RU2000128545A - METHOD OF MODIFICATION OF THE CAST METAL STRUCTURE - Google Patents

METHOD OF MODIFICATION OF THE CAST METAL STRUCTURE

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Publication number
RU2000128545A
RU2000128545A RU2000128545/02A RU2000128545A RU2000128545A RU 2000128545 A RU2000128545 A RU 2000128545A RU 2000128545/02 A RU2000128545/02 A RU 2000128545/02A RU 2000128545 A RU2000128545 A RU 2000128545A RU 2000128545 A RU2000128545 A RU 2000128545A
Authority
RU
Russia
Prior art keywords
electric current
casting
cast metal
modification
metal structure
Prior art date
Application number
RU2000128545/02A
Other languages
Russian (ru)
Other versions
RU2198067C2 (en
Inventor
Борис Николаевич Хворов
Юрий Николаевич Секисов
Сергей Борисович Чернавин
Виктор Андреевич Спирин
Виктор Аркадьевич Ровнушкин
Original Assignee
АОЗТ "Научно-техническая фирма Институт прикладной металлургии"
Filing date
Publication date
Application filed by АОЗТ "Научно-техническая фирма Институт прикладной металлургии" filed Critical АОЗТ "Научно-техническая фирма Институт прикладной металлургии"
Priority to RU2000128545A priority Critical patent/RU2198067C2/en
Priority claimed from RU2000128545A external-priority patent/RU2198067C2/en
Publication of RU2000128545A publication Critical patent/RU2000128545A/en
Application granted granted Critical
Publication of RU2198067C2 publication Critical patent/RU2198067C2/en

Links

Claims (2)

1. Способ модифицирования структуры литого металла пропусканием переменного электрического тока через затвердевающую отливку, отличающийся тем, что, с целью регулирования размеров зерна в отливке или отдельных ее частях, а также снижения локальной химической неоднородности сплава используется переменный электрический ток синусоидальной или импульсной формы с частотой выше 5,0 кГц и амплитудным значением от 1•103 до 1•105 А/м2.1. A method of modifying the structure of a cast metal by passing an alternating electric current through a hardened casting, characterized in that, in order to control the grain size in the casting or its individual parts, as well as to reduce the local chemical inhomogeneity of the alloy, an alternating electric current of a sinusoidal or pulsed form with a frequency above 5.0 kHz and an amplitude value from 1 • 10 3 to 1 • 10 5 A / m 2 . 2. Способ по п. 1, отличающийся тем, что для формирования заданного распределения размеров зерна по сечению отливки используется электрический ток любой формы с заданным законом изменения частоты, пересекающий границу раздела твердое - жидкое в направлении, близком к нормали. 2. The method according to p. 1, characterized in that for the formation of a given distribution of grain sizes over the cross section of the casting, an electric current of any shape with a given frequency change law is used that crosses the solid-liquid interface in a direction close to the normal.
RU2000128545A 2000-11-14 2000-11-14 Method for modifying structure of cast metal RU2198067C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
RU2000128545A RU2198067C2 (en) 2000-11-14 2000-11-14 Method for modifying structure of cast metal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU2000128545A RU2198067C2 (en) 2000-11-14 2000-11-14 Method for modifying structure of cast metal

Publications (2)

Publication Number Publication Date
RU2000128545A true RU2000128545A (en) 2002-11-10
RU2198067C2 RU2198067C2 (en) 2003-02-10

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
RU2000128545A RU2198067C2 (en) 2000-11-14 2000-11-14 Method for modifying structure of cast metal

Country Status (1)

Country Link
RU (1) RU2198067C2 (en)

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