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一、引言冶金设备上有许多油缸是在高温环境中进行工作的。这些油缸的密封件材料除了要满足一般油缸密封材科应具备的各种性能参数以外,还应当着重考虑在高温条件下的几个实际问题: 1、高温时,尤其是局部过热时是否分解、变性; 2、高温时,物理机械性能的下降是否能继续满足密封要求; 3、高温时氧化性能及与难燃液压油的互溶性; 4、不粘着金属,保持摩擦系数在允许范围内;
I. INTRODUCTION There are many fuel tanks on metallurgical equipment that work in high temperature environment. In addition to meet the general cylinder seal materials Section should have a variety of performance parameters, but also should focus on considering several practical problems under high temperature conditions: 1, high temperature, especially when the local overheating decomposition, Denaturation; 2, high temperature, the physical and mechanical properties of the decline can continue to meet the sealing requirements; 3, high temperature oxidation properties and miscibility with the flame retardant hydraulic oil; 4, non-stick metal, keep the friction coefficient within the allowable range;