Flux-cored wire forming machine and flux-cored wire forming process

Abstract

The invention discloses a flux-cored wire forming machine and a flux-cored wire forming process, and mainly relates to the field of flux-cored wire forming machines. The flux-cored wire forming machine comprises a steel strip U-groove rolling device and a joint closing device, and further comprises a first powder adding machine and a second powder adding machine. The flux-cored wire forming machine and the flux-cored wire forming process have the beneficial effects that the problems that in the powder filling process of a slag-free self-protection flux-cored wire, due to the fact that the density of graphite powder is smaller than that of metal powder, powder mixing is not uniform, and graphite powder in the wire is not uniformly distributed are solved; and the graphite powder and other powder are filled into the wire, the filling rate dispersion coefficient of the wire becomes small, graphite filling is more uniform, and the quality of the wire is effectively improved.

Description

technical field

[0001] The application relates to the field of flux-cored welding wire forming machines, in particular to a flux-cored welding wire forming machine and a flux-cored welding wire forming process. Background technique

[0002] Flux-cored wire is also called flux-cored wire and tubular wire. The surface of flux-cored wire is the same as that of solid wire. It is made of low-carbon steel or low-alloy steel with good plasticity. The manufacturing method is to roll the steel strip into U-shaped cross-sectional shape, then fill the solder powder prepared according to the dosage into the U-shaped steel strip, roll the U-shaped steel strip to join the joint, and finally make flux-cored wires of different specifications by drawing.

[0003] Among flux-cored wires, slag-free self-shielding flux-cored wire is a new type of welding material developed in recent years. It has the advantages of high welding efficiency and no need to knock slag after welding, which meets the ...

Examples

Embodiment 1

[0026] Embodiment 1: Flux-cored welding wire forming machine, the main structure includes a steel strip rolling U-groove device 1, a seam joint device 2, and also includes a first powder dosing machine 3, a second powder dosing machine 4, and a steel strip rolling U-groove device 1. The steel strip is rolled into a U-shaped steel strip, and the joint joint device 2 is used to joint the U-shaped steel strip filled with powder to form a tubular welding wire. Both the first powder dosing machine 3 and the second powder dosing machine 4 include a powder hopper 5, a powder feeding belt 6, and a servo transmission system. The powder hopper 5 is responsible for storing the powder to be added and sending the powder to the powder feeding belt 6. The powder feeding belt 6 fills the powder into the U-shaped steel belt, and the servo transmission system controls the movement of the powder feeding belt 6 to ensure that the powder feeding belt 6 fills the powder into the U-shaped steel belt ...

Embodiment 2

[0027] Embodiment 2: Flux-cored welding wire forming process, the first step is to change the flat steel strip into a U shape through the steel strip rolling U groove device 1;

[0028] In the second step, the graphite-free powder is added by the first powder feeding machine 3 in the U-shaped steel belt;

[0029] In the third step, graphite powder is added into the U-shaped steel belt by the second dosing powder machine 4. By weight, graphite powder accounts for 3% to 5% of the total content of the medicine powder, and the total filling rate is 42%. The filling rate error is from ± 0.5 %, improved to ±0.1%.

[0030] In the fourth step, the U-shaped steel strip forms a closed tubular welding wire through the joint device 2;

[0031] In the fifth step, the tubular welding wire is rolled into flux-cored welding wires of different diameters.

Embodiment 3

[0032] Embodiment 3: the first step, the flat steel strip becomes U shape through steel strip rolling U groove device 1;

[0033] In the second step, graphite powder is added by the second dosing powder machine 4 in the U-shaped steel belt,

[0034] The 3rd, in the U-shaped steel belt, add the medicine powder not containing graphite by the first medicine powder adding machine 3; By weight, graphite powder accounts for 3%~5% of the total content of medicine powder, and the filling rate of medicine powder is 42%, and the filling rate error is by ±0.5%, improved to ±0.1%.

[0035] In the fourth step, the U-shaped steel strip forms a closed tubular welding wire through the joint device 2;

[0036] In the fifth step, the tubular welding wire is rolled into flux-cored welding wires of different diameters.

technical field

[0001] The application relates to the field of flux-cored welding wire forming machines, in particular to a flux-cored welding wire forming machine and a flux-cored welding wire forming process. Background technique

[0002] Flux-cored wire is also called flux-cored wire and tubular wire. The surface of flux-cored wire is the same as that of solid wire. It is made of low-carbon steel or low-alloy steel with good plasticity. The manufacturing method is to roll the steel strip into U-shaped cross-sectional shape, then fill the solder powder prepared according to the dosage into the U-shaped steel strip, roll the U-shaped steel strip to join the joint, and finally make flux-cored wires of different specifications by drawing.

[0003] Among flux-cored wires, slag-free self-shielding flux-cored wire is a new type of welding material developed in recent years. It has the advantages of high welding efficiency and no need to knock slag after welding, which meets the ...

Examples

Embodiment 1

[0026] Embodiment 1: Flux-cored welding wire forming machine, the main structure includes a steel strip rolling U-groove device 1, a seam joint device 2, and also includes a first powder dosing machine 3, a second powder dosing machine 4, and a steel strip rolling U-groove device 1. The steel strip is rolled into a U-shaped steel strip, and the joint joint device 2 is used to joint the U-shaped steel strip filled with powder to form a tubular welding wire. Both the first powder dosing machine 3 and the second powder dosing machine 4 include a powder hopper 5, a powder feeding belt 6, and a servo transmission system. The powder hopper 5 is responsible for storing the powder to be added and sending the powder to the powder feeding belt 6. The powder feeding belt 6 fills the powder into the U-shaped steel belt, and the servo transmission system controls the movement of the powder feeding belt 6 to ensure that the powder feeding belt 6 fills the powder into the U-shaped steel belt ...

Embodiment 2

[0027] Embodiment 2: Flux-cored welding wire forming process, the first step is to change the flat steel strip into a U shape through the steel strip rolling U groove device 1;

[0028] In the second step, the graphite-free powder is added by the first powder feeding machine 3 in the U-shaped steel belt;

[0029] In the third step, graphite powder is added into the U-shaped steel belt by the second dosing powder machine 4. By weight, graphite powder accounts for 3% to 5% of the total content of the medicine powder, and the total filling rate is 42%. The filling rate error is from ± 0.5 %, improved to ±0.1%.

[0030] In the fourth step, the U-shaped steel strip forms a closed tubular welding wire through the joint device 2;

[0031] In the fifth step, the tubular welding wire is rolled into flux-cored welding wires of different diameters.

Embodiment 3

[0032] Embodiment 3: the first step, the flat steel strip becomes U shape through steel strip rolling U groove device 1;

[0033] In the second step, graphite powder is added by the second dosing powder machine 4 in the U-shaped steel belt,

[0034] The 3rd, in the U-shaped steel belt, add the medicine powder not containing graphite by the first medicine powder adding machine 3; By weight, graphite powder accounts for 3%~5% of the total content of medicine powder, and the filling rate of medicine powder is 42%, and the filling rate error is by ±0.5%, improved to ±0.1%.

[0035] In the fourth step, the U-shaped steel strip forms a closed tubular welding wire through the joint device 2;

[0036] In the fifth step, the tubular welding wire is rolled into flux-cored welding wires of different diameters.

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