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

Preparation method of Y-shaped hot-pressed three-way pipe fitting

A technology of tee and mold pressing, which is used in mechanical equipment, branch pipelines, pipes, etc., can solve the problems of difficulty in making special molds, high production costs, complex processing processes, etc. Low, reasonable channel streamline effect

Active Publication Date: 2008-12-24
HEBEI HONGRUN NUCLEAR EQUIP SCI & TECH CO LTD
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem of this method is that the processing process is complicated, the production of special molds is difficult, and the production cost is high, so it has not been popularized and applied.

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
  • Preparation method of Y-shaped hot-pressed three-way pipe fitting
  • Preparation method of Y-shaped hot-pressed three-way pipe fitting
  • Preparation method of Y-shaped hot-pressed three-way pipe fitting

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] a. Billet selection: seamless steel pipe material: No. 20 steel; specification: Dn100mm, wall thickness is 10mm;

[0026] b. Hot pressing: heat the billet to 980-1050°C, and press it into a T-shaped tee-shaped billet in a T-shaped tee mold;

[0027] c. Curved shape: heat the hot-pressed T-shaped tee-shaped blank to 950-1050°C, and bend the main pipe on the short-radius elbow mold to make a 90°Y-shaped tee-shaped blank;

[0028] d. Machining: remove the margin at each end of the Y-shaped tee shape blank, and perform groove machining on the port.

Embodiment 2

[0030] a. Billet selection: seamless steel pipe material: 12Cr1MoV steel; specification: Dn1000mm, wall thickness 80mm

[0031] b. Hot pressing: heat the billet to 1000-1100°C, and press it into a T-shaped tee-shaped billet on a T-shaped tee mold;

[0032] c. Curved shape: reheat the hot-pressed T-shaped tee-shaped blank to 1000-1100°C, bend the main pipe on the short-radius elbow mold, and make it into a Y-shaped tee-shaped blank;

[0033] d. Machining: remove the margin at each end of the Y-shaped tee shape blank, and perform groove machining on the port.

Embodiment 3

[0035] a. Billet selection: seamless steel pipe material: 0Cr18Ni9 steel; specification: Dn300mm, wall thickness 30mm;

[0036] b. Hot pressing: heat the billet to 1000-1200°C, and press it into a T-shaped tee-shaped billet in a T-shaped tee mold;

[0037] c. Curved shape: reheat the hot-pressed T-shaped tee-shaped blank to 1100-1200°C, bend the main pipe on a short-radius elbow mold, and make it into a Y-shaped tee-shaped blank;

[0038] d. Machining: remove the margin at each end of the Y-shaped tee shape blank, and perform groove machining on the port.

[0039] The finished Y-shaped tee still needs to undergo various corresponding tests on mechanical properties and metallurgy.

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 producing Y-shape thermal compress three-way, belonging to the metallic tube processing technique. Said method is formed by blank selecting, thermal compressing, bending and machining, etc. wherein, the thermal compressing step comprises: first heating and compressing the blank into T-shape three-way blank; the bending step comprises: heating and bending the main tube of said T-shape blank to form the Y-shape three-way blank. The invention can be used to product the metallic tube Y-shape three-way whose Dn is 100-1000mm and diameter / thickness is less than 14 / . The invention has lower cost, simple process, easy operation and it can use standard three-way and short-radius bent moulds. The invention can reach relative standards as size, allowance, detection and physicochemical test.

Description

technical field [0001] The invention relates to a method for preparing a pipe fitting, in particular to a method for preparing a seamless Y-shaped tee for conveying pressure liquid or gas, and belongs to the technical field of metal pipe fitting processing. Background technique [0002] The seamless tee is an important pipe fitting for pipeline engineering applications in petroleum, chemical, electric power, metallurgy and other industries. It is usually used to transport pressure liquid or gas such as oil, natural gas, gas, water and certain solid materials. As a pipe for transmitting the above-mentioned media, the seamless tee usually has a high working temperature and must bear a certain pressure, so the requirements for its mechanical and physical and chemical properties are relatively high. The manufacturing process of the seamless tee can be realized by cold extrusion for small-diameter pipes, and the large-diameter tee can be completed by forging machining or hot extr...

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): F16L41/00B23P13/00
Inventor 李文亮刘春海刘强张国权张彦波付新建马荣英
Owner HEBEI HONGRUN NUCLEAR EQUIP SCI & TECH CO LTD
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