CN118186202A - Strengthening method and device for magnetostatic field coupling laser impact ferromagnetic metal - Google Patents
Strengthening method and device for magnetostatic field coupling laser impact ferromagnetic metal Download PDFInfo
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Abstract
Description
技术领域Technical Field
本发明属于铁磁性金属强化处理技术领域，尤其涉及一种静磁场耦合激光冲击铁磁性金属的强化方法及装置。The invention belongs to the technical field of ferromagnetic metal strengthening treatment, and in particular relates to a method and a device for strengthening ferromagnetic metal by static magnetic field coupling laser shock.
背景技术Background technique
铁磁性金属马氏体不锈钢基于其较高的强度和中等的耐蚀性被广泛应用于汽轮机低压过渡区叶片，然而热处理工艺中的回火工艺诱导富Cr碳化物析(伴随界面处“贫Cr区”的形成)、过饱和碳原子脱溶和杂质元素偏析，这会加速腐蚀进程、产生回火脆化问题进而降低材料强韧性。Ferromagnetic metal martensitic stainless steel is widely used in turbine low-pressure transition zone blades due to its high strength and moderate corrosion resistance. However, the tempering process in the heat treatment process induces Cr-rich carbide precipitation (accompanied by the formation of a "Cr-poor zone" at the interface), supersaturated carbon atom dissolution and impurity element segregation, which accelerates the corrosion process, causes temper embrittlement problems and thus reduces the strength and toughness of the material.
表面塑性变形强化技术通过在表层引入残余压应力和微观组织细化层从而实现对马氏体不锈钢汽轮机叶片的应力和微观组织双重强化，显著提高汽轮机叶片的强韧性和耐蚀性。传统的机械喷丸和超声喷丸等喷丸类塑性变形强化技术加工马氏体钢诱导的残余压应力层深度较浅，表面直接受到大量钢球的撞击因而会导致表面粗化并产生温升及局部氧化问题。激光冲击强化(LSP:Laser shock peening)虽然是一种对表面无损的新型塑性变形强化技术，在超高应变率(达到106s-1以上)的LSP冷加工过程中，局部激光热能能够影响到材料表面而没有足够时间传递到材料内部、因此不能诱导较深的晶粒细化层和富Cr碳化物的进一步分解、进而无法产生有效的微观组织强化/耐蚀效应。Surface plastic deformation strengthening technology can achieve dual strengthening of stress and microstructure of martensitic stainless steel turbine blades by introducing residual compressive stress and microstructure refinement layer in the surface layer, thus significantly improving the toughness and corrosion resistance of turbine blades. The residual compressive stress layer induced by traditional mechanical shot peening and ultrasonic shot peening plastic deformation strengthening technology in processing martensitic steel is shallow, and the surface is directly impacted by a large number of steel balls, which will cause surface coarsening, temperature rise and local oxidation problems. Although laser shock peening (LSP) is a new type of plastic deformation strengthening technology that does not damage the surface, during the LSP cold processing process with ultra-high strain rate (reaching more than 10 6 s -1 ), local laser heat energy can affect the surface of the material without enough time to be transferred to the interior of the material, so it cannot induce the further decomposition of the deeper grain refinement layer and Cr-rich carbides, and thus cannot produce effective microstructure strengthening/corrosion resistance effects.
现有技术中，大多数采用电生磁，装置复杂，并且脉冲磁场是秒数量级的，在一定时间内有磁场、一定时间内无磁场；而激光脉冲也是同样道理，但是激光脉冲的作用时间是纳秒级别的，两者的耦合很难。还有现有技术中采用两块磁铁，样品放两块磁铁的中间，两块磁铁之间的距离受样品尺寸影响很大，会导致磁力不足，磁铁、试样和激光束的相对位置不同。In the existing technology, most of them use electromagnetism, which is complex and the pulse magnetic field is in the order of seconds, with a magnetic field for a certain period of time and no magnetic field for a certain period of time. The same is true for laser pulses, but the action time of laser pulses is in the nanosecond level, and the coupling between the two is difficult. In the existing technology, two magnets are used, and the sample is placed between the two magnets. The distance between the two magnets is greatly affected by the size of the sample, which will lead to insufficient magnetic force and different relative positions of the magnets, samples and laser beams.
