Device and method for measuring thermal efficiency of melting electrode welding droplet

Abstract

The application provides a melting electrode welding droplet heat efficiency measuring device and a measuring method, and relates to the technical field of welding. The measuring method replaces the base material in the melting electrode welding with a special water-cooled copper plate, thereby simulating the actual welding process. In the simulated welding process, the welding material melts and can produce molten droplets falling from the welding material. The molten droplets are collected and exchanged with a cooling medium. The total heat of the collected molten droplets absorbed by the cooling medium is calculated to determine the heat carried by the molten droplets. Then, the heat is compared with the total electric energy consumed in the simulated welding process, that is, the heat is compared with the consumed electric energy, the proportion of the heat to the consumed electric energy is obtained, and the droplet heat efficiency is obtained. The melting electrode welding droplet heat efficiency measuring method considers that the heat transfer of the molten droplet is based on the transfer of the mass of the molten droplet, can realize the separate measurement of the total heat of the molten droplet, and further measure the heat efficiency of the molten droplet. Therefore, an effective measuring method for the heat efficiency of the molten droplet is provided.

Description

Technical Field

[0001] The present application relates to the field of welding technology, and in particular to a device and method for measuring the thermal efficiency of a consumable electrode welding droplet. Background Art

[0002] Conveyor electrode welding is a metal joining process widely used in the manufacturing industry. It uses an electric arc to heat a fusible welding electrode, melting it and connecting it to the workpiece surface, thus forming a stable weld. In convection electrode welding, heat is mainly transferred in two ways: first, the arc directly heats the molten pool, and second, high-temperature molten droplets carry heat into the welding pool. These two heat transfer methods together trigger the entire thermal process of convection electrode welding. Because the dripping of molten droplets involves the dual transfer of mass and heat, its thermal efficiency has a significant impact on the weld metal coverage rate, welding process, and welding quality. In the field of welding numerical simulation, the value of the molten droplet thermal efficiency is an important input parameter for simulating the transient thermal / mechanical behavior of the molten pool.

[0003] Currently, most methods for measuring welding thermal efficiency are designed solely for arc thermal efficiency in non-consumable electrode welding. For example, methods using a water-cooled copper plate are applicable only to arcs, which transfer heat across the weld surface in the form of heat flux. Heat transfer in a droplet is based on mass transfer, so similar measurement methods cannot be used. Summary of the Invention

[0004] In view of this, the present application provides a device and method for measuring the thermal efficiency of a consumable electrode welding droplet, the purpose of which is to solve the above technical problems to a certain extent.

[0005] The first aspect of the present application provides a method for measuring the thermal efficiency of a consumable electrode welding droplet, comprising:

[0006] Welding the welding material and the welding body to melt the welding material into molten droplets that can drip from the welding material;

[0007] Collect the dripping molten droplets and use the cooling medium to exchange heat with the collected molten droplets;

[0008] The total heat of the collected droplets absorbed by the cooling medium is calculated and compared with the total electrical energy consumed during the welding process to obtain the droplet thermal efficiency.

[0009] Preferably, the collecting of dripping molten droplets and exchanging heat with the collected molten droplets using a cooling medium includes: using a cooling medium to accommodate the molten droplets dripping from the welding material.

[0010] Preferably, the collecting of the dripping molten droplets and exchanging heat with the collected molten droplets using a cooling medium comprises:

[0011] The molten droplets dripping from the welding material are collected in a predetermined receiving section, and the cooling medium flows through the predetermined receiving section;

[0012] Among them, the first temperature of the cooling medium at the position where the cooling medium enters the predetermined accommodation section, the second temperature of the cooling medium at the position where the cooling medium flows out of the predetermined accommodation section, and the flow rate of the cooling medium at the position where the cooling medium flows out of the predetermined accommodation section are obtained, and the total heat of the collected molten droplets is calculated based on the first temperature, the second temperature and the flow rate.

[0013] Preferably, the method further comprises: cooling the welding body during the welding process.

[0014] Preferably, the method further comprises: determining a reference plane based on the position of the welding material, arranging an even number of welding bodies on both sides of the reference plane, and each side of the reference plane has the same number of welding bodies.

[0015] Preferably, the method further comprises: arranging the welding bodies on both sides of the reference plane so that a gap is formed between the welding bodies on both sides of the reference plane, and collecting molten droplets dripping from the welding material from below an upper opening of the gap.

