CN107584287A - A kind of preparation method of micro- texture self-lubricating ceramic guide rail - Google Patents
A kind of preparation method of micro- texture self-lubricating ceramic guide rail Download PDFInfo
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- CN107584287A CN107584287A CN201710091779.6A CN201710091779A CN107584287A CN 107584287 A CN107584287 A CN 107584287A CN 201710091779 A CN201710091779 A CN 201710091779A CN 107584287 A CN107584287 A CN 107584287A
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- guide rail
- micropore
- movable guiding
- kollag
- rail
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Abstract
The invention belongs to machine tool field, more particularly to a kind of preparation method of micro- texture self-lubricating ceramic guide rail.The ceramic guide rail is prepared by aluminum oxide, diopside and iron oxide for raw material.The invention is characterized in that：Mass percent according to aluminum oxide 89%~99%, diopside 1%~5%, iron oxide 0%~6% carries out dispensing and carries out pressureless sintering, the product blank come out of the stove carries out thick, fine grinding on numerical control fragile material machining center using skive, is prepared into movable guiding rail and fixed guide rail.Using femtosecond laser process technology in fixed guide rail and the micropore of movable guiding rail Surface Machining storage kollag, using spark erosion technique on fixed guide rail and movable guiding rail thread mill drilling, and be connected through a screw thread mode and be fixed on machine body.Kollag is added in micropore.Movable guiding rail kollag when being moved back and forth on fixed guide rail drags be overlying on friction pair between, form continuous solid lubrication layer, reach and reduce friction, reduce abrasion and improve the purpose in guide rail life-span.
Description
Technical field
The invention belongs to machine tool field, more particularly to a kind of preparation method of micro- texture self-lubricating ceramic guide rail.
Background technology
The effect of machine tool guideway is the executive item such as supporting and guiding workbench, knife rest, and ensures their kinematic accuracy.Cause
This, guide rail is applied to the process equipments such as Metal Cutting Machine Tool, grinding machine and Digit Control Machine Tool extremely widely.Existing guide rail is typically to cast
Several metal guide rail pairings such as iron-cast iron, cast iron-hardened steel, hardened steel-hardened steel are secondary.The hardness of metal guide rail material compared with
Low, when guide rail undertakes larger load, iron filings, the sand grains of machining blanks easily cause way rub and pulled, and serious even makes
Guide rail produces pit, pit etc., so as to reduce machine tool accuracy, influences product quality.Plastic guide rail good manufacturability, cost are low, anti-
Low speed jerking motion performance is good, but poor thermal conductivity, linear expansion coefficient are big, and there are problems that and the bonding of matrix and plastic ageing.
With the development of high-efficient automatic Digit Control Machine Tool, high-precision precision machine tool and heavy machine tool, the type and species of machine tool guideway exist
Change is constantly occurring, hydrostatic slideway and magnetic suspension machine tool guideway, such guide rail cost and maintenance cost then occurs
It is higher, it is currently only used for large-scale high-precision numerical control lathe.
Compared with metal guide rail and plastic guide rail, ceramics are with hardness is high, chemical stability is good, wear-resistant, line expansion
The series of advantages such as coefficient and coefficient of friction are small.In nature, ceramic hardness is only second to diamond, has excellent wear-resisting
Damage performance so that ceramics, which promise to be, to be lasted a long time and machine tool guideway material that properties are excellent.In ceramic matrix
Different toughened and reinforced phases is added, the excellent composite ceramics guide material of room-temperature mechanical property can be prepared.
The content of the invention
For above-mentioned guide rail the deficiencies in the prior art, the present invention provides a kind of micro- texture self-lubricating ceramic guide rail and its preparation
Method, so as to reach, guide rail is not easy to wear, improves the purpose of lathe running precision.The guide rail anti-creep, ageing-resistant, acid and alkali-resistance, heat
The coefficient of expansion is low, anti-wear performance is good, the good choosing for promise to be and improve machine finish, extending guideway service life
Select, there is unique advantage in ultra precise measurement and manufacture field, requirement of the ultra precise workbench to guide material can be met.
