Investigation on Improvement of Center Porosity with Heavy Reduction in Continuously Cast Thick Slabs

2016 ◽  
Vol 88 (2) ◽  
pp. 1600061 ◽  
Author(s):  
Zhigang Xu ◽  
Xinhua Wang ◽  
Min Jiang
Keyword(s):  
Continuously Cast ◽  
Center Porosity

scholarly journals On Defects Originated from the Center Porosity of the Continuously Cast Blooms

1977 ◽  
Vol 63 (8) ◽  
pp. 1260-1268
Author(s):  
Ko TASAKA ◽  
Yukiyoshi ITOH ◽  
Hirobumi MAEDE ◽  
Tetsuo OSASA ◽  
Shigeyoshi TAKAO
Keyword(s):  
Continuously Cast ◽  
Center Porosity

Influence of technology parameters of free-cutting steel continuous casting on the billet internal structure

2020 ◽  
Vol 76 (2) ◽  
pp. 139-142
Author(s):  
A. T. Kunakbaeva ◽  
A. M. Stolyarov ◽  
M. V. Potapova
Keyword(s):  
Regression Analysis ◽  
Continuous Casting ◽  
Internal Structure ◽  
Sulfur Content ◽  
Manganese Content ◽  
High Quality ◽  
Correlation And Regression Analysis ◽  
Cutting Steel ◽  
Continuously Cast

Free-cutting steel gains specific working properties thanks to the high content of sulfur and phosphorus. These elements, especially sulfur, have a rather high tendency to segregation. Therefore, segregation defects in free-cutting steel continuously cast billets can be significantly developed. The aim of the work was to study the influence of the chemical composition of freecutting steel and casting technological parameters on the quality of the macrostructure of continuously cast billets. A metallographic assessment of the internal structure of cast metal made of free-cutting steel and data processing by application of correlation and regression analysis were the research methods. The array of production data of 43 heats of free-cutting steel of grade A12 was studied. Steel casting on a five-strand radial type continuous casting machine was carried out by various methods of metal pouring from tundish into the molds. Metal of 19 heats was poured with an open stream, and 24 heats – by a closed stream through submerged nozzles with a vertical hole. High-quality billets had a cross-sectional size of 150×150 mm. The macrostructure of high-quality square billets made of free-cutting steel of A12 grade is characterized by the presence of central porosity, axial segregation and peripheral point contamination, the degree of development of which was in the range from 1.5 to 2.0 points, segregation cracks and strips – about 1.0 points. In the course of casting with an open stream, almost all of these defects are more developed comparing with the casting by a closed stream. As a result of correlation and regression analysis, linear dependences of the development degree of segregation cracks and strips both axial and angular on the sulfur content in steel and on the ratio of manganese content to sulfur content were established. The degree of these defects development increases with growing of sulfur content in steel of A12 grade. These defects had especially strong development when sulfur content in steel was of more than 0.10%. To improve the quality of cast metal, it is necessary to have the ratio of the manganese content to the sulfur content in the metal more than eight.

Minimization of Thermal Stresses in Continuously-Cast Ingot with Restriction on its Molten-Metal Pool Volume

1999 ◽  
Vol 30 (4-6) ◽  
pp. 296-302
Author(s):  
F. V. Nedopekin ◽  
Victor K. Tolstykh ◽  
N. A. Volodin ◽  
V. V. Belousov ◽  
S. V. Gridin
Keyword(s):  
Molten Metal ◽  
Thermal Stresses ◽  
Metal Pool ◽  
Cast Ingot ◽  
Continuously Cast ◽  
Molten Metal Pool

Improvement of Continuously Cast Slab Surface and Performance of Rolling the Slab Free from Surface Conditioning

1981 ◽  
Vol 67 (8) ◽  
pp. 1229-1235 ◽  
Author(s):  
Minoru KITAMURA ◽  
Tosiyuki SOEJIMA ◽  
Sinzi KOYAMA ◽  
Yosihiro MATUDA ◽  
Junji ABU ◽  
...  
Keyword(s):  
Slab Surface ◽  
Cast Slab ◽  
Surface Conditioning ◽  
Continuously Cast ◽  
And Performance

Development of Rolling Technique for Large H-shapes from Continuously Cast Slabs

1981 ◽  
Vol 67 (15) ◽  
pp. 2483-2492
Author(s):  
Tadaaki YANAZAWA ◽  
Teruaki TANAKA ◽  
Masashi YAMASHITA ◽  
Hiroshi OKUMURA ◽  
Takashi KUSABA
Keyword(s):  
Rolling Technique ◽  
Continuously Cast

TYPE 1 NI-RESIST

Alloy Digest ◽  
1989 ◽  
Vol 38 (12) ◽  
Keyword(s):  
Cast Iron ◽  
Physical Properties ◽  
Heat Treating ◽  
Corrosion Resistant ◽  
Austenitic Alloy ◽  
Continuously Cast ◽  
Alloy Cast Iron ◽  
Alloy Cast

Abstract Type 1 Ni-Resist Dura-Bar is a corrosion resistant austenitic alloy cast iron, continuously cast. It has less than 10% alloy carbides, well dispersed and fine graphite flakes. It is non magnetic. This datasheet provides information on composition, physical properties, microstructure, and elasticity. It also includes information on heat treating. Filing Code: CI-60. Producer or source: Federal Bronze Products Inc..

Inter-Columnar Macro-Segregation in Continuously Cast Steel; Characterization, Possible Reasons, and Consequences

2021 ◽  
Author(s):  
Seenivasan Rajiah ◽  
Manjini Sambandam ◽  
Sethu Prasanth Shanmugam ◽  
Saju Vikraman ◽  
Rajendra Taticherla
Keyword(s):  
Cast Steel ◽  
Continuously Cast

Production of High-Quality Wheel Steel. Part 1. Production Aspects of Continuously-Cast Billet Quality for Railway Wheel Manufacture

Metallurgist ◽  
2021 ◽  
Author(s):  
D. A. Pumpyanskiy ◽  
S. V. Tyutyunik ◽  
E. A. Kolokolov ◽  
A. A. Mescheryachenko ◽  
I. S. Murzin ◽  
...  
Keyword(s):  
Steel Part ◽  
Wheel Steel ◽  
Cast Billet ◽  
High Quality ◽  
Railway Wheel ◽  
Billet Quality ◽  
Continuously Cast Billet ◽  
Continuously Cast
Sign in / Sign up

Export Citation Format

Share Document