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

Technologic process and special apparatus for rolling seamless steel pipe

A technology of seamless steel pipe and process, applied in the field of seamless steel pipe rolling, can solve the problems of only small batch production and narrow specification range, and achieve the effect of expanding product specification range and highlighting substantive features

Inactive Publication Date: 2009-07-22
烟台鲁宝钢管有限责任公司
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The invention mainly solves the problem that the existing seamless steel pipes have a relatively narrow range of product specifications and can only meet small batch production

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
  • Technologic process and special apparatus for rolling seamless steel pipe
  • Technologic process and special apparatus for rolling seamless steel pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1, with reference to Figures 1, 2, and 3, the tube blank is heated to the required temperature by the tube blank heating furnace 1, and then the solid tube blank is pierced into a hollow capillary tube by the piercer 2, and the tube is expanded by two-roll cross rolling The machine 6 reduces the capillary wall and expands the diameter, and the diameter of the steel pipe can be enlarged by 15 to 60% according to the needs, and then the steel pipe is leveled by the leveling machine 4 to further improve the inner and outer surface quality and wall thickness accuracy of the steel pipe, and then the micro tension sizing machine 5. Round the steel pipe to obtain the seamless steel pipe with the required diameter.

[0021] The above-mentioned two-roll cross rolling pipe expander 6 is composed of two rolls 7, a plug 8 and two guide plates 9, two guide plates 9 are installed between the two rolls 7, and the plug 8 is installed in the center of the two guide plates 9; ...

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

No PUM Login to View More

Abstract

The invention discloses a rolling process and special equipment for a seamless steel pipe. The process steps include: heating in a heating furnace, piercing with a piercer, expansion with a two-roll cross-rolling expander, smoothing with a tempering machine, (slight tension) setting sizing machine; the two-roll cross-rolling pipe expander used is composed of two rolls (7), a plug (8) and two guide plates (9), the equipment investment is low, and it can meet the wide range of specifications, Larger batch production needs.

Description

Technical field: [0001] The invention relates to the technical field of rolling seamless steel pipes, in particular to a rolling process and special equipment for seamless steel pipes, that is, to produce seamless steel pipes by expanding the diameter of a two-roll cross-rolling unit. Background technique: [0002] At present, in the production of seamless steel pipes, the two-roll cross-rolling unit is an important production method. Its technological process is tube billet: Heating furnace heating - piercing machine piercing - two-roll cross rolling pipe mill rolling - skin pass mill leveling - (micro tension) sizing machine sizing; in the above process, the heating furnace The role of the tube is to heat the tube to a suitable temperature for deformation; the role of the piercer is to pierce the solid tube into a hollow capillary; the role of the two-roll cross-rolling mill is to reduce the wall extension; Further precision rolling to improve the quality of the inner and...

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 Patents(China)
IPC IPC(8): B21B19/02B21B37/78
Inventor 王旭午
Owner 烟台鲁宝钢管有限责任公司
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