CN203459492U - Radial-axial two-way loading type metal pipe fitting electromagnetic forming device - Google Patents
Radial-axial two-way loading type metal pipe fitting electromagnetic forming device Download PDFInfo
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Abstract
本实用新型一种径向与轴向双向加载式金属管件电磁成形装置，主要包括产生感应涡流的涡流线圈、产生径向磁场的磁场线圈以及为涡流线圈和磁场线圈供电的电源系统。本实用新型实现了金属管件电磁成形过程中的径向与轴向同时加载，可调整电磁力的加载方式，满足不同的工件加工要求。本实用新型中的轴向压缩式管件电磁胀形，可有效减少管壁在胀形过程中的减薄量，提高成形工件的成形极限和成形性能。本实用新型装置可为金属管件提供不同载荷形式下的高速变形实验条件，为材料高速变形机理研究提供新的实验手段。
The utility model discloses a radial and axial two-way loading type electromagnetic forming device for metal pipe fittings, which mainly includes an eddy current coil for generating an induced eddy current, a magnetic field coil for generating a radial magnetic field, and a power supply system for supplying power to the eddy current coil and the magnetic field coil. The utility model realizes simultaneous radial and axial loading in the electromagnetic forming process of metal pipe fittings, and can adjust the loading mode of electromagnetic force to meet different workpiece processing requirements. The electromagnetic bulging of axially compressed pipe fittings in the utility model can effectively reduce the thinning amount of the pipe wall in the bulging process, and improve the forming limit and forming performance of the formed workpiece. The device of the utility model can provide metal pipe fittings with high-speed deformation experimental conditions under different load forms, and provide new experimental means for the research on the high-speed deformation mechanism of materials.
Description
技术领域 technical field
本实用新型一种径向与轴向双向加载式金属管件电磁成形装置，用于金属管件的成形加工，属于金属成形制造领域。 The utility model discloses a radial and axial bidirectional loading type electromagnetic forming device for metal pipe fittings, which is used for forming processing of metal pipe fittings and belongs to the field of metal forming and manufacturing.
背景技术 Background technique
轻量化是航空航天、汽车工业等领域实现节能减排的重要技术手段。而实现轻量化的主要途径是采用轻质合金材料，高性能铝合金、钛合金、镁合金成为现代航空航天、汽车工业等实现轻量化的首选材料。然而，轻质合金材料在室温下成形塑性较低，局部拉延性差，容易产生裂纹，回弹较大，采用传统加工工艺进行加工效果并不理想。某航天用铝质方盒零件，采用拉深成形时，需要5次拉深，期间还需增加多次退火工艺以消除加工硬化；生产周期长、成本高，且成品率较低。电磁成形是一种高速率脉冲成形技术，能大幅改善金属材料成形性能，是解决轻质合金成形困难的有效手段之一。通过电容器电源对驱动线圈放电，在驱动线圈内产生一强脉冲电流，同时在金属工件（位于驱动线圈附近）中感应涡流；线圈电流和工件涡流之间的相互电磁力，驱动金属工件加速并发生塑性变形，进而实现对工件的成形加工。整个电磁成形过程为毫秒级，电磁能瞬间释放，工件成形速度一般超过300 m/s。与传统加工工艺相比，电磁成形具有两大优势：一是高应变率（103-105s-1），可提高材料塑性变形能力，使材料成形极限提高5-10倍；二是非接触施力，成形件表面质量高，仅需要单模具，能减少变形过程中的应力集中。 Lightweight is an important technical means to achieve energy saving and emission reduction in aerospace, automobile industry and other fields. The main way to achieve lightweight is to use lightweight alloy materials. High-performance aluminum alloys, titanium alloys, and magnesium alloys have become the preferred materials for modern aerospace and automotive industries to achieve lightweight. However, light alloy materials have low forming plasticity at room temperature, poor local ductility, are prone to cracks, and have large springback. The processing effect of traditional processing technology is not ideal. An aluminum square box part for aerospace needs 5 times of deep drawing when it is formed by deep drawing. During this period, multiple annealing processes need to be added to eliminate work hardening; the production cycle is long, the cost is high, and the yield is