Supercharge Your Innovation With Domain-Expert AI Agents!

Steel sheet passivation process, passivated steel sheet and vapor chamber

A technology of vapor chamber and steel sheet, which is applied in the coating process of metal materials, lighting and heating equipment, indirect heat exchangers, etc., and can solve problems such as difficult ultra-thinning, non-condensable gas generation, and reduced service life of steel , to achieve the effect of strong corrosion resistance, good bonding force and dense passivation film

Inactive Publication Date: 2021-04-09
AAC TECH NANJING
View PDF5 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The upper cover and lower cover of the traditional vapor chamber are mostly copper or copper alloy, which lacks material strength and support effect, making it difficult to be ultra-thin
While steel is used as a high-strength support material for the vapor chamber, non-condensable gas will be generated during use, which cannot be used directly, and chemical or physical covering must be carried out on the inside of the cover plate
[0004] The traditional solution is to improve the above problems by covering the surface of the steel with a copper layer, but due to the formation of a primary battery between the copper and the steel, the reaction between the steel and water is accelerated, thereby reducing the service life of the steel

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Steel sheet passivation process, passivated steel sheet and vapor chamber
  • Steel sheet passivation process, passivated steel sheet and vapor chamber
  • Steel sheet passivation process, passivated steel sheet and vapor chamber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0089] S10. Obtain a stainless steel cover plate by etching a stainless steel sheet with a thickness of 0.05-0.4 mm.

[0090] S20, sequentially performing degreasing treatment, pickling treatment and activation treatment on the stainless steel cover plate.

[0091] Degreasing: Soak the stainless steel cover in 80°C degreasing solution for 30 minutes, and then immediately clean it with pure water. The components of the degreasing solution are 20g / L sodium hydroxide, 20g / L sodium carbonate and 4mL / OP emulsifier of L;

[0092] Pickling: Soak the degreased stainless steel cover in the pickling solution for 1 min at room temperature, and then immediately clean it with pure water. The components of the pickling solution are 20% hydrochloric acid and 3g / L if Ding;

[0093] Activation: Soak the pickled stainless steel cover plate in the activation solution at room temperature for 30s, take it out, rinse it quickly, and immediately put it into the tank for the next step. The activat...

Embodiment 2

[0096] In embodiment 2, S10 and S20 are consistent with embodiment 1.

[0097] S30. Passivation treatment: soak the activated stainless steel cover plate in a passivation solution at 70°C for 30 minutes, wash it with pure water, and dry it in an oven at 80°C for 20 minutes to form a passivation film on the surface of the stainless steel cover plate , to obtain a passivated stainless steel cover plate, the composition of the passivation solution is 7g / L of benzotriazole, 0.5g / L of cerium nitrate, 5g / L of sulfosalicylic acid and 2g / L of polyvinyl alcohol, The pH of the passivation solution is 6.

Embodiment 3

[0099] In embodiment 3, S10 and S20 are consistent with embodiment 1.

[0100] S30. Passivation treatment: soak the activated stainless steel cover plate in a passivation solution at 45°C for 10 minutes, wash it with pure water, and dry it in an oven at 80°C for 15 minutes to form a passivation film on the surface of the stainless steel cover plate , to obtain a passivated stainless steel cover plate, the composition of the passivation solution is 10g / L of benzotriazole, 3g / L of zinc sulfate, 8g / L of sulfosalicylic acid and 1g / L of polyvinyl alcohol, passivation The pH of the solution is 4.8.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Login to View More

Abstract

The invention provides a steel sheet passivation process. The steel sheet passivation process comprises the following steps that a steel sheet is provided; the steel sheet is pretreated, and a pretreated steel sheet is obtained; and the pretreated steel sheet is soaked in a passivation solution to be subjected to passivation treatment, and after passivation treatment is completed, the steel sheet is cleaned and dried to obtain a passivated steel sheet. The passivation solution of the steel sheet passivation process contains benzene ring organic matter and inorganic matter, and a passivation film formed on the passivated steel sheet prepared through the steel sheet passivation process is a composite film layer containing carbon chains and inorganic oxide. When the passivated steel sheet is used as a cover plate of a vapor chamber, the passivation film formed on the passivated steel sheet reduces the reaction between the passivated steel sheet and water, compared with a steel sheet with the surface covered with a copper layer, the passivated steel sheet cannot accelerate the reaction between steel and water due to the fact that a primary battery is formed between copper and the steel, so that the service life of the passivated steel sheet is prolonged by about 2-7 times. The invention further provides the passivated steel sheet and the vapor chamber.

Description

【Technical field】 [0001] The invention relates to the technical field of heat dissipation devices, in particular to a steel sheet passivation process, a passivated steel sheet prepared by the steel sheet passivation process, and a uniform temperature plate including the passivated steel sheet. 【Background technique】 [0002] The vapor chamber is a two-dimensional heat conduction device. After absorbing heat, the liquid at the bottom of the vacuum chamber of the vapor chamber evaporates and diffuses into the vacuum chamber, conducts the heat to the top, and then condenses into a liquid and returns to the bottom. This evaporation and condensation process, which is similar to that of a refrigerator air conditioner, circulates rapidly in the vacuum chamber, achieving a very high heat dissipation efficiency. [0003] The upper and lower cover plates of traditional vapor chambers are mostly made of copper or copper alloy, which lacks material strength and supporting effect, making...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C23C22/50C23C22/78C23G1/08C23G1/19F28D15/02
CPCC23C22/50C23C22/78C23G1/19C23G1/08F28D15/02
Inventor 陈晓杰徐莎莎石一卉
Owner AAC TECH NANJING
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com