阅读说明：本技术 一种耐磨弯管材料的制备工艺 (Preparation process of wear-resistant bent pipe material ) 是由 王翔 于 2020-12-29 设计创作，主要内容包括：本发明公开了一种耐磨弯管材料,该耐磨弯管材料的配方包括以下组份：碳3.3～3.7%、硅2.3～2.8%、锰0.5～1.0%、铬0.4～1.0%、磷0.03～0.06%、硫0.01～0.02%、镁0.03～0.05%、铈0.01～0.02%、钒0.3～1.0%、钕0.3～1.0%、氧化铝4～6%、二硼化钛3～6%,其余为铁；本发明还公开了一种耐磨弯管材料的制备工艺,该制备方法包括以下步骤：定量称取,原料熔炼,球化处理和孕育处理,浇注成型,淬火,耐磨硬质相加覆,浸涂；有益效果是：本发明制备出的耐磨弯管材料得到较大提升,通过氧化铝和二硼化钛混合的耐磨硬质相使弯管的耐磨性能得到提升,在弯管内壁浸涂一层铁氟龙减少物料粘附,使耐磨弯管不仅适用于硬质物质输送,且适用于软质材料输送。(The invention discloses a wear-resistant bent pipe material, which comprises the following components in parts by weight: 3.3-3.7% of carbon, 2.3-2.8% of silicon, 0.5-1.0% of manganese, 0.4-1.0% of chromium, 0.03-0.06% of phosphorus, 0.01-0.02% of sulfur, 0.03-0.05% of magnesium, 0.01-0.02% of cerium, 0.3-1.0% of vanadium, 0.3-1.0% of neodymium, 4-6% of aluminum oxide, 3-6% of titanium diboride and the balance of iron; the invention also discloses a preparation process of the wear-resistant bent pipe material, and the preparation method comprises the following steps: quantitative weighing, raw material smelting, spheroidizing and inoculation, casting molding, quenching, wear-resistant hard phase coating and dip coating; the beneficial effects are that: the wear-resistant elbow material prepared by the invention is greatly improved, the wear resistance of the elbow is improved through the wear-resistant hard phase mixed by the aluminum oxide and the titanium diboride, and the adhesion of materials is reduced by dip-coating a layer of teflon on the inner wall of the elbow, so that the wear-resistant elbow is not only suitable for conveying hard substances, but also suitable for conveying soft materials.)

1. A wear-resistant elbow material, which is characterized in that; the formula of the wear-resistant bent pipe material comprises the following components: 3.3-3.7% of carbon, 2.3-2.8% of silicon, 0.5-1.0% of manganese, 0.4-1.0% of chromium, 0.03-0.06% of phosphorus, 0.01-0.02% of sulfur, 0.03-0.05% of magnesium, 0.01-0.02% of cerium, 0.3-1.0% of vanadium, 0.3-1.0% of neodymium, 4-6% of aluminum oxide, 3-6% of titanium diboride and the balance of iron.

2. A wear resistant elbow material as claimed in claim 1, wherein: comprises 3.3 percent of carbon, 2.8 percent of silicon, 0.5 percent of manganese, 1.0 percent of chromium, 0.03 percent of phosphorus, 0.02 percent of sulfur, 0.03 percent of magnesium, 0.02 percent of cerium, 0.3 percent of vanadium, 1.0 percent of neodymium, 4 percent of aluminum oxide, 6 percent of titanium diboride and the balance of iron.

3. A wear resistant elbow material as claimed in claim 1, wherein: comprises 3.7 percent of carbon, 2.3 percent of silicon, 1.0 percent of manganese, 0.4 percent of chromium, 0.06 percent of phosphorus, 0.01 percent of sulfur, 0.05 percent of magnesium, 0.01 percent of cerium, 1.0 percent of vanadium, 0.3 percent of neodymium, 6 percent of aluminum oxide, 3 percent of titanium diboride and the balance of iron.

4. A wear resistant elbow material as claimed in claim 1, wherein: comprises 3.4 percent of carbon, 2.4 percent of silicon, 0.7 percent of manganese, 0.6 percent of chromium, 0.04 percent of phosphorus, 0.01 percent of sulfur, 0.04 percent of magnesium, 0.01 percent of cerium, 0.5 percent of vanadium, 0.6 percent of neodymium, 5 percent of aluminum oxide, 4 percent of titanium diboride and the balance of iron.

