Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Process technique of high-strength titanium alloy pipes

A processing technology, titanium alloy technology, applied in metal processing equipment, metal rolling, manufacturing tools, etc., can solve the problems of difficult to guarantee the quality of extruded tube blanks, unfavorable material properties, low material utilization rate, etc., and achieve high yield , low production cost, bright surface effect

Inactive Publication Date: 2008-05-14
GENERAL RESEARCH INSTITUTE FOR NONFERROUS METALS BEIJNG
View PDF0 Cites 26 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The technical difficulty lies in: if the hot extrusion method is used to prepare high-strength tube blanks, the deformation resistance is large and the thermal processing temperature is high. If the traditional copper-clad extrusion is used, due to the eutectic reaction of titanium and copper at about 880 ° C, the formation of Eutectic brittle phase, the quality of the extruded tube is difficult to guarantee
At the same time, for larger-sized extrusion billets, larger-tonnage extruders are needed for extrusion, and general units do not have this kind of equipment; in addition, forging rods are used to make deep holes to prepare tube blanks. Due to the high price of titanium alloys, The material utilization rate of this method is low, and the processing rate of the material is small, which is not conducive to improving the performance of the material

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Process technique of high-strength titanium alloy pipes
  • Process technique of high-strength titanium alloy pipes
  • Process technique of high-strength titanium alloy pipes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] The present invention will be further described in detail below with reference to the drawings and specific embodiments.

[0016] For the developed TB2 titanium alloy with high room temperature strength and deformation resistance, pipes with an inner diameter of 40-30 mm and a wall thickness of 2-5 mm are processed, and the pipes are processed by cross-rolling, piercing and cold rolling. The specific operation steps are as follows:

[0017] 1) Referring to Figure 1 and Figure 5, the TB2 alloy vacuum secondary melting ingot with a diameter of 380mm is first subjected to two fires at 1150°C and 1110°C for blank forging, and forged into a billet with a cross-section of 120×120mm. Then heat the forged bar to 980°C, keep it warm for 30-50 minutes, and then hot-roll it into a square bar with a cross-section of 55×55mm, and the hot-rolled deformation is 79%;

[0018] 2) Referring to Figure 2 and Figure 5, the hot-rolled bar is finished into a φ52×800mm bar, heated to 980°C, ke...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
Login to View More

Abstract

The invention relates to a processing technology of high-strength titanium alloy tubes, belonging to the material processing technical field. The processing technology follows the steps below: first, making the vacuum secondary smelting TB2 alloy ingot into 380mm diameter through cogging-forging and hot-rolling, getting a TB2 rolling rod; second, processing the TB2 rolling rod to obtain 52 mm to 54 mm smooth rod in Diameter by bar drawing machine, heating up to 950 to 1000 degree C, keeping the temperature for 30 to 50 minute, rotary piercing on the two-roller rotary piercing machines, obtaining a tube blank of outside diameter from 55mm to 58mm, insid diameter from 39mm to 42 mm; third, make the rotary piercing tube blank process heating up to 770 to 800 degree C, keeping the temperature for 30minute to 50minute, air-cooled annealing and sandblasting, removal of the oxidation scale of the internal and external surface at the process of acid washing, obtaining a cold rolling tube blank; fourth, processing the cold-rolled tube blank with 6 pass cold rolling of the LD60 cold-rolling tube mill, the intermediate annealing temperature is from 760 to 790 degree C, obtaining a finished tube.

Description

technical field [0001] The invention belongs to the field of material processing, in particular to a processing technology for high-strength titanium alloy pipes. Background technique [0002] It is quite difficult to process titanium alloy pipes with high room temperature strength and deformation resistance, medium pipe diameter, certain length and wall thickness, considering the pipe processing technology. The technical difficulty lies in: if the hot extrusion method is used to prepare high-strength tube blanks, the deformation resistance is large and the thermal processing temperature is high. If the traditional copper-clad extrusion is used, due to the eutectic reaction of titanium and copper at about 880 ° C, the formation of The eutectic brittle phase makes it difficult to guarantee the quality of the extruded tube billet. At the same time, for larger-sized extrusion billets, larger-tonnage extruders are needed for extrusion, and general units do not have this kind of...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B21B19/04B21B19/06B21B37/78C21D9/70C21D9/08C21D11/00
Inventor 高莹胡捷李德富杨宏伟付鑫
Owner GENERAL RESEARCH INSTITUTE FOR NONFERROUS METALS BEIJNG
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com