Novel protective agent for back of stainless steel weld

A protective agent, stainless steel technology, applied in the direction of welding medium, welding equipment, welding/cutting medium/material, etc., can solve the problems that cannot meet the welding protection requirements of stainless steel factory pipes, and the welding protection of long stainless steel pipes is not suitable, so as to achieve good shape , good surface corrosion resistance and high pressure resistance

Inactive Publication Date: 2015-04-29
广东万事达实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, in the welding process of stainless steel, the main protection methods used are back nitrogen protection, ceramic liner protection, mixed gas protection, etc., but in specific operations

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0013] Example 1:

[0014] A novel protective agent for the back of stainless steel welds, including raw materials of the following components: magnesium oxide, aluminum oxide, titanium dioxide, calcium oxide, sodium chloride, manganese oxide, silicon dioxide, adhesive, and the balance is acetone. The mass percentages of the ingredients in the raw materials are: magnesium oxide: 32%, aluminum oxide 5.5%, titanium dioxide 8.5%, calcium oxide 5%, sodium chloride 6.5%, manganese oxide 13%, silicon dioxide 9%, adhesive 3%, the balance is acetone.

[0015] Further, the adhesive is made by mixing acrylic esters with methyl acrylate, methyl methacrylate, 2-ethyl methacrylate, and diphenylmethane diisocyanate (MDI).

[0016] Further, it includes the following steps: firstly, magnesia, aluminum oxide, titanium dioxide, calcium oxide, sodium chloride, manganese oxide, and silicon dioxide are put on an electronic scale and weighed according to the percentage, and then the weighed raw materials...

Example Embodiment

[0019] Example 2:

[0020] A novel protective agent for the back of stainless steel welds, including raw materials of the following components: magnesium oxide, aluminum oxide, titanium dioxide, calcium oxide, sodium chloride, manganese oxide, silicon dioxide, adhesive, and the balance is acetone. The mass percentages of the ingredients in the raw materials are: magnesium oxide: 35%, alumina 7%, titanium dioxide 9%, calcium oxide 5.5%, sodium chloride 7.5%, manganese oxide 1413%, silicon dioxide 9.5%, adhesive 3.5%, the balance is acetone.

[0021] Further, the adhesive is made by mixing acrylic esters with methyl acrylate, methyl methacrylate, 2-ethyl methacrylate, and diphenylmethane diisocyanate (MDI).

[0022] Further, it includes the following steps: firstly, magnesia, aluminum oxide, titanium dioxide, calcium oxide, sodium chloride, manganese oxide, and silicon dioxide are put on an electronic scale and weighed according to the percentage, and then the weighed raw materials ar...

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PUM

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Abstract

The invention discloses a novel protective agent for a back of a stainless steel weld. The novel protective agent comprises a raw material containing the following components in mass percent: 25-35 percent of magnesium oxide, 2.5-7 percent of aluminum oxide, 5-10 percent of titanium dioxide, 3.5-6.5 percent of calcium oxide, 5-8 percent of sodium chloride, 10-15 percent of manganese oxide, 6.5-10 percent of silicon dioxide, 2-3.5 percent of adhesive and the balance of acetone; the invention also discloses a preparation method for the protective agent. Through the manner, according to the novel protective agent for the back of the stainless steel weld, disclosed by the invention, the back of the weld can be free of oxidation, has a good shape and is smooth; meanwhile, the novel protective agent has good surface corrosion resistance and high pressure resistance, and is especially suitable for the back protection in stainless steel TIG (tungsten inert gas) welding.

Description

technical field [0001] The invention relates to a welding protection material, in particular to a new type of protection agent for the back of a stainless steel weld seam. Background technique [0002] Stainless steel has excellent corrosion resistance, heat resistance, oxidation resistance, good mechanical properties and processing properties, and is widely used in medical equipment, petrochemical and other industries. With the expansion of stainless steel application fields, the stainless steel welding market is also growing rapidly. [0003] At present, in the welding process of stainless steel, the main protection methods used are back nitrogen protection, ceramic liner protection, mixed gas protection, etc., but in specific operations, the above various protection methods are not suitable for welding protection of long stainless steel pipes. Therefore, it is also unable to meet the welding protection requirements of stainless steel plant pipelines. Contents of the i...

Claims

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Application Information

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IPC IPC(8): B23K35/362
CPCB23K35/362
Inventor 杨伟帅
Owner 广东万事达实业有限公司
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