阅读说明：本技术 一种多层结构TiNiVTaW基自润滑导轨材料的制备方法 (Preparation method of TiNiVTaW-based self-lubricating guide rail material with multilayer structure ) 是由 王艳博 李琼 郭娇 陈改荣 陈磊山 贾蒙 于涛 于 2019-10-08 设计创作，主要内容包括：本发明公开了一种多层结构TiNiVTaW基自润滑导轨材料的制备方法,具体过程为：以TiNiVTaW基体合金、SnAgPt合金和多元复合材料为原料,通过逐层设计、分层配比、分层制备、样品处理及叠加成型工艺制得多层结构TiNiVTaW基自润滑导轨材料。本发明所制备的多层复合结构TiNiVTaW基自润滑导轨材料既能满足导轨材料各部分性能要求,又能节省材料相对用量,并且能够显著增强承载能力、抗压能力与耐高温与耐腐蚀等性能。(The invention discloses a preparation method of a TiNiVTaW-based self-lubricating guide rail material with a multilayer structure, which comprises the following specific steps: the TiNiVTaW-based self-lubricating guide rail material with the multilayer structure is prepared by using TiNiVTaW base alloy, SnAgPt alloy and a multi-element composite material as raw materials through the processes of layer-by-layer design, layer-by-layer proportioning, layer-by-layer preparation, sample treatment and superposition molding. The TiNiVTaW-based self-lubricating guide rail material with the multilayer composite structure prepared by the invention can meet the performance requirements of all parts of the guide rail material, can save the relative consumption of materials, and can obviously enhance the performances such as bearing capacity, pressure resistance, high temperature resistance, corrosion resistance and the like.)

1. A preparation method of a TiNiVTaW-based self-lubricating guide rail material with a multilayer structure is characterized by comprising the following specific steps: the TiNiVTaW-based self-lubricating guide rail material with the multilayer structure is prepared by using TiNiVTaW base alloy, SnAgPt alloy and a multi-element composite material as raw materials through the processes of layer-by-layer design, layer-by-layer proportioning, layer-by-layer preparation, sample treatment and superimposed molding, and has the friction coefficient of 0.14-0.29 and the wear rate of (2.62-3.53) multiplied by 10^{- 7}cm³·N^-1·m^-1。

2. The method for preparing the TiNiVTaW-based self-lubricating guide rail material with the multilayer structure according to claim 1, wherein the TiNiVTaW-based self-lubricating guide rail material with the multilayer composite structure comprises four layers of composite structures, and the thickness of each layer of composite structure accounts for the total thickness in percentage:

the first layer, namely the friction film contact layer, is 5-10%, the volume fraction of TiNiVTaW matrix alloy in the first layer is 4-6%, the volume fraction of SnAgPt alloy is 35-40%, and the volume fraction of the multi-element composite material is 54-61%;

the second layer, namely the friction film supporting layer, is 8-12%, the volume fraction of TiNiVTaW matrix alloy in the second layer is 10-15%, the volume fraction of SnAgPt alloy is 35-40%, and the volume fraction of the multi-element composite material is 45-60%;

the third layer, namely the friction film transition layer, is 20-25 percent, the volume fraction of TiNiVTaW matrix alloy in the third layer is 45-65 percent, the volume fraction of SnAgPt alloy is 15-19 percent, and the volume fraction of the multi-component composite material is 30-45 percent;

the fourth layer is 53% -67%, and the fourth layer is TiNiVTaW matrix alloy.