low. Electromagnetic forming is a high-speed pulse forming technology, which can greatly improve the formability of metal materials, and is one of the effective means to solve the difficulty of forming light alloys. The drive coil is discharged through the capacitor power supply, a strong pulse current is generated in the drive coil, and an eddy current is induced in the metal workpiece (located near the drive coil); the mutual electromagnetic force between the coil current and the workpiece eddy current drives the metal workpiece to accelerate and generate Plastic deformation, and then realize the forming process of the workpiece. The entire electromagnetic forming process is at the millisecond level, the electromagnetic energy is released instantaneously, and the forming speed of the workpiece generally exceeds 300 m/s. Compared with traditional processing technology, electromagnetic forming has two advantages: one is high strain rate (10 3 -10 5 s -1 ), which can improve the plastic deformation ability of materials and increase the forming limit of materials by 5-10 times; the other is non-contact Force is applied, the surface quality of the formed part is high, and only a single mold is required, which can reduce the stress concentration in the deformation process.
电磁成形按加工工件类型，主要分为板材电磁成形和管件电磁成形。现有金属管件电磁成形技术中，电磁力通常仅为径向电磁力方向，加载方式单一，不能满足不同加工要求的加载载荷；当金属管件电磁胀形时，管件因为变形，半径增大，管壁减薄，加工工件的成形性能降低；因为加载条件的限制，目前只能研究在单一加载载荷形式下的高速变形材料特性。如U. S. patent 6，047，582，线圈与金属管件的作用力主要为径向电磁力，金属管件以径向胀形为主；U.S. patent 7540180，通过引入电磁力集中器，以电磁成形对金属管件的作用力，其电磁力仍以径向电磁力为主导。 Electromagnetic forming is mainly divided into plate electromagnetic forming and pipe electromagnetic forming according to the type of workpiece to be processed. In the existing electromagnetic forming technology of metal pipe fittings, the electromagnetic force is usually only in the direction of radial electromagnetic force, and the loading method is single, which cannot meet the loading load of different processing requirements; The wall is thinned, and the formability of the processed workpiece is reduced; because of the limitation of loading conditions, at present, only the characteristics of high-speed deformation materials under a single loading form can be studied. Such as U.S. patent 6,047,582, the force between the coil and the metal pipe is mainly radial electromagnetic force, and the metal pipe is mainly radially bulging; U.S. patent 7540180, by introducing an electromagnetic force concentrator, electromagnetic forming For the force acting on metal pipe fittings, the electromagnetic force is still dominated by radial electromagnetic force.
发明内容 Contents of the invention
本实用新型提供一种径向与轴向双向加载式金属管件电磁成形装置，可调整电磁力的加载方式，满足不同的工件加工要求。本实用新型中的轴向压缩式管件电磁胀形，可有效减少管壁在胀形过程中的减薄量，提高成形工件的成形极限和成形性能。解决目前金属管件电磁成形因加载单一而引起的问题。 The utility model provides a radial and axial two-way loading type electromagnetic forming device for metal pipe fittings, which can adjust the loading mode of electromagnetic force and meet different workpiece processing requirements. The electromagnetic bulging of axially compressed pipe fittings in the utility model can effectively reduce the thinning amount of the pipe wall in the bulging process, and improve the forming limit and forming performance of the formed workpiece. Solve the problems caused by the single loading of the current electromagnetic forming of metal pipe fittings.
