CN107641756B - A kind of anti-corrosion linear bearing lasso and preparation method thereof - Google Patents
A kind of anti-corrosion linear bearing lasso and preparation method thereof Download PDFInfo
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Abstract
The present invention relates to a kind of anti-corrosion linear bearing lassos and preparation method thereof, belong to machinery manufacturing technology field.Linear bearing lasso in the present invention includes metallic matrix and hydrophobic coating, the metallic matrix is made of steel alloy, the steel alloy includes the component of following mass percentage content: 0.95~1.05%C, 1.5~2.0%Cu, 0.4~0.55Mn, 0.15~0.35Si, 1.40~1.5%Cr, 0.8~1.5%Be, 0.1~0.3%Ni, 3~6% modified Nanos ceramics, surplus is Fe, and be made up of specific preparation method, linear bearing lasso corrosion resisting property of the invention is good, and intensity is high, shock resistance is good.
Description
Technical field
The invention belongs to machinery manufacturing technology field, it is related to a kind of anti-corrosion linear bearing lasso and preparation method thereof.
Background technique
Linear bearing is a kind of linear motion system, is used cooperatively with cylindrical shaft and is used for rectilinear path.Due to bearing ball with
Bearing outside point contact, steel ball are rolled with the smallest frictional resistance, therefore linear bearing has friction small and more stable, no
Change with bearing speed, high sensitivity, steady linear motion with high accuracy can be obtained.
Generic linear bearing ring mostly uses Gr15 bearing steel shape tube to be made of raw material at present, and Gr15 bearing steel is special-shaped
Pipe first processes interior outer groove to lasso internal-and external diameter raceway step with lathe after cutting off, and is then quenched heat treatment and reaches defined hard
Degree, then carry out coarse-fine centerless external cylindrical mill and carry out outer diameter grinding, it is ground by dedicated inner circle and carries out the coarse-fine grinding of inner hole, entire lasso is just calculated
It completes the process.And also lasso is classified with special classifier before assembly, stopped again after assembly drift, flexibility etc. into
Row one-hundred-percent inspection, end product will also cooperate rationally in the box aluminium seat of loading.Therefore cooperation is carried out to bearing and reaches fit tolerance
Rationally.The above process material is more, complex procedures, difficult to control, tolerance fit required precision height is cooperated after assembly, while will
Sorting is singly matched, and difficulty of processing is big, and machining allowance is big, causes artificial and material waste.In addition, plum blossom trough in bearing ring
It is point contact that convex surface is contacted with steel ball, and contacting in use with axis is also point contact, although flexible operation, bearing capacity is lower,
It can be suitably employed on the lower working face of load in actual use.It will appear showing for retardance or linear axis when load is heavier
As be easy to causeing damage, reducing service life, can also damage other components and complete machine.
Generic linear bearing cannot be used in special and adverse circumstances, especially use in acid, alkalinity and high humidity environment
When, bearing ring is inside and outside in a short time and steel ball generates corrosion and corrosion phenomenon.
Summary of the invention
It is good the purpose of the present invention is in view of the above-mentioned problems existing in the prior art, proposing a kind of corrosion resisting property, intensity height,
The good linear bearing lasso of shock resistance.
Object of the invention can be realized by the following technical scheme:
A kind of anti-corrosion linear bearing lasso, the linear bearing lasso include metallic matrix and hydrophobic coating, the metal
Matrix is made of steel alloy, and the steel alloy includes the component of following mass percentage content: 0.95~1.05%C, 1.5~
2.0%Cu, 0.4~0.55Mn, 0.15~0.35Si, 1.40~1.5%Cr, 0.8~1.5%Be, 0.1~0.3%Ni, 3~
6% modified Nano ceramics, surplus Fe.
The present invention is provided with one layer of hydrophobic coating outside the metallic matrix of linear bearing lasso, not only acts as preferable anti-
Corrosiveness also realizes its surface hydrophilic to hydrophobic transformation, obtains self-cleaning function.
