Benzene hydrogenation engineering heat resistant steel pipeline welding method

A welding method and heat-resistant steel technology, applied in welding equipment, metal processing equipment, manufacturing tools, etc., can solve the problems of complicated manufacturing process, high manufacturing cost, and inconvenient welding, so as to reduce construction cost, avoid residual stress, and design reasonable effect

Active Publication Date: 2012-10-31
MCC5 GROUP CORP SHANGHAI
View PDF6 Cites 18 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the domestic construction or under construction is still in the irregular stage, there are many unscientific and unreasonable places, the production process is complicated and the production cost is high
[0003] Therefore known benzene hydrogenation engineering heat-resistant steel pipeline welding exists above-mentioned inconvenience and problem

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
  • Benzene hydrogenation engineering heat resistant steel pipeline welding method
  • Benzene hydrogenation engineering heat resistant steel pipeline welding method
  • Benzene hydrogenation engineering heat resistant steel pipeline welding method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] The heat-resistant steel pipeline welding method for benzene hydrogenation engineering of the present invention uses a TIG pulse welder to weld 12Cr2Mo brand pearlite heat-resistant steel by manual tungsten argon arc welding, and the supply state of the heat-resistant steel is 730-750°C Fire, is characterized in that comprising the steps of:

[0051] figure 1 It is a schematic diagram of the pipe-to-pipe butt joint groove structure according to the embodiment of the present invention, figure 2 It is a schematic diagram of the groove angle of the pipe-to-pipe butt joint of the embodiment of the present invention, and the pipe-to-pipe butt joint welding of the heat-resistant steel pipeline is performed.

[0052] a. Pipe section cutting and bevel processing

[0053] The pipe section is cut by plasma arc or flame, and the cut part is left with a machining allowance to remove the hardened layer and overheated metal; the diameter of the welded pipe section is ?32-273mm, an...

Embodiment 2

[0074] image 3 It is a schematic diagram of the groove angle of the pipe and the flange joint of the embodiment of the present invention, and the pipe and the flange joint of the heat-resistant steel pipeline are welded by the saddle joint. Plasma arc or mechanical cutting is used, and the oxidation pollution layer is removed mechanically at the welding groove and the near seam area; the branch pipe joints with a pipe wall thickness of more than 3mm are processed by machining groove α=45+5°, p=0, b= 2.0~2.4mm.

[0075] Figure 5 It is a schematic diagram of the protection device for the welding joint between the pipe and the flange in the embodiment of the present invention, and the protection device with the flange joint is provided with a blind plate on the flange and partial filling of argon in the pipe. Other technical features of this embodiment are the same as those of Embodiment 1.

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

PropertyMeasurementUnit
thicknessaaaaaaaaaa
Login to view more

Abstract

The invention provides a benzene hydrogenation engineering heat resistant steel pipeline welding method. By using a TIG pulsating welder, a pearlite heat resistant steel with a band number of 12 Cr2Mo is welded through manual argon tungsten-arc welding; the supply state of the heat resistant steel is that the heat resistant steel is annealed at 730-750 DEG C; and the welding method is characterized by comprising the following steps: (a) pipe section cutting and groove preparation, (b) providing an argon shield device, (c) preheating before welding, (d) welding and (e) heat treatment after welding. The benzene hydrogenation engineering heat resistant steel pipeline welding method provided by the invention has the advantages of reasonable construction step design, simplicity in operation and safe and reliable welding quality, and the engineering construction cost is reduced.

Description

technical field [0001] The invention relates to a pipe welding method, in particular to a heat-resistant steel pipe welding method for benzene hydrogenation engineering. Background technique [0002] The process of benzene hydrogenation unit is quite special, its system is complicated, there are many equipments, the pressure and temperature of the system itself are high, and the pump equipment is not allowed to run idle. The benzene hydrogenation project is mainly divided into the central control room and substation, refining device, water supply and drainage project, air compressor station, storage and transportation facilities (tank farm and pump room), power supply for the whole plant and lighting for the whole plant, torches and ancillary projects Facilities, in the electrical installation of these facilities, there are special requirements for lightning protection, fire protection, and explosion protection. Among them, the process medium pipelines of the benzene hydroge...

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): B23K31/00
Inventor 廖兴银陈和平寇大伟冯娜
Owner MCC5 GROUP CORP SHANGHAI
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