1. The utility model provides an argon arc welds build-up welding and rolls extrusion integrated vibration material disk device after welding which characterized by: the welding wire welding device comprises a cross beam (1), a cross beam ear seat (2), an adjusting screw rod (3), a cross beam force arm (4), a force arm ear seat (5), a roller force arm (6), a roller (7) and a welding gun (9), wherein the cross beam force arm (4), the cross beam ear seat (2) and the welding gun (9) are fixed on the cross beam (1), the cross beam force arm (4) is connected with the roller force arm (6) through a pin shaft, the force arm ear seat (5) is fixed on the roller force arm (6), the cross beam ear seat (2) is connected with the force arm ear seat (5) through the adjusting screw rod (3), and a welding wire (10) and the welding gun (9) are relatively fixed on the cross beam (1); the rolling depression quantity delta X of the roller (7) to the surfacing layer (8) is adjusted by adjusting the length of the adjusting screw (3), the position of the cross beam force arm (4) and/or the welding gun (9) on the cross beam (1) is adjustable, and the rolling lag distance delta Y is adjusted by adjusting the distance between the welding gun (9) and the roller (7); and (3) completing the welding process by a welding gun (9) with a tungsten electrode and a welding wire (10) to form a surfacing layer (8), rolling the surfacing layer (8) by a roller (7), and after rolling is finished, completing the crystal grain crushing and recrystallization of the surfacing layer (8), wherein each layer is repeated.

2. The argon arc welding surfacing and post-welding rolling integrated additive manufacturing device according to claim 1, which is characterized in that: a rolling procedure is added after argon arc welding overlaying; a welding gun (9) and a welding wire (10) form a surfacing layer, and then the surfacing layer is rolled by a roller (7) by a certain deformation amount; the structure state after the build-up welding layer is formed is an as-cast structure and is in a columnar dendritic structure, and after the build-up welding layer is deformed by a roller (7), coarse grains of the build-up welding layer are fully crushed to provide power for subsequent recrystallization, so that the structure grains are refined and converted into fine and uniform isometric crystals; adjusting the rolling deformation rate of the overlaying layer by adjusting the pressing quantity delta X, wherein the pressing quantity delta X is determined by the following formula:

in the formula:

: the depth of the roller pressed down relative to the plane of the surfacing layer is mm;

t: the thickness of the surfacing layer is mm;

a: the required deformation rate of the overlay layer is 15-30%.

3. The argon arc welding surfacing and post-welding rolling integrated additive manufacturing device according to claim 1, which is characterized in that: the rolling lag distance delta Y between the welding gun (9) and the roller (7) is set for ensuring that the rolled overlaying layer is in the recrystallization temperature range and is calculated by the following formula:

in the formula:

t1: the temperature during argon arc welding surfacing;

t2: the temperature after rolling;

t: cooling rate of the metal in air/s;

: the welding speed is mm/s.

4. The argon arc welding surfacing and post-welding rolling integrated additive manufacturing device according to claim 1, wherein the size of the roller pressing force is adjusted by selecting a proper roller diameter; the material of the overlay welding layer is constant, and the deformation rate is constant (Certain), the larger the roller diameter, the larger the pressing force; too large diameter of the roller requires too much pressing force, so that the design of the equipment is unreasonable; according to the performance of common metal materials, in order to control the roller pressing force, the diameter of the roller is generally 8-15 mm.

Background

The arc wire feeding additive manufacturing technology (WAAM) is widely applied as one of 3D printing methods at present, and the basic principle is that a welding arc is used as a heat source to melt metal wires, each layer of the wires is stacked on a substrate according to a set forming path, and the wires are stacked layer by layer until a formed metal part is formed. The electric arc additive manufacturing technology is to manufacture a compact metal solid component by adopting a layer-by-layer overlaying mode, and is suitable for low-cost, high-efficiency and quick forming of large-size complex components because the electric arc is used as an energy-carrying beam, the heat input is high, the forming speed is high, and the electric arc additive manufacturing technology is suitable for quick forming of large-size complex components with low cost. In the face of the requirements of manufacturing cost and reliability of special metal structures, structural parts of the metal structures are gradually developed to be large-sized, integrated and intelligent, so that the technology has the advantages of efficiency and cost which are incomparable with other additive technology in the aspect of forming large-sized structural parts. Compared with the traditional manufacturing technology, the microstructure of the arc additive is a dendritic structure, so that the mechanical property of the arc additive is lower than that of a conventional forged piece, a steel pipe and a steel plate due to segregation, anisotropy, coarse grains and the like, meanwhile, the use of the product is influenced and limited due to the occurrence of overlaying defects such as cracks and pores in the arc additive process, and meanwhile, the manufacturing efficiency is low due to reworking of the overlaying defects.