The present invention improves containing for Cu in linear bearing lasso metal matrix material steel alloy on the basis of existing technology
Amount, Cu have certain solubility in iron-based, have solution strengthening effect, and the toughness and intensity of product can be improved in copper powder, but
It is that excessive Cu can make the freezing range of alloy broaden, is easy to produce casting flaw.It also added suitable in the present invention and add
Suitable Be element is added, the hardness of Be element is higher, and the hardness and thermostabilization of steel alloy are helped to improve with Cu synergistic effect
Property, Be element can form fine and close protective film in air, have apparent corrosion resistance.Suitable Ni and Fe, which is formed, to be had more
The heat-resisting phase for dissipating invigoration effect, can prevent the dislocation climb under high temperature, improve the tensile strength heat resistance of product, but excessive
Ni can reduce the corrosion resistance of steel alloy.The present invention is added to suitable nano ceramics in steel alloy, nano ceramics have compared with
High intensity and hardness and corrosion resistance can effectively improve intensity, hardness, frictional behaviour and the corrosion resistance of steel alloy.In right amount
Ceramic powders the central point of heterogeneous nucleation is alternatively arranged as in the casting process of steel alloy, improve metal bath crystalline rate,
Crystal grain is refined, the microstructure of steel alloy is improved.The too high levels of nano ceramics can reduce the mobility of metal bath, be not easy
Casting, and weaken the connection of metallic particles in matrix, the formability and densification of steel alloy are influenced, the mechanics of steel alloy is reduced
Intensity and fatigue behaviour.The nanostructure of nano ceramics helps to reduce the cast temperature of steel alloy, is easier to carry out casting.
Preferably, the modified Nano ceramics include the following components'mass percentage: 17~26% nanometers of CaF2, 28
~35% nano SiC, surplus are nanometer ZrO2。
The nanometer CaF of above-mentioned mass percent2, nano SiC and nanometer ZrO2Complex role can effectively improve the power of steel alloy
Performance is learned, and reduces the cast temperature of steel alloy.Wherein, nano SiC and nanometer ZrO2The intensity that steel alloy can be effectively improved, receives
Rice CaF2The plasticity and toughness of steel alloy, nanometer CaF are effectively improved with nano SiC synergistic effect2With nanometer ZrO2Synergistic effect can
Reduce the cast temperature temperature of steel alloy.Wherein, nanometer CaF2The mobility for helping to improve metal bath improves the thin of crystal grain
Change degree.Nanometer CaF in nano ceramics2Content it is too low, nano SiC and nanometer ZrO2Too high levels can improve the crisp of steel alloy
Property, CaF2Too high levels, nano SiC and nanometer ZrO2Content is too low, is unfavorable for the raising of alloy hardness of steel.
Preferably, the modified Nano ceramics are rare earth modified nano ceramics, in the rare earth modified nano ceramics
Rare earth element is Gd and Tb.
Nano ceramics is not easy to disperse in metal bath since partial size is smaller, causes to reunite and pile up, Gd and Tb element energy
It is preferably adsorbed on above-mentioned nano ceramics surface, reduces reunion of the above-mentioned nano ceramics in metal bath, improves nano ceramics
Dispersibility in metallic matrix, to improve the overall performance of steel alloy.
Another object of the present invention is to provide a kind of preparation method of anti-corrosion linear bearing lasso, the preparation method packets
Include following steps,
S1, prepare raw material in proportion, nano ceramics is immersed in rare earth treating agent, ultrasonic wave stirring dipping, then
Filtering, dry, crushing, are made modified Nano ceramics.
S2, raw material are smelted into melt, melt is poured into molding die after refining slagging-off, is press-formed and life is made
Base, molding die inside are equipped with heater and cooler device；
S3, ripe base is obtained after carrying out pressurization heat treatment to green compact in molding die；
S4, after ripe base is carried out cleaning treatment and drying, it is placed in progress ultrasonic wave impregnation in decorating liquid, is then taken out
It is dry, one layer of hydrophobic coating is coated on ripe base surface after the drying, up to linear bearing lasso after drying.
