Unlock instant, AI-driven research and patent intelligence for your innovation.

Control method for preventing deformation of structure penetration welding groove

A control method and bevel technology, applied in manufacturing tools, welding equipment, arc welding equipment, etc., can solve the problem that the quality of welded joints cannot meet 100% volume inspection, and achieve the effect of high pass rate

Pending Publication Date: 2022-03-11
SICHUAN CHUANGUO BOILER
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing method of penetration of the main pipe and the branch pipe, such as TIG backing or boring root welding, it cannot be used; no matter whether the branch pipe is beveled, the main pipe is beveled or the branch pipe and the main pipe are both beveled, there is no suitable method. The welding method or process can meet the penetration and fusion, but the quality of the welded joint cannot meet the assessment requirements of 100% volume inspection

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
  • Control method for preventing deformation of structure penetration welding groove

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1: Pre-clear the parts that cannot be penetrated on the branch pipe and the main pipe by machining. After pre-cleaning the root, the part to be welded can be processed to meet the penetration and fusion of the existing welding method. Through the concept of pre-clearing the root The designed groove of the welded joint can achieve root penetration and fusion through the verification of the simulation part, and no special skilled welder is required. Then the inclined pipe joint is assembled, the axis angle of the inclined pipe joint is set to 45°, and the S1 is welded by TIG welding. The pre-treated groove is welded, and the TIG welding bottoming welding process realizes root penetration and fusion. According to the welding filling amount of each part of the welding groove, a reasonable welding sequence is formulated to ensure the angle between the branch pipe and the axis of the main pipe after welding. 45°, the designed welding sequence and the welding deformatio...

Embodiment 2

[0018] Example 2: Pre-clear the parts that cannot be penetrated on the branch pipe and the main pipe by machining. After pre-cleaning the root, the part to be welded can be processed to meet the penetration and fusion of the existing welding method. Through the concept of pre-clearing the root The designed groove of the welded joint can achieve root penetration and fusion through the verification of the simulation piece, and no special skilled welder is required. Then the inclined pipe joint is assembled. The axis angle of the inclined pipe joint is set to 46°, and the S1 is welded by TIG welding. The pre-treated groove is welded, and the TIG welding bottoming welding process realizes root penetration and fusion. According to the welding filling amount of each part of the welding groove, a reasonable welding sequence is formulated to ensure the angle between the branch pipe and the axis of the main pipe after welding. 45°, the designed welding sequence and the welding deformati...

Embodiment 3

[0019] Example 3: Pre-clear the parts that cannot be penetrated on the branch pipe and the main pipe by machining. After pre-cleaning the root, the part to be welded can be processed to meet the penetration and fusion of the existing welding method. Through the concept of pre-clearing the root The designed groove of the welded joint can achieve root penetration and fusion through the verification of the simulation part, and no special skilled welder is required. Then, the inclined pipe joint is assembled. The axis angle of the inclined pipe joint is set to 47°, and the S1 is welded by TIG welding. The pre-treated groove is welded, and the TIG welding bottoming welding process realizes root penetration and fusion. According to the welding filling amount of each part of the welding groove, a reasonable welding sequence is formulated to ensure the angle between the branch pipe and the axis of the main pipe after welding. 45°, the designed welding sequence and the welding deformati...

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 discloses a control method for preventing deformation of a structure through-welding groove, and relates to the technical field of welding. The invention discloses a control method for preventing deformation of a structure through-welding groove. The control method comprises the following steps that S1, parts, which cannot be through-welded, on a branch pipe and a main pipe are removed in a machining mode in advance; s2, welding the groove pretreated in the S1 by adopting a TIG (Tungsten Inert Gas) welding backing welding process; s3, according to the welding filling amount of all parts of the welding groove, a reasonable welding sequence is formulated; and S4, welding the groove by adopting shielded metal arc welding according to the welding sequence in the S3. A welding joint groove designed according to a pre-back-gouging concept can realize root penetration and fusion through verification of a simulation piece, and a welder with special skills is not needed. The designed welding sequence and the welding deformation control measure formulated according to the pre-judged deformation direction are effective, and the included angle of the branch pipe and the main pipe axis can meet the pattern requirement without correction. The welding groove can be machined through a common milling machine and numerical control, and the product manufacturing requirement is met.

Description

technical field [0001] The invention relates to the field of welding technology, in particular to a control method for preventing deformation of a structure welding penetration groove. Background technique [0002] During the manufacturing process of conventional island headers, the company involves single-sided welding of 45° inclined pipe joints (branch pipes) and header body (main pipe). The inclination angle between the branch pipe and the main pipe is 45°, which exceeds the maximum allowable angle of 75° for structural penetration recommended in the appendix of Chapter S of the RCC-M standard. Therefore, there is no engineering case reference for structural penetration; the wall thickness of the main pipe of the branch pipe is tens of millimeters, and there is no reference material for achieving penetration, and there is no special welding method or welding process to choose from. In the existing method of penetration of the main pipe and the branch pipe, such as TIG b...

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): B23K9/235B23K9/167
CPCB23K9/235B23K9/167
Inventor 胡汉严双伍顾森罗嘉豪
Owner SICHUAN CHUANGUO BOILER