CN103191971A - Electromagnetism-assisted forming device and method for dissimilar metal composite boards - Google Patents

Electromagnetism-assisted forming device and method for dissimilar metal composite boards Download PDF

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CN103191971A
CN103191971A CN2013101109064A CN201310110906A CN103191971A CN 103191971 A CN103191971 A CN 103191971A CN 2013101109064 A CN2013101109064 A CN 2013101109064A CN 201310110906 A CN201310110906 A CN 201310110906A CN 103191971 A CN103191971 A CN 103191971A
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pressure
blank holder
liquid
punch
dissimilar metal
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林俊峰
李峰
刘钢
苑世剑
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Harbin Institute of Technology Shenzhen
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Abstract

异种金属复合板材电磁辅助成形装置及其方法,它涉及一种复合板材成形的装置及方法,以解决现有金属复合板材拉深成形过程中,板材减薄严重直至破裂的问题。装置:线圈设置在环形线圈槽中,压边圈的内壁与圆柱之间设有液体通道,压边圈的侧壁上横向设有上进液道,凹模的侧壁上横向设有下进液道。方法:一、将复合板料放在压边圈槽的底面上;二、向液体通道内施加正向液体,向凹模腔内施加反向液体,通过线圈对复合板料的法兰外缘施加径向电磁力Fd;三、复合板料在反向压力Fp2、正向压力Fp1、径向电磁力Fd联合作用下成形;四、先卸载正向液体压力P1、再卸载反向液体压力P2,凸模回程,取出成形零件。本发明用于异种金属复合板材成形。

The invention relates to an electromagnetically assisted forming device and method for a heterogeneous metal composite sheet, which relates to a device and a method for forming a composite sheet, in order to solve the problem that the sheet is seriously thinned until it is broken during the deep drawing and forming process of the existing metal composite sheet. Device: The coil is set in the annular coil groove, there is a liquid passage between the inner wall of the blank holder and the cylinder, the upper liquid inlet is arranged horizontally on the side wall of the blank holder, and the lower liquid inlet is arranged horizontally on the side wall of the die road. Method: 1. Put the composite sheet on the bottom surface of the blank holder groove; 2. Apply forward liquid to the liquid channel, apply reverse liquid to the die cavity, and use the coil to align the outer edge of the flange of the composite sheet. Apply radial electromagnetic force F d ; 3. The composite sheet is formed under the joint action of reverse pressure Fp 2 , forward pressure Fp 1 , and radial electromagnetic force F d ; 4. Unload positive liquid pressure P 1 first, and then unload Reverse liquid pressure P 2 , the punch returns, and the formed parts are taken out. The invention is used for forming heterogeneous metal composite plates.

Description

异种金属复合板材电磁辅助成形装置及其方法Electromagnetic-assisted forming device and method for dissimilar metal composite sheet

技术领域technical field

本发明涉及一种复合板材成形的装置及方法,具体涉及一种应用电磁辅助提高异种金属复合板成形极限的成形方法。The invention relates to a device and method for forming a composite plate, in particular to a forming method for improving the forming limit of a heterogeneous metal composite plate by using electromagnetic assistance.

