Automatic submerged-arc welding process of Q235 steel plate

A submerged arc automatic welding and welding process technology, applied in welding equipment, arc welding equipment, manufacturing tools, etc., can solve problems such as low quality of welding workpieces and accidents, achieve fast and safe welding, ensure welding quality, and select materials accurately Normative effect

Inactive Publication Date: 2015-04-22
WUHU CIMC RUIJIANG AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the diversity of welding methods and welding materials, there are various irregularities in the welding process, which leads to low quality of welded workpieces and sometimes accidents

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] A kind of submerged arc automatic welding process of Q235 steel plate, the thickness of Q235 steel plate is 6mm, it is characterized in that: comprise the following steps:

[0022] (1) Preparation before welding

[0023] First, remove the dirt on the surface of the welded parts, such as lumps of rust oxides, oil stains, etc.;

[0024] Second, choose the welding material, the welding wire is H08MnA steel wire, the flux is HJ401-H08A type HJ431 flux, and the diameter of the welding wire is 4mm;

[0025] Third, clean the surface of the welding wire, do not allow corrosion, and dry the damp flux;

[0026] (2) Temporary spot welding

[0027] First, use manual arc welding for temporary spot welding, and the length of spot welding is 50-80mm;

[0028] Second, precautions for temporary spot welding. The height and width of temporary spot welding must not exceed the size of the future weld. It should be a part of the future weld. The arc crater should be filled. ; ...

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PUM

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Abstract

The invention discloses an automatic submerged-arc welding process of a Q235 steel plate, and relates to the technical field of welding processes. The process comprises four major steps of preparing for welding, temporally spot welding, welding, and processing after welding. The automatic submerged-arc welding process of the Q235 steel plate has the advantages that the welding steps are simplified, the welding mode is simple, the materials selected are accurate and standard, the welding quality of the Q235 steel plate can be ensured, and moreover, a standard welding mode is provided for the Q235 steel plate, which is beneficial for the quick and safe welding of the Q235 steel plate.

Description

technical field [0001] The invention relates to the technical field of welding technology, in particular to a submerged arc automatic welding technology of Q235 steel plate. Background technique [0002] Different welding methods have different welding processes. The welding process is mainly determined according to the material, grade, chemical composition of the workpiece to be welded, the structure type of the weldment, and the welding performance requirements. First of all, it is necessary to determine the welding method, such as manual arc welding, submerged arc welding, argon tungsten arc welding, gas metal arc welding, etc. There are many types of welding methods, which can only be selected according to specific conditions. After the welding method is determined, the welding process parameters are formulated. The types of welding process parameters are different. For example, manual arc welding mainly includes: electrode type (or grade), diameter, current, voltage, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/18B23K9/235
CPCB23K9/18B23K9/235B23K2101/18B23K2103/04
Inventor 张剑
Owner WUHU CIMC RUIJIANG AUTOMOBILE
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