CN209953500U - Screw-down nut manufactured by additive composite - Google Patents
Screw-down nut manufactured by additive composite Download PDFInfo
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- CN209953500U CN209953500U CN201920167341.6U CN201920167341U CN209953500U CN 209953500 U CN209953500 U CN 209953500U CN 201920167341 U CN201920167341 U CN 201920167341U CN 209953500 U CN209953500 U CN 209953500U
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Abstract
The utility model relates to a screw-down nut manufactured by additive composite, which is characterized in that the screw-down nut comprises a screw-down nut body, an additive transition layer, a wear-resistant alloy thread and a wear-resistant strip compounded in the thread; the screw-down nut body is a blank made of copper alloy or steel, and the additive transition layer and the wear-resistant alloy threads on the additive transition layer are directly manufactured in an additive mode in the inner cavity of the screw-down nut body; in the additive manufacturing process of the wear-resistant alloy thread, the self-lubricating wear-resistant material reinforced by particles is added to the thread perpendicular to the stress surface of the thread, so that a composite wear-resistant strip is formed. Compared with the existing screw-down nut, the screw-down nut saves materials, can freely adjust the material collocation according to the process requirements, and has greatly prolonged service life compared with the conventional screw-down nut made of single material.
Description
Technical Field
The utility model relates to a screw-down nut of vibration material disk combined manufacturing.
Background
The steel rolling mill group in the metallurgical industry is pressed down by adopting electric pressing or electric hydraulic pressing, but the pressing nut is not separated. Due to long-term operation under huge alternating impact load, the abrasion and the fatigue are serious, the clearance is larger and larger, the abnormal vibration is aggravated, and the steel rolling capacity and the product quality are reduced. The long service life of the screw nut is prolonged, and the significance is great. At present, known screw nuts are all cast and processed by adopting copper alloys such as aluminum bronze, tin bronze, brass and the like, belong to a single material reduction manufacturing process, lose a large part of copper alloy materials in subsequent thread processing, and have a long construction period. The screw thread wear is particularly prominent because the screw nut is often poor in wear resistance due to the toughness to be ensured by pressing. Therefore, how to increase the thread strength of the press nut becomes a technical problem to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model discloses not enough to the screwdown nut is made to current technology, provide a screwdown nut that increase material composite manufacturing, realized several aspects demands of the strong toughness of screwdown nut, the wearability of screw thread and saving manufacturing material, reduction of erection time simultaneously. The service life of the whole screw-down nut is greatly prolonged.
The utility model provides an above-mentioned technical problem's technical scheme as follows: the screw-down nut manufactured by additive compounding is characterized by comprising a screw-down nut body, an additive transition layer, a wear-resistant alloy thread and a composite wear-resistant strip in the thread.
On the basis of the technical scheme, the utility model discloses can also do as follows the improvement:
furthermore, the screw-down nut body is a blank made of copper alloy or steel, and the additive transition layer and the wear-resistant alloy threads on the additive transition layer are directly manufactured in an additive mode in the inner cavity of the screw-down nut body.
Furthermore, in the additive manufacturing process of the wear-resistant alloy thread, the self-lubricating wear-resistant material reinforced by particles is added to the thread perpendicular to the stress surface of the thread, so that a composite wear-resistant strip is formed. The self-lubricating wear-resistant material mainly adopts TiC, MoS2 and the like.
Furthermore, the additive transition layer is compounded in an electric arc, plasma, laser or laser and electric arc mode.
Furthermore, the pressing nut body is formed by machining after casting or waste nuts.
The utility model has the advantages that:
the utility model provides a screw-down nut of vibration material disk composite manufacturing, the screw-down nut has practiced thrift expensive material than current, and the performance can freely adjust material collocation according to the technological requirement, and the more traditional single material of its life makes the nut and is increased substantially.
Drawings
FIG. 1 is a schematic view of a down nut structure made by additive composite fabrication according to the present application;
the reference numbers are recorded as follows: 1. the screw nut comprises a screw nut body, 2, an additive transition layer, 3, a wear-resistant alloy thread and 4, wherein a wear-resistant belt is compounded in the thread.
Detailed Description
The principles and features of the present invention are described below in conjunction with examples, which are set forth only to illustrate the present invention and are not intended to limit the scope of the present invention.