The present invention changes the method that tradition prepares linear bearing lasso using cutting, is carried out by the way of casting, simplifies
Preparation step improves the accuracy of lasso size, and coats one layer of hydrophobic painting on its surface after the ripe base preparation of lasso
Layer, effectively increases the etch resistant properties of lasso.The present invention is applied with certain pressure to green compact and ripe base during the preparation process,
The consistency for effectively increasing steel alloy improves the internal microstructure of steel alloy, improves the overall performance of lasso.
Preferably, being included the following components'mass percentage in rare earth treating agent in the step S1: 2.0~2.5%
Gd, 1.5~2.0%Tb, 0.8~1.3%H2O2With 1.3~2.0%NaClO, surplus is water.
The content of rare earth is too low in rare earth treating agent, is not enough to improve dispersibility of the nano ceramics in metal bath, contains
Measure it is excessively high, then be easy nano ceramics surface formed rare-earth salts crystallization, the interface of itself and polymeric matrix can be reduced instead
Binding force, so within the above range by the concentration control of rare earth element, making it have optimal treatment effect.H2O2And NaClO
Generation rare earth oxide can be reacted with rare earth element and is adsorbed on nano ceramics table in nano ceramics Surface Creation reactive species
Face, to increase the binding force between nano ceramics and rare earth element.
Preferably, the ultrasonic power of ultrasonic wave stirring dipping is 400~550w in the step S1, mixing speed is
350~500rmp, temperature are 60~80 DEG C.
The excessively high rare earth element that is unfavorable for of temperature will cause H in the reaction and attachment on nano ceramics surface2O2Decomposition,
Reduce reaction efficiency.
Preferably, the mistake being press-formed in the step S2 is known as, melt is poured into molding die, pouring temperature
It is 1260~1320 DEG C, keeps the temperature 2~3h when temperature is down to 890~950 DEG C in molding die after casting, then slow cooling is extremely
250~320 DEG C of 2~3h of heat preservation.
The present invention is arranged heater and cooler device in molding die, moulding by casting and heat treatment in molding die into
Row, reduces process, reduces labor intensity, while the pressure that molding die can be certain to green compact, helps to improve set loop knot
The densification of the precision and microstructure of structure.The present invention is conducive to after the casting of solution in 890~950 DEG C of 2~3h of heat preservation
The abundant of crystal generates and the release of stress, so as to improve steel alloy internal microstructure, then slow cooling to 250~
320 DEG C of heat preservations are conducive to be substantially reduced steel alloy internal stress, to reduce deformation.
Preferably, the heater and cooler device can be the pipeline that is heated or cooled being arranged in molding die, pipe
It is connected in road and medium is heated or cooled, the heating device can also be resistance wire.
Preferably, the process for heat treatment of pressurizeing in the step S3 is to control the heater and cooler device of molding die,
Temperature is heated to 550~600 DEG C, keeps the temperature 2.5~3h, is then cooled to 400~450 DEG C, keeps the temperature 3~4h, then slow cooling
To room temperature.
Preferably, being carried out at pressurization at 250~500MPa during being press-formed in the step S2 to green compact
It manages, pressurized treatments is carried out at 300~500MPa to green compact in heat treatment process of pressurizeing in the step S3.
The present invention applies certain pressure during molding and heat treatment to green compact, effectively increases the cause of steel alloy
Density improves the microstructure of steel alloy, so as to improve the overall performance of steel alloy.Pressure is excessive, and extruding is be easy to cause to become
Shape is unfavorable for the raising of steel alloy overall performance instead.
Preferably, being included the following components'mass percentage in decorating liquid described in the step S4: 18~23% silicon
Alkane coupling agent, 6~12% Nano-meter SiO_2s2, 3~5% imidazoline oleates, surplus is ethyl alcohol.