[0016] In a second aspect, the present application provides a device for measuring the thermal efficiency of a consumable electrode welding droplet, comprising:

[0017] A power source including a first electrode and a second electrode, wherein the first electrode is configured to be electrically connected to the welding material;

[0018] a welding body electrically connected to the second electrode, for welding the welding material and the welding body to melt the welding material;

[0019] a collecting member disposed below the welding material, the collecting member being used to collect molten droplets dripping from the welding material, the collecting member having a receiving portion, the receiving portion being used to circulate and receive a cooling medium to exchange heat with the molten droplets collected in the receiving portion; the receiving portion having a cooling medium inlet and a cooling medium outlet;

[0020] a first temperature measuring member and a second temperature measuring member, respectively disposed at the cooling medium inlet and the cooling medium outlet, and respectively measuring a first temperature of the cooling medium at the cooling medium inlet and a second temperature of the cooling medium at the cooling medium outlet;

[0021] The flow measurement component is provided at the cooling medium outlet to measure the flow of the cooling medium at the cooling medium outlet.

[0022] Preferably, there are a plurality of welding bodies, and the welding bodies included in the measuring device include two welding bodies arranged on both sides of the collecting member in a horizontal direction.

[0023] Preferably, the width of the gap formed by the two welding bodies arranged on both sides of the collecting member in the horizontal direction gradually increases from top to bottom;

[0024] The width of the upper opening of the gap formed by the two welding bodies arranged on both sides of the collecting member in the horizontal direction is 1.5 times the diameter of the welding wire, and the width of the upper opening is less than or equal to 10 mm.

[0025] Preferably, the welding body has a cooling path for circulating a circulating medium;

[0026] The collecting member further includes a filter member disposed at the cooling medium outlet, and the filter member is used to block the molten droplets collected by the collecting member.

[0027] According to the method for measuring the thermal efficiency of consumable electrode welding droplets provided in this application, a welding process is performed between a welding material and a welding body to simulate an actual welding process. During the welding process, the welding material melts, generating droplets that drip from the welding material. These droplets are collected and heat-exchanged with a cooling medium. The total heat absorbed by the cooling medium is calculated to determine the heat carried by the droplets. This heat is then compared with the electrical energy consumed during the welding process. That is, the heat is compared with the consumed electrical energy to determine the proportion of the consumed electrical energy, thereby determining the droplet thermal efficiency.

[0028] The method for measuring the thermal efficiency of a consumable electrode welding droplet provided in this application takes into account that the heat transfer of the droplet is based on the transfer of the droplet's mass. This allows for the measurement of the droplet's total heat, and thus its thermal efficiency. Therefore, an effective method for measuring the thermal efficiency of a droplet is proposed.

[0029] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 A schematic diagram of a measuring device provided according to an embodiment of the present application is shown;

[0032] Figure 2 A schematic diagram showing a collecting member of a measuring device provided according to an embodiment of the present application is shown;

[0033] Figure 3 A schematic diagram showing a cross-sectional view of a collecting member of a measuring device provided according to an embodiment of the present application.

[0034] Reference numerals:

[0035] 1-collecting component; 2-welding body; 3-insulating and heat-insulating base; 4-power supply; 5-welding wire; 6-first temperature monitor; 7-second temperature monitor, flow meter; 8-level meter; 9-filtering component. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solution of this application in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of this application.

[0037] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this application and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0038] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0039] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0040] According to a first aspect of an embodiment of the present application, a method for measuring the thermal efficiency of a consumable electrode welding droplet is provided. The steps of the method for measuring the thermal efficiency of a consumable electrode welding droplet will be described in detail below.

[0041] According to the method for measuring the thermal efficiency of the melting electrode welding droplet provided in the embodiment of the present application, the method includes: welding the welding material and the welding body 2 to melt the welding material into droplets that can drip from the welding material; collecting the dripping droplets, and using a cooling medium to exchange heat with the collected droplets; calculating the total heat of the collected droplets absorbed by the cooling medium, and comparing the total heat with the total electrical energy consumed in the welding process to obtain the thermal efficiency of the droplets.

[0042] Thus, according to the method for measuring the thermal efficiency of consumable electrode welding droplets provided in an embodiment of the present application, a welding material and a welding body 2 are used to simulate an actual welding process. During the welding process, the welding material melts, thereby generating droplets that drip from the welding material. These droplets are collected and heat-exchanged with a cooling medium. The total heat absorbed by the cooling medium by the collected droplets is calculated to determine the heat carried by the droplets. This heat is then compared with the total electrical energy consumed during the welding process. That is, the heat is compared with the consumed electrical energy to determine the proportion of the heat to the consumed electrical energy, thereby determining the droplet thermal efficiency.