The present invention adopts the following technical scheme that：
A kind of micro- texture self-lubricating ceramic guide rail, it is characterized in that it is prepared by aluminum oxide, diopside and iron oxide for raw material,
The mass percent (wt.%) of each raw material is：Aluminum oxide 89% ~ 99%, diopside 1% ~ 5%, iron oxide 0% ~ 6%.Pressureless sintering is come out of the stove
Product blank roughly ground on numerical control fragile material machining center using skive, fine grinding, be prepared into activity
Guide rail (2) and fixed guide rail (5).And the micropore (4) of kollag (1) is stored in its Surface Machining, using electrical discharge machining
Technology thread mill drilling on fixed guide rail (5) and movable guiding rail (2), and be connected through a screw thread mode and be fixed on machine body
On.Kollag (1) is added in micropore.Movable guiding rail (2) kollag when being moved back and forth on fixed guide rail (5)
(1) drag and be overlying between friction pair, form continuous solid lubrication layer (3), reach reduction friction, reduce abrasion and improve the guide rail longevity
The purpose of life.
The processing step for preparing above-mentioned micro- texture self-lubricating ceramic guide rail is：
(1) using aluminium oxide ceramics as matrix material, using diopside as sintering aid and toughened and reinforced addition phase, with iron oxide
For toner；Mass percent according to aluminum oxide 89% ~ 99%, diopside 1% ~ 5%, iron oxide 0% ~ 6% weighs raw material；
(2) raw material weighed up is mixed, adds polyvinyl alcohol (PVA) binding agent and polypropylene acid ammonium dispersant with deionization
Water is medium Intensive ball mill 100 ~ 120 hours, and wherein solid concentration is 50 ~ 65% (mass percents, similarly hereinafter), binder content
For 0.5 ~ 1%, dispersant is 0.5 ~ 0.8%.Processing system is carried out to the raw material after ball milling using press spray prilling
Obtain the uniform mixed powder of spherical shape；Atomisation pressure is 0.08 ~ 0.1MPa, 350 ~ 400 DEG C of drier entrance hot blast temperature, is exported
Temperature is 95 ~ 110 DEG C, and charging rate is 10 ~ 14ml/min, and injection diameter is 0.7 ~ 1.5mm；
(3) mixed powder after granulation is subjected to vacuum injection shaping, in 20 ~ 30 DEG C of temperature after the blank demoulding of vacuum injection
Degree is lower to carry out drying at room temperature, and dried blank carries out isostatic cool pressing compacting under 180 ~ 200 MPa oil pressure, and the dwell time is
8~12 min；
(4) non-pressure sintering technology of gradient increased temperature mode is used, using pure zirconia aluminium powder as filling out powder by the ceramics after isostatic cool pressing
Blank is put into fuel gas energy-saving batch sintering furnace and buries burning, 1450 ~ 1580 DEG C of sintering temperature in atmosphere, and the heating-up time is 50 ~ 70
Hour, soaking time is 10 ~ 15 hours, furnace cooling after insulation；
(5) the product blank that sintering is come out of the stove is roughly ground using skive on numerical control fragile material machining center, refined
Processing, you can prepare high tenacity, high intensity, the large scale aluminium oxide ceramics guide rail product of low cost.
(6) micropore (4), micropore are processed on fixed guide rail (5) and movable guiding rail (2) using femtosecond laser process technology
(4) a diameter of 50 ~ 100 μm, depth be 30 ~ 50 μm, spacing be 50 ~ 80 μm.
(7) a diameter of 0.5 ~ 1 μm kollag (1) powder, solid lubrication are filled in ceramic guide rail micropore (4)
Agent (1) is lead powder and molybdenum disulfide (MoS2) lubricant grease.
(8) spark erosion technique thread mill drilling on fixed guide rail (5) and movable guiding rail (2) is used, and passes through spiral shell
Line connected mode is fixed on machine body.
The guide rail being applicable according to different occasions, by changing micropore (4) diameter, depth, pitch of holes and kollag (1)
Species, the self-lubricating guide-way with different greasy properties can be obtained.