背景技术Background technique

随着现代工业技术的发展和各种新技术、新产业的出现,人们对材料性能的要求日益增高,在某些特殊条件下,单一组元材料的性能已经很难满足使用要求。通过各种不同的连接方法将单一金属材料复合为一体,制备成金属复合板,这种经过合理设计组合后的层状复合板结合了不同金属组元各自的优点,得到了单层金属材料所不具有的物理、化学性能以及力学特性,满足高强度、高比刚度、抗疲劳性、尺寸稳定、耐磨、抗振等性能的要求,同时节省了稀有贵重材料,降低了生产成本。由于复合板具有良好的综合性能及优越的性价比,国内外都非常重视它的研究与开发。在品种方面,根据不同的材料服役条件,开发了钛系列、不锈钢系列、铝系列、铜系列复合板等,在成形工艺方面则研究了如爆炸复合法、轧制复合法、扩散连接法、液固相复合法等方法。液相复合法、半固态压力复合法等先进方法的出现,使大批量、连续化生产金属复合板成为可能、降低了复合板的制造成本,并具有很高的性价比。由此,金属复合板的成形方法成为材料加工领域下一步的研究重点。金属复合板的成形比单一金属板材成形复杂得多,它不仅需要考虑成形的相关工艺因素,还要考虑金属板料各组元的塑性力学性能及变形协调能力。在成形过程中会造成上下两层板变形不协调,容易产生错动和起皱,其成形机理远比单层板复杂。With the development of modern industrial technology and the emergence of various new technologies and new industries, people's requirements for material performance are increasing. Under some special conditions, the performance of a single component material has been difficult to meet the use requirements. A single metal material is composited into one body through various connection methods to prepare a metal composite board. This layered composite board after rational design and combination combines the respective advantages of different metal components, and obtains a single-layer metal material. It does not have unique physical, chemical and mechanical properties, and meets the requirements of high strength, high specific stiffness, fatigue resistance, dimensional stability, wear resistance, vibration resistance, etc., while saving rare and precious materials and reducing production costs. Due to the good comprehensive performance and superior cost performance of composite panels, both at home and abroad attach great importance to its research and development. In terms of varieties, titanium series, stainless steel series, aluminum series, copper series clad plates, etc. have been developed according to different service conditions of materials. Solid phase composite method and so on. The emergence of advanced methods such as liquid phase composite method and semi-solid pressure composite method makes it possible to produce metal composite panels in large quantities and continuously, reduces the manufacturing cost of composite panels, and has a high cost performance. Therefore, the forming method of metal composite panels has become the focus of further research in the field of material processing. The forming of metal composite panels is much more complicated than that of a single metal sheet. It not only needs to consider the relevant process factors of forming, but also considers the plastic mechanical properties and deformation coordination capabilities of each component of the metal sheet. During the forming process, the deformation of the upper and lower two-layer boards will be uncoordinated, and misalignment and wrinkling will easily occur. The forming mechanism is far more complicated than that of a single-layer board.

传统的板材液压成形是在成形板料的下表面施加液体压力,使坯料在液体压力作用下贴靠凸模,来实现金属板材零件的成形,如图2所示。为解决锥形件和球底筒形件等成形过程中过低反向压力容易导致凸模圆角破裂和过高反向压力导致悬空区破裂的问题,采用了正反向加压充液拉深方法,就是在成形坯料的上表面也施加液压来配合底部的充液拉深,形成双面加压复合成形。上表面的正向压力可以部分甚至全部抵消底部反向压力导致的反胀,允许施加更大的反向压力抑制减薄,提高成形极限。但是正向压力的存在虽然能提高反向压力的数值,同时也减少了板料与凸模间的有益摩擦力的作用,其正反作用相互抵消,因此双向加压对于提高板料极限拉深比的效果是有限的。The traditional hydroforming of sheet metal is to apply liquid pressure on the lower surface of the formed sheet, so that the blank is pressed against the punch under the action of liquid pressure to realize the forming of sheet metal parts, as shown in Figure 2. In order to solve the problem that too low reverse pressure will easily lead to the rupture of punch round corners and too high reverse pressure will cause rupture of the suspended area during the forming process of conical parts and spherical bottom cylindrical parts, etc., a forward and reverse pressurized liquid-filled pull The deep method is to apply hydraulic pressure on the upper surface of the forming blank to cooperate with the liquid-filled deep drawing at the bottom to form double-sided pressurized composite forming. The positive pressure on the upper surface can partly or even completely offset the anti-expansion caused by the reverse pressure on the bottom, allowing greater reverse pressure to suppress thinning and improve the forming limit. However, although the existence of positive pressure can increase the value of reverse pressure, it also reduces the beneficial friction between the sheet and the punch, and its positive and negative effects cancel each other out. The effect of ratio is limited.

传统的径向力施加方法,如图3所示,是将液室压力引到坯料法兰外缘实现径向加载,径向压力与液室压力相等,且不能独立调节。相比较通过液压系统施加径向液压力的方法,使用磁脉冲成形装置,更为简单高效,易于控制,而且节约成本和场地。The traditional radial force application method, as shown in Figure 3, is to introduce the pressure of the liquid chamber to the outer edge of the blank flange to realize radial loading. The radial pressure is equal to the pressure of the liquid chamber and cannot be adjusted independently. Compared with the method of applying radial hydraulic pressure through a hydraulic system, the use of a magnetic pulse shaping device is simpler, more efficient, easier to control, and saves cost and space.