3. The method for preparing the TiNiVTaW-based self-lubricating guide rail material with the multilayer structure according to claim 1, wherein the TiNiVTaW base alloy has different mass ratios in each layer structure, and specifically comprises the following steps:

the TiNiVTaW matrix alloy in the first layer consists of Ti, Ni, V, Ta, W, Si, Mo and Y, and the mass ratio of the elements is 72:13:7.5:3.5:3:0.25:0.3: 0.45;

the TiNiVTaW matrix alloy in the second layer consists of Ti, Ni, V, Ta, W, Si, Mo and Y, and the mass ratio of the elements is 70:12:8:4:4.5:0.48:0.32: 0.7;

the TiNiVTaW matrix alloy in the third layer consists of Ti, Ni, V, Ta, W, Si, Mo and Y, and the mass ratio of the elements is 73:11:8:4:3:0.24:0.31: 0.45;

the TiNiVTaW matrix alloy in the fourth layer consists of Ti, Ni, V, Ta, W, Si, Mo and Y, and the mass ratio of the elements is 75 (5-16): 4-7): 3-6): 2-4): 0.32-0.46): 0.2-0.4): 0.2-0.5.

4. The method for preparing the TiNiVTaW-based self-lubricating guide rail material with the multilayer structure according to claim 1, which is characterized in that: the mass ratio of the SnAgPt alloy composition in each layer structure is the same, and the mass ratio of Sn, Ag and Pt of each element of the SnAgPt alloy in the first layer, the second layer and the third layer is (25-45): (10-35): (35-40).

5. The method for preparing the TiNiVTaW-based self-lubricating guide rail material with the multilayer structure according to claim 1, wherein the volume percentages of the components of the multi-component composite material in each layer structure are different, and specifically the method comprises the following steps:

the multi-element composite material in the first layer consists of 4-8% of tungsten disulfide, 3-7% of molybdenum disulfide, 2-6% of cerium oxide, 4-8% of nano-alumina, 6-15% of ceramic fiber, 3-7% of nano-diamond, 1-1.5% of graphene, 2-3% of epoxy resin, 1-1.5% of graphite, 1-2% of aramid fiber, 1-3% of glass fiber, 2-4% of carbon fiber, 2-3% of butadiene acrylonitrile rubber powder, 1-2.5% of calcite, 1-2.5% of serpentine, 2-4% of nodular cast iron and 5% of multi-layer platy crystal MoWCrO;

the multi-element composite material in the second layer consists of 2-5% of tungsten disulfide, 3-6% of molybdenum disulfide, 3-5% of cerium oxide, 2-4% of nano-alumina, 2.5-6% of ceramic fiber, 4-7% of nano-diamond, 0.3-0.45% of graphene, 2-5% of epoxy resin, 0.5-1.5% of aramid fiber, 0.7-0.9% of glass fiber, 1.5-4% of carbon fiber, 2-3% of butadiene-acrylonitrile rubber powder, 1.5-2% of calcite, 2-4% of brown corundum, 1-3% of nodular cast iron and 2-4.5% of multi-layer platy crystal MoWCrO;

the multi-element composite material in the third layer consists of 1 to 3 percent of tungsten disulfide, 1.5 to 2 percent of molybdenum disulfide, 0.8 to 1.5 percent of cerium oxide, 2 to 4 percent of nano alumina, 4 to 6 percent of nano diamond, 0.2 to 0.5 percent of graphene, 2.5 to 9 percent of ceramic fiber, 1.5 to 4 percent of aramid fiber, 0.9 to 1.2 percent of glass fiber, 1.5 to 2.1 percent of butadiene acrylonitrile rubber powder, 1 to 1.2 percent of calcite, 1.5 to 3 percent of nodular cast iron and 1.5 to 3.5 percent of multilayer platy crystal MorO.

6. The method for preparing the TiNiVTaW-based self-lubricating guide rail material with the multilayer structure as claimed in any one of claims 1 to 5, which is characterized by comprising the following steps:

1) weighing ammonium molybdate powder, tungsten powder and cadmium powder according to the mol ratio of 5 (3-4) (1-2), grinding and mixing the ammonium molybdate powder, the tungsten powder and the cadmium powder, wherein the particle size of the raw materials is 25-30 mu m; then sintering in a vacuum atmosphere furnace, wherein the sintering temperature is 650-750 ℃, the heat preservation time is 3.5-4.5h, the protective gas is argon, oxygen is introduced in the sintering process to enhance the reaction, and the oxygen introduction amount is 65-175mL/min, and finally the multilayer plate-shaped crystal MoWCrO is obtained;