本实用新型采取的技术方案为： The technical scheme that the utility model takes is:
一种金属管件电磁加工装置，包括电源系统、固定安装的涡流线圈和磁场线圈，所述涡流线圈、磁场线圈连接电源系统，所述金属管件位于涡流线圈外部并固定，磁场线圈位于金属管件的端部，开启电源系统，所述涡流线圈、磁场线圈中产生源电流，源电流在金属管件中产生感应涡流，金属管件区域产生径向磁场和轴向磁场，感应涡流与径向磁场和轴向磁场相互作用，产生轴向电磁力和径向电磁力，驱动金属工件以轴向拉伸和径向压缩的方式发生变形。所述涡流线圈连接第一电源系统，所述两个磁场线圈连接第二电源系统。 An electromagnetic processing device for metal pipe fittings, including a power supply system, a fixedly installed eddy current coil and a magnetic field coil, the eddy current coil and the magnetic field coil are connected to the power supply system, the metal pipe fitting is located outside the eddy current coil and fixed, and the magnetic field coil is located at the end of the metal pipe fitting Part, turn on the power supply system, the source current is generated in the eddy current coil and the magnetic field coil, the source current generates an induced eddy current in the metal pipe, and the metal pipe area generates a radial magnetic field and an axial magnetic field, and the induced eddy current and the radial magnetic field and the axial magnetic field Interaction, produce axial electromagnetic force and radial electromagnetic force, drive the metal workpiece to deform in the way of axial tension and radial compression. The eddy current coil is connected to the first power supply system, and the two magnetic field coils are connected to the second power supply system.
一种金属管件电磁加工装置，包括电源系统、组合线圈，组合线圈连接电源系统，金属管件位于组合线圈外部并固定，开启电源系统，组合线圈中产生源电流，源电流在金属管件中产生感应涡流，金属管件区域产生径向磁场和轴向磁场，感应涡流与径向磁场和轴向磁场相互作用，产生轴向电磁力和径向电磁力，驱动金属工件以轴向压缩和径向膨胀的方式发生变形。 An electromagnetic processing device for metal pipe fittings, including a power supply system and a combination coil, the combination coil is connected to the power supply system, the metal pipe fitting is located outside the combination coil and fixed, when the power supply system is turned on, a source current is generated in the combination coil, and the source current generates an induced eddy current in the metal pipe fitting , the metal pipe area generates a radial magnetic field and an axial magnetic field, and the induced eddy current interacts with the radial magnetic field and the axial magnetic field to generate an axial electromagnetic force and a radial electromagnetic force, which drives the metal workpiece in the form of axial compression and radial expansion deformed.
本实用新型一种径向与轴向双向加载式金属管件电磁成形装置，有益效果如下：主要包括产生感应涡流的涡流线圈、产生径向磁场的磁场线圈以及为涡流线圈和磁场线圈供电的电源系统。本实用新型实现了金属管件电磁成形过程中的径向与轴向同时加载，可调整电磁力的加载方式，满足不同的工件加工要求。 The utility model is a radial and axial two-way loading type electromagnetic forming device for metal pipe fittings. The beneficial effects are as follows: it mainly includes an eddy current coil for generating an induced eddy current, a magnetic field coil for generating a radial magnetic field, and a power supply system for supplying power to the eddy current coil and the magnetic field coil. . The utility model realizes simultaneous radial and axial loading in the electromagnetic forming process of metal pipe fittings, and can adjust the loading mode of electromagnetic force to meet different workpiece processing requirements.
此外：本实用新型中的轴向压缩式管件电磁胀形，可有效减少管壁在胀形过程中的减薄量，提高成形工件的成形极限和成形性能。 In addition: the electromagnetic bulging of the axially compressed pipe fittings in the utility model can effectively reduce the thinning of the pipe wall during the bulging process, and improve the forming limit and forming performance of the formed workpiece.
本实用新型可为金属管件提供不同载荷形式下的高速变形实验条件，为材料高速变形机理研究提供新的实验手段。 The utility model can provide high-speed deformation experiment conditions under different load forms for metal pipe fittings, and provide new experimental means for the research on the high-speed deformation mechanism of materials.