发明内容Contents of the invention

本发明的目的是为解决现有金属复合板材拉深成形过程中出现的成形极限低,导致板材在成形过程中减薄严重直至破裂的问题,而提供一种异种金属复合板材电磁辅助成形装置及其方法。The purpose of the present invention is to solve the problem that the forming limit is low in the deep-drawing forming process of the existing metal composite sheet, which leads to the serious thinning of the sheet until it breaks during the forming process, and to provide an electromagnetic-assisted forming device for dissimilar metal composite sheets and its method.

本发明的是通过以下技术方案来实现的:The present invention is achieved by the following technical solutions:

装置:所述装置包括凸模、压边圈、密封圈、线圈和凹模,所述凹模的上端面由里向外设有凹模腔和压边圈槽,压边圈槽的底面上设有环形线圈槽,线圈设置在环形线圈槽中,压边圈的内侧壁上设有环形密封圈槽,凸模的冲头为圆台,凸模的尾部为圆柱,压边圈套装在圆柱上,且压边圈的内壁与圆柱之间设有液体通道,密封圈套装在圆柱上且设置在环形密封圈槽中,压边圈的侧壁上横向设有上进液道,凹模的侧壁上横向设有下进液道,凸模和压边圈位于凹模的上方,且凸模与凹模腔正对,压边圈与压边圈槽正对。Device: the device includes a punch, a binder ring, a sealing ring, a coil and a die, and the upper end surface of the die is provided with a die cavity and a binder ring groove from the inside to the outside, and the bottom surface of the binder ring groove is There is an annular coil groove, the coil is set in the annular coil groove, the inner wall of the blank holder is provided with an annular sealing ring groove, the punch of the punch is a round table, the tail of the punch is a cylinder, and the blank holder is set on the cylinder , and there is a liquid passage between the inner wall of the blank holder ring and the cylinder, the sealing ring is set on the cylinder and arranged in the annular sealing ring groove, the side wall of the blank holder ring is provided with an upper liquid channel horizontally, and the side wall of the die A lower liquid inlet channel is arranged on the upper side, the punch and the binder ring are located above the die, and the punch and the die cavity are facing each other, and the binder ring is facing the groove of the binder ring.

方法:所述方法是通过以下步骤实现的:Method: The method is achieved through the following steps:

步骤一、将复合板料放置在压边圈槽的底面上,压边圈下移至压边圈的下端面距复合板料的上端面0.5mm~2mm处,对压边圈施加压边力FBH为5kN~200kN;Step 1. Place the composite sheet on the bottom surface of the blankholder groove, move the blankholder down until the lower end surface of the blankholder is 0.5mm to 2mm from the upper end surface of the composite sheet, and apply a blankholder force to the blankholder FBH is 5kN~200kN;

步骤二、凸模下移到复合板料的上表面,同时由上进液道向液体通道内施加正向液体,其正向液体压力P1为2MPa~50MPa,由下进液道向凹模腔内施加反向液体,其反向液体压力P2应大于1.5倍正向液体压力P1、小于100MPa,然后通过线圈对复合板料的法兰外缘施加径向电磁力Fd为10MPa~100Mpa;Step 2. The punch moves down to the upper surface of the composite sheet, and at the same time, a positive liquid is applied to the liquid channel from the upper liquid inlet. Reverse liquid is applied inside, the reverse liquid pressure P 2 should be greater than 1.5 times the forward liquid pressure P 1 and less than 100MPa, and then the radial electromagnetic force F d is 10MPa ~ 100Mpa applied to the outer edge of the flange of the composite sheet through the coil ;

步骤三、复合板料在反向压力Fp2、正向压力Fp1、径向电磁力Fd联合作用下成形,当凸模达到使复合板料成形后的行程时,即完成零件的成形;Step 3: The composite sheet is formed under the joint action of reverse pressure Fp 2 , forward pressure Fp 1 , and radial electromagnetic force F d . When the punch reaches the stroke after forming the composite sheet, the forming of the part is completed;

步骤四、成形结束后,先卸载正向液体压力P1、再卸载反向液体压力P2,凸模回程,取出成形零件,即完成一个成形过程。Step 4: After forming, unload the positive liquid pressure P 1 first, then unload the reverse liquid pressure P 2 , return the punch, take out the formed parts, and complete a forming process.