[0043] The method for measuring the thermal efficiency of a consumable electrode welding droplet provided in the embodiments of this application takes into account that heat transfer in a droplet is based on the transfer of droplet mass. This allows for the independent measurement of the total heat content of the droplet, and thus the thermal efficiency of the droplet. Therefore, an effective method for measuring the thermal efficiency of a droplet is provided.

[0044] In the embodiment, the welding material may be, for example, a welding wire 5, and the welding wire 5 may be, for example, a cylindrical welding wire 5. In the embodiment, the welding wire 5 may be clamped by, for example, an automated welding device or a welding robot.

[0045] In the embodiment, since the welding material and the welding body 2 strike an arc during the welding process, a closed loop is formed. By measuring the voltage and current of the loop, the loop power can be obtained by multiplying the voltage and current. The product of the loop power and the time of the welding process is the consumed electrical energy.

[0046] In the embodiment, the collecting member 1 disposed below the welding material may be used to collect the molten droplets, which will be explained in the subsequent description.

[0047] According to the measurement method provided in an embodiment of the present application, the step of collecting dripping molten droplets and exchanging heat with the collected molten droplets using a cooling medium may include: using the cooling medium to contain the molten droplets dripping from the welding material. In other words, the molten droplets dripping from the welding material can drip directly into the cooling medium, thereby being contained by the cooling medium. In this case, there is no intervening structure between the cooling medium and the molten droplets, and the two directly exchange heat, which is beneficial for reducing heat loss and improving measurement accuracy.

[0048] According to the measurement method provided in an embodiment of the present application, the step of collecting dripping molten droplets and exchanging heat with the collected molten droplets using a cooling medium may further include: collecting the molten droplets dripping from the welding material within a predetermined receiving section, and allowing the cooling medium to flow through the predetermined receiving section. In an embodiment, a first temperature of the cooling medium at a location where the cooling medium enters the predetermined receiving section, a second temperature of the cooling medium at a location where the cooling medium exits the predetermined receiving section, and a flow rate of the cooling medium at a location where the cooling medium exits the predetermined receiving section are obtained, and the total heat of the collected molten droplets is calculated based on the first temperature, the second temperature, and the flow rate.

[0049] In this embodiment, the cooling medium is in motion as it flows through the predetermined containment section, and the molten droplets collected within the predetermined containment section exchange heat with the cooling medium as it flows through the predetermined containment section. In this case, by obtaining the first temperature, second temperature, and flow rate, and integrating the first and second temperatures as instantaneous temperatures, the total heat capacity of the molten droplets can be relatively accurately determined. This is described in detail below.

[0050] In an embodiment, the cooling medium may be water, for example. Here, the first temperature is recorded as the water inlet temperature as T inlet (t), the second temperature is recorded as the outlet temperature as T outlet (t), the unit can be K (Kelvin), and the flow rate can be the mass flow rate of the outlet The unit can be kg / s, then:

[0051]

[0052] In the above formula (1), Q is the total heat of the droplet taken away by the cooling medium, the unit is J (joule); C p is the specific heat capacity of the cooling medium, in J / (kg×K), t0 is the start time of welding, and t1 is the end time of welding, in seconds. Based on the above formula (1), the droplet thermal efficiency can be determined by the following formula (2):

[0053]

[0054] Wherein, η is the droplet thermal efficiency, U is the above-mentioned circuit voltage, i.e., welding voltage, in V (volts); I is the above-mentioned circuit current, i.e., welding current, in A (amperes).

[0055] According to the measurement method provided in the embodiment of the present application, the measurement method may further include: cooling the welding body 2 during the welding process. In this way, during the welding process, that is, during the simulated welding period, the welding body 2 is cooled, thereby preventing the physical phase of the welding body 2 from changing or undergoing a significant change (for example, preventing the welding body 2 from becoming molten or becoming significantly molten due to heat accumulation), which would cause a portion of the molten welding body 2 to flow and interfere with the collection of molten droplets. In addition, the physical phase of the welding body 2 can be maintained after the welding process is completed, and the welding body 2 can be used again in the next welding process, thereby allowing the welding body 2 to be continuously utilized and increasing the service life of the welding body 2.

