浅析福特汽车CETP 0000-L-467测试标准的试验步骤及方法
时间:2025-05-10 阅读:364
CETP 0000-L-467日常测试方案的三种基本模式:

一、A continuous wet phase at 25±2℃ where the test objects are exposed to a 0.5% NaCl solution. The wet condition is maintained by intermittent spray exposure and with a temperature control without drying, or with the humidity control set high enough to not cause any practical drying.
1. 25±2℃条件下持续高湿状态,在此阶段通过间歇喷洒曝露和无需干燥的温度控制将试样曝露在0.5%的氯化钠溶液中,或者通过高湿设定控制来保持试样的高湿状态。
二、 A two-step transition from wet to controlled humidity climate.
2.从湿润到可控湿度环境的两步转换。
三、A period under constant temperature/ humidity control; 50±0.6℃ and 70±3%RH. This is also the condition during weekend.
3.恒温恒湿控制阶段:50±0.6℃, 70±3% RH,这也是周末一直保持的状态。
Table 1. Climate program, step by step in automated mode
| Step | Time elapsed | Duration of step | Climate settings at start of step | Comments | |||
| no | h | m | h | m | T(°C) | %RH | Comments |
| la | 0 | 0 | 0 | 10* | 50* | 70* | Spray thoroughly 0.5% NaCl to wet and cool 0.5% 氯化钠,湿透且冷却 (此阶段开启喷淋,喷洒0.5% 盐水来实现湿润状态) |
| lb | 0 | 10 | 0 | 20 | 30-50 | wet | Cool chamber with maximum capacity 限度冷却试验箱 (此阶段以设备做功能能力来实现降温) |
| la’ | 0 | 30 | 0 | 3 | <30 | wet | Spray to regain wetness (cooling dries) 通过喷洒使干冷的试验箱再次湿润 (此阶段为第二次喷淋) |
| lc | 0 | 33 | 2 | 27 | <30 | wet(95) | 25±2 to be reached within 1 h from start (la) 从步骤 la 开始,一小时内达到 25±2从测试 (此阶段要设定目标温度,湿度95) |
| la’ | 3 | 0 | 0 | 3 | 25±2 | wet | Secure and support wetness by spraying 通过喷洒保持湿润 (此阶段为第三次喷淋) |
| lc’ | 3 | 3 | 2 | 54 | 25±2 | wet(95) | wet (95) = OK to set to 95% RH 湿度 (95)= 可以设置到 95%RH (此阶段已经稳定运行在温度25湿度95) |
| la’ | 5 | 57 | 0 | 3 | 25±2 | wet | Defines wet condition before climate control 环境控制前明确湿工况 (此阶段是第四次喷淋,也是次喷淋过 程) |
| 2a | 6 | 0 | 0 | 30 | 25±2 | wet(95) | Start of quick temperature rise without drying 开始快速加温,但不能干燥 (此阶段再次将温度控制在25,湿度控制在95) |
| 2b | 6 | 30 | 2 | 00 | 40±0.6 | wet(95) | Start of slow drying by diffusion 通过扩散,开始缓慢干燥 (此阶段控制要求温湿度线性变化) |
| 3a | 8 | 30 | 15 | 30 | 50±0.6 | 70±3 | Panels shall be free from visible wetness 板上无可见水迹 (此阶段控制要求温湿度线性变化) |
| 3a | 24 | 00 | - | - | 50±0.6 | 70±3 | End of “workday” procedure “工作日”程序结束 (到此阶段,一天24小时的测试工作完成) |
| Repeat steps | 1a - 3a another four times 步骤 la-3a 再電复 4 次 (到此阶段,总共完成5次循环,一周工作日五天的测试工作结束) | ||||||
| 3b 3b | 120 168 | 00 00 | 48 - | 00 - | 50±0.6 50±0.6 | 70±3 70±3 | Phase in with weekends in case of manual operations in ”workday” procedure (此阶段在周末的二天内设备工况保持在温度50湿度70) |
| Repeat steps | 1a-3b for required number of weeks (到此阶段,一周七天的测试工作结束) | ||||||
| * Provided proceeding from step 3a or 3b | |||||||

Fig. Workday (Mon.-Fri.) test cycle
工作日(周一至周五)的测试循环图

Complete weekly program.
一周七天的工作计划
参考文献:
1、满足CETP0000-L-467通用汽车标准的试验室加速腐蚀多功能复合盐雾箱技术方案
2、CETP 0000-L-467试验室加速循环腐蚀试验标准中文翻译版