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The low temperature causes the hydraulic oil to shrink itself, especially the hydraulic oil in the closed cavity, which reduces the pressure and even generates negative pressure;
High temperature is more likely to generate air bubbles, and the air bubbles destroy the lubricating oil film, causing sintering or increasing wear on the friction surface;
The four-column press is a three-beam four-column structure or a two-beam four-column structure, which is optimized and designed by a computer, which is simple, economical, and applicable. The hydraulic control valve adopts a high-quality valve imported from abroad, with reliable action, long service life, and a small hydraulic shock. Independent electrical control system, reliable work, intuitive action, easy maintenance.