[0056] According to the measurement method provided in an embodiment of the present application, the measurement method may further include: determining a reference plane based on the location of the welding material, arranging an even number of welding bodies 2 on both sides of the reference plane, and having the same number of welding bodies 2 on each side of the reference plane.

[0057] Arranging an equal number of welding bodies 2 on both sides of the reference plane ensures that the arc generated between the welding material and the welding body 2 is relatively centered, that is, relatively along the reference plane, thereby preventing the arc from affecting dripping molten droplets. Therefore, arranging an equal number of welding bodies 2 on both sides of the reference plane helps improve measurement accuracy.

[0058] In an embodiment, the number of the welding bodies 2 may be, for example, two, four, or six.

[0059] Preferably, in an embodiment, the reference plane may, for example, pass through the axis of the welding material, and the welding bodies 2 on both sides of the reference plane may be symmetrical about the reference plane, so that the arc generated between the welding material and the welding body 2 can be vertically centered, basically along the reference plane, which is conducive to improving the accuracy of the measurement.

[0060] The measurement method provided in an embodiment of the present application may further include arranging the welding bodies 2 on either side of the reference plane so as to form a gap between the welding bodies 2 on either side of the reference plane, and collecting molten droplets dripping from the welding material from below the upper opening of the gap. Thus, according to the measurement method provided in an embodiment of the present application, collecting molten droplets from below the upper opening of the gap helps prevent arcing between the welding material and the welding bodies 2 from affecting the collection process.

[0061] According to the second aspect of the embodiment of the present application, a device for measuring the thermal efficiency of a melting electrode welding droplet is provided. The device can be used to perform the above measurement method. The device includes a power supply 4, a welding body 2, and a collecting member 1. The power supply 4 includes a first pole and a second pole, and the first pole is used to be electrically connected to the welding material. The welding body 2 is electrically connected to the second pole, and the welding material and the welding body 2 are welded to melt the welding material. The collecting member 1 is arranged below the welding material, and the collecting member 1 is used to collect the droplets dripping from the welding material. The collecting member 1 has a receiving portion, and the receiving portion is used to circulate and receive a cooling medium to exchange heat with the droplets collected in the receiving portion; the receiving portion has a cooling medium inlet and a cooling medium outlet.

[0062] In an embodiment, a first temperature measuring member and a second temperature measuring member are provided at the cooling medium inlet and the cooling medium outlet, respectively, to measure a first temperature of the cooling medium at the cooling medium inlet and a second temperature of the cooling medium at the cooling medium outlet, respectively. A flow measuring member is provided at the cooling medium outlet to measure the flow rate of the cooling medium at the cooling medium outlet.

[0063] In an embodiment, the first temperature measuring component and the second temperature measuring component can be the first temperature monitor 6 and the second temperature monitor 7 respectively, the cooling medium inlet and the cooling medium outlet can be the above-mentioned water inlet and water outlet respectively, and the flow measuring component can be, for example, a flow meter 7, such as a rotor flow meter 7.

[0064] In an embodiment, the collecting member 1 can be, for example, a pipeline, and a strip-shaped opening is provided above the pipeline along the extension direction of the pipeline (here arranged as a horizontal direction) to connect to the accommodating portion inside the pipeline. The molten droplets can drip into the pipeline from the strip-shaped opening, thereby contacting the cooling water in the pipeline.

[0065] According to the measuring device provided in the embodiment of the present application, the number of welding bodies 2 can be multiple as described above, and the welding bodies 2 included in the measuring device include two welding bodies 2 arranged on both sides of the collecting member 1 in the horizontal direction, which has been mentioned in the above description and will not be repeated here.

[0066] According to the measuring device provided in the embodiment of the present application, the width of the gap formed by the two welding bodies 2 arranged on both sides of the collecting member 1 in the horizontal direction gradually increases from top to bottom. In this way, according to the measuring device provided in the embodiment of the present application, while the collecting member 1 is arranged between the two welding bodies 2, the aforementioned characteristics of the gap formed by the structure of the two welding bodies 2 themselves are utilized to ensure that the upper opening of the gap between the two welding bodies 2 has a smaller width, that is, the two welding bodies 2 can still maintain a relatively close distance at the upper opening of the gap, and the two welding bodies 2 will not be far apart due to the intervention of the collecting member 1 between the two welding bodies 2. In this way, the two welding bodies 2 that can still maintain a relatively close distance at the upper opening of the gap are conducive to ensuring the stability of the arc state between the welding material, thereby ensuring the accuracy of the measurement.

