车轮因制动过度而异常升温时,会发生热裂,危及行车安全。日本铁道综合技术研究所研制出一种能检测这种现象的防锈示温涂料,并且获得专利。过去使用的黑色涂料只在车轮温度升高时,涂膜才开始脱落。而这种防锈示温涂料膜是随着车轮温度的变化,分阶段地出现变化和脱落,能够准确表示温升程度,指出轮辋的危险温度,其防锈效果 When the wheels are abnormally heated due to excessive braking, thermal cracking may occur, which may endanger traffic safety. Japan Railway Institute of Integrated Technology developed a rust-proof temperature coating to detect this phenomenon, and patented. The black paint used in the past only began to fall off when the wheel temperature increased. This anti-rust temperature coating film is with the wheel temperature changes, changes and fall off in stages, can accurately represent the degree of temperature rise, pointed out the dangerous rim temperature, the rust effect