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A liquid-filled drawing device and method for a miniature thin-walled metal tube

A technology for drawing devices and metal tubes, applied in the direction of wire drawing dies, etc., can solve problems such as the difficulty of taking out the mandrel, and achieve the effects of suppressing cracks, improving production efficiency, and improving surface quality

Active Publication Date: 2021-02-12
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

At the same time, the process of feeding high-pressure liquid into the micro metal tube for drawing can reduce the generation of cracks inside the micro metal tube, suppress the increase of wall thickness and wrinkling, and improve the forming limit. The problem that the mandrel is difficult to take out during the drawing process of the metal tube

Method used

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  • A liquid-filled drawing device and method for a miniature thin-walled metal tube
  • A liquid-filled drawing device and method for a miniature thin-walled metal tube
  • A liquid-filled drawing device and method for a miniature thin-walled metal tube

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Embodiment Construction

[0026] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0027] see figure 1 , figure 2 and image 3 , the liquid-filled drawing device of the miniature thin-walled metal tube provided by the present invention, when the said liquid-filled drawing device is drawing the miniature thin-walled metal tube, the inside of the miniature thin-walled metal tube is filled with pressure liquid to replace the core Shaft to improve the forming quality and form...

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Abstract

The invention belongs to the technical field related to the drawing of miniature thin-walled metal tubes, and discloses a liquid-filled drawing device and method for miniature thin-walled metal tubes. The liquid-filled drawing device includes a forming component and a pressure control component, and the forming component is symmetrical Structure, which is used to fix the miniature thin-walled metal tube blank and guide it during the drawing process; the two ends of the forming component are respectively connected to the pressure control component through the liquid pipeline; the pressure control component is used to provide pressure liquid through the liquid pipeline For forming components, and used to control the pressure value of the pressure liquid in the micro thin-walled metal tube; The pulling part and the floating part are respectively used for fixing the two ends of the miniature thin-walled metal tube blank, and the miniature thin-walled metal tube blank is connected with the liquid pipeline. The invention can reduce the generation of cracks in drawing, improve the forming limit, improve the efficiency and quality, and reduce the cost.

Description

technical field [0001] The invention belongs to the technical field related to the drawing of miniature thin-walled metal tubes, and more particularly relates to a liquid-filled drawing device and method for miniature thin-walled metal tubes. Background technique [0002] Micro thin-walled metal tubes are now widely used in heat exchange components, biomedical, electronic devices, etc., and the demand is increasing. The traditional pipe drawing process mainly includes free drawing, fixed core drawing, belt core drawing and floating core drawing. [0003] In the processing of micro thin-walled metal tubes, since the mandrel is difficult to process and difficult to take out after drawing, fixed core drawing and cored drawing cannot process longer microtubes, while floating core drawing is easy to cause The drawing process is unstable and breaks, so fixed core drawing, strip core drawing and floating core drawing are not suitable for the drawing and forming of thin-walled micr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21C1/22B21C1/34B21C3/14B21C5/00B21C3/10
CPCB21C1/22B21C1/34B21C3/10B21C3/14B21C5/003
Inventor 邓磊张海栋杜飞王新云金俊松
Owner HUAZHONG UNIV OF SCI & TECH
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