CN113894464A - Preparation method of welding electrode for hot-strength steel and quality inspection tool - Google Patents
Preparation method of welding electrode for hot-strength steel and quality inspection tool Download PDFInfo
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- CN113894464A CN113894464A CN202111202068.4A CN202111202068A CN113894464A CN 113894464 A CN113894464 A CN 113894464A CN 202111202068 A CN202111202068 A CN 202111202068A CN 113894464 A CN113894464 A CN 113894464A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/24—Selection of soldering or welding materials proper
- B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
- B23K35/3053—Fe as the principal constituent
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
- B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
- B23K35/36—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest
- B23K35/3601—Selection of non-metallic compositions, e.g. coatings, fluxes; Selection of soldering or welding materials, conjoint with selection of non-metallic compositions, both selections being of interest with inorganic compounds as principal constituents
- B23K35/3602—Carbonates, basic oxides or hydroxides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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Abstract
The invention discloses a preparation method of a welding rod of a thermal-strength steel and a quality inspection tool thereof, and relates to the technical field of quality inspection of welding rod production, wherein the welding rod comprises a core wire and a coating wrapped on the peripheral surface of the core wire, and the method comprises the following steps of 1, preparing a coating raw material and the core wire, wherein the coating raw material comprises the following components in parts by weight: 25-40 parts of calcium carbonate, 10-15 parts of fluoride, 2-5 parts of titanium dioxide, 2-5 parts of silicon dioxide, 2-6 parts of potassium feldspar, 1-3 parts of ferrotitanium, 2-6 parts of medium-carbon ferromanganese, 2-5 parts of ferrosilicon, 3-6 parts of carbon ferrochrome, 2-4 parts of nickel powder, 2-4 parts of copper powder, 0.5-1 part of sodium alginate, 20-30 parts of iron powder and strip-shaped carbon steel serving as a welding core; and 2, stirring the coating raw materials, putting the coating raw materials into a container, pouring water glass into the container, and uniformly stirring the mixture. The welding electrode of the hot-strength steel provided by the invention can be used for repair welding of cast important parts of a turbine tester, and the components, the color and other properties of the welding electrode meet the design requirements.
Description
Technical Field
The invention relates to the technical field of quality inspection of welding rod production, in particular to a preparation method of a welding rod for hot-strength steel and a quality inspection tool.
Background
The welding electrode is a welding material of medium alloy steel, is usually used for heat-resistant steel structures, is usually used for overheating pipelines, heaters, end sockets and valves of high-temperature and high-pressure boiler power stations, petroleum refining equipment and other equipment due to excellent high-temperature strength and high-temperature creep resistance, and is also used as an important part of aero-engines.
When the hot-strength steel welding electrode prepared at present is applied to repair welding after casting of heavy components of a turbine tester, various performances after repair welding cannot be met due to different color and luster and heat treatment specifications of external components, and in addition, the welding electrode is generally required to be subjected to hardness or elasticity quality inspection after the hot-strength steel welding electrode is prepared, but no professional quality inspection device is used for clamping the welding electrode during quality inspection at present, and manual handling is often required for performing quality inspection operation on the welding electrode.
Disclosure of Invention
The invention mainly aims to provide a preparation method and a quality inspection tool for welding electrodes of hot-strength steel, provides a welding electrode of hot-strength steel with good components and good color and luster, and further provides a device for welding electrodes of hot-strength steel.