本发明具有以下有益效果:The present invention has the following beneficial effects:

一、利用本发明的装置完成异种金属复合板材电磁辅助成形方法,该方法是在板料的上下表面都施加液压的基础上,再通过线圈对复合板料的法兰外缘放电来实现的,可以根据加载曲线进行主动实时控制,使径向电磁力与正反液压力的匹配,径向压力推动板料的法兰外缘向下流动,参与凸模底部板料的积极变形,从而使拉深变形更容易进行,实现趋于均匀的应变分布,从而最大限度地提高板材的成形性能,尤其适用于异种金属复合板材。本发明的方法降低了变形区的径向拉应力,避免了破裂的产生,并形成双面流体润滑效果,使板材处于较好的变形状态而提高了其成形性。双向压力和径向力的耦合作用,延迟了复合板的牵引变形和内部空洞的形成长大,提高了其成形极限。在法兰外缘施加径向电磁力,随着径向力的增加,坯料变形区的径向拉应力降低、切向压应力增加,有利于坯料的流动、变形,避免了严重减薄。1. Utilize the device of the present invention to complete the electromagnetic-assisted forming method of dissimilar metal composite sheets. This method is based on the application of hydraulic pressure on the upper and lower surfaces of the sheets, and then realizes the discharge of the flange outer edge of the composite sheets through coils. Active real-time control can be carried out according to the loading curve, so that the radial electromagnetic force matches the positive and negative hydraulic pressure, and the radial pressure pushes the flange outer edge of the sheet to flow downward, participating in the active deformation of the sheet at the bottom of the punch, so that the pull Deep deformation is easier and achieves a strain distribution that tends to be uniform, thereby maximizing the formability of the sheet, especially for dissimilar metal composite sheets. The method of the invention reduces the radial tensile stress in the deformation zone, avoids the occurrence of cracks, and forms double-sided fluid lubrication effects, so that the plate is in a better deformation state and its formability is improved. The coupling effect of bidirectional pressure and radial force delays the traction deformation of the composite plate and the formation and growth of internal voids, and increases its forming limit. A radial electromagnetic force is applied on the outer edge of the flange. With the increase of the radial force, the radial tensile stress in the deformation zone of the billet decreases and the tangential compressive stress increases, which is beneficial to the flow and deformation of the billet and avoids serious thinning.

二、本发明可以延迟复合板材的牵引变形和界面的粘滞作用,在复合板的上、下表面形成压差,降低了变形区的径向拉应力,避免了破裂的产生,并形成双面流体润滑效果,提高了复合板的成形极限和成形件壁厚分布的均匀性。并且由于反向压力的提高使复合板材构件的贴模性、形状稳定性好,液压卸载后回弹小,尺寸精度高。2. The present invention can delay the traction deformation of the composite plate and the viscous action of the interface, form a pressure difference between the upper and lower surfaces of the composite plate, reduce the radial tensile stress in the deformation zone, avoid the occurrence of cracks, and form a double-sided The fluid lubrication effect improves the forming limit of the composite plate and the uniformity of the wall thickness distribution of the formed part. Moreover, due to the increase of the reverse pressure, the mold-fitting and shape stability of the composite plate member are good, the rebound after hydraulic unloading is small, and the dimensional accuracy is high.

三、本发明方法的成形构件的壁厚分布相对传统成形方法而言更为均匀。因此该方法可以弥补材料成形性能方面的不足,节省工序、提高效率,为异种金属复合板构件的高精度成形提供新的途径。3. The wall thickness distribution of the formed component by the method of the present invention is more uniform than that of the traditional forming method. Therefore, this method can make up for the lack of material formability, save processes, improve efficiency, and provide a new way for high-precision forming of dissimilar metal composite plate components.

附图说明Description of drawings

图1是具体实施方式一的结构主剖视图,图2是传统的充液拉深成形的原理示意图,图3是传统的径向力施加方法的示意图。Fig. 1 is a main cross-sectional view of the structure of Embodiment 1, Fig. 2 is a schematic diagram of the principle of traditional liquid-filled deep drawing, and Fig. 3 is a schematic diagram of a traditional radial force application method.

