Heat-push bending method for producing pipe fittings with equal diameters and equal wall thicknesses

A production method and a technology of equal wall thickness, which is applied in the field of hot push bending production of wall thickness pipe fittings, can solve the problems of easy concave deformation, poor appearance quality, and inability to take out the inner core at the two ports of the elbow, and achieves small size deviation, Beautiful appearance and the effect of improving the overall stress condition

Inactive Publication Date: 2012-01-18
ZHONGNAN RED CULTURE GRP CO LTD
View PDF8 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Compared with the hot push process, the appearance quality of stamping is not as good as the former, especially the two ends of the elbow are prone to sag deformation, and the inner core cannot be taken out; the out...

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
  • Heat-push bending method for producing pipe fittings with equal diameters and equal wall thicknesses
  • Heat-push bending method for producing pipe fittings with equal diameters and equal wall thicknesses
  • Heat-push bending method for producing pipe fittings with equal diameters and equal wall thicknesses

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0024] Example 1. Production of elbows with pipe fitting specifications of φ508*50, 1.5D

[0025] 1. Cut the elbow pipe fitting blank with a steel pipe with a specification of φ508*50, so that the two ends of the elbow pipe fitting blank are obliquely shaped, and the length of the long section of the elbow pipe fitting blank is the outer arc length of the finished elbow pipe fitting to be produced , The length of the short section of the elbow pipe fitting blank is the inner arc length of the finished elbow pipe fitting to be produced; the length of the long section is 1600mm, and the length of the short section is 900mm;

[0026] (2) Put the cut elbow pipe blank into the heating furnace, and heat the elbow pipe blank to 950°C;

[0027] (3) Put the heated elbow pipe fitting blank into the hot push bending device of equal-diameter and equal-wall-thick pipe fittings to push the pipe fitting. Specifically, put the heated elbow pipe fitting blank into the combination mold 4 first,...

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 heat-push bending method for producing pipe fittings with equal diameters and equal wall thicknesses, which comprises the following steps of: (1) cutting an elbow pipe fitting billet so as to enable two ends of the elbow pipe fitting billet to be of an inclined opening shape respectively, the length of a long segment of the elbow pipe fitting billet to be the length of an outer arc of an elbow pipe fitting product needed to be produced, and the length of a short segment of the elbow pipe fitting billet to be the length of an inner arc of an elbow pipe fitting product needed to be produced; (2) putting the cut elbow pipe fitting billet into a heating furnace, and heating the elbow pipe fitting billet to be 900-1000 DEG C; and (3) putting the heated elbow pipe fitting billet into a heat-push bending device for the pipe fittings with the equal diameters and the equal wall thicknesses, and carrying out pipe fitting pushing to obtain the finished pipe fittings with the equal diameters and the equal wall thicknesses. The invention has the advantages that: according to the method, the produced pipe fittings have equal wall thicknesses without being thinned, small dimensional deviation and attractive appearances.

Description

technical field [0001] The invention relates to a production method of pipe fittings of equal diameter and wall thickness, in particular to a production method of hot push-bending pipe fittings of equal diameter and wall thickness. Background technique [0002] At present, the forming methods of elbows mainly include push and stamping, and push is divided into cold extrusion and hot push. [0003] 1. The forming process of the cold extrusion elbow is to use a special elbow hydraulic forming machine, put the tube blank into the combination mold, and under the push of the push rod, the tube blank moves along the gap reserved between the inner mold and the outer mold. After the forming process is completed, the formed pipe is finally taken out by the demoulding device. [0004] Since each actuator of the elbow hydroforming machine is in the same frame, the size of the mechanism is small, and the thrust is also small, so the diameter of the elbow produced by it is relatively sm...

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): B21D9/12B21D9/18
Inventor 陈少忠潘和清
Owner ZHONGNAN RED CULTURE GRP CO LTD
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