CN218491844U

CN218491844U - Air-borne double-air-path annular powder feeding nozzle for laser cladding

Info

Publication number: CN218491844U
Application number: CN202221958187.2U
Authority: CN
Inventors: 黄旭东; 廖运生
Original assignee: Jiangsu Dianjin Laser Technology Co ltd
Current assignee: Jiangsu Dianjin Laser Technology Co ltd
Priority date: 2022-07-28
Filing date: 2022-07-28
Publication date: 2023-02-17
Anticipated expiration: 2032-07-28

Abstract

The utility model discloses an airborne double-gas-path annular powder feeding nozzle for laser cladding, which comprises a fixing ring, wherein a first gas path is arranged in the middle of the upper end of the fixing ring, a second gas path is arranged on one side of the first gas path, a sinking groove is arranged at the lower end of the fixing ring, a shunt ring is arranged in the sinking groove and is in threaded connection with the sinking groove, a feeding head is arranged at the upper end of the shunt ring and is matched with the first gas path, a feeding channel is arranged at the corresponding position of the first gas path by the shunt ring, a groove is arranged on the upper surface of the shunt ring, a plurality of protection gas paths are arranged around the feeding head in the groove, and the second gas path is positioned right above the groove; the utility model discloses can form an annular gas around cladding material, can improve cladding material effective distance that sprays tied in a bundle to improve and send the distance of powder mouth apart from the welding substrate, reduced the heat radiation that receives, avoided sending the powder mouth to be heated by stifled.

Description

Air-borne double-air-path annular powder feeding nozzle for laser cladding

Technical Field

The utility model belongs to the technical field of laser cladding welding, especially, relate to a two gas circuit annular of airborne formula send whitewashed mouth for laser cladding.

Background

Laser cladding welding is a new surface modification technology. The method is characterized in that a cladding material is added on the surface of a base material, and the cladding material and a thin layer on the surface of the base material are fused together by utilizing a laser beam with high energy density, so that a cladding layer which is metallurgically bonded with the base layer is formed on the surface of the base layer.

The powder feeding nozzle in laser cladding is a device for spraying cladding materials onto the surface of a substrate, the air-borne powder feeding nozzle drives the cladding materials through gas, the gas and the cladding materials are sprayed onto the surface of the substrate together, so that the cladding materials are uniformly distributed on the surface of the substrate, the traditional air-borne powder feeding nozzle can generate bundling of the cladding materials after the cladding materials are driven by the gas to be sprayed out of the powder feeding nozzle, but for welding uniformity, the actual effective bundling length of the cladding materials is 10mm, the cladding materials exceeding 10mm can be excessively diffused, the welding effect is influenced, the powder feeding nozzle is close to the welding surface, the degree of thermal radiation of the powder feeding nozzle is large, the cladding materials are easily melted at the powder feeding nozzle opening, and the powder feeding nozzle is blocked.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving traditional airborne powder feeding nozzle, send the powder distance to be 10mm, make to send to divide the mouth to be closer apart from the welding substrate, send the powder mouth to receive thermal radiation just big more, melt cladding material at sending powder mouth easily, make send powder mouth jam scheduling problem and provide an airborne double-gas-circuit annular powder feeding nozzle for laser cladding.

The utility model discloses a following technical scheme realizes above-mentioned purpose: including solid fixed ring, gu seted up first gas circuit in the middle of the fixed ring upper end, the second gas circuit has been seted up to first gas circuit one side, gu the fixed ring lower extreme has seted up heavy groove, heavy inslot portion is equipped with the branch ring, the branch ring with heavy groove passes through threaded connection, the branch ring upper end is equipped with the feed head, the feed head with first gas circuit agrees with mutually, the branch ring is in feed channel has been seted up to first gas circuit corresponding position, the branch ring upper surface is seted up flutedly, the recess is inside and is located a plurality of protection gas circuits have been seted up all around to the feed head, the second gas circuit is located directly over the recess, the feed channel lower extreme is equipped with and send the powder pipeline, send the powder pipeline with feed channel passes through threaded connection, send the powder pipeline periphery to be equipped with protective sleeve, protective sleeve with the branch ring lower extreme passes through threaded connection, protective sleeve is in send the powder pipeline corresponding position to offer the venthole.

Furthermore, the upper ends of the first air path and the second air path are both connected with copper pipes.

Furthermore, the upper end of the feeding head is chamfered, and the first gas path is at a chamfer angle at a position corresponding to the feeding head.

Furthermore, the outer diameter surface of the middle of the powder feeding pipeline is hexagonal.

Further, the inner diameter of the air outlet is larger than the outer diameter of the lower end of the powder feeding pipeline.

Has the advantages that: the utility model relates to a rationally, simple structure is stable, and the practicality is strong, has following

Has the advantages that:

1. the gas drives the cladding material to come down from the first gas path and enter the powder feeding pipeline through the feeding channel, and the powder feeding pipeline is aligned with the substrate, so that the cladding material can be sprayed to the outer surface of the substrate;

2. the second gas path is ventilated, and the cladding material bundle uniformly enters between the protective sleeve and the powder feeding pipeline through the protective gas path on the groove and is discharged from the gas outlet hole, so that an annular air bundle can be formed at the periphery of the cladding material bundle sprayed by the powder feeding pipeline, a guiding and accelerating effect can be realized on the cladding material, the effective length of the cladding material bundle can be increased to 20mm, the distance between the powder feeding nozzle and the surface of the substrate is increased, the heat radiation is reduced, and the situation that the powder feeding nozzle is blocked is avoided;

3. the protective sleeve can also protect the powder feeding pipeline, prevent laser splash and heat radiation from directly contacting the powder feeding nozzle, and prolong the service life of the powder feeding nozzle.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the full-section structure of the present invention;

fig. 3 is a schematic view of the explosion full-section structure of the utility model.

