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A kind of non-oxidation color ferritic stainless steel coated welding wire and its preparation method

A ferrite and stainless steel technology, applied in welding equipment, welding equipment, arc welding equipment, etc., can solve the problems of poor oxidation resistance, corrosion resistance, and durability decline, and achieve no oxidation color in weld formation, The effect of increasing weld strength and improving process stability

Active Publication Date: 2020-11-06
山东金泰隆焊材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the austenitic stainless steel flux-cored wire welds have poor oxidation resistance on the surface, and different oxidation colors are prone to appear on the surface of the weld after welding, which not only affects the appearance, but also is easy to corrode, resulting in a significant decrease in durability. The passivation process not only deteriorates the environment, but also takes time and increases costs
The best weld surface is silver-white, the worst is blue-black, and severe weld oxidation will also reduce corrosion resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A ferritic stainless steel coated welding wire with no oxidation color in the welding seam, which is composed of a welding core and a coating, the coating wraps the welding wire, and the adhesive sticks the coating around the welding core. The components of the coating welding wire are as follows:

[0032] Adhesive ingredients: It is made by mixing potassium water glass and sodium water glass at a mass ratio of 1:1; the Baume degree of potassium water glass is 0.44, the modulus is 2.7, and the mass percentage of potassium oxide is 14%, of which The mass percentage content of silicon is 28.0%, and the rest is water; the Baume degree of sodium silicate glass is 0.44, and the modulus is 2.2, wherein the mass percentage content of silicon dioxide is 25.7%, the mass percentage content of sodium oxide is 12.8%, and the rest is water;

[0033] Welding wire composition: The mass percentage of each chemical composition is: C 0.04%, Si0.5%, Co 0.05%, Tc5%, Zr 2%, Mn 1.0%, Cr 15%,...

Embodiment 2

[0042] A ferritic stainless steel coated welding wire with no oxidation color in the welding seam, which is composed of a welding core and a coating, the coating wraps the welding wire, and the adhesive sticks the coating around the welding core. The components of the coating welding wire are as follows:

[0043] Adhesive ingredients: potassium water glass and sodium water glass are mixed at a mass ratio of 2:1; the potassium water glass has a Baume degree of 45, a modulus of 2.8, and a mass percentage of potassium oxide of 15%, of which The mass percentage content of silicon is 30%, and the rest is water; the Baume degree of sodium silicate glass is 0.45, and the modulus is 2.4, wherein the mass percentage content of silicon dioxide is 25.9%, the mass percentage content of sodium oxide is 12.9%, and the rest is water;

[0044] Welding wire composition: The mass percentage of each chemical composition is: C 0.03%, Si0.8%, Co 0.08%, Tc6%, Zr 4%, Mn 0.8%, Cr 18%, Ti 0.25%, Ni 6....

Embodiment 3

[0053] A ferritic stainless steel coated welding wire with no oxidation color in the welding seam, which is composed of a welding core and a coating, the coating wraps the welding wire, and the adhesive sticks the coating around the welding core. The components of the coating welding wire are as follows:

[0054] Adhesive ingredients: potassium water glass and sodium water glass are mixed at a mass ratio of 3:1; the potassium water glass has a Baume degree of 0.46, a modulus of 2.9, and a mass percentage of potassium oxide of 17%. The mass percentage content of silicon is 31.0%, and the rest is water; the Baume degree of sodium silicate glass is 0.46, and the modulus is 2.5, wherein the mass percentage content of silicon dioxide is 26.0%, the mass percentage content of sodium oxide is 13%, and the rest is water;

[0055] Welding wire composition: The mass percentage of each chemical composition is: C 0.02%, Si1%, Co 0.1%, Tc 8%, Zr2-6%, Mn 1.0%, Cr 20%, Ti 0.3%, Ni 6.5%, S 0....

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Abstract

The invention belongs to the field of welding materials, and particularly relates to a welding wire, in particular to a welding seam halogen-free ferrite stainless steel flux-cored wire and a preparation method thereof. The welding wire is composed of a welding core and a coating, the coating wraps the welding wire, and an adhesive is used for bonding the coating around the welding core; and the preparation method specifically comprises the following steps: (1) preparing the adhesive; (2) mixing and granulating; (3) mixing the coating; (4) preparing the welding core, and (5) painting the coating and the periphery of the welding wire and baking to obtain the welding wire. According to the welding seam halogen-free ferrite stainless steel flux-cored wire, the welding wire can form a compactprotective layer after stainless steel is clad, and the combination of oxygen and metal components in the alloy is prevented, so that the surface of a welding seam is still silver white, the oxidationresistance is excellent, and the surface of the welding seam does not need to be subjected to subsequent de-oxidation treatment; and the production process is simple, the cost is low, the efficiencyis high, and continuous and large-scale production can be realized.

Description

technical field [0001] The invention belongs to the field of welding materials, in particular to a welding wire, in particular to a ferritic stainless steel coated welding wire without oxidation color and a preparation method thereof. Background technique [0002] Now our country is in a period of rapid development, and the steel industry is also ushering in the spring of development. As a new material in the steel industry, stainless steel has been widely used in petroleum, chemical industry, light industry, food, brewing, pharmaceuticals, home appliances, hydropower, machinery, construction, municipal and various civil appliances. The strong growth of stainless steel in the industrial field will surely drive the growth of stainless steel welding wire. The development of stainless steel welding consumables has achieved important results so far. The output of stainless steel flux-cored welding wire is increasing year by year, and the market demand for high-end products is a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/02B23K35/30B23K9/16B23K103/04
CPCB23K9/16B23K35/0261B23K35/3086
Inventor 庄浩琴
Owner 山东金泰隆焊材有限公司
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