附图说明 Description of drawings
下面结合附图和实施例对本实用新型作进一步说明： Below in conjunction with accompanying drawing and embodiment the utility model is further described:
图1为本实用新型工件两端同时加载的径向与轴向双向加载式金属管件电磁成形装置示意图。 Fig. 1 is a schematic diagram of a radial and axial two-way loading type electromagnetic forming device for metal pipe fittings of the utility model with simultaneous loading at both ends of a workpiece.
其中：图1（a）为工件两端同时加载的轴向压缩式金属管件电磁胀形装置示意图； Among them: Figure 1(a) is a schematic diagram of an axially compressed metal pipe fitting electromagnetic bulging device loaded at both ends of the workpiece at the same time;
图1（b）为工件两端同时加载的轴向拉伸式金属管件电磁胀形装置示意图； Figure 1(b) is a schematic diagram of an axially stretched metal pipe fitting electromagnetic bulging device loaded simultaneously at both ends of the workpiece;
图1（c）为工件两端同时加载的轴向压缩式金属管件电磁压缩装置示意图； Figure 1(c) is a schematic diagram of an axially compressed metal pipe fitting electromagnetic compression device loaded simultaneously at both ends of the workpiece;
图1（d）为工件两端同时加载的轴向拉伸式金属管件电磁压缩装置示意图。 Figure 1(d) is a schematic diagram of an axially stretched metal pipe fitting electromagnetic compression device loaded simultaneously at both ends of the workpiece.
图2为本实用新型工件一端加载的径向与轴向双向加载式金属管件电磁成形装置示意图。 Fig. 2 is a schematic diagram of a radial and axial two-way loading type electromagnetic forming device for metal pipe fittings of the utility model, which is loaded at one end of the workpiece.
其中：图2（a）为工件一端加载的轴向压缩式金属管件电磁胀形装置示意图； Among them: Figure 2 (a) is a schematic diagram of an axially compressed metal pipe fitting electromagnetic bulging device loaded at one end of the workpiece;
图2（b）为工件一端加载的轴向拉伸式金属管件电磁胀形装置示意图； Figure 2(b) is a schematic diagram of an axially stretched metal pipe fitting electromagnetic bulging device loaded at one end of the workpiece;
图2（c）为工件一端加载的轴向压缩式金属管件电磁压缩装置示意图； Figure 2(c) is a schematic diagram of an axial compression metal pipe fitting electromagnetic compression device loaded at one end of the workpiece;
图2（d）为工件一端加载的轴向拉伸式金属管件电磁压缩装置示意图。 Figure 2(d) is a schematic diagram of an axially stretched metal pipe fitting electromagnetic compression device loaded at one end of the workpiece.
图3为本实用新型涡流线圈与磁场线圈采用不同电源系统供电示意图。 Fig. 3 is a schematic diagram of power supply by different power supply systems for the eddy current coil and the magnetic field coil of the present invention.
其中：图3（a）为涡流线圈与磁场线圈采用同一电源系统串联供电示意图； Among them: Figure 3 (a) is a schematic diagram of the eddy current coil and the magnetic field coil using the same power system for power supply in series;
图3（b）为涡流线圈与磁场线圈采用同一电源系统并联供电示意图； Figure 3(b) is a schematic diagram of the parallel power supply of the eddy current coil and the magnetic field coil using the same power system;
图3（c）为涡流线圈与磁场线圈采用不同电源系统单独供电示意图。 Figure 3(c) is a schematic diagram of separate power supply for the eddy current coil and the magnetic field coil using different power supply systems.
图4为本实用新型组合线圈示意图。 Fig. 4 is a schematic diagram of the combined coil of the present invention.
其中：图4（a）为用于工件一端加载的轴向压缩式金属管件电磁胀形的组合线圈示意图； Among them: Figure 4(a) is a schematic diagram of the combined coil for electromagnetic bulging of axially compressed metal pipe fittings loaded at one end of the workpiece;
图4（b）为用于工件一端加载的轴向压缩式金属管件电磁压缩的组合线圈示意图。 Fig. 4(b) is a schematic diagram of a combined coil for electromagnetic compression of an axially compressed metal pipe fitting loaded at one end of the workpiece.