The purpose of the invention can be achieved by adopting the following technical scheme:
a process for preparing the welding electrode of hot-strength steel with core wire and coating on the external surface of core wire includes such steps as
Step 1, preparing a coating raw material and a welding core, wherein the coating raw material comprises the following components in parts by weight: 25-40 parts of calcium carbonate, 10-15 parts of fluoride, 2-5 parts of titanium dioxide, 2-5 parts of silicon dioxide, 2-6 parts of potassium feldspar, 1-3 parts of ferrotitanium, 2-6 parts of medium-carbon ferromanganese, 2-5 parts of ferrosilicon, 3-6 parts of carbon ferrochrome, 2-4 parts of nickel powder, 2-4 parts of copper powder, 0.5-1 part of sodium alginate, 20-30 parts of iron powder and strip-shaped carbon steel serving as a welding core;
and 6, detecting a finished welding rod product, taking out the dried welding rod product, cooling, clamping the welding rod product by using a quality inspection tool after the welding rod product is cooled to normal temperature in a room, slowly extruding the welding rod product after the welding rod product is stably clamped, detecting surface cracks of the welding rod product in real time in the extrusion process, completing detection after the welding rod product is extruded to a preset degree, if the size and the quantity of the surface cracks of the current welding rod product after being extruded reach a preset range, enabling the quality of the welding rod product of the batch to reach the standard, and if the size and the quantity of the surface cracks of the current welding rod product after being extruded reach the preset range, enabling the quality of the welding rod product of the batch to not reach the standard, and recycling the welding rod product.
Preferably, in step 5, the length of the sheath on the core wire is at least four fifths of the length of the core wire.
A quality inspection tool for detecting welding electrodes of hot-strength steel comprises two supporting plates which are oppositely distributed, two hanging plates which are oppositely distributed are arranged between the two supporting plates, an extrusion plate is connected to the bottom of each hanging plate in a sliding mode, the two extrusion plates are used for stabilizing the welding electrodes, a crack detection assembly is arranged at the joint of the two hanging plates and used for detecting surface cracks of the welding electrodes between the two extrusion plates in real time, two first extrusion assemblies which are oppositely distributed are further arranged between the two supporting plates and used for enabling the two extrusion plates to be close to or far away from each other so that the welding electrodes can be extruded when the two extrusion plates are close to each other, a protection plate penetrates through the side face of one extrusion plate, a second extrusion assembly is arranged between one end of the protection plate and one of the supporting plates and used for receiving signal data of the crack detection assembly, and control the flexible of guard plate according to the data that receive to make the other end of guard plate support to crack determine module's below, avoid the piece that the welding electrode produced in extrusion process to collapse to crack determine module.
Preferably, the first extrusion assembly comprises a hydraulic cylinder assembly fixed on one side surface of the supporting plate and a connecting rod fixed at one end of the hydraulic cylinder assembly, and the connecting rod is fixedly connected with the extrusion plate.
Preferably, the second extrusion subassembly is including cylinder and the control unit, the one end fixed connection of cylinder in the guard plate, the control unit is used for receiving crack determine module's signal and controls the flexible of cylinder, and if the welding electrode surface crack width that crack determine module detected reaches the predetermined range, then the control unit control cylinder stretches out, makes the guard plate keep off in crack determine module's bottom.
Preferably, the bottom of stripper plate is provided with stores the box, store the box including the box body, the storing groove has been seted up to the top surface of box body, the spout has been seted up along the length direction of box body to the tip of box body, the height of spout equals with the height of box body, the slot has been seted up to the bottom face of stripper plate, slot and spout crisscross setting, and the stripper plate with store sliding connection between the box.
Preferably, the protection plate is arranged between the crack detection assembly and the storage box, and the position of the welding rod when the welding rod is positioned between the two extrusion plates is lower than that of the protection plate.
The invention has the beneficial technical effects that:
1. the welding electrode of the hot-strength steel provided by the invention can be used for repair welding of cast important parts of a turbine tester, and the components, the color and other properties of the welding electrode meet the design requirements.
2. The quality inspection tool provided by the invention can extrude the welding rod to enable the welding rod to be in a bending state, the strength of the welding rod is tested, the welding seam on the surface of the welding rod is detected by using the crack detection assembly in the process of extruding the welding rod, and in addition, the protection plate and the second extrusion assembly are matched for use, so that the phenomenon that the core wire fragments are cracked to the crack detection assembly after the welding rod is cracked can be effectively prevented, and the safety of the crack detection assembly is effectively improved.
Drawings
FIG. 1 is a schematic perspective view of a tool according to an embodiment of the invention;
fig. 2 is a schematic perspective view of a storage box according to an embodiment of the present invention;
FIG. 3 is a schematic perspective view of an extruded sheet according to an embodiment of the present invention;
fig. 4 is a schematic front view of a tool according to an embodiment of the present invention.
