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为机械摩擦部件配套的密封橡胶零件,主要以回转和往复两种运动形式工作。回转运动摩擦部件的特性如下:在相互复盖系数等于1时发生摩擦,沿相对光滑的金属表面进行滑动;在橡胶金属偶件的摩擦区域内产生约1OO～200℃的高温。下述摩擦特性是摩擦过程的决定性参数:在一定试验条件下的磨损强度,摩擦力或摩擦系数和摩擦区域内的接触温度。往复运动的摩擦密封部件完全是另一类使用条件,其特点是摩擦体的复盖系数小,所以发热温度低,一般不超过2—5℃。因
Mechanical rubber parts for the seal of rubber parts, mainly in rotary and reciprocating two forms of work. The characteristics of the rotary motion friction member are as follows: friction occurs at a mutual overlap coefficient equal to 1 and slides along a relatively smooth metal surface; a high temperature of about 100-200C is generated in the friction region of the rubber metal member. The following friction characteristics are the decisive parameters of the friction process: wear strength, friction or friction coefficient under certain test conditions and contact temperature in the friction zone. Reciprocating friction seal is completely another type of conditions of use, which is characterized by the friction coefficient of coverage of small, so the heating temperature is low, generally not more than 2-5 ℃. because