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Submerged arc sintered flux containing Ti austenitic stainless steel, welding wire and preparation method

A technology of austenitic stainless steel and sintered flux, applied in welding equipment, welding medium, manufacturing tools, etc., can solve the problems of ugly weld bead surface, uneven weld edge, poor slag removal performance, etc., and achieve slag removal performance Good, the appearance of the weld bead surface is beautiful, and the effect of improving the slag removal performance

Active Publication Date: 2019-03-29
ATLANTIC CHINA WELDING CONSUMABLES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] CN108723638A (a kind of sintered flux used for niobium-containing titanium stainless steel welding wire and its preparation method and application) and CN106392379A (a kind of austenite containing Nb / Ti stainless steel submerged arc welding flux) each disclose a kind of flux, but the two fluxes are used For welding Ti-containing austenitic stainless steel, there are welding defects such as poor slag removal performance, ugly weld bead surface, uneven weld edge, undercut, pores, cracks, etc.

Method used

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  • Submerged arc sintered flux containing Ti austenitic stainless steel, welding wire and preparation method
  • Submerged arc sintered flux containing Ti austenitic stainless steel, welding wire and preparation method
  • Submerged arc sintered flux containing Ti austenitic stainless steel, welding wire and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] by CaF 2 5kg, SiO 2 25kg; Al 2 o 3 28kg; CaO 12kg; ZrO 2 3kg; 3 AlF 6 13kg; NaF 8kg, NaF 2 O 0.5kg; K 2 O 1.0kg; Fe 2 o 3 0.5kg; S 0.06kg; P 0.04kg, put all kinds of powder in the mixer, stir and mix evenly, add 20kg of potassium silicate to mix and granulate, then bake at 180°C, sinter at 760°C, and sieve. That is, a flux product is obtained.

[0032] Table 1 shows the mechanical properties data of deposited metal (after 1050±10℃×3h+water cooling).

[0033] Table 1 Deposited metal mechanical properties data

[0034]

Embodiment 2

[0036] by CaF 2 8kg, SiO 2 22kg; Al 2 o 3 29kg; CaO 12kg; ZrO 23kg; 3 AlF 6 13kg; NaF10kg, NaF 2 O 0.5kg; K 2 O 1.0kg; Fe 2 o 3 0.5kg; S 0.06kg; P 0.04kg, put the powder in the mixer, stir and mix evenly, add 22kg of sodium water glass to mix and granulate, then bake at 180°C, sinter at 760°C, and sieve. That is, a flux product is obtained.

[0037] Table 2 shows the mechanical properties data of deposited metal (after 1050±10℃×3h+water cooling).

[0038] Table 2 Deposited metal mechanical properties data

[0039]

Embodiment 3

[0041] by CaF 2 6kg, SiO 2 25kg; Al 2 o 3 28kg; CaO 12kg; ZrO 2 4kg; 3 AlF 6 14kg; NaF 8kg, NaF 2 O 0.5kg; K 2 O 1.0kg; Fe 2 o 3 0.5kg; S 0.06kg; P 0.04kg ratio Put the powder in the mixer, stir and mix evenly, add 18kg of potassium sodium water glass to mix and granulate, then bake at 180°C, sinter at 760°C, and sieve , that is, the flux product is obtained.

[0042] Table 3 shows the mechanical properties data of deposited metal.

[0043] Table 3 Deposited metal mechanical properties data

[0044]

[0045] The flux products of Examples 1-3 are matched with corresponding welding wires, and the welding process performance is good, the slag is easy to remove, and the mechanical properties meet the technical requirements.

[0046] In Examples 1-3, the welding base material is Ti-containing austenitic stainless steel. In the present invention, unless otherwise specified, % refers to mass percentage.

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Abstract

The invention discloses a submerged arc sintered flux containing T austenitic stainless steel. The submerged arc sintered flux containing the Ti austenitic stainless steel is made from the following components of 2-8% of CaF2, 20-28% of SiO2, 25-30% of Al2O3, 10-15% of CaO, 1-5% of ZrO2, 5-10% of NaF, 10-15% of Na3AlF6, 0.5-2% of Na2O, 0.5-2% of K2O, 0<Fe2O3<=3.0%, 0<S<=0.060%, and 0<P<=0.040%. Compared with the prior art, the welding process is stable during welding, fusion between a weld pass and a mother material and between the weld passes is good, deslagging is easy, forming of the surface of the welding passes is attractive, the weld edge is in order, and the welding defects of undercutting, air holes, cracks and the like are avoided.

Description

technical field [0001] The invention belongs to the welding flux used in conjunction with welding wire in the welding production process of metal materials. The flux and the corresponding welding wire can be used for the welding of Ti-containing austenitic stainless steel. The welding process is good, the slag is easy to remove, the shape is beautiful, and the fusion between the weld bead and the weld bead and the base metal is good. The weld has good process performance, especially excellent slag removal performance. Background technique [0002] Ti-containing austenitic stainless steel is based on the addition of Ti element to 304 stainless steel. In addition to chromium carbide, titanium carbide can also be formed, which has better resistance to creep stress and stress cracking. The principle is that Ti forms a stable MC-type compound TiC. Measured by the free enthalpy change of carbide formation, TiC is far more stable than chromium carbide and reduces the formation of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/36B23K35/40
CPCB23K35/3601B23K35/3603B23K35/361B23K35/40
Inventor 贾兴旺杨飞毛兴贵明廷泽蒋勇范银东张洁陶倩
Owner ATLANTIC CHINA WELDING CONSUMABLES