5. A wear resistant elbow material as claimed in claim 1, wherein: comprises 3.6 percent of carbon, 2.6 percent of silicon, 0.9 percent of manganese, 0.8 percent of chromium, 0.05 percent of phosphorus, 0.02 percent of sulfur, 0.04 percent of magnesium, 0.02 percent of cerium, 0.7 percent of vanadium, 0.8 percent of neodymium, 5 percent of aluminum oxide, 5 percent of titanium diboride and the balance of iron.

6. A process for preparing a wear resistant elbow material according to any one of claims 1-5, characterized in that: the preparation method comprises the following steps:

the method comprises the following steps: quantitative weighing, namely weighing all the raw materials according to the components;

step two: smelting raw materials, namely smelting the prepared raw materials in the step one by using a medium-frequency induction furnace, and tapping iron into a spheroidizing ladle when the smelting temperature of molten iron reaches 1500-1550 ℃;

step three: spheroidizing and inoculating, namely weighing a rare earth magnesium silicon iron spheroidizing agent accounting for 1.2-1.6 wt% of the molten iron and a silicon barium alloy inoculant accounting for 0.4-0.8 wt% of the molten iron, adding the rare earth magnesium silicon iron spheroidizing agent and the silicon barium alloy inoculant into a spheroidizing bag together, covering iron sheets accounting for 0.8-1.2 wt% of the molten iron on the surface, flushing the molten iron smelted in the step two into the spheroidizing bag, and slagging off and preparing for casting after the molten iron is reacted;

step four: casting molding, namely casting the alloy liquid obtained by the spheroidization and inoculation of the step three into a precision casting shell or green sand mold, and obtaining a molded bent pipe after the metal liquid is solidified;

step five: quenching, namely carrying out isothermal quenching heat treatment process on the formed bent pipe obtained in the step four at 230-300 ℃;

step six: coating the wear-resistant hard phase, mixing the aluminum oxide and the titanium diboride powder, spraying the mixture on the surface of the bent pipe prepared in the step five by using a spraying machine, and drying the sprayed bent pipe in an oven at 40-80 ℃ for 3-6 h;

step seven: and (4) dip-coating, namely dipping the elbow pipe dried in the sixth step into a hot-melt Teflon material, taking out after dip-coating, and naturally cooling to obtain the wear-resistant elbow pipe.

Technical Field

The invention relates to the technical field of preparation of wear-resistant bent pipe materials, in particular to a preparation process of a wear-resistant bent pipe material.

Background

Pipeline transportation has become a transport industry developed by countries in the world due to the advantages of low investment, strong adaptability to terrain, small land occupation, environmental friendliness (continuous closed operation), reliable technology, high automation degree and low operation cost. Particularly, for the transportation of solid particle-containing liquid media, powder and other substances, a large number of wear-resistant pipelines are needed, such as the transportation pipelines of coal and water mixtures in the fields of coal water slurry, mine coal powder and dense medium coal separation in the coal industry; a fly ash conveying and deslagging pipeline in the thermal power industry; mineral powder, concentrate and tailing conveying pipelines in the metallurgical mine industry; pipelines for blast furnace coal injection, slag conveying and the like in iron and steel industry, and ferroalloy conveying pipelines in steel making and the like; raw slurry conveying and coal powder conveying pipelines, finished cement pneumatic conveying loading and unloading and concrete conveying pipelines of a rotary kiln wet process production line in the cement industry; chemical plant coal powder, silicon powder and other raw material conveying pipelines; the traditional pipeline connecting bent pipe has poor wear resistance and is easy to adhere materials when the materials are conveyed; therefore, the invention provides a preparation process of a wear-resistant bent pipe material.

Disclosure of Invention

The invention aims to provide a preparation process of a wear-resistant bent pipe material, which aims to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: the formula of the wear-resistant elbow material comprises the following components: 3.3-3.7% of carbon, 2.3-2.8% of silicon, 0.5-1.0% of manganese, 0.4-1.0% of chromium, 0.03-0.06% of phosphorus, 0.01-0.02% of sulfur, 0.03-0.05% of magnesium, 0.01-0.02% of cerium, 0.3-1.0% of vanadium, 0.3-1.0% of neodymium, 4-6% of aluminum oxide, 3-6% of titanium diboride and the balance of iron.

