A kind of testing tool for damp and heat resistance performance of sheet metal

Abstract

The invention discloses a tool for testing the damp and heat resistance performance of metal plates, which comprises a bottom plate, a vertical plate, an elastic pressing device and a stretching device. The elastic pressing device includes a lifting rod, an upper supporting plate, an upper pressing plate, a lower supporting plate, a lower Pressing plate, spring and pressure sensor; the stretching device includes two sliding plates, spring tension gauge and two fixing clips, the two sliding plates are respectively located on both sides of the elastic pressing device, and the two sliding plates are connected to the vertical The plate is slidingly connected, one end of the spring tension gauge is connected with the sliding plate, and the other end is connected with the fixing clip. After adopting the above structure, the pressing force can be adjusted while the metal plate is being pressed, and the pressure sensor can detect the actual pressure value of the metal plate. It can make the same part of the same metal sheet not only bear the compressive force, but also bear the tensile force, can reflect the stress state when the metal sheets are stacked, and can reflect the actual corrosion degree of the metal sheets.

Description

technical field [0001] The invention relates to a testing device for a metal plate, in particular to a tool for testing the damp and heat resistance performance of a metal plate. Background technique [0002] Fingerprint-resistant continuous hot-dip galvanized sheet is a product with fingerprint-resistant treatment on the surface of continuous hot-dip galvanized sheet. It is mainly used in the manufacture of computer cases, servers, and back panels of home appliances. The surface resistance to humidity and heat is one of the main indicators to measure the quality of the fingerprint-resistant continuous hot-dip galvanized sheet. The purpose is to detect whether the surface of the steel coil is corroded when it is transported and stored in a humid and hot environment. [0003] At present, the general method for testing the resistance to heat and humidity of fingerprint-resistant continuous hot-dip galvanized sheets is as follows: place a single piece or stack of metal sheets t...

AI Technical Summary

Problems solved by technology

In order to improve the qualified rate of detection and judgment, manufacturers need to rework or improve the process level, which will increase the investment in production or manufacturing costs

[0011] 2. The structural design is unreasonable and it is very inconvenient to use: there are lock nuts and lock bolts around the metal plate. Every time it is placed, all the lock nuts and lock bolts must be unscrewed, and then the upper layer The splints are removed to allow the sheet metal to be placed

The whole operation is cumbersome, labor-intensive, and very inconvenient to use

[0012] 3. In the test, the compressive force and tensile force borne by the same metal plate are not uniform. For example, the part clamped by the clamping plate or vise only bears the compressive force, and is not clamped by the clamping plate or vise The part only bears the tensile force, that is, the same part of the same metal plate cannot bear both the compressive force and the tensile force, so it cannot reflect the stress state when the metal plates are stacked, so the test data of the heat and humidity resistance tested Will not reflect the actual degree of corrosion of the metal sheet

Images