CN210387592U

CN210387592U - Nozzle for producing high-nickel alloy through gas atomization

Info

Publication number: CN210387592U
Application number: CN201920814198.5U
Authority: CN
Inventors: 吴楚; 何浩; 陈永志; 吴玉书
Original assignee: HUNAN HENGJI POWDER TECHNOLOGY CO LTD
Current assignee: HUNAN HENGJI POWDER TECHNOLOGY CO LTD
Priority date: 2019-05-31
Filing date: 2019-05-31
Publication date: 2020-04-24
Anticipated expiration: 2029-05-31

Abstract

The utility model discloses a nozzle for gas atomization production high nickel alloy, the nozzle includes B₄C a ceramic body, B₄And a spraying cavity is formed in the C ceramic body, a reserved filling groove is formed at the outlet of the spraying cavity, and a Zr-Ti-C-B ceramic filling layer is sprayed in the reserved filling groove. The utility model discloses in the exit wearing and tearing that exist to high nickel alloy product gas atomization process spray chamber serious, the utility model discloses in the exit in spray chamber seted up reservation filling groove to the spraying has Zr-Ti-C-B pottery filling layer in reservation filling groove, the life of promotion nozzle that can show, under the same operating mode condition, the life of nozzle can be promoted to 45min by 20 min.

Description

Nozzle for producing high-nickel alloy through gas atomization

Technical Field

The utility model belongs to the gas atomization equipment field especially relates to a gas atomization nozzle.

Background

The nozzle is a key part in various spraying, atomizing, oil spraying, sand blasting, spraying and other equipment and plays an important role. The nozzle is commonly used in various industries such as automobile, electroplating, surface treatment, high-pressure cleaning, dust removal, cooling, desulfurization, humidification, stirring, garden and the like. The powder atomizing nozzle is a non-combustion type nozzle, but needs a certain corrosion resistance and heat corrosion resistance due to the possibility of contacting molten metal.

B₄C ceramic nozzle having high hardness and wear resistance, B₄C ceramic nozzles are best for wear resistance in current commercial nozzle materials. B is₄The nozzle C is divided into an upper end feeding hole and a lower end spraying hole. In general, molten metal flows into the feed opening and is discharged from the spout opening. The sprayed molten metal is broken and solidified into powder particles under the impact of high-pressure atomized airflow. But B₄When the C ceramic nozzle is used for atomizing and spraying products (such as high nickel alloy products such as 713/718) at the temperature of more than 1700 ℃, the nozzle is seriously eroded and abraded, and the service life is sharply reduced. After 20min at 1700 ℃, the pore size expanded from 4.2mm to 6mm, resulting in a coarser metal stream and a lower fine yield.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that overcome not enough and the defect mentioned in the above background art, provide a simple structure, long service life's a nozzle that is used for high nickel alloy of gas atomization production. In order to solve the technical problem, the utility model provides a technical scheme does:

a nozzle for the gas atomization production of high-nickel alloy, said nozzle comprising B₄C a ceramic body, B₄And a spraying cavity is formed in the C ceramic body, a reserved filling groove is formed at the outlet of the spraying cavity, and a Zr-Ti-C-B ceramic filling layer is sprayed in the reserved filling groove (until the Zr-Ti-C-B ceramic filling layer is filled up). The Zr-Ti-C-B ceramic filling layer is made of ceramic alloy consisting of Zr, Ti, C and B, has high melting point, high chemical stability and high wear resistance, can work at 3000 ℃, and can be used for treating B₄C ceramic body provides effective protection, and B is increased₄And C, the service life of the ceramic nozzle.

In the nozzle for producing high-nickel alloy by gas atomization, preferably, the groove depth k of the reserved filling groove is 1.2-2.0mm, and the groove height h of the reserved filling groove is 4-7 mm.

In the nozzle for producing the high-nickel alloy through gas atomization, preferably, the surface of the reserved filling groove is provided with an auxiliary transition layer for improving the bonding force between the reserved filling groove and the Zr-Ti-C-B ceramic filling layer. For example, the auxiliary transition layer is a high-roughness layer, so that the bonding tightness between the Zr-Ti-C-B ceramic filling layer and the reserved filling groove can be ensured, and the auxiliary transition layer can be obtained by means of sand blasting and the like.

In the nozzle for producing a high-nickel alloy by gas atomization, preferably, the inner surface L1 of the Zr-Ti-C-B ceramic filling layer is flush with the inner wall of the spray cavity, and the bottom surface L2 of the Zr-Ti-C-B ceramic filling layer is flush with the end part of the outlet of the spray cavity.

In the nozzle for producing a high nickel alloy by gas atomization, preferably, the inner wall of the spray chamber is arranged obliquely, the inner surface L1 of the Zr-Ti-C-B ceramic filling layer is arranged obliquely, and the inclination of the inner wall of the spray chamber is the same as that of the outer surface of the Zr-Ti-C-B ceramic filling layer.

