SU142116A1 - Electrolyte for detecting austenite grain in high-carbon and alloyed rail steel - Google Patents

Electrolyte for detecting austenite grain in high-carbon and alloyed rail steel

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Publication number
SU142116A1
SU142116A1 SU698892A SU698892A SU142116A1 SU 142116 A1 SU142116 A1 SU 142116A1 SU 698892 A SU698892 A SU 698892A SU 698892 A SU698892 A SU 698892A SU 142116 A1 SU142116 A1 SU 142116A1
Authority
SU
USSR - Soviet Union
Prior art keywords
electrolyte
detecting
carbon
austenite grain
rail steel
Prior art date
Application number
SU698892A
Other languages
Russian (ru)
Inventor
А.И. Лымарь
Н.А. Сахарова
Original Assignee
А.И. Лымарь
Н.А. Сахарова
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.И. Лымарь, Н.А. Сахарова filed Critical А.И. Лымарь
Priority to SU698892A priority Critical patent/SU142116A1/en
Application granted granted Critical
Publication of SU142116A1 publication Critical patent/SU142116A1/en

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Description

Электролиты, примен емые обычно дл  вы влени  зерна аустенита, непригодны дл  протравливани  шлифов высокоуглеродистой и легированной рельсовой стали вследствие образовани  на поверхности шлифа темного налета, вуалирующего границы зерен.Electrolytes commonly used to detect austenite grains are unsuitable for etching high-carbon and alloyed rail steel sections due to the formation of a dark deposit on the surface, veiling the grain boundaries.

Описываемый электролит не имеет этого недостатка. Достигаетс  это тем, что в состав электролита ввод т хромовый ангидрид, в присутствии которого вуалирующа  пленка, образующа с  в процессе анодного растворени  при обработке шлифа электролитом, раствор етс  и удал етс  с поверхности шлифа.The described electrolyte does not have this disadvantage. This is achieved by introducing chromic anhydride into the electrolyte composition, in the presence of which the veiling film formed during anodic dissolution during the thin section treatment with electrolyte dissolves and is removed from the thin section surface.

Наилучшие результаты достигаютс  при работе с электролитолк содержащим 300 г1л сернокислого алюмини  и 20 мл1л хромового анг1:др да . Электролитическое травление следует осуществл ть в течение 60 сек при плотности тока 0,6-0,9 alcjyi и напр жении 10-15 в.The best results are achieved when working with an electrolit containing 300 g1l of aluminum sulphate and 20 ml of chrome angl: other yes. Electrolytic etching should be carried out for 60 seconds at a current density of 0.6-0.9 alcjyi and a voltage of 10-15 c.

Рассто ние шлифа,  вл ющегос  анодом, от катода из нержавеющей стали должно составл ть 6-10 мм. Перед травлением щлиф промывают спиртом, а после травлени  - в струе проточной воды и затем в спирте. Просушивалс  шлиф подогретым сжатым воздухом.The distance of the thin section, which is the anode, from the stainless steel cathode should be 6-10 mm. Before etching, the schliffe is washed with alcohol, and after etching, with a stream of running water and then with alcohol. Dry dried with heated compressed air.

Введение небольщих добавок хромового ангидрида в раствор сернокислого алюмини  и изменение режима травлени  дало хорошие результаты вы влени  зерна аустенита при травлении рельсовой стали со структурой сорбита, тростита и мартенсита.,:,,- ;: :The introduction of small additions of chromic anhydride into the aluminum sulphate solution and a change in the etching mode gave good results in detecting austenite grain by etching rail steel with a structure of sorbitol, trostite, and martensite.,: ,, -::

Предмет и з о б р е т е н и  Subject and title

1. Электролит дл  вы влени  зерна аустенита в высокоуглеродистых и легированных рельсовых стал х, состо щий из водного раствора сернокислого алюмини , отличающийс  тем, что, с целью удалени  наMl42116- 2 лета продукт9й.,рдсп9да анодного растворени  с поверхности шлифа, в его сс(став -ввОд гхрокЙвый ангидрид.1. An electrolyte for detecting austenite grain in high carbon and doped rail steels, consisting of an aqueous solution of aluminum sulphate, characterized in that, in order to remove product 9y in M42426-2, the anodic dissolution of the anodic solution from the surface of the thin section, in his case ( becoming a VHF anhydride.

2j Электролит ПО;-Д1. 1,.о т л и ч а ю щ и и с  тем, что травление образца; 1|аследуемой стали(|существл ют в растворе, содержащем 30 г cepHOKHciioEb йлййинй  на 100 мл воды с добавкой 2 мл хромового ангидриДа при аанр й ении 10-15 в, плотности тока 0,6-0,9 а/см в течение 6Q сек. 2j Electrolyte software; -D1. 1. О т л ю and the fact that the sample is etched; 1 | test steel (| exist in a solution containing 30 g of cepHOKHciioEb solution per 100 ml of water with the addition of 2 ml of chromic anhydride and with a 10–15 in aerial density, current density of 0.6–0.9 a / cm for 6Q seconds

SU698892A 1961-02-08 1961-02-08 Electrolyte for detecting austenite grain in high-carbon and alloyed rail steel SU142116A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU698892A SU142116A1 (en) 1961-02-08 1961-02-08 Electrolyte for detecting austenite grain in high-carbon and alloyed rail steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU698892A SU142116A1 (en) 1961-02-08 1961-02-08 Electrolyte for detecting austenite grain in high-carbon and alloyed rail steel

Publications (1)

Publication Number Publication Date
SU142116A1 true SU142116A1 (en) 1961-11-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
SU698892A SU142116A1 (en) 1961-02-08 1961-02-08 Electrolyte for detecting austenite grain in high-carbon and alloyed rail steel

Country Status (1)

Country Link
SU (1) SU142116A1 (en)

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