stainless steel refining process

Refining Processes in Ferrochrome and Stainless Steel ...

Refining Processes in Ferrochrome and Stainless Steel production March 10, 2020 June 10, 2020 admin 0 Comments Ferrochrome , high carbon ferrochrome , stainless steel In the scrap-based stainless steelmaking, electric arc furnace (EAF) is used to melt the scrap, after which the molten metal is further processed in AOD, VOD and/or various ladle treatments depending on the requirements set by the

Get PriceEmail contact

Smelting and Refining Technology Processes of

2020-9-30  The AOD uses a vessel that has a 3 step process in refining the stainless steel. These are Decarburization, Reduction, and Desulphurization. Decarburization simply means reducing the carbon content in the steel. Reduction is what is needed to prevent corrosion and Desulphurization is used to remove the sulfur dioxide.

Get PriceEmail contact

Modelling of the Refining Processes in the Production of ...

2018-9-25  estimated that the average content of recycled material in new stainless steel is over 60 % (ISSF, 2011c). The end-of-life recycling rate of stainless steels is approximate ly 70 % (Reck et al., 2010). Typical compositions of ferrochrome as well as chromite ore and concentrates are presented in Table 2. The compositions of the stainless steel scrap correspond with the compositions presented already in

Get PriceEmail contact

Production of Stainless Steel: Part Two :: Total Materia ...

In general the stainless steelmaking process can be classified as a Duplex or Triplex type. The Duplex refining process which is composed of electric arc furnace melting, followed by converter refining, can be extended to a Triplex refining route by installation of a VOD plant.

Get PriceEmail contact

Influence of refining process and utilization of different slags ...

2020-12-4  Abstract:Ti-stabilized 321 stainless steel was prepared using an electric arc furnace, argon oxygen decarburization (AOD) furnace, ladle furnace (LF), and continuous casting processes. In addition, the effect of refining process and utilization of different slags on the evolution of inclusions, titanium yield, and oxygen content was systematically investigated by experimental and thermodynamic analysis.

Get PriceEmail contact

Stainless Steel Manufacturing Processes – IspatGuru

Vacuum Refining Processes The use of vacuum for decarburization of steels was developed in Germany. The early processes included RH degassing, DH degassing, and the Allegheny vacuum refining (AVR) as a second step in the duplex process.

Get PriceEmail contact

How stainless steel is made - material, manufacture,

Depending on the form, the steel then undergoes further rolling steps (both hot and cold rolling), heat treatment (annealing), descaling Ito remove buildup), and polishing to produce the finished stainless steel. The steel is then sent the end user.

Get PriceEmail contact

The 6 Steps in the Manufacturing Process of a

Building a stainless steel product from the ground up involves a lot of work, technology and science. Even though there are billions of users of stainless steel items around the world, there are very few people (relatively) who know what goes into making a stainless steel product from scratch. The manufacturing process of a stainless

Get PriceEmail contact

Steelmaking and Refining Introduction to Chemistry

Modern steelmaking processes are broken into two categories: primary and secondary steelmaking. Primary steelmaking uses mostly new iron as the feedstock, usually from a blast furnace. Secondary steelmaking is performed in an electric arc furnace and uses scrap steel as the primary raw material. Refining consists of purifying an impure metal.

Get PriceEmail contact

Stainless Steel Manufacturing TSINGSHAN HOLDING

Considering that its industrial capacity of crude stainless-steel and nickel metal has reached up to 10 million tons and 300K tons respectively, it plays a certain role in the industry. “Development driven by innovation, excellence promoted by dedication", Tsingshan has business in the upstream, midstream, and downstream areas of stainless-steel industry by refining its production process and expanding its

Get PriceEmail contact

Modelling of refining processes in FeCr and stainless ...

Modelling of refining processes in FeCr and stainless steel production August 15, 2019 June 12, 2020 admin 0 Comments AOD , Converter , Ferrochrome , Modelling , VOD In stainless steel production – as in almost any kind of industrial activity – it is important to know what kind of influence different factors such as process variables and ...

Get PriceEmail contact

REFINING OF STAINLESS STEEL - UMOWSKI J,US

I claim 1. In a process of refining a chrome alloy steel melt containing between approximately 8 and 20 percent chromium whereby excessive carbon content is reduced to minimal content with little or no loss of other desirable alloying ingredients, the steps of transferring an initial chrome alloy steel melt obtained from a furnace, and containing approximately 1 to 6 percent carbon, into a ...

Get PriceEmail contact

Influence of refining process and utilization of different slags ...

2020-12-4  Influence of refining process and utilization of different slags on inclusions, titanium yield and total oxygen content of Ti-stabilized 321 stainless steel Xing-run Chen 1,2, Guo-guang Cheng 1, Yu-yang Hou 1, Jing-yu Li 1, Ji-xiang Pan 2 1 State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China

Get PriceEmail contact

Development of a New Stainless Steel Melting and

Muroran Works, Nippon Steel Corporation, started the researches to produce stainless steel by LD converter in 1965. After various difficulties were encountered and overcome in the course of these researches a new process to melt and refine stainless steel (LD-RHOB process

Get PriceEmail contact

Stainless Steel Manufacturing Processes – IspatGuru

Triplex process, where EAF steel making and converter refining is followed by refining with a vacuum system, is often desirable when the final product has very low carbon and nitrogen specifications. Triplex process tends to have overall cycle times longer than duplex process because there is an extra transfer from process converter to vacuum unit.

