High strength welding rod for oceaneering and manufacturing method and welding method thereof

A marine engineering, high-strength technology, applied in welding media, welding equipment, welding equipment, etc., can solve research problems, and achieve the effect of strong seawater corrosion resistance

Inactive Publication Date: 2014-04-23
HANGZHOU YONGXIANG WELDING CONSUMABLES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Although some domestic enterprises and scientific research institutes have developed different series of ultra-low hydrogen high-toughness electrodes, they have not conducted in-depth research on them, especially not combined with the actual use conditions of steel for deep-water offshore platforms. , ultra-low hydrogen, local mechanical performance evaluation of welded joints, high strength, high toughness, high purity and other aspects are comprehensively analyzed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Example 1: A high-strength welding rod for marine engineering, proportioned by weight percentage:

[0046] (1) Composition of medicine skin:

[0047] Marble 25%, fluorite 15%, silicate 3%, deoxidizer 5%, alloying agent 10%, pretreatment powder 10%;

[0048] (2) Refined core components:

[0049] C≦0.020%, Si≦0.050%, Mn 0.40~0.60%, S≦0.006%, P≦0.006%, Cr≦0.05%, Mo≦0.05%, Ni≦0.05%, Cu≦0.05, As≦0.001%.

[0050] The deoxidizer is ferrosilicon.

[0051] The alloying agent is metallic chromium molybdenum iron.

[0052] The pretreatment powder is a mixture of calcium carbonate, magnesia, alumina and titanium dioxide.

[0053] A preparation method of high-strength welding rod for marine engineering, according to the following steps:

[0054] (1) Sintering pretreatment of powder:

[0055] Mix the pretreatment powder in the skin component to form a pretreatment mixed powder, add a binder to the pretreatment mixed powder, and place it at room temperature for 12 hours to dry it to form ...

Embodiment 2

[0077] Example 2: A high-strength welding rod for marine engineering, proportioned by weight percentage:

[0078] (1) Composition of medicine skin:

[0079] Marble 30%, fluorite 20%, silicate 5%, deoxidizer 8%, alloying agent 15%, pretreatment powder 15%;

[0080] (2) Refined core components:

[0081] C≦0.020%, Si≦0.050%, Mn 0.40~0.60%, S≦0.006%, P≦0.006%, Cr≦0.05%, Mo≦0.05%, Ni≦0.05%, Cu≦0.05, As≦0.001%.

[0082] The deoxidizer is ferromanganese.

[0083] The alloying agent is nickel powder.

[0084] The pretreatment powder is a mixture of calcium carbonate, magnesia, alumina and titanium dioxide.

[0085] A preparation method of high-strength welding rod for marine engineering, according to the following steps:

[0086] (1) Sintering pretreatment of powder:

[0087] Mix the pretreatment powder in the skin component to form a pretreatment mixed powder, add a binder to the pretreatment mixed powder, and place it at room temperature for 18 hours to dry it to form a powder;

[0088] Pu...

Embodiment 3

[0109] Example 3: A high-strength welding rod for marine engineering, proportioned by weight percentage:

[0110] (1) Composition of medicine skin:

[0111] Marble 35%, fluorite 25%, silicate 6%, deoxidizer 12%, alloying agent 18%, pretreatment powder 20%;

[0112] (2) Refined core components:

[0113] C≦0.020%, Si≦0.050%, Mn 0.40~0.60%, S≦0.006%, P≦0.006%, Cr≦0.05%, Mo≦0.05%, Ni≦0.05%, Cu≦0.05, As≦0.001%.

[0114] The deoxidizer is one of ferromanganese.

[0115] The alloying agent is copper powder.

[0116] The pretreatment powder is a mixture of calcium carbonate, magnesia, alumina and titanium dioxide.

[0117] A preparation method of high-strength welding rod for marine engineering, according to the following steps:

[0118] (1) Sintering pretreatment of powder:

[0119] Mix the pretreatment powder in the skin component to form a pretreatment mixed powder, add a binder to the pretreatment mixed powder, and place it at room temperature for 24 hours to dry it to form a powder;

[...

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Abstract

The invention relates to welding rods for oceaneering, in particular to a high strength welding rod for oceaneering and a manufacturing method and a welding method thereof. The welding rod and the methods are also suitable for the field of manufacturing of high-strength seawater corrosion resistant devices such as oceaneering ships, ocean oil pipelines and nuclear power devices. The manufacturing method includes the following steps of powder sintering preprocessing, binder disposition, power blending accuracy and stirring evenness control, welding rod manufacturing and welding rod baking time and temperature control. The welding rod is high in seawater corrosion resistance, ultralow in hydrogen, high in strength, toughness and purity and applicable to the oceaneering.

Description

Technical field [0001] The invention relates to a welding rod for marine engineering, in particular to a high-strength welding rod for marine engineering, a preparation method and a welding method, and is also suitable for the manufacturing of high-strength seawater corrosion-resistant equipment such as marine engineering ships, marine oil pipelines, and nuclear power. Background technique [0002] Domestic steel companies have made great breakthroughs in the research of large thickness (100mm) TMCP high-performance steels in petrochemicals and marine engineering equipment. Welding material manufacturers have not broken through key technologies in the control of impurity elements in welding materials, and have not yet developed this type of steel. Advanced welding materials. It is difficult to develop high-purity, high-strength, ultra-low hydrogen, high-toughness, and corrosion-resistant marine engineering welding materials. It is a high-tech in the field of welding materials re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/368B23K35/365B23K9/00B23K35/40
CPCB23K35/3602B23K9/00B23K35/3073B23K35/404B23K2101/185
Inventor 朱藤辉
Owner HANGZHOU YONGXIANG WELDING CONSUMABLES
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