In order to solve the problems, an argon arc welding surfacing and post-welding rolling integrated additive manufacturing device is urgently needed to be designed. The device send a vibration material disk manufacturing technology based on electric arc, designs to add and should be at 900~1000 ℃ along with welding the roll-pressing process (vibration material disk metal temperature should be when the roll-pressing), makes vibration material disk metal take place great deformation through the roll-pressing, then warp the metal under high temperature and take place the recrystallization, makes the thick dendrite of crystalline grain become the fine and small equiaxial crystal of crystalline grain, has improved the microstructure completely, guarantees that the performance of formed piece satisfies the design requirement.

Disclosure of Invention

The purpose of the invention is:

aiming at the problems of low forming efficiency, poor forming structure performance and the like of the existing electric arc additive manufacturing technology, the additive manufacturing device integrating argon arc welding surfacing and rolling after welding is designed.

The technical scheme of the invention is as follows:

the utility model provides an argon arc welds build-up welding and rolls extrusion integrated vibration material disk device after welding which characterized by: the welding wire welding device comprises a cross beam 1, a cross beam ear seat 2, an adjusting screw rod 3, a cross beam force arm 4, a force arm ear seat 5, a roller force arm 6, a roller 7 and a welding gun 9, wherein the cross beam 1 is arranged on welding equipment and can move up and down and left and right under the control of the welding equipment, the cross beam force arm 4, the cross beam ear seat 2 and the welding gun 9 are fixed on the cross beam 1, the cross beam force arm 4 is connected with the roller force arm 6 through a pin shaft, the force arm ear seat 5 is fixed on the roller force arm 6, the cross beam ear seat 2 is connected with the force arm ear seat 5 through the adjusting screw rod 3, and a welding wire 10 and the welding gun 9 are relatively fixed on the cross beam 1; the rolling depression quantity delta X of the roller 7 on the surfacing layer 8 is adjusted by adjusting the length of the adjusting screw 3, the position of the cross beam force arm 4 and/or the welding gun 9 on the cross beam 1 is adjustable, and the rolling lag distance delta Y is adjusted by adjusting the distance between the welding gun 9 and the roller 7; and completing the welding process by a welding gun 9 with a tungsten electrode and a welding wire 10 to form a surfacing layer 8, rolling the surfacing layer 8 by a roller 7 after forming, and completing the grain crushing and recrystallization of the surfacing layer 8 after finishing the rolling, wherein each layer is repeated.

A rolling procedure is added after argon arc welding overlaying; a welding gun 9 and a welding wire 10 form a surfacing layer, and then the surfacing layer is rolled by a roller 7 by a certain deformation amount; the structure state after the build-up welding layer is an as-cast structure and is in a columnar dendritic structure, and after the build-up welding layer is deformed by the roller 7, coarse grains of the build-up welding layer are fully crushed to provide power for subsequent recrystallization, so that the structure grains are refined and converted into fine and uniform isometric crystals; adjusting the rolling deformation rate of the overlaying layer by adjusting the pressing quantity delta X, wherein the pressing quantity delta X is determined by the following formula:

in the formula:

: the depth of the roller pressed down relative to the plane of the surfacing layer is mm;

t: the thickness of the surfacing layer is mm;

a: the required deformation rate of the overlay layer is 15-30%.

The rolling delay distance Δ Y between the welding torch 9 and the roller 7 is set to ensure that the rolled weld overlay is within the recrystallization temperature range and is calculated by the following formula:

in the formula:

t1: the temperature during argon arc welding surfacing;

t2: the temperature after rolling;

t: cooling rate of the metal in air/s;

: the welding speed is mm/s.

Selecting a proper roller diameter to adjust the magnitude of the roller pressing force; the material of the overlay welding layer is constant, and the deformation rate is constant (Certain), the larger the roller diameter, the larger the pressing force; too large diameter of the roller requires too much pressing force, so that the design of the equipment is unreasonable; according to the performance of common metal materials, in order to control the roller pressing force, the diameter of the roller is generally 8-15 mm.

The invention has the beneficial effects that:

based on the electric arc wire feeding additive manufacturing technology, the invention crushes the coarse grains of the overlaying layer by adding the post-welding rolling technology, improves the microstructure by recrystallization of the material and ensures that the performance of a formed part meets the design requirement.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Detailed Description

The invention is further described below with reference to the figures and examples.

As shown in fig. 1.