A screw-down nut (see figure 1) manufactured by additive composite comprises a screw-down nut body 1, an additive transition layer 2, a wear-resistant alloy thread 3 and a thread inner composite wear-resistant belt 4; the screw-down nut body 1 is a blank made of copper alloy or steel, and the additive transition layer 2 and the wear-resistant alloy threads 3 on the additive transition layer 2 are directly manufactured in an additive mode in the inner cavity of the screw-down nut body 1; in the additive manufacturing process, the wear-resistant alloy thread 3 is perpendicular to the stress surface of the thread, and a particle-reinforced self-lubricating wear-resistant material is added to form a composite wear-resistant belt 4 in the thread. The wear-resistant alloy threads are made of copper alloy.
The additive transition layer 2 is compounded by adopting an electric arc, plasma, laser or laser and electric arc mode.
The pressing nut body 1 is formed by machining after casting or waste nuts.
As shown in fig. 1, the screw down nut manufactured by additive composite is formed by the following steps:
1. the traditional 'casting and machining' process is used for manufacturing the blank of the screw nut body, and the material is not limited to copper alloy, and can also be steel material. The screw-down nut body blank can also be manufactured by directly machining waste nuts, metal sleeves and the like.
2. And manufacturing the material increase transition layer by adopting a laser and electric arc composite material increase mode, wherein the material is a high-strength and high-toughness copper alloy material with the thickness of 2-10mm and reaches a target size.
3. The method is characterized in that the threads are printed layer by layer in a laser 3D printing mode, the material is high-strength and high-toughness copper alloy, a certain proportion of particle reinforced wear-resistant self-lubricating alloy layer with the thickness of 1mm is added at intervals of every 3mm of the thread height, and 5-20 wear-resistant belts are formed within the thread height range. The thread has a layered structure and is formed by alternately combining a copper alloy layer and a thread inner composite wear-resistant belt, and the thread inner composite wear-resistant belt is made of a wear-resistant self-lubricating alloy and copper alloy mixed material.
4. The threaded surface is finished to the desired size and roughness.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (4)
1. The screw-down nut manufactured by additive compounding is characterized by comprising a screw-down nut body (1), an additive transition layer (2), a wear-resistant alloy thread (3) and a composite wear-resistant strip (4) in the thread; the screw-down nut is characterized in that the screw-down nut body (1) is a blank made of copper alloy or steel, and the additive transition layer (2) and the wear-resistant alloy threads (3) on the additive transition layer (2) are directly manufactured in an additive mode in an inner cavity of the screw-down nut body (1).
2. A reduction nut for additive composite manufacturing according to claim 1, characterised in that the wear resistant alloy thread (3) is additively manufactured with the addition of particle reinforced self-lubricating wear resistant material perpendicular to the stressed surface of the thread, forming a composite wear resistant strip (4).
3. A reduction nut manufactured by additive composite according to claim 1 or 2, characterised in that the additive transition layer (2) is compounded by means of arc, plasma, laser or laser-plus-arc.
4. The additive composite manufacturing reduction nut according to claim 1, wherein the reduction nut body (1) is formed by machining after casting or by machining a waste nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920167341.6U CN209953500U (en) | 2019-01-30 | 2019-01-30 | Screw-down nut manufactured by additive composite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920167341.6U CN209953500U (en) | 2019-01-30 | 2019-01-30 | Screw-down nut manufactured by additive composite |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209953500U true CN209953500U (en) | 2020-01-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920167341.6U Active CN209953500U (en) | 2019-01-30 | 2019-01-30 | Screw-down nut manufactured by additive composite |
Country Status (1)
| Country | Link |
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| CN (1) | CN209953500U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111843384A (en) * | 2020-07-20 | 2020-10-30 | 河海大学常州校区 | Composite manufacturing method of impeller nut of sea water pump |
-
2019
- 2019-01-30 CN CN201920167341.6U patent/CN209953500U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111843384A (en) * | 2020-07-20 | 2020-10-30 | 河海大学常州校区 | Composite manufacturing method of impeller nut of sea water pump |
| CN111843384B (en) * | 2020-07-20 | 2022-02-01 | 河海大学常州校区 | Composite manufacturing method of impeller nut of sea water pump |
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