Get PriceEmail contact

Introduction to Stainless Steels - ASM International

2013-11-24  making various wrought stainless steel prod-ucts. Production of stainless steels is a two-stage process involving the melting of scrap and ferroalloys in an electric-arc furnace (EAF) followed by refining by argon oxygen decarburization (AOD) to adjust the carbon content and remove impurities. Alternative, melting and refining steps include ...

Get PriceEmail contact

Stainless Steel Use in the Oil Gas Industry - Unified

Refining oil and gas is an extensive process with many byproducts and cyclical processes designed to optimize efficiency and make use of as many of the compounds and chemicals involved as possible. ... Materials Performance: Stress Cracking of Duplex Stainless Steel in Refining;

Get PriceEmail contact

Prevention and controlling of vacuum boiling in the ...

In the process of vacuum oxygen decarburization (VOD) refining for stainless steel, the vacuum boiling of molten slag and steel is a kind of intractable and ubiquitous metallurgical problem.

Get PriceEmail contact

How stainless steel is made - material, manufacture,

Stainless steel can also be cut using flame cutting, which involves a flame-fired torch using oxygen and propane in conjunction with iron powder. This method is clean and fast. Another cutting method is known as plasma jet cutting, in which an ionized gas column in conjunction with an electric arc through a small orifice makes the cut.

Get PriceEmail contact

Steelmaking and Refining Introduction to Chemistry

The term “refining” is used in a narrower context. Henry Cort’s original puddling process only worked when the raw material was white cast iron, rather than the gray pig iron that was the usual raw material for finery forges. For the gray pig iron to be usable, a preliminary refining process was developed to remove the silicon.

Get PriceEmail contact

Optimization of the AO stainless steel processing cost by ...

2014-3-19  The stainless steel refining process is one step in a stainless steel production. This study will focus on the Argon Oxygen Decarburization/ Creusot Loire Uddeholm-process (AOD/CLU) process, which are used in many stainless steel plants such as Outokumpus Avesta Works and Acerinox’s Columbus Stainless Works.

Get PriceEmail contact

Influence of refining process and utilization of different slags ...

2020-12-4  Influence of refining process and utilization of different slags on inclusions, titanium yield and total oxygen content of Ti-stabilized 321 stainless steel Xing-run Chen 1,2, Guo-guang Cheng 1, Yu-yang Hou 1, Jing-yu Li 1, Ji-xiang Pan 2 1 State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China

Get PriceEmail contact

Stainless Steel Manufacturing Processes – IspatGuru

Triplex process, where EAF steel making and converter refining is followed by refining with a vacuum system, is often desirable when the final product has very low carbon and nitrogen specifications. Triplex process tends to have overall cycle times longer than duplex process because there is an extra transfer from process converter to vacuum unit.

Get PriceEmail contact

Development of a New Stainless Steel Melting and

Muroran Works, Nippon Steel Corporation, started the researches to produce stainless steel by LD converter in 1965. After various difficulties were encountered and overcome in the course of these researches a new process to melt and refine stainless steel (LD-RHOB process

Get PriceEmail contact

Production of Stainless Steels: Part Three :: Total ...

Another application of this process is heating of low and medium alloy steels by the oxidation of aluminum, carbon and silicon. Secondary refining equipment used mainly in the final refining step for stainless steel includes AOD furnace and VOD furnace. Stainless steel contains a large amount of chromium as a basic component.

Get PriceEmail contact

Stainless Steel Use in the Oil Gas Industry - Unified

Refining oil and gas is an extensive process with many byproducts and cyclical processes designed to optimize efficiency and make use of as many of the compounds and chemicals involved as possible. ... Materials Performance: Stress Cracking of Duplex Stainless Steel in Refining;

Get PriceEmail contact

How stainless steel is made - material, manufacture,

Stainless steel can also be cut using flame cutting, which involves a flame-fired torch using oxygen and propane in conjunction with iron powder. This method is clean and fast. Another cutting method is known as plasma jet cutting, in which an ionized gas column in conjunction with an electric arc through a small orifice makes the cut.

Get PriceEmail contact

Steelmaking and Refining Introduction to Chemistry

The term “refining” is used in a narrower context. Henry Cort’s original puddling process only worked when the raw material was white cast iron, rather than the gray pig iron that was the usual raw material for finery forges. For the gray pig iron to be usable, a preliminary refining process was developed to remove the silicon.

Get PriceEmail contact

Converter Stainless Steelmaking Primetals

Steel Expert Charging calculates a cost-optimized mixture of pre-melt portions. During the process full control of process steps (e.g. decarburization, desulphurization, reduction) is provided and the Steel Expert Supervision dynamically calculates the current state of steel and slag throughout the stainless steelmaking process.

Get PriceEmail contact

Stainless Steel Manufacturing TSINGSHAN HOLDING

“Development driven by innovation, excellence promoted by dedication", Tsingshan has business in the upstream, midstream, and downstream areas of stainless-steel industry by refining its production process and expanding its business. Its production bases spread over Fujian, Guangdong and Zhejiang.

Get PriceEmail contact

Copyright © 2020.Company name All rights reserved.SiteMap