阅读说明：本技术 一种纺织机械用耐磨高寿命的镁合金材料及其制备方法 (Wear-resistant long-life magnesium alloy material for textile machinery and preparation method thereof ) 是由 蔡永保 徐洪波 翟莉 汪娟 于 2019-09-29 设计创作，主要内容包括：本发明公开了一种纺织机械用耐磨高寿命的镁合金材料,包括以下重量百分比的原料：Al 5.15-5.19％、Ce 1.52-1.54％、Mn 0.28-0.34％、Sc 0.6-0.9％、Y 0.4-0.7％、Re 0.15-0.19％、余量为Mg。本发明Y、Re能够提高原料之间相互活性,从而增强原料配比效果,添加Ce可细化晶粒尺寸,同时促进次生α相较叉排列,从而与烧结助剂起到协同作用,烧结助剂中的Si具有高流动性,携带Ti对基体材料起到润滑效果,降低摩擦系数。(The invention discloses a wear-resistant long-life magnesium alloy material for textile machinery, which comprises the following raw materials in percentage by weight: 5.15 to 5.19 percent of Al, 1.52 to 1.54 percent of Ce, 0.28 to 0.34 percent of Mn, 0.6 to 0.9 percent of Sc, 0.4 to 0.7 percent of Y, 0.15 to 0.19 percent of Re and the balance of Mg. According to the invention, Y, Re can improve the mutual activity among raw materials, so that the raw material proportioning effect is enhanced, the addition of Ce can refine the grain size, and the secondary alpha phase cross arrangement is promoted, so that the synergistic effect is achieved with the sintering aid, Si in the sintering aid has high fluidity, and Ti is carried to play a lubricating effect on a base material, so that the friction coefficient is reduced.)

1. The wear-resistant long-life magnesium alloy material for textile machinery is characterized by comprising the following raw materials in percentage by weight:

5.15 to 5.19 percent of Al, 1.52 to 1.54 percent of Ce, 0.28 to 0.34 percent of Mn, 0.6 to 0.9 percent of Sc, 0.4 to 0.7 percent of Y, 0.15 to 0.19 percent of Re and the balance of Mg.

2. The wear-resistant long-life magnesium alloy material for textile machinery according to claim 1, which is characterized by comprising the following raw materials in parts by weight:

5.17 percent of Al, 1.53 percent of Ce, 0.31 percent of Mn, 0.75 percent of Sc, 0.55 percent of Y, 0.17 percent of Re and the balance of Mg.

3. The wear-resistant long-life magnesium alloy material for textile machinery as claimed in claim 1, wherein a sintering aid is further added to the wear-resistant long-life magnesium alloy material for textile machinery, and the amount of the sintering aid is 10-20% of the total amount of Mg.

4. The wear-resistant long-life magnesium alloy material for textile machinery as claimed in claim 3, wherein the sintering aid is prepared by mixing Cr₃C₂And adding the Si powder and the Ti powder into a smelting furnace according to the weight ratio of 3:2:1 for smelting treatment, wherein the smelting temperature is 1000-1400 ℃, the smelting time is 1-2h, and the sintering aid is obtained after the smelting is finished.

5. The wear-resistant long-life magnesium alloy material for textile machinery according to claim 1, characterized in that a wear-resistant reinforcing agent with 10% of the total amount of Mg and a spraying liquid with 30-40% of the total amount of Mg are further added into the wear-resistant long-life magnesium alloy material for textile machinery.

6. The wear-resistant long-life magnesium alloy material for the textile machinery as claimed in claim 5, wherein the preparation method of the wear-resistant reinforcing agent is that the spiral carbon nanotube is added into a magnetic stirrer, then acetone solvent is added, then mullite powder and diamond powder are added, stirring is carried out for 10-20min at a rotating speed of 100-200r/min, and finally ultrasonic dispersion is carried out for 1h at a power of 200W.

7. According to the rightThe wear-resistant long-life magnesium alloy material for textile machinery according to claim 5, wherein the preparation method of the spraying liquid is to mix MoS₂And smelting the powder and the aluminum borate whisker at 1500 ℃, cooling to room temperature after smelting for 20min, and then ball-milling through a 10-mesh sieve.

8. A method for producing the wear-resistant long-life magnesium alloy material for textile machinery according to any one of claims 1 to 7, characterized by comprising the steps of:

weighing raw materials of each component according to requirements;

step two, sequentially adding Al, Ce, Mn, Sc, Y, Re and Mg into a smelting furnace, smelting at the temperature of 1500-1700 ℃ for 25-35min, and then cooling to room temperature for molding;

step three, sintering the molding material obtained in the step two and a sintering aid at the sintering temperature of 900-1000 ℃ and under the pressure of 8-12MPa in the sintering process to obtain a sintered material A;

step four, carrying out laser cladding treatment on the sintering material A in step three, wherein the laser power is 1-2KW, the cladding speed is 1-3mm/s, the laser spot diameter is 3-5mm, and feeding powder to the wear-resistant reinforcing agent in a coaxial powder feeding mode;

