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Processing method of titanium and titanium alloy pipe with high-brightness inner surface

A technology for titanium alloy tubes and processing methods, which is applied in metal processing equipment, manufacturing tools, turning equipment, etc., and can solve problems such as difficult to find and eliminate on the inner surface

Inactive Publication Date: 2014-12-31
张家港华裕有色金属材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cracks and defects on the outer surface of the pipe are easy to find and solve, but the inner surface is more difficult to find and eliminate

Method used

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  • Processing method of titanium and titanium alloy pipe with high-brightness inner surface
  • Processing method of titanium and titanium alloy pipe with high-brightness inner surface
  • Processing method of titanium and titanium alloy pipe with high-brightness inner surface

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment 1, pipe processing

[0016] The seamless pipe is made of titanium and titanium alloy pipes 5 that have been straightened and have a relatively uniform wall thickness, or titanium and titanium alloy pipes 5 that have been cold-rolled and billeted. The pipes 5 are required to be straight and have uniform wall thickness. Usually, the pipe material 5 to be processed and bored has a diameter of 20-70 mm, a wall thickness of 5.0-10.0 mm, and a length of 1000-3000 mm.

[0017] Process the tool 6 in advance. The pipe 5 is fixed on a CA type common horizontal lathe or similar equipment. Then, use combined tools such as the cutter 6 and the pull rod 7 to bore the inner hole of the pipe material 5 .

[0018] see figure 1 . The pipe material 5 is fixed in the lathe by the chuck 10 and rotates at a certain speed. The pull rod 7 is fixed on the lathe tool rest, the rear end 8 communicates with the cooling lubricant, and the front end is fastened with the processed too...

Embodiment 2

[0022] Embodiment 2, cutter

[0023] The cutter includes the main body and the cutter head, its structure please refer to Figure 2 to Figure 4 . The main body is made of ordinary carbon steel, with a circular tubular structure, and a small hole 1 is opened along its axial center to facilitate the cooling and lubrication of the cooling lubricating fluid during processing. The tool is divided into a head and a tail along its axial direction. The outer diameter of the tube of the head 2 is small, which is convenient to connect with the tie rod; The knife head is welded in the knife groove.

[0024] Knives can take many shapes and can be single, double or multi-ended. Milling out two slits is a two-headed tool, and it can also mill out a single or multiple slits to make a single-headed or multi-headed tool. Single and double-ended tools are available for rough holes, and multi-ended tools are used for fine boring. On the universal tool grinder, the hard alloy cutter head is ...

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Abstract

The invention discloses a processing method of a titanium and titanium alloy pipe. The processing method includes fixing the titanium and titanium alloy pipe in a lathe and rotating the titanium and titanium alloy pipe in a certain speed; fixing one end of a draw bar onto a tool rest of the lathe while fixing a tool at the other end of the draw bar; aligning axial lines of the draw bar, the titanium and titanium alloy pipe and the tool; and enabling the tool rest of the lathe to reciprocate axially, thereby realizing processing the titanium and titanium alloy pipe through rotation of the titanium and titanium alloy pipe and reciprocation of the tool rest of the lathe. The high-precision ultra-long and super-thin seamless titanium and titanium alloy pipe processed by the method has the advantages that the roughness Ra of the inner surface thereof is controlled within the range of 0.35-0.8 micrometer.

Description

technical field [0001] The invention relates to the field of metal processing, in particular to a processing method for removing defects such as cracks and pits on the inner surface during the cold rolling processing of titanium and titanium alloy pipes. Background technique [0002] Titanium and titanium alloys have high chemical activity, high air absorption rate, high deformation resistance, easy rebound, and easy bonding, so their seamless pipes are more difficult to process than ordinary metals such as copper, steel, aluminum, and nickel. For ultra-thin and ultra-long titanium and titanium alloy seamless pipes that require high dimensional accuracy, their processing and manufacturing are more difficult, and the yield is extremely low. [0003] Titanium and titanium alloy seamless tube blanks produced by cross-rolling perforation or extrusion methods have rough inner and outer surfaces, deep longitudinal grooves, and many defects. In the process of seamless pipe process...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23B35/00B23B27/10
Inventor 路金林路开朱宝永
Owner 张家港华裕有色金属材料有限公司