CN211804327U - Preheating device for hot wire welding - Google Patents
Preheating device for hot wire welding Download PDFInfo
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- CN211804327U CN211804327U CN201922357118.0U CN201922357118U CN211804327U CN 211804327 U CN211804327 U CN 211804327U CN 201922357118 U CN201922357118 U CN 201922357118U CN 211804327 U CN211804327 U CN 211804327U
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Abstract
The utility model discloses a hot wire welding preheating device relates to the welding technology field, has solved the welding and has preheated the unstable technical problem that influences welding efficiency and quality of temperature regulation, and its technical scheme main points utilize temperature element's temperature real-time display effect, and the preheating temperature of control welding wire carries out accurate adjustment control to preheating temperature and electric current, can open the hot wire power according to setting for the temperature is automatic, avoids the high or low welding defect who arouses of temperature. Meanwhile, the wire feeding pipe is internally communicated with the inlet and outlet protective gas, so that the welding wire can be prevented from being heated and oxidized. The welding efficiency and quality and the stability of the welding process are integrally improved, and meanwhile, the equipment cost and the operation difficulty are not greatly increased.
Description
Technical Field
The disclosure relates to the technical field of welding, in particular to a preheating device for hot wire welding.
Background
Argon arc welding is a high-quality welding method commonly used in engineering construction, is widely used for backing weld beads for welding pipelines and equipment, is stable in welding process and attractive in shape, but is low in welding efficiency. In order to improve the welding efficiency of argon arc welding, various industries provide a plurality of improved technologies, hot wire welding is one of the technologies, the welding deposition efficiency can be effectively improved by preheating a welding wire before the welding wire enters a molten pool, and the welding efficiency is more than three times that of the traditional argon arc welding.
The mode of realizing welding wire preheating usually adopts the mode of resistance heating, heats the welding wire to near melting temperature, gets into the molten bath through the mode of automatic wire feed, and the temperature of preheating and wire feed speed are the key factor that influences welding quality and efficiency. Too high a preheating temperature can cause oxidation of the wire, the introduction of oxide films, and too low a temperature can cause incomplete fusion and incomplete penetration of the wire, etc. Therefore, how to accurately regulate and control the preheating temperature and the current is particularly important to the welding quality and efficiency.
SUMMERY OF THE UTILITY MODEL
The technical purpose of the present disclosure is: the hot welding wire preheating device automatically controls the preheating temperature during wire feeding, so that the preheating temperature of the welding wire is kept near a set value, oxidation is avoided, and the welding stability and the welding quality can be further improved.
The technical purpose of the present disclosure is achieved by the following technical solutions:
a hot wire welding preheating device comprises a control console, a power supply, a welding gun and a wire feeding mechanism, wherein the control console is connected with the power supply and the wire feeding mechanism, and the power supply is connected with the welding gun and the wire feeding mechanism; the console displays the preheating current, the preheating temperature and the wire filling speed in real time;
the wire feeding mechanism comprises a wire feeder, a welding wire, a wire feeding wheel, an air inlet, an air outlet, a conductive device and a thermocouple, the wire feeder is connected with the console and the power supply, and the wire feeder outputs the welding wire; a wire feeding pipe is arranged outside the welding wire, the top of the wire feeding pipe is provided with an air inlet, the bottom of the wire feeding pipe is provided with an air outlet, a wire feeding wheel is arranged above the wire feeding pipe, the welding wire enters the wire feeding pipe through the wire feeding wheel, a heat conduction device and a temperature measurement element are arranged in the wire feeding pipe, and the temperature measurement element is arranged below the heat conduction device;
the dry elongation of the welding wire is 30-60mm, the preheating temperature is 150-300 ℃, and the included angle between the wire feeding pipe and the welding workpiece is 30-60 ℃;
the welding gun is connected with a first protective gas bottle, and the wire feeder is connected with a second protective gas bottle.
Further, the dry elongation of the welding wire is 45mm, and the preheating temperature is 200 ℃.
Further, the welding gun is connected with the wire feeding pipe through a clamp.
Further, the temperature measuring element comprises a thermocouple, a thermal resistor, a thermistor and a temperature sensor.