Preferably, the alloy comprises 3.3% of carbon, 2.8% of silicon, 0.5% of manganese, 1.0% of chromium, 0.03% of phosphorus, 0.02% of sulfur, 0.03% of magnesium, 0.02% of cerium, 0.3% of vanadium, 1.0% of neodymium, 4% of aluminum oxide, 6% of titanium diboride and the balance of iron.

Preferably, the alloy comprises 3.7% of carbon, 2.3% of silicon, 1.0% of manganese, 0.4% of chromium, 0.06% of phosphorus, 0.01% of sulfur, 0.05% of magnesium, 0.01% of cerium, 1.0% of vanadium, 0.3% of neodymium, 6% of aluminum oxide, 3% of titanium diboride and the balance of iron.

Preferably, the alloy comprises 3.4% of carbon, 2.4% of silicon, 0.7% of manganese, 0.6% of chromium, 0.04% of phosphorus, 0.01% of sulfur, 0.04% of magnesium, 0.01% of cerium, 0.5% of vanadium, 0.6% of neodymium, 5% of aluminum oxide, 4% of titanium diboride and the balance of iron.

Preferably, the alloy comprises 3.6% of carbon, 2.6% of silicon, 0.9% of manganese, 0.8% of chromium, 0.05% of phosphorus, 0.02% of sulfur, 0.04% of magnesium, 0.02% of cerium, 0.7% of vanadium, 0.8% of neodymium, 5% of aluminum oxide, 5% of titanium diboride and the balance of iron.

The preparation process of the wear-resistant elbow material comprises the following steps:

the method comprises the following steps: quantitative weighing, namely weighing all the raw materials according to the components;

step two: smelting raw materials, namely smelting the prepared raw materials in the step one by using a medium-frequency induction furnace, and tapping iron into a spheroidizing ladle when the smelting temperature of molten iron reaches 1500-1550 ℃;

step three: spheroidizing and inoculating, namely weighing a rare earth magnesium silicon iron spheroidizing agent accounting for 1.2-1.6 wt% of the molten iron and a silicon barium alloy inoculant accounting for 0.4-0.8 wt% of the molten iron, adding the rare earth magnesium silicon iron spheroidizing agent and the silicon barium alloy inoculant into a spheroidizing bag together, covering iron sheets accounting for 0.8-1.2 wt% of the molten iron on the surface, flushing the molten iron smelted in the step two into the spheroidizing bag, and slagging off and preparing for casting after the molten iron is reacted;

step four: casting molding, namely casting the alloy liquid obtained by the spheroidization and inoculation of the step three into a precision casting shell or green sand mold, and obtaining a molded bent pipe after the metal liquid is solidified;

step five: quenching, namely carrying out isothermal quenching heat treatment process on the formed bent pipe obtained in the step four at 230-300 ℃;

step six: coating the wear-resistant hard phase, mixing the aluminum oxide and the titanium diboride powder, spraying the mixture on the surface of the bent pipe prepared in the step five by using a spraying machine, and drying the sprayed bent pipe in an oven at 40-80 ℃ for 3-6 h;

step seven: and (4) dip-coating, namely dipping the elbow pipe dried in the sixth step into a hot-melt Teflon material, taking out after dip-coating, and naturally cooling to obtain the wear-resistant elbow pipe.

Compared with the prior art, the invention has the beneficial effects that: the wear-resistant elbow material prepared by the invention is greatly improved, the wear resistance of the elbow is improved through the wear-resistant hard phase mixed by the aluminum oxide and the titanium diboride, and the adhesion of materials is reduced by dip-coating a layer of teflon on the inner wall of the elbow, so that the wear-resistant elbow is not only suitable for conveying hard substances, but also suitable for conveying soft materials.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example one

The invention provides a technical scheme that: the formula of the wear-resistant elbow material comprises the following components: 3.3% of carbon, 2.8% of silicon, 0.5% of manganese, 1.0% of chromium, 0.03% of phosphorus, 0.02% of sulfur, 0.03% of magnesium, 0.02% of cerium, 0.3% of vanadium, 1.0% of neodymium, 4% of aluminum oxide, 6% of titanium diboride and the balance of iron.