fifthly, after powder feeding is finished, ultraviolet light irradiation treatment is firstly adopted for 10-20min, then heat treatment is carried out, the temperature is firstly increased to 700 ℃ at the speed of 10 ℃/min, heat preservation is carried out for 10-20min, then the temperature is increased to 450 ℃ at the speed of 2 ℃/min, heat preservation is carried out for 35-45min, and then air cooling is carried out to the room temperature;

step six, spraying the spraying liquid on the alloy material in the step five through a spraying process, and finally bombarding for 10-20min at the voltage of 200-300V every 5min for 1h in total, and obtaining a bombarded material B after the bombarding is finished;

and seventhly, performing secondary sintering treatment on the bombarding material, wherein the sintering temperature is 1100 ℃, the sintering pressure is 10MPa, and cooling to room temperature after sintering is finished to obtain the magnesium alloy material.

9. The method for preparing the wear-resistant long-life magnesium alloy material for the textile machinery according to claim 8, wherein the conditions of powder feeding of the wear-resistant reinforcing agent are that the powder feeding rate is 10-14g/min and the argon flow is 10L/min.

10. The method for preparing the wear-resistant long-life magnesium alloy material for textile machinery as claimed in claim 8, wherein the spraying voltage in the spraying process is 30-50KV, and the spraying distance is 100-120 mm.

Technical Field

The invention relates to the technical field of alloy materials for textile machinery, in particular to a wear-resistant long-life magnesium alloy material for textile machinery and a preparation method thereof.

Background

Textile machinery is the various mechanical devices required to process natural or chemical fibers into textiles. The machinery for producing chemical fibers, although including many types of chemical machinery, is now considered to be an extension of textile machinery and is a broad category of textile machinery. The different fibers such as cotton, hemp, silk and wool are processed into textiles by different procedures, and the required machines are various and various. Textile machines are generally classified according to production processes and include spinning devices, weaving devices, printing devices, finishing devices, chemical fiber drawing devices, reeling devices, and non-woven fabric devices.

The magnesium alloy is formed by adding other elements into magnesium as a base. The method is characterized in that: the aluminum alloy has the advantages of low density, high specific strength, high specific modulus, good heat dissipation, good shock absorption, high impact load bearing capacity compared with aluminum alloy, and good organic matter and alkali corrosion resistance. The main alloy elements comprise aluminum, zinc, manganese, cerium, thorium, a small amount of zirconium or cadmium and the like. Currently, the most widely used are magnesium-aluminum alloys, followed by magnesium-manganese alloys and magnesium-zinc-zirconium alloys. The method is mainly used in aviation, aerospace, transportation, chemical engineering, rocket and other industrial departments. The lightest of the practical metals, magnesium has a specific gravity of about 2/3 for aluminum and 1/4 for iron. It is the lightest metal of practical metals, and has high strength and high rigidity.

The prior magnesium alloy has poor wear resistance, is applied to textile machinery, and is not suitable for the textile machinery due to poor wear resistance and short service life.

The prior Chinese patent literature publication numbers are as follows: CN107099713A discloses a magnesium alloy and a preparation method and application thereof, in particular to a wear-resistant magnesium alloy, a magnesium alloy surfacing welding wire and a preparation method thereof, belonging to the technical field of metal materials and metallurgy, the magnesium alloy comprises the following chemical components in percentage by mass: al7.98-9.31%, Zn0.19-1.52%, Mn0.10-0.61%, Gd0.80-1.89%, Y0.40-1.49%, and the balance of Mg; the magnesium alloy gives the material of the alloy, the raw material is more conventional, and the preparation process is not suitable for being applied to textile machinery.

Disclosure of Invention

The invention aims to provide a wear-resistant long-life magnesium alloy material for textile machinery and a preparation method thereof, and aims to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

the wear-resistant long-life magnesium alloy material for textile machinery comprises the following raw materials in percentage by weight:

5.15 to 5.19 percent of Al, 1.52 to 1.54 percent of Ce, 0.28 to 0.34 percent of Mn, 0.6 to 0.9 percent of Sc, 0.4 to 0.7 percent of Y, 0.15 to 0.19 percent of Re and the balance of Mg.

The invention further comprises the following steps: the wear-resistant long-life magnesium alloy material for the textile machinery comprises the following raw materials in parts by weight:

5.17 percent of Al, 1.53 percent of Ce, 0.31 percent of Mn, 0.75 percent of Sc, 0.55 percent of Y, 0.17 percent of Re and the balance of Mg.

The invention further comprises the following steps: the wear-resistant long-life magnesium alloy material for textile machinery is also added with a sintering aid, and the amount of the sintering aid is 10-20% of the total amount of Mg.

The invention further comprises the following steps: the preparation method of the sintering aid comprises the step of mixing Cr₃C₂And adding the Si powder and the Ti powder into a smelting furnace according to the weight ratio of 3:2:1 for smelting treatment, wherein the smelting temperature is 1000-1400 ℃, the smelting time is 1-2h, and the sintering aid is obtained after the smelting is finished.