其中：1为源电流；2为感应涡流；3为径向磁场；4为轴向电磁力；5为涡流线圈；6为磁场线圈；7为金属管件；8-1为第一电源系统；8-2为第二电源系统；9为组合线圈。 Among them: 1 is the source current; 2 is the induced eddy current; 3 is the radial magnetic field; 4 is the axial electromagnetic force; 5 is the eddy current coil; 6 is the magnetic field coil; 7 is the metal pipe fitting; 8-1 is the first power supply system; 8 -2 is the second power supply system; 9 is the combined coil.
具体实施方式 Detailed ways
一种加工金属管件电磁成形方法，利用源电流1在金属管件7中产生感应涡流2，同时在金属管件7区域内产生径向磁场3和轴向磁场。径向磁场3与感应涡流2相互作用产生轴向电磁力4作用于金属管件7，轴向磁场与感应涡流2相互作用产生径向电磁力作用于金属管件7。金属管件7在轴向电磁力4的作用下发生轴向变形，同时在径向电磁力的作用下发生径向变形。源电流1为脉冲源电流。 An electromagnetic forming method for processing metal pipe fittings, using a source current 1 to generate an induced eddy current 2 in a metal pipe fitting 7, and simultaneously generating a radial magnetic field 3 and an axial magnetic field in the area of the metal pipe fitting 7. The interaction between the radial magnetic field 3 and the induced eddy current 2 produces an axial electromagnetic force 4 that acts on the metal pipe 7 , and the interaction between the axial magnetic field and the induced eddy current 2 produces a radial electromagnetic force that acts on the metal pipe 7 . The metal pipe fitting 7 undergoes axial deformation under the action of the axial electromagnetic force 4, and at the same time undergoes radial deformation under the action of the radial electromagnetic force. Source current 1 is a pulsed source current.
上述金属管件电磁成形方法包括以下四种不同类型的成形方法： The above electromagnetic forming methods for metal pipe fittings include the following four different types of forming methods:
a、轴向压缩式管件电磁胀形：在金属管件7轴向施加电磁压缩力和径向施加电磁胀力， a. Electromagnetic bulging of axially compressed pipe fittings: apply electromagnetic compressive force in the axial direction and radially apply electromagnetic expansion force on the metal pipe fitting 7,
b、轴向压缩式管件电磁压缩：在金属管件7轴向施加电磁压缩力和径向施加电磁压力； b. Electromagnetic compression of axial compression pipe fittings: apply electromagnetic compression force and radial electromagnetic pressure to the metal pipe fitting 7 in the axial direction;
c、轴向拉伸式管件电磁胀形：在金属管件7轴向施加电磁拉伸力和径向施加电磁胀力； c. Electromagnetic bulging of axially stretched pipe fittings: apply electromagnetic stretching force and radial force to the metal pipe 7 in the axial direction;
d、轴向拉伸式管件电磁压缩：在金属管件7轴向施加电磁拉伸力和径向施加电磁压力。 d. Electromagnetic compression of axially stretched pipe fittings: apply electromagnetic tension and radial electromagnetic pressure to the metal pipe 7 in the axial direction.
所述感应涡流2和径向磁场3的产生时间保持同步。 The generation time of the induced eddy current 2 and the radial magnetic field 3 are synchronized.
所述径向磁场3与感应涡流2相互作用产生的轴向电磁力4是轴向压缩电磁力或轴向电磁拉伸力。 The axial electromagnetic force 4 generated by the interaction between the radial magnetic field 3 and the induced eddy current 2 is an axial compressive electromagnetic force or an axial electromagnetic tensile force.
所述轴向电磁力4可以只作用于金属管件7的一端，或同时作用于金属管件7的两端。 The axial electromagnetic force 4 can only act on one end of the metal pipe 7 , or act on both ends of the metal pipe 7 at the same time.
