Hot-pressing composite testing method based on thermal simulation test machine

A composite test and testing machine technology, which is applied in the preparation of test samples, the application of stable tension/pressure to test the strength of materials, sampling, etc., can solve the problems of composite performance of composite test pieces, and achieve the effect of short test time

Active Publication Date: 2017-06-30
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the thermal simulation testing machine is used for hot-compression composite testing, since it generates resistance heat through the pulse current to realize the heating and heat preservation of the test piece, and the two contacting parts will be damaged under the action of the pulse current. Resistance welding occurs on the contact surface of each specimen, and at the same time, diffusion welding occurs on the contact surface under the action of certain temperature and pressure, which will affect the final composite performance of the obtained composite specimen.

Method used

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  • Hot-pressing composite testing method based on thermal simulation test machine
  • Hot-pressing composite testing method based on thermal simulation test machine
  • Hot-pressing composite testing method based on thermal simulation test machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Carry out 1000℃, 20% reduction and 5s -1 Deformation rate of stainless steel / carbon steel composite test:

[0050] S1: Take stainless steel and carbon steel cylindrical specimens of φ10mm, and process the ends of the two specimens to be compounded into step shapes of φ8mm×2.4mm and φ8mm×9.6mm, so that the compression deformation can be concentrated at φ8mm; Sandpaper is used to polish the stainless steel test piece 1 and the carbon steel test piece 2 to be compounded, remove the oxide layer on the compounded surface, and clean the compounded surface with alcohol and acetone;

[0051] S2: if figure 1 and figure 2 As shown, the stainless steel test piece 1 and the carbon steel test piece 2 are respectively clamped on the clamping device 3, and the clamping device 3 is moved to make the surfaces to be combined of the stainless steel test piece 1 and the carbon steel test piece 2 contact each other;

[0052] S3: Heat the test piece to 1000°C, the heating rate is 10°C / s,...

Embodiment 2

[0057] 1100°C, 40% reduction and 5s -1 Deformation rate of stainless steel / carbon steel composite test:

[0058] S1: Take stainless steel and carbon steel cylindrical specimens of φ10mm, and process the ends of the two specimens to be compounded into step shapes of φ8mm×2.4mm and φ8mm×9.6mm, so that the compression deformation can be concentrated at φ8mm; Use sandpaper to polish the surface of the stainless steel specimen and the carbon steel specimen to be compounded, remove the oxide layer on the compounded surface, and clean the compounded surface with alcohol and acetone;

[0059] S2: Clamp the stainless steel test piece and the carbon steel test piece respectively on the clamping device, and move the clamping device so that the composite surfaces of the stainless steel test piece and the carbon steel test piece are in contact with each other;

[0060] S3: Heat the test piece to 1100°C, the heating rate is 10°C / s, and the holding time is 180s;

[0061] S4: Set the temper...

Embodiment 3

[0065] Carry out 1200℃, 60% reduction and 5s -1 Deformation rate of stainless steel / carbon steel composite test:

[0066] S1: Take stainless steel and carbon steel cylindrical specimens of φ10mm, and process the ends of the two specimens to be compounded into step shapes of φ8mm×2.4mm and φ8mm×9.6mm, so that the compression deformation can be concentrated at φ8mm; Use sandpaper to polish the surface of the stainless steel specimen and the carbon steel specimen to be compounded, remove the oxide layer on the compounded surface, and clean the compounded surface with alcohol and acetone;

[0067] S2: Clamp the stainless steel test piece and the carbon steel test piece respectively on the clamping device, and move the clamping device so that the composite surfaces of the stainless steel test piece and the carbon steel test piece are in contact with each other;

[0068] S3: Heat the test piece to 1200°C, the heating rate is 10°C / s, and the holding time is 180s;

[0069] S4: Set t...

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Abstract

The invention provides a hot-pressing composite testing method based on a thermal simulation test machine. The method comprises steps as follows: S1: to-be-composited material test pieces are prepared: two to-be-composited materials are processed into cylindrical test pieces, oxidation layers on composite surfaces of the to-be-composited materials are removed, and the composite surfaces are washed clean; S2: the test pieces are clamped: the two to-be-composited test pieces are clamped on clamping devices of the thermal simulation test machine respectively, and the clamping devices are moved to mutually contact with the composite surfaces of the two to-be-composited test pieces; S3: the two to-be-composited test pieces are heated and kept at the constant temperature; S4: heating current is interrupted, and the two to-be-composited test pieces are drawn away; S5: the two to-be-composited test pieces are compressed, and a composite test piece is obtained. The test method is simple and easy to implement when used for a hot-pressing composite test, and influences of resistance welding and diffusion welding caused by impulse current when the thermal simulation test machine performs heating and thermal insulation on the test pieces on final composite performance of the test piece are eliminated.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and in particular relates to a hot-pressing composite testing method based on a thermal simulation testing machine. Background technique [0002] Composite materials play a very important role in the development of modern science and technology. The research depth and application breadth of composite materials and the speed and scale of production development have become one of the important symbols to measure the advanced level of a country's science and technology. [0003] There are many methods for actually producing composite materials, such as explosive composite method, explosion + rolling composite method and rolling composite method. Among them, the rolling composite method has the advantages of stable product quality, low production cost and high production efficiency, and is the development trend of future production of composite materials. In order to provide a reference...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/08G01N1/28G01N1/44
CPCG01N1/286G01N1/44G01N3/08G01N2203/0003G01N2203/0017G01N2203/0075G01N2203/0226G01N2203/0266
Inventor 肖宏余超郑京伟王德蔚
Owner YANSHAN UNIV
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