2) weighing the multilayer plate-shaped crystal MoWCrO obtained in the step 1), tungsten disulfide, molybdenum disulfide, cerium oxide, nano alumina, ceramic fiber, nano diamond, graphene, epoxy resin, ceramic fiber, graphite, aramid fiber, glass fiber, carbon fiber, butadiene acrylonitrile rubber powder, calcite, serpentine and nodular cast iron according to the corresponding volume fraction of each layer of structure, and classifying and storing the obtained powder of each layer of the multi-component composite material for later use;

3) mixing the multi-element composite material obtained in the step 2) with TiNiVTaW matrix alloy and SnAgPt alloy according to the volume percentage required by each layer structure: the first layer is made of TiNiVTaW matrix alloy 4-6%, SnAgPt alloy 35-40% and multi-element composite material 54-61%; the second layer is made of 10-15% of TiNiVTaW matrix alloy, 35-40% of SnAgPt alloy and 45-60% of multi-element composite material; the third layer is composed of 45% -65% of TiNiVTaW matrix alloy, 15% -19% of SnAgPt alloy and 30% -45% of multi-element composite material; the fourth layer is 100 percent of TiNiVTaW matrix alloy;

4) heating the first layer of material powder obtained in the step 3) in a vacuum environment, boiling by using alcohol and evaporating in vacuum to realize uniform mixing and vacuum drying, wherein the required condition is that the vacuum degree is (3.2-3.5) multiplied by 10^-2Pa, heating temperature of 55-65 deg.C, boiling time of 15-18 min; heating the second layer of material powder in vacuum environment, boiling with alcohol and vacuum evaporating to realize uniform mixing and vacuum drying under the condition of vacuum degree of 3.5-4.2 x 10^-2Pa, heating at 55-70 deg.C for 18-25 min; mechanically mixing the third layer of material powder by using a vibration mixer under the conditions that the vibration frequency is 45-50Hz, the vibration force is 4500-5500N, and the oscillation time is 40-45 min; the fourth layer of the material powder is mechanically mixed by a vibration mixer, the required conditions are that the vibration frequency is 110-130Hz, the vibration force is 11000-12500N, and the oscillation time is 55-65 min;

5) sequentially carrying out hot-pressing solidification on each layer of powder obtained in the step 4) according to the sequence of one to four layers, pouring each layer of mixed powder into a separate mould according to the corresponding layer thickness for compaction, and the required operation conditions are as follows: the first layer, the pressing pressure is applied to be 20-25MPa, the pressing temperature is 250-300 ℃, the heat preservation and pressure maintaining time is 200-250min each time, the air is released for 4-5s every 30-45s, and the operation is repeatedly carried out for 6-8 times; the second layer, the pressing pressure is 25-28MPa, the pressing temperature is 250-280 ℃, the heat preservation and pressure maintaining time is 110-130min each time, the air is discharged for 1-3s every 25-35s, and the operation is repeatedly carried out for 4-6 times; the third layer, the pressing pressure is 23-25MPa, the pressing temperature is 240 ℃, the heat preservation and pressure maintaining time is 120-140min each time, the air is discharged for 1-2s every 20-30s, and the operation is repeatedly carried out for 4-6 times; the fourth layer, the pressing pressure is 28-32MPa, the pressing temperature is 800-950 ℃, the heat preservation and pressure maintaining time is 100-120min each time, the air is discharged for 2s every 50s, and the operation is repeatedly carried out for 3-5 times;

6) transferring the pressed sheet prepared in the step 5) into a graphite die with the diameter of 30-40mm, and preparing the multilayer composite material by using a spark plasma sintering technology, wherein the spark plasma sintering process requires: the sintering temperature is 1000-1250 ℃, the sintering pressure is 20-25MPa, the heat preservation time is 10-15min, the protective gas is argon, and the heating rate is 200 ℃/min;

