Multi-mode metal cold welding repairing and strengthening equipment

Abstract

The utility model relates to the field of metal surface repairing and strengthening, in particular to multi-mode metal cold welding repairing and strengthening equipment. A control part of the equipment is composed of a main control circuit, an ESD voltage regulating circuit and a cold arc transition welding voltage regulating circuit, the main control circuit is a central processing unit, and the ESD voltage regulating circuit and the cold arc transition welding voltage regulating circuit are auxiliary processors. The output end of the main control circuit is connected with the ESD waveform generator, the ESD voltage regulating circuit, the cold arc transition welding voltage regulating circuit, the cold arc transition welding waveform generator, the high-frequency arc starter and the gas protection system, and the main control circuit controls the ESD voltage regulating circuit and the cold arc transition welding voltage regulating circuit. The output end of the ESD voltage regulating circuit and the output end of the cold arc transition welding voltage regulating circuit are connected with the ESD energy storage capacitor, the electronic switch and the cold arc transition welding energy storage capacitor through the dual-power-supply system. According to the utility model, the mode switching of cold arc transition welding, ESD welding and patch welding is realized, and the welding repair work in different scenes is met.

Description

Technical Field

[0001] The utility model relates to the field of metal surface repair and strengthening, in particular to a multi-mode metal cold welding repair and strengthening device which integrates multiple cold welding functions to achieve metal surface welding repair and strengthening. Background Art

[0002] In the process of rapid development of modern industry, various mechanical equipment often cannot operate normally due to wear or corrosion, causing economic losses. Therefore, in order to increase the life of mechanical equipment and promote economic cycle development, it is urgent to repair the failed mechanical equipment. Common methods for metal surface repair include electroplating, thermal spraying, laser cladding and cold welding. However, the brush plating coating of the brush plating process is limited by the amount of wear, and when the brush plating layer is thick, the bonding force between the substrate and the coating is low and it is easy to fall off; the spray coating is prone to defects such as pores, and the bonding strength is not high; the laser cladding equipment has a large investment and is prone to pores and embrittlement.

[0003] Traditional cold welding machines use single-function cold arc transition welding, ESD welding and patch welding. When multiple cold welding functions are required for on-site repair, the equipment is inconvenient to carry. Among them, the cold arc transition welding repair process is to release the electrical energy stored in the capacitor between the tungsten electrode and the workpiece in an instant in the form of a pulse arc. The high-temperature arc causes the workpiece and the welding wire composed of metal materials to melt rapidly and fuse together to achieve the purpose of welding repair. ESD welding refers to the welding process of electrospark deposition (ELECTRO SPARK DEPOSITION). The high-energy electrical energy stored in the capacitor is instantly released at high frequency between the high-speed rotating metal electrode and the base material, and multiple micro-arc channels are formed through gas ionization, so that instantaneous high-temperature micro-areas are generated on the surface of the base material. The electrode material is melted to the base material matrix under the action of the micro-electric field to form a metallurgical bond. Patch welding refers to the welding process of patch components, which is divided into manual welding and machine welding. Therefore, a metal cold welding equipment that integrates multiple functions plays an important role in improving the quality and efficiency of repair and effectively reducing equipment costs. Utility Model Content

[0004] The purpose of the utility model is to provide a multi-mode metal cold welding repair and strengthening equipment to solve the problems of weak bonding between the substrate and the coating, easy deformation, multiple equipment and large investment in existing repair technologies. It is suitable for online repair in complex environments, is portable and improves the repair quality and efficiency.

[0005] The technical solution of the utility model is:

[0006] A multi-mode metal cold welding repair and strengthening equipment, the control system of the equipment includes a control part and a dual power supply system, the control part is composed of a main control circuit, an ESD voltage regulating circuit and a cold arc transition welding voltage regulating circuit, the main control circuit is a central processing unit, the ESD voltage regulating circuit and the cold arc transition welding voltage regulating circuit are auxiliary processors, the output end of the main control circuit is respectively connected with an ESD waveform generator, an ESD voltage regulating circuit, a cold arc transition welding voltage regulating circuit, a cold arc transition welding waveform generator, a high-frequency arc starter, and a gas protection system, the main control circuit controls the ESD voltage regulating circuit and the cold arc transition welding voltage regulating circuit respectively, the output ends of the ESD voltage regulating circuit and the cold arc transition welding voltage regulating circuit are connected with an ESD energy storage capacitor, an electronic switch and a cold arc transition welding energy storage capacitor through the dual power supply system, and the electronic switch is arranged between the dual power supply system and the workpiece.

