Method for measuring and adjusting concentricity of extrusion die applied to steel pipe hot extrusion machine

Abstract

The invention relates to a method for measuring and adjusting concentricity of an extrusion die applied to a steel pipe hot extrusion machine. The method for measuring and adjusting the concentricityof the extrusion die applied to the steel pipe hot extrusion machine comprises an extrusion die, side guide plates and bottom guide plates, wherein the extrusion die, the side guide plates and the bottom guide plates are arranged on a steel pipe hot extrusion machine assembly. When the extrusion die is first installed on the steel pipe hot extrusion machine assembly, the side clearance between theextrusion die and the side guide plates and the bottom clearance between the extrusion die and the bottom guide plates are measured as reference values. When the eccentricity of a finished steel pipeis detected, the side clearance and the bottom clearance of the extrusion die are measured, and a value is compared with the reference value to obtain an adjustment value required for adjusting the extrusion die to the central position. Finally, the side guide plate and the bottom guide plate are replaced or adjusted to restore the thickness to the original state. According to the method for measuring and adjusting the concentricity of the extrusion die applied to the steel pipe hot extrusion machine, the concentricity of the extrusion die can be measured simply, practically and conveniently,and the concentricity of the extrusion die of the extruder can be adjusted. The method for measuring and adjusting the concentricity of the extrusion die applied to the steel pipe hot extrusion machine can restore the functional precision of steel pipe hot extrusion machine equipment and meet the requirements of the production process.

Description

technical field [0001] The invention relates to a method for measuring and adjusting components, in particular to a method for measuring and adjusting the concentricity of an extrusion die of a steel pipe hot extrusion machine in the steel pipe hot extrusion production process in the iron and steel metallurgy industry. Background technique [0002] At present, relatively high-end seamless steel pipes are often produced in various iron and steel metallurgical enterprises, such as seamless steel pipes for nuclear power and oil well pipes for oil drilling. The required mechanical properties can only be achieved by forging, reaming, extrusion and other processes and production technologies. [0003] Take the 60MN steel pipe hot extrusion machine as an example. This kind of steel pipe hot extrusion machine is the key process equipment in the production process of steel pipe hot extrusion. It is mainly composed of the following components: back beam, extrusion beam, mandrel beam, ...

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Problems solved by technology

[0011] As the production continued, the on-site operators found that the relative movement between the guide plate on the movable frame of the extrusion die part and the guide plate on the fixed base and the front beam would cause the wear of the guide plate. The extrusion of the 60MN steel pipe hot extrusion machine The concentricity deviation of the mold parts will increase, resulting in a decrease in the overall function and accuracy of the equipment, which cannot meet the requirements of the production process, making the produced steel pipe wall thickness tolerance exceed the standard, and the quality is out of control

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