7) machining the multilayer composite pressed block prepared in the step 6), and then carrying out disc grinding by using grinding equipment according to the technical requirements, wherein the requirement of the grinding process is that the rotating speed of the equipment is 45-50 r/min; cleaning burrs and fins on the periphery of the guide rail by a polishing machine, carrying out electrostatic spraying at the rotating speed of 440-550r/min and the temperature of 35-400 ℃, and carrying out post-treatment to finally obtain the TiNiVTaW-based self-lubricating guide rail material with the multilayer structure.

Technical Field

The invention belongs to the technical field of self-lubricating guide rail materials, and particularly relates to a preparation method of a TiNiVTaW-based self-lubricating guide rail material with a multilayer structure.

Background

In modern industry, more and more guide rail parts are exposed to a series of extreme working conditions such as ultrahigh temperature, ultrahigh pressure and dustiness. The guide rail parts are contacted with each other in the working process, and the guide rail parts are always in a load bearing state and a wear state due to the incompleteness of a lubricating grease film, so that the working performance of the guide rail on the straightness, the motion precision, the reliability, the service life and the like of the whole mechanical system are directly influenced. Up to now, the most common guide rails are sliding ball guide rails and sliding roller guide rails, the lubrication method is mainly oil lubrication or grease lubrication or solid lubrication such as graphite (plum poplar, bengal, yao ning, senna, cao libang, cao libra, high-strength low-resistance insulation roller guide rail [ J ]. a new product of the chinese technology, 2019(01): 75-76.), and the material of the sliding guide rail must be prepared from materials with excellent properties such as durability, low friction, small abrasion, high temperature resistance and corrosion resistance, which has extremely high requirements on the selection of the material of the guide rail. The TiNiVTaW-based self-lubricating guide rail material with the multilayer composite structure prepared by the invention has different mechanical physical and tribological properties of each layer due to unique component proportion and the like, so that the TiNiVTaW-based self-lubricating guide rail material has excellent lubricating property, good bearing capacity and corrosion resistance, can realize small heat generation and long service life under high and low temperature conditions, and further enhances the engineering application range.

Disclosure of Invention

The invention provides a method for preparing a TiNiVTaW-based self-lubricating guide rail material with a multilayer structure, which takes TiNiVTaW as a matrix, SnAgPt as an anti-wear agent and a multi-component composite material as a reinforcing agent, for solving the defects of the prior art.

The invention adopts the following technical scheme for solving the technical problems, and the preparation method of the TiNiVTaW-based self-lubricating guide rail material with the multilayer structure is characterized by comprising the following specific processes: the TiNiVTaW-based self-lubricating guide rail material with the multilayer structure is prepared by using TiNiVTaW base alloy, SnAgPt alloy and a multi-element composite material as raw materials through the processes of layer-by-layer design, layer-by-layer proportioning, layer-by-layer preparation, sample treatment and superimposed molding, and has the friction coefficient of 0.14-0.29 and the wear rate of (2.62-3.53) multiplied by 10^-7cm³·N^-1·m^-1。

Further preferably, the TiNiVTaW-based self-lubricating guide rail material with the multilayer composite structure comprises a four-layer composite structure, wherein the thickness of each layer of the composite structure accounts for the total thickness percentage:

the first layer, namely the friction film contact layer, is 5-10%, the volume fraction of TiNiVTaW matrix alloy in the first layer is 4-6%, the volume fraction of SnAgPt alloy is 35-40%, and the volume fraction of the multi-element composite material is 54-61%;

the second layer, namely the friction film supporting layer, is 8-12%, the volume fraction of TiNiVTaW matrix alloy in the second layer is 10-15%, the volume fraction of SnAgPt alloy is 35-40%, and the volume fraction of the multi-element composite material is 45-60%;

the third layer, namely the friction film transition layer, is 20-25 percent, the volume fraction of TiNiVTaW matrix alloy in the third layer is 45-65 percent, the volume fraction of SnAgPt alloy is 15-19 percent, and the volume fraction of the multi-component composite material is 30-45 percent;

the fourth layer is 53% -67%, and the fourth layer is TiNiVTaW matrix alloy.

Further preferably, the TiNiVTaW matrix alloy has different compositions in each layer structure according to different mass ratios, specifically:

the TiNiVTaW matrix alloy in the first layer consists of Ti, Ni, V, Ta, W, Si, Mo and Y, and the mass ratio of the elements is 72:13:7.5:3.5:3:0.25:0.3: 0.45;

the TiNiVTaW matrix alloy in the second layer consists of Ti, Ni, V, Ta, W, Si, Mo and Y, and the mass ratio of the elements is 70:12:8:4:4.5:0.48:0.32: 0.7;

the TiNiVTaW matrix alloy in the third layer consists of Ti, Ni, V, Ta, W, Si, Mo and Y, and the mass ratio of the elements is 73:11:8:4:3:0.24:0.31: 0.45;

the TiNiVTaW matrix alloy in the fourth layer consists of Ti, Ni, V, Ta, W, Si, Mo and Y, and the mass ratio of the elements is 75 (5-16): 4-7): 3-6): 2-4): 0.32-0.46): 0.2-0.4): 0.2-0.5.

Further preferably, the mass ratio of the SnAgPt alloy composition in each layer structure is the same, and the mass ratio of Sn, Ag and Pt of each element of the SnAgPt alloy in the first layer, the second layer and the third layer is (25-45): 10-35): 35-40.

Further preferably, the volume percentages of the components of the multi-component composite material in each layer structure are different, specifically:

the multi-element composite material in the first layer consists of 4-8% of tungsten disulfide, 3-7% of molybdenum disulfide, 2-6% of cerium oxide, 4-8% of nano-alumina, 6-15% of ceramic fiber, 3-7% of nano-diamond, 1-1.5% of graphene, 2-3% of epoxy resin, 1-1.5% of graphite, 1-2% of aramid fiber, 1-3% of glass fiber, 2-4% of carbon fiber, 2-3% of butadiene acrylonitrile rubber powder, 1-2.5% of calcite, 1-2.5% of serpentine, 2-4% of nodular cast iron and 5% of multi-layer platy crystal MoWCrO;

the multi-element composite material in the second layer consists of 2-5% of tungsten disulfide, 3-6% of molybdenum disulfide, 3-5% of cerium oxide, 2-4% of nano-alumina, 2.5-6% of ceramic fiber, 4-7% of nano-diamond, 0.3-0.45% of graphene, 2-5% of epoxy resin, 0.5-1.5% of aramid fiber, 0.7-0.9% of glass fiber, 1.5-4% of carbon fiber, 2-3% of butadiene-acrylonitrile rubber powder, 1.5-2% of calcite, 2-4% of brown corundum, 1-3% of nodular cast iron and 2-4.5% of multi-layer platy crystal MoWCrO;

the multi-element composite material in the third layer consists of 1 to 3 percent of tungsten disulfide, 1.5 to 2 percent of molybdenum disulfide, 0.8 to 1.5 percent of cerium oxide, 2 to 4 percent of nano alumina, 4 to 6 percent of nano diamond, 0.2 to 0.5 percent of graphene, 2.5 to 9 percent of ceramic fiber, 1.5 to 4 percent of aramid fiber, 0.9 to 1.2 percent of glass fiber, 1.5 to 2.1 percent of butadiene acrylonitrile rubber powder, 1 to 1.2 percent of calcite, 1.5 to 3 percent of nodular cast iron and 1.5 to 3.5 percent of multilayer platy crystal MorO.

Further preferably, the preparation method of the TiNiVTaW-based self-lubricating guide rail material with the multilayer structure is characterized by comprising the following specific steps of:

1) weighing ammonium molybdate powder, tungsten powder and cadmium powder according to the mol ratio of 5 (3-4) (1-2), grinding and mixing the ammonium molybdate powder, the tungsten powder and the cadmium powder, wherein the particle size of the raw materials is 25-30 mu m; then sintering in a vacuum atmosphere furnace, wherein the sintering temperature is 650-750 ℃, the heat preservation time is 3.5-4.5h, the protective gas is argon, oxygen is introduced in the sintering process to enhance the reaction, and the oxygen introduction amount is 65-175mL/min, and finally the multilayer plate-shaped crystal MoWCrO is obtained;

2) weighing the multilayer plate-shaped crystal MoWCrO obtained in the step 1), tungsten disulfide, molybdenum disulfide, cerium oxide, nano alumina, ceramic fiber, nano diamond, graphene, epoxy resin, ceramic fiber, graphite, aramid fiber, glass fiber, carbon fiber, butadiene acrylonitrile rubber powder, calcite, serpentine and nodular cast iron according to the corresponding volume fraction of each layer of structure, and classifying and storing the obtained powder of each layer of the multi-component composite material for later use;

3) mixing the multi-element composite material obtained in the step 2) with TiNiVTaW matrix alloy and SnAgPt alloy according to the volume percentage required by each layer structure: the first layer is made of TiNiVTaW matrix alloy 4-6%, SnAgPt alloy 35-40% and multi-element composite material 54-61%; the second layer is made of 10-15% of TiNiVTaW matrix alloy, 35-40% of SnAgPt alloy and 45-60% of multi-element composite material; the third layer is composed of 45% -65% of TiNiVTaW matrix alloy, 15% -19% of SnAgPt alloy and 30% -45% of multi-element composite material; the fourth layer is 100 percent of TiNiVTaW matrix alloy;

4) heating the first layer of material powder obtained in the step 3) in a vacuum environment, boiling by using alcohol and evaporating in vacuum to realize uniform mixing and vacuum dryingDrying under the condition of vacuum degree of (3.2-3.5) × 10^-2Pa, heating temperature of 55-65 deg.C, boiling time of 15-18 min; heating the second layer of material powder in vacuum environment, boiling with alcohol and vacuum evaporating to realize uniform mixing and vacuum drying under the condition of vacuum degree of 3.5-4.2 x 10^-2Pa, heating at 55-70 deg.C for 18-25 min; mechanically mixing the third layer of material powder by using a vibration mixer under the conditions that the vibration frequency is 45-50Hz, the vibration force is 4500-5500N, and the oscillation time is 40-45 min; the fourth layer of the material powder is mechanically mixed by a vibration mixer, the required conditions are that the vibration frequency is 110-130Hz, the vibration force is 11000-12500N, and the oscillation time is 55-65 min;

5) sequentially carrying out hot-pressing solidification on each layer of powder obtained in the step 4) according to the sequence of one to four layers, pouring each layer of mixed powder into a separate mould according to the corresponding layer thickness for compaction, and the required operation conditions are as follows: the first layer, the pressing pressure is applied to be 20-25MPa, the pressing temperature is 250-300 ℃, the heat preservation and pressure maintaining time is 200-250min each time, the air is released for 4-5s every 30-45s, and the operation is repeatedly carried out for 6-8 times; the second layer, the pressing pressure is 25-28MPa, the pressing temperature is 250-280 ℃, the heat preservation and pressure maintaining time is 110-130min each time, the air is discharged for 1-3s every 25-35s, and the operation is repeatedly carried out for 4-6 times; the third layer, the pressing pressure is 23-25MPa, the pressing temperature is 240 ℃, the heat preservation and pressure maintaining time is 120-140min each time, the air is discharged for 1-2s every 20-30s, and the operation is repeatedly carried out for 4-6 times; the fourth layer, the pressing pressure is 28-32MPa, the pressing temperature is 800-950 ℃, the heat preservation and pressure maintaining time is 100-120min each time, the air is discharged for 2s every 50s, and the operation is repeatedly carried out for 3-5 times;

6) transferring the pressed sheet prepared in the step 5) into a graphite die with the diameter of 30-40mm, and preparing the multilayer composite material by using a spark plasma sintering technology, wherein the spark plasma sintering process requires: the sintering temperature is 1000-1250 ℃, the sintering pressure is 20-25MPa, the heat preservation time is 10-15min, the protective gas is argon, and the heating rate is 200 ℃/min;

7) machining the multilayer composite pressed block prepared in the step 6), and then carrying out disc grinding by using grinding equipment according to the technical requirements, wherein the requirement of the grinding process is that the rotating speed of the equipment is 45-50 r/min; cleaning burrs and fins on the periphery of the guide rail by a polishing machine, carrying out electrostatic spraying at the rotating speed of 440-550r/min and the temperature of 35-400 ℃, and carrying out post-treatment to finally obtain the TiNiVTaW-based self-lubricating guide rail material with the multilayer structure.

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

1. the TiNiVTaW-based self-lubricating guide rail material with the multilayer structure, which takes TiNiVTaW as a substrate, SnAgPt as an anti-wear agent and a multi-component composite material as a reinforcing agent, is designed by a gradient structure, the substrate material TiNiVTaW, the anti-wear agent SnAgPt and the reinforcing agent multi-component composite material are designed layer by layer, and the tribological property of the guide rail with the multilayer structure is obviously improved.

2. The SnAgPt alloy used by the multilayer structure TiNiVTaW-based self-lubricating guide rail material has outstanding anti-occlusion performance, strong high-temperature resistance, high pressure resistance, easy bonding with a steel backing material, and better corrosion resistance, curing property, embeddability and compatibility.

3. The TiNiVTaW-based self-lubricating guide rail material with the multilayer structure prepared by the invention contains TiNiVTaW-based materials in all layers, improves the compatibility among all layers, enables the structure to be more compact and solves the problems of high-temperature stripping and easy separation among all layers of the common multilayer material.

4. Compared with the common guide rail material, the TiNiVTaW-based self-lubricating guide rail material with the multilayer structure prepared by the invention can meet the performance requirements of all parts of the guide rail material, can save the relative consumption of the material, has high bearing capacity, large pressure resistance and strong high temperature resistance, and has important significance for solving the application problem of modern guide rail engineering.

Drawings

FIG. 1 is a flow diagram of a manufacturing process of the present invention;

FIG. 2 is an electron micrograph of a multilayer plate-like crystalline MoWCrO powder prepared in example 1;

FIG. 3 is a graph of the friction coefficient of TiNiVTaW-based self-lubricating guide rail material with multi-layer structure prepared in examples 1, 2 and 3;

FIG. 4 is a bar graph of wear rates of TiNiVTaW-based self-lubricating rail materials of multi-layer structures prepared in examples 1, 2 and 3;

FIG. 5 is an electron microscope topography of the multi-layer TiNiVTaW-based self-lubricating guide rail material prepared in example 2 in a state of bonding the substrate with the transitional layer of the friction film;

FIG. 6 is an electronic probe diagram of the tribological wear surface of the TiNiVTaW-based self-lubricating rail material of multilayer structure prepared in example 2;

FIG. 7 is a SEM image of the tribological wear surface of the TiNiVTaW-based self-lubricating guide rail material with multi-layer structure prepared in example 3;

FIG. 8 is a 3D micro-topography of the frictional wear of the TiNiVTaW-based self-lubricating rail material with a multi-layer structure prepared in example 3.

Detailed Description

In order to better develop and verify the present invention, the following examples are provided to illustrate the main research contents of the present invention, but the present invention is not limited to the following examples.

The friction test conditions in the following examples were: the load is 5-15N, the speed is 0.10-0.20m/s, the time is 70min and the friction radius is 4.0-4.5 mm.