Modeling of rolling force of ultra-heavy plate considering the influence of deformation penetration coefficient

2019 ◽  
Vol 159 ◽  
pp. 373-381 ◽  
Author(s):  
Shun Hu Zhang ◽  
Lei Deng ◽  
Qing Yu Zhang ◽  
Qi Han Li ◽  
Ji Xin Hou
Keyword(s):  
Rolling Force ◽  
Heavy Plate ◽  
Penetration Coefficient

scholarly journals Modeling of rolling force of ultra-heavy plate accounting for gradient temperature

2021 ◽  
Vol 13 (9) ◽  
pp. 168781402110476
Author(s):  
Shun Hu Zhang ◽  
Li Zhi Che
Keyword(s):  
Temperature Distribution ◽  
Velocity Field ◽  
Decomposition Method ◽  
Rolling Force ◽  
Metal Flow ◽  
Maximum Error ◽  
Root Vector ◽  
Force Model ◽  
Heavy Plate ◽  
Vector Decomposition

In this paper, the nonlinear specific plastic power of the Mises criterion is integrated analytically to establish the rolling force model of gradient temperature rolling for an ultra-heavy plate by a new method called the root vector decomposition method. Firstly, the sinusoidal velocity field is proposed in terms of the characteristics of metal flow during ultra-heavy plate rolling, which satisfies the kinematically admissible condition. Meanwhile, the characteristics of the temperature distribution along the thickness direction of the plate during the gradient temperature rolling is described mathematically. Based on the velocity field and the temperature distribution expression, the rolling energy functional is obtained by using the root vector decomposition method, and the analytical solution of rolling force is derived according to the variational principle. Through comparison and verification, the rolling force model solved by the root vector decomposition method in this paper is in good agreement with the measured one, and the maximum error of the rolling force is just 10.21%.

Slab analysis based on stream function method in chamfer edge rolling of ultra-heavy plate

2016 ◽  
Vol 231 (7) ◽  
pp. 1237-1251
Author(s):  
JG Ding ◽  
HY Wang ◽  
DH Zhang ◽  
DW Zhao
Keyword(s):  
Velocity Field ◽  
Stream Function ◽  
Function Method ◽  
Rolling Force ◽  
Yield Criterion ◽  
Three Dimensional ◽  
Total Power ◽  
Shape Coefficient ◽  
Heavy Plate ◽  
Dog Bone

In this paper, three-dimensional velocity field is proposed by means of stream function method with bisecting yield criterion in chamfer edge rolling of ultra-heavy plate. Parabolic dog-bone shape function is derived so as to obtain velocity field with fixed angle of chamfer edge by stream function method, dog-bone shape coefficient η can be derived from volume invariant condition, and then the plastic deformation power, shear power as well as friction power are obtained respectively with the bisecting yield criterion. Summing up the power contributions, total power functional is presented, from which minimum value can be obtained by searching method, and vertical rolling force and torque are also finally obtained. The predictions of roll force and torque are compared with different angles of chamfer edge as well as different plate thicknesses. The results are shown to be in a very good agreement with the analytical and experimental results.

Anslysis of the 5-m Heavy Plate Mill Stand Based on MSC.Marc Finite Element Method

2011 ◽  
Vol 189-193 ◽  
pp. 1844-1848
Author(s):  
Zhen Yi Huang ◽  
Min Xia Chen ◽  
Chang Hong Li ◽  
Sheng Fu Wu ◽  
Wei Wang ◽  
...  
Keyword(s):  
Finite Element ◽  
Rolling Mill ◽  
Rolling Force ◽  
Rolling Process ◽  
Simulation Software ◽  
Stress And Strain ◽  
Plate Mill ◽  
Heavy Plate ◽  
System Pressure ◽  
Roller System

The stand is the largest and most important part in rolling-mill components.It bears tremendous rolling force, instant impact and part of the rolling torque during the rolling process .In addition ,roller system ,pressure and balance system also installed in it. Therefore, rolling mill must be equipped with sufficient strength and stiffness to ensure the safety of mill equipment and accuracy of the size of products. In this paper, It uses the finite element simulation software MSC.Marc to simulate and analyze the 3-D finite 5-m heavy plate mill housing of Baosteel . which can provides effective theoretical basis to the optimization of technology establish and the safety of equipment. The simulation results can be used to verify the accuracy of stress and strain field measured data for the mill frame, It also can infer parts of rolling mill which is not detected and unpredictable of the stress and strain states, and further to learn about weak parts of frame in stiffness and strength facets.

Analysis of ultra-heavy plate rolling force based on thickness temperature gradient elements and experiment simulations

2016 ◽  
Vol 231 (4) ◽  
pp. 599-615 ◽  
Author(s):  
HY Wang ◽  
JG Ding ◽  
X Lu ◽  
DH Zhang ◽  
DW Zhao
Keyword(s):  
Temperature Gradient ◽  
Analytical Method ◽  
Rolling Force ◽  
Thickness Ratio ◽  
Slab Method ◽  
Heavy Plate ◽  
Plate Rolling ◽  
Different Temperatures

The thickness of the plate in temperature gradient rolling is first divided into 2  m elements, and m is an undetermined parameter which can be limited. Based on these thickness elements with different temperatures, the rolling force of this advanced process is first analyzed with slab method. Also the predictions of thickness ratio with different temperatures and reductions of each thickness elements are proposed in this paper. The results measured after rolling experiments are used to compare with these calculated by this model in order to verify its accuracy. In the experiment, a multi-metals riveting plate in the same temperature is designed to simulate a single metal one in gradient temperatures based on the thickness elements. Since the model is based on an analytical method which is strongly supported by the rolling theories, it can be applied in real gradient temperature rolling for ultra-heavy plate.