In the figure: 1-supporting plate, 2-hanging plate, 3-extrusion plate, 4-storage box, 401-box body, 402-sliding groove, 403-storage groove, 5-slot, 6-crack detection assembly, 7-protection plate, 8-hydraulic oil cylinder assembly and 9-connecting rod.
Detailed Description
In order to make the technical solutions of the present invention more clear and definite for those skilled in the art, the present invention is further described in detail below with reference to the examples and the accompanying drawings, but the embodiments of the present invention are not limited thereto.
As shown in FIGS. 1-4, the method for manufacturing a welding electrode of a hot-strength steel according to this embodiment, which includes a core wire and a coating covering the outer circumference of the core wire, includes the following steps
Step 1, preparing a coating raw material and a welding core, wherein the coating raw material comprises the following components in parts by weight: 25-40 parts of calcium carbonate, 10-15 parts of fluoride, 2-5 parts of titanium dioxide, 2-5 parts of silicon dioxide, 2-6 parts of potassium feldspar, 1-3 parts of ferrotitanium, 2-6 parts of medium-carbon ferromanganese, 2-5 parts of ferrosilicon, 3-6 parts of carbon ferrochrome, 2-4 parts of nickel powder, 2-4 parts of copper powder, 0.5-1 part of sodium alginate, 20-30 parts of iron powder and strip-shaped carbon steel serving as a welding core;
and 6, detecting a finished welding rod product, taking out the dried welding rod product, cooling, clamping the welding rod product by using a quality inspection tool after the welding rod product is cooled to normal temperature in a room, slowly extruding the welding rod product after the welding rod product is stably clamped, detecting surface cracks of the welding rod product in real time in the extrusion process, completing detection after the welding rod product is extruded to a preset degree, if the size and the quantity of the surface cracks of the current welding rod product after being extruded reach a preset range, enabling the quality of the welding rod product of the batch to reach the standard, and if the size and the quantity of the surface cracks of the current welding rod product after being extruded reach the preset range, enabling the quality of the welding rod product of the batch to not reach the standard, and recycling the welding rod product.
In this embodiment, as shown in fig. 1, the length of the sheath on the core wire in step 5 is at least four fifths of the core wire.
A quality inspection tool for detecting welding electrodes of hot-strength steel comprises two oppositely-distributed supporting plates 1, two oppositely-distributed hanging plates 2 are arranged between the two supporting plates 1, the hanging plates 2 can be horizontally inclined, the hanging plates 2 are fixedly connected with the supporting plates 1, extrusion plates 3 are connected to the bottoms of the hanging plates 2 in a sliding mode and can slide horizontally and obliquely, the two extrusion plates 3 are used for stably clamping the welding electrodes, a crack detection assembly 6 is arranged at the joint of the two hanging plates 2, the crack detection assembly 6 can be an ultrasonic crack detector and is used for detecting surface cracks of the welding electrodes between the two extrusion plates 3 in real time and transmitting detection data to a control unit of a second extrusion assembly, two oppositely-distributed first extrusion assemblies are further arranged between the two supporting plates 1 and are used for enabling the two extrusion plates 3 to be close to or far away from each other, so that the welding electrodes are extruded when the two extrusion plates 3 are close to each other, the welding electrodes are gradually bent in the extrusion process, the current hardness of the welding electrodes can be obtained according to the bending degree, if the welding electrodes are bent to a certain degree and the current macroscopic cracks are less than a certain number, the welding electrodes of the current batch meet the factory requirements, the residual welding electrodes of the same batch can directly leave the factory without secondary quality inspection,
if current welding electrode quality is not feasible, the cracked condition can appear in extrusion process, the coating on core wire surface can outwards splash, the coating that splashes is probably can collide crack determine module 6, consequently, detect that crack width reaches predetermined range when crack determine module 6, then the control unit control cylinder stretches out, make guard plate 7 keep off in crack determine module 6's bottom, guard plate 7 has been run through to the side of one of them stripper plate 3, be provided with the second extrusion subassembly between one end of guard plate 7 and one of them backup pad 1, the second extrusion subassembly is used for receiving crack determine module 6's signal data, and control guard plate 7's flexible according to the data of receiving, so that the other end of guard plate 7 supports the below of crack determine module 6, avoid the piece that the welding electrode produced in extrusion process to collapse to crack determine module 6.