The preparation process of the wear-resistant elbow material comprises the following steps:

the method comprises the following steps: quantitative weighing, namely weighing all the raw materials according to the components;

step two: smelting raw materials, namely smelting the prepared raw materials in the step one by using a medium-frequency induction furnace, and tapping iron into a spheroidizing ladle when the smelting temperature of molten iron reaches 1500 ℃;

step three: spheroidizing and inoculating, namely weighing a rare earth magnesium silicon iron spheroidizing agent accounting for 1.2 percent of the weight of the molten iron and a silicon barium alloy inoculant accounting for 0.4 percent of the weight of the molten iron, adding the rare earth magnesium silicon iron spheroidizing agent and the silicon barium alloy inoculant into a spheroidizing bag together, covering iron sheets accounting for 0.8 percent of the weight of the molten iron on the surface, flushing the molten iron smelted in the step two into the spheroidizing bag, and slagging off after the molten iron is reacted to prepare for casting;

step four: casting molding, namely casting the alloy liquid obtained by the spheroidization and inoculation of the step three into a precision casting shell or green sand mold, and obtaining a molded bent pipe after the metal liquid is solidified;

step five: quenching, namely performing isothermal quenching heat treatment process on the formed bent pipe obtained in the step four at 230 ℃;

step six: coating the wear-resistant hard phase, mixing the aluminum oxide and the titanium diboride powder, spraying the mixture on the surface of the bent pipe prepared in the step five by using a spraying machine, and drying the sprayed bent pipe in an oven at 40 ℃ for 3 hours;

step seven: and (4) dip-coating, namely dipping the elbow pipe dried in the sixth step into a hot-melt Teflon material, taking out after dip-coating, and naturally cooling to obtain the wear-resistant elbow pipe.

Example two

The invention provides a technical scheme that: the formula of the wear-resistant elbow material comprises the following components: 3.7% of carbon, 2.3% of silicon, 1.0% of manganese, 0.4% of chromium, 0.06% of phosphorus, 0.01% of sulfur, 0.05% of magnesium, 0.01% of cerium, 1.0% of vanadium, 0.3% of neodymium, 6% of aluminum oxide, 3% of titanium diboride and the balance of iron.

The preparation process of the wear-resistant elbow material comprises the following steps:

the method comprises the following steps: quantitative weighing, namely weighing all the raw materials according to the components;

step two: smelting raw materials, namely smelting the prepared raw materials in the step one by using a medium-frequency induction furnace, and tapping iron into a spheroidizing ladle when the smelting temperature of molten iron reaches 1550 ℃;

step three: spheroidizing and inoculating, namely weighing a rare earth magnesium silicon iron spheroidizing agent accounting for 1.6 percent of the weight of the molten iron and a silicon barium alloy inoculant accounting for 0.8 percent of the weight of the molten iron, adding the rare earth magnesium silicon iron spheroidizing agent and the silicon barium alloy inoculant into a spheroidizing bag together, covering the surface with iron sheets accounting for 1.2 percent of the weight of the molten iron, flushing the molten iron smelted in the step two into the spheroidizing bag, and slagging off after the molten iron is reacted to prepare for casting;

step four: casting molding, namely casting the alloy liquid obtained by the spheroidization and inoculation of the step three into a precision casting shell or green sand mold, and obtaining a molded bent pipe after the metal liquid is solidified;

step five: quenching, namely performing isothermal quenching heat treatment process on the formed bent pipe obtained in the step four at 230 ℃;

step six: coating the wear-resistant hard phase, mixing the aluminum oxide and the titanium diboride powder, spraying the mixture on the surface of the bent pipe prepared in the step five by using a spraying machine, and drying the sprayed bent pipe in an oven at 80 ℃ for 6 hours;

step seven: and (4) dip-coating, namely dipping the elbow pipe dried in the sixth step into a hot-melt Teflon material, taking out after dip-coating, and naturally cooling to obtain the wear-resistant elbow pipe.

EXAMPLE III

The invention provides a technical scheme that: the formula of the wear-resistant elbow material comprises the following components: 3.4% of carbon, 2.4% of silicon, 0.7% of manganese, 0.6% of chromium, 0.04% of phosphorus, 0.01% of sulfur, 0.04% of magnesium, 0.01% of cerium, 0.5% of vanadium, 0.6% of neodymium, 5% of aluminum oxide, 4% of titanium diboride and the balance of iron.