因此，现有技术中的磁场不稳定、磁力不足的原因，导致无法对马氏体不锈钢汽轮机叶片的应力和微观组织进行深度强化。Therefore, due to the unstable magnetic field and insufficient magnetic force in the prior art, it is impossible to deeply strengthen the stress and microstructure of the martensitic stainless steel turbine blades.
发明内容Summary of the invention
本发明提出了一种静磁场耦合激光冲击铁磁性金属的强化方法及装置，以解决上述现有技术中存在的技术问题。The present invention proposes a method and device for strengthening ferromagnetic metal by static magnetic field coupling laser shock, so as to solve the technical problems existing in the above-mentioned prior art.
为实现上述目的，本发明提供了一种静磁场耦合激光冲击铁磁性金属的强化方法，包括以下步骤：To achieve the above object, the present invention provides a method for strengthening ferromagnetic metal by static magnetic field coupling laser shock, comprising the following steps:
向铁磁性金属试件施加静磁场，以使得所述铁磁性金属试件的内部形成附加磁场；Applying a static magnetic field to the ferromagnetic metal specimen so that an additional magnetic field is formed inside the ferromagnetic metal specimen;
通过激光发射装置对所述待加工表面进行单点强化；Performing single-point strengthening on the surface to be processed by a laser emitting device;
其中，基于所述附加磁场，以使得所述脉冲激光诱导的等离子体受到洛伦兹力作用而形成环形运动、进而受到进一步的约束作用，并使得激光诱导的塑性变形过程切割所述铁磁性金属试件内部的磁感线形成感应热效应，且驱动所述铁磁性金属试件内部的位错运动，基于所述位错运动，加剧所述塑性变形过程。Wherein, based on the additional magnetic field, the pulsed laser induced plasma is subjected to the Lorentz force to form a circular motion and is further constrained, and the laser-induced plastic deformation process cuts the magnetic flux lines inside the ferromagnetic metal specimen to form an induced thermal effect, and drives the dislocation movement inside the ferromagnetic metal specimen. Based on the dislocation movement, the plastic deformation process is intensified.
优选地，向铁磁性金属试件施加静磁场的过程包括：Preferably, the process of applying a static magnetic field to the ferromagnetic metal specimen comprises:
将铁磁性金属试件吸附在磁铁上，以使得所述铁磁性金属试件发生磁化，其中所述磁铁采用钕铁硼磁体。The ferromagnetic metal specimen is adsorbed on a magnet to magnetize the ferromagnetic metal specimen, wherein the magnet is a neodymium iron boron magnet.
强化方法还包括：在所述铁磁性金属试件的待加工表面上粘贴黑胶带，对所述黑胶带进行表面喷射流水，在黑胶带表面形成流水层。The strengthening method also includes: sticking black tape on the surface to be processed of the ferromagnetic metal specimen, spraying running water on the surface of the black tape, and forming a running water layer on the surface of the black tape.
优选地，所述静磁场的磁场强度范围为0.6-1.2T。Preferably, the magnetic field strength of the static magnetic field is in the range of 0.6-1.2T.
优选地，所述激光的激光能量为1-15J，光斑直径为1mm～6mm，光斑脉宽为18-20ns，激光波长为1064nm。Preferably, the laser energy of the laser is 1-15 J, the spot diameter is 1 mm to 6 mm, the spot pulse width is 18-20 ns, and the laser wavelength is 1064 nm.