[0007] The multi-mode metal cold welding repair and strengthening equipment has a dual power supply system that supplies power to the ESD energy storage capacitor and the cold arc transition welding energy storage capacitor respectively.

[0008] The multi-mode metal cold welding repair and strengthening equipment, the cold arc transition welding energy storage capacitor, the cold arc transition welding waveform generator, and the high-frequency arc starter are all connected to the cold arc transition welding power amplifier, the output end of the cold arc transition welding power amplifier is respectively connected to the cold arc transition welding deposition welding gun and the patch welding gun, the gas protection system corresponds to the cold arc transition welding deposition welding gun and the patch welding gun respectively, and the high-frequency arc starter completes the welding of the workpiece via the output of the cold arc transition welding deposition welding gun or the patch welding gun; the ESD energy storage capacitor and the ESD waveform generator are connected to the ESD power amplifier, the output end of the ESD power amplifier is connected to the ESD deposition welding gun, the gas protection system provides argon protection corresponding to the ESD deposition welding gun, and the ESD energy storage capacitor completes the welding of the workpiece via the ESD deposition welding gun.

[0009] The multi-mode metal cold welding repair and strengthening equipment described herein has a control panel connected to the control part, which is composed of a digital display, a function parameter adjustment control panel, a discharge electrode and a shielding gas output part. The input parameters are displayed online in real time through the digital display, and different functions are switched and selected through the function parameter adjustment control panel. The output ends of the cold arc transition welding power amplifier and the ESD power amplifier are connected to three discharge electrodes, namely, a cold arc transition welding electrode, an ESD welding electrode and a patch welding electrode. The cold arc transition welding power amplifier is connected to the discharge electrode of the cold arc transition welding deposition welding gun, and the ESD power amplifier is connected to the discharge electrode of the patch welding gun and the discharge electrode of the ESD deposition welding gun. The main control circuit controls the shielding gas output part of the gas protection system.

[0010] The multi-mode metal cold welding repair and strengthening equipment, the digital display area includes a cold arc transition welding / chip welding pulse current display part, a cold arc transition welding / chip welding pulse time display part, a cold arc transition welding / chip welding pulse voltage display part, an ESD pulse number display part, an ESD pulse frequency display part, and an ESD pulse voltage display part, and the function parameter adjustment control panel area includes a chip welding key, a spot welding / continuous welding switching key, a thin part A key, a thin part B key, an Al / Cu / Ti key, a Fe / Ni key, a single pulse key, and a micro-group wave key.

[0011] The multi-mode metal cold welding repair and strengthening equipment, the cold arc transition welding deposition welding gun, the patch welding welding gun, and the ESD deposition welding gun of the equipment correspond to the three cold welding methods of cold arc transition welding, ESD welding and patch welding respectively.

[0012] The multi-mode metal cold welding repair and strengthening equipment has four welding mode options under the cold arc transition welding mode, which are thin part A, thin part B, Al / Cu / Ti and Fe / Ni. The four modes are preset with optimized parameters and can switch between spot welding and continuous welding with one button. Micro-controlled waveform control is used, 1 to 8 micro-group waves are preset, and the pulse interval time of the multi-pulse mode is set to 300μs; under the ESD welding mode, there are two mode options: single pulse and micro-group wave.

[0013] The multi-mode metal cold welding repair and strengthening equipment has a dual power supply system output end connected to an ESD energy storage capacitor via a DC 140V voltage. The ESD energy storage capacitor is composed of three energy storage capacitors C1, C2, and C3 and diodes D3 and D4 connected in parallel. One path of the ESD energy storage capacitor is connected to an ESD deposition welding gun via a resistor, an inductor, a diode, and a pulse width modulated transient suppression diode KD in sequence. The resistor, the inductor, and the diode form two sets of parallel structures. The other path of the ESD energy storage capacitor is connected to the workpiece via an electronic switch.

