Sealing nail welding dust hood
By setting a chrome-plated layer and a sandblasting treatment layer on the inner wall of the welding dust hood, the problem of welding ash residue caused by the high surface roughness of the existing dust hood was solved, and the welding quality and equipment cleanliness were improved.
Patent Information
- Application Number
- CN202620148419.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2026-02-02
- Publication Date
- 2026-03-20
- Estimated Expiration
- 2036-02-02
AI Technical Summary
Existing dust collectors have high surface roughness, making it easy for welding ash particles to embed into surface micropores, resulting in welding ash residue that affects welding quality and equipment cleanliness. Furthermore, existing cleaning methods are prone to damaging equipment or causing secondary pollution.
The welding dust hood design combines a chrome-plated layer and a sandblasted layer. The surface roughness of the chrome-plated layer is reduced to 0.4-0.8μm, and the bonding layer is a sandblasted layer. The main body of the welding dust hood is made of 316L stainless steel, and the dust suction pipe is connected to the welding dust removal chamber.
Reduce welding ash residue, improve cleaning efficiency, reduce the frequency of manual cleaning, enhance the adhesion between the coating and the substrate, and ensure equipment stability and cleanliness.
Smart Images
Figure CN224011518U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to welding dust removal cover technical field, concretely relates to a kind of sealing nail welding dust removal cover. BACKGROUND
[0002] In welding process, the residue control of welding dust is the core problem affecting welding quality and equipment cleanliness. Especially in the cleaning station of test section sealing nail process, as the core component of welding dust collection and airflow management, the surface characteristics of dust removal cover directly determine the adhesion of welding dust and cleaning efficiency. Current dust removal cover has the following problems:
[0003] The existing dust removal cover is mostly cast or machined from ordinary metal materials (such as carbon steel or stainless steel), and its surface roughness (Ra value) is usually above 3.2 μm. This micro concave-convex structure easily forms the adhesion point of welding dust particles, causing the welding dust to adhere to the weld surface after being disturbed by airflow or melted by high temperature in the welding process, resulting in defects such as porosity, slag inclusion or false welding, and ultimately affecting the bonding strength and sealing performance of the sealing nail.
[0004] For the above problems, the common means in the prior art includes mechanical scraping of welding dust, high-pressure water washing or steam cleaning. However, these methods all have obvious defects: mechanical scraping: may damage the surface of the dust removal cover, aggravate the welding dust residue and shorten the service life of the equipment; high-pressure water washing / steam cleaning: easy to cause water vapor residue, leading to secondary pollution, and frequent cleaning will corrode the metal material, reducing the structural stability.
[0005] In summary, the existing dust removal cover design has a systematic contradiction in surface roughness control and welding dust residue management, and an innovative solution with smoothness, high-temperature resistance and economy is urgently needed to realize the stabilization and cleanliness of the welding process. INVENTION CONTENTS
[0006] The utility model aims at solving the problems of high surface roughness of existing dust removal cover, easy embedding of welding dust particles into surface micropores, welding defects caused by welding dust residue, high adhesion of welding dust caused by high roughness, low collection efficiency of negative pressure airflow on welding dust and insufficient negative pressure dust collection effect.
[0007] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions:
[0008] A sealing nail welding dust removal cover, comprising a welding dust removal cover body, a welding dust removal cavity is arranged in the welding dust removal cover body, characterized in that: a bonding layer and a smooth surface layer are arranged in sequence on the inner wall of the welding dust removal cavity, the bonding layer is located between the inner wall of the welding dust removal cavity and the smooth surface layer; the smooth surface layer is a chromium plating layer, the bonding layer is a sandblasting treatment layer, the surface roughness of the chromium plating layer is Ra0.4-0.8 μm, and the thickness of the chromium plating layer is 5-15 μm.
[0009] Further improvement is that the welding dust cover body is a stainless steel dust cover body.
[0010] Further improvement is that the welding dust cover body is a 316L stainless steel dust cover body with chromium content ≥ 16%.
[0011] Further improvement is that the bonding layer is a sand blasting treatment layer formed by sand blasting treatment of aluminum oxide with particle size of 80-120 mesh.
[0012] Further improvement is that the roughness of the sand blasting treatment layer is Ra1.6-2.5 μm to ensure the adhesion of the chromium plating layer.
[0013] Further improvement is that the chromium plating layer is an electroplated chromium plating layer or a chemical plated chromium plating layer.
[0014] Further improvement is that the welding dust cover body is further fixedly connected with a dust suction pipe, and the dust suction pipe is communicated with the welding dust removal cavity.
[0015] After the above technical scheme is adopted, the following beneficial effects are obtained compared with the prior art:
[0016] The surface roughness of the chromium plating layer is reduced to 0.4-0.8 μm, the thickness of the chromium plating layer is 5-15 μm, a dense, smooth and high-temperature-resistant metal surface is formed, the welding dust residue is significantly reduced, the smooth chromium plating surface makes the welding dust particles more easily carried away by the airflow, the manual cleaning frequency is significantly reduced, the cleaning efficiency is improved, and manpower and material resources are saved; the welding dust cover body is subjected to sand blasting treatment (aluminum oxide particle size of 80-120 mesh) before chromium plating, and the adhesion between the plating layer and the substrate is enhanced. BRIEF DESCRIPTION OF DRAWINGS
[0017] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creative labor.
