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

A kind of galvanized steel plate welding method

A technology of galvanized steel sheet and welding method, applied in welding equipment, plasma welding equipment, welding/welding/cutting objects, etc., can solve the problems of affecting the health of operators, polluting the environment, inconvenient operation, etc., to improve convenience and flexibility, improving the construction environment, ensuring the effect of arc stability and strength

Active Publication Date: 2020-01-21
CHINA NUCLEAR IND FIFTH CONSTR CO LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of inconvenient operation and environmental pollution and affecting the health of operators during the continuous melting welding of galvanized steel sheets using the prior art, the present invention proposes a welding method for galvanized steel sheets

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
  • A kind of galvanized steel plate welding method
  • A kind of galvanized steel plate welding method
  • A kind of galvanized steel plate welding method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Example 1, using the welding method of the present invention, continuous fusion welding is performed on galvanized steel sheets with a thickness of 1.6 mm. Among them, the welding current is 103A, the ion gas flow is 1.2L / min, the welding speed is 330mm / min, the shielding gas flow is 20L / min, and the wire feeding speed is 175cm / min. figure 1 with figure 2 It is a front and back welding effect diagram of the galvanized steel sheet after the galvanized steel sheet of this embodiment is welded. It can be seen from the figure that continuous and smooth welds are formed on the front and back of the galvanized steel sheet, which meets the welding quality requirements for continuous fusion welding of the galvanized steel sheet.

Embodiment 2

[0039] Example 2, using the welding method of the present invention, continuous fusion welding is performed on galvanized steel sheets with a thickness of 2.7 mm. Among them, the welding current is 130A, the ion gas flow is 1.8L / min, the welding speed is 300mm / min, the shielding gas flow is 20L / min, and the wire feeding speed is 208cm / min. Figure 5 with Image 6 It is a front and back welding effect diagram of the galvanized steel sheet after the galvanized steel sheet of this embodiment is welded. It can be seen from the figure that continuous and smooth welds are formed on the front and back of the galvanized steel sheet, which meets the welding quality requirements for continuous fusion welding of the galvanized steel sheet.

Embodiment 3

[0043] Example 3, using the welding method of the present invention, continuous fusion welding is performed on galvanized steel sheets with a thickness of 3.5 mm. Among them, the welding current is 143A, the ion gas flow rate is 2.3L / min, the welding speed is 250mm / min, the shielding gas flow rate is 15L / min, and the wire feeding speed is 210cm / min. Figure 9 with Figure 10 It is a front and back welding effect diagram of the galvanized steel sheet after the galvanized steel sheet of this embodiment is welded. It can be seen from the figure that continuous and smooth welds are formed on the front and back of the galvanized steel sheet, which meets the welding quality requirements for continuous fusion welding of the galvanized steel sheet.

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
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of welding techniques and particularly relates to a welding method of a galvanized steel sheet. The welding method of the galvanized steel sheet is aimed at solving the problems that in the prior art, operation is inconvenient when the galvanized steel sheet is subjected to continuous melt welding, and in the zinc removal process, pollution to the environment exists, and physical health of operators is affected. The welding method of the galvanized steel sheet comprises the following steps that S1, the galvanized steel sheet is subjected to I-type groove machining and surface cleaning; S2, continuous melt welding is directly carried out on the galvanized steel sheet in a plasma arc welding mode; and S3, weld joints and the two sides thereof are subjected to welding slag removal and zinc supplementing. By adoption of the welding method of the galvanized steel sheet, convenience and flexibility of welding of the galvanized steel sheet at a construction site are improved, and protection for the construction environment and the health of the operators is enhanced.

Description

technical field [0001] The invention belongs to the technical field of welding technology, and in particular relates to a welding method for galvanized steel sheets with a thickness of 1.6-3.5 mm. Background technique [0002] During the construction of the AP1000 nuclear power plant, when welding the ventilation pipes using S220GD+Z, S250GD+Z, and S280GD+Z galvanized steel sheets, it is required to use fusion welding for continuous welding to ensure that the galvanized steel sheets are connected Complete fusion of positions. [0003] At present, there are two main methods for continuous fusion welding of galvanized steel sheets: the first is to use laser welding, which emits a high-power-density laser beam through the laser, and at the same time adds side blowing to drive off the zinc vapor, so that It is used to enhance the anti-interference ability of zinc vapor, so as to complete the rapid and continuous melting welding of galvanized steel sheets. However, the laser we...

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): B23K10/02
CPCB23K10/02B23K2101/18B23K2103/04
Inventor 朱平张亚滨刘卫华唐春英何文娟杜斌程定富陈月峰严德忠
Owner CHINA NUCLEAR IND FIFTH CONSTR CO LTD