The ceramic guide rail prepared by the above method, movable guiding rail (2) solid when being moved back and forth on fixed guide rail (5) moisten
Lubrication prescription (1), which drags, to be overlying between friction pair, forms continuous solid lubrication layer (3), is reduced and is rubbed and extend making for machine tool guideway
Use the life-span.The guide rail has the premium properties such as small anti-creep, ageing-resistant, acid and alkali-resistance, coefficient of friction, high rigidity, wear-resistant, Neng Goubao
Ultra precise workbench is demonstrate,proved to the requirement that guide rail overall performance requires high, dimension precision requirement is high, available for efficiently automatic
Change Digit Control Machine Tool, high-precision precision machine tool and heavy machine tool.
Brief description of the drawings
Fig. 1 is the self-lubrication ceramic guide rail structure schematic diagram of the present invention, wherein：1 is the solid lubrication inside micropore
Agent, 2 be movable guiding rail, and 3 cover the solid lubrication layer to be formed to drag, and 4 be micropore, and 5 be fixed guide rail.
Embodiment
Two most preferred embodiments of the present invention are given below：
Embodiment one：Mass percent according to aluminum oxide 97%, diopside 3% weighs raw material；The raw material weighed up is mixed, added
0.8% (mass percent, similarly hereinafter) PVA and 0.5% polypropylene acid ammonium, are mixed with deionized water with 3: 2 mass ratio, are loaded poly-
Intensive ball mill carries out mist projection granulating processing in ball milling bucket made of urethane after 100 hours；Atomisation pressure is 0.1MPa, and drier enters
The control of mouth hot blast temperature is at 350 ~ 400 DEG C, and outlet temperature is 95 ~ 110 DEG C, and charging rate control is straight in 10 ~ 14ml/min, spray orifice
Footpath is 1mm；Mixed powder after granulation is subjected to vacuum injection shaping, in 20 ~ 30 DEG C of temperature after the blank demoulding of vacuum injection
Degree is lower to carry out drying at room temperature, and dried blank carries out isostatic cool pressing compacting, dwell time 10 under 180 MPa oil pressure
min；The ceramic blank after isostatic cool pressing is put into fuel gas energy-saving batch sintering furnace in air using pure zirconia aluminium powder as powder is filled out
In bury burning, 1500 DEG C of sintering temperature, the heating-up time is 70 hours, and soaking time is 15 hours, furnace cooling after insulation；Burnt without pressure
The product blank for bearing stove is roughly ground on numerical control fragile material machining center using skive, fine grinding, is prepared
Into movable guiding rail (2) and fixed guide rail (5).Processed with femtosecond laser process technology on fixed guide rail (5) and movable guiding rail (2)
Micropore (4), micropore (4) is a diameter of 80 μm, depth is 30 μm, spacing is 50 μm.Using spark erosion technique in ceramic guide rail
Upper thread mill drilling, is fixed on machine body using thread connecting mode.Filling is a diameter of in ceramic guide rail micropore (4)
0.5 μm of lead powder end, you can reach self-lubricating effect.The ceramic guide rail bending strength is 318 ~ 352MPa, Vickers hardness is 13 ~
14GPa, fracture toughness are 4.8 ~ 5.6, and coefficient of friction is 0.086 when load 200N, speed are 300 mm/min.
Embodiment two：Other with embodiment one, be a difference in that according to aluminum oxide 93%, diopside 4%, iron oxide 3% matter
Amount percentage weighs raw material；Binder content is 1% during mist projection granulating, dispersant 0.8%；Isostatic cool pressing oil pressure is 200
MPa, sintering temperature are 1580 DEG C.Micropore is processed on fixed guide rail (5) and movable guiding rail (2) using femtosecond laser process technology
(4), micropore (4) is a diameter of 100 μm, depth is 50 μm, spacing is 80 μm, a diameter of 1 μm of the filling in guide rail micropore (4)
MoS2Lubricant grease.The ceramic guide rail bending strength is 321 ~ 349MPa, and Vickers hardness is 12 ~ 14GPa, fracture toughness is 4.1 ~
4.6, coefficient of friction is 0.105 when load 200N, speed are 300 mm/min.