本实用新型一种径向与轴向双向加载式金属管件电磁成形装置主要包括产生感应涡流2的涡流线圈5；产生径向磁场的磁场线圈6以及为涡流线圈5和磁场线圈6供电的第一电源系统8-1和第二电源系统8-2。第一电源系统8-1和第二电源系统8-2可在涡流线圈5和磁场线圈中6产生脉冲源电流，脉冲源电流在金属管件7中产生感应涡流2，同时在金属管件7区域内产生径向磁场3。 The utility model is a radial and axial two-way loading type electromagnetic forming device for metal pipe fittings, which mainly includes an eddy current coil 5 for generating an induced eddy current 2; A power supply system 8-1 and a second power supply system 8-2. The first power supply system 8-1 and the second power supply system 8-2 can generate a pulse source current in the eddy current coil 5 and the magnetic field coil 6, and the pulse source current generates an induced eddy current 2 in the metal pipe 7, and simultaneously in the metal pipe 7 area Generate a radial magnetic field 3 .
实施例1： Example 1:
一种金属管件电磁加工装置，包括电源系统、固定安装的涡流线圈5和两个磁场线圈6，所述涡流线圈5、两个磁场线圈6连接电源系统，所述涡流线圈5位于两个磁场线圈6中间位置，金属管件7位于涡流线圈5外部并固定，两个磁场线圈6分别位于金属管件7的两个端部。开启电源系统，所述涡流线圈5、磁场线圈6中产生源电流1，源电流1在金属管件7中产生感应涡流2，金属管件7区域产生径向磁场3和轴向磁场，感应涡流2与径向磁场3和轴向磁场相互作用，产生轴向电磁力4和径向电磁力，驱动金属工件7以轴向拉伸和径向压缩的方式发生变形，完成金属管件7的加工。 An electromagnetic processing device for metal pipe fittings, including a power supply system, a fixedly installed eddy current coil 5 and two magnetic field coils 6, the eddy current coil 5 and the two magnetic field coils 6 are connected to the power supply system, and the eddy current coil 5 is located between the two magnetic field coils 6 In the middle position, the metal pipe 7 is located outside the eddy current coil 5 and fixed, and the two magnetic field coils 6 are respectively located at the two ends of the metal pipe 7. Turn on the power supply system, the eddy current coil 5 and the magnetic field coil 6 generate a source current 1, the source current 1 generates an induced eddy current 2 in the metal pipe 7, and the metal pipe 7 area generates a radial magnetic field 3 and an axial magnetic field, and the induced eddy current 2 and the The radial magnetic field 3 interacts with the axial magnetic field to generate axial electromagnetic force 4 and radial electromagnetic force, which drive the metal workpiece 7 to deform in the form of axial stretching and radial compression, and complete the processing of the metal pipe fitting 7 .
涡流线圈5和磁场线圈6可以采用同一电源系统串联或并联供电，或采用不同电源系统分别供电。采用不同电源系统供电时，所述涡流线圈5连接第一电源系统8-1，所述两个磁场线圈6连接第二电源系统8-2。采用相应的控制系统，使得涡流线圈5产生的感应涡流2和磁场线圈6产生的径向磁场时间保持同步。 The eddy current coil 5 and the magnetic field coil 6 can be powered by the same power system in series or in parallel, or by different power systems. When different power supply systems are used for power supply, the eddy current coil 5 is connected to the first power supply system 8-1, and the two magnetic field coils 6 are connected to the second power supply system 8-2. A corresponding control system is adopted to keep the time of the induced eddy current 2 generated by the eddy current coil 5 and the radial magnetic field generated by the magnetic field coil 6 synchronized.
