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Raw wire for electric arc material additive manufacturing of petroleum pipeline structural part

A technology for oil pipelines and additive manufacturing, which is applied to manufacturing tools, welding/cutting media/materials, welding media, etc. It can solve the problems of low one-time yield and achieve beautiful molding, good mechanical properties, high and low temperature impact toughness. Effect

Active Publication Date: 2018-10-19
WUHAN TEMO WELDING CONSUMABLES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is necessary to design a precursor for arc additive manufacturing of oil pipeline structural parts so as to print out the structural parts of oil pipelines by means of arc additive manufacturing, which can not only solve the problem of low yield at one time, but also ensure Structural parts have excellent low temperature impact toughness

Method used

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  • Raw wire for electric arc material additive manufacturing of petroleum pipeline structural part
  • Raw wire for electric arc material additive manufacturing of petroleum pipeline structural part
  • Raw wire for electric arc material additive manufacturing of petroleum pipeline structural part

Examples

Experimental program
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Effect test

Embodiment 1

[0021] This embodiment provides a precursor wire for arc additive manufacturing of oil pipeline structural parts, including the following chemical components in weight percentage: C: 0.09%, Mn: 2.0%, Si: 0.1%, P: 0.003%, S: 0.004%, Cr: 0.6%, Mo: 0.30%, Ni: 1.2%, Cu: 0.05%, Ti: 0.02%, Fe: 95.833%.

Embodiment 2

[0023] This embodiment provides a precursor wire for arc additive manufacturing of oil pipeline structural parts, including the following chemical components by weight percentage: C: 0.15%, Mn: 1.0%, Si: 0.13%, P: 0.005%, S: 0.006%, Cr: 1.2%, Mo: 0.4%, Ni: 1.8%, Cu: 0.04%, Ti: 0.1%, Fe: 95.169%.

Embodiment 3

[0025] This embodiment provides a precursor wire for arc additive manufacturing of oil pipeline structural parts, including the following chemical components by weight percentage: C: 0.13%, Mn: 1.5%, Si: 0.06%, P: 0.004%, S: 0.006%, Cr: 0.1%, Mo: 0.80%, Ni: 2.6%, Cu: 0.1%, Ti: 0.08%, Fe: 94.62%.

[0026] According to the formulas of the raw wire provided in the above-mentioned embodiment 1, embodiment 2 and embodiment 3, three furnaces of welding wire steel were respectively smelted, and after annealing, it was drawn into a raw wire for arc additive manufacturing of oil pipeline structural parts with a diameter of φ4.0. The composition of the wire is shown in Table 1, and the chemical composition and mechanical properties of the deposited metal after the raw wire and flux are used together are shown in Table 2 and Table 3, respectively.

[0027]

[0028]

[0029]

[0030] It can be seen from Table 3 that the raw wire for arc additive manufacturing of oil pipeline st...

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Abstract

The invention belongs to the technical field of welding materials, and particularly relates to a raw wire for electric arc material additive manufacturing of a petroleum pipeline structural part. Theraw wire comprises the following chemical components of, by weight, 0.09-0.15% of C, 1.0 -2.0% of Mn, less than or equal to 0.3% of Si, less than or equal to 0.012% of P, less than or equal to 0.012%of S, 0.1-1.2% of Cr, 0.20-0.80% of Mo, 1.2-2.6% of Ni, less than or equal to 0.3% of Cu, 0.02-0.1% of Ti, and the balance iron. The raw wire for electric arc material additive manufacturing of the petroleum pipeline structural part has good mechanical properties and relatively high low-temperature impact toughness, the tensile strength is greater than 680 MPa, the low-temperature impact energy at-40 DEG C is guaranteed to be above 150 J, and the low-temperature impact energy at -60 DEG C is guaranteed to be above 120J. The raw wire is matched with special welding flux for additive manufacturing to perform printing of the petroleum pipeline structural part, the printing process is excellent, the appearance is attractive, and weld beads are fine.

Description

technical field [0001] The invention belongs to the technical field of welding materials, and in particular relates to a raw wire for arc additive manufacturing of oil pipeline structural parts. Background technique [0002] With the rapid development of my country's economy, the demand for oil and natural gas is becoming more and more vigorous. The national west-east gas transmission project and gas transmission projects from Russia and other countries have been invested one after another. In order to reduce operating costs, improve efficiency, and improve the safety and reliability of oil pipelines Therefore, oil pipeline steel should not only have higher strength but also need higher low temperature impact toughness. Structural parts such as oil pipeline tees are usually cast, and castings are prone to quality defects such as shrinkage cavities, low impact toughness, and low first-time yield. [0003] Arc additive manufacturing technology is a process method that uses the...

Claims

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Application Information

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IPC IPC(8): B23K35/30
CPCB23K35/3066
Inventor 刘东何涛周海龙张东海
Owner WUHAN TEMO WELDING CONSUMABLES CO LTD
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