渗透检测一般在10~50℃的温度范围内进行, 在此温度范围外, 特别是在低温情况下, 灵敏度会受到影响。对不同厂家生产的渗透材料, 在常温和低温下进行灵敏度对比试验, 得到了不同型号渗透材料的灵敏度特性。对低温情况下如何保证渗透检测灵敏度提出了建议措施。

Generally liquid penetrant testing is generally performed at temperature from 10℃ to 50℃. At other temperature, particularly at low temperature the sensitivity may be affected. This sensitivity experiment used various liquid penetrant materials made by deferent manufacturers at normal temperature and at low temperature, and it got the sensitivity characteristics of deferent type liquid penetrant materials. Some measures are present to guarantee the sensitivity of liquid penetrant testing at low temperature.