Compared with the prior art, the utility model has the advantages of:

1. the exit to the injection chamber that high nickel alloy product gas atomization process exists is worn and torn seriously, the utility model discloses in seted up in the exit in injection chamber and reserved the filling groove to the spraying has Zr-Ti-C-B ceramic filling layer in reserving the filling groove, the life of promotion nozzle that can show, under the same operating mode condition, the life of nozzle can promote to 45min (the aperture is expanded to 6 mm's time by 4.2 mm) by 20 min.

2. The utility model discloses simple structure, the feasibility is strong, has higher practical value.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a nozzle for producing high-nickel alloy by gas atomization according to the present invention (the Zr-Ti-C-B ceramic filling layer is not shown in the figure).

Fig. 2 is a schematic structural diagram of a nozzle for producing high-nickel alloy by gas atomization according to the present invention.

Illustration of the drawings:

1、B₄c, a ceramic body; 2. an ejection chamber; 3. reserving a filling groove; 4. a Zr-Ti-C-B ceramic filler layer; 5. and (4) an auxiliary transition layer.

Detailed Description

To facilitate understanding of the present invention, the present invention will be described more fully and specifically with reference to the accompanying drawings and preferred embodiments, but the scope of the present invention is not limited to the specific embodiments described below.

Unless otherwise defined, all terms of art used hereinafter have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the present invention.

Unless otherwise specifically stated, various raw materials, reagents, instruments, equipment and the like used in the present invention are commercially available or can be prepared by an existing method.

Example 1:

as shown in FIGS. 1 and 2, the nozzle for producing a high nickel alloy by gas atomization of the present embodiment includes B₄C ceramic body 1, B₄A spraying cavity 2 is formed in the C ceramic body 1, a reserved filling groove 3 is formed in the outlet of the spraying cavity 2, and a Zr-Ti-C-B ceramic filling layer 4 is sprayed in the reserved filling groove 3.

In this embodiment, the Zr-Ti-C-B ceramic filling layer 4 is a ceramic alloy made of Zr, Ti, C, and B, has a high melting point, a high chemical stability, and a high wear resistance, and can operate at 3000 ℃.

In this embodiment, the groove depth k of the reserved filling groove 3 is 1.2-2.0mm (any of the above ranges, preferably 1.5mm), and the groove height h of the reserved filling groove 3 is 4-7mm (any of the above ranges, preferably 5 mm).

In this embodiment, the surface of the reserved filling groove 3 is provided with an auxiliary transition layer 5 for improving the bonding force between the reserved filling groove 3 and the Zr-Ti-C-B ceramic filling layer 4.

In this embodiment, the inner surface L1 of the Zr-Ti-C-B ceramic packed layer 4 is flush with the inner wall of the firing chamber 2, and the bottom surface L2 of the Zr-Ti-C-B ceramic packed layer 4 is flush with the end of the outlet of the firing chamber 2.

In this embodiment, the inner wall of the spray chamber 2 is disposed obliquely, the inner surface L1 of the Zr-Ti-C-B ceramic packed layer 4 is disposed obliquely, and the inclination of the inner wall of the spray chamber 2 is the same as the inclination of the outer surface of the Zr-Ti-C-B ceramic packed layer 4.

In the embodiment, the Zr-Ti-C-B ceramic filling layer 4 is sprayed in the reserved filling groove 3, so that the service life of the nozzle can be remarkably prolonged, and under the same working condition, the service life of the nozzle can be prolonged from 25min to 45min (the time for expanding the aperture from 4.2mm to 6 mm).

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A nozzle for the production of high nickel alloys by gas atomization, characterized in that it comprises B₄C a ceramic body (1), B₄A spraying cavity (2) is formed in the C ceramic body (1), a reserved filling groove (3) is formed in an outlet of the spraying cavity (2), and a Zr-Ti-C-B ceramic filling layer (4) is sprayed in the reserved filling groove (3).

2. The nozzle for the gas atomization production of the high-nickel alloy according to claim 1, characterized in that the groove depth k of the reserve filling groove (3) is 1.2-2.0mm, and the groove height h of the reserve filling groove (3) is 4-7 mm.

3. The nozzle for the gas atomization production of the high-nickel alloy according to the claim 1, characterized in that the surface of the pre-filling groove (3) is provided with an auxiliary transition layer (5) for improving the bonding force between the pre-filling groove (3) and the Zr-Ti-C-B ceramic filling layer (4).

4. The nozzle for the gas atomization production of the high-nickel alloy according to any one of claims 1 to 3, characterized in that the inner surface L1 of the Zr-Ti-C-B ceramic filler layer (4) is flush with the inner wall of the spray chamber (2), and the bottom surface L2 of the Zr-Ti-C-B ceramic filler layer (4) is flush with the end of the outlet of the spray chamber (2).

5. The nozzle for the gas atomization production of the high-nickel alloy according to any one of claims 1 to 3, characterized in that the inner wall of the injection cavity (2) is obliquely arranged, the inner surface L1 of the Zr-Ti-C-B ceramic packed layer (4) is obliquely arranged, and the inclination of the inner wall of the injection cavity (2) is the same as the inclination of the outer surface of the Zr-Ti-C-B ceramic packed layer (4).