[0014] The multi-mode metal cold welding repair and strengthening equipment described herein has a dual power supply system output end connected to a cold arc transition welding energy storage capacitor via a DC voltage of 42 to 56V. The cold arc transition welding energy storage capacitor is formed by four energy storage capacitors connected in parallel. One path of the cold arc transition welding energy storage capacitor is provided with two branches, one branch is connected to the workpiece via an electronic switch, and the other branch is connected to the SMD welding gun via a fast recovery diode D; another path of the cold arc transition welding energy storage capacitor is connected to a pulse width modulation via a MOS field effect transistor connected in parallel to the fast recovery diode D, and one path of the cold arc transition welding energy storage capacitor is connected to a cold arc transition welding deposition gun via a line via the output end of the fast recovery diode D, and a transformer T1 connected to a high voltage generator is provided on the line.

[0015] The advantages and beneficial effects of the utility model are:

[0016] 1. This practical multi-mode metal cold welding repair and strengthening equipment integrates three cold welding methods: cold arc transition welding, ESD and patch welding. There are multiple modes to choose from under each welding method. Spot welding and continuous welding can be switched with one key. It has a wide energy output range, can perform precision welding and high-power welding, has a wide parameter adjustment range, and has high repair efficiency. Therefore, it meets the welding requirements in different welding environments, and the equipment is easy to carry and has comprehensive functions.

[0017] 2. During the use of the two modes of cold arc transition welding and ESD, the pulse voltage, current and time can be adjusted arbitrarily within a certain range to meet the welding repair work in different scenarios, thereby restoring the metal surface shape and performance and achieving the purpose of strengthening to a certain extent. The utility model plays a vital role in improving the repair quality and efficiency and effectively reducing the equipment cost.

[0018] 3. The utility model has preset optimized parameters in each mode of the multi-mode metal cold welding repair and strengthening equipment, which can be used under certain conditions, making it convenient for welding workers to use, providing an effective reference for the welding process, and improving the welding quality and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is the control principle diagram of the multi-mode metal cold welding repair and strengthening equipment system of the utility model.

[0020] Figure 2 This is a structural diagram of the control panel of the multi-mode metal cold welding repair and strengthening equipment of the utility model.

[0021] Figure 3 This is the circuit diagram of the power amplifier output part of the multi-mode metal cold welding repair and enhancement equipment of the utility model.

[0022] Figure 2 In: 1. SMD welding key; 2. Spot welding / continuous welding switching key; 3. Thin part A key; 4. Thin part B key; 5. Al / Cu / Ti key; 6. Fe / Ni key; 7. Cold arc transition welding / SMD welding pulse current display part; 8. Cold arc transition welding / SMD welding pulse time display part; 9. Cold arc transition welding / SMD welding pulse voltage display part; 10. Single pulse key; 11. Micro-group wave key; 12. ESD pulse number display part; 13. ESD pulse frequency display part; 14. ESD pulse voltage display part; 15. Cold arc transition welding deposition gun; 16. SMD welding gun; 17. ESD deposition gun; 18. Shielding gas output part; 19. Parameter size adjustment area; 20. Workpiece. DETAILED DESCRIPTION

