SU834455A1 - Method of indirect evaluation of pearlite and ferrite class steel relative workability - Google Patents

Method of indirect evaluation of pearlite and ferrite class steel relative workability Download PDF

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Publication number
SU834455A1
SU834455A1 SU792757859A SU2757859A SU834455A1 SU 834455 A1 SU834455 A1 SU 834455A1 SU 792757859 A SU792757859 A SU 792757859A SU 2757859 A SU2757859 A SU 2757859A SU 834455 A1 SU834455 A1 SU 834455A1
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SU
USSR - Soviet Union
Prior art keywords
microhardness
relative
sample
ferritic
chips
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SU792757859A
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Russian (ru)
Inventor
Николай Васильевич Талантов
Иван Тимофеевич Панин
Геннадий Аркадьевич Воеводин
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Волгоградский Политехническийинститут
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Priority to SU792757859A priority Critical patent/SU834455A1/en
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Publication of SU834455A1 publication Critical patent/SU834455A1/en

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(54) СПОСОБ КОСВЕННОГО ОПРЕДЕЛЕНИЯ ОТНОСИТЕЛЬНОЙ(54) METHOD FOR INDIRECT DETERMINATION OF RELATIVE

ОБРАБАТЫВАЕМОСТИ СТАЛЕЙ ПЕРЛИТНОГОHANDLING OF STEELS OF PEARLITE

Claims (1)

И ФЕРРИТНОГО КЛАССОВ кость инструмента. За критерий износа инструмента принимаетс  фаска по задней грани инструмента, равна  0,4 мм, полученна  при продйльном точении на режиме: скорость резани  V 90 м/мин, глубина ре ани  t 2 мм без охлаждени . Предлагаемый способ позвол ет оценить обрабатываемость не только различных марок сталей, но и одной марки стали, различно термообработанной. Формула изобретени  Способ косвенного определени  относительной обрабатываемости сталей перлитного и ферритного классов, заключающийс  в том, что вы вл ют микроструктуру испытуемого материала образца, измер ют микротвердость структурных составл ющих, отличающийс  тем, что, с целью повыщени  достоверности результатов, обрабатывают образец резанием, измер ют микротвердость структурных составл ющих сливной стружки , определ ют коэффициент относительного упрочнени  дл  каждой структурной составл ющей .по формулам ц К Кф- нф где дл  .перлитной составл ющей коэффициент относительного упрочнени ; Н - микротвердость стружки; микротвердость образца; дл  ферритной составл ющей К«р - коэффициент относительного упрочнени ; H«- микротвердость стружки; микротвердость образца; и по разности коэффициентов () суд т об относительной обрабатываемости. Источники информации, прин тые во внимание при экспертизе 1. Авторское свидетельство СССР № 518688, кл. G 01 N 3/58, 1974 (прототип ).And ferritic bone tool. The criterion of tool wear is taken to be the chamfer on the rear face of the tool, equal to 0.4 mm, obtained by turning in the following mode: cutting speed V 90 m / min, real depth t 2 mm without cooling. The proposed method makes it possible to assess the machinability not only of various steel grades, but also of one steel grade, variously heat-treated. The method of indirectly determining the relative workability of steels of pearlite and ferritic classes, which consists in revealing the microstructure of the sample material under test, measuring the microhardness of structural components, characterized in that, in order to improve the reliability of the results, the sample is cut by cutting, measured microhardness of the structural components of the drain chips, the coefficient of relative hardening for each structural component is determined by the formulas K K Kfnf where for the perlite component of the coefficient of relative hardening; H - microhardness of chips; sample microhardness; for the ferritic component, K «p is the relative strength factor; H "- microhardness chips; sample microhardness; and by the difference of the coefficients (), judging relative machinability. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 518688, cl. G 01 N 3/58, 1974 (prototype).
SU792757859A 1979-04-24 1979-04-24 Method of indirect evaluation of pearlite and ferrite class steel relative workability SU834455A1 (en)

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SU792757859A SU834455A1 (en) 1979-04-24 1979-04-24 Method of indirect evaluation of pearlite and ferrite class steel relative workability

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SU792757859A SU834455A1 (en) 1979-04-24 1979-04-24 Method of indirect evaluation of pearlite and ferrite class steel relative workability

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2568887C1 (en) * 2014-12-03 2015-11-20 Федеральное государственное автономное образовательное учреждение высшего профессионального образования "Казанский (Приволжский) Федеральный Университет" (ФГАОУ ВПО КФУ) Method to determine steel fitness for cold plastic deformation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2568887C1 (en) * 2014-12-03 2015-11-20 Федеральное государственное автономное образовательное учреждение высшего профессионального образования "Казанский (Приволжский) Федеральный Университет" (ФГАОУ ВПО КФУ) Method to determine steel fitness for cold plastic deformation

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