High-toughness and high-strength gas shielded solid welding wire

Abstract

The utility model relates to the technical field of welding wires, and discloses a high-toughness and high-strength gas shield solid welding wire which comprises a reinforced core layer, a high-toughness alloy layer, a heat insulation protection layer and a wear-resistant protection layer, and a welding wire body is of a multi-layer composite structure. The ceramic layer has good high temperature resistance and can preliminarily isolate high temperature generated during welding; the aerogel heat insulation layer further enhances the heat insulation effect, and heat is difficult to transfer due to the unique micropore structure of the aerogel heat insulation layer; the metal outer layer provides additional mechanical protection and facilitates uniform distribution of heat, the three-layer composite structure acts jointly, the internal structure of the welding wire is effectively protected against high-temperature damage, and the stability of the welding process and the quality of a welding seam are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of welding wires, in particular to a high-toughness and high-strength gas-shielded solid welding wire. Background Art

[0002] With the rapid development of industrial technology, particularly in fields such as aerospace, marine engineering, and the energy industry, the performance requirements for welded joints are becoming increasingly stringent. Conventional welding wires often struggle to achieve both high strength, high toughness, and good heat dissipation during welding, leading to defects such as thermal cracking and deformation in welded joints, which impact the safety and service life of the overall structure. Therefore, the development of a high-toughness, high-strength gas-shielded solid welding wire is particularly important. To this end, we have developed a high-toughness, high-strength gas-shielded solid welding wire. Utility Model Content

[0003] (1) Technical problems solved

[0004] In view of the deficiencies in the prior art, the utility model provides a high-toughness and high-strength gas-shielded solid welding wire, which solves the above-mentioned problems.

[0005] (2) Technical solution

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a high-toughness and high-strength gas-shielded solid welding wire, comprising a strengthening core layer, a high-toughness alloy layer, a heat-insulating protective layer, and a wear-resistant protective layer. The welding wire body adopts a multi-layer composite structure, which comprises, from the inside to the outside, a strengthening core layer, a high-toughness alloy layer, a heat-insulating protective layer, and a wear-resistant protective layer, and further comprises:

[0007] The interior of the heat-insulating protective layer is composed of multiple layers of composite material, which can effectively isolate the high temperature during the welding process and protect the internal structure of the welding wire from heat damage.

[0008] Preferably, the strengthening core layer is made of low carbon steel.

[0009] Preferably, the high-toughness alloy layer is made of nickel-based alloy.

[0010] Preferably, the thermal insulation protective layer includes a ceramic layer, an aerogel thermal insulation layer and a metal outer layer, the outer surface of the ceramic layer is provided with an aerogel thermal insulation layer, and the side of the ceramic layer to the north of the aerogel thermal insulation layer is provided with a metal outer layer.

[0011] Preferably, the metal outer layer is made of copper alloy.

[0012] Preferably, the wear-resistant protective layer is arranged on a side of the heat-insulating protective layer away from the high-toughness alloy layer, and the wear-resistant protective layer is made of tungsten carbide.

[0013] (3) Beneficial effects

[0014] Compared with the prior art, the present invention provides a high-toughness and high-strength gas shielded solid welding wire with the following beneficial effects:

[0015] 1. This high-toughness and high-strength gas-shielded solid welding wire has a ceramic layer with good high-temperature resistance, which can initially isolate the high temperature generated during welding; the aerogel insulation layer further enhances the thermal insulation effect, and its unique microporous structure makes it difficult for heat to transfer; the metal outer layer provides additional mechanical protection and helps to evenly distribute heat. The three-layer composite structure works together to effectively protect the internal structure of the welding wire from high-temperature damage, ensuring the stability of the welding process and the quality of the weld.

[0016] 2. The wear-resistant protective layer of this high-toughness and high-strength gas-shielded solid welding wire is made of tungsten carbide, which is a very wear-resistant material. During the welding process, the wear-resistant protective layer can resist external wear and impact, protecting the welding wire from damage during transportation, storage and use, thereby extending the service life of the welding wire and maintaining its excellent welding performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the utility model;

[0019] Figure 3 It is a schematic cross-sectional view of the structure of the utility model.

[0020] In the figure: 1. Strengthened core layer; 2. High-toughness alloy layer; 3. Thermal insulation protective layer; 4. Wear-resistant protective layer; 5. Ceramic layer; 6. Aerogel insulation layer; 7. Metal outer layer. DETAILED DESCRIPTION

[0021] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figure 1-3 A high-toughness and high-strength gas-shielded solid welding wire comprises a strengthening core layer 1, a high-toughness alloy layer 2, a heat-insulating protective layer 3, and a wear-resistant protective layer 4. The welding wire body is composed of a multi-layer composite structure, which comprises the strengthening core layer 1, the high-toughness alloy layer 2, the heat-insulating protective layer 3, and the wear-resistant protective layer 4 from the inside to the outside. It also includes:

[0023] The interior of the heat-insulating protective layer 3 is composed of multiple layers of composite material, which can effectively isolate the high temperature during welding and protect the internal structure of the welding wire from heat damage.

[0024] Furthermore, the strengthening core layer 1 is made of low carbon steel.

[0025] Furthermore, the material of the high-toughness alloy layer 2 is nickel-based alloy.