[0018] Figure 1 is a structural schematic diagram of the present application;
[0019] Figure 2 is a schematic diagram of the internal structure of the present application;
[0020] Figure 3 is an enlarged view of A part in the present application Figure 2
[0021] Explanation of reference signs: welding dust removal cover main body 1, welding dust removal cavity 2, bonding layer 3, smooth surface layer 4, dust suction pipe 5. DETAILED DESCRIPTION
[0022] Reference Figure 1 - Figure 3 The technical scheme adopted in the specific embodiment is shown in the drawings:
[0023] A sealed nail welding dust removal cover, comprising a welding dust removal cover main body 1, wherein a welding dust removal cavity 2 is arranged in the welding dust removal cover main body 1, characterized in that: the inner wall of the welding dust removal cavity 2 is sequentially provided with a bonding layer 3 and a smooth surface layer 4, the bonding layer 3 is located between the inner wall of the welding dust removal cavity 2 and the smooth surface layer 4; the smooth surface layer 4 is a chromium plating layer, the bonding layer 3 is a sandblasting treatment layer, the surface roughness of the chromium plating layer is Ra0.4-0.8 μm, and the thickness of the chromium plating layer is 5-15 μm.
[0024] The thickness of the chromium plating layer is 5-15 μm, and the plating layer is easy to wear when it is too thin (<5 μm), which leads to the increase of roughness; and stress cracking may be caused when it is too thick (15 μm).
[0025] The welding dust removal cover main body 1 is a stainless steel dust removal cover main body.
[0026] The welding dust removal cover main body 1 is a 316L stainless steel dust removal cover main body with a chromium content of ≥16%.
[0027] The bonding layer 3 is a sandblasting treatment layer formed by sandblasting treatment of aluminum oxide with a particle size of 80-120 mesh.
[0028] The roughness of the sandblasting treatment layer is Ra1.6-2.5 μm, so as to ensure the adhesion of the chromium plating layer; and high-temperature (200-300 ℃) tempering treatment is needed after chromium plating.
[0029] The chromium plating layer is an electroplated chromium plating layer or a chemical plated chromium plating layer.
[0030] The material of the welding dust removal cover main body 1 needs to be matched with the material of the welding dust removal cover main body 1 during chromium plating, so as to avoid electrochemical corrosion; and the tempering temperature needs to be strictly controlled, so as to avoid the degradation of the performance of the base material.
[0031] The welding dust removal cover main body 1 is further fixedly connected with a dust suction pipe 5, and the dust suction pipe 5 is in communication with the welding dust removal cavity 2.
[0032] Working principle of the utility model:
[0033] The surface roughness Ra value of the traditional dust removal cover is ≥3.2 μm, which leads to the easy adhesion of welding dust particles to the inner wall of the cover body, forms a dust layer, and affects the airflow stability and welding quality of the welding area.
[0034] The welding dust removal cover body is subjected to sand blasting treatment (alumina particle size 80-120 mesh) before chrome plating to enhance the bonding force of the plating layer and the welding dust removal cover body; residual stress is eliminated by high-temperature tempering (200-300 DEG C) after chrome plating to avoid the plating layer from falling off; welding dust residue is significantly reduced, and cleaning frequency is reduced.
[0035] The basic principle and main features of the utility model and its advantages are shown and described above, and the skilled in the art should understand that the utility model is not limited by the above examples, and the above examples and descriptions are only to illustrate the principle of the utility model, and the utility model will have various changes and improvements without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed, and the scope of protection of the utility model is defined by the appended claims and their equivalents. The utility model is not described in detail, and is the known technology of the skilled in the art.
Claims
1. A sealing nail welding dust hood, comprising a welding dust hood body, wherein a welding dust removal chamber is provided inside the welding dust hood body, characterized in that: The inner wall of the welding dust removal chamber is provided with a bonding layer and a smooth surface layer in sequence. The bonding layer is located between the inner wall of the welding dust removal chamber and the smooth surface layer. The smooth surface layer is a chromium-plated layer, and the bonding layer is a sandblasted layer. The surface roughness of the chromium-plated layer is Ra0.4-0.8μm, and the thickness of the chromium-plated layer is 5-15μm.
2. The sealing nail welding dust cover according to claim 1, characterized in that: The main body of the welding dust hood is a stainless steel dust hood body.
3. The sealing nail welding dust cover according to claim 2, characterized in that: The main body of the welding dust hood is a 316L stainless steel dust hood body with a chromium content of ≥16%.
4. The sealing nail welding dust cover according to claim 1, characterized in that: The bonding layer is a sandblasted layer formed by sandblasting alumina with a particle size of 80-120 mesh.
5. A sealing nail welding dust collector cover according to claim 1, characterized in that: The roughness of the sandblasted layer is Ra1.6-2.5μm.
6. The sealing nail welding dust cover according to claim 1, characterized in that: The chromium plating layer is either an electroplated chromium plating layer or a chemically plated chromium plating layer.
7. A dust collector cover for sealing nail welding according to claim 1, characterized in that: A dust suction pipe is also fixedly connected to the main body of the welding dust removal hood, and the dust suction pipe is connected to the welding dust removal chamber.