The beneficial effect of this disclosure lies in: the temperature real-time display effect of the temperature measuring element is utilized to control the preheating temperature of the welding wire, the preheating temperature and the current are accurately adjusted and controlled, the hot wire power supply can be automatically started and stopped according to the set temperature, and the welding defect caused by overhigh temperature or overlow temperature is avoided. Meanwhile, the wire feeding pipe is internally communicated with inlet and outlet protective gas (gas inlet and gas outlet of the gas inlet and the gas outlet), so that the welding wire can be prevented from being heated and oxidized. The welding efficiency and quality and the stability of the welding process are integrally improved, and meanwhile, the equipment cost and the operation difficulty are not greatly increased.
Drawings
FIG. 1 is a schematic diagram of the structure of the device of the present disclosure;
FIG. 2 is a schematic view of a wire feeding tube;
in the figure: 1-welding a workpiece; 2-a console; 3-a power supply; 4-a wire feeder; 5-a wire feeding pipe; 6-a welding gun; 7-tungsten electrode; 8-dry elongation; 9-a clamp; 10-a first protective cylinder; 11-a second protective gas cylinder; 12-a contact tip; 13-included angle between wire feeding pipe and welding workpiece; 51-a welding wire; 52-wire feeding wheel; 53-air inlet; 54-air outlet; 55-heat conducting means; 56-temperature measuring element.
Detailed Description
The technical scheme of the disclosure will be described in detail with reference to the accompanying drawings. In the description of the present disclosure, it is to be understood that the terms "top," "bottom," "above," "below," and the like, as used herein, refer to an orientation or positional relationship based on that shown in the drawings, which is for convenience and simplicity of description, and does not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be taken as limiting the present disclosure. "inner" and "outer" refer to the inner and outer contours of the respective component itself.
Also, unless expressly stated or limited otherwise, the term "coupled" is intended to be inclusive, e.g., that may be fixedly coupled, detachably coupled, or integrally coupled; can be mechanically or electrically connected; the connection may be direct or indirect via an intermediate medium, and may be a communication between the two elements. The specific meaning of the above terms in the present disclosure can be understood in specific instances by those skilled in the art.
In addition, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
Fig. 1 is a schematic structural diagram of a hot wire welding preheating device according to the present disclosure, and as shown in fig. 1, the device includes a console, a power supply, a welding gun, and a wire feeding mechanism, the console is connected to the power supply and the wire feeding mechanism, and the power supply is connected to the welding gun and the wire feeding mechanism.
The wire feeding mechanism comprises a wire feeder, a welding wire, a wire feeding wheel, an air inlet, an air outlet, a conductive device and a thermocouple, wherein the wire feeder is connected with the console and the power supply, and the welding wire is fed out by the wire feeder. The wire feeding pipe is arranged outside the welding wire, the top of the wire feeding pipe is provided with an air inlet, the bottom of the wire feeding pipe is provided with an air outlet, the wire feeding wheel is arranged above the wire feeding pipe, the welding wire enters the wire feeding pipe through the wire feeding wheel, the heat conduction device and the temperature measurement element are arranged in the wire feeding pipe, and the temperature measurement element is arranged below the heat conduction device. In addition, the included angle between the wire feeding pipe and the welding workpiece is 30-60 ℃; and the wire feeding pipe and the welding gun can be fixedly connected through a clamp.
Generally, the temperature measuring element can be selected from a thermocouple, a thermal resistor, a thermistor, a temperature sensor and the like; the heat conducting device is a prior art, such as chinese utility model patent publication nos. CN206662578U and CN206509615U and chinese invention patent publication No. CN102039466B, which all describe the heat conducting device in detail, and the disclosure will not be repeated.
The welding gun is connected with a first protective gas cylinder, the wire feeder is connected with a second protective gas cylinder, and the first protective gas cylinder and the second protective gas cylinder are argon gas cylinders. The bottom of the welding gun is provided with a tungsten electrode, and the welding is argon tungsten-arc welding; argon is fed to the wire feeder to prevent high temperature oxidation of the wire.
