CTR)≤5％，(CSR)≤2％，(CLR)≤15％；SSC性能按ASTM G39标准进行四点弯曲试验，在NACE TM0177的A溶液中进行4点弯曲试验，试验时间720小时，试样加载应力为实际屈服强度的80％，试验后在10倍放大倍率下观察，试件样品厚度方向没有裂纹。
具体实施方式
实施例1
本实施例是一种高硬度精密蚀刻刀模，其重量百分比成分为：C：0.07％，Si：0.33％，Mn：1.5％，P：0.01％，S：0.001％，Nb：0.015％，Ti：0.023％，Ni：0.3％，Cr：0.7％，Cu：0.2％，Al：0.06％，余量为Fe和杂质。
本实施例的高硬度精密蚀刻刀模的热处理工艺，包括以下步骤：
㈠将蚀刻刀模加热到750℃，保温15分钟，然后空冷10分钟，再将刀模加热到650℃，然后通过压缩空气快速冷却到450℃，最后空冷至室温；
㈡将蚀刻刀模加热到550℃，保温12分钟，然后采用喷雾状水将蚀刻刀模冷至370℃，再将刀模加热到610℃，然后水冷至310℃，最后空冷至室温。
经检测，本实施例硬度可达HRC47，测韧性可达80J/cm 2；蚀刻刀模HIC性能，实验按照NACE TM0248-A实验溶液标准进行，(CTR)≤5％，(CSR)≤2％，(CLR)≤15％；SSC性能按ASTM G39标准进行四点弯曲试验，在NACE TM0177的A溶液中进行4点弯曲试验，试验时间720小时，试样加载应力为实际屈服强度的80％，试验后在10倍放大倍率下观察，试件样品厚度方向没有裂纹。
实施例2
本实施例是一种高硬度精密蚀刻刀模，其重量百分比成分为：C：0.08％，Si：0.34％，Mn：1.6％，P：0.02％，S：0.002％，Nb：0.016％，Ti：0.024％，Ni：0.4％，Cr：0.8％，Cu：0.3％，Al：0.07％，余量为Fe和杂质。
本实施例的高硬度精密蚀刻刀模的热处理工艺，包括以下步骤：
㈠将蚀刻刀模加热到760℃，保温14分钟，然后空冷12分钟，再将刀模加热到660℃，然后通过压缩空气快速冷却到460℃，最后空冷至室温；
㈡将蚀刻刀模加热到560℃，保温13分钟，然后采用喷雾状水将蚀刻刀模冷至380℃，再将刀模加热到620℃，然后水冷至320℃，最后空冷至室温。
经检测，本实施例硬度可达HRC49，测韧性可达82J/cm 2；蚀刻刀模HIC性能，实验按照NACE TM0248-A实验溶液标准进行，(CTR)≤5％，(CSR)≤2％，(CLR)≤15％；SSC性能按ASTM G39标准进行四点弯曲试验，在NACE TM0177的A溶液中进行4点弯曲试验，试验时间720小时，试样加载应力为实际屈服强度的80％，试验后在10倍放大倍率下观察，试件样品厚度方向没有裂纹。
实施例3
本实施例是一种高硬度精密蚀刻刀模，其重量百分比成分为：C：0.09％，Si：0.35％，Mn：1.7％，P：0.03％，S：0.003％，Nb：0.017％，Ti：0.025％，Ni：0.5％，Cr：0.9％，Cu：0.4％，Al：0.08％，余量为Fe和杂质。
本实施例的高硬度精密蚀刻刀模的热处理工艺，包括以下步骤：
㈠将蚀刻刀模加热到770℃，保温17分钟，然后空冷13分钟，再将刀模加热到670℃，然后通过压缩空气快速冷却到470℃，最后空冷至室温；
㈡将蚀刻刀模加热到570℃，保温14分钟，然后采用喷雾状水将蚀刻刀模冷至390℃， 再将刀模加热到630℃，然后水冷至330℃，最后空冷至室温。
经检测，本实施例硬度可达HRC51，测韧性可达85J/cm 2；蚀刻刀模HIC性能，实验按照NACE TM0248-A实验溶液标准进行，(CTR)≤5％，(CSR)≤2％，(CLR)≤15％；SSC性能按ASTM G39标准进行四点弯曲试验，在NACE TM0177的A溶液中进行4点弯曲试验，试验时间720小时，试样加载应力为实际屈服强度的80％，试验后在10倍放大倍率下观察，试件样品厚度方向没有裂纹。
