Testing method for heat and humidity resistance of sheet metal
A metal plate and testing method technology, applied in the direction of applying stable tension/pressure to test the strength of materials, measuring devices, analyzing materials, etc., can solve cumbersome operations, high labor intensity, uneven compression force and tensile force, etc. problem, to achieve the effect of simple operation, reasonable design and high degree of automation
Active Publication Date: 2015-12-23
YANCHENG INST OF TECH
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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
Method used
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[0039] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific preferred embodiments.
[0040] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific preferred embodiments.
[0041] Such as figure 1 As shown in the figure, a tool for testing the heat and humidity resistance of metal sheets includes a base plate 1 , a vertical plate 2 fixedly connected to the base plate 1 , an elastic pressing device 3 and a stretching device 4 .
[0042] Such as figure 2 As shown, the above-mentioned elastic pressing device 4 includes a lifting rod 41 , an upper supporting plate 43 , an upper pressing plate 44 , a lower supporting plate 45 , a lower pressing plate 46 , a spring 47 and a pressure sensor 48 .
[0043] The bottoms of the above-mentioned lower support plate 45 and the lifting rod 41 are all fixed on the base plate 1 , and the lifting of the lift...
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The invention discloses a testing method for heat and humidity resistance of sheet metal. The method comprises the following steps: installation of a testing tool for heat and humidity resistance; clamping of the sheet metal: a step of superposing more than three pieces of the sheet metal, then placing the superposed sheet metal between a lower pressing plate and an upper pressing plate and allowing a lifting bar to descend so that the upper pressing plate applies a pressing force on the central part of the sheet metal; clamping of two ends of the sheet metal with fixed clamps; compaction and drawing of the sheet metal: a step of allowing two sliding plates to slide towards two sides along a vertical plate so as to realize compaction and drawing of the sheet metal; heat and humidity resistance testing; corrosion detection; etc. The method is simple to operate and has a high automation degree, and heat and humidity resistance testing data of the method can reflect the actual corrosion degree of the sheet metal.
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...
Claims
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Login to View More IPC IPC(8): G01N3/18G01N17/00
Inventor 钱国东
Owner YANCHENG INST OF TECH