CN201295811Y - Water-cool excitation coil device for reproducing mould with electromagnetic composite gas shielding resurfacing welding - Google Patents

Abstract

A water-cooled excitation coil device for remanufacturing molds with electromagnetic composite gas shielded surfacing, including a magnetic core, an upper retaining ring, a lower retaining ring, a winding group, and a thermal insulation layer; the magnetic core and the lower retaining ring are wound with high Water-passing copper pipe with high thermal conductivity; an insulating layer is laid between the winding group and the water-passing copper pipe, and an insulating layer is laid between different layers of the winding group to separate them; the protective layer and the upper retaining ring are equipped with adjustable The through hole for the water supply copper pipe protrudes; one end of the two ends of the water flow copper pipe is a water inlet, and the other end is a water outlet. Due to the adoption of a structure in which copper tubes with high thermal conductivity are densely arranged and ring-wound on the lower retaining ring and the permeable core, the heat transmitted to the excitation coil is taken away in time by the flow of cold water, which achieves the purpose of cooling and prevents the coil from Burned due to overheating, so that the excitation coil can be in good working condition under high current and continuous welding conditions. The utility model has the advantages of simple manufacture, reliable control, good stability and low cost.

Description

Water-cooled excitation coil device for remanufacturing mold with electromagnetic composite gas shielded surfacing

technical field

The utility model relates to the fields of welding and mold surfacing welding remanufacturing, in particular to a water-cooled excitation coil device for electromagnetic composite gas shielding surfacing welding remanufacturing molds.

Background technique

At present, electromagnetic composite gas shielded welding technology has been widely used in actual production because of its high efficiency, energy saving, simple and convenient operation, and easy realization of mechanization and automation, and has become an alternative process of manual arc welding. With the acceleration of industrialization, improving welding production efficiency has become a necessary means for enterprises to reduce production costs and improve product competitiveness.

Chinese patent number: ZL02116241.7 discloses a "magnetically controlled high deposition rate melting electrode mixed gas shielded welding method", which controls the welding arc and droplet transfer process by adding a hollow coil to generate a specific regular longitudinal magnetic field, but its There is no cooling device for the coil, so it is difficult to realize continuous high-current welding process. This is because under certain conditions, such as mold surfacing welding repair, a large line energy input is required, the welding current is relatively large, and continuous operation of the welding process is required to improve efficiency. However, the excitation coil is installed on the welding torch. During the welding process, a large amount of heat will be transmitted to the excitation coil, which will increase the temperature of the excitation coil. In addition, continuous welding or surfacing will accumulate heat for a long time, which will cause the excitation coil to burn out. The excitation coil cannot work normally, so that the continuous high-current welding process cannot be realized.

Therefore, it is necessary to design a water-cooled excitation coil device to solve the problem of overheating of the excitation coil in the process of magnetron welding during mold surfacing welding repair and remanufacturing, so that electromagnetic composite gas shielded welding or surfacing welding can be performed under high current and continuous Work stably under the condition of time.

Utility model content

The purpose of this utility model is to provide an electromagnetic composite gas protection surfacing welding remanufacturing mold for the problem that the excitation coil is overheated during the magnetic control welding process, and the excitation coil is burned out during the mold surfacing welding repair, so that the excitation coil cannot work normally. water-cooled excitation coil device.

In order to achieve the above object, the technical scheme adopted by the utility model is as follows: the water-cooled excitation coil device of the remanufacturing mold of the electromagnetic composite gas shielded welding includes a magnetic core, an upper retaining ring, a lower retaining ring, a winding group and a protective layer, Water-through copper pipes with high thermal conductivity are wound around the magnetic-conducting core and the lower retaining ring; through holes for the water-through copper pipes to protrude are provided on the protective layer and the upper retaining ring; the water-through copper pipes One end of the two ends of the pipe is a water inlet, and the other end is a water outlet.

Because the utility model adopts copper tubes with high thermal conductivity to be closely arranged and annularly wound on the lower retaining ring and the magnetic conductor core, the heat transmitted to the excitation coil is taken away in time by the cold water flowing into the copper tubes, and the purpose of cooling is achieved. It effectively prevents the coil from being burnt due to overheating, so that the excitation coil can be in good working condition under high current and continuous welding conditions.

Due to the above-mentioned technical scheme, the utility model also has the following beneficial effects:

1) The utility model is easy to form, simple to manufacture, reliable to control, good in stability and low in cost.

2) The utility model can be applied to the situation of high-current continuous welding.

3) The utility model has broad application value and development prospects in the fields of mold manufacturing and remanufacturing, mechanical equipment recycling and utilization, key component repair, material preparation, resource recycling, and green recycling manufacturing and equipment.

Description of drawings

Fig. 1 is the structural representation of the water-cooled excitation coil device of the remanufacturing mold of the electromagnetic composite gas shielded overlay welding of the utility model;

Fig. 2 is the front view of the water-cooled excitation coil device of the remanufacturing mold of the electromagnetic composite gas shielded surfacing welding of the utility model.