[0026] Furthermore, the thermal insulation protective layer 3 includes a ceramic layer 5, an aerogel insulation layer 6 and a metal outer layer 7. The outer surface of the ceramic layer 5 is provided with an aerogel insulation layer 6, and the metal outer layer 7 is provided on one side of the ceramic layer 5 to the north of the aerogel insulation layer 6; the ceramic layer 5 has good high temperature resistance and can preliminarily isolate the high temperature generated during welding; the aerogel insulation layer 6 further enhances the thermal insulation effect, and its unique microporous structure makes it difficult for heat to be transferred; the metal outer layer 7 provides additional mechanical protection and helps to evenly distribute heat. The three-layer composite structure works together to effectively protect the internal structure of the welding wire from high temperature damage, ensuring the stability of the welding process and the quality of the weld.

[0027] Furthermore, the metal outer layer 7 is made of copper alloy.

[0028] Furthermore, a wear-resistant protective layer 4 is arranged on the side of the thermal insulation protective layer 3 away from the high-toughness alloy layer 2, and the wear-resistant protective layer 4 is made of tungsten carbide; the outermost wear-resistant protective layer 4 is made of tungsten carbide, which is a highly wear-resistant material. During the welding process, the wear-resistant protective layer 4 can resist external wear and impact, and protect the welding wire from damage during transportation, storage and use, thereby extending the service life of the welding wire and maintaining its excellent welding performance.

[0029] Working principle: The role of the strengthening core layer 1, as the core of the welding wire, the strengthening core layer 1 is made of low-carbon steel, providing good basic strength and welding performance. During the welding process, the strengthening core layer 1 can stably melt and provide sufficient filler metal to ensure the strength and integrity of the weld. The high-toughness alloy layer 2 is strengthened. The high-toughness alloy layer 2 wrapped outside the strengthening core layer 1 is made of nickel-based alloy. This layer of material has excellent toughness and crack resistance. During welding, the high-toughness alloy layer 2 can effectively resist the generation of welding stress and thermal cracks, and improve the overall toughness and durability of the weld. The thermal insulation effect of the thermal insulation protective layer 3: The thermal insulation protective layer 3 is a key layer in the welding wire structure. It consists of a ceramic layer 5, an aerogel insulation layer 6 and a metal outer layer 7. The ceramic layer 5 has good high-temperature resistance and can initially isolate the high temperature generated during welding; the aerogel insulation layer 6 further enhances the thermal insulation effect, and its unique microporous structure makes it difficult for heat to be transferred; the metal outer layer 7 provides additional mechanical protection and helps to evenly distribute heat. The three-layer composite structure works together to effectively protect the internal structure of the welding wire from high-temperature damage, ensuring the stability of the welding process and the quality of the weld. The protective effect of the wear-resistant protective layer 4 is that the outermost wear-resistant protective layer 4 is made of tungsten carbide, which is a highly wear-resistant material. During the welding process, the wear-resistant protective layer 4 can resist external wear and impact, protecting the welding wire from damage during transportation, storage and use, thereby extending the service life of the welding wire and maintaining its excellent welding performance. Through its multi-layer composite structure design, high strength, high toughness and excellent thermal insulation and wear resistance are achieved during the welding process. In a gas-shielded welding environment, the welding wire can stably melt and fill the weld to form a high-quality, high-strength welded joint to meet the needs of various complex welding conditions.

[0030] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-toughness and high-strength gas-shielded solid welding wire, comprising a strengthening core layer (1), a high-toughness alloy layer (2), a heat-insulating protective layer (3) and a wear-resistant protective layer (4), wherein the welding wire body is composed of a multi-layer composite structure, which comprises the strengthening core layer (1), the high-toughness alloy layer (2), the heat-insulating protective layer (3) and the wear-resistant protective layer (4) from the inside to the outside, and is characterized in that: Also includes: The interior of the heat-insulating protective layer (3) is composed of multiple layers of composite material, which can effectively isolate the high temperature during the welding process and protect the internal structure of the welding wire from heat damage.

2. The high-toughness and high-strength gas shielded solid welding wire according to claim 1, characterized in that: The strengthening core layer (1) is made of low carbon steel.

3. The high-toughness and high-strength gas shielded solid welding wire according to claim 1, characterized in that: The material of the high-toughness alloy layer (2) is a nickel-based alloy.

4. The high-toughness and high-strength gas shielded solid welding wire according to claim 1, characterized in that: The thermal insulation protective layer (3) comprises a ceramic layer (5), an aerogel thermal insulation layer (6) and a metal outer layer (7), wherein the outer surface of the ceramic layer (5) is provided with the aerogel thermal insulation layer (6), and the metal outer layer (7) is provided on one side of the ceramic layer (5) to the north of the aerogel thermal insulation layer (6).

5. The high-toughness and high-strength gas shielded solid welding wire according to claim 4, characterized in that: The metal outer layer (7) is made of copper alloy.

6. The high-toughness and high-strength gas shielded solid welding wire according to claim 1, characterized in that: The wear-resistant protective layer (4) is arranged on a side of the heat-insulating protective layer (3) that is away from the high-toughness alloy layer (2), and the wear-resistant protective layer (4) is made of tungsten carbide.

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