Unlock instant, AI-driven research and patent intelligence for your innovation.
A release agent for reducing bonding defects at high-temperature annealed edges of grain-oriented silicon steel
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A technology for high-temperature annealing and oriented silicon steel, applied in furnaces, furnace types, heat treatment equipment, etc., can solve the problems of difficult removal, high cost, unsatisfactory anti-adhesion effect, etc., and achieve significant economic benefits, reduced adhesion rate, The Effect of Raising the Yield and Comprehensive Quality Index of Oriented Silicon Steel
Active Publication Date: 2021-04-02
ANGANG STEEL CO LTD
View PDF1 Cites 0 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
American Armco (U.S. Armco Steel) company adds silicon dioxide to magnesia as an annealing separator. During the secondary recrystallization annealing process, loose magnesium silicate is formed on the surface of the steel plate, which is conducive to the protection gas entering the surface of the steel plate and purifying the steel. , but it is difficult to remove it in the subsequent scrubbing process; Peng Zhihua et al. disclosed "A Coating Formula for Oriented Silicon Steel Isolation Coating" (CN103114181A) that added nano-scale magnesium oxide, titanium dioxide, borides and antimonides. Technology can make grain-oriented silicon steel obtain a good magnesium silicate bottom layer, but the cost is high, and the release agent in the prior art is coated on the surface of the strip steel, and the anti-bonding effect is not ideal
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
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0022] 1) Select magnesium oxide powder with a purity of 99.3wt%; particle size ≤ 0.50 mm, wherein the particle size distribution of 0.20 to 0.30 mm accounts for 88% of the magnesium oxide powder;
[0023] 2) Add carbonaceous materials to the magnesium oxide powder, the mass percentage is 0.80%; mix evenly; the proportion of carbonaceous materials is shown in Table 1;
[0024] Table 1: Example 1 carbonaceous material
[0025] Types of carbonaceous materials particle size requirements Mass % Specific Surface Area Requirements graphite 0.060~0.100mm 60％ 5.0~15m 2 / g
Embodiment 2
[0027] 1) The purity of magnesium oxide is selected to be 98.6wt%; the particle size is ≤0.50mm, and the particle size distribution of 0.20-0.30mm accounts for 87%;
[0028] 2) Magnesium oxide powder is added with carbonaceous material, and the mass percentage is 1.00%; mix well; the proportion of carbonaceous material is shown in Table 2;
[0029] Table 2: Example 2 carbonaceous material
[0030] Types of carbonaceous materials particle size requirements Mass % Specific Surface Area Requirements graphite 0.060~0.100mm 55％ 5.0~15m 2 / g
Embodiment 3
[0032] 1) The purity of magnesium oxide is selected to be 99.0wt%; the particle size is ≤0.50mm, and the particle size distribution of 0.20-0.30mm accounts for 90%;
[0033] 2) Magnesium oxide powder is added with carbonaceous material, the mass percentage is 0.90%; mix well; the ratio of carbonaceous material is shown in Table 3;
[0034] Table 3: Example 3 carbonaceous material
[0035] Types of carbonaceous materials particle size requirements Mass % Specific Surface Area Requirements graphite 0.060~0.100mm 50％ 5.0~15m 2 / g
[0036] After the implementation of the technical proposal, the bonding ratio of the edges in the high-temperature annealing production of the oriented silicon steel is reduced by more than 30-50%.
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
Property
Measurement
Unit
particle diameter
aaaaa
aaaaa
specific surface area
aaaaa
aaaaa
particle diameter
aaaaa
aaaaa
Login to View More
Abstract
The invention discloses an isolation agent for reducing bonding defects of high-temperature annealing edge parts of oriented silicon steel. A carbon material accounting for 0.20%-2.00% of the total mass percentage of a magnesium oxide powder is added into the isolation agent. Compared with the prior art, the isolation agent for reducing the bonding defects of the high-temperature annealing edge parts of the oriented silicon steel has the beneficial effects that the requirements of the steel coil high-temperature purification annealing process are met by virtue of the granularity and slag system composition adjustment and the selection of the high-temperature slag system isolation agent, and the bonding defects of the edge parts is reduced as well, the yield of the oriented silicon steel isimproved, and the comprehensive quality index of the oriented silicon steel is improved; and the implication of the invention has the advantages that the bonding rate is reduced by 30%-50% or above in the high-temperature heat treatment production, and the economic benefits are remarkable.
Description
technical field [0001] The invention belongs to the field of cold-rolled oriented electrical steel, and in particular relates to a spacer for reducing bonding defects at high-temperature annealed edges of oriented silicon steel. Background technique [0002] Cold-rolled grain-oriented electrical steel products are important metal functional soft magnetic materials for the development of the electric power industry, and are mainly used in the manufacture of iron cores for various types of power transmission and transformation transformers. [0003] Only a few large iron and steel complexes at home and abroad can carry out the production of the whole process and the whole process. It is one of the typical products of the metallurgical long process. Because of the difficulty of production and the complicated process, it is called "the jewel in the crown" of metallurgical products. [0004] An important process link in the production of oriented silicon steel products is the hig...
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
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to View More