Special curing fixture for cemented dual bars and fixing method for cemented dual bars in tensile strength test for coating

Abstract

The invention relates to a special curing fixture for cemented dual bars and a fixing method for cemented dual bars in tensile strength test for a coating. The curing fixture comprises a base and a curing fixture clamping groove seat, wherein the curing fixture clamping groove seat comprises a location plate arranged on the base, a clamping groove seat arranged slantwise, and a top cover; the clamping groove seat is provided with a plurality of clamping grooves extending along the slanting direction of the clamping groove seat and capable of being used for fixing the cemented dual bars; the top cover is located on the top ends of the clamping grooves and vertical to the bottom surface of the clamping groove seat; a plurality of threaded holes with centres superposed with the central lines of the plurality of clamping grooves are formed on the top cover; and the location plate is provided with a location surface which is located at the bottom ends of the clamping grooves and parallel to the top cover. The special curing fixture for the cemented dual bars provided by the invention adopts novel design; the inclining design of the inclined clamping grooves ensures the concentricity of the cemented dual bars; with the design of the plurality of clamping grooves, the efficiency is greatly increased, and the identity of test conditions are ensured; and compared with the prior art, the special curing fixture for the cemented dual bars provided by the invention is simple and efficient to use, and stable and accurate in test result.

Description

technical field [0001] The invention relates to a tooling, in particular to a curing tool for fixing a cemented dual rod when measuring the bonding strength of a coating, and also relates to a fixing method for a cemented dual rod in a coating tensile strength test. Background technique [0002] Coating technology is an important means of protection and repair in the modern processing and manufacturing industry, and the bonding strength of the coating is an important indicator for evaluating the performance of the coating. The test method for the tensile bonding strength is: according to the standard to make the tensile cemented dual rods of the specified size, spray coating on the end face of one dual rod, and perform sandblasting on the other end face, and then glue the dual rods with special glue. Connected together, after heating and curing, the tensile strength test is carried out on a universal testing machine. During the cementing and curing process, it is necessary ...

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Problems solved by technology

[0003] In the prior art, there is not yet a curing tool specially used for cementing the dual rods, but ordinary clamps are usually used to fix the cemented dual rods, and there are the following deficiencies: one is , a fixture can only fix one cemented dual rod at a time, and the tensile bond strength test of the coating requires testing 3 to 5 samples. A single cemented dual rod curing tool cannot guarantee the identity of the test conditions, and the efficiency is low; the second is , during the heating and curing process, the cemented dual rod is easy to overflow glue, the ordinary fixture is easy to be polluted, and it is inconvenient to clean and take and place the sample; the third is that the pressure of the ordinary fixture is not uniform enough, which affects the test results

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