Epoxy cast dry-type distribution transformer high-voltage coil sealed by epoxy resin casting, using epoxy resin performance, cracking, high temperature, high mechanical strength, long life.
Structure testing in low magnificution, chemical composition analysis and microstructure examination were used to analyze the edge cracking of strip steel coil.
采用低倍组织试验、化学成分分析及金相检验等方法，对出现边裂的带钢卷进行了解剖分析。
3
The scattered coil - outlet - temperature (COT) and the unfixed temperature errors would influence severely the operation of cracking furnace and the ethylene yield.