为了实现上述技术目的，本发明还提供了一种静磁场耦合激光冲击铁磁性金属的强化装置，用于实施上述任一项所述静磁场耦合激光冲击铁磁性金属的强化方法，所述装置包括：In order to achieve the above technical objectives, the present invention also provides a static magnetic field coupled laser shock ferromagnetic metal strengthening device, which is used to implement any of the above static magnetic field coupled laser shock ferromagnetic metal strengthening methods, and the device comprises:
向铁磁性金属试件施加静磁场的磁铁，对所述待加工表面进行单点强化的激光发射装置；A magnet for applying a static magnetic field to a ferromagnetic metal specimen, and a laser emitting device for single-point strengthening of the surface to be processed;
其中，基于所述磁铁在所述铁磁性金属试件的内部形成附加磁场，基于所述附加磁场，以使得所述脉冲激光诱导的等离子体受到洛伦兹力作用而形成环形运动、进而受到进一步的约束作用，并使得激光诱导的塑性变形切割所述铁磁性金属试件内部的磁感线形成感应热效应，且驱动所述铁磁性金属试件内部的位错运动，基于所述位错运动，加剧所述塑性变形过程。Among them, based on the magnet forming an additional magnetic field inside the ferromagnetic metal specimen, based on the additional magnetic field, the pulsed laser induced plasma is subjected to the Lorentz force to form a circular motion and is further constrained, and the laser-induced plastic deformation cuts the magnetic flux lines inside the ferromagnetic metal specimen to form an induced thermal effect, and drives the dislocation movement inside the ferromagnetic metal specimen, and based on the dislocation movement, the plastic deformation process is intensified.
优选地，强化装置还包括：在所述铁磁性金属试件的待加工表面上粘贴黑胶带，通过喷水装置对所述黑胶带进行表面喷射流水，在黑胶带表面形成流水层。Preferably, the strengthening device further comprises: sticking black tape on the surface to be processed of the ferromagnetic metal specimen, and spraying flowing water on the surface of the black tape through a water spray device to form a flowing water layer on the surface of the black tape.
优选地，强化装置还包括夹具部件，通过所述夹具部件对所述铁磁性金属试件、所述磁铁进行固定。Preferably, the strengthening device further comprises a clamp component, through which the ferromagnetic metal specimen and the magnet are fixed.
优选地，强化装置还包括控制装置，通过所述控制装置控制所述喷水装置、所述激光发射装置和所述夹具部件的位置关系，以实现所述喷水装置的喷射方向、所述激光发射装置的光束方向均垂直于所述黑胶带的表面。Preferably, the strengthening device also includes a control device, which controls the positional relationship between the water spray device, the laser emitting device and the clamp component to ensure that the spraying direction of the water spray device and the light beam direction of the laser emitting device are perpendicular to the surface of the black tape.
本发明还提供了一种汽轮机叶片，由上述任一项所述的静磁场耦合激光冲击铁磁性金属的强化方法制备得到。The present invention also provides a steam turbine blade, which is prepared by any of the above-mentioned methods for strengthening ferromagnetic metals by static magnetic field coupling laser shock.
与现有技术相比，本发明具有如下优点和技术效果：Compared with the prior art, the present invention has the following advantages and technical effects:
本发明提供了一种静磁场耦合激光冲击铁磁性金属的强化方法，向铁磁性金属试件施加静磁场，以使得所述铁磁性金属试件的内部形成附加磁场；在所述铁磁性金属试件的待加工表面喷射流水层；通过激光发射装置对所述待加工表面进行单点强化；其中，基于所述附加磁场，以使得所述脉冲激光诱导的等离子体受到洛伦兹力作用而形成环形运动、进而受到进一步的约束作用，并使得激光诱导的塑性变形切割所述铁磁性金属试件内部的磁感线形成感应热效应从而进一步促进塑性变形，且驱动所述铁磁性金属试件内部的位错运动使塑性变形加剧。The invention provides a strengthening method for ferromagnetic metal by static magnetic field coupling laser impact, which comprises the following steps: applying a static magnetic field to a ferromagnetic metal specimen so as to form an additional magnetic field inside the ferromagnetic metal specimen; spraying a flowing water layer on a surface to be processed of the ferromagnetic metal specimen; and single-point strengthening of the surface to be processed by a laser emitting device; wherein, based on the additional magnetic field, the plasma induced by the pulsed laser is subjected to the Lorentz force to form a circular motion and further constrained, and the laser-induced plastic deformation cuts the magnetic flux lines inside the ferromagnetic metal specimen to form an induced thermal effect, thereby further promoting the plastic deformation, and driving the dislocation motion inside the ferromagnetic metal specimen to intensify the plastic deformation.