The impregnation that the present invention first passes through decorating liquid before coating hydrophobic coating forms one layer of intermediate mistake on ripe base surface
Layer is crossed, effectively increases hydrophobic coating in the adhesive force of metal surface.Wherein, some group energy and steel alloy of silane coupling agent
Surface, which reacts, to be closely linked, and other groups of silane coupling agent can react with organic hydrophobic coating,
To combine closely hydrophobic coating in alloy steel surface.Imidazoline oleate itself can be in alloy steel surface shape in decorating liquid
At one layer of stable protective film, silane coupling agent can be effectively improved in the stabilization of alloy steel surface with silane coupling agent synergistic effect
Property, reduce the rippability of hydrophobic coating.And Nano-meter SiO_22The combination of silane coupling agent and hydrophobic coating can be effectively improved, and
A kind of invigoration effect can be played in hydrophobic coating, made entire coating dense uniform, the hole of coating is effectively compensated for, to corrosion
Property ion such as hydrogen ion, chloride ion have apparent retardation, to improve the etch resistant properties of hydrophobic coating.
Preferably, hydrophobic coating described in the step S4 is the mixture of paste PVC and PPS.
PVC has excellent water-fast, oil resistant and a resistance to chemical corrosion, and PPS has good mechanical strength, steady
The two is organically combined and plays respective advantage, effectively mentioned by the performances such as fixed rigidity, high-temperature stability, chemical resistance, the present invention
The corrosion resisting property of high lasso.
Compared with prior art, the invention has the following advantages: the present invention linear bearing lasso metallic matrix
One layer of organic hydrophobic coating is arranged in surface, assigns the preferable corrosion resistance of linear bearing lasso and self-cleaning function, so that set
Circle can be applied to more rugged environment, extend lasso and linear bearing service life；And reasonable compatibility metallic matrix
With the constituent of hydrophobic coating, so that organic hydrophobic coating is tightly combined with metallic matrix, stripper-resistance is strong, and has relatively strong
Corrosion resistance；The preparation method for optimizing lasso reduces casting technique by the preparation method of casting, improves set
The preparation precision of circle.
Specific embodiment
The following is specific embodiments of the present invention, and technical scheme of the present invention will be further described, but the present invention is simultaneously
It is not limited to these embodiments.
The linear bearing lasso and preparation method thereof in the present invention is further explained below by specific embodiment.
Examples 1 to 4
Anti-corrosion linear bearing lasso in Examples 1 to 4 includes metallic matrix and hydrophobic coating, and metallic matrix is by steel alloy
It being made, steel alloy includes the component of following mass percentage content: 0.95~1.05%C, 1.50~2.00%Cu, 0.40~
0.55Mn, 0.15~0.35Si, 1.40~1.50%Cr, 0.80~1.50%Be, 0.10~0.30%Ni, 3.00~6.00%
Modified Nano ceramics, surplus Fe.
Modified Nano ceramics include the following components'mass percentage: 17~26% nanometers of CaF2, 28~35% nanometers
SiC, surplus are nanometer ZrO2。
Modified Nano ceramics are rare earth modified nano ceramics, the rare earth element in rare earth modified nano ceramics be Gd and
Tb。
The constituent of metallic matrix is as shown in the table in Examples 1 to 4,
Table 1: the constituent of metallic matrix in Examples 1 to 4
The component and mass percent of nano ceramics are as shown in the table in Examples 1 to 4,
Table 2: the component and mass percent of nano ceramics in Examples 1 to 4
Embodiment 5
The preparation method of anti-corrosion linear bearing lasso includes the following steps in the present embodiment,
(1), prepare raw material by the component and mass percent of the steel alloy in embodiment 3, nano ceramics is immersed in
In rare earth treating agent, then ultrasonic wave stirring dipping filters, is dry, crushing, modified Nano ceramics are made；In rare earth treating agent
It includes the following components'mass percentage: 2.0%Gd, 1.5%Tb, 0.8%H2O2And 1.3%NaClO, surplus are water；
(2), raw material are smelted into melt, melt are poured into molding die after refining slagging-off, pouring temperature is
1260 DEG C, pressurized treatments is carried out after casting at 250MPa, green compact, heat preservation when temperature is down to 890 DEG C in mold to be formed is made
3h, then slow cooling to 250 DEG C of heat preservation 3h, molding die inside are equipped with heater and cooler device, and heating device is that setting exists
Resistance wire in molding die, cooling device are the cooling pipe being arranged in molding die, are connected with cooling media in pipeline；
(3), ripe base is obtained after carrying out pressurization heat treatment to green compact under 300MPa pressure in molding die；At pressurized heat
The process of reason is to control the heater and cooler device of molding die, and temperature is first heated to 550 DEG C, keeps the temperature 3h, is then cooled to
400 DEG C, 4h is kept the temperature, then be slow cooling to room temperature；
(4), after ripe base being carried out cleaning treatment and drying, it is placed in progress ultrasonic wave impregnation in decorating liquid, is then taken
Drying out, coats one layer of hydrophobic coating on ripe base surface after the drying, it is dry after up to linear bearing lasso, decorating liquid includes
The component of following mass percent: 18% silane coupling agent, 6% Nano-meter SiO_22, 3% imidazoline oleate, surplus is ethyl alcohol, is dredged
Water coating is the mixture of paste PVC and PPS.
Embodiment 6
The preparation method of anti-corrosion linear bearing lasso includes the following steps in the present embodiment,
(1), prepare raw material by the component and mass percent of the steel alloy in embodiment 3, nano ceramics is immersed in
In rare earth treating agent, then ultrasonic wave stirring dipping filters, is dry, crushing, modified Nano ceramics are made；In rare earth treating agent
It includes the following components'mass percentage: 2.2%Gd, 1.6%Tb, 1.0%H2O2And 15%NaClO, surplus are water；
(2), raw material are smelted into melt, melt are poured into molding die after refining slagging-off, pouring temperature is
1280 DEG C, pressurized treatments is carried out after casting at 300MPa, green compact, heat preservation when temperature is down to 910 DEG C in mold to be formed is made
2.5h, then slow cooling to 270 DEG C of heat preservation 2.5h, molding die inside are equipped with heater and cooler device, heating and cooling dress
It sets and can be the pipeline that is heated or cooled being arranged in molding die, be connected in pipeline and medium is heated or cooled, heating device is also
It can be resistance wire；
(3), ripe base is obtained after carrying out pressurization heat treatment to green compact under 350MPa pressure in molding die；At pressurized heat
The process of reason is to control the heater and cooler device of molding die, and temperature is first heated to 560 DEG C, keeps the temperature 2.5h, then cools down
To 430 DEG C, 3.5h is kept the temperature, then be slow cooling to room temperature；
(4), after ripe base being carried out cleaning treatment and drying, it is placed in progress ultrasonic wave impregnation in decorating liquid, is then taken
Drying out, coats one layer of hydrophobic coating on ripe base surface after the drying, it is dry after up to linear bearing lasso, decorating liquid includes
The component of following mass percent: 19% silane coupling agent, 8% Nano-meter SiO_22, 4% imidazoline oleate, surplus is ethyl alcohol, is dredged
Water coating is the mixture of paste PVC and PPS.
Embodiment 7
The preparation method of anti-corrosion linear bearing lasso includes the following steps in the present embodiment,
(1), prepare raw material by the component and mass percent of the steel alloy in embodiment 3, nano ceramics is immersed in
In rare earth treating agent, then ultrasonic wave stirring dipping filters, is dry, crushing, modified Nano ceramics are made；In rare earth treating agent
It includes the following components'mass percentage: 2.3%Gd, 1.8%Tb, 1.2%H2O2And 1.8%NaClO, surplus are water；
(2), raw material are smelted into melt, melt are poured into molding die after refining slagging-off, pouring temperature is
1300 DEG C, pressurized treatments is carried out after casting at 400MPa, green compact, heat preservation when temperature is down to 930 DEG C in mold to be formed is made
2.5h, then slow cooling to 300 DEG C of heat preservation 2.5h, molding die inside are equipped with heater and cooler device, and heating device is to set
The resistance wire in molding die is set, cooling device is the cooling pipe being arranged in molding die, and cooling matchmaker is connected in pipeline
It is situated between；
(3), ripe base is obtained after carrying out pressurization heat treatment to green compact under 450MPa pressure in molding die；At pressurized heat
The process of reason is to control the heater and cooler device of molding die, and temperature is first heated 580 DEG C, keeps the temperature 2.5h, is then cooled to
430 DEG C, 3.5h is kept the temperature, then be slow cooling to room temperature；
(4), after ripe base being carried out cleaning treatment and drying, it is placed in progress ultrasonic wave impregnation in decorating liquid, is then taken
Drying out, coats one layer of hydrophobic coating on ripe base surface after the drying, it is dry after up to linear bearing lasso, decorating liquid includes
The component of following mass percent: 20% silane coupling agent, 10% Nano-meter SiO_22, 4% imidazoline oleate, surplus is ethyl alcohol,
Hydrophobic coating is the mixture of paste PVC and PPS.
Embodiment 8
The preparation method of anti-corrosion linear bearing lasso includes the following steps in the present embodiment,
(1), prepare raw material by the component and mass percent of the steel alloy in embodiment 3, nano ceramics is immersed in
In rare earth treating agent, then ultrasonic wave stirring dipping filters, is dry, crushing, modified Nano ceramics are made；In rare earth treating agent
It includes the following components'mass percentage: 2.5%Gd, 2.0%Tb, 1.3%H2O2And 2.0%NaClO, surplus are water；
(2), raw material are smelted into melt, melt are poured into molding die after refining slagging-off, pouring temperature is
1320 DEG C, pressurized treatments is carried out after casting at 500MPa, green compact, heat preservation when temperature is down to 950 DEG C in mold to be formed is made
2h, then slow cooling to 320 DEG C of heat preservation 2h, molding die inside are equipped with heater and cooler device, and heater and cooler device is
The pipeline that is heated or cooled in molding die is set, is connected in pipeline and medium is heated or cooled；
(3), ripe base is obtained after carrying out pressurization heat treatment to green compact under 300~500MPa pressure in molding die；Add
The process of autoclaving is to control the heater and cooler device of molding die, temperature is first heated to 550-600 DEG C, heat preservation
Then 2.5-3h is cooled to 400-450 DEG C, keep the temperature 3-4h, then be slow cooling to room temperature；
(4), after ripe base being carried out cleaning treatment and drying, it is placed in progress ultrasonic wave impregnation in decorating liquid, is then taken
Drying out, coats one layer of hydrophobic coating on ripe base surface after the drying, it is dry after up to linear bearing lasso, decorating liquid includes
The component of following mass percent: 23% silane coupling agent, 12% Nano-meter SiO_22, 5% imidazoline oleate, surplus is ethyl alcohol,
Hydrophobic coating is the mixture of paste PVC and PPS.
Embodiment 9-11
Prepare raw material by the component and mass percent of the steel alloy in embodiment 1,2 and 4 respectively, according to embodiment 7
In preparation method carry out linear bearing lasso preparation.
Comparative example 1
Linear bearing lasso only has metallic matrix, and without hydrophobic coating, other are same as Example 7.
Comparative example 2
Modified Nano ceramics are not added in the metallic matrix of linear bearing lasso, other are same as Example 7.
Comparative example 3
Generic linear bearing ring.
The performance of linear bearing lasso in the embodiment of the present invention 5~11, comparative example 1~3 is compared, comparison result is such as
Shown in following table.Wherein, corrosion resisting property uses salt spray test, experimental condition: concentration is 50 ± 5g/L sodium chloride solution；PH value is
6.5~7.2；Salt fog the temperature inside the box is 35 ± 2 DEG C；Spray pattern is continuous spraying；Time is 480 hours.
Table 3: the performance of linear bearing lasso in embodiment 5~11, comparative example 1~3
In conclusion the present invention is rationally matched by coating organic hydrophobic coating in linear bearing lasso metal base surface
The composition and mass percent of 5 metallic matrixes and hydrophobic coating, and linear bearing lasso is made by specific preparation method,
Effectively increase the corrosion resisting property and mechanical property of linear bearing lasso.
Specific embodiment described herein is only an example for the spirit of the invention.The neck of technology belonging to the present invention
The technical staff in domain can make various modifications or additions to the described embodiments or replace by a similar method
In generation, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.
Claims (6)
1. a kind of preparation method of anti-corrosion linear bearing lasso, which is characterized in that the linear bearing lasso includes metallic matrix
And hydrophobic coating, the metallic matrix are made of steel alloy, the steel alloy includes the component of following mass percentage content:
0.95~1.05%C, 1.5~2.0%Cu, 0.4~0.55Mn, 0.15~0.35Si, 1.40~1.5%Cr, 0.8~1.5%Be,
0.1~0.3%Ni, 3~6% modified Nanos ceramics, surplus Fe,
The preparation method comprises the following steps,
S1, raw material are prepared according to the component and its mass percent of above-mentioned steel alloy in proportion, nano ceramics are immersed in dilute
In native inorganic agent, then ultrasonic wave stirring dipping filters, is dry, crushing, modified Nano ceramics are made；
S2, raw material being smelted into melt, melt is poured into molding die after refining slagging-off, pouring temperature is 1260~
It 1320 DEG C, carries out being press-formed obtained green compact in molding die after casting, the process of extrusion forming is to be down to 890 to temperature
Keep the temperature 2~3h at~950 DEG C, then slow cooling to 250~320 DEG C of 2~3h of heat preservation, be press-formed process 250~
Pressurization carries out being equipped with heater and cooler device inside molding die under 500MPa pressure；
S3, ripe base is obtained after carrying out pressurization heat treatment to green compact in molding die, the process for heat treatment of pressurizeing is control molding
Temperature is first heated to 550~600 DEG C by the heater and cooler device of mold, is kept the temperature 2.5~3h, is then cooled to 400~450
DEG C, 3-4h is kept the temperature, then be slow cooling to room temperature, the process for heat treatment of pressurizeing is carried out at 300~500MPa；
S4, after ripe base is carried out cleaning treatment and drying, it is placed in progress ultrasonic wave impregnation in decorating liquid, is then taken out dry
It is dry, one layer of hydrophobic coating is coated on ripe base surface after the drying, up to linear bearing lasso after drying.
2. the preparation method of linear bearing lasso according to claim 1, which is characterized in that the modified Nano ceramics packet
Include the component of following mass percent: 17~26% nanometers of CaF2, 28~35% nano SiCs, surplus is nanometer ZrO2。
3. the preparation method of linear bearing lasso according to claim 1 or 2, which is characterized in that the modified Nano pottery
Porcelain is rare earth modified nano ceramics, and the rare earth element in the rare earth modified nano ceramics is Gd and Tb.
4. the preparation method of linear bearing lasso according to claim 1, which is characterized in that in the step S1 at rare earth
It is included the following components'mass percentage in reason agent: 2.0~2.5%Gd, 1.5~2.0%Tb, 0.8~1.3%H2O2With 1.3~
2.0%NaClO, surplus are water.
5. the preparation method of linear bearing lasso according to claim 1, which is characterized in that repaired described in the step S4
It is included the following components'mass percentage in decorations liquid: 18~23% silane coupling agents, 6~12% Nano-meter SiO_2s2, 3~5% imidazolines oil
Hydrochlorate, surplus are ethyl alcohol.
6. the preparation method of linear bearing lasso according to claim 1, which is characterized in that dredged described in the step S4
Water coating is the mixture of paste PVC and PPS.
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Denomination of invention: A corrosion-resistant linear bearing ring and its preparation method Effective date of registration: 20231128 Granted publication date: 20190308 Pledgee: China Construction Bank Co.,Ltd. Ningbo housing and urban construction sub branch Pledgor: Ningbo Hengli Automobile Parts and Bearing Co.,Ltd. Registration number: Y2023980067828 |