Reasons for the formation of crack-like defects in 09Г2С heavy plate steel for tank steel structures

2020 ◽  
Vol 10 (5) ◽  
pp. 479-489
Author(s):  
Vitaly М. Goritsky ◽  
◽  
Georgy R. Shneyderov ◽  
Eugeny P. Studenov ◽  
Olga A. Zadubrovskaya ◽  
...  
Keyword(s):  
Impact Toughness ◽  
Defect Formation ◽  
Steel Structures ◽  
Controlled Rolling ◽  
Plate Steel ◽  
Heavy Plate ◽  
Oil Storage ◽  
Magnetic Inspection ◽  
Metal Microstructure

Determination of causes of crack-like defects in the heavy plate steel 09Г2С is a crucial task, the solution of which is aimed at improving the mechanical safety of oil storage steel vertical tanks. In order to determine the causes for the formation of a group of crack-like defects oriented towards rolling, revealed during grinding and magnetic inspection of the tank wall surface near the vertical weld, the analysis of the chemical composition and testing of the mechanical properties of heavy plate steel were carried out, including the determination of the anisotropy of impact toughness in the temperature range from +20 to –75 °С, analysis of metal microstructure in the area of defect formation on transversal sections and rolled surface. Impact bending tests of 09Г2С heavy plate steel after controlled rolling in longitudinal and transverse directions showed no anisotropy of impact toughness, as well as high purity of steel as for sulfur and titanium, which at higher content causes impact toughness anisotropy. The revealed features of metal microstructure near the defects made it possible to conclude that the crack-like defects were formed during the rolling of gas bubbles at the stage of preparing semi-finished rolled products for finishing rolling. One of the possible methods to prevent such defects from getting into finished rolled products is the use of automated systems of visual inspection of rolled products in the manufacturing process.

XABO 890

Alloy Digest ◽  
2017 ◽  
Vol 66 (5) ◽  
Keyword(s):  
Fracture Toughness ◽  
Yield Strength ◽  
Structural Steel ◽  
Tensile Properties ◽  
Heat Treating ◽  
Heavy Plate ◽  
Minimum Yield

Abstract XABO 890 (minimum yield strength of 890 MPa, or 129 ksi, for thicknesses up to 50 mm, or 2.0 in.) is a quenched and tempered structural steel used for heavy plate products in thicknesses up to 100 mm (3.9 in.) This datasheet provides information on composition, microstructureand tensile properties as well as fracture toughness. It also includes information on forming, heat treating, and joining. Filing Code: SA-784. Producer or source: ThyssenKrupp Steel Europe AG.

XAR 500 Premium

Alloy Digest ◽  
2018 ◽  
Vol 67 (4) ◽  
Keyword(s):  
Structural Steel ◽  
Tensile Properties ◽  
Room Temperature ◽  
Heat Treating ◽  
Wear Resistant ◽  
Heavy Plate

Abstract XAR 500 Premium is a special wear-resistant structural steel. It is delivered as heavy plate 3–100 mm (0.118–3.937 in.) in the quenched or quenched and tempered condition with room temperature hardness between 470 and 530 HBW. The Premium grade contains 1.5 wt% nickel. This datasheet provides information on composition and tensile properties. It also includes information on heat treating and joining. Filing Code: SA-814. Producer or source: ThyssenKrupp Steel Europe AG.

TBL

Alloy Digest ◽  
2018 ◽  
Vol 67 (1) ◽  
Keyword(s):  
Structural Steel ◽  
Tensile Properties ◽  
Heat Treating ◽  
Wear Resistant ◽  
Fine Grained ◽  
Heavy Plate

Abstract TBL is a wear-resistant special structural steel with boron as heavy plate that is normalized with thicknesses up to 100 mm (3.9 in.) made of fine-grained structural steel TBL. This datasheet provides information on composition and tensile properties. It also includes information on forming and heat treating. Filing Code: SA-808. Producer or source: ThyssenKrupp Steel Europe AG.

XAR 400

Alloy Digest ◽  
2014 ◽  
Vol 63 (7) ◽  
Keyword(s):  
Fracture Toughness ◽  
Wear Resistance ◽  
Structural Steel ◽  
Tensile Properties ◽  
Heat Treating ◽  
Rolled Plate ◽  
Wear Resistant ◽  
Heavy Plate ◽  
Key Factor

Abstract XAR 400 (No. 1.8714) is a wear-resistant structural steel as heavy plate that is normalized or normalized rolled plate. XAR (extra abrasion resistant) steels are solutions for applications where wear is a key factor. This datasheet provides information on composition, hardness, and tensile properties as well as fracture toughness. It also includes information on wear resistance as well as forming, heat treating, machining, and joining. Filing Code: SA-704. Producer or source: ThyssenKrupp Steel Europe AG.

XAR 300

Alloy Digest ◽  
2014 ◽  
Vol 63 (4) ◽  
Keyword(s):  
Structural Steel ◽  
Heat Treating ◽  
Rolled Plate ◽  
Wear Resistant ◽  
Heavy Plate

Abstract XAR 300 (No. 1.8704) is a wear-resistant structural steel as heavy plate that is normalized or normalized rolled plate. This datasheet provides information on composition and hardness. It also includes information on forming, heat treating, machining, and joining. Filing Code: SA-699. Producer or source: ThyssenKrupp Steel Europe AG.

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