RU135564U1 - DEVICE FOR PRODUCTION OF PARTS FROM BIMETALLIC COMPOSITE BY SELECTIVE LASER ALLOYS - Google Patents

Abstract

A device for manufacturing a part from a bimetallic composite by selective laser fusion, containing a laser source with a beam scanning system, a table, a hopper-feeder of metal powder material with a piston placed on it, arranged to move the layer of powder and the resulting material in the vertical direction, a hopper for collecting surplus powder, a working hopper with a piston on which the substrate is fixed, and means for feeding the powder and removing its excess, characterized in that it is provided but a second hopper-feeder of metal powder with a piston and a second hopper for collecting excess powder, placed on the table opposite to the first hopper-feeder and hopper for collecting excess powder, while the means for feeding the powder and removing its excess consists of four guides that are installed on the table on the sides of the working hopper, and placed on the rails with the possibility of moving the drive beams with knives, one beam with a knife - on a pair of oppositely located guides and a second beam with but the pulp is on another pair of oppositely arranged guides, one of the knives being made with a slot to allow another knife to pass through it, and the beam on which it is mounted is mounted on the guide in a plane located above the plane of the beam of the other knife.

Description

The utility model relates to the field of laser processing of materials and can be used to obtain bulk parts from bimetallic composite powder by selective laser fusion.

A device for producing materials by laser sintering is known, which comprises a working chamber, a laser optically coupled to a scanning and beam focusing system, a working hopper with a piston configured to move the powder layer and the resulting material in the vertical direction, a hopper-feeder, means for supplying powder and removal and sealing roller (RU 2423203 C2, B23K 26/00, 07/10/2011).

However, through this device receive parts of constant composition in thickness, in addition, the method of sintering of the powder requires the implementation of its compaction, which requires additional tools and technological operations.

The task of creating a utility model is to obtain parts from a bimetallic composite by selective laser fusion with different composition of the material from layer to layer with high strength characteristics.

For this, a device for manufacturing a part from a bimetallic composite by selective laser fusion contains a laser source with a beam scanning system, a table, a hopper-feeder of metal powder material with a piston placed on it, arranged to move the layer of powder and the resulting material in the vertical direction, a collection hopper excess powder, a working hopper with a piston on which the substrate is fixed, and means for feeding the powder and removing its excess, the second hopper-feeder m metal powder with the piston and a second hopper collecting surplus powder placed on the table, respectively, opposite the first feed hopper and the powder collection hopper surplus. The means for feeding the powder and removing its excess consists of four guides that are installed on the table on the sides of the working hopper, and placed on them with the ability to move the drive beams with knives, one beam with a knife - on a pair of oppositely spaced guides and the second beam with a knife - on another pair of opposing rails. One of the knives is made with a slot to allow another knife to pass through it, and the beam on which it is mounted is mounted on a guide in the plane located above the plane of the beam of the other knife.

Figure 1 presents the structural diagram of the device of figure 2 is a top view of figure 1.

The device contains:

1 - table

2a - hopper feeder for powder A

2b - hopper feeder for powder B

3 - working hopper

4a - hopper for excess powder A

4b - hopper for excess powder B

5a - the piston of the hopper 2A

5b - bunker piston 2b

6 - substrate

7a - beam with a knife

7b - beam with a knife

8a - guides for the knife beam 7a

8b - guides for the knife beam 7b

9 - laser scanning system

10 - source of laser radiation

11 - growing part

12 - piston for moving the substrate.

On table 1 there are hopper feeders 2a and 2b for powder A and B with pistons for moving the powder layer and the resulting material in the vertical direction, hoppers 4a and 4b for collecting excess powder, a working hopper 3 with a piston 12, on which the substrate 6 is fixed, and means for feeding the powder and removing its excess. The feed hoppers 2a and 2b are placed opposite each other on the sides of the working hopper 3, and the hoppers 4a and 4b for collecting excess powder are also placed opposite to each other on the other sides of the working hopper 3. The means for feeding the powder and removing its excess consists of four guides 8a and 8b, which are mounted on the table 1 on the sides of the working hopper 3. On the rails are placed with the possibility of movement of the drive beams with knives 7a and 7b. A beam with a knife 7a on a pair of oppositely spaced guides 8a and a second beam with a knife 7b on a different pair of oppositely spaced guides 8b. The knife 7b is made with a slot to allow the knife 7a to pass through it and the beam on which it is mounted is mounted on the guide 8b in the plane of the knife beam 7a located above the plane of location.

The device operates as follows.

The hopper 2a is filled with powder material A, and the hopper 2b is filled with material B. The piston 5a rises to the required distance up in the direction of the Z axis, feeding the powder material A. The piston 6 is lowered in the direction of the axis оси by a predetermined amount necessary to obtain one layer. The beam with the knife 7a, moving along the guide 8a in the direction of the X axis, transfers the powder A to the hopper 3, applying and smoothing the powder on the substrate 6. The knife 7a transfers the rest of the powder to the hopper 4a and returns to its original position. The laser beam moved by the scanning system 9 melts the powder in a given area, forming a continuous layer of material. The operation is repeated until the finished part 10 is obtained the required number of times, alternating powders A and B in the required sequence. The second powder material B is applied to the substrate 6, respectively, using a hopper-feeder 2b, a beam with a knife 7b, moved along the guide 86. Thanks to the slot in the knife 7b and the fact that the beam on which it is mounted is mounted on the guide 8b in the plane located above the plane of the location of the knife beam 7a, it is possible to freely move both the knife 7a and the knife 7b in the process their work.

The device makes it possible to use 2 different powder compositions from individual bins, which allows combining the composition from layer to layer, obtaining the necessary gradient structure with desired properties and, due to powder melting by a laser source, to obtain a product with high strength characteristics.

Claims (1)

A device for manufacturing a part from a bimetallic composite by selective laser fusion, containing a laser source with a beam scanning system, a table, a hopper-feeder of metal powder material with a piston placed on it, arranged to move the layer of powder and the resulting material in the vertical direction, a hopper for collecting surplus powder, a working hopper with a piston on which the substrate is fixed, and means for feeding the powder and removing its excess, characterized in that it is provided but a second hopper-feeder of metal powder with a piston and a second hopper for collecting excess powder, placed on the table opposite to the first hopper-feeder and hopper for collecting excess powder, while the means for feeding the powder and removing its excess consists of four guides that are installed on the table on the sides of the working hopper, and placed on the rails with the possibility of moving the drive beams with knives, one beam with a knife - on a pair of oppositely located guides and a second beam with but the pulp is on another pair of oppositely arranged guides, one of the knives being made with a slot to allow another knife to pass through it, and the beam on which it is mounted is mounted on the guide in a plane located above the plane of the beam of the other knife.

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