本发明采用静磁场，结构和操作简单，铁磁性金属试件内部形成与磁铁相同的附加磁场，激光冲击强化诱导的超高应变率塑性变形会以极快的速度切割金属内部的磁感线进行形成感应热效应，促进塑性变形。The present invention adopts a static magnetic field with simple structure and operation. An additional magnetic field identical to that of a magnet is formed inside a ferromagnetic metal specimen. The ultra-high strain rate plastic deformation induced by laser shock strengthening cuts the magnetic flux lines inside the metal at an extremely fast speed to form an induced thermal effect, thereby promoting plastic deformation.
本发明通过激光诱导的等离子体在磁场中受到洛伦兹力作用而形成环形运动，进而受到进一步的约束作用，诱导更严重的塑性变形；塑性变形过程中强磁场同步驱动金属内部位错运动，显著提高位错运动速率，导致材料晶界处堆积大量位错，使塑性变形加剧，最终获得更高幅值的残余压应力值，完成铁磁性金属的深度强化。The present invention uses laser-induced plasma to form a circular motion in a magnetic field under the action of the Lorentz force, which is then further constrained to induce more severe plastic deformation; during the plastic deformation process, the strong magnetic field synchronously drives the movement of dislocations inside the metal, significantly increasing the dislocation movement rate, causing a large number of dislocations to accumulate at the grain boundaries of the material, aggravating the plastic deformation, and ultimately obtaining a higher amplitude residual compressive stress value, thereby completing the deep strengthening of the ferromagnetic metal.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
构成本申请的一部分的附图用来提供对本申请的进一步理解，本申请的示意性实施例及其说明用于解释本申请，并不构成对本申请的不当限定。在附图中：The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:
图1为本发明实施例的静磁场耦合激光冲击铁磁性金属的强化装置示意图；FIG1 is a schematic diagram of a device for strengthening ferromagnetic metal by static magnetic field coupling laser shock according to an embodiment of the present invention;
图2为本发明实施例的单点强化后的残余应力数据图；FIG2 is a graph showing residual stress data after single-point strengthening according to an embodiment of the present invention;
其中，1-铁磁性金属试件，2-磁铁，3-第一夹具，4-第二夹具，5-黑胶带，6-电脑控制系统，7-流水机器人，8-激光发生器。Among them, 1-ferromagnetic metal specimen, 2-magnet, 3-first fixture, 4-second fixture, 5-black tape, 6-computer control system, 7-flow robot, 8-laser generator.
具体实施方式Detailed ways
需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。下面将参考附图并结合实施例来详细说明本申请。It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.
需要说明的是，在附图的流程图示出的步骤可以在诸如一组计算机可执行指令的计算机系统中执行，并且，虽然在流程图中示出了逻辑顺序，但是在某些情况下，可以以不同于此处的顺序执行所示出或描述的步骤。It should be noted that the steps shown in the flowcharts of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and that, although a logical order is shown in the flowcharts, in some cases, the steps shown or described can be executed in an order different from that shown here.