The preparation process of the wear-resistant elbow material comprises the following steps:

the method comprises the following steps: quantitative weighing, namely weighing all the raw materials according to the components;

step two: smelting raw materials, namely smelting the prepared raw materials in the step one by using a medium-frequency induction furnace, and tapping iron into a spheroidizing ladle when the smelting temperature of molten iron reaches 1520 ℃;

step three: spheroidizing and inoculating, namely weighing a rare earth magnesium silicon iron spheroidizing agent accounting for 1.4 percent of the weight of the molten iron and a silicon barium alloy inoculant accounting for 0.5 percent of the weight of the molten iron, adding the rare earth magnesium silicon iron spheroidizing agent and the silicon barium alloy inoculant into a spheroidizing bag together, covering the surface with iron sheets accounting for 0.9 percent of the weight of the molten iron, flushing the molten iron smelted in the step two into the spheroidizing bag, and slagging off after the molten iron is reacted to prepare for casting;

step four: casting molding, namely casting the alloy liquid obtained by the spheroidization and inoculation of the step three into a precision casting shell or green sand mold, and obtaining a molded bent pipe after the metal liquid is solidified;

step five: quenching, namely performing isothermal quenching heat treatment process on the formed bent pipe obtained in the step four at 260 ℃;

step six: coating the wear-resistant hard phase, mixing the aluminum oxide and the titanium diboride powder, spraying the mixture on the surface of the bent pipe prepared in the step five by using a spraying machine, and drying the sprayed bent pipe in an oven at 50 ℃ for 3-6 h;

step seven: and (4) dip-coating, namely dipping the elbow pipe dried in the sixth step into a hot-melt Teflon material, taking out after dip-coating, and naturally cooling to obtain the wear-resistant elbow pipe.

Example four

The invention provides a technical scheme that: the formula of the wear-resistant elbow material comprises the following components: 3.6% of carbon, 2.6% of silicon, 0.9% of manganese, 0.8% of chromium, 0.05% of phosphorus, 0.02% of sulfur, 0.04% of magnesium, 0.02% of cerium, 0.7% of vanadium, 0.8% of neodymium, 5% of aluminum oxide, 5% of titanium diboride and the balance of iron.

The preparation process of the wear-resistant elbow material comprises the following steps:

the method comprises the following steps: quantitative weighing, namely weighing all the raw materials according to the components;

step two: smelting raw materials, namely smelting the prepared raw materials in the step one by using a medium-frequency induction furnace, and tapping iron into a spheroidizing ladle when the smelting temperature of molten iron reaches 1540 ℃;

step three: spheroidizing and inoculating, namely weighing a rare earth magnesium silicon iron spheroidizing agent accounting for 1.5 percent of the weight of the molten iron and a silicon barium alloy inoculant accounting for 0.7 percent of the weight of the molten iron, adding the rare earth magnesium silicon iron spheroidizing agent and the silicon barium alloy inoculant into a spheroidizing bag together, covering the surface with iron sheets accounting for 1.1 percent of the weight of the molten iron, flushing the molten iron smelted in the step two into the spheroidizing bag, and slagging off after the molten iron is reacted to prepare for casting;

step four: casting molding, namely casting the alloy liquid obtained by the spheroidization and inoculation of the step three into a precision casting shell or green sand mold, and obtaining a molded bent pipe after the metal liquid is solidified;

step five: quenching, namely carrying out isothermal quenching heat treatment process on the formed bent pipe obtained in the step four at 280 ℃;

step six: coating the wear-resistant hard phase, mixing the aluminum oxide powder and the titanium diboride powder, spraying the mixed material on the surface of the bent pipe prepared in the step five by using a spraying machine, and drying the sprayed bent pipe in an oven at 70 ℃ for 5 hours;

step seven: and (4) dip-coating, namely dipping the elbow pipe dried in the sixth step into a hot-melt Teflon material, taking out after dip-coating, and naturally cooling to obtain the wear-resistant elbow pipe.

The wear-resisting properties of the four groups of wear-resisting bent pipe materials are improved, so that the scheme has good popularization value.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.