A test method for heat and humidity resistance of metal sheets

Abstract

The invention discloses a method for testing the heat and humidity resistance performance of metal plates, which comprises the following steps: installing a tool for testing the heat and humidity resistance performance; clamping the metal plates: stacking more than three metal plates, and then placing them between the lower pressing plate and the upper pressing plate During the first step, the lifting rod in the first step is lowered, so that the upper platen exerts a pressing force on the middle of the metal sheet; the two ends of the metal sheet are clamped with the fixing clips in the first step; the compression and stretching of the metal sheet : Two sliding plates slide to both sides along the vertical plate, and the metal plate is stretched while being pressed tightly; moisture and heat resistance test; corrosion detection and other steps. After adopting the above method, the operation is simple, the degree of automation is high, and the test data of the tested moisture and heat resistance can reflect the actual corrosion degree of the metal plate.

Description

technical field [0001] The invention relates to a detection method for metal plates, in particular to a test method for the resistance to heat and humidity of metal plates. 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 to be 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

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