实施例一Embodiment 1
本实施例中提供一种静磁场耦合激光冲击铁磁性金属的强化方法，包括：This embodiment provides a method for strengthening ferromagnetic metal by static magnetic field coupling laser shock, comprising:
向铁磁性金属试件1施加静磁场，以使得所述铁磁性金属试件1的内部形成附加磁场；Applying a static magnetic field to the ferromagnetic metal specimen 1 so that an additional magnetic field is formed inside the ferromagnetic metal specimen 1;
具体地，用线切割获取特定面积的铁磁性金属试件；对铁磁性金属试件的表面依次使用180、400和800目SiC砂纸进行打磨，再使用无水乙醇进行超声波清洗15分钟，获得预处理后的铁磁性金属试件；将预处理后的铁磁性金属试件1吸附在磁铁2上，以使得所述铁磁性金属试件1发生磁化，其中所述磁铁采用钕铁硼磁体；Specifically, a ferromagnetic metal specimen of a specific area is obtained by wire cutting; the surface of the ferromagnetic metal specimen is polished with 180, 400 and 800 mesh SiC sandpaper in sequence, and then ultrasonically cleaned with anhydrous ethanol for 15 minutes to obtain a pretreated ferromagnetic metal specimen; the pretreated ferromagnetic metal specimen 1 is adsorbed on a magnet 2 to magnetize the ferromagnetic metal specimen 1, wherein the magnet is a neodymium iron boron magnet;
通过激光发射装置对所述待加工表面进行单点强化；Single-point strengthening of the surface to be processed is performed by a laser emitting device;
具体地，激光发射装置为激光发生器8，通过激光发生器8对铁磁性金属试件1进行单点加工；Specifically, the laser emitting device is a laser generator 8, and the laser generator 8 is used to perform single-point processing on the ferromagnetic metal specimen 1;
其中，基于所述附加磁场，以使得所述脉冲激光诱导的等离子体受到洛伦兹力作用而形成环形运动、进而受到进一步的约束作用，并使得激光诱导的塑性变形过程切割所述铁磁性金属试件1内部的磁感线形成感应热效应，且驱动所述铁磁性金属试件内部的位错运动，基于所述位错运动，加剧所述塑性变形过程。Among them, based on the additional magnetic field, the pulsed laser induced plasma is subjected to the Lorentz force to form a circular motion and is further constrained, and the laser-induced plastic deformation process cuts the magnetic flux lines inside the ferromagnetic metal specimen 1 to form an induced thermal effect, and drives the dislocation movement inside the ferromagnetic metal specimen. Based on the dislocation movement, the plastic deformation process is intensified.
强化方法还包括：在所述铁磁性金属试件的待加工表面上粘贴黑胶带，对所述黑胶带进行表面喷射流水，在黑胶带表面形成流水层。The strengthening method also includes: sticking black tape on the surface to be processed of the ferromagnetic metal specimen, spraying running water on the surface of the black tape, and forming a running water layer on the surface of the black tape.
具体地，通过所述流水机器人7对铁磁性金属试件1上面的黑胶带5进行喷射流水，形成1mm厚的流水层；Specifically, the water flow robot 7 sprays water on the black tape 5 on the ferromagnetic metal test piece 1 to form a 1 mm thick water layer;
所述静磁场的磁场强度范围为0.6-1.2T。The magnetic field strength of the static magnetic field ranges from 0.6 to 1.2 T.
所述激光发生器8的激光能量为1-15J，光斑直径为1mm～6mm，光斑脉宽为18-20ns，激光波长为1064nm。The laser energy of the laser generator 8 is 1-15 J, the spot diameter is 1 mm to 6 mm, the spot pulse width is 18-20 ns, and the laser wavelength is 1064 nm.
本实施例，采用1T磁场强度的钕铁硼磁铁、激光能量3/4/5J、光斑直径3mm、光斑脉宽18ns和激光波长1064nm进行单点强化。未处理试样命名为AR、激光能量3/4/5J的激光冲击强化试样分别命名为LSP-3J、LSP-4J、LSP-5J，磁场耦合激光能量3/4/5J的激光冲击强化试样分别命名为MFALSP-3J、MFALSP-4J、MFALSP-5J，单点强化后的残余应力数据图如图2所示。In this embodiment, single-point strengthening is performed using a NdFeB magnet with a magnetic field strength of 1T, a laser energy of 3/4/5J, a spot diameter of 3mm, a spot pulse width of 18ns, and a laser wavelength of 1064nm. The untreated sample is named AR, the laser shock strengthening samples with a laser energy of 3/4/5J are named LSP-3J, LSP-4J, and LSP-5J, respectively, and the laser shock strengthening samples with a magnetic field coupled laser energy of 3/4/5J are named MFALSP-3J, MFALSP-4J, and MFALSP-5J, respectively. The residual stress data after single-point strengthening is shown in Figure 2.