[0067] As an example, the cross section of each welding body 2 may be a right-angled trapezoid, and each welding body 2 may be formed as a right prism having a right-angled trapezoidal bottom surface, for example.

[0068] According to the measuring device provided in an embodiment of the present application, the width of the upper opening of the gap formed by the two welding bodies 2 arranged on either side of the collecting member 1 in the horizontal direction is 1.5 times the diameter of the welding wire 5, and the width of the upper opening is less than or equal to 10 mm. In the embodiment, the width of the upper opening of the gap is 1.5 times the diameter of the welding wire 5, which facilitates the passage of molten droplets through the gap without contacting the welding bodies 2. In actual operation, the size of molten droplets is often larger than the diameter of the welding wire 5.

[0069] In the embodiment, the width of the upper opening is less than or equal to 10 mm in order to avoid an unstable arc state. That is, if the width of the upper opening is greater than 10 mm, the distance between the two welding bodies 2 is relatively far.

[0070] According to the measuring device provided in the embodiment of the present application, the welding body 2 has a cooling path for circulating a circulating medium. The welding body 2 can be, for example, a water-cooled copper plate, which has a water-cooling pipeline inside and has corresponding water inlets and outlets. The collecting member 1 can also include a filter member 9 arranged at the outlet of the cooling medium. The filter member 9 can be used to block the molten droplets collected by the collecting member 1, thereby keeping all the molten droplets within the collecting member 1. On the one hand, the molten droplets can fully exchange heat, and on the other hand, it can also prevent the molten droplets from flowing to the remaining components on the downstream side of the collecting member 1, thereby protecting the remaining components on the downstream side.

[0071] In an embodiment, the filter structure can be, for example, a conical filter screen with its tip pointing in the direction of the cooling water flow, such as a filter screen made of stainless steel with a mesh size of at least 60 to ensure that the molten droplets can be retained in the collecting member 1 .

[0072] In an embodiment, the collecting member 1 is formed as a substantial calorimetric water cooling tank, which can be made of ultra-low thermal conductivity ceramic (to reduce heat loss) and shaped as a cylindrical pipe. In an embodiment, the length of the molten droplet collecting window formed on the collecting member 1 can be longer than the longest welding distance. A ceramic baffle higher than the pipe can be installed around the molten droplet collecting window to prevent the cooling water from overflowing. In addition, a level gauge 8 can be installed on the calorimetric water cooling tank to prevent it from tilting and causing the cooling water to overflow from the molten droplet collecting window. In addition, the collecting member 1 can be placed on the strip-shaped insulating base 3 with an arc-shaped recess to ensure stability.

[0073] According to the technical features described above, the following will specifically describe the use process of the measuring device.

[0074] Two copper water cooling plates in the measuring system are placed side by side and connected to the same pole of the welding power supply 4. According to the diameter of the welding wire 5, a gap is left between the two copper water cooling plates. The molten droplet calorimetric water cooling tank (collecting member 1) is placed below the gap and is horizontally calibrated.

[0075] The water outlets and inlets of all copper water cooling plates are connected, the cooling water valve is opened, and the copper water cooling plates are in a cooling state. The monitoring system (including the temperature monitor and the flow meter 7) is turned on, the flow data is collected through the rotor flow meter 7 of the outlet of the calorimetric water cooling tank, and the flow data is recorded after ensuring that the cooling water flow is stable. The water temperature data is collected in real time through the temperature monitors of the outlets and inlets of the calorimetric water cooling tank and is recorded.

[0076] The welding wire 5 electrode is placed above the gap, the welding wire 5 is electrically connected to the other pole of the power supply 4, the welding power supply 4 is turned on, and an electric arc is formed between the welding wire 5 and the two copper water cooling plates. Heat acts on the copper water cooling plates and is taken away by the cooling water. After the circuit is connected, the welding is performed from one end to the other end along the gap direction, and then the power is turned off to extinguish the arc. The monitoring device (with timing function) is used to record the welding start time t0 and the welding end time t1, which are in seconds (s).

[0077] The welding wire 5 melts under the action of the heat of the electric arc and forms a molten droplet at the tip. The molten droplet falls into the calorimetric water cooling tank through the gap between the two copper water cooling plates. The heat carried by the molten droplet is transferred to the cooling water in the calorimetric water cooling tank and is taken away.

