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

Method for making steel container steel slab containing copper by using accurate determination of copper content in nickel-copper alloy

A technology of nickel-copper alloy and copper content, which is applied in the field of metallurgy, can solve the problems of insufficient corrosion resistance and surface quality, achieve good precision, improve the quality of steelmaking billets and the quality of final rolled products, and avoid The effect of fluctuations in copper content

Active Publication Date: 2021-12-10
LIUZHOU IRON & STEEL
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, the control of copper content in container steel is unstable, either failing to meet the requirements of corrosion resistance, or failing to ensure good surface quality
[0006] In the process of realizing the present invention, the applicant found that there are at least the following problems in the prior art: the existing container steel plates can well meet the requirements of corrosion resistance and surface quality

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
  • Method for making steel container steel slab containing copper by using accurate determination of copper content in nickel-copper alloy
  • Method for making steel container steel slab containing copper by using accurate determination of copper content in nickel-copper alloy
  • Method for making steel container steel slab containing copper by using accurate determination of copper content in nickel-copper alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0077] EXAMPLES: The method of determining the copper content in the nickel copper alloy in the present invention employs the following specific steps:

[0078] Using dilute nitric acid dissolved samples, ammonia water separation iron interference elements, regulate pH = 5.5 in the filtrate, add excess ethylenediamine tetracetic acid EDTA solution to enable all complexation of the element, then add from thiourea, 1.10-two Nitrogen (neighboria) and ascorbic acid composition of combined masking agent selective decomposition Cu-EDTA complex, and finally the released EDTA released by zinc standard solution is calculated by calculating the content of copper.

[0079] (1) Samples of samples: Weigh 0.5004 g of nickel-copper alloy samples in 200 ml beaker, add 20 mL (1 + 2, 1 parts of concentrated nitric acid + 2 parts water) nitric acid, heating to completely dissolve, remove cooling, and A sample solution was obtained in a 250 ml capacity bottle.

[0080] (2) Interference separation: fr...

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
melting pointaaaaaaaaaa
Login to View More

Abstract

The present invention provides a method for producing copper-containing container steel plate casting slabs by using the accurate measurement of copper content in nickel-copper alloys. The method for producing copper-containing container steel plates includes: molten iron pretreatment, converter smelting, and LF furnace refining; wherein, the Converter smelting includes: first measure the copper content in nickel-copper alloy, and then add nickel-copper alloy; LF furnace refining needs to carry out inclusion denatured calcium treatment, and the sedation time after refining is ≥ 7 minutes; the determination of copper content in nickel-copper alloy includes the following : Interference separation, determination of copper content in the filtrate, correction of precipitation adsorption, adding the copper content measured in the filtrate to the copper content measured by correction of precipitation adsorption; the interference separation is the separation of iron interference elements with ammonia water ; Corrected by measuring the copper content in the test solution with ICP spectroscopy. The surface quality of the slab produced by the invention is good, and no cracks are found in the pickling of the edges and corners.

Description

Technical field [0001] The present invention belongs to the field of metallurgy, and more particularly to a method of producing a copper-containing container steel sheet, in particular, a method of producing a copper container steel sheet coil using a precise measurement of copper content in nickel copper alloys. Background technique [0002] Nickel, copper is a major alloying element substance for steelmaking, widely used for alloy agents such as steel type steel, structural steel, stainless steel. Copper plays an active cathode in steel, which can promote the corrosion speed of steel in steel under certain conditions. The enrichment of the Cu in rust layers can also improve the protection of rust layers and become a protective film that prevents rust from further in-depth, thereby improving the corrosion resistance of steel. This capability of copper is widely used in weathering steel such as containers. [0003] At the same time, at the same time, the copper-containing steel h...

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
Patent Type & Authority Patents(China)
IPC IPC(8): G01N31/16G01N21/78G01N21/73C21C7/00C21C5/28C22C33/06C22C38/42C22C38/04C22C38/02
CPCC22C38/42C22C38/02C22C38/04C22C38/002C22C33/06C21C5/28C21C7/0006G01N31/16G01N21/78G01N21/73
Inventor 欧军刘川俊雷坚李宗强黄义伟陈海胡麟刘祖强熊小庆
Owner LIUZHOU IRON & STEEL
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