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Preparation method of surfacing alloy flux-cored wire

A flux-cored welding wire and alloy technology, applied in the field of wear-resistant materials, can solve problems such as poor resistance to welding cracks, high carbon content, and cracks, and achieve good wear performance and reasonable formula.

Inactive Publication Date: 2020-02-21
湖北秦鸿新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high carbon content of such welding materials, they often have poor resistance to welding cracks and low toughness.
[0004] In the prior art, submerged arc welding wire or special flux-cored welding wire and flux for hard surface surfacing are mostly used in surfacing welding, which will cause the following problems: 1. The hardness of the surfacing layer is uneven and unstable; 2. There are cracks; 3. , wear resistance is not good, the cost is high, the above problems all restrict the development of hard surface surfacing flux cored wire

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A preparation method of surfacing alloy flux-cored wire, comprising the following steps:

[0023] S1, according to carbon 0.3%, ferrosilicon 0.5%, chromium carbide 28%, magnetite 1.5%, sodium fluoride 0.6%, potassium titanate 0.6%, nickel 0.22%, manganese 1.5%, and the balance is iron. After the raw materials are put into the vacuum induction furnace for melting, they are poured into electrode rods;

[0024] S2, using electroslag remelting equipment, the surface of the electrode rod is polished and inserted into the slag as a consumable electrode, and the slag is made of CaF 2 、Al 2 o 3 , CaO slag system, CaF in slag system 2 The mass percentage content is 80%, Al 2 o 3 The mass percentage content of CaO is 12%, the mass percentage content of CaO is 4%, the current is 2100A, the steel ingot capping and feeding current is 900A, the capping time is 4min, the power failure cooling is 10min, and the alloy ingot is obtained by cooling to normal temperature;

[0025] S3...

Embodiment 2

[0030] A preparation method of surfacing alloy flux-cored wire, comprising the following steps:

[0031] S1, by weight percentage, carbon 0.5%, ferrosilicon 0.6%, chromium carbide 27%, magnetite 1%, sodium fluoride 0.4%, potassium titanate 0.4%, nickel 0.1%, manganese 1%, and the balance is iron For batching, the raw materials are put into the vacuum induction furnace for melting, and then poured into electrode rods;

[0032] S2. Using electroslag remelting equipment, the surface of the electrode rod is polished and inserted into the slag as a consumable electrode. The slag is made of CaF 2 、Al 2 o 3 , CaO slag system, CaF in slag system 2 The mass percentage content is 75%, Al 2 o 3 The mass percentage content of CaO is 16%, the mass percentage content of CaO is 6%, the current is 2100A, the capping and feeding current of the steel ingot is 0A, the capping time is 3min, the power failure cooling is 5min, and the alloy ingot is obtained by cooling to normal temperature; ...

Embodiment 3

[0039] A preparation method of surfacing alloy flux-cored wire, comprising the following steps:

[0040] S1, by weight percentage, carbon 0.2%, ferrosilicon 0.8%, chromium carbide 30%, magnetite 1%, sodium fluoride 1.0%, potassium titanate 1.5%, nickel 0.1%, manganese 1.8%, and the balance is iron For batching, the raw materials are put into the vacuum induction furnace for melting, and then poured into electrode rods;

[0041] S2. Using electroslag remelting equipment, the surface of the electrode rod is polished and inserted into the slag as a consumable electrode. The slag is made of CaF 2 、Al 2 o 3 , CaO slag system, CaF in slag system 2 The mass percentage content is 85%, Al 2 o 3 The mass percentage content of CaO is 18%, the mass percentage content of CaO is 4%, the current is 2200A, the capping and feeding current of the steel ingot is 600A, the capping time is 4min, the ingot is taken off after power failure and cooling for 8min, and cooled to normal temperature ...

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Abstract

The invention belongs to the technical field of surfacing materials, and particularly relates to a preparation method of a surfacing alloy flux-cored wire. An alloy is prepared from the following components in percentage by mass: 0.2-0.6% of carbon, 0.4-0.8% of silicon iron, 26-30% of chromium carbide, 1-3% of magnetite, 0.2-1.0% of sodium fluoride, 0.2-1.5% of potassium titanate, 0.1-0.22% of nickel, 0.8-1.8% of manganese, and the balance of iron, and after burdening and smelting, the surfacing alloy flux-cored wire is prepared through technologies such as electroslag remelting, cogging, annealing, pickling, coping and cold drawing. The surfacing alloy flux-cored wire has good wear performance and red hardness, and peeling of a surfacing layer can be prevented.

Description

technical field [0001] The invention belongs to the technical field of wear-resistant materials, and in particular relates to a preparation method of surfacing alloy flux-cored welding wire. Background technique [0002] Surfacing welding, as an economical and rapid process method for surface modification of materials, is more and more widely used in the manufacture and repair of parts in various industrial sectors. In order to play the role of the surfacing layer most effectively, it is hoped that the surfacing welding method adopted has a small dilution of the base metal, a high deposition speed and excellent performance of the surfacing layer, that is, high-quality, high-efficiency, low-dilution rate surfacing welding technology. [0003] At present, the commonly used wear-resistant surfacing materials contain high carbon and alloy elements, mainly using carbon and chromium, titanium, vanadium, niobium, etc. to form carbide hard points to increase the hardness of the sur...

Claims

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Application Information

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IPC IPC(8): B23K35/40B23K35/30
CPCB23K35/3053B23K35/40
Inventor 张轶
Owner 湖北秦鸿新材料有限公司
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