Evaluation method for corrosion test of automobile radiator

A technology of automobile radiator and corrosion test, applied in the direction of weather resistance/light resistance/corrosion resistance, instruments, scientific instruments, etc., can solve the problems of radiator corrosion failure, etc., to achieve good reproducibility, controllable test process, and short test period Effect

Pending Publication Date: 2021-12-31
CHINA FIRST AUTOMOBILE
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for evaluating the corrosion test of automobile radiators, to solve the problem of the alternating action of many loads in the simulated actual corrosion of radiators, and to reflect the corrosion failure of radiators in subsequent use

Method used

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  • Evaluation method for corrosion test of automobile radiator
  • Evaluation method for corrosion test of automobile radiator
  • Evaluation method for corrosion test of automobile radiator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Embodiment 1 checks the corrosion resistance of 6 series aluminum alloy radiator

[0059] (1) Test method

[0060] Alternating climate test → damp heat test → alternating corrosion test

[0061] The climate change test adopts the FAW standard Q / CAM-64.8 climate change test method, which includes the following steps: The test sample is stored in a climate change test box with a test temperature of 80°C±2°C for 15.5h, and then stored in GB / T Store under 9278 conditions for 0.5h for state adjustment. The same sample is stored in a climate change test chamber at -40°C±2°C for 7.5h, and then stored under the conditions of GB / T 9278 for 0.5h for state adjustment. This is a cycle of climate change test.

[0062] The alternating corrosion test adopts the FAW standard Q / CAM-62.2 cyclic corrosion alternating test method, which includes the following steps: conduct a 4h salt spray test according to the test method in ISO 9227 Corrosion test in artificial environment-salt spray t...

Embodiment 2

[0076] Embodiment 2 checks the corrosion resistance of 3 series aluminum alloy radiators

[0077] (1) Test method

[0078] Alternating climate test → damp heat test → alternating corrosion test

[0079] (2) 10 cycle tests

[0080] One cycle is: high temperature (80℃±2℃, 80%RH)×15.5h→(room temperature)×0.5h→low temperature (-40℃±2℃)×7.5h→(room temperature)×0.5h→→humid heat Test (low humidity 35℃±3℃, 100%RH)×120h→salt spray test×4h→(room temperature)×4h→damp heat test (high humidity 50℃±2℃, 100%RH)×15.5h→(room temperature) ×0.5h, 7 days in total, 70 days in 10 cycles.

[0081] (3) After 10 cycle tests are completed, the airtightness test of the radiator is good (no air leakage at 5 bar pressure)

[0082] Table 7 Appearance inspection results of 3-series aluminum alloy radiators

[0083]

[0084] Table 8 Weight loss test results of heat sinks and condenser tubes of 3-series aluminum alloy radiators

[0085]

[0086] Table 9 Test results of sealing performance of 3-ser...

Embodiment 3

[0091] Embodiment 3 checks the corrosion resistance of 4 series aluminum alloy radiators

[0092] (1) Test method

[0093] Alternating climate test → damp heat test → alternating corrosion test

[0094] (2) 10 cycle tests

[0095]One cycle is: high temperature (80℃±2℃, 80%RH)×15.5h→(room temperature)×0.5h→low temperature (-40℃±2℃)×7.5h→(room temperature)×0.5h→→humid heat Test (low humidity 35℃±3℃, 100%RH)×120h→salt spray test×4h→(room temperature)×4h→damp heat test (high humidity 50℃±2℃, 100%RH)×15.5h→(room temperature) ×0.5h, 7 days in total, 70 days in 10 cycles.

[0096] (3) After 10 cycle tests are completed, the airtightness test of the radiator is good (no air leakage at 5 bar pressure)

[0097] Table 11 Appearance inspection results of 4-series aluminum alloy radiators

[0098]

[0099] Table 12 Weight loss test results of radiator fins and condenser tubes of 4-series aluminum alloy radiators

[0100]

[0101] Table 13 Test results of airtightness of 4-serie...

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Abstract

The invention relates to an evaluation method for a corrosion test of an automobile radiator. The evaluation method comprises the following steps: putting an aluminum alloy radiator sample into an alternating waiting test box, a corrosion alternating test box or a damp heat test box according to a corresponding test mode to carry out a cyclic combination test, and repeating the cyclic combination test for 10 times; evaluating the corrosion resistance failure of the radiator according to the appearance and weightlessness characteristics of the aluminum alloy radiator sample and the air tightness after the test; and establishing an evaluation standard. According to the corrosion test evaluation method for the automobile radiator, various environmental factors that the aluminum alloy is corroded can be more comprehensively considered, and the alternating effect of various loads under the actual corrosion condition of the radiator can be simulated, so that the radiator is subjected to the damage effect in the atmospheric environment as much as possible; the condition of corrosion failure of the radiator in future use is reflected through the result of the manual accelerated cycle combination test; standard testing equipment is adopted for testing, the testing process is controllable, reproducibility is good, the result is real, and the testing period is shorter.

Description

technical field [0001] The invention belongs to the technical field of automobile testing, in particular to a method for evaluating the corrosion test of automobile radiators. Background technique [0002] As a part of the vehicle air-conditioning system, the radiator is assembled at the lower part of the front part of the vehicle body. In order to better realize the lightweight of automobile products, its production material is preferably aluminum alloy, which has gradually replaced metal copper as the radiator material. However, it is easy to come into contact with corrosive media, such as snow melting agent, muddy water, etc. during driving. If the corrosion resistance of the materials used to manufacture the radiator does not meet the requirements, it will cause the aluminum alloy radiator to rust and leak. In the process of analyzing the rust of the radiator, it is found that the rust of the radiator is caused by external reasons. The condensing agent and grease are req...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N17/00
CPCG01N17/006G01N17/002
Inventor 张澍白扬徐赫唯何震王彩云陈帅邹军李加成
Owner CHINA FIRST AUTOMOBILE
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