SU136951A1 - Method and apparatus for testing punctuality of alloys - Google Patents

Method and apparatus for testing punctuality of alloys

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Publication number
SU136951A1
SU136951A1 SU673378A SU673378A SU136951A1 SU 136951 A1 SU136951 A1 SU 136951A1 SU 673378 A SU673378 A SU 673378A SU 673378 A SU673378 A SU 673378A SU 136951 A1 SU136951 A1 SU 136951A1
Authority
SU
USSR - Soviet Union
Prior art keywords
alloys
sample
testing
punctuality
cooled
Prior art date
Application number
SU673378A
Other languages
Russian (ru)
Inventor
Е.К. Ковшиков
Ф.Н. Тавадзе
Original Assignee
Е.К. Ковшиков
Ф.Н. Тавадзе
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 Е.К. Ковшиков, Ф.Н. Тавадзе filed Critical Е.К. Ковшиков
Priority to SU673378A priority Critical patent/SU136951A1/en
Application granted granted Critical
Publication of SU136951A1 publication Critical patent/SU136951A1/en

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Description

Известны способы и устройства дл  испытани  сплавов на прокаливаемость путем торцовой закалки образцов.Methods and devices for testing alloys for hardenability by face hardening of samples are known.

Предлагаемый способ в отличие от известных позвол ет определ ть прокаливаемость сплавов при охлаждении их не только в воде, масле и на воздухе, но также и в гор чих средах при изотермической закалке.The proposed method, in contrast to the known ones, makes it possible to determine the hardenability of alloys when they are cooled not only in water, oil and air, but also in hot media during isothermal quenching.

Особенность способа состоит в том, что один конец образца, нагретого до температуры закалки, подвергают охлаждению с торца струей воды, масла или расплавленной селитры. Охлаждение противоположного конца образца производ т на воздухе или в трубчатой печи, оборудованной прибором с программной регулировкой температуры.The peculiarity of the method is that one end of the sample heated to the quenching temperature is cooled from the end by a stream of water, oil or molten saltpeter. The opposite end of the sample is cooled in air or in a tube furnace equipped with a device with programmed temperature control.

На чертеже изображено устройство дл  осуществлени  описываемого способа.The drawing shows a device for carrying out the described method.

Оно состоит из станины /, на которой установлены трубчата  печь 2 и электродвигатель 3, привод щий в действие помп.у 4. Стру  расплавленной селитры из ванны 5 с помощью помиы 4 через сопло 6 направл етс  на торец испытуемого образца 7, установленного в трубчатой печи 2. Помпа снабжена краном 8 дл  пуска охлаждающей жидкости.It consists of a frame / on which a tubular furnace 2 and an electric motor 3 are installed, which actuates the pump 4. The jet of molten nitrate from the bath 5 is using help 4 through the nozzle 6 directed to the end of the test sample 7 installed in the tube furnace 2. The pump is equipped with a valve 8 for starting the coolant.

При испытании сплавов на прокаливаемость образец 7, нагретый до закалочной температуры, помещаетс  в трубчатую печь 2, имеющую такую же температуру, что и образец 7. Затем включаетс  помпа 4 и нижний торец образца интенсивно охлаждаетс  струей расплавленной селитры. В процессе испытани  производитс  медленное понижение температуры в печи с помощью прибора, обеспечивающего охлаждение ее с заданной скоростью, но не ниже 3-4 в минуту при 700°. Таким образом, нижний конец образца 7 охлаждаетс  с больщой скоростью , соответствующей резкой закалке, а верхний конец образца - с незначительной скоростью, соответствующей отжигу. Благодар  этому на всей длине образца 7 скорость охлаждени  измен етс  в щироWhen testing alloys for hardenability, sample 7 heated to quenching temperature is placed in a tube furnace 2 having the same temperature as sample 7. Then pump 4 is turned on and the lower end of the sample is intensively cooled by a stream of molten saltpeter. During the test, the furnace temperature is lowered slowly with an instrument that provides cooling at a given speed, but not lower than 3-4 per minute at 700 °. Thus, the lower end of sample 7 is cooled at a high rate corresponding to sharp quenching, and the upper end of the sample is cooled at a low rate corresponding to annealing. Due to this, throughout the entire length of the sample 7, the cooling rate is changed in a wide range.

SU673378A 1960-07-13 1960-07-13 Method and apparatus for testing punctuality of alloys SU136951A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU673378A SU136951A1 (en) 1960-07-13 1960-07-13 Method and apparatus for testing punctuality of alloys

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU673378A SU136951A1 (en) 1960-07-13 1960-07-13 Method and apparatus for testing punctuality of alloys

Publications (1)

Publication Number Publication Date
SU136951A1 true SU136951A1 (en) 1960-11-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
SU673378A SU136951A1 (en) 1960-07-13 1960-07-13 Method and apparatus for testing punctuality of alloys

Country Status (1)

Country Link
SU (1) SU136951A1 (en)

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