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RU2216006C1 - Technique determining elastic and strength properties of wire - Google Patents

Technique determining elastic and strength properties of wire Download PDF

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Publication number
RU2216006C1
RU2216006C1 RU2002121953A RU2002121953A RU2216006C1 RU 2216006 C1 RU2216006 C1 RU 2216006C1 RU 2002121953 A RU2002121953 A RU 2002121953A RU 2002121953 A RU2002121953 A RU 2002121953A RU 2216006 C1 RU2216006 C1 RU 2216006C1
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RU
Russia
Prior art keywords
wire
load
deformation
indenters
impact force
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RU2002121953A
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Russian (ru)
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RU2002121953A (en
Inventor
Е.С. Ватолин
Original Assignee
Ватолин Евгений Степанович
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Priority to RU2002121953A priority Critical patent/RU2216006C1/en
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Publication of RU2216006C1 publication Critical patent/RU2216006C1/en
Publication of RU2002121953A publication Critical patent/RU2002121953A/en

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  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
  • Tires In General (AREA)
  • Ropes Or Cables (AREA)

Abstract

FIELD: establishment of basic mechanical properties of wires. SUBSTANCE: technique determining elastic and strength properties of wire consists in deformation of wire to maximal stress with recording of its load and deformation, in construction of load curve relating impact force and depth of penetration of indenters. Ultimate strength of wire is found by value of recorded load and deformation and limits of proportionality, elasticity and yield of material of wire are established by load curve relating impact force and depth of penetration of indenters. Wire is deformed by dynamic load increasing discretely and applied to different points over length of sample between two wedge-shaped indenters with sharpening angle of 120 degrees. EFFECT: increased accuracy of test and reliability of obtained results, reduced cost of test.

Description

Известен способ определения механических характеристик проволоки ГОСТ 2246-70, ГОСТ 10446-80, ГОСТ 1497-84 (Методы испытания на растяжение). A known method for determining the mechanical characteristics of the wire GOST 2246-70, GOST 10446-80, GOST 1497-84 (Tensile test methods).

Недостатками известных способов являются:
1) наличие проскальзования захвата проволоки при растягивания образца на разрывной машине и наличие контактных напряжений на образце, что снижает точность и надежность полученных результатов испытаний;
2) необходимость иметь дорогостоящее оборудование (пресса) и высококвалифицированные кадры испытателей и специальных лабораторий;
3) невозможность контролировать качество проволоки в процессе ее изготовления (проката), что не исключает вероятность брака.
The disadvantages of the known methods are:
1) the presence of wire gripping slippage during stretching of the sample on a tensile testing machine and the presence of contact stresses on the sample, which reduces the accuracy and reliability of the test results;
2) the need to have expensive equipment (press) and highly qualified personnel of testers and special laboratories;
3) the inability to control the quality of the wire in the process of its manufacture (rental), which does not exclude the possibility of marriage.

Цель изобретения - увеличение точности испытаний и надежности получаемых результатов, а также снижение ее стоимости. The purpose of the invention is to increase the accuracy of tests and the reliability of the results, as well as reducing its cost.

Поставленная цель достигается тем, что проволоку деформируют между двумя инденторами клинообразной формы с углом прострения 120 градусов по радиусу проволоки (поперек) дискретно увеличивающейся нагрузкой, прикладываемой в разные точки по длине образца. This goal is achieved in that the wire is deformed between two wedge-shaped indenters with a cutting angle of 120 degrees along the radius of the wire (across) a discretely increasing load applied at different points along the length of the sample.

Способ осуществляется следующим образом. The method is as follows.

Индентором клинообразной формы ударяют по радиусу проволоки, расположенной на основании также клинообразной формы с дискретно увеличивающейся энергией удара, каждый раз в разные точки испытываемого отрезка проволоки и определяют величину энергии удара и соответствующую ей глубину деформирования проволоки. Энергию удара увеличивают до тех пор, пока не отрубится конец испытываемого образца проволоки. A wedge-shaped indenter is struck along the radius of the wire located on the base of the wedge-shaped with discrete increasing impact energy, each time at different points of the tested wire segment and the magnitude of the impact energy and the corresponding depth of deformation of the wire are determined. The impact energy is increased until the end of the test wire sample is chopped off.