具体实施方式Detailed ways

具体实施方式一:结合图1说明本实施方式,本实施方式包括凸模1、压边圈2、密封圈3、线圈4和凹模5,所述凹模5的上端面由里向外设有凹模腔5-1和压边圈槽5-2,压边圈槽5-2的底面上设有环形线圈槽5-2-1,线圈4设置在环形线圈槽5-2-1中,压边圈2的内侧壁上设有环形密封圈槽2-2,凸模1的冲头为圆台1-1,凸模1的尾部为圆柱1-2,压边圈2套装在圆柱1-2上,且压边圈2的内壁与圆柱1-2之间设有液体通道6,密封圈3套装在圆柱1-2上且设置在环形密封圈槽3-1中,压边圈2的侧壁上横向设有上进液道2-1,凹模5的侧壁上横向设有下进液道5-3,凸模1和压边圈2位于凹模5的上方,且凸模1与凹模腔5-1正对,压边圈2与压边圈槽5-2正对。Specific embodiment 1: This embodiment is described in conjunction with FIG. 1. This embodiment includes a punch 1, a blank holder 2, a sealing ring 3, a coil 4, and a die 5. The upper end surface of the die 5 is arranged from the inside to the outside. There is a die cavity 5-1 and a blankholder groove 5-2, and the bottom surface of the blankholder groove 5-2 is provided with an annular coil groove 5-2-1, and the coil 4 is arranged in the annular coil groove 5-2-1 , the inner wall of the blank holder 2 is provided with an annular sealing ring groove 2-2, the punch of the punch 1 is a round table 1-1, the tail of the punch 1 is a cylinder 1-2, and the blank holder 2 is set on the cylinder 1 -2, and a liquid channel 6 is provided between the inner wall of the blank holder 2 and the cylinder 1-2, the sealing ring 3 is set on the cylinder 1-2 and arranged in the annular sealing ring groove 3-1, the blank holder 2 The upper liquid inlet channel 2-1 is horizontally provided on the side wall of the die 5, and the lower liquid inlet channel 5-3 is horizontally provided on the side wall of the die 5, the punch 1 and the blank holder 2 are located above the die 5, and the punch 1 is directly opposite to the die cavity 5-1, and the blank holder 2 is directly opposite to the blank holder groove 5-2.

具体实施方式二:结合图1说明本实施方式,本实施方式的上进液道2-1与下液体通道6-1上、下正对设置。其它连接关系与具体实施方式一相同。Embodiment 2: This embodiment is described with reference to FIG. 1 . In this embodiment, the upper liquid inlet channel 2-1 and the lower liquid channel 6-1 are arranged facing each other up and down. Other connection relationships are the same as those in the first embodiment.

具体实施方式三:结合图1说明本实施方式,本实施方式是通过以下步骤实现的:Specific embodiment three: illustrate this embodiment in conjunction with Fig. 1, this embodiment is realized through the following steps:

步骤一、将复合板料7放置在压边圈槽5-2的底面上,压边圈2下移至压边圈2的下端面距复合板料7的上端面0.5mm~2mm处,对压边圈2施加压边力FBH为5kN~200kN;Step 1. Place the composite sheet 7 on the bottom surface of the blankholder groove 5-2, and move the blankholder 2 down to a place where the lower end surface of the blankholder 2 is 0.5mm to 2mm away from the upper end surface of the composite sheet 7. The blank-holding force F BH applied by the blank-holding ring 2 is 5kN~200kN;

步骤二、凸模1下移到复合板料7的上表面,同时由上进液道2-1向液体通道6内施加正向液体,其正向液体压力P1为2MPa~50MPa,由下进液道5-3向凹模腔5-1内施加反向液体,其反向液体压力P2应大于1.5倍正向液体压力P1、小于100MPa(即100MPa≥P2≥P1),然后通过线圈4对复合板料7的法兰外缘施加径向电磁力Fd为10MPa~100Mpa;电磁成形是利用瞬间的高压脉冲磁场对制件进行间接或直接加工的高速率成形工艺,由于其能量易于控制,可以方便的实现实时高速成形,可以方便的实现各种工艺参数和成形过程的控制。Step 2. The punch 1 is moved down to the upper surface of the composite sheet 7, and at the same time, the positive liquid is applied from the upper liquid channel 2-1 to the liquid channel 6. The liquid channel 5-3 applies reverse liquid to the die cavity 5-1, and its reverse liquid pressure P 2 should be greater than 1.5 times the forward liquid pressure P 1 and less than 100MPa (that is, 100MPa≥P 2 ≥P 1 ), and then The radial electromagnetic force F d applied to the outer edge of the flange of the composite sheet 7 through the coil 4 is 10MPa-100Mpa; electromagnetic forming is a high-speed forming process that uses instantaneous high-voltage pulsed magnetic fields to process workpieces indirectly or directly. The energy is easy to control, real-time high-speed forming can be realized conveniently, and the control of various process parameters and forming process can be realized conveniently.