[0023] like Figure 1As shown, the utility model proposes a multi-mode metal cold welding repair and strengthening equipment, the control system of the equipment is mainly composed of a control part, a dual power supply system and an output part, wherein: the control part is composed of a main control circuit, an ESD voltage regulating circuit and a cold arc transition welding voltage regulating circuit, the main control circuit is a central processing unit (CPU), the ESD voltage regulating circuit and the cold arc transition welding voltage regulating circuit are auxiliary processors (CPU), the output end of the main control circuit is respectively connected to the ESD waveform generator, the ESD voltage regulating circuit, the cold arc transition welding voltage regulating circuit, the cold arc transition welding waveform generator, a high-frequency arc starter, and a gas protection system, the main control circuit controls the ESD voltage regulating circuit and the cold arc transition welding voltage regulating circuit respectively, the output ends of the ESD voltage regulating circuit and the cold arc transition welding voltage regulating circuit are connected to the ESD energy storage capacitor, the electronic switch and the cold arc transition welding energy storage capacitor through the dual power supply system, the electronic switch is arranged between the dual power supply system and the workpiece, and the function of the electronic switch is to realize the conversion of cold arc transition welding and ESD welding functions. The first cold arc transition welding energy storage capacitor, cold arc transition welding waveform generator, and high-frequency arc starter are all connected to the cold arc transition welding power amplifier. The output end of the cold arc transition welding power amplifier is respectively connected to the cold arc transition welding deposition welding gun and the patch welding gun. The gas protection system provides argon protection corresponding to the cold arc transition welding deposition welding gun and the patch welding gun. The high-frequency arc starter completes the welding of the workpiece through the output of the cold arc transition welding deposition welding gun or the patch welding gun. The second ESD energy storage capacitor and ESD waveform generator are connected to the ESD power amplifier. The output end of the ESD power amplifier is connected to the ESD deposition welding gun. The gas protection system provides argon protection corresponding to the ESD deposition welding gun. The ESD energy storage capacitor completes the welding of the workpiece through the ESD deposition welding gun. The dual power supply system supplies power to the ESD energy storage capacitor and the cold arc transition welding energy storage capacitor respectively. The cold arc transition welding waveform generator is used for the generation and pulse width adjustment of the cold arc transition welding waveform, and the ESD waveform generator is used for the generation and frequency adjustment of the ESD waveform.

[0024] like Figure 2 As shown, in the multi-mode metal cold welding repair and strengthening equipment of the utility model, the control panel connected to the control part is mainly composed of a digital display, a function parameter adjustment control panel, a discharge electrode and a shielding gas output part, etc. The digital display is responsible for the real-time online display of the input parameters, the function parameter adjustment control panel is responsible for the switching and selection of different functions, the output ends of the cold arc transition welding power amplifier and the ESD power amplifier are connected to three discharge electrodes, namely, the cold arc transition welding electrode, the ESD welding electrode and the patch welding electrode, the cold arc transition welding power amplifier is connected to the discharge electrode of the cold arc transition welding deposition welding gun 15, the ESD power amplifier is connected to the discharge electrode of the patch welding welding gun 16 and the discharge electrode of the ESD deposition welding gun 17, and the main control circuit controls the shielding gas output part 18 of the gas protection system.

[0025] The digital display area includes a cold arc transition welding / chip welding pulse current display part 7, a cold arc transition welding / chip welding pulse time display part 8, a cold arc transition welding / chip welding pulse voltage display part 9, an ESD pulse number display part 12, an ESD pulse frequency display part 13, and an ESD pulse voltage display part 14. This area is a parameter display area, which is responsible for the real-time display of input parameters;

[0026] The function parameter adjustment control panel area includes the patch welding key 1, the spot welding / continuous welding switching key 2, the thin part A key 3, the thin part B key 4, the Al / Cu / Ti key 5, the Fe / Ni key 6, the single pulse key 10, the micro-group wave key 11 and other function keys. The function of the thin part A key 3 is suitable for welding workpieces with a thickness of 0.2 to 1 mm, the function of the thin part B key 4 is suitable for welding workpieces with a thickness of 1 to 3 mm, the function of the Al / Cu / Ti key 5 is suitable for welding aluminum alloys, copper alloys and titanium alloys, the function of the Fe / Ni key 6 is suitable for welding iron-based alloys and nickel-based alloys, and the function of the micro-group wave key 11 is to adjust the number of pulses per unit time. The micro-group wave adopts advanced technology, uses micro-controlled waveform control, fully digital control of precise parameters, and uses special dual power supply time-sharing control. The repair accuracy and speed are several times that of ordinary micro-arc welding;

[0027] The output part includes a cold arc transition welding deposition welding gun 15, a patch welding gun 16, an ESD deposition welding gun 17, a shielding gas output part 18, and a parameter size adjustment area 19. The cold arc transition welding deposition welding gun 15, the patch welding gun 16, the ESD deposition welding gun 17, and the shielding gas output part 18 as the output end output welding electrodes and shielding gas; the parameter size adjustment area 19 is provided with a parameter size adjustment key to control the selection, switching and parameter size adjustment of the equipment welding function.

