Thick-wall stainless steel pipe welding groove manufacturing method

A stainless steel tube and welding groove technology, applied in the field of welding groove surface grinding, can solve the problems of excessive feed, large cutting allowance, affecting welding quality, etc., so as to avoid excessive cutting angle and reduce grinding work. The effect of the amount and the long construction preparation time

Active Publication Date: 2019-06-18
SHANGHAI BAOSTEEL IND TECHNOLOGICAL SERVICE
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The beveling machine is used for operation, the beveling machine is relatively heavy, and the internal expansion is not tight during use, and the excessive feed rate may easily cause chipping, resulting in equipment and personal safety accidents such as blade damage
At the same time, there are many types of construction pipelines on site, especially in many reconstruction projects, the old thick-walled steel pipes are cut at the original welds, and the production capacity of the beveling machine is greatly reduced.
Therefore, in the current on-site construction, more operators still use angle grinders to grind the grooves. The cutting allowance of thick-walled steel pipe grooves is large, and the welding operators can ensure the quality of groove grinding according to their own habits and experience. , so the requirements for employees' experience, safety awareness, and professional knowledge are relatively high, and there are many uncertain factors for general auxiliary workers. For example, grinding a Φ68 (wall thickness 10mm) bevel generally takes 15-20 minutes Do it at intervals to prevent the angle grinder from getting hot, or even burn the motor, resulting in low processing efficiency
At the same time, the groove angle of the manual grinding groove processing is uneven, the groove surface is not smooth, and it is easy to have protrusions or depressions.
Affect the later welding quality

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
  • Thick-wall stainless steel pipe welding groove manufacturing method
  • Thick-wall stainless steel pipe welding groove manufacturing method
  • Thick-wall stainless steel pipe welding groove manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1: see Figure 1-Figure 5 , A method for making welding grooves for thick-walled stainless steel pipes, the method includes the following steps: 1) preparations before welding grooves for thick-walled stainless steel pipes; 2) using an equally divided stainless steel folding sheet with an angle grinder ( Install the cutting piece) divide the stainless steel pipe in radial sections; 3) cut the separated groove, 4) polish the uneven surface left by the cutting, and correct the blunt edge size of the groove, 5) clean up , The step 1) preparation before operation is as follows, understand the groove type and size of the groove (such as figure 1 ), prepare spool, polisher, cutting disc, polishing sheet, tape measure, and prepare the initial material of the stainless steel folding sheet to be divided into equal parts, and process and shape it by yourself or commission, and divide the stainless steel folding sheet into equal parts according to the size of the processing ...

Embodiment 2

[0022] Example 2: see Figure 1-Figure 5 , A thick-walled stainless steel pipe welding groove manufacturing device, the device includes a stainless steel folding sheet and an angle grinder cutting cage, the main dimensions of the stainless steel folding sheet are total length, width, roll-in size, equal fraction, frame Edge size, overlap size, etc. The equal fraction should be as many as possible, but in order to improve the work efficiency, it is generally appropriate to reduce, but not less than 10 equal fractions; the angle grinder cutting cage has one end fixed on the thick-walled stainless steel tube, and the other end clamps the angle grinder Hold it, connect it with a connecting rod in the middle, adjust the corresponding angle and lock it, the angle grinder can cut while rotating along the stainless steel tube; the angle grinder cutting holder includes an arc mechanism, a rotating arm, and an angle Grinding machine clamping assembly, the arc mechanism is composed of a ...

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 thick-wall stainless steel pipe welding groove manufacturing method. The thick-wall stainless steel pipe welding groove manufacturing method comprises the following steps that 1) preparation before thick-wall stainless steel pipe welding groove operation is performed; 2) an equal-division stainless steel folding sheet is adopted to cooperate with an angle grinder for segmented breaking of a stainless steel pipe in the radial direction; 3) a divided groove is cut; 4) an uneven surface left after cutting is ground, and the root face size of the groove is corrected; and5) cleaning is performed. According to the thick-wall stainless steel pipe welding groove manufacturing method, the grinding workload is greatly reduced, the environmental pollution is avoided, the risk of occupational diseases, namely metallic pneumoconiosis, of operators is reduced, the working time is shortened, the working efficiency is improved, and the groove machining quality is ensured.

Description

Technical field [0001] The invention relates to a method for manufacturing a thick-walled stainless steel pipe welding groove, which belongs to the technical field of welding groove surface polishing. Background technique [0002] The pipe fittings in the hydraulic system include oil pipes and pipe joints, which are devices for connecting various hydraulic components and conveying pressure oil. The pipe fittings should have sufficient pressure resistance (strength), no leakage, and low pressure loss. Hydraulic high-pressure pipelines are distributed in many companies. Among them, thick-walled stainless steel pipes are mostly used. The welding of pipe butt welds adopts all argon welding or argon-electric welding (argon arc welding bottoming and manual arc welding) welding methods. The welding groove processing complies with the relevant regulations of GB / T985-1988. However, in actual on-site construction, the quality of the welding seam does not meet the requirements because the q...

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): B23P15/00
Inventor 徐天亮
Owner SHANGHAI BAOSTEEL IND TECHNOLOGICAL SERVICE
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