步骤三、复合板料7在反向压力Fp2、正向压力Fp1、径向电磁力Fd联合作用下成形,当凸模1达到使复合板料7成形后的行程时,即完成零件的成形;Step 3: The composite sheet 7 is formed under the joint action of the reverse pressure Fp 2 , the forward pressure Fp 1 , and the radial electromagnetic force F d . When the punch 1 reaches the stroke after the composite sheet 7 is formed, the part is completed the formation of

成形过程中,根据成形零件的形状和材料特性,可调整正向液体压力P1、反向液体压力P2和径向电磁力Fd的数值大小,以形成不同的正向压力Fp1、反向压力Fp2和径向电磁力Fd的组合;调整正向液体压力P1、反向液体压力P2和径向电磁力Fd数值的目的是为了获得最佳的工艺参数组合,即正向液体压力P1、反向液体压力P2和径向电磁力Fd之间最佳的配合关系,例如:对于材料为5A06铝合金和20号钢组成的复合板材,成形为圆筒形零件时,最佳的参数组合为正向液体压力P1=20MPa、反向液体压力P2=40MPa、径向电磁力Fd=25MPa,在此参数组合下成形后的零件壁厚的减薄率最小。During the forming process, according to the shape and material characteristics of the formed part, the values of the forward liquid pressure P 1 , the reverse liquid pressure P 2 and the radial electromagnetic force F d can be adjusted to form different forward pressure Fp 1 , reverse pressure The combination of forward pressure Fp 2 and radial electromagnetic force F d ; the purpose of adjusting the values of forward liquid pressure P 1 , reverse liquid pressure P 2 and radial electromagnetic force F d is to obtain the best combination of process parameters, that is, positive The best matching relationship between the liquid pressure P 1 , the reverse liquid pressure P 2 and the radial electromagnetic force F d , for example: for a composite plate composed of 5A06 aluminum alloy and No. 20 steel, it is formed into a cylindrical part , the best combination of parameters is forward liquid pressure P 1 =20MPa, reverse liquid pressure P 2 =40MPa, radial electromagnetic force F d =25MPa, the thinning rate of the part wall thickness after forming under this parameter combination minimum.

步骤四、成形结束后,先卸载正向液体压力P1、再卸载反向液体压力P2,凸模1回程,取出成形零件,即完成一个成形过程。Step 4: After forming, unload the positive liquid pressure P 1 first, and then unload the reverse liquid pressure P 2 , the punch 1 returns, and the formed parts are taken out, that is, a forming process is completed.

径向电磁力Fd的施加是通过嵌在凹模中的线圈4放电来实现的,可以根据加载曲线进行主动实时控制,使径向电磁力Fd与正反压力达到最佳匹配,径向电磁力Fd推动复合板料7的法兰外缘向下流动,参与凸模底部复合板料7的积极变形,从而使拉深变形更容易进行,实现趋于均匀的应变分布,从而最大限度地提高板材的成形性能,尤其适用于异种金属复合板材。The application of the radial electromagnetic force F d is realized by the discharge of the coil 4 embedded in the die, which can be actively and real-time controlled according to the loading curve, so that the radial electromagnetic force F d can achieve the best match with the positive and negative pressure. The electromagnetic force F d pushes the flange outer edge of the composite sheet 7 to flow downward, and participates in the active deformation of the composite sheet 7 at the bottom of the punch, so that the drawing deformation is easier to carry out, and the strain distribution tends to be uniform, thereby maximizing Greatly improve the formability of the sheet, especially for dissimilar metal composite sheets.

具体实施方式四:结合图1说明本实施方式,本实施方式为步骤一中的复合板料7的材质为低碳钢、铝合金、纯铝、不锈钢、铜合金、钛合金或镁合金。其他步骤与具体实施方式三相同。Embodiment 4: This embodiment is described with reference to FIG. 1 . In this embodiment, the material of the composite sheet 7 in step 1 is low carbon steel, aluminum alloy, pure aluminum, stainless steel, copper alloy, titanium alloy or magnesium alloy. Other steps are the same as those in the third embodiment.

