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Rotary-press processing method and device of long steel pipe with tensile

The technology of a processing device and processing method is applied in the field of spinning processing of long steel pipes with tension and its devices, which can solve various problems and achieve the effect of convenient operation and simple structure

Inactive Publication Date: 2010-07-07
江晓东
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the above two patents involve the processing of tubular metal parts, they are both aimed at specific products, and their processing methods and device features are completely different from the technical features of the patent application

Method used

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  • Rotary-press processing method and device of long steel pipe with tensile
  • Rotary-press processing method and device of long steel pipe with tensile
  • Rotary-press processing method and device of long steel pipe with tensile

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Embodiment Construction

[0021] like Figure 1 ~ Figure 3 As shown, this long steel pipe spinning device with tension is composed of three frames installed on the same axis, wherein the tail frame 14 provides the fixed mandrel force, the middle frame 5 provides the rotation force, and the head frame 11 provides traction. Tension force also includes the processed steel pipe 2 and the mandrel 3 arranged inside the steel pipe 2, the outer rotating frame 4, the rotary wheel 6, and the traction chuck 10, wherein the outer rotating frame 4 is installed on the middle frame 5 of the equipment and Relying on the connection between the bearing 7 and the center frame 5, three rollers 6 with the same diameter are installed on the outer wheel frame 4 in a 120° distribution. Axis rotation, can also rotate along its own axis, the outer rotary wheel frame 4 rotates along the axis of the middle frame 5 under the power drive together with the rotary wheel 6 in the middle frame 5, and the steel pipe 2 that is to be thin...

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Abstract

The invention relates to rotary-press processing method and device of a long steel pipe with tensile, wherein the device comprises a steel pipe and a mandrel in the steel pipe. The device is characterized in that the surface of the steel pipe is ground by a rotary wheel so as to thin the wall of the steel pipe, wherein the rotary wheel rounds concentrically around the steel pipe, while the steel pipe and the mandrel in the steel pipe do not rotate; and when the rotary wheel runs around the steel pipe, drawing tension is applied to one end of the steel pipe so that when passing through a gap between the rotary wheel and the mandrel, the steel pipe can be continuously ground to be thin by the rotating rotary wheel, thereby accomplishing the cold machining process of the steel pipe. The invention improves the mechanical structure and the operating mode of the traditional rotary wheel rotary-press device that rotary-press processing can only be carried out by rotating the steel pipe, the operating mode is changed by the mode that the steel pipe does not move and the rotary wheel makes circular motion, and meanwhile, under the action of tension drawing, longer steel pipes can be processed according to requirements on products. The device is characterized by simple structure, convenient operation, obvious effect and convenient installation on the traditional drawing machine and can carry out both rotary pressing on the long steel pipe and cold drawing on the steel pipe.

Description

technical field [0001] The invention relates to a long spinning steel pipe processing method and a device thereof, in particular to a tension-bearing long steel pipe spinning processing method and device of a large-diameter thin-walled long steel pipe, which belongs to the pressure processing technology of metal pipes. Background technique [0002] As we all know, there are three main methods of processing large-diameter thin-walled steel pipes: cold drawing, cold rolling and spinning. The cold drawing method can produce pipes exceeding 10 meters, but it is difficult to control configuration tolerances such as wall thickness uniformity, roundness and straightness. Cold rolling can process metals that are difficult to form, and has high precision, but the efficiency is low, and the diameter of the steel pipe should not be too large, currently around 200mm. The spinning processing method is suitable for steel pipe products with large diameter and strict configuration toleranc...

Claims

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Application Information

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IPC IPC(8): B21D22/14
Inventor 江晓东
Owner 江晓东
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