除上述实施例外，本发明还可以有其他实施方式。凡采用等同替换或等效变换形成的技术方案，均落在本发明要求的保护范围。

Claims (8)

  1. 一种高硬度精密蚀刻刀模，其特征在于：其重量百分比成分为：C：0.07～0.09％，Si：0.33～0.35％，Mn：1.5～1.7％，P：0.01～0.03％，S：0.001～0.003％，Nb：0.015～0.017％，Ti：0.023～0.025％，Ni：0.3～0.5％，Cr：0.7～0.9％，Cu：0.2～0.4％，Al：0.06～0.08％，余量为Fe和杂质。
  2. 如权利要求1所述的高硬度精密蚀刻刀模，其特征在于：其重量百分比成分为：C：0.07％，Si：0.33％，Mn：1.5％，P：0.01％，S：0.001％，Nb：0.015％，Ti：0.023％，Ni：0.3％，Cr：0.7％，Cu：0.2％，Al：0.06％，余量为Fe和杂质。
  3. 如权利要求1所述的高硬度精密蚀刻刀模，其特征在于：其重量百分比成分为：C：0.08％，Si：0.34％，Mn：1.6％，P：0.02％，S：0.002％，Nb：0.016％，Ti：0.024％，Ni：0.4％，Cr：0.8％，Cu：0.3％，Al：0.07％，余量为Fe和杂质。
  4. 如权利要求1所述的高硬度精密蚀刻刀模，其特征在于：其重量百分比成分为：C：0.09％，Si：0.35％，Mn：1.7％，P：0.03％，S：0.003％，Nb：0.017％，Ti：0.025％，Ni：0.5％，Cr：0.9％，Cu：0.4％，Al：0.08％，余量为Fe和杂质。
  5. 如权利要求1所述高硬度精密蚀刻刀模的热处理工艺，所述热处理工艺在CNC雕刻工艺后进行，其特征在于：所述热处理工艺包括以下步骤：
    ㈠将蚀刻刀模加热到750-770℃，保温15-17分钟，然后空冷10-13分钟，再将刀模加热到650-670℃，然后通过压缩空气快速冷却到450-470℃，最后空冷至室温；
    ㈡将蚀刻刀模加热到550-570℃，保温12-14分钟，然后采用喷雾状水将蚀刻刀模冷至370-390℃，再将刀模加热到610-630℃，然后水冷至310-330℃，最后空冷至室温。
  6. 如权利要求5所述高硬度精密蚀刻刀模的热处理工艺，其特征在于：所述热处理工艺包括以下步骤：
    ㈠将蚀刻刀模加热到750℃，保温15分钟，然后空冷10分钟，再将刀模加热到650℃，然后通过压缩空气快速冷却到450℃，最后空冷至室温；
    ㈡将蚀刻刀模加热到550℃，保温12分钟，然后采用喷雾状水将蚀刻刀模冷至370℃，再将刀模加热到610℃，然后水冷至310℃，最后空冷至室温。
  7. 如权利要求5所述高硬度精密蚀刻刀模的热处理工艺，其特征在于：所述热处理工艺包括以下步骤：
    ㈠将蚀刻刀模加热到760℃，保温14分钟，然后空冷12分钟，再将刀模加热到660℃， 然后通过压缩空气快速冷却到460℃，最后空冷至室温；
    ㈡将蚀刻刀模加热到560℃，保温13分钟，然后采用喷雾状水将蚀刻刀模冷至380℃，再将刀模加热到620℃，然后水冷至320℃，最后空冷至室温。
  8. 如权利要求5所述高硬度精密蚀刻刀模的热处理工艺，其特征在于：所述热处理工艺包括以下步骤：
    ㈠将蚀刻刀模加热到770℃，保温17分钟，然后空冷13分钟，再将刀模加热到670℃，然后通过压缩空气快速冷却到470℃，最后空冷至室温；
    ㈡将蚀刻刀模加热到570℃，保温14分钟，然后采用喷雾状水将蚀刻刀模冷至390℃，再将刀模加热到630℃，然后水冷至330℃，最后空冷至室温。
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