应力测量结果表明：激光冲击强化后试样的残余压应力相较于原始试样要明显增大，相同参数下磁场耦合激光冲击强化试样的残余压应力值最大。值得注意的是，耦合工艺仅使用3J激光能量诱导的残余压应力(-269MPa)就要大于单一激光冲击强化使用5J能量诱导的应力值(-255MPa)。此外，耦合工艺试样诱导的最大压应力值相较于单一能场LSP试样和原始试样分别提升26.7％和64.0％。The stress measurement results show that the residual compressive stress of the sample after laser shock strengthening is significantly increased compared with the original sample. Under the same parameters, the residual compressive stress value of the magnetic field coupled laser shock strengthening sample is the largest. It is worth noting that the residual compressive stress (-269MPa) induced by the coupling process using only 3J laser energy is greater than the stress value (-255MPa) induced by single laser shock strengthening using 5J energy. In addition, the maximum compressive stress value induced by the coupled process sample is 26.7% and 64.0% higher than that of the single energy field LSP sample and the original sample, respectively.
与现有技术相比，本实施例具有如下优点和技术效果：Compared with the prior art, this embodiment has the following advantages and technical effects:
本实施例采用静磁场，结构和操作简单，铁磁性金属试件内部形成与磁铁相同的附加磁场，激光冲击强化诱导的超高应变率塑性变形会以极快的速度切割金属内部的磁感线进行形成感应热效应，促进塑性变形。This embodiment uses a static magnetic field with simple structure and operation. An additional magnetic field identical to that of a magnet is formed inside the ferromagnetic metal specimen. The ultra-high strain rate plastic deformation induced by laser shock strengthening will cut the magnetic flux lines inside the metal at an extremely fast speed to form an induced thermal effect, thereby promoting plastic deformation.
本实施例通过激光诱导的等离子体在磁场中受到洛伦兹力作用而形成环形运动，结合流水层进一步约束等离子体，形成更高压力的激光冲击波，诱导更严重的塑性变形；塑性变形过程中强磁场同步驱动金属内部位错运动，显著提高位错运动速率，导致材料晶界处堆积大量位错，使塑性变形加剧，最终获得更高幅值的残余压应力值，完成铁磁性金属的深度强化。In this embodiment, the laser-induced plasma is subjected to the Lorentz force in the magnetic field to form a circular motion, and the plasma is further constrained by the flowing water layer to form a laser shock wave with a higher pressure, thereby inducing more severe plastic deformation. During the plastic deformation process, the strong magnetic field synchronously drives the movement of dislocations inside the metal, significantly increasing the dislocation movement rate, causing a large number of dislocations to accumulate at the grain boundaries of the material, aggravating the plastic deformation, and ultimately obtaining a higher amplitude residual compressive stress value, thereby completing the deep strengthening of the ferromagnetic metal.
实施例二Embodiment 2
如图1所示，本实施例提供了一种静磁场耦合激光冲击铁磁性金属的强化装置，用于实施实施例一中任一项所述静磁场耦合激光冲击铁磁性金属的强化方法，所述装置包括：As shown in FIG1 , this embodiment provides a device for strengthening ferromagnetic metal by static magnetic field coupling laser shock, which is used to implement the method for strengthening ferromagnetic metal by static magnetic field coupling laser shock in any one of the first embodiments, and the device comprises:
向铁磁性金属试件1施加静磁场的磁铁2、对所述待加工表面进行单点强化的激光发射装置；A magnet 2 for applying a static magnetic field to a ferromagnetic metal specimen 1, and a laser emitting device for single-point strengthening of the surface to be processed;
具体地，磁铁2采用强磁力钕铁硼磁铁，磁铁2对铁磁性金属试件1的吸附方式包括：在试样待加工面的两侧分别吸附一块磁铁和在试样待加工面的背面吸附一块磁铁。Specifically, the magnet 2 is a strong NdFeB magnet, and the magnet 2 adsorbs the ferromagnetic metal specimen 1 in the following manners: adsorbing a magnet on both sides of the specimen surface to be processed and adsorbing a magnet on the back of the specimen surface to be processed.
