SU1532595A1 - Method of monitoring the quality of heat treatment of articles of tool steels - Google Patents
Method of monitoring the quality of heat treatment of articles of tool steels Download PDFInfo
- Publication number
- SU1532595A1 SU1532595A1 SU874234184A SU4234184A SU1532595A1 SU 1532595 A1 SU1532595 A1 SU 1532595A1 SU 874234184 A SU874234184 A SU 874234184A SU 4234184 A SU4234184 A SU 4234184A SU 1532595 A1 SU1532595 A1 SU 1532595A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- heat treatment
- quality
- quenching
- tempering
- control
- Prior art date
Links
Landscapes
- Investigating And Analyzing Materials By Characteristic Methods (AREA)
Abstract
Изобретение относитс к области металлургии и может быть использовано при контроле качества термической обработки изделий из инструментальных сталей. Целью изобретени вл етс повышение достоверности контрол . Одновременно измер ют два независимых магнитных параметра - намагниченность насыщени и коэрцитивную силу. Измерение выполн ют дважды: после закалки инструментальной стали и после ее отпуска. Полученные значени параметров рассматривают совместно через критерий структурно-фазового состо ни , по величине которого оценивают качество термической обработки с учетом ожидаемых механических свойств. 1 ил., 2 табл.This invention relates to the field of metallurgy and can be used to control the quality of heat treatment of tool steel products. The aim of the invention is to increase the reliability of the control. At the same time, two independent magnetic parameters are measured - saturation magnetization and coercive force. The measurement is performed twice: after quenching tool steel and after its tempering. The obtained values of the parameters are considered together through the criterion of the structure-phase state, the magnitude of which is used to evaluate the quality of heat treatment, taking into account the expected mechanical properties. 1 dw., 2 tab.
Description
Изобретение относитс к металлургии и может быть использовано при контроле качества термической обработки изделий из инструментальных сталей .The invention relates to metallurgy and can be used to control the quality of heat treatment of tool steel products.
Целью изобретени вл етс повышение достоверности контрол .The aim of the invention is to increase the reliability of the control.
Термообрабатывают эталонные образцы из инструментальной стали путем проведени закалки и последующего отпуска. При этом измер ют намагниченности насыщени и коэрцитивной силы Hf. после операций закалки и отпуска . На базе полученных данных определ ют коэффициент структурно- фазового состо ни при различных вариантах термообработки по формулеThermoprocessing reference samples of tool steel by quenching and subsequent tempering. The saturation magnetizations and the coercive force Hf are measured. after hardening and tempering operations. On the basis of the obtained data, the coefficient of the structure-phase state is determined for different variants of heat treatment using the formula
т н V - .t n v -.
i; . н1 i; . n1
гдеWhere
ILIL
иand
нn
и Нand H
намагниченность насыщени после закалки и после отпуска, соответственно ;saturation magnetization after quenching and after tempering, respectively;
коэрцитивна сила после закалки и после отпуска соответственно .coercive force after quenching and after tempering, respectively.
Затем стро т диаграмму зависимости (см. чертеж) механических свойств, определ ющих качество стали и измеренных на эталонных образцах после каждого из вариантов термообработки от коэффициента К. Полученна диаграмма вл етс основой дл определени качества термической обработки изделий из инструментальных сталей. Свойства стали Р6АМ5ФЗ после закалки и отпуска 560 С-Зр-1ч приведены в табл. 1.Then, a diagram of dependence (see the drawing) of mechanical properties determining the quality of steel and measured on reference samples after each of the heat treatment options on the coefficient K is obtained. The resulting diagram is the basis for determining the quality of heat treatment of tool steel products. Properties of steel Р6АМ5ФЗ after quenching and tempering 560 С-Зр-1ч are given in table. one.
слcl
0000
юYu
слcl
;о;about
СПSP
Свойства стали Р9М4К8 после закал- ки( и отпуска 560°С Зр 1ч приведены в |та6л. 2,The properties of steel Р9М4К8 after quenching (and tempering 560 ° С Зр 1ч are given in | Ta6l. 2,
I Применение способа позвол ет однозначно определить свойства тёрмо- оцработанной инструментальной стали,I The application of the method allows to unambiguously determine the properties of the hardened tool steel,
то врем как известный способ, ос|нованньй на независимом измеренииWhile the known method, based on an independent measurement
II
и Hj., не дает такой высокой дос- Qand Hj., does not give such a high dos Q
тс1верности вследствие того, что.рав- ньм значени м магнитных параметров могут соответствовать отличные по зна- че|ни м механические свойства.TC1 accuracy due to the fact that equal mechanical properties can correspond to equal values of the magnetic parameters.