An argon arc welding surfacing and postweld rolling integrated additive manufacturing device comprises a cross beam 1, a cross beam ear seat 2, an adjusting screw rod 3, a cross beam force arm 4, a force arm ear seat 5, a roller force arm 6, a roller 7 and a welding gun 9, wherein the cross beam 1 is arranged on welding equipment and can move up and down and left and right under the control of the welding equipment, the cross beam force arm 4, the cross beam ear seat 2 and the welding gun 9 are fixed on the cross beam 1, the cross beam force arm 4 is connected with the roller force arm 6 through a pin shaft, the force arm ear seat 5 is fixed on the roller force arm 6, the cross beam ear seat 2 is connected with the force arm ear seat 5 through the adjusting screw rod 3, and a welding wire 10 and the welding gun 9 are relatively fixed on the cross beam 1; the rolling depression quantity delta X of the roller 7 on the surfacing layer 8 is adjusted by adjusting the length of the adjusting screw 3, the position of the cross beam force arm 4 and/or the welding gun 9 on the cross beam 1 is adjustable, and the rolling lag distance delta Y is adjusted by adjusting the distance between the welding gun 9 and the roller 7; and completing the welding process by a welding gun 9 with a tungsten electrode and a welding wire 10 to form a surfacing layer 8, rolling the surfacing layer 8 by a roller 7 after forming, and completing the grain crushing and recrystallization of the surfacing layer 8 after finishing the rolling, wherein each layer is repeated. A rolling procedure is added after argon arc welding overlaying; a welding gun 9 and a welding wire 10 form a surfacing layer, and then the surfacing layer is rolled by a roller 7 by a certain deformation amount; the structure state after the build-up welding layer is an as-cast structure and is in a columnar dendritic structure, and after the build-up welding layer is deformed by the roller 7, coarse grains of the build-up welding layer are fully crushed to provide power for subsequent recrystallization, so that the structure grains are refined and converted into fine and uniform isometric crystals; adjusting the rolling deformation rate of the overlaying layer by adjusting the pressing quantity delta X, wherein the pressing quantity delta X is determined by the following formula:

in the formula:

: the depth of the roller pressed down relative to the plane of the surfacing layer is mm;

t: the thickness of the surfacing layer is mm;

a: the required deformation rate of the overlay layer is 15-30%.

The rolling delay distance Δ Y between the welding torch 9 and the roller 7 is set to ensure that the rolled weld overlay is within the recrystallization temperature range and is calculated by the following formula:

in the formula:

t1: the temperature during argon arc welding surfacing;

t2: the temperature after rolling;

t: cooling rate of the metal in air/s;

: the welding speed is mm/s.

In addition, as shown in fig. 1, in the specific implementation, the size of Δ Y can be adjusted by selecting the diameter of the roller and the height of the adjusting screw 3. Selecting a proper roller diameter to adjust the magnitude of the roller pressing force; the material of the overlay welding layer is constant, and the deformation rate is constant (Certain), the larger the roller diameter, the larger the pressing force; too large diameter of the roller requires too much pressing force, so that the design of the equipment is unreasonable; according to the performance of common metal materials, in order to control the roller pressing force, the diameter of the roller is generally 8-15 mm.

Example (c):

the method is characterized in that an ER NiMo-2 argon arc welding wire is adopted for surfacing, the temperature (T1) during surfacing is about 1400 ℃, the temperature (T2) required for recrystallization is 950 ℃, the cooling rate of the metal in air is 100 ℃/s, and the welding speed of a welding machine is controlled to be 4 mm/s. The design deformation rate (A) is 20% (can be selected between 15 and 30%), the diameter of the roller is 10mm (can also be selected between 8 and 15mm by random calculation), the thickness (T) of one overlaying layer is 2mm, and the method can be calculated according to the formula in the claims: DeltaX is 0.4mm and DeltaY is 18 mm.

And adjusting the distance between surfacing and stirring according to the calculated delta X. A 2.4mm wire is selected and placed on the wire feeder with the wire in place. Setting the welding current of a welding machine to be 90-170A, the welding voltage to be 10-14V, the welding speed to be 4mm/s and the welding parameters to be in place.

And starting a welding machine, melting welding wires to form a surfacing layer, wherein the temperature of the surfacing layer is about 1400 ℃, the formed surfacing layer moves to the roller for rolling, the lowest temperature is 950 ℃ after the rolling is finished, the rolled surfacing layer is recrystallized at the temperature to form isometric crystals, and after the rolling is finished, the next surfacing layer is formed according to the same steps. Comparing the performance of the surfacing layer after surfacing and the performance of the surfacing layer after rolling:

state of bead weld	Tensile strength at room temperature/MPa	Room temperature yield strength/MPa
			After build-up welding	742	321
After surfacing and rolling	842	434

The parts not involved in the present invention are the same as or can be implemented using the prior art.