In the figure, 1. welding torch; 2. threaded hole; 3. water outlet; 4. winding group; 5. water inlet; 6. workpiece; 7. lower retaining ring; 8. protective layer; 9. insulating layer; 10. Upper retaining ring; 11. Wire inlet; 12. Wire outlet; 13. Magnetic core; 14. Top tightening screw; 15. Water copper pipe.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is described further:

As shown in Figure 1 and Figure 2, a water-cooled excitation coil device for electromagnetic composite gas shielded surfacing remanufacturing molds, including a magnetic core 13, an upper retaining ring 10, a lower retaining ring 7, a winding group 4 and a winding group Outer heat insulation protection layer 8, the water-through copper tube 15 with high thermal conductivity is wound on the said magnetic conductive core 13 and the lower retaining ring 7; the insulating layer 9 is laid between the winding group 4 and the water-through copper tube 15 At the same time, the different layers of the winding group 4 are also laid with insulating layers to separate them; the protective layer 8 and the upper retaining ring 10 are all provided with through holes for the water-through copper pipe 15 to protrude; the water-through One end of the two ends of the copper pipe 15 is the water inlet 5, and the other end is the water outlet 3. A through hole is drilled on the circumference of the upper retaining ring 10 for the copper pipe to protrude; an insulating layer 9 is provided outside the water-passing copper pipe; a protective layer 8 is wound outside the winding group; an incoming line is provided on the upper retaining ring 10 Port 11 and outlet port 12. The utility model adopts the structural form in which copper tubes with high thermal conductivity are densely arranged and ring-wound on the lower retaining ring and the conductive core, and the heat transmitted to the excitation coil is taken away in time by the flow of cold water flowing in, thereby achieving the purpose of cooling. It effectively prevents the coil from being burned due to overheating, so that the excitation coil can be in good working condition under the conditions of high current and continuous welding or surfacing welding.

The water inlet 5 of the water-through copper pipe 15 described in the utility model stretches out the protective layer from the lower retaining ring; the water outlet 3 of the water-through copper pipe protrudes from the upper retaining ring, so that the cooling water flows from bottom to top Rotating outflow makes the part with the highest temperature of the coil flow into the cooling water first to take away the heat to the maximum extent to achieve the purpose of fully cooling the excitation coil, so that the excitation coil can be applied to high current and continuous welding or surfacing welding.

The water-cooled excitation coil of the remanufacturing mold of the electromagnetic composite gas shielded surfacing described in the utility model can also braze the magnetic guide core 13, the upper retaining ring 10, the lower retaining ring 7 and the water-passing copper pipe 15 into one, so that through The water copper pipe 15 is in flat contact with the excitation coil 4 and the lower retaining ring 7 and conducts heat evenly.

The magnetically conductive core 13 is fixedly connected with the welding torch 1. A preferred solution is that the pipe end of the magnetically conductive core 13 is radially provided with three evenly distributed threaded holes (for jacking screws to penetrate), and the jacking screws 14 pass through the magnetically conductive core. The threaded hole 2 on 13 is tightly locked with the welding torch 1, so that the exciting coil is fixed on the welding torch 1, coaxial with the welding torch 1, and the distance between the exciting coil and the workpiece can be adjusted. The water-cooled excitation coil device is easy to form, simple to manufacture, reliable to control and low in cost. At the same time, the magnetically permeable core 13 is used to increase the strength of the applied magnetic field and to concentrate the magnetic field distribution in the welding area, which can effectively control the welding arc and improve the quality of the weld seam.

Claims (4)

1. The water-cooled excitation coil device of the electromagnetic composite gas shielded surfacing remanufacturing mold, including the magnetic core (13), the upper retaining ring (10), the lower retaining ring (7), the winding group (4) and the heat insulation protection layer (8), it is characterized in that: the water-through copper tube (15) of high thermal conductivity is wound on the described magnetic conductor core (13) and the lower retaining ring (7); The insulating layer (9) is laid between the tubes (15), and the different layers of the winding group (4) are also laid with an insulating layer to separate them; There are through holes for the copper pipes (15) to protrude; one end of the two ends of the copper pipes (15) is a water inlet (5), and the other end is a water outlet (3). 2. The water-cooled excitation coil device of the electromagnetic composite gas shielded surfacing remanufacturing mold according to claim 1, characterized in that: the water inlet (5) of the water-passing copper pipe (15) is connected from the lower retaining ring (7) ) protrudes from the protective layer (8); the water outlet (3) of the water copper pipe (15) protrudes from the upper retaining ring (10). 3. The water-cooled excitation coil device for electromagnetic composite gas shielded surfacing remanufacturing mold according to claim 1, characterized in that: the magnetic core (13), the upper retaining ring (10), and the lower retaining ring (7) It is integrated with brazing of the copper pipe for water (15). 4. The water-cooled excitation coil device of any electromagnetic composite gas-shielded surfacing remanufacturing mold according to claim 1-3, characterized in that three uniformly distributed The threaded hole (2) of the screw (14) is used to fix the magnetic core (13) and the welding torch (1) together.

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