SU77291A1 - Heat treatment method of chromium steel for magnets - Google Patents

Heat treatment method of chromium steel for magnets

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Publication number
SU77291A1
SU77291A1 SU25734A SU25734A SU77291A1 SU 77291 A1 SU77291 A1 SU 77291A1 SU 25734 A SU25734 A SU 25734A SU 25734 A SU25734 A SU 25734A SU 77291 A1 SU77291 A1 SU 77291A1
Authority
SU
USSR - Soviet Union
Prior art keywords
heat treatment
magnets
treatment method
chromium steel
product
Prior art date
Application number
SU25734A
Other languages
Russian (ru)
Inventor
Л.С. Алексеева
Н.Т. Гудцов
В.В. Половников
Original Assignee
Л.С. Алексеева
Н.Т. Гудцов
В.В. Половников
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Л.С. Алексеева, Н.Т. Гудцов, В.В. Половников filed Critical Л.С. Алексеева
Priority to SU25734A priority Critical patent/SU77291A1/en
Application granted granted Critical
Publication of SU77291A1 publication Critical patent/SU77291A1/en

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Description

При термообработке хром,истых магнитных сталей дл  получени  мартенситной структуры, обеспечивающей высокую коэрцитивную силу, требуетс  резка  закалка в воде, тогда как дл  предупреждени  по влени  трещин при высоком содержании хрома и углерода необходима закалка в масле.Heat treatment of chromium, raw magnetic steels in order to obtain a martensitic structure that provides a high coercive force requires cutting quenching in water, whereas quenching in oil is necessary to prevent the occurrence of cracks with a high content of chromium and carbon.

Согласно изобретению, дл  частичного (от 20 до 40%) превращени  аустенита в мартенсит нагретое изделие погружают в гор чую ва«ну, температура которой близка к нижнему пределу превращени  аустенита. Окончательное охлаждение издели  производитс  в воде.According to the invention, for a partial (from 20 to 40%) conversion of austenite to martensite, the heated product is immersed in hot water, the temperature of which is close to the lower limit of austenite transformation. The final cooling of the product is done in water.

При более значительном превращении аустенита в гор чей среде магнитные свойства в готовых магнитах понижаютс , при меньщем же превращении-получаютс  трещины. Дл  изотермической выдержки стали, содержащей 3% хрома, примен етс  масл на  ванна при 100°, в которой издели  выдерживаютс  40-60 сек.With a more significant transformation of austenite in a hot medium, the magnetic properties in the finished magnets decrease, and with a smaller transformation, cracks are obtained. For isothermal holding of steel containing 3% chromium, oil is applied per bath at 100 °, in which the products are kept for 40-60 seconds.

Предмет изобретени Subject invention

Claims (2)

1.Способ термической обработки хромистой стали дл  магнитов, отличающийс  тем, что, с целью повьшени  магнитных свойств нагретое до температуры закалки изделие погружают в гор чую ванну с температурой, лежащей у точки мартенситного превращени  и выдерживают изделие изотермически до превращени  в нем 20-40% аустенита с последующим окончательным охлаждением в воде.1. A heat treatment method for chromium steel for magnets, characterized in that, in order to increase the magnetic properties, the product heated to the quenching temperature is immersed in a hot bath with a temperature lying at the martensitic transformation point and the product is held isothermally to turn it into 20-40% austenite followed by final cooling in water. 2.Прием выполнени  способа по п. 1, применительно к стали, содержащей 3Vo хрома, отличающийс  тем, что гор ча  ванна дл  изотермической выдержки издели  имеет температуру 100°.2. A method according to claim 1, for steel containing 3Vo chromium, characterized in that the hot water for isothermal holding of the product has a temperature of 100 °.
SU25734A 1939-07-27 1939-07-27 Heat treatment method of chromium steel for magnets SU77291A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU25734A SU77291A1 (en) 1939-07-27 1939-07-27 Heat treatment method of chromium steel for magnets

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU25734A SU77291A1 (en) 1939-07-27 1939-07-27 Heat treatment method of chromium steel for magnets

Publications (1)

Publication Number Publication Date
SU77291A1 true SU77291A1 (en) 1948-11-30

Family

ID=48251927

Family Applications (1)

Application Number Title Priority Date Filing Date
SU25734A SU77291A1 (en) 1939-07-27 1939-07-27 Heat treatment method of chromium steel for magnets

Country Status (1)

Country Link
SU (1) SU77291A1 (en)

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