In this embodiment, as shown in fig. 1 to 4, the first pressing component includes a hydraulic cylinder component 8 fixed on one side of the supporting plate 1 and a connecting rod 9 fixed on one end of the hydraulic cylinder component 8, and the connecting rod 9 is fixedly connected with the pressing plate 3.
In this embodiment, as shown in fig. 1-4, the second extrusion assembly includes a cylinder and a control unit, one end of the cylinder is fixedly connected to the protection plate 7, the control unit is used for receiving the signal of the crack detection assembly 6 and controlling the expansion and contraction of the cylinder, and if the width of the surface crack of the welding electrode detected by the crack detection assembly 6 reaches a predetermined range, the control unit controls the cylinder to extend out, so that the protection plate 7 is blocked at the bottom of the crack detection assembly 6.
In this embodiment, as shown in fig. 1 to 4, the bottom of the extrusion plate 3 is provided with a storage box 4, the storage box 4 includes a box body 401, a storage groove 403 has been opened on the top surface of the box body 401, a sliding groove 402 has been opened along the length direction of the box body 401 at the end of the box body 401, the height of the sliding groove 402 is equal to the height of the box body 401, a slot 5 has been opened at the bottom end surface of the extrusion plate 3, the slot 5 and the sliding groove 402 are staggered, and the extrusion plate 3 and the storage box 4 are connected in a sliding manner, so that it can be ensured that the welding rod is extruded excessively, the chips on the welding rod can directly fall on the storage box 4, and the welding rod is not influenced by the displacement of the extrusion plate 3, and the disposable collection of the medicine skin chips is ensured.
In this embodiment, as shown in fig. 1 to 4, the protection plate 7 is disposed between the crack detection assembly 6 and the storage box 4, and the position of the welding electrode when being located between the two extrusion plates 3 is lower than the position of the protection plate 7, so as to achieve a good protection effect.
To sum up, in this embodiment, the quality testing frock that this embodiment provided can extrude the welding rod, makes the welding rod be in the bending state, carries out intensity test to the welding rod to utilize crack detection subassembly to detect the welding seam on welding rod surface at extrusion welding rod in-process, the cooperation between protection plate and the second extrusion subassembly in addition can effectively prevent that the welding rod bursts out the back core wire piece and bursts out to crack detection subassembly, the effectual security that has improved crack detection subassembly self.
The above description is only for the purpose of illustrating the present invention and is not intended to limit the scope of the present invention, and any person skilled in the art can substitute or change the technical solution of the present invention and its conception within the scope of the present invention.
Claims (7)
1. A method for preparing a welding rod of heat-strength steel comprises a core wire and a coating wrapped on the outer peripheral surface of the core wire, and is characterized in that: comprises the following steps
Step 1, preparing a coating raw material and a welding core, wherein the coating raw material comprises the following components in parts by weight: 25-40 parts of calcium carbonate, 10-15 parts of fluoride, 2-5 parts of titanium dioxide, 2-5 parts of silicon dioxide, 2-6 parts of potassium feldspar, 1-3 parts of ferrotitanium, 2-6 parts of medium-carbon ferromanganese, 2-5 parts of ferrosilicon, 3-6 parts of carbon ferrochrome, 2-4 parts of nickel powder, 2-4 parts of copper powder, 0.5-1 part of sodium alginate, 20-30 parts of iron powder and strip-shaped carbon steel serving as a welding core;
step 2, stirring the coating raw materials, putting the coating raw materials into a container, pouring water glass into the container, and uniformly stirring the mixture;
step 3, detecting the stirred coating raw materials, detecting the humidity of the stirred materials after the coating raw materials are stirred in a container, presetting a humidity range, if the humidity is lower than the preset range, continuing to add water glass, and if the humidity is higher than the preset range, continuing to add the raw materials until the final humidity of the stirred materials is in the preset humidity range;
step 4, coating the flux-coating, namely conveying the flux-coating stirring material with proper humidity to a bar press to coat the flux-coating on the welding core;
step 5, drying, namely conveying the welding core wrapped with the flux coating to a drying box, and drying for at least 45 minutes at the temperature of 380 ℃ to obtain a finished product of the welding electrode;
and 6, detecting a finished welding rod product, taking out the dried welding rod product, cooling, clamping the welding rod product by using a quality inspection tool after the welding rod product is cooled to normal temperature in a room, slowly extruding the welding rod product after the welding rod product is stably clamped, detecting surface cracks of the welding rod product in real time in the extrusion process, completing detection after the welding rod product is extruded to a preset degree, if the size and the quantity of the surface cracks of the current welding rod product after being extruded reach a preset range, enabling the quality of the welding rod product of the batch to reach the standard, and if the size and the quantity of the surface cracks of the current welding rod product after being extruded reach the preset range, enabling the quality of the welding rod product of the batch to not reach the standard, and recycling the welding rod product.