The invention further comprises the following steps: the wear-resistant long-life magnesium alloy material for textile machinery is also added with a wear-resistant reinforcing agent accounting for 10% of the total amount of Mg and a spraying liquid accounting for 30-40% of the total amount of Mg.

The invention further comprises the following steps: the preparation method of the wear-resistant reinforcing agent comprises the steps of adding the spiral carbon nano tube into a magnetic stirrer, then adding the acetone solvent, then adding the mullite powder and the diamond powder, stirring at the rotating speed of 100-200r/min for 10-20min, and finally carrying out ultrasonic dispersion at the power of 200W for 1 h.

The invention further comprises the following steps: the preparation method of the spraying liquid comprises the step of mixing MoS₂And smelting the powder and the aluminum borate whisker at 1500 ℃, cooling to room temperature after smelting for 20min, and then ball-milling through a 10-mesh sieve.

The invention also provides a method for preparing the wear-resistant long-life magnesium alloy material for textile machinery, which comprises the following steps:

weighing raw materials of each component according to requirements;

step two, sequentially adding Al, Ce, Mn, Sc, Y, Re and Mg into a smelting furnace, smelting at the temperature of 1500-1700 ℃ for 25-35min, and then cooling to room temperature for molding;

step three, sintering the molding material obtained in the step two and a sintering aid at the sintering temperature of 900-1000 ℃ and under the pressure of 8-12MPa in the sintering process to obtain a sintered material A;

step four, carrying out laser cladding treatment on the sintering material A in step three, wherein the laser power is 1-2KW, the cladding speed is 1-3mm/s, the laser spot diameter is 3-5mm, and feeding powder to the wear-resistant reinforcing agent in a coaxial powder feeding mode;

fifthly, after powder feeding is finished, ultraviolet light irradiation treatment is firstly adopted for 10-20min, then heat treatment is carried out, the temperature is firstly increased to 700 ℃ at the speed of 10 ℃/min, heat preservation is carried out for 10-20min, then the temperature is increased to 450 ℃ at the speed of 2 ℃/min, heat preservation is carried out for 35-45min, and then air cooling is carried out to the room temperature;

step six, spraying the spraying liquid on the alloy material in the step five through a spraying process, and finally bombarding for 10-20min at the voltage of 200-300V every 5min for 1h in total, and obtaining a bombarded material B after the bombarding is finished;

and seventhly, performing secondary sintering treatment on the bombarding material, wherein the sintering temperature is 1100 ℃, the sintering pressure is 10MPa, and cooling to room temperature after sintering is finished to obtain the magnesium alloy material.

The invention further comprises the following steps: the powder feeding conditions of the wear-resistant reinforcing agent are that the powder feeding rate is 10-14g/min and the argon flow is 10L/min.

The invention further comprises the following steps: the spraying voltage in the spraying process is 30-50KV, and the spraying distance is 100-120 mm.

Compared with the prior art, the invention has the following beneficial effects:

(1) the Y, Re of the invention can improve the mutual activity among raw materials, thereby enhancing the proportioning effect of the raw materials, the addition of Ce can refine the grain size, and simultaneously promote the cross arrangement of the secondary alpha phase, thereby playing a synergistic role with the sintering aid, Si in the sintering aid has high fluidity, carrying Ti has a lubricating effect on a base material, reducing the friction coefficient, and Ti and Ce act togetherGreatly improves the wear-resisting effect and simultaneously Cr is added in the sintering process₃C₂Has a compact effect on the base material and further improves the wear resistance.

(2) According to the invention, Al, Ce, Mn, Sc, Y, Re and Mg are used as alloy matrix raw materials, then sintering is carried out, the density of the alloy is improved, then laser cladding treatment is carried out, a coaxial powder feeding mode is adopted to coat the wear-resistant reinforcing agent, the irradiation and heat treatment modes are adopted after the coating is finished, so that the compatibility of the coating of the wear-resistant reinforcing agent and the matrix is improved, and the coating and the matrix form a better integrated structure, so that the wear-resistant effect is obviously improved, meanwhile, the spraying liquid and the coating of the wear-resistant reinforcing agent are better compatible, so that the matrix can be better integrally protected, voltage bombardment is adopted after the spraying liquid forms a spraying layer, the tolerance of the alloy is greatly improved, the wear-resistant effect of the alloy is further improved, and finally secondary sintering is carried out, the tightness between the coatings of the alloy materials is perfected, and the wear.

(3) The spiral carbon nanotube in the wear-resistant reinforcing agent has high specific surface area, can improve the coating efficiency of mullite powder and diamond powder on an alloy matrix, the alloy matrix adopts a matrix-wear-resistant reinforcing agent-spraying liquid form to form an integral structure, the spiral carbon nanotube is used as a raw material in the wear-resistant reinforcing agent, the contact effect between coatings is improved, and further the bonding strength is improved, so that the wear-resistant reinforcing agent as an intermediate can greatly improve the wear resistance of the alloy, and is finally coated by wear-resistant metal powder in the spraying liquid, so that the ring coating protection effect is achieved, and the wear resistance is obviously improved.

Detailed Description

The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to specific embodiments, 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.