其中，基于所述磁铁在所述铁磁性金属试件的内部形成附加磁场，基于所述附加磁场，以使得所述脉冲激光诱导的等离子体受到洛伦兹力作用而形成环形运动、进而受到进一步的约束作用，并使得激光诱导的塑性变形过程切割所述铁磁性金属试件内部的磁感线形成感应热效应，且驱动所述铁磁性金属试件内部的位错运动，基于所述位错运动，加剧所述塑性变形过程。Among them, based on the magnet forming an additional magnetic field inside the ferromagnetic metal specimen, based on the additional magnetic field, the pulsed laser induced plasma is subjected to the Lorentz force to form a circular motion and is further constrained, and the laser-induced plastic deformation process cuts the magnetic flux lines inside the ferromagnetic metal specimen to form an induced thermal effect, and drives the dislocation movement inside the ferromagnetic metal specimen, and based on the dislocation movement, the plastic deformation process is intensified.
强化装置还包括：在所述铁磁性金属试件的待加工表面上粘贴黑胶带5，通过流水机器人7对所述黑胶带5进行表面喷射，形成1mm厚的流水层。The strengthening device also includes: sticking a black tape 5 on the surface to be processed of the ferromagnetic metal specimen, and spraying the surface of the black tape 5 by a water flow robot 7 to form a 1 mm thick water flow layer.
强化装置还包括夹具部件，通过所述夹具部件对所述铁磁性金属试件、所述磁铁进行固定。The strengthening device also includes a clamp component, through which the ferromagnetic metal test piece and the magnet are fixed.
具体地，夹具部件包括第一夹具3和第二夹具4，通过第一夹具3和第二夹具4对所述铁磁性金属试件1、所述磁铁2进行装夹固定。Specifically, the fixture component includes a first fixture 3 and a second fixture 4 , and the ferromagnetic metal specimen 1 and the magnet 2 are clamped and fixed by the first fixture 3 and the second fixture 4 .
强化装置还包括控制装置，通过所述控制装置控制所述喷水装置、所述激光发射装置和所述夹具部件的位置关系，以实现所述喷水装置的喷射方向、所述激光发射装置的光束方向均垂直于所述黑胶带的表面。The strengthening device also includes a control device, which controls the positional relationship between the water spray device, the laser emitting device and the clamp component to ensure that the spray direction of the water spray device and the light beam direction of the laser emitting device are perpendicular to the surface of the black tape.
具体地，控制装置采用电脑控制系统6，通过电脑控制系统6的机械臂的三爪卡盘对磁铁2进行装夹，通过调整机械臂，确定铁磁性金属试件1的待加工表面和激光发生器8的激光束出光口的相对位置，使得激光束作用方向垂直与铁磁性金属试件1的待加工表面；通过电脑控制系统6控制流水机器人7在黑胶带5表面喷射1mm厚的流水层。Specifically, the control device adopts a computer control system 6, and the magnet 2 is clamped by the three-jaw chuck of the robot arm of the computer control system 6. The relative position of the surface to be processed of the ferromagnetic metal specimen 1 and the laser beam outlet of the laser generator 8 is determined by adjusting the robot arm, so that the action direction of the laser beam is perpendicular to the surface to be processed of the ferromagnetic metal specimen 1; the computer control system 6 controls the water flow robot 7 to spray a 1 mm thick water layer on the surface of the black tape 5.
实施例三Embodiment 3
本实施例提供了一种汽轮机叶片，由实施例一任一项所述的静磁场耦合激光冲击铁磁性金属的强化方法制备得到耐蚀性金属，将耐蚀性金属作为基底制备出汽轮机叶片。This embodiment provides a steam turbine blade, which is prepared by the static magnetic field coupled laser shock ferromagnetic metal strengthening method described in any one of the first embodiments to obtain corrosion-resistant metal, and the corrosion-resistant metal is used as a substrate to prepare the steam turbine blade.
以上所述，仅为本申请较佳的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到的变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应该以权利要求的保护范围为准。The above is only a preferred specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.
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