[0028] The utility model multi-mode metal cold welding repair and strengthening equipment realizes multiple optional functions through the control panel, and presets multiple optimization parameters. The parameters can be accurately adjusted within a certain range. The system is stable and reliable, improves the welding efficiency, and can realize online repair and strengthening of the metal surface under different environments. The equipment has three cold welding modes: cold arc transition welding, ESD and patch welding, and there are multiple modes to choose from in each welding mode. In the cold arc transition welding mode, there are four welding modes to choose from, and the four modes are thin parts A, thin parts B, Al / Cu / Ti and Fe / Ni. The four modes are preset with optimization parameters (such as pulse current, pulse frequency and pulse voltage) and can switch between spot welding and continuous welding with one key. The pulse current and time can be adjusted arbitrarily within a certain range. In the ESD welding mode, there are two modes of single pulse and micro-group wave to choose from, and there are three powers that can be switched; during the use of the ESD welding mode, the number of pulses, frequency and voltage can be adjusted arbitrarily within a certain range; in the ESD welding mode, micro-control waveform control is used, 1 to 8 micro-group waves are preset and optional, and the pulse interval time of the multi-pulse mode is set to 300μs. In the SMD welding mode, the pulse current, pulse frequency and pulse voltage are preset with optimized parameters.

[0029] like Figure 3 As shown, the utility model adopts a dual power supply system to provide a 40-140V continuously adjustable DC power supply, which is filtered by RLC to become a stable DC power supply for charging and discharging the energy storage capacitor. The filter capacitor has a large capacity, generally above C3300μF, so an electrolytic capacitor is used.

[0030] The output end of the dual power supply system is connected to the ESD energy storage capacitor through a DC 140V voltage. The ESD energy storage capacitor is composed of several energy storage capacitors C1, C2, C3 and diodes D3 and D4 in parallel. One path of the ESD energy storage capacitor is connected to the ESD deposition welding gun through resistors, inductors, diodes, and transient suppression diodes KD of pulse width modulation (PWM control 2) in sequence. The resistors, inductors, and diodes are two groups of parallel structures (one group is resistor R1, inductor L1, diode D1, and the other group is resistor R2, inductor L2, diode D2). The other path of the ESD energy storage capacitor is connected to the workpiece through an electronic switch; the control signal sent by the main control circuit controls the on and off, and different capacitance combinations are obtained. The discharge intensity is adjusted by changing the capacitance. The energy storage capacitor uses a low dielectric capacitor of 100 to 200μF. When not working, the energy storage capacitor is charged and the voltage reaches the peak value after rectification. When working, the voltage on the energy storage capacitor is pulse-type, and its pulse frequency depends on the main control circuit, which triggers the ESD waveform generator to generate a waveform and triggers the single-phase thyristor K50 deposition circuit. In the ESD deposition welding gun, the motor drives the welding needle (tool electrode) to rotate. When the welding needle of the ESD deposition welding gun contacts the workpiece 20 to be processed, the entire system constitutes a discharge circuit, and the energy storage capacitor of the ESD energy storage capacitor begins to discharge. The argon gas source device of the gas protection system 18 automatically supplies gas to the working chamber under the control of the electromagnetic relay, and spark discharge is generated between the welding needle and the workpiece 20, melting the electrode material into the surface of the workpiece 20.