[0078] The total heat carried by the molten droplet is calculated based on the data collected by the flow meter 7 and the temperature monitor of the outlet and inlet of the calorimetric water cooling tank, and then the molten droplet heat efficiency is calculated in combination with the total power of the circuit.

[0079] The above are only preferred embodiments of the present application and do not limit the scope of protection of the present application. All equivalent structural transformations made based on the contents of the present application specification and drawings under the innovative concept of the present application, or direct / indirect application in other related technical fields are included in the scope of protection of the present application.

Claims

1. A method for measuring the thermal efficiency of a consumable electrode welding droplet, characterized in that: include: Simulate welding between the welding material and the water-cooled copper plate to melt the welding material into molten droplets that can drip from the welding material; Collect the dripping molten droplets and use the cooling medium to exchange heat with the collected molten droplets; Calculate the total heat of the collected droplets absorbed by the cooling medium and compare the total heat with the total electrical energy consumed during the welding process to obtain the droplet thermal efficiency; The collecting of the dripping molten droplets and exchanging heat with the collected molten droplets using a cooling medium comprises: The molten droplets dripping from the welding material are collected in a predetermined receiving section, and the cooling medium flows through the predetermined receiving section; Among them, the first temperature of the cooling medium at the position where the cooling medium enters the predetermined accommodation section, the second temperature of the cooling medium at the position where the cooling medium flows out of the predetermined accommodation section, and the flow rate of the cooling medium at the position where the cooling medium flows out of the predetermined accommodation section are obtained, and the total heat of the collected molten droplets is calculated based on the first temperature, the second temperature and the flow rate.

2. The measuring method according to claim 1, wherein The collecting of the dripping molten droplets and using a cooling medium to exchange heat with the collected molten droplets includes: using a cooling medium to accommodate the molten droplets dripping from the welding material.

3. The measuring method according to claim 1, wherein: Also includes: During the welding process, the welding body is cooled.

4. The measuring method according to claim 1, wherein Also includes: The reference plane is determined by the position of the welding material, and an even number of welding bodies are arranged on both sides of the reference plane, with each side of the reference plane having the same number of welding bodies.

5. The measuring method according to claim 4, characterized in that Also includes: The welding bodies on both sides of the reference plane are arranged so that a gap is formed between the welding bodies on both sides of the reference plane, and molten droplets dripping from the welding material are collected from below an upper opening of the gap.

6. A device for measuring the thermal efficiency of a consumable electrode welding droplet, characterized in that: The melting electrode welding droplet thermal efficiency measuring device is used to perform the melting electrode welding droplet thermal efficiency measuring method according to any one of claims 1 to 5, and the melting electrode welding droplet thermal efficiency measuring device includes: A power source including a first electrode and a second electrode, wherein the first electrode is configured to be electrically connected to the welding material; a welding body electrically connected to the second electrode, for welding the welding material and the welding body to melt the welding material; a collecting member disposed below the welding material, the collecting member being used to collect molten droplets dripping from the welding material, the collecting member having a receiving portion, the receiving portion being used to circulate and receive a cooling medium to exchange heat with the molten droplets collected in the receiving portion; the receiving portion having a cooling medium inlet and a cooling medium outlet; a first temperature measuring member and a second temperature measuring member, respectively disposed at the cooling medium inlet and the cooling medium outlet, and respectively measuring a first temperature of the cooling medium at the cooling medium inlet and a second temperature of the cooling medium at the cooling medium outlet; The flow measurement component is provided at the cooling medium outlet to measure the flow of the cooling medium at the cooling medium outlet.

7. The measuring device according to claim 6, characterized in that There are a plurality of welding bodies, and the welding bodies included in the measuring device include two welding bodies arranged on both sides of the collecting member in a horizontal direction.

8. The measuring device according to claim 7, characterized in that The width of the gap formed by the two welding bodies arranged on both sides of the collecting member in the horizontal direction gradually increases from top to bottom; The width of the upper opening of the gap formed by the two welding bodies arranged on both sides of the collecting member in the horizontal direction is 1.5 times the diameter of the welding wire, and the width of the upper opening is less than or equal to 10 mm.

9. The measuring device according to claim 6, characterized in that The welding body has a cooling path for circulating a circulating medium; The collecting member further includes a filter member disposed at the cooling medium outlet, and the filter member is used to block the molten droplets collected by the collecting member.

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