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

Multi-curvature forming method for stainless steel cylinder

A molding method and multi-curvature technology, applied in the field of manufacturing stainless steel cylinders

Active Publication Date: 2015-02-11
SHANGHAI TONGHUA STAINLESS STEEL PRESSURE VESSEL ENG
View PDF6 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the existing technology, the present invention proposes a multi-curvature progressive forming method for stainless steel cylinders according to the cylinder rolling forming mechanism, in order to save materials, simplify the process, reduce deformation, and solve the problem of three-roll plate rolling machine rolling. The purpose of the technical problems of the stainless steel cylinder

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
  • Multi-curvature forming method for stainless steel cylinder
  • Multi-curvature forming method for stainless steel cylinder
  • Multi-curvature forming method for stainless steel cylinder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] The concrete mode of implementing the present invention is carried out according to the following steps:

[0023] 1. Cut the material according to the unfolded length of the middle diameter of the cylinder to be rolled: determine the cylinder to be rolled 01 ( figure 1 ) parameters: inner diameter Φ, length L, wall thickness δ, middle diameter D = inner diameter Φ + wall thickness δ; cylindrical sheet 3 ( figure 2 ) with the expanded length πD of the cylinder to cut the material, without reserve length; process the welding groove 2 around the sheet metal by mechanical processing method ( figure 2 ), to ensure the quality of the groove to improve the welding quality;

[0024] 2. The first curvature arc rolling forming: put the cylindrical sheet on the upper roller 6 of the rolling machine ( image 3 ) and lower rollers 4, 5 ( image 3 ), the big end of the welding groove 2 faces the upper roll of the bending machine ( image 3 ); Cylindrical sheet 3 ( image 3 ) o...

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 multi-curvature forming method for a stainless steel cylinder. The method is characterized by comprising the following steps: performing scribing and blanking according to the developed length of the medium diameter of a cylinder to be wound; machining peripheral welding grooves of a plate; rolling-forming a first-curvature circular arc, namely reserving a straight section, not to be wound for the formation of a circular arc, with a width B of 200 to 600 mm at each of the two ends of the cylindrical plate, and bending and winding the middle part of the cylindrical plate into a large circular arc with a curvature radius R of more than or equal to 0.5 Phi to form the first-curvature circular arc of the cylinder; rolling-forming second-curvature circular arcs, namely rolling the parts between the roots of the straight sections with the widths B of 200 to 600 mm and the large circular arc into circular arcs with curvature radiuses r of 0.2 to 0.5 Phi to form second-curvature circular arcs; rolling transition parts between the second-curvature circular arcs and the first-curvature circular arc into smooth transition; performing rolling until the grooves 2 in the two ends of the straight sections get close to each other; performing longitudinal seam assembly and welding on the cylinder, placing the cylindrical body at a horizontal position, and welding longitudinal seams; performing roundness correction on the cylinder after welding.

Description

technical field [0001] The invention relates to the manufacture of stainless steel pressure vessels, especially the manufacture method of stainless steel cylinders. Background technique [0002] Stainless steel pressure vessels have developed rapidly in recent years, which has played a positive role in the upgrading of production technology and product quality in the fields of medicine, chemical industry, food, and beverages. [0003] Austenitic stainless steel is commonly used for stainless steel pressure vessels. This material has high ductility and allows large deformation during the forming process. However, due to its high hardness and obvious cold hardening characteristics, the deformation is too large and the number of strains is too high. Too much can cause breakage. Secondly, the defects such as scratches, pits, pits and heavy skin on the surface of stainless steel are amplified with the deformation of the sheet during the rolling process, and even directly lead to...

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
IPC IPC(8): B23P15/00B21D5/14
CPCB21D5/14
Inventor 吴新华
Owner SHANGHAI TONGHUA STAINLESS STEEL PRESSURE VESSEL ENG
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