阅读说明：本技术 一种堆焊合金药芯焊丝 (Surfacing alloy flux-cored wire ) 是由 张轶 于 2018-08-13 设计创作，主要内容包括：本发明属于堆焊材料技术领域,特别涉及一种堆焊合金药芯焊丝。一种堆焊合金药芯焊丝,包括以下重量百分比的化学成分：碳0.2～0.6％,硅铁0.4～0.8％,碳化铬26～30％、磁铁矿1～3％,氟化钠0.2～1.0％,钛酸钾0.2～1.5％,镍0.1～0.22％,锰0.8～1.8％,余量为铁,具有较好的磨损性能、红硬性,并能防止堆焊层的剥离。(The invention belongs to the technical field of surfacing materials, and particularly relates to a surfacing alloy flux-cored wire. A surfacing alloy flux-cored wire comprises the following chemical components in percentage by weight: 0.2-0.6% of carbon, 0.4-0.8% of ferrosilicon, 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, so that the surfacing layer has good wear resistance and red hardness, and can be prevented from peeling off.)

1. The surfacing alloy flux-cored wire is characterized by comprising the following chemical components in percentage by weight: 0.2-0.6% of carbon, 0.4-0.8% of ferrosilicon, 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.

2. The surfacing alloy flux-cored wire according to claim 1, comprising the following chemical components in percentage by weight: 0.3-0.5% of carbon, 0.5-0.6% of ferrosilicon, 27-28% of chromium carbide, 1-1.5% of magnetite, 0.4-0.6% of sodium fluoride, 0.4-0.8% of potassium titanate, 0.1-0.22% of nickel, 1-1.5% of manganese and the balance of iron.

3. The surfacing alloy flux-cored wire according to claim 1, comprising the following chemical components in percentage by weight: 0.3% of carbon, 0.5% of ferrosilicon, 28% of chromium carbide, 1.5% of magnetite, 0.6% of sodium fluoride, 0.6% of potassium titanate, 0.22% of nickel, 1.5% of manganese and the balance of iron.

4. The surfacing alloy flux-cored wire according to claim 1, comprising the following chemical components in percentage by weight: 0.5% of carbon, 0.6% of ferrosilicon, 27% of chromium carbide, 1% of magnetite, 0.4% of sodium fluoride, 0.4% of potassium titanate, 0.1% of nickel, 1% of manganese and the balance of iron.

5. The surfacing alloy flux-cored wire according to claim 1, comprising the following chemical components in percentage by weight: 0.2% of carbon, 0.8% of ferrosilicon, 30% of chromium carbide, 1% of magnetite, 1.0% of sodium fluoride, 1.5% of potassium titanate, 0.1% of nickel, 1.8% of manganese and the balance of iron.

6. The surfacing alloy flux-cored wire according to claim 1, comprising the following chemical components in percentage by weight: 0.5% of carbon, 0.4% of ferrosilicon, 26% of chromium carbide, 3% of magnetite, 0.2% of sodium fluoride, 1.5% of potassium titanate, 0.22% of nickel, 0.8% of manganese and the balance of iron.

Technical Field

The invention belongs to the technical field of surfacing materials, and particularly relates to a surfacing alloy flux-cored wire.

Background

Surfacing is an economical and rapid process method for modifying the surface of materials, and is increasingly widely applied to manufacturing and repairing parts in various industrial departments. In order to most effectively exert the function of the overlay layer, it is desired to adopt an overlay welding method having a small dilution of the base material, a high deposition rate, and excellent overlay performance, i.e., an overlay welding technique of high quality, high efficiency, and low dilution rate.

The existing commonly used hardfacing materials contain high carbon and alloy elements, and carbide hard particles are mainly formed by carbon and chromium, titanium, vanadium, niobium and the like to improve the hardness of metal of the hardfacing layer, so that the wear resistance of the hardfacing layer is improved. However, the welding material has poor welding crack resistance and low toughness due to high carbon content.

Disclosure of Invention

The technical problem to be solved by the invention is to provide the surfacing alloy flux-cored wire which has better wear resistance and red hardness and can prevent the surfacing layer from peeling.

In order to solve the technical problems, the invention adopts the following technical scheme:

a surfacing alloy flux-cored wire comprises the following chemical components in percentage by weight: 0.2-0.6% of carbon, 0.4-0.8% of ferrosilicon, 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.

The preferable scheme is that the surfacing alloy flux-cored wire comprises the following chemical components in percentage by weight: 0.3-0.5% of carbon, 0.5-0.6% of ferrosilicon, 27-28% of chromium carbide, 1-1.5% of magnetite, 0.4-0.6% of sodium fluoride, 0.4-0.8% of potassium titanate, 0.1-0.22% of nickel, 1-1.5% of manganese and the balance of iron.

The preferable scheme is that the surfacing alloy flux-cored wire comprises the following chemical components in percentage by weight: 0.3% of carbon, 0.5% of ferrosilicon, 28% of chromium carbide, 1.5% of magnetite, 0.6% of sodium fluoride, 0.6% of potassium titanate, 0.22% of nickel, 1.5% of manganese and the balance of iron.

The preferable scheme is that the surfacing alloy flux-cored wire comprises the following chemical components in percentage by weight: 0.5% of carbon, 0.6% of ferrosilicon, 27% of chromium carbide, 1% of magnetite, 0.4% of sodium fluoride, 0.4% of potassium titanate, 0.1% of nickel, 1% of manganese and the balance of iron.

The preferable scheme is that the surfacing alloy flux-cored wire comprises the following chemical components in percentage by weight: 0.2% of carbon, 0.8% of ferrosilicon, 30% of chromium carbide, 1% of magnetite, 1.0% of sodium fluoride, 1.5% of potassium titanate, 0.1% of nickel, 1.8% of manganese and the balance of iron.

The preferable scheme is that the surfacing alloy flux-cored wire comprises the following chemical components in percentage by weight: 0.5% of carbon, 0.4% of ferrosilicon, 26% of chromium carbide, 3% of magnetite, 0.2% of sodium fluoride, 1.5% of potassium titanate, 0.22% of nickel, 0.8% of manganese and the balance of iron.

The invention has the beneficial effects that:

1. the formula of the invention is reasonable, the carbon, the ferrosilicon, the chromium carbide, the magnetite, the nickel and the manganese are added and compounded for use, and the sodium fluoride, the potassium titanate and other substances are added, so that the surfacing layer metal with high hardness is obtained after deposition, and the surfacing layer metal has better wear resistance.

2. Cr and C, Mo and C forming Cr₇C，Mo₇C, and Mo added into the high-hardness cubic carbide forms more carbides and composite carbides in a surfacing alloy structure, and the carbides are dispersed and distributed in a matrix structure to play a role in dispersion and distribution, further strengthen a welding line and have better red hardness.

3. Cr plays a role in stabilizing the structure in the alloy structure and delays the growth of carbide alloy particles.

4. The increase of the C content can lead to the increase of the hardness of the surfacing metal layer and the obvious reduction of the abrasion loss, but when the C content exceeds a certain proportion, the high hardness is also reduced, and the abrasion loss is improved. The content of C is proper, and the matrix structure contains a proper amount of residual austenite, so that the toughness of the welding line can be improved, and the stripping of the overlaying layer can be prevented.

Detailed Description

The technical solutions in the examples are clearly and completely described below. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.