A kind of porous oil storage medium preparation method with orientation lubrication channelTechnical field
The present invention relates to a kind of porous oil storage medium preparation methods with orientation lubrication channel.
Background technique
Porous oil storage media units can be applied to the rolling linear guide for having self-lubricating non-maintaining, and existing self-lubricating is moreHole oil storage medium be usually by the fluoropolymer resins such as polyethylene, polypropylene (visible NSK/IKO patent) or metallic fiber manufacture andAt lubricating oil is stored in the hole being interconnected in porous media, when rolling linear guide runs work to the secondary boundary that rubsFace output lubricating oil is lubricated.The directive property of hole is different in porous oil storage medium used at present, so that porous oil storageMedium is multi-direction around when exporting lubricating oil to brim over, and the exudation of only a fraction lubricating oil is coated in rolling linear guide frictionSecondary interface carries out effectively lubricating, causes the waste of lubricating oil to the secondary lubricating oil for brimming over exudation in addition of friction, to a certain extentThe secondary pollution to applying working condition is also resulted in, operating condition environmental protection is unfavorable for.
Summary of the invention
In order to solve deficiency in the prior art, the purpose of the present invention is to provide a kind of with the more of orientation lubrication channelHole oil storage medium preparation method.
To achieve the above object, the invention adopts the following technical scheme:
A kind of porous oil storage medium preparation method with orientation lubrication channel, comprising the following steps:
Fluoroplastics and volatilizer are mixed in a certain ratio by step 1, and mixed proportion needs to carry out appropriate adjustment according to porosity,Mixing is sufficiently stirred in batch mixer；
The mixing of fluoroplastics and volatilizer is crushed to 400 mesh or less using crusher by step 2；
Smashed mixing is carried out room temperature molding by step 3 in mold cavity, according to use occasion demand, is molded size modelIt encloses for 50-300MPa, molding base is made；
Molding base is placed in room temperature by step 4, carries out room temperature natural aging treatment, aging time 24-48h；
Step 5, molding base periphery coat high-temperature seal adhesive, and an azimuth plane for only retaining molding base is not coated by high-temperature seal adhesive,It is molded the pasta out that the azimuth plane that base retains is lubricating oil in final porous oil storage medium；
Molding base is placed in vacuum sintering furnace, vacuum degree < 10 by step 6-3Pa, 360-390 DEG C of sintering temperature；It is molded in baseVolatilizer is in negative pressure state in molding base, can quickly volatilize in high temperature, since all azimuth planes are sealed, Volatile GasBody is only overflowed toward reserved face；
After step 7, sintering, sample is taken out, as there is the porous media of orientation lubrication channel；Orientation profit in porous mediaSlide-through road stores upper lubricating oil, can must have the porous oil storage medium of orientation lubrication channel, which is installedIt is lubricated in the orientation to surface of friction pair or rolling element on rolling linear guide, can be realized.
Further, size most preferably 150MPa is molded in the step 3.
Further, the orientation lubrication channel in the step 7 by vacuum oil storage method in porous media stores profitLubricating oil.
Further, the vacuum oil storage method is specially and porous media is placed in lubricating oil, then by porous mediaAnd lubricating oil is placed in vacuum degree < 10-3> 48h in the vacuum environment of Pa can make to store up full lubrication in the directed porosity of porous mediaOil.
Further, the volatilizer is selected from one of benzoic acid, sorbic acid, naphthalene etc..
Further, the fluoroplastics are in polytetrafluoroethylene (PTFE), tetrafluoroethylene-perfluoro alkoxy vinyl ethers copolymerAt least one.
Further, the preferred inorganic polymer high-temperature seal adhesive of the step 5 high temperature sealant, heat-resisting quantity > 500℃。
The invention adopts the above technical scheme, orients the lubricating oil in porous oil storage medium by orientation lubrication channel defeatedRolling linear guide is arrived out to rub secondary interface, is reduced lubricating oil and is brimmed over leakage, improves lubricating oil utilization rate, it is environmentally friendly to be conducive to operating conditionLubrication.
Detailed description of the invention
The present invention is described in further details below in conjunction with the drawings and specific embodiments:
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is present invention orientation lubrication channel schematic diagram.
Specific embodiment
As shown in attached drawing 1 or 2, the present invention the following steps are included:
Fluoroplastics 1 and volatilizer 2 are mixed in a certain ratio by step 1, and mixed proportion is suitably adjusted according to porosity needsIt is whole, mixing is sufficiently stirred in batch mixer；
The mixing of fluoroplastics 1 and volatilizer 2 is crushed to 400 mesh or less using crusher by step 2；
Smashed mixing is carried out room temperature molding by step 3 in mold cavity, according to use occasion demand, is molded size modelIt encloses for 50-300MPa, molding base is made；
Molding base is placed in room temperature by step 4, carries out room temperature natural aging treatment, aging time 24-48h；
Step 5, molding base periphery coat high-temperature seal adhesive 3, and an azimuth plane for only retaining molding base is not coated by high-temperature seal adhesive3, the azimuth plane that molding base retains is the pasta out of lubricating oil in final porous oil storage medium；
Molding base is placed in vacuum sintering furnace 4, vacuum degree < 10-3Pa, 360-390 DEG C of sintering temperature by step 6；It is molded in baseVolatilizer 2 molding base in be in negative pressure state, can quickly volatilize in high temperature, since all azimuth planes are sealed, waveBody of getting angry only is overflowed toward reserved face；
After step 7, sintering, sample is taken out, as there is the porous media 6 of orientation lubrication channel 5；Determine in porous media 6Upper lubricating oil is stored to lubrication channel 5, can there must be the porous oil storage medium of orientation lubrication channel 5, which is situated betweenMatter is installed on rolling linear guide, and the orientation lubrication to surface of friction pair or rolling element can be realized.
Further, size most preferably 150MPa is molded in the step 3.
Further, the orientation lubrication channel 5 in the step 7 by vacuum oil storage method in porous media 6 storesLubricating oil.
Further, the vacuum oil storage method is specially and porous media 6 is placed in lubricating oil, then by porous media6 and lubricating oil be placed in > 48h in vacuum degree < 10-3Pa vacuum environment, Chu Manrun in the directed porosity of porous media 6 can be madeLubricating oil.
Further, the volatilizer 2 is selected from one of benzoic acid, sorbic acid, naphthalene etc..
Further, the fluoroplastics 1 are selected from polytetrafluoroethylene (PTFE), tetrafluoroethylene-perfluoro alkoxy vinyl ethers copolymerAt least one of.
Further, the preferred inorganic polymer high-temperature seal adhesive of the step 5 high temperature sealant 3, heat-resisting quantity > 500℃。
The invention adopts the above technical scheme, orients the lubricating oil in porous oil storage medium by orientation lubrication channel 5It is output to rolling linear guide to rub secondary interface, reduces lubricating oil and brim over leakage, raising lubricating oil utilization rate is conducive to operating condition ringHumectation is sliding.
These are only the preferred embodiment of the present invention, is not intended to restrict the invention, for those skilled in the artFor member, the invention may be variously modified and varied, all within the spirits and principles of the present invention, any modification for being made,Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.