[0031] The output end of the dual power supply system is connected to the cold arc transition welding energy storage capacitor through a DC voltage of 42-56V. The cold arc transition welding energy storage capacitor is formed by connecting four energy storage capacitors in parallel. One of the cold arc transition welding energy storage capacitors is provided with two branches, one branch is connected to the workpiece through an electronic switch, and the other branch is connected to the patch welding gun through a fast recovery diode D; the other branch of the cold arc transition welding energy storage capacitor is connected to the pulse width modulation (PWM control 1) through a MOS field effect tube connected in parallel to the fast recovery diode D, and one of the cold arc transition welding energy storage capacitors is connected to the cold arc transition welding deposition welding gun through a line through the output end of the fast recovery diode D, and a transformer T1 connected to a high-voltage generator is provided on the line; the cold arc transition welding energy storage capacitor is an electrolytic capacitor, which stores charge by establishing an electric field between the two polar plates of the capacitor. After the capacitor is charged and stored, the high-power MOS field effect tube is controlled to be turned on by a single-chip trigger signal, so as to discharge rapidly. Since the high-power MOS field effect tube generates reverse pressure when it is turned on, it is protected from overvoltage by a fast recovery diode. The ESD energy storage capacitor uses a non-polar CBB capacitor group, and the power adjustment switch controls the number of capacitors in parallel, thereby adjusting the discharge power. The charging and discharging process of the energy storage capacitor is controlled by the electronic switch circuit of the main control circuit to obtain a stable discharge pulse. The DC42~56V voltage is provided by the dual power supply system, and the 4 parallel energy storage capacitors are charged and discharged. The capacitance is above 82000μF. The main control circuit controls the opening and closing of the insulated gate bipolar transistor (IGBT) to control the on-off of the circuit. The main control circuit controls the conversion of different modes, and the welding of the workpiece 20 is completed by the high-frequency arc starter.

[0032] The working principle of the utility model is: by selecting the function of the control panel and the corresponding output electrode, the preset parameters are accurately selected and can be adjusted within a certain range, so as to realize online repair and strengthening of the metal surface under different environments. The workpiece will not be deformed during the repair process, the heat-affected zone is small, and the required performance can be achieved.

[0033] The implementation results show that the utility model is a repair and strengthening equipment that can perform high-tight welding and high-power welding on metal surfaces at the same time. It has three cold welding methods: cold arc transition welding, ESD and patch welding, which can be switched at will. At the same time, there are multiple modes to choose from under each welding method. It solves the problems of part deformation caused by large welding heat affected zone, difficulty in selecting welding parameters for non-professionals, and the problem of requiring many equipments when choosing multiple cold welding methods.

Claims

1. A multi-mode metal cold welding repair and strengthening device, characterized in that: The control system of the equipment includes a control part and a dual power supply system. The control part is composed of a main control circuit, an ESD voltage regulating circuit and a cold arc transition welding voltage regulating circuit. The main control circuit is a central processing unit, and the ESD voltage regulating circuit and the cold arc transition welding voltage regulating circuit are auxiliary processors. The output end of the main control circuit is respectively connected with the ESD waveform generator, the ESD voltage regulating circuit, the cold arc transition welding voltage regulating circuit, the cold arc transition welding waveform generator, a high-frequency arc starter and a gas protection system. The main control circuit controls the ESD voltage regulating circuit and the cold arc transition welding voltage regulating circuit respectively. The output ends of the ESD voltage regulating circuit and the cold arc transition welding voltage regulating circuit are connected with the ESD energy storage capacitor, the electronic switch and the cold arc transition welding energy storage capacitor through the dual power supply system. The electronic switch is arranged between the dual power supply system and the workpiece.

2. The multi-mode metal cold welding repair and strengthening equipment according to claim 1, characterized in that: The dual power supply system supplies power to the ESD energy storage capacitor and the cold arc transition welding energy storage capacitor respectively.

3. The multi-mode metal cold welding repair and strengthening equipment according to claim 1, characterized in that: The cold arc transition welding energy storage capacitor, the cold arc transition welding waveform generator, and the high-frequency arc starter are all connected to the cold arc transition welding power amplifier. The output end of the cold arc transition welding power amplifier is respectively connected to the cold arc transition welding deposition welding gun and the patch welding gun. The gas protection system corresponds to the cold arc transition welding deposition welding gun and the patch welding gun respectively. The high-frequency arc starter completes the welding of the workpiece via the output of the cold arc transition welding deposition welding gun or the patch welding gun; the ESD energy storage capacitor and the ESD waveform generator are connected to the ESD power amplifier. The output end of the ESD power amplifier is connected to the ESD deposition welding gun. The gas protection system provides argon protection corresponding to the ESD deposition welding gun. The ESD energy storage capacitor completes the welding of the workpiece via the ESD deposition welding gun.