По максимальному значению нагрузки и соответствующей деформации проволоки определяют предел прочности на растяжение, а по построенной нагрузочной кривой, связывающей силу удара и глубину внедрения инденторов, определяют предел пропорциональности, упругости, текучести и другие показатели. The maximum tensile strength is determined by the maximum value of the load and the corresponding wire deformation, and the proportionality, elasticity, yield strength, and other indicators are determined by the constructed load curve connecting the impact force and the indenter penetration depth.

Использование предлагаемого способа определения механических свойств металла проволоки снижает стоимость испытательных работ, не требует изготовления специальных образцов, прост в исполнении и позволяет получать надежные и достоверные результаты. Using the proposed method for determining the mechanical properties of metal wire reduces the cost of testing, does not require the manufacture of special samples, is simple to implement and allows you to get reliable and reliable results.

Claims (1)

Способ определения упругих и прочностных свойств проволоки, включающий деформирование проволоки до максимального напряжения с регистрацией ее нагрузки и деформации и построением нагрузочной кривой, связывающей силу удара и глубину внедрения инденторов, при этом по величине регистрируемой нагрузки и деформации определяют предел прочности материала проволоки, а по построенной нагрузочной кривой, связывающей силу удара и глубину внедрения инденторов, определяют пределы пропорциональности, упругости и текучести материала проволоки, отличающийся тем, что проволоку деформируют дискретно увеличивающейся приложенной к разным точкам по длине образца динамической нагрузкой между двух инденторов клинообразной формы с углом приострения 120o.A method for determining the elastic and strength properties of a wire, including deformation of the wire to maximum stress with registration of its load and deformation and the construction of a load curve connecting the impact force and the penetration depth of the indenters, the tensile strength of the wire material being determined from the recorded load and deformation, and from the constructed the load curve connecting the impact force and the penetration depth of the indenters, determine the limits of proportionality, elasticity and fluidity of the wire material, about Leach in that the wire is deformed by discretely increasing applied to different points along the length of the dynamic load the sample between two indenters wedge shape with an angle priostreniya 120 o.
RU2002121953A 2002-08-19 2002-08-19 Technique determining elastic and strength properties of wire RU2216006C1 (en)

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RU2216006C1 true RU2216006C1 (en) 2003-11-10
RU2002121953A RU2002121953A (en) 2004-03-20

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2514095C1 (en) * 2012-08-28 2014-04-27 Общество с ограниченной ответственностью "АПТ" Method and device for impact-dynamic tests of cutting wire

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989006790A1 (en) * 1988-01-19 1989-07-27 Battelle Development Corporation Determining plane strain fracture toughness and the j-integral for solid materials using stress field modified miniature specimens
WO1989006789A1 (en) * 1988-01-19 1989-07-27 Battelle Development Corporation Determining fracture mode transition behavior of solid materials using miniature specimens
SU1516844A1 (en) * 1988-02-01 1989-10-23 Московский Инженерно-Физический Институт Apparatus for mechanical tests of materials in bending
DE19540891A1 (en) * 1994-11-08 1996-05-09 Asahi Glass Co Ltd Testing strength of brittle material pieces
US5922967A (en) * 1996-09-20 1999-07-13 Honda Giken Kogyo Kabushiki Kaisha Method and apparatus for estimating loads imposed on structural body

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989006790A1 (en) * 1988-01-19 1989-07-27 Battelle Development Corporation Determining plane strain fracture toughness and the j-integral for solid materials using stress field modified miniature specimens
WO1989006789A1 (en) * 1988-01-19 1989-07-27 Battelle Development Corporation Determining fracture mode transition behavior of solid materials using miniature specimens
SU1516844A1 (en) * 1988-02-01 1989-10-23 Московский Инженерно-Физический Институт Apparatus for mechanical tests of materials in bending
DE19540891A1 (en) * 1994-11-08 1996-05-09 Asahi Glass Co Ltd Testing strength of brittle material pieces
US5922967A (en) * 1996-09-20 1999-07-13 Honda Giken Kogyo Kabushiki Kaisha Method and apparatus for estimating loads imposed on structural body

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Проволока. Методы испытания на растяжение. ГОСТ 10446-80. *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2514095C1 (en) * 2012-08-28 2014-04-27 Общество с ограниченной ответственностью "АПТ" Method and device for impact-dynamic tests of cutting wire

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Effective date: 20070820