The working principle of the disclosure is as follows: the control console is connected with the wire feeding mechanism and the power supply, can display and adjust parameters such as current, voltage, welding speed and the like in the welding process, and particularly can display preheating current, preheating temperature, wire filling speed and the like in real time; in addition, the controller of the wire feeder can be integrated with the console or can be arranged independently. The power supply is generally divided into a welding power supply and a welding wire preheating power supply, and the welding power supply and the welding wire preheating power supply can be separated or integrated into a whole to stably convey welding current and voltage. The wire feeding mechanism is used for welding the pulsating filling wire, the pulsating filling wire is filled into a molten pool according to the set wire feeding speed and angle, a contact tip of the welding gun heats the welding wire, and the temperature measuring element displays the heating temperature of the welding wire and automatically adjusts the welding wire within the range of the set temperature.
The preheating current is in a direct current or alternating current mode, the dry elongation of the welding wire (namely the distance from the end of the welding wire to the end of the contact tube) is 30-60mm, and the optimal dry elongation is 45 mm; the preheating temperature is 150-; preheating is carried out in advance before use, and welding is started after the set temperature is reached.
Taking a flat butt welding seam as an example, 30mm of two sides of the welding seam are polished by a grinder and fixed on a welding operation table. Setting welding power supply currents such as 130A and 12V; setting welding preheating current 400A, wire feeding speed of 2000-; then setting the flow of welding protective gas, wherein the welding gun is 14L/min, and the wire feeder is 8L/min; after the argon arc welding is performed with high frequency, the welding gun moves at the speed of 6-8cm/min and is adjusted in a small range according to the deposited metal effect.
The foregoing is an exemplary embodiment of the present disclosure, and the scope of the present disclosure is defined by the claims and their equivalents.
Claims (4)
1. The preheating device for hot wire welding is characterized by comprising a control console, a power supply, a welding gun and a wire feeding mechanism, wherein the control console is connected with the power supply and the wire feeding mechanism; the console displays the preheating current, the preheating temperature and the wire filling speed in real time;
the wire feeding mechanism comprises a wire feeder, a welding wire, a wire feeding wheel, an air inlet, an air outlet, a conductive device and a thermocouple, the wire feeder is connected with the console and the power supply, and the wire feeder outputs the welding wire; a wire feeding pipe is arranged outside the welding wire, the top of the wire feeding pipe is provided with an air inlet, the bottom of the wire feeding pipe is provided with an air outlet, a wire feeding wheel is arranged above the wire feeding pipe, the welding wire enters the wire feeding pipe through the wire feeding wheel, a heat conduction device and a temperature measurement element are arranged in the wire feeding pipe, and the temperature measurement element is arranged below the heat conduction device;
the dry elongation of the welding wire is 30-60mm, the preheating temperature is 150-300 ℃, and the included angle between the wire feeding pipe and the welding workpiece is 30-60 ℃;
the welding gun is connected with a first protective gas bottle, and the wire feeder is connected with a second protective gas bottle.
2. The hot wire welding preheating device according to claim 1, wherein a dry elongation of the welding wire is 45mm, and the preheating temperature is 200 ℃.
3. The hot wire welding preheating apparatus according to claim 2, wherein the welding torch is connected to the wire feed tube by a clamp.
4. The hot wire bond preheating apparatus of claim 3, wherein the temperature sensing element comprises a thermocouple, a thermal resistor, a thermistor, and a temperature sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922357118.0U CN211804327U (en) | 2019-12-25 | 2019-12-25 | Preheating device for hot wire welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922357118.0U CN211804327U (en) | 2019-12-25 | 2019-12-25 | Preheating device for hot wire welding |
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| CN211804327U true CN211804327U (en) | 2020-10-30 |
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| CN201922357118.0U Active CN211804327U (en) | 2019-12-25 | 2019-12-25 | Preheating device for hot wire welding |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112743245A (en) * | 2021-01-05 | 2021-05-04 | 兰州理工大学 | Laser coaxial powder feeding and hot wire coupling welding device and method |
| CN113664337A (en) * | 2021-08-20 | 2021-11-19 | 中北大学 | Magnesium alloy electric arc vibration material disk drive |
-
2019
- 2019-12-25 CN CN201922357118.0U patent/CN211804327U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112743245A (en) * | 2021-01-05 | 2021-05-04 | 兰州理工大学 | Laser coaxial powder feeding and hot wire coupling welding device and method |
| CN113664337A (en) * | 2021-08-20 | 2021-11-19 | 中北大学 | Magnesium alloy electric arc vibration material disk drive |
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