4. The multi-mode metal cold welding repair and strengthening equipment according to claim 3 is characterized in that: The control panel connected to the control part consists of a digital display, a function parameter adjustment control panel, a discharge electrode and a shielding gas output part. The input parameters are displayed online in real time through the digital display, and different functions are switched and selected through the function parameter adjustment control panel. The output ends of the cold arc transition welding power amplifier and the ESD power amplifier are connected to three discharge electrodes, namely, the cold arc transition welding electrode, the ESD welding electrode and the SMD welding electrode. The cold arc transition welding power amplifier is connected to the discharge electrode of the cold arc transition welding deposition welding gun, and the ESD power amplifier is connected to the discharge electrode of the SMD welding gun and the discharge electrode of the ESD deposition welding gun. The main control circuit controls the shielding gas output part of the gas protection system.

5. The multi-mode metal cold welding repair and strengthening equipment according to claim 4, characterized in that: The digital display area includes the cold arc transition welding / chip welding pulse current display part, the cold arc transition welding / chip welding pulse time display part, the cold arc transition welding / chip welding pulse voltage display part, the ESD pulse number display part, the ESD pulse frequency display part, and the ESD pulse voltage display part. The function parameter adjustment control panel area includes the chip welding key, the spot welding / continuous welding switching key, the thin part A key, the thin part B key, the Al / Cu / Ti key, the Fe / Ni key, the single pulse key, and the micro-group wave key.

6. The multi-mode metal cold welding repair and strengthening equipment according to claim 5, characterized in that: The equipment's cold arc transition welding deposition welding gun, SMD welding welding gun and ESD deposition welding gun correspond to three cold welding methods: cold arc transition welding, ESD welding and SMD welding respectively.

7. The multi-mode metal cold welding repair and strengthening equipment according to claim 6, characterized in that: In the cold arc transition welding mode, there are four welding modes to choose from, namely thin part A, thin part B, Al / Cu / Ti and Fe / Ni. All four modes have preset optimization parameters and can switch between spot welding and continuous welding with one button. Micro-control waveform control is used, 1 to 8 micro-group waves are preset, and the pulse interval time of multi-pulse mode is set to 300μs; in the ESD welding mode, there are two modes to choose from: single pulse and micro-group wave.

8. The multi-mode metal cold welding repair and strengthening equipment according to claim 3, characterized in that: The output end of the dual power supply system is connected to the ESD energy storage capacitor through a DC 140V voltage. The ESD energy storage capacitor is composed of three energy storage capacitors C1, C2, C3 and diodes D3 and D4 in parallel. One path of the ESD energy storage capacitor is connected to the ESD deposition welding gun through resistors, inductors, diodes, and pulse width modulated transient suppression diodes KD in sequence. The resistors, inductors, and diodes are two groups of parallel structures. The other path of the ESD energy storage capacitor is connected to the workpiece through an electronic switch.

9. The multi-mode metal cold welding repair and strengthening equipment according to claim 3, characterized in that: The output end of the dual power supply system is connected to a cold arc transition welding energy storage capacitor through a DC voltage of 42 to 56V. The cold arc transition welding energy storage capacitor is formed by connecting four energy storage capacitors in parallel. One path of the cold arc transition welding energy storage capacitor is provided with two branches, one branch is connected to a workpiece through an electronic switch, and the other branch is connected to a patch welding gun through a fast recovery diode D; the other path of the cold arc transition welding energy storage capacitor is connected to a pulse width modulation through a MOS field effect tube connected in parallel to the fast recovery diode D, and one path of the cold arc transition welding energy storage capacitor is connected to a cold arc transition welding deposition gun through a line via the output end of the fast recovery diode D, and a transformer T1 connected to a high voltage generator is provided on the line.

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