Form-filling in forging and section-rolling

Thermo-mechanical controlled rolling (TMCR) schedules have been studied on the wire line of 400/200 section rolling mill to manufacture 6.0 – mm - diameter reinforcing wire in coils by V-alloyed C – Mn – Si - steel that has dual-phase (DP - ferrite-martensite (bainite)) and multi-phase (MP - ferrite-martensite (bainite) - pearlite) microstructures.It has been established that high tensile strength and plasticity values were achieved in this 6.0 – mm wire in coils (YS0.2= 530-550 MPa; TS= 785 – 885 MPa; El5 = 15.0 – 29.0 %) which were in full compliance with national standard specifications such as ASТM A 615 (USA), JIS G 3112 (Japan) and KSD 3504 (the Republic of Korea)), when the TMCR schedules involving laying head temperatures ТLH from 1024 ºС to 1063 ºС were employed ensuring formation of MP microstructure.

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Determination of Contact Pressure during Double-T Section Rolling in Universal Beam Groove

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.299.546 ◽

2020 ◽

Vol 299 ◽

pp. 546-551

Author(s):

Danil L. Shvarts ◽

Sergey O. Nepriakhin

Keyword(s):

Equations Of State ◽

Rolling Force ◽

Theoretical Method ◽

Stress And Strain ◽

Calculation Error ◽

State Of Stress ◽

H Beam ◽

Section Rolling ◽

Contact Pressures

Based on application the physical constraint equations of state of stress and strain of the metal for the isotropic medium, we get expressions for components of stress tensor. The new theoretical method for calculation of contact pressures and rolling force during rolling of double-T section in a universal beam groove was developed. Reliability of the method is confirmed by the results of experimental verification for conditions of rolling of H-beam No 35B1, 40K2 and 45B2 from steel 15CrSiNiCu on the universal beam mill of "NTMK". The average calculation error is 6.4%. The new method is recommended for calculation pass design and technological modes of H-beam rolling on rail-beam and section mills, equipped with universal stands.

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Texture evolution in an electrodeposited nanocrystalline Ni–Fe alloy during growth-plane rolling and cross-section rolling

Scripta Materialia ◽

10.1016/j.scriptamat.2012.06.012 ◽

2012 ◽

Vol 67 (5) ◽

pp. 483-486 ◽

Cited By ~ 8

Author(s):

Y.L. Yang ◽

J.G. Chen ◽

D.P. Lu ◽

K.M. Liu ◽

J. Zou ◽

...

Keyword(s):

Cross Section ◽

Texture Evolution ◽

Growth Plane ◽

Section Rolling

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Modeling and Research of the Deformation Treatment Process of 585 Gold Fineness Alloys for Obtaining Wire for Jewelry Purpose

10.21203/rs.3.rs-691361/v1 ◽

2021 ◽

Author(s):

Sergey Borisovich Sidelnikov ◽

Yuliia Dmitrievna Ditkovskaia ◽

Ekaterina Sergeevna Lopatina ◽

Denis Sergeevich Voroshilov ◽

Olga Sergeevna Lebedeva ◽

...

Keyword(s):

Mechanical Properties ◽

Treatment Process ◽

Experimental Studies ◽

Total Power ◽

Variation Method ◽

Section Rolling ◽

Deformation Treatment ◽

Palladium Silver

Abstract The results of studies of the process of obtaining wire for the manufacture of jewelry chains from new nickel-free 585 gold fineness alloys are presented.New 585 gold fineness alloys, alloyed with palladium, silver and other elements, and as modifiers - with rhodium and ruthenium in the stated quantities have been proposed.By modeling the process of section rolling of rods in octagonal calibers using the variation method of minimum total power, the broadening of the metal and the energy-power parameters of rolling rods from the investigated alloys have been determined. The regularities of their change have been found. Software has been developed for designing processes for the production of longish deformed semi-finished products and technological modes of rolling and drawing of new gold alloys.With the help of experimental studies, the adequacy of the results of calculations and modeling was checked and new data were obtained on the mechanical properties of the metal and its structure.It has been found that the proposed alloys and the modes of their processing using the processes of section rolling and drawing make it possible in industrial conditions to obtain jewelry wire with a diameter of up to 0.25 mm with the level of mechanical and operational properties required for chain tying.

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Questions of the area of information technologies budgeting in metallurgical branch on the example of production of section rolling products

Russian Internet Journal of Industrial Engineering ◽

10.24892/rijie/20150209 ◽

2015 ◽

Vol 3 (2) ◽

pp. 65-67

Keyword(s):

Information Technologies ◽

Section Rolling

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Added Moment of Inertia of Rolling Ship Sections

Journal of Ship Research ◽

10.5957/jsr.1982.26.2.89 ◽

1982 ◽

Vol 26 (02) ◽

pp. 89-93

Author(s):

P. P. Hsu ◽

L. Landweber

Keyword(s):

Free Surface ◽

Infinite Series ◽

Laurent Series ◽

Low Frequency ◽

Moment Of Inertia ◽

Section Area ◽

Family Of Curves ◽

Section Rolling ◽

The Given ◽

Two Parameter

An expression for the added moment of inertia of a ship section rolling at low frequency at a free surface, in terms of the coefficients of the Laurent series of the function which maps the given section into a circle, has been derived. The method is applied to the two-parameter family of Lewis forms and the results are presented as a family of curves which gives the coefficient of the added moment of inertia as a function of the thickness ratio and the section-area coefficient of a form. A second application is to a square section, for which the Laurent expansion is an infinite series.

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Estimation of the resource of sliding bearings of roll reinforcement in section rolling mills

10.36652/0042-4633-2021-8-43-46 ◽

2021 ◽

pp. 43-46

Author(s):

Keyword(s):

Hot Rolling ◽

Rolling Mill ◽

Design Parameters ◽

Wear Model ◽

Section Mill ◽

Sliding Bearings ◽

Rolling Mills ◽

Bearing Unit ◽

Rolling Roll ◽

Section Rolling

A new bearing unit is developed for the input roll reinforcement of the stands of 170 ПАО MMK section mill. A model of wear of sliding bearings is considered, which establishes the influence of the design parameters of the bearing, the frictional characteristics of materials and the conditions of surface treatment on the resource, friction force and contour pressure. Keywords: section rolling mill, hot rolling, roll reinforcement, sliding bearings, wear model, resource. [email protected]

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