Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method of ultrathin, large-size, high-silicon silicon steel sheet by electron beam physical vapor deposition

A technology of physical vapor deposition and silicon steel sheets, applied in heat treatment equipment, heat treatment process control, manufacturing tools, etc., can solve problems such as incapable of industrial production, achieve high work efficiency, reasonable design, and easy control of process parameters.

Inactive Publication Date: 2006-07-19
HARBIN INST OF TECH
View PDF1 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an ultra-thin, large-size, high-silicon silicon steel sheet electron beam physical vapor deposition preparation method to solve the problem that the existing ultra-thin, large-size, high-silicon silicon steel sheet can only be prepared in the laboratory and cannot The problem of industrial production

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
  • Preparation method of ultrathin, large-size, high-silicon silicon steel sheet by electron beam physical vapor deposition

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0006] Embodiment 1: The method of this embodiment is as follows: in a vacuum environment, use an electron beam as a heat source to bombard the raw material of the high-silicon silicon steel sheet, so that the raw material of the high-silicon silicon steel sheet is melted into a vapor state, and then the high silicon steel sheet in the vapor state is The silicon steel sheet raw material is deposited on the substrate to obtain a high-silicon silicon steel sheet, and the high-silicon silicon steel sheet can be peeled off from the substrate. The raw material of the high-silicon silicon steel sheet is the high-silicon ferroalloy raw material, which can be obtained by vacuum smelting with silicon steel sheet scrap (or pure iron) and pure silicon.

[0007] The specific steps of this embodiment are as follows: 1. Prepare a high-silicon ferroalloy ingot as a raw material for a high-silicon silicon steel sheet: pure iron and pure silicon (pure silicon and silicon steel sheet scraps can ...

specific Embodiment approach 2

[0008] Specific embodiment two: the following combination figure 1 The present embodiment will be specifically described. The steps of this embodiment are as follows: 1. Put the pure iron ingot 1 and the pure silicon material 2 into the No. 1 crucible 3 and the No. 2 crucible 4 respectively, and place a layer of CaF on the surface of the pure iron ingot 1 2 2. Install the substrate 5, adjust the distance between the substrate 5 and the upper surface of the pure iron ingot 1 between 300-500mm, scrub the lower surface of the substrate 5 with acetone, seal the vacuum chamber 6, and pump the vacuum chamber 6 Vacuum, generally pumped to a vacuum of about 10 -4 Pa; 3. Make the substrate 5 rotate around its own center line in its own plane, set the rotational speed to 5-30rpm, and heat the substrate 5 to 500-800°C at the same time; 4. Use the electron beam generated by the electron gun 7 to evaporate first CaF 2 powder to form a layer of 5-10 μm CaF on the lower surface of the sub...

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

No PUM Login to View More

Abstract

The preparation method for ultrathin lager-size high-silicon electron-beam PVD silicon steel sheet comprises: in vacuum, bombarding with electron beam as heat source to melt the silicon steel sheet material into vapor state; then, depositing the sheet on substrate to obtain the high-silicon silicon sheet plate; finally, uncovering the plate. This invention overcomes the defect in prior art, controls evaporating speed of different material to adjust the product intergradient and thickness, has high efficiency, and special fit to industrialization.

Description

technical field [0001] The invention relates to a method for preparing silicon steel sheets, in particular to a method for preparing silicon steel sheets by electron beam physical vapor deposition. Background technique [0002] Fe-6.5wt.%Si silicon steel has excellent soft magnetic properties, such as: low iron loss at medium and high frequencies, low hysteresis and expansion, low coercivity, high magnetic permeability and saturation magnetic induction intensity, and it also has good stability. The advantage is that it is an excellent soft magnetic material. It is especially suitable for the iron core of medium and high frequency motors, transformers and audio frequency transformers. However, due to the poor machinability of this material, the traditional rolling process is difficult to process, and there has been no industrialization in China. Only small-sized high-silicon silicon steel sheets can be made in the laboratory using processes such as rapid-setting methods. Th...

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): C23C14/30C23C14/54C21D1/26C21D11/00
Inventor 赫晓东李垚李晓孙跃
Owner HARBIN INST OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com