SU127844A1 - Method for determining coefficient of linear thermal expansion of materials - Google Patents

Method for determining coefficient of linear thermal expansion of materials

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Publication number
SU127844A1
SU127844A1 SU633567A SU633567A SU127844A1 SU 127844 A1 SU127844 A1 SU 127844A1 SU 633567 A SU633567 A SU 633567A SU 633567 A SU633567 A SU 633567A SU 127844 A1 SU127844 A1 SU 127844A1
Authority
SU
USSR - Soviet Union
Prior art keywords
thermal expansion
materials
linear thermal
samples
determining coefficient
Prior art date
Application number
SU633567A
Other languages
Russian (ru)
Inventor
А.А. Чекмарев
Original Assignee
А.А. Чекмарев
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 А.А. Чекмарев filed Critical А.А. Чекмарев
Priority to SU633567A priority Critical patent/SU127844A1/en
Application granted granted Critical
Publication of SU127844A1 publication Critical patent/SU127844A1/en

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  • Investigating Or Analyzing Materials Using Thermal Means (AREA)

Description

Известны способы опрелс.юни  коэффициента .TMHeimoro термического расширени  материалов путем измерени  прнраи1,еии  д.тины испытуемого образца.Methods are known for determining the coefficient .TMHeimoro of thermal expansion of materials by measuring the properties of the test specimen sample.

Предлагаемый способ более совершенен по сравнению о известиыми , так как он позвол ет быстро определ ть относительный коэффициент линейного расширени  двух испытуемых образцов в реальных услози л их нагреза. Это достигаетс  e, что оба образца жестко закрепл ют с одного конца, нагревают в печи до температуры плавлени  припо , которым запаивают противопо.тожньп конец, после чего образцы охлаждают и измер ют величин - их взнИмного смешени  на спа нном конце.The proposed method is more perfect compared to lime, since it allows you to quickly determine the relative coefficient of linear expansion of the two test specimens in real conditions of their heating. It is achieved that both samples are firmly fixed at one end, heated in a furnace to the melting temperature of the solder, which is sealed to the opposite end, after which the samples are cooled and the values measured - their chargeable at the end of the bath.

На чертеже изображена схема составного образца дл  определени  коэффициента расширени  по предлагаемому способу.The drawing shows a schematic of a composite sample for determining the expansion coefficient of the proposed method.

Один из испытуемых образцов (центральный) выполн етс  в виде трубки ;, а другой-в виде ете1)жп  2, неподвижпо закрепленного одним «ОНцом в трубке /. Второй конец стержн  2 может свободно перемещатьс  внутри трубки при расш)ренип во врем  пагрева. Оба образца помешаюгс  в печь и нагреваютс  до температуры плавлени  припо  3, нанесенного па свободные концы образцов. При это.м образцы 1 и 2 снанваютс . Дл  устранени  повреждени  епа  во врем  остывани  трубка / имеет надрезы. Дл  определени  относительтюго коэффицнента линейного термического расширени  составного образна измер етс  рассто ние между заранее намеченнымп точками Л и до пайки и после пайки, разность их Д/ делитс  па базовое рассто ппе L п разность между температурой плавлени  припо  и начальной температурой.One of the test samples (central) is made in the form of a tube; and the other, in the form of ate1) zhp 2, fixedly fixed with one "HE in a tube /. The second end of the rod 2 can move freely inside the tube when extended during pagreva. Both samples are stirred into the furnace and heated to the melting temperature of solder 3 applied to the free ends of the samples. At that, samples 1 and 2 are blown off. To eliminate damage to the EPA during cooling, the tube / has notches. To determine the relative coefficient of linear thermal expansion of the composite shaped, the distance between the previously marked points L before soldering and after soldering is measured, their difference D / is divided by the base distance L n the difference between the melting point of solder and the initial temperature.

Указанньп способ может быть применен дл  од- еделени  относительного удлинени  в случае местного неоднородного нагрева деталейThis method can be applied to limit elongation in case of local non-uniform heating of parts.

различной формы, например при местной пайке с нагревом током выс& кой частоты или с помошью горелки.of various shapes, for example, when local brazing with a high frequency current or with a burner aid.

Предмет изобрете«и The subject invention and

Способ определени  коэффициента линейного термического расширени  материалов путем измерени  приращени  длины испытуемого образца , отличающийс  тем, что, с целью ускоренного определени  относительного коэффициента линейного расширени  двух испытуемых образцов в реальных услови х их нагрева, оба образца жестко закрепл ют с одного конца, нагревают в печи до температуры плавлени  припо , которым запаивают противополож-ный конец, после чего образцы охлаждают и Измер ют величину их смещени  относительно друг друга на спа нном конце.The method of determining the coefficient of linear thermal expansion of materials by measuring the increment of the length of the test sample, characterized in that, in order to quickly determine the relative coefficient of linear expansion of the two test samples under actual heating conditions, both samples are rigidly fixed at one end. the melting points of the solder with which the opposite end is sealed, after which the samples are cooled and the magnitude of their displacement relative to each other at the heat end is measured.

SU633567A 1959-07-09 1959-07-09 Method for determining coefficient of linear thermal expansion of materials SU127844A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU633567A SU127844A1 (en) 1959-07-09 1959-07-09 Method for determining coefficient of linear thermal expansion of materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU633567A SU127844A1 (en) 1959-07-09 1959-07-09 Method for determining coefficient of linear thermal expansion of materials

Publications (1)

Publication Number Publication Date
SU127844A1 true SU127844A1 (en) 1959-11-30

Family

ID=48399089

Family Applications (1)

Application Number Title Priority Date Filing Date
SU633567A SU127844A1 (en) 1959-07-09 1959-07-09 Method for determining coefficient of linear thermal expansion of materials

Country Status (1)

Country Link
SU (1) SU127844A1 (en)

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