2. A method of manufacturing a welding electrode for hot-strength steel according to claim 1, characterized in that: in the step 5, the length of the coating on the core wire is at least four fifths of the length of the core wire.
3. A quality inspection frock that is used for detecting according to the hot strength steel welding electrode that claim 1~2 obtained, its characterized in that: comprises two opposite supporting plates (1), two hanging plates (2) which are oppositely distributed are arranged between the two supporting plates (1), each bottom of each hanging plate (2) is connected with an extrusion plate (3) in a sliding way, the two extrusion plates (3) are used for stabilizing a welding rod, a crack detection assembly (6) is arranged at the joint of the two hanging plates (2) and is used for detecting the surface cracks of the welding rod between the two extrusion plates (3) in real time, two first extrusion assemblies which are oppositely distributed are also arranged between the two supporting plates (1) and are used for enabling the two extrusion plates (3) to be close to each other or be far away from each other so as to extrude the welding rod when the two extrusion plates (3) are close to each other, a protective plate (7) penetrates through the side surface of each extrusion plate (3), one end of the protective plate (7) and one of the second extrusion assemblies are arranged between the supporting plates (1), the second extrusion subassembly is used for receiving the signal data of crack determine module (6) to control the flexible of guard plate (7) according to the data of receiving, so that the other end of guard plate (7) supports the below to crack determine module (6), avoids the piece that the welding electrode produced at the extrusion in-process to collapse crack determine module (6).
4. The quality inspection tool according to claim 3, characterized in that: the first extrusion assembly comprises a hydraulic oil cylinder assembly (8) fixed on one side face of the supporting plate (1) and a connecting rod (9) fixed at one end of the hydraulic oil cylinder assembly (8), and the connecting rod (9) is fixedly connected with the extrusion plate (3).
5. The quality inspection tool according to claim 3, characterized in that: second extrusion subassembly is including cylinder and the control unit, the one end fixed connection of cylinder in guard plate (7), the control unit is used for receiving the signal of crack determine module (6) and controls the flexible of cylinder, and if the welding electrode surface crack width that crack determine module (6) detected reaches the predetermined range, then the control unit control cylinder stretches out, makes guard plate (7) keep off in the bottom of crack determine module (6).
6. The quality inspection tool according to claim 3, characterized in that: the bottom of stripper plate (3) is provided with and stores box (4), store box (4) including box body (401), storing groove (403) have been seted up to the top surface of box body (401), spout (402) have been seted up along the length direction of box body (401) to the tip of box body (401), the height of spout (402) and the height equivalence of box body (401), slot (5) have been seted up to the bottom face of stripper plate (3), slot (5) and spout (402) crisscross setting, and stripper plate (3) and store sliding connection between box (4).
7. The quality inspection tool according to claim 5, characterized in that: the protection plate (7) is arranged between the crack detection assembly (6) and the storage box (4), and the position of the welding electrode when the welding electrode is positioned between the two extrusion plates (3) is lower than the position of the protection plate (7).
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| CN202111202068.4A CN113894464B (en) | 2021-10-15 | 2021-10-15 | Preparation method of hot-strength steel welding electrode and quality inspection tool |
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| CN113894464B (en) | 2023-04-21 |
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