SU576533A1 - Method of monitoring chemical-heat treatment processes, particularly nitration - Google Patents
Method of monitoring chemical-heat treatment processes, particularly nitrationInfo
- Publication number
- SU576533A1 SU576533A1 SU7602343493A SU2343493A SU576533A1 SU 576533 A1 SU576533 A1 SU 576533A1 SU 7602343493 A SU7602343493 A SU 7602343493A SU 2343493 A SU2343493 A SU 2343493A SU 576533 A1 SU576533 A1 SU 576533A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- heat treatment
- nitration
- treatment processes
- monitoring chemical
- load current
- Prior art date
Links
Landscapes
- Analysing Materials By The Use Of Radiation (AREA)
Description
1one
Изобретение относитс к области химикотермической обработки металлов и сплавов, в частности к способам контрол качества диффузионных слоев и скорости их формировани .The invention relates to the field of chemical-heat treatment of metals and alloys, in particular, to methods for controlling the quality of diffusion layers and the speed of their formation.
Известен способ контрол фазового состава поверхности при химико-термической обработке , заключающийс в рентгеноструктурном контроле поверхности непосредственно при термической обработке 1.The known method of controlling the phase composition of the surface during chemical heat treatment, which consists in the X-ray structural testing of the surface directly during heat treatment 1.
Недостатком способа вл етс ограниченность получаемой информации и невозможность контрол глубины диффузионного сло .The disadvantage of this method is the limited information received and the inability to control the depth of the diffusion layer.
Известен также способ контрол процессов химико-термической обработки, например, азотировани , заключающийс в измерении напр жепи , пропорционального амплитуде тока нагрузки.There is also known a method for controlling the processes of chemical heat treatment, for example, nitriding, which consists in measuring a voltage proportional to the amplitude of the load current.
Недостаток этого способа состоит в низкой чувствительности измерени , позвол ющей контролировать ограниченный класс материалов .The disadvantage of this method is the low sensitivity of the measurement, allowing control of a limited class of materials.
Дл повышени точности, по предлагаемому способу измер ют разностный сигнал между напр жением, пропорциональным частоте и амплитуде тока нагрузки.To improve accuracy, the proposed method measures the difference signal between a voltage proportional to the frequency and amplitude of the load current.
Изменение структуры и химического состача образца в процессе химико-термической обработки вызываег изменение электрических параметров датчика, что в свою очередь мен ет частоту и амплитуду тока нагрузки измерительного генератора. Частота и амплитуда тока нагрузки завис т от структуры и химического состава как сердцевины, так и поверхности образца. Р1зменение структуры и состава поверхностого сло в большей степени вли ют на изменение частоты тока нагрузки, а изменение структуры сердцевины вли ет в одинаковой степени на изменение как амплитуды,The change in the structure and chemical composition of the sample during the process of chemical heat treatment leads to a change in the electrical parameters of the sensor, which in turn changes the frequency and amplitude of the load current of the measuring generator. The frequency and amplitude of the load current depends on the structure and chemical composition of both the core and the sample surface. Changing the structure and composition of the surface layer to a greater extent influences the change in the frequency of the load current, and the change in the structure of the core affects the change in both the amplitude and
так и частоты тока нагрузки. Таким образом, измерение разностного сигнала между напр жением , пропорциональным амплитуде тока нагрузки, и напр жением, пропорциональным частоте тока нагрузки будет зависеть толькоand load current frequency. Thus, measuring the difference signal between a voltage proportional to the amplitude of the load current and a voltage proportional to the frequency of the load current will only depend
от изменени фазового состава и строени поверхностного сло анализируемого образца.from changes in the phase composition and structure of the surface layer of the analyzed sample.
На черт, показано предлагаемое устройство , которое состоит из датчика 1, измерительного генератора 2, эталонного генератора 3, смесител 4, усилител 5, частотомера 6, индикатора 7, образца 8, герметичного муфел 9.The devil shows the proposed device, which consists of a sensor 1, a measuring generator 2, a reference generator 3, a mixer 4, an amplifier 5, a frequency meter 6, an indicator 7, a sample 8, a sealed muffle 9.
Устройство работает следующим образом. Обезжиренный образец полмещаетс в индуктивный проходной датчик, который прикреплен к крышке герметичного муфел и находитс в зоне рабочей печи.The device works as follows. The defatted sample is placed in an inductive pass-through sensor, which is attached to the lid of the sealed muffle and is located in the zone of the working furnace.
В процессе химико-термической обработки измен етс структура диффузного (азотироIn the process of chemical heat treatment, the structure of the diffuse (nitrogenous
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU7602343493A SU576533A1 (en) | 1976-03-23 | 1976-03-23 | Method of monitoring chemical-heat treatment processes, particularly nitration |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU7602343493A SU576533A1 (en) | 1976-03-23 | 1976-03-23 | Method of monitoring chemical-heat treatment processes, particularly nitration |
Publications (1)
Publication Number | Publication Date |
---|---|
SU576533A1 true SU576533A1 (en) | 1977-10-15 |
Family
ID=20655465
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU7602343493A SU576533A1 (en) | 1976-03-23 | 1976-03-23 | Method of monitoring chemical-heat treatment processes, particularly nitration |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU576533A1 (en) |
-
1976
- 1976-03-23 SU SU7602343493A patent/SU576533A1/en active
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