In the figure: 1-a fixing ring, 2-a first gas path, 3-a second gas path, 4-a sink groove, 5-a shunt ring, 6-a feeding head, 7-a feeding channel, 8-a groove, 9-a protection gas path, 10-a powder feeding pipeline, 11-a protection sleeve and 12-an air outlet.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

With reference to fig. 1 to 3, an air-borne double-gas-path annular powder feeding nozzle for laser cladding is shown, and includes a fixing ring 1, a first gas path 2 is formed in the middle of the upper end of the fixing ring 1, a second gas path 3 is formed on one side of the first gas path 2, a sinking groove 4 is formed in the lower end of the fixing ring 1, a shunt ring 5 is arranged inside the sinking groove 4, the shunt ring 5 is in threaded connection with the sinking groove 4, a feeding head 6 is arranged at the upper end of the shunt ring 5, the feeding head 6 is matched with the first gas path 2, a feeding channel 7 is formed in the position, corresponding to the first gas path 2, of the shunt ring 5, a groove 8 is formed in the upper surface of the shunt ring 5, a plurality of protective gas paths 9 are formed inside the groove 8 and located around the feeding head 6, the second gas path 3 is located right above the groove 8, a powder feeding pipeline 10 is arranged at the lower end of the feeding channel 7, the powder feeding pipeline 10 is in threaded connection with the feeding channel 7, a protective sleeve 11 is arranged at the periphery of the powder feeding pipeline 10, the protective sleeve 11 is in threaded connection with the lower end of the protective sleeve 5, and a protective sleeve 12 is formed in the position corresponding to the powder feeding pipeline 10.

Wherein, first gas circuit 2 all is connected the copper pipe with 3 upper ends of second gas circuit, can improve the heat resistance, prevent that the trachea from damaging, the chamfer is put on 6 upper ends of feed head, first gas circuit 2 corresponds the position chamfer at feed head 6, can make feed head 6 sealed with first gas circuit 2, prevent two gas circuits from mixing, send powder pipeline 10 middle outside diameter face to be the hexagon, be convenient for installation and dismantlement send powder pipeline 10, the 12 internal diameter size of venthole is greater than and send powder pipeline 10 lower extreme external diameter size, the assurance can form annular gas around sending powder pipeline.

The working principle is as follows: the utility model discloses gaseous drive cladding material gets off from first gas circuit, get into through feedstock channel and send the powder pipeline, send the powder pipeline to aim at the substrate, can make cladding material spray the substrate surface like this, the second gas circuit is ventilated, protection gas circuit on the recess, even entering into protective sleeve and send between the powder pipeline, discharge from the venthole again, can form an annular air cluster in the periphery that send powder pipeline spun cladding material to gather a bundle like this, can play a direction acceleration's effect to cladding material like this, can improve cladding material effective length to 20mm tied in a bundle, thereby improve the distance of sending powder nozzle apart from the substrate surface, reduce the thermal radiation, avoided sending the condition that powder nozzle is blockked up, protective sleeve can also play the protection to sending the powder pipeline and do, prevent that laser from splashing and thermal radiation direct contact send powder nozzle, improve and send powder nozzle life.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a two gas circuit annular of airborne formula send whitewashed mouth for laser cladding which characterized in that: comprises a fixed ring (1), a first air passage (2) is arranged in the middle of the upper end of the fixed ring (1), a second gas circuit (3) is arranged on one side of the first gas circuit (2), a sink groove (4) is arranged at the lower end of the fixing ring (1), a shunt ring (5) is arranged in the sinking groove (4), the shunt ring (5) is connected with the sinking groove (4) through threads, the upper end of the branch ring (5) is provided with a feed head (6), the feed head (6) is fit with the first air passage (2), the branch ring (5) is provided with a feeding channel (7) at the corresponding position of the first air path (2), the upper surface of the branch ring (5) is provided with a groove (8), a plurality of protective gas circuits (9) are arranged inside the groove (8) and positioned around the feed head (6), the second air passage (3) is positioned right above the groove (8), the lower end of the feed channel (7) is provided with a powder feeding pipeline (10), the powder feeding pipeline (10) is connected with the feeding channel (7) through threads, a protective sleeve (11) is arranged on the periphery of the powder feeding pipeline (10), the protective sleeve (11) is connected with the lower end of the shunt ring (5) through threads, and the protective sleeve (11) is provided with an air outlet (12) at the position corresponding to the powder feeding pipeline (10).

2. The air-borne double-air-path annular powder feeding nozzle for laser cladding as claimed in claim 1, wherein: the upper ends of the first air path (2) and the second air path (3) are connected with copper pipes.

3. The air-borne double-air-path annular powder feeding nozzle for laser cladding as claimed in claim 1, wherein: the upper end of the feeding head (6) is chamfered, and the first air passage (2) is at the position corresponding to the feeding head (6).

4. The air-borne double-air-path annular powder feeding nozzle for laser cladding as claimed in claim 1, wherein: the outer diameter surface of the middle of the powder feeding pipeline (10) is hexagonal.

5. The air-borne double-air-path annular powder feeding nozzle for laser cladding as claimed in claim 1, wherein: the inner diameter of the air outlet (12) is larger than the outer diameter of the lower end of the powder feeding pipeline (10).