实施例2： Example 2:
一种金属管件电磁加工装置，包括电源系统、组合线圈9，组合线圈9连接电源系统，金属管件7位于组合线圈9外部并固定，开启电源系统，组合线圈9中产生源电流1，源电流1在金属管件7中产生感应涡流2，金属管件7区域产生径向磁场3和轴向磁场，感应涡流2与径向磁场3和轴向磁场相互作用，产生轴向电磁力4和径向电磁力，驱动金属工件7以轴向压缩和径向膨胀的方式发生变形，完成金属管件7的加工。 An electromagnetic processing device for metal pipe fittings, including a power supply system, a combined coil 9, the combined coil 9 is connected to the power supply system, the metal pipe 7 is located outside the combined coil 9 and fixed, the power supply system is turned on, and the combined coil 9 generates a source current 1, a source current 1 The induced eddy current 2 is generated in the metal pipe 7, and the area of the metal pipe 7 generates a radial magnetic field 3 and an axial magnetic field, and the induced eddy current 2 interacts with the radial magnetic field 3 and the axial magnetic field to generate an axial electromagnetic force 4 and a radial electromagnetic force , drive the metal workpiece 7 to deform in the manner of axial compression and radial expansion, and complete the processing of the metal pipe 7 .
实施例3： Example 3:
金属工件7需整体胀形加工时，可以采用图1（a）所示的工件两端同时加载轴向压缩式管件电磁胀形装置或图1（b）所示的两端同时加载轴向拉伸式金属管件电磁胀形装置，在金属工件7两端同时加载轴向电磁力加工工件。 When the metal workpiece 7 needs overall bulging processing, the axial compression type electromagnetic bulging device for simultaneous loading of both ends of the workpiece as shown in Figure 1 (a) or the simultaneous loading of axial tension at both ends as shown in Figure 1 (b) can be used. The electromagnetic bulging device for stretching metal pipe fittings simultaneously loads axial electromagnetic force on both ends of the metal workpiece 7 to process the workpiece.
实施例4： Example 4:
金属工件7只需一端胀形加工时，可以采用图2（a）所示的工件一端加载轴向压缩式金属管件电磁胀形装置或图2（b）所示的一端加载轴向拉伸式金属管件电磁胀形装置，在金属工件7一端加载轴向电磁力加工工件。 When only one end of the metal workpiece 7 is bulging, the electromagnetic bulging device of one end of the workpiece loaded with axial compression as shown in Figure 2 (a) or the axial tension type of one end of the load shown in Figure 2 (b) can be used. An electromagnetic bulging device for metal pipe fittings loads an axial electromagnetic force on one end of the metal workpiece 7 to process the workpiece.
实施例5： Example 5:
金属工件7需整体压缩加工时，可以采用图1（c）所示的工件两端同时加载轴向压缩式管件电磁压缩装置或图1（d）所示的两端同时加载轴向拉伸式金属管件电磁压缩装置，在金属工件7两端同时加载轴向电磁力加工工件。 When the metal workpiece 7 needs to be compressed and processed as a whole, the axial compression type electromagnetic compression device for both ends of the workpiece as shown in Figure 1 (c) or the axial tension type for simultaneous loading of both ends as shown in Figure 1 (d) can be used. The electromagnetic compression device for metal pipe fittings simultaneously loads axial electromagnetic force on both ends of the metal workpiece 7 to process the workpiece.
实施例6： Embodiment 6:
金属工件7只需一端压缩加工时，可以采用图2（c）所示的工件一端加载轴向压缩式金属管件电磁压缩装置或图2（d）所示的一端加载轴向拉伸式金属管件电磁压缩装置，在金属工件7一端加载轴向电磁力加工工件。 When only one end of the metal workpiece 7 needs to be compressed and processed, the electromagnetic compression device of axially compressed metal pipe fittings loaded on one end of the workpiece as shown in Figure 2(c) or the axially stretched metal pipe fittings loaded on one end as shown in Figure 2(d) can be used The electromagnetic compression device loads an axial electromagnetic force on one end of the metal workpiece 7 to process the workpiece.
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