Stainless steel welding material

A welding material and stainless steel technology, applied in the direction of welding/cutting medium/material, welding medium, welding equipment, etc., can solve the problems of galvanic corrosion of welded joints, reduce the service life of joints, increase the cost of users, etc., and achieve greater Cost of use, good cost performance, and the effect of reducing labor production costs

Active Publication Date: 2010-09-29
BAOSHAN IRON & STEEL CO LTD
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Problems solved by technology

[0003] In addition, because the austenitic welding material contains expensive metal Ni, it not only increases the user's use cost, but also due to the huge difference between the composition system of the welding material and the composition of the base metal, the welded joint is prone to galvanic corrosion and reduces the cost of the joint. service life

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  • Stainless steel welding material
  • Stainless steel welding material
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Embodiment Construction

[0035] According to the composition range of the present invention, the composition of the stainless steel welding wire of the three embodiments manufactured through the following processes such as smelting, rolling and drawing is shown in Table 1, and the diameter of the welding wire is 1.2 mm.

[0036]VOD (vacuum smelting)→die casting (30kg)→forging 48×48mm square slab→heating at 1050℃→rolling→ Wire rod → pickling → storage.

[0037] The wire rod is heated to 1050℃→drawing→annealing→drawing→pickling→annealing→drawing Welding wire→inspection→package→storage.

[0038] Table 1

[0039] serial number

C

Si

mn

P

S

Cr

Ni

Ti

1#

0.017

0.69

0.82

0.013

0.008

13.16

5.92

0.29

2#

0.018

0.64

0.80

0.012

0.005

14.23

6.36

0.22

3#

0.015

0.72

0.88

0.016

0.007

12.83

6.06

0.26

[0040] figure 1 It ...

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Abstract

The invention relates to a stainless steel material, a welding wire and a welding wire coil; and the material comprises the following components in percentage by weight: 0 to 0.03 percent of C, 0.5 to 1.0 percent of Mn, 0.5 to 1.0 percent of Si, 12.5 to 14.5 percent of Cr, 0.2 to 0.3 percent of Ti, 5.5 to 6.5 percent of Ni, 0 to 0.015 percent of S, 0 to 0.02 percent of P, and the balance Fe and other inevitable impurity elements. When being applied in ferritic stainless steel and martensitic and ferritic dual-phase stainless steel welding, the stainless steel welding material can replace austenitic stainless steel. The stainless steel welding material is applicable to welding under the condition that the heat input is 5 to 7kJ/cm.

Description

technical field [0001] The invention relates to a welding material and a welding process, in particular to a ferritic stainless steel welding material and a welding process thereof. Background technique [0002] 12% Cr ferritic stainless steel is more and more widely used in the manufacture of railway wagon body. At present, the welding of this steel type adopts ASME (American Society of Mechanical Engineers: Society of Mechanical Engineers) SFA-5.9 (stainless steel welding wire and filler Wire standard) in the ER308L welding wire for welding. Since ER308L belongs to the austenitic stainless steel system, and the base material is ferritic stainless steel, galvanic corrosion will inevitably occur in humid and acidic environments such as railway freight vehicles. Therefore, iron welded with austenitic stainless steel such as ER308L The body stainless steel affects the service life of its car body to a certain extent. However, due to the ferritic stainless steel under the act...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/30B23K9/173B23K9/095
Inventor 王宝森朱双春许轲毕洪运
Owner BAOSHAN IRON & STEEL CO LTD
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