Curing device for viscose tensile sample

Abstract

The invention discloses a curing device for a viscose tensile sample. A plurality of shelving grooves parallel to one side of the square chassis are formed in the top surface of the square chassis; sealing plates are arranged at two ends of the shelving groove; a plurality of through holes are formed in the sealing plate; a jacking assembly is arranged in the through hole; the abutting assembly comprises a tip, an ejector rod and a spring. An internal threaded hole is formed in the tip; one end of the ejector rod is provided with an external thread screwed on the internal thread hole, and theother end is provided with a limiting block; the spring is sleeved on the ejector rod; the tip and the spring are located on the inner side of the sealing plate, the limiting block is located on the outer side of the sealing plate, a glue flowing groove perpendicular to the containing groove is formed in the square base plate and divides the square base plate into two areas with the same size, a plurality of limiting supports are arranged above the two areas of the square base plate, a plurality of threaded holes are formed in the limiting supports, and screws are screwed into the threaded holes. By changing the structures of the pressing heads on the two sides, the uniformity and quantitative adjustment of the extrusion force of the sample rod and the bonding surface can be realized.

Description

Technical field [0001] The invention relates to the field of viscose tensile sample equipment, in particular to a curing device for viscose tensile sample. Background technique [0002] As a special process, thermal spraying technology has been widely used in many high-end manufacturing industries to increase the service life of parts and give special performance. The quality judgment indexes for thermal spraying performance are divided into metallographic indexes, thickness indexes, their corresponding special performance indexes, and mechanical performance indexes represented by coating adhesion bonding performance, coating toughness, and coating tensile strength. The universal testing machine is used to test the mechanical properties of the bonding strength in accordance with GB / T 8642-2002 and ASTM C633-01. The current viscose curing tools for tensile specimens are mostly simple V-groove structures to ensure coating adhesion The central axis of the rod and the dual rod are a...

AI Technical Summary

Problems solved by technology

Use a universal testing machine to test the mechanical properties of the bonding strength according to GB / T 8642-2002 and ASTM C633-01. The current tensile sample viscose curing tooling is mostly a simple V-shaped groove structure to ensure coating adhesion The central axis of the rod and the dual rod are centered, and the coating bonding rod and the dual rod are placed on the adhesive surface at an inclination angle of 75° when the coating bonding rod and the dual rod are placed against the glued surface. Extrusion is done, but this device is not suitable for bonding sticks with a small butt joint area. In addition, under the pure gravity without other restraint devices, the placement angle will be single and cannot be adjusted flexibly. The adhesive surface is prone to relative movement during the oven process; there are still slightly more complicated devices that add rotatable screw rods at both ends to lock, but after locking, the screw rods will rotate together against the adhesive rod, resulting in coaxial alignment. The centrality changes, and the force used for locking is not easy to quantify in actual operation. The difference between these different samples directly leads to the difference in the bonding effect and finally leads to the difference in the bonding strength test results.

When the sample enters the high-temperature oven, excess tear-like liquefied droplets will flow out from the contacted viscose surface, adhere to the contact surface between the sample rod and the V-shaped surface of the device, and converge at the bottom of the V-shaped groove. In the end, it will be stuck together with the bonding rod, which will easily cause the risk of inconvenient removal of the sample and the risk of breaking. It takes 10 hours to prepare a bonded sample. If the result difference caused by this will cause huge loss and increase the quality control stability

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