具体实施方式五:结合图1说明本实施方式,本实施方式为步骤一中的复合板料7的厚度为1.0mm~4.0mm。其他步骤与具体实施方式三或四相同。Embodiment 5: This embodiment is described with reference to FIG. 1 . In this embodiment, the thickness of the composite sheet 7 in step 1 is 1.0 mm to 4.0 mm. Other steps are the same as those in Embodiment 3 or 4.

具体实施方式六:结合图1说明本实施方式,本实施方式为步骤一中的复合板料7的厚度为2.0mm。其他步骤与具体实施方式五相同。Embodiment 6: This embodiment is described with reference to FIG. 1 . In this embodiment, the thickness of the composite sheet 7 in step 1 is 2.0 mm. Other steps are the same as those in Embodiment 5.

具体实施方式七:结合图1说明本实施方式,本实施方式为步骤一中的复合板料7的厚度为3.0mm。其他步骤与具体实施方式五相同。Embodiment 7: This embodiment is described with reference to FIG. 1 . In this embodiment, the thickness of the composite sheet 7 in step 1 is 3.0 mm. Other steps are the same as those in Embodiment 5.

具体实施方式八:结合图1说明本实施方式,本实施方式为步骤二中由上进液道2-1向液体通道6内施加正向液体压力P1为20MPa,由下进液道5-3向凹模腔5-1内施加反向液体压力P2为30MPa,通过线圈4对复合板料7的法兰外缘施加径向电磁力Fd为50Mpa。其他步骤与具体实施方式三相同。Embodiment 8: This embodiment is described in conjunction with FIG. 1. In this embodiment, the positive liquid pressure P1 is applied to the liquid passage 6 from the upper liquid passage 2-1 in step 2. The reverse liquid pressure P2 applied to the cavity 5-1 is 30MPa, and the radial electromagnetic force Fd applied to the outer edge of the flange of the composite sheet 7 through the coil 4 is 50Mpa. Other steps are the same as those in the third embodiment.

具体实施方式九:结合图1说明本实施方式,本实施方式为步骤二中由上进液道2-1向液体通道6内施加正向液体压力P1为30MPa,由下进液道5-3向凹模腔5-1内施加反向液体压力P2为45MPa,通过线圈4对复合板料7的法兰外缘施加径向电磁力Fd为60Mpa。其他步骤与具体实施方式三相同。Nine specific embodiments: This embodiment is described in conjunction with Fig. 1. In this embodiment, in step 2, the positive liquid pressure P1 is applied to the liquid channel 6 from the upper liquid channel 2-1, and the liquid pressure P1 is 30 MPa from the lower liquid channel 5-3. The reverse liquid pressure P2 applied to the die cavity 5-1 is 45MPa, and the radial electromagnetic force Fd applied to the outer edge of the flange of the composite sheet 7 by the coil 4 is 60Mpa. Other steps are the same as those in the third embodiment.

具体实施方式十:结合图1说明本实施方式,本实施方式为步骤三中的成形过程中,密封圈3应保证在凸模1下行时上模腔的密封。其他步骤与具体实施方式三相同。Embodiment 10: This embodiment is described with reference to FIG. 1 . In this embodiment, during the forming process in step 3, the sealing ring 3 should ensure the sealing of the upper mold cavity when the punch 1 is descending. Other steps are the same as those in the third embodiment.

Claims (10)

