Method for simultaneously rolling and expanding two trapezoid-cross-section flange ring forge pieces

A trapezoidal section, ring forging technology, applied in gas flame welding equipment, metal rolling, manufacturing tools, etc., can solve the problems of low utilization rate of equipment, low utilization rate of materials, low production efficiency, etc., to save raw materials and improve organization. and performance, the effect of improving production efficiency

Active Publication Date: 2012-08-01
SHANDONG JIANZHU UNIV
View PDF6 Cites 27 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main problems of this process for producing rings with trapezoidal cross-sections are: (1) large machining allowance and low material utilization rate; (2) low production efficiency and high labor intensity; (3) rings need to be heated repeatedly, resulting in high energy consumption; (4) High production cost; (5) Only one flange can be manufactured at a time, and the utilization rate of equipment is low

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
  • Method for simultaneously rolling and expanding two trapezoid-cross-section flange ring forge pieces
  • Method for simultaneously rolling and expanding two trapezoid-cross-section flange ring forge pieces
  • Method for simultaneously rolling and expanding two trapezoid-cross-section flange ring forge pieces

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The method of rolling and expanding two trapezoidal cross-section flange ring forgings at the same time. The forging material is Q345E steel. The dimension of the trapezoidal cross-section flange ring forging required to be rolled is: the maximum outer diameter of the ring forging is D b 4000mm, minimum outer diameter D s is 3900mm, the minimum diameter of the inner hole of the ring forging is d s is 3600mm, the maximum diameter of the ring forging inner hole d b is 3700mm, and the axial dimension B of the ring forging is 200mm. The steps are as follows:

[0030] (1) Cutting the material, sawing the cylindrical steel billet into the material section; the length of the material section is L=3.5B=750mm, B is the axial height of the trapezoidal cross-section flange ring forging, and the diameter of the material section is based on the ring forging The condition that the volume is equal to the volume of the feed section is determined to be 1070mm.

[0031] (2) Slowly he...

Embodiment 2

[0036] The method of rolling and expanding two trapezoidal cross-section flange ring forgings at the same time. The forging material is Q345E steel. The dimension of the trapezoidal cross-section flange ring forging required to be rolled is: the maximum outer diameter of the ring forging is D b 3200mm, minimum outer diameter D s is 3100mm, the minimum diameter of the inner hole of the ring forging is d s is 2800mm, the maximum diameter of the ring forging inner hole d b is 2900mm, and the axial dimension B of the ring forging is 150mm. The steps are as follows:

[0037] (1) blanking, sawing the cylindrical steel billet into material sections; the length of the material section is L=4B=600mm, B is the axial height of the trapezoidal cross-section flange ring forging, and the diameter of the material section is based on the volume of the ring forging The condition equal to the volume of the feed section is determined to be 800mm.

[0038] (2) Slowly heat the above material s...

Embodiment 3

[0043] The method of rolling and expanding two trapezoidal cross-section flange ring forgings at the same time. The forging material is Q345E steel. The dimension of the trapezoidal cross-section flange ring forging required to be rolled is: the maximum outer diameter of the ring forging is D b 2500mm, minimum outer diameter D s is 2450mm, the minimum diameter of the inner hole of the ring forging is d s is 2200mm, the maximum diameter of the inner hole of the ring forging d b is 2250mm, and the axial dimension B of the ring forging is 140mm. The steps are as follows:

[0044] (1) blanking, sawing the cylindrical steel billet into material sections; the length of the material section is L=4B=640mm, B is the axial height of the trapezoidal cross-section flange ring forging, and the diameter of the material section is based on the volume of the ring forging The condition equal to the volume of the feed section is determined to be 630mm.

[0045] (2) Slowly heat the above mat...

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 relates to a method for simultaneously rolling and expanding two trapezoid-cross-section flange ring forge pieces. The method comprises cutting a cylindrical billet into material sections; heating the material sections from room temperature to austenitizing temperature evenly and keeping warm; then heading, punching and chambering the material sections to be manufactured into ring piece blanks to be rolled and expanded; baking again and heating the obtained blanks to reach target temperature and keep warm; placing the obtained blanks into a hole mould of a ring rolling machine formed by an irregular-shaped driving roller and an irregular-shaped core roller to be rolled, expanded and formed; achieving the ring forge pieces which is narrow at two ends and wide in middle and with the axial height as twice as the height of a target trapezoid flange; cutting the ring forge pieces from the middle of the axial height, symmetrically dividing a work piece into two parts to obtain two trapezoid-cross-section flange ring forge pieces; and finally turning the forge pieces into end product flanges. The method for simultaneously rolling and expanding two trapezoid-cross-section flange ring forge pieces is high in production efficiency, energy-saving, environmental-friendly and capable of improving utilization rate of raw materials and quality of products.

Description

technical field [0001] The invention relates to a method for rolling and forming an annular flange, in particular to a method for simultaneously rolling two flange ring forgings with trapezoidal cross-sections. Background technique [0002] With the advancement of science and technology and the development of the economy, the demand for rings, especially large rings, is increasing in industrial production. In some large equipment, rings have become key components that affect performance indicators. At present, various countries in the world have conducted extensive research on the production and processing technology of ring parts. The size range of ring parts that can be manufactured is continuously expanding, the cross-sectional shape is more complex, the choice of materials is increasing, and the requirements for manufacturing processes are getting higher and higher. [0003] The production of traditional ring parts, especially large ring parts such as wind power flanges,...

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): B21H1/06B21J1/00B21J5/08B21J5/10B23K7/00
Inventor 景财年甘洋洋蔡元兴徐淑波刘敬广于承雪
Owner SHANDONG JIANZHU UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap