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A Welding Method for Stacking the Transition Layer in "Submerged Arc Welding Deposited Metal Test"

A technology of deposited metal and welding method is applied in the welding field of the transition layer of "submerged arc welding deposited metal test", which can solve the problem of doubling the consumption of welding materials and machining costs, and doubling the workload of the deposited metal test. and other problems, to achieve the effect of reducing welding material consumption and labor costs

Active Publication Date: 2019-07-19
INST OF RES OF IRON & STEEL JIANGSU PROVINCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this deposited metal test stack transition layer method doubles the deposited metal test effort, and doubles the welding consumables and machining costs

Method used

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  • A Welding Method for Stacking the Transition Layer in "Submerged Arc Welding Deposited Metal Test"
  • A Welding Method for Stacking the Transition Layer in "Submerged Arc Welding Deposited Metal Test"
  • A Welding Method for Stacking the Transition Layer in "Submerged Arc Welding Deposited Metal Test"

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1: Traditional stack cladding method

[0018] The performance of the submerged arc welding wire ESAB OK Autrod13.40 was evaluated by the deposited metal test. The diameter of the welding wire was 4.0mm, the basicity of the supporting flux was B=3.2, the size of the welding test plate was 150mm*200mm*20mm, and the grade was Q345. Open a 15° groove, in order to ensure that the coating after the weld seam is bisected > 3mm, the welding assembly gap is 10mm, and weld according to the welding parameters of the deposited metal test, the current I = 490A, the voltage U = 27V, and the welding speed v = 25m / h, the welding seam is piled up for 14 times and then filled up, cut along the center of the weld seam, and the test plate is milled flat, and then a 15° bevel is made on one side of the weld seam, and the deposited metal test is carried out, because it is necessary to control The interlayer temperature, so it takes about 0.3 hours to complete the deposition of each ...

Embodiment 2

[0019] Embodiment two: new technology

[0020] Use the deposited metal test to evaluate the performance of submerged arc welding wire ESAB OK Autrod13.40, the supporting flux basicity B=3.2, the size of the welding test plate is 150mm*400mm*20mm, the brand is Q345, and the side of the welding test plate is erected upwards. The two sides are fixed with thick steel blocks, ceramic pads are adhered to both sides of the test plate, and flux is piled up on the test plate, see figure 2 , because when the flux basicity B=3.2≥1.0, the welding parameters need to meet 0.0004UI-0.09v–B=0. In order to verify the rationality of the formula, four sets of welding parameters were selected for the cladding layer, see Table 1 , where the first two sets of parameters meet the requirements of the formula, and the weld width after welding is about 20mm; the last two sets of parameters do not meet the requirements of the formula, and the third set of parameters has a weld width of less than 20mm a...

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Abstract

The invention provides a welding method for stacking a submerged-arc welding deposited metal test transition layer. According to the alkalinity of a selected welding agent, proper welding parameters are selected, a ceramic lining is utilized, and the transition layer is directly stacked on the side face of a test panel. By means of the method, the labor cost and the machining cost of the deposited metal test can be effectively reduced, and the work time of the deposited metal test can be effectively shortened. Compared with a traditional deposited metal test transition layer stacking method, welding material consumption is greatly reduced in the welding method.

Description

technical field [0001] The invention belongs to the field of welding technology, in particular to a welding method for stacking transition layers in "submerged arc welding deposited metal test". Background technique [0002] Each type of welding wire must pass the deposited metal test to detect its mechanical properties after the welding wire manufacturer completes the production and before the downstream users enter the factory, and the low-alloy submerged arc welding wire accounts for nearly half of the welding wire consumption. The deposited metal test of arc welding wire has specially formulated the standard AWS A5.23 / A5.23M, and the corresponding standard GB / T12470-2003 has also been formulated in China. [0003] In order to avoid the impact of base metal alloy infiltration on the performance of the welding wire, the matching base metal should be selected before the deposited metal test is carried out. However, there are many types of low-alloy submerged arc welding wir...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K9/04B23K9/18
CPCB23K9/04B23K9/18
Inventor 王纳郭慧英陈刚张宇
Owner INST OF RES OF IRON & STEEL JIANGSU PROVINCE