SU136951A1 - Method and apparatus for testing punctuality of alloys - Google Patents
Method and apparatus for testing punctuality of alloysInfo
- 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
Links
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.
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 |
Family
ID=48293189
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) |
-
1960
- 1960-07-13 SU SU673378A patent/SU136951A1/en active
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