1. dissimilar metal clad plate material electromagnetism assist formation device, it is characterized in that: described device comprises punch (1), blank holder (2), sealing ring (3), coil (4) and die (5), the upper surface of described die (5) is provided with matrix cavity (5-1) and flanging ring recess (5-2) from inside to outside, the bottom surface of flanging ring recess (5-2) is provided with toroid ring recess (5-2-1), coil (4) is arranged in the toroid ring recess (5-2-1), the madial wall of blank holder (2) is provided with ring packing ring recess (2-2), the drift of punch (1) is round platform (1-1), the afterbody of punch (1) is cylinder (1-2), blank holder (2) is sleeved on the cylinder (1-2), and be provided with fluid passage (6) between the inwall of blank holder (2) and the cylinder (1-2), sealing ring (3) is sleeved on cylinder (1-2) and goes up and be arranged in the ring packing ring recess (3-1), laterally be provided with liquid inlet channel (2-1) on the sidewall of blank holder (2), laterally be provided with down liquid inlet channel (5-3) on the sidewall of die (5), punch (1) and blank holder (2) are positioned at the top of die (5), and punch (1) and matrix cavity (5-1) over against, blank holder (2) and flanging ring recess (5-2) over against.
2. according to the described dissimilar metal clad plate material of claim 1 electromagnetism assist formation device, it is characterized in that: it is upper and lower over against setting with following fluid passage (6-1) to go up liquid inlet channel (2-1).
3. one kind is utilized the described device of claim 1 to realize dissimilar metal clad plate material electromagnetism assist formation method, and it is characterized in that: described method realizes by following steps:
Step 1, compound plate (7) is placed on the bottom surface of flanging ring recess (5-2), blank holder (2) is displaced downwardly to the lower surface of blank holder (2) apart from the upper surface 0.5mm~2mm place of compound plate (7), and it is 5kN~200kN that blank holder (2) is applied pressure-pad-force FBH;
Step 2, punch (1) move down into the upper surface of compound plate (7), simultaneously in fluid passage (6), apply forward liquid by last liquid inlet channel (2-1), its forward fluid pressure P1 is 2MPa~50MPa, in matrix cavity (5-1), apply reversed liquid by following liquid inlet channel (5-3), its reversed liquid pressure P 2 should be greater than 1.5 times of forward fluid pressure P1, less than 100MPa, and by coil (4) the flange outer rim of compound plate (7) being applied radial electromagnetic force Fd then is 10MPa~100Mpa;
Step 3, compound plate (7) are shaped under buffer brake Fp2, positive pressure Fp1, radial electromagnetic force Fd synergy, when punch (1) reaches the stroke that makes after compound plate (7) is shaped, namely finish part forming;
After step 4, the end that is shaped, unload forward fluid pressure P1 earlier, unload reversed liquid pressure P 2 again, formation of parts is taken out in punch (1) backhaul, namely finishes a forming process.
4. according to the described dissimilar metal clad plate material of claim 3 electromagnetism assist formation method, it is characterized in that: the material of the compound plate (7) in the described step 1 is mild steel, aluminium alloy, fine aluminium, stainless steel, copper alloy, titanium alloy or magnesium alloy.
5. according to claim 3 or 4 described dissimilar metal clad plate material electromagnetism assist formation methods, it is characterized in that: the thickness of the compound plate (7) in the described step 1 is 1.0mm~4.0mm.
6. according to the described dissimilar metal clad plate material of claim 5 electromagnetism assist formation method, it is characterized in that: the thickness of the compound plate (7) in the described step 1 is 2.0mm.
7. according to the described dissimilar metal clad plate material of claim 5 electromagnetism assist formation method, it is characterized in that: the thickness of the compound plate (7) in the described step 1 is 3.0mm.
8. according to the described dissimilar metal clad plate material of claim 3 electromagnetism assist formation method, it is characterized in that: applying forward fluid pressure P1 by last liquid inlet channel (2-1) in the fluid passage (6) in the described step 2 is 20MPa, apply reversed liquid pressure P 2 by following liquid inlet channel (5-3) in the matrix cavity (5-1) and be 30MPa, by coil (4) the flange outer rim of compound plate (7) being applied radial electromagnetic force Fd is 50Mpa.
9. according to the described dissimilar metal clad plate material of claim 3 electromagnetism assist formation method, it is characterized in that: applying forward fluid pressure P1 by last liquid inlet channel (2-1) in the fluid passage (6) in the described step 2 is 30MPa, apply reversed liquid pressure P 2 by following liquid inlet channel (5-3) in the matrix cavity (5-1) and be 45MPa, by coil (4) the flange outer rim of compound plate (7) being applied radial electromagnetic force Fd is 60Mpa.
10. according to the described dissimilar metal clad plate material of claim 3 electromagnetism assist formation method, it is characterized in that: in the forming process in the described step 3, sealing ring (3) should guarantee the sealing of upper cavity when punch (1) is descending.
CN2013101109064A 2013-04-01 2013-04-01 Electromagnetism-assisted forming device and method for dissimilar metal composite boards Pending CN103191971A (en)

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CN109834151A (en) * 2019-03-13 2019-06-04 中南大学 A kind of the differential temperature electromagnetic forming method and forming device of plate micropore flange
CN111299395A (en) * 2019-11-28 2020-06-19 哈尔滨理工大学 Magnetic medium auxiliary sheet blanking forming device and method
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Application publication date: 20130710