Four-roller mandrel pipe mill
A technology of continuous rolling and tube mills, which is applied in the direction of metal rolling stands, metal rolling mill stands, and driving devices for metal rolling mills, and can solve problems such as inability to achieve roll gap adjustment, strict market demand, and inability to apply , to achieve the effects of good control accuracy consistency, expanded specification range, and convenient roll replacement
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[0016] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0017] As shown in the figure, the four-roll continuous pipe rolling mill in this embodiment includes a tunnel-type arch 1 and multiple sets of rolling stands 2 arranged in sequence along the central axis of the tunnel-type arch 1, and each group of rolling stands 2 There are four sets of roll assembly 3, each roll assembly 3 is respectively connected to a set of roll gap adjustment devices 4 for adjusting the roll gap between the roll assemblies 3, and the rolling stand 2 is also provided with a rolling stand 2 A roller changing device that moves back and forth along the central axis of the tunnel arch 1; wherein the roll gap adjustment device 4 is fixed on the tunnel arch 1, so that the roll gap adjustment device 4 has uniform rigidity in the radial direction of the tunnel arch 1, The rotation angle of the roll gap adjusting device 4 can b...
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