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gr.9 tube billet manufacturing process

A manufacturing process and tube billet technology, which is applied in the field of Gr.9 tube billet manufacturing process, can solve the problems of low processing yield, high heating temperature, and many processing passes, so as to reduce processing passes, improve product yield, Good metal plasticity

Inactive Publication Date: 2011-12-21
浙江五环钛业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, Gr.9 tube billet is generally prepared by cross-rolling and piercing method in the market, which has high heating temperature, severe oxygen and hydrogen absorption on the surface, low yield of subsequent processing, many processing passes, and high scrap rate.

Method used

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Embodiment Construction

[0006] Below in conjunction with embodiment the present invention is described in further detail:

[0007] A Gr.9 pipe billet manufacturing process, including forging, peeling, drilling and extrusion piercing, is characterized in that: the steps of extrusion piercing are: billet preparation, drilling, sheathing, heating and extrusion, wherein the billet preparation In the step, the outer diameter of the blank is required to be ∮125mm-∮124.7mm, the length is not greater than 475mm, the roughness of the inner hole of the outer diameter is 1.6, and the outer round chamfer is 45°×3mm; the inner hole is required to be ∮37.5mm in the drilling step, and the roughness The degree is 3.2, the concentricity of the inner and outer circles is less than 0.5mm, and the chamfer of the inner circle is 45°×3mm; the sheathing step includes the outer sheath and the inner sheath, the thickness of the outer sheath copper plate is 0.8mm, the length is 495mm, and the width is 400mm. The length of the...

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Abstract

The invention discloses a Gr.9 tube billet manufacturing process, including forging, peeling, drilling and extrusion piercing, wherein the steps of extrusion piercing are: blank preparation, drilling, sheathing, heating and extrusion. The surface of the tube blank is completely covered with copper plates, so that the tube blank absorbs very little oxygen and hydrogen, and the size of the tube blank and the size of the finished tube can be controlled at the most appropriate ratio, reducing the number of processing passes. The amount of deformation is large, and the grains are more fully broken. Compared with the cross-rolling piercing, the deformation of each part is more uniform, which makes the metal plasticity better and is more conducive to processing. There is almost no surface oxidation, and the surface treatment is reduced to improve the product yield.

Description

technical field [0001] The invention relates to a tube blank manufacturing process, in particular to a Gr.9 tube blank manufacturing process. Background technique [0002] At present, Gr.9 tube blanks are generally prepared by cross-rolling and piercing, which has high heating temperature, severe oxygen and hydrogen absorption on the surface, low yield of subsequent processing, many processing passes, and high scrap rate. Contents of the invention [0003] Aiming at the technical defects existing in the prior art, the present invention provides a Gr.9 tube blank that can minimize the degree of oxygen and hydrogen absorption of the tube blank, has fewer processing passes, a high subsequent processing yield, and a low scrap rate. Craftsmanship. [0004] The present invention adopts the following technical solutions to achieve its purpose: a Gr.9 tube blank manufacturing process, including forging, peeling, drilling and extrusion perforation, is characterized in that: the st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21C23/22
Inventor 胡乐煊
Owner 浙江五环钛业股份有限公司
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