SU405049A1 - METHOD FOR DETERMINING THE STRENGTH ON THE IMPACT OF METAL ENAMEL COATINGS - Google Patents

METHOD FOR DETERMINING THE STRENGTH ON THE IMPACT OF METAL ENAMEL COATINGS

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Publication number
SU405049A1
SU405049A1 SU1372314A SU1372314A SU405049A1 SU 405049 A1 SU405049 A1 SU 405049A1 SU 1372314 A SU1372314 A SU 1372314A SU 1372314 A SU1372314 A SU 1372314A SU 405049 A1 SU405049 A1 SU 405049A1
Authority
SU
USSR - Soviet Union
Prior art keywords
impact
strength
determining
coating
enamel coatings
Prior art date
Application number
SU1372314A
Other languages
Russian (ru)
Inventor
Г. Сохин В.
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 filed Critical
Priority to SU1372314A priority Critical patent/SU405049A1/en
Application granted granted Critical
Publication of SU405049A1 publication Critical patent/SU405049A1/en

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Description

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Изобретение относитс  к онределению прочности на удар эмалевых покрытий на металлах и может использоватьс  в химическом машиностроении .The invention relates to the determination of the impact strength of enamel coatings on metals and can be used in chemical engineering.

Известен способ определени  прочности на удар эмалевых покрытий на металлах путем нанесепи  ударов по различным участкам образца с энергией, последовательно уменьшающейс  до величины, не вызывающей разрушени  покрыти .There is a known method for determining the impact strength of enamel coatings on metals by applying a chain of blows to various parts of the sample with energy decreasing to a value that does not cause destruction of the coating.

Цель изобретени  - повышение точности измерени .The purpose of the invention is to improve the measurement accuracy.

Достигаетс  это тем, что измер ют электрическое сопротивление в местах испытани  до удара и после него и по изменению электричеокого сопротивлеии  определ ют степень разрушени .This is achieved by measuring the electrical resistance at the test sites before and after the impact and determining the degree of destruction by the change in electrical resistance.

Способ заключаетс  в следующем.The method is as follows.

Металлический эмалированный образец, предназначенный дл  испытаний, размечают дл  ланесени  ударов. В местах предполагаемого нанесени  ударов измер ют электрическое сопротивление эмалевого покрыти . По результатам измерений определ ют среднюю величину сопротивлени  Ro целого (неразрушейного ) покрыти . По намеченны.м местам нанос т удары с помощью устройства типа прибора Вегнера. Велич.ипу энергии первых ударов выбирают таки.м образом, чтобы было четко выраженное разруще ие покрыти . Дл  The enamelled metal sample intended for testing is marked out to be struck. The electrical resistance of the enamel coating is measured at the sites of the intended impact. Based on the measurement results, the average resistance value Ro of the whole (non-destructive) coating is determined. The intended places are struck with a device of the Wegner type instrument. The magnitude of the first impact energy is chosen in such a way that there is a clearly pronounced destruction of the coating. For

ка/кдон установленной величины энергии удара Ai производ т несколько ударов, измер ют электрическое сопротивление разрушенных участков и .наход т среднюю величину сопротивлени  Ri дл  данной уста«овленной величины энергии удара At. Затем уменьшают энергию удара и испытани  повтор ют до тех пор, пака удары не вызовут изменение сопротивлени  покрыти .ka / kdon of the set value of the impact energy Ai, several blows are taken, the electrical resistance of the damaged areas is measured and the average resistance Ri is found for a given mouth of the impact energy At. Then the impact energy is reduced and the tests are repeated until the blows cause a change in the resistance of the coating.

В результате получают таблицу значений различных величин энергии удара Ai и соответствующих им различных средних величин сопротивлени  i покрыти , характеризующих степень разрушени  в месте испытап1и .As a result, a table is obtained of the values of various values of impact energy Ai and the corresponding average values of resistance i of the coating corresponding to the degree of destruction at the test site.

Использу  разность величин сопротивлени  целого RO и разрушенного покрыти  при уменьшении энергии удара, наход т энергию, не вызывающую разрушени  покрыти , котора  и определ ет прочность нокрыти  при испытании на удар.Using the difference in resistance values of the whole RO and the destroyed coating while reducing the impact energy, one finds the energy that does not cause the coating to break, which determines the strength of the coating during impact testing.

Величину энергии удара Ло, определ ющую прочность на удар эмалевого покрыти , можно более точно найти аналитически, нользу сь полученной таблицей и методом наименьщих квадратов.The magnitude of the impact energy Lo, which determines the resistance to impact of the enamel coating, can be more accurately determined analytically using the resulting table and the least squares method.

Предмет и в о б р е т е )i и   Способ.определени  прочности на удар эма3 левых покрытий на металлах путем нанесени  ударов по различным участкам образца с энергией , последовательно уменьшающейс  до ееличины , не вызывающей разрушени  покрыги , отличающийс  тем, что, с целью повышени .S 4 точности, измер ют электрическое сопротивлейие в .местах испытани  до удара и после него и по изменению электрического сопротивлени  определ ют степень разрушени .The subject matter and in the composition of e) i and Method. Determination of the impact strength of ema3 left coatings on metals by striking various parts of the sample with energy consistently decreasing to a value that does not cause destruction of the coating, characterized in that increase. S 4 accuracy, measure the electrical resistance in the test sites before and after the impact and the degree of destruction is determined by the change in electrical resistance.

SU1372314A 1969-10-27 1969-10-27 METHOD FOR DETERMINING THE STRENGTH ON THE IMPACT OF METAL ENAMEL COATINGS SU405049A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU1372314A SU405049A1 (en) 1969-10-27 1969-10-27 METHOD FOR DETERMINING THE STRENGTH ON THE IMPACT OF METAL ENAMEL COATINGS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU1372314A SU405049A1 (en) 1969-10-27 1969-10-27 METHOD FOR DETERMINING THE STRENGTH ON THE IMPACT OF METAL ENAMEL COATINGS

Publications (1)

Publication Number Publication Date
SU405049A1 true SU405049A1 (en) 1973-10-22

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Application Number Title Priority Date Filing Date
SU1372314A SU405049A1 (en) 1969-10-27 1969-10-27 METHOD FOR DETERMINING THE STRENGTH ON THE IMPACT OF METAL ENAMEL COATINGS

Country Status (1)

Country Link
SU (1) SU405049A1 (en)

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