ФF
ормула изобретени formula of invention
1515
новленную на эталонной стали зависимость механических свойств и магнит- ных параметров, отличающи й- с тем, что, с целью повышени достоверности контрол , измерение магнитных параметров провод т дважды после закалки и после отпуска стали, а св зь механических и магнитных свойств устанавливают через критерий структурно-фазового состо ни К., определ емого по формулеThe dependence of mechanical properties and magnetic parameters on the reference steel, which differs with the fact that, in order to increase the reliability of the control, the measurement of magnetic parameters is carried out twice after quenching and after tempering the steel, and the connection of mechanical and magnetic properties is established through the criterion structural phase state K. defined by the formula
де I,de i,
КTO
иand
сфЧSFC
Н сN with
lili
т U t u
J-S сJ-S with
- намагниченность насыщени после закалки- saturation magnetization after quenching
q6 qe /p / /f //5 c0q6 qe / p / / f // 5 c0
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU874234184A SU1532595A1 (en) | 1987-04-22 | 1987-04-22 | Method of monitoring the quality of heat treatment of articles of tool steels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU874234184A SU1532595A1 (en) | 1987-04-22 | 1987-04-22 | Method of monitoring the quality of heat treatment of articles of tool steels |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU1532595A1 true SU1532595A1 (en) | 1989-12-30 |
Family
ID=21299985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU874234184A SU1532595A1 (en) | 1987-04-22 | 1987-04-22 | Method of monitoring the quality of heat treatment of articles of tool steels |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU1532595A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5405459A (en) * | 1992-10-16 | 1995-04-11 | Toyota Jidosha Kabushiki Kaisha | Production process for producing hollow steel tube of high strength |
| RU2692359C2 (en) * | 2014-04-29 | 2019-06-24 | Юропайп Гмбх | Method of material testing for steel pipes to be treated with heat, affecting mechanical properties |
-
1987
- 1987-04-22 SU SU874234184A patent/SU1532595A1/en active
Non-Patent Citations (1)
| Title |
|---|
| Авторское свидетельство СССР № 730837, кл. С 21 D 9/22, 1979. Авторское свидетельство СССР № 213077, кл. С 21 D 11/00, 1968. * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5405459A (en) * | 1992-10-16 | 1995-04-11 | Toyota Jidosha Kabushiki Kaisha | Production process for producing hollow steel tube of high strength |
| RU2692359C2 (en) * | 2014-04-29 | 2019-06-24 | Юропайп Гмбх | Method of material testing for steel pipes to be treated with heat, affecting mechanical properties |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0338083A4 (en) | Analyzer | |
| SU1532595A1 (en) | Method of monitoring the quality of heat treatment of articles of tool steels | |
| Grunbaum et al. | Microelectrophoresis on cellulose acetate membranes | |
| DE3779537D1 (en) | METHOD FOR DETERMINING THE SPECTRAL DISTRIBUTION OF CORE MAGNETIZATION IN A LIMITED VOLUME RANGE. | |
| Oschkinat et al. | A two-dimensional nuclear overhauser enhancement experiment using semiselective soft pulses, and its applications to proteins | |
| SU1714485A1 (en) | Method of determination of depth of strengthened layer in steel products | |
| SU1527562A1 (en) | Apparatus for nondestructive quality control of heat treatment of articles | |
| KR100534047B1 (en) | Method for Measuring Reduction Degree of Direct Reduction Iron Using Measured Magnetic Susceptibility | |
| SU868547A1 (en) | Method of checking the depth of hardening of alloyed steel specimen surface | |
| SU1559266A1 (en) | Method of determining crack development | |
| RU1798675C (en) | Method of determination of average size of particles of cementite in steels | |
| SU953541A1 (en) | Article thermal treatment quality control method | |
| SU1504586A1 (en) | Method of checking mechanical articles of ferromagnetic materials | |
| Ono et al. | On the amplitude distribution of burst emission due to MNS inclusions in HSLA steels | |
| SU1504572A1 (en) | Method of monitoring machinability of steels | |
| SU731324A1 (en) | Method of measuring stresses in steel structure elements | |
| SU1012338A1 (en) | Magnetic head checking method | |
| SU1330184A1 (en) | Method of heat treatment of precision parts made of stainless martensite-ageing steels | |
| Kern et al. | Process integrated nondestructive testing of laser-hardened components | |
| SU1320745A1 (en) | Method of determining concentration of admixtures in high-purity metals | |
| SU1644018A1 (en) | Method of nondestructive testing of mechanical properties of articles manufactured of carbon steel | |
| Markovets et al. | Determination of the elastic modulus of the first kind by the contact method(Young elastic modulus determination in steel and alloy disks by contact method) | |
| SU1205087A1 (en) | Method of determining static magnetic characteristics of ferrospecimen and apparatus for accomplishment of same | |
| JPS56153746A (en) | Measuring method for transient response characteristic | |
| RU1727486C (en) | Method for checking structure of lengthy ferromagnetic products |