Test piece mechanical strength fixture for manufacturing high-strength structural adhesive and using method

Abstract

The invention relates to test piece mechanical strength fixtures used for manufacturing a high-strength structural adhesive and an application method. The first set of fixture is taken, a short column body of a base is inserted into a center hole of a first test piece, a long column body of the base is inserted into a hole of an outer sleeve, two pressing plates are fixed to the outer sleeve, and the first test piece is fixed to the base through the two pressing plates. The second set of fixture is taken, a short column body of a base is inserted into a center hole of a second test piece, a long column body of the base is inserted into a hole of an outer sleeve, two pressing plates are fixed to the outer sleeve, and the second test piece is fixed to the base through the two pressing plates. The long column body on the first set of fixture is fixed into an upper sleeve of a stretching force measuring machine, and the long column body on the second set of fixture is fixed into a lower sleeve of the stretching force measuring machine. The stretching force measuring machine is started to test the strength of the tensile force or torque of the whole test piece, that is, the bonding strength of the high-strength structural adhesive is tested. According to the test piece mechanical strength fixtures used for manufacturing the high-strength structural adhesive and the application method, not only can tensile force testing be conducted, but also torque testing can be conducted, and the adhesive thickness can be controlled; the tested tensile force and torque data are accurate; and the effect that the qualified rate of the automobile adhesive leaving a factory reaches 100% can be ensured.

Description

technical field [0001] The invention relates to a mechanical strength fixture for a test piece used for manufacturing high-strength structural adhesives and a use method for clamping the test piece. Background technique [0002] High-strength structural adhesive for automobile body. It is used in the bonding of parts that are not easy to spot weld or the strength cannot meet the requirements after spot welding. It has high durability after bonding, and can improve the rigidity, tensile strength and collision resistance of the car body. The use of high-strength structural adhesives can improve the performance of automobile bodies. As a result, automobile manufacturers pay more attention to the requirements for the use of high-strength structural adhesives for automobiles. Since there are no national standards or industry standards for high-strength structural adhesives for automobiles, only the supplier and the automobile manufacturer agree to use corporate standards. How to...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the test method for other glues generally adopts two iron plates to be bonded and cured by glue, and then clamps the two iron plates with a tensile machine to test the pulling force of the glue. This structure and method cause the thickness of the glue to vary. It is easy to control, so the measured tensile value is not accurate. If the rubber is produced according to the measured tensile value in this way, it will cause the user to fail the product.

And, adopt this structure and method to be unable to do the test of torque

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