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对形状复杂的高压和超高压设备(如压裂泵阀箱等)进行自增强处理(又称自紧、超应变处理),是提高弹性承载能力和疲劳寿命最有效的方法之一。目前应用较广泛、工艺较成熟的是静液压自增强法(美国一些压裂
One of the most effective ways to increase the elastic load capacity and fatigue life is to self-reinforce (also known as self-tightening and over-straightening) of complex high-pressure and extra-high pressure equipment such as fracturing valve boxes. Currently more widely used, more mature technology is hydrostatic self-enhancement method (some fracturing in the United States