Claims (2)
- A kind of 1. micro- texture self-lubricating ceramic guide rail, it is characterized in that processing the micropore of storage kollag (1) in ceramic surface (4) kollag (1), and in micropore (4) is added.
- 2. a kind of micro- texture self-lubricating ceramic guide rail, its feature comprise the following steps according to claim 1：(1) the product blank that pressureless sintering is come out of the stove roughly ground on numerical control fragile material machining center using skive, Fine grinding, it is prepared into movable guiding rail (2) and fixed guide rail (5)；(2) micropore (4), micropore (4) are processed on fixed guide rail (5) and movable guiding rail (2) using femtosecond laser process technology A diameter of 50 ~ 100 μm, depth be 30 ~ 50 μm, spacing be 50 ~ 80 μm；(3) spark erosion technique thread mill drilling on fixed guide rail (5) and movable guiding rail (2) is used, and passes through screw thread Connected mode is fixed on machine body；(4) a diameter of 0.5 ~ 1 μm of solid lubricant powder is filled in ceramic guide rail micropore (4), kollag (1) is Lead powder and molybdenum disulfide (MoS2) lubricant grease.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710091779.6A CN107584287A (en) | 2017-02-21 | 2017-02-21 | A kind of preparation method of micro- texture self-lubricating ceramic guide rail |
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| CN201710091779.6A CN107584287A (en) | 2017-02-21 | 2017-02-21 | A kind of preparation method of micro- texture self-lubricating ceramic guide rail |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108975886A (en) * | 2018-09-25 | 2018-12-11 | 鲁东大学 | A kind of micro- texture self-lubricating wire drawing die based on 3D printing technique |
| CN109514277A (en) * | 2018-12-13 | 2019-03-26 | 山东大学 | A kind of compound texture guide rail of micro-nano and preparation method thereof |
| CN109531409A (en) * | 2018-12-13 | 2019-03-29 | 山东大学 | Compound micro- texture guide rail of one kind and preparation method thereof |
| CN113024229A (en) * | 2021-03-02 | 2021-06-25 | 山东硅元新型材料股份有限公司 | Preparation method of alumina ceramic guide rail |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102442819A (en) * | 2010-10-12 | 2012-05-09 | 鲁东大学 | Method for preparing high-performance large aluminum oxide product at low cost |
| CN102628544A (en) * | 2012-04-16 | 2012-08-08 | 江苏大学 | Micro-embedded self-lubricating texture on surfaces of gear and cam and preparation method thereof |
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2017
- 2017-02-21 CN CN201710091779.6A patent/CN107584287A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102442819A (en) * | 2010-10-12 | 2012-05-09 | 鲁东大学 | Method for preparing high-performance large aluminum oxide product at low cost |
| CN102628544A (en) * | 2012-04-16 | 2012-08-08 | 江苏大学 | Micro-embedded self-lubricating texture on surfaces of gear and cam and preparation method thereof |
Non-Patent Citations (1)
| Title |
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| 孙方红等: "《工程训练》", 31 August 2016 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108975886A (en) * | 2018-09-25 | 2018-12-11 | 鲁东大学 | A kind of micro- texture self-lubricating wire drawing die based on 3D printing technique |
| CN109514277A (en) * | 2018-12-13 | 2019-03-26 | 山东大学 | A kind of compound texture guide rail of micro-nano and preparation method thereof |
| CN109531409A (en) * | 2018-12-13 | 2019-03-29 | 山东大学 | Compound micro- texture guide rail of one kind and preparation method thereof |
| CN109531409B (en) * | 2018-12-13 | 2019-12-03 | 山东大学 | Compound micro- texture guide rail of one kind and preparation method thereof |
| CN113024229A (en) * | 2021-03-02 | 2021-06-25 | 山东硅元新型材料股份有限公司 | Preparation method of alumina ceramic guide rail |
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