CN1321767C - Method for uniform distribution of greasing substance on solid surface, apparatus and application thereof - Google Patents
Method for uniform distribution of greasing substance on solid surface, apparatus and application thereof Download PDFInfo
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- CN1321767C CN1321767C CNB2004100521541A CN200410052154A CN1321767C CN 1321767 C CN1321767 C CN 1321767C CN B2004100521541 A CNB2004100521541 A CN B2004100521541A CN 200410052154 A CN200410052154 A CN 200410052154A CN 1321767 C CN1321767 C CN 1321767C
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Abstract
The present invention provides a method which enables lubricating substances to be uniformly distributed on the solid surface, which comprises the following steps that the lubricating substances are firstly converted into a gas state through a physical mode so that the gas-state lubricating substance environment is formed; the surface on which the solid needs the lubrication is in the gas-state lubricating substance environment so that the gas-state lubricating substances can be absorbed and coagulated on the surface of the solid. A device for achieving the method comprises a powder lifting mechanism, an operating room, and a lubricating substance vaporization assembly, the powder lifting mechanism is arranged at the outer side of the operating room or in the operating room, and the lubricating substance vaporization assembly is communicated with the lower part of the operating room through a pipeline. The method of the present invention can be applied to lubricating and processing the powder solid surface or the mould wall of a powder compacting mould, and the present invention can form a uniform thin lubricating layer on the solid surface, can control the thickness of the lubricating layer, and can use a lubricating agent with high efficiency. The present invention has the advantages of simple operation process and low cost, is suitable for mass production, and is easy to be popularized and used.
Description
Technical field
The present invention relates to surface of solids lubrication technology, particularly evenly lubricated method and the device thereof in pressed powder surface.
Background technology
When adopting fluid lubricant to lubricate the surface of solids, generally lubricant is smeared or is sprayed on the surface that solid need lubricate, can form thicker lubricating layer on the surface of solid like this, and the difficult control of the thickness of lubricating layer, it is special when the surface of solids is uneven, fluid lubricant accumulates in the place of depression easily, and it is less to distribute at the position of projection, so just is difficult to make fluid lubricant to be distributed in the surface of solids equably.When the lubricating layer thickness requirement is very thin, realized by the method for smearing or spraying with regard to being difficult to.When adopting pressed powder to make lubricant, often powder is used in fluid lubricant together.In powder compaction process, need be lubricated powder, prevent that powder from pulling mould, prolong the life-span of mould; And powder is lubricated the method for smearing or spraying fluid lubricant that can't adopt, but the method that is mixed together by lubricant and other powder with powder morphology, be mixed with and contain mixture of powders (" powder metallurgy principle " with lubrication powder, the Huang Peiyun chief editor, metallurgical industry publishing house, second edition, 2004, P1, P168), powder metallurgy lubricant commonly used mainly is that (" powder metallurgy die design manual " prints red plumage to the zinc stearate powder, the Zhang Huacheng chief editor in the production, China Machine Press, second edition, 2002, P473).Application number is that 98811297 Chinese invention patent application discloses a kind of lubricant that is used for metallurgical powder composition, this lubricant is solid state powder at normal temperatures, mix the back with iron-based powder and constitute metal-powder compositions, compacting sintering powdered metallurgical product then; This lubricant and other powder with powder morphology is mixed together the method that contains the mixture of powders with lubrication powder that is mixed with, its weak point is: reach lubricant effect preferably, need sneak into more lubricant, but being difficult to realization needs the surface of the powder of shaping all to be bonded with lubricant powder equably, and it is more after the sintering owing to the lubricant residue, make the density of powdered metal parts lower, thereby influence the performance quality of powdered metal parts.Application number is that 03146264 Chinese invention patent application discloses a kind of powder metallurgy electrostatic die wall lubrication device, by making static on the powder lubricant band, powder lubricant is adsorbed on the die wall, its shortcoming is that its operating process is complicated, reduced operating efficiency, needed electrostatic generator, production cost rises, and the distribution of powder lubricant on die wall is also even inadequately, is subjected to the influence of static content bigger.The patent No. is that 03138557 Chinese invention patent application discloses a kind of " method and apparatus that is used for lubricated melten glass mould ", this method mainly is that the carbonaceous fuel imperfect combustion is produced pitch-black flame, generation can be used for the melten glass contact surface of glass manufacturing machine is applied the carbon black granules of lubricated usefulness, this carbon black granules need produce by chemical reaction, operating condition is had relatively high expectations, and this carbon black granules is mainly used in lubricated large-area solid surface (glass is made the melten glass contact of machine), the mode of action is the cigarette shape, even inadequately in spatial distributions, can not perform well in the lubricated field of powder solid.The patent No. is that the Japanese patent of invention of JP9-104902 discloses a kind of " powder forming method ", behind the lubricant heating and melting, form the steam fog lubricant by spraying, the absorption of steam fog lubricant is condensed on metal dust or the mould inner wall, form uniform lubricating film, then with powder pressing.Because its method is directly jet lubrication agent on metal dust, therefore lubricant can only be sprayed onto on the powder on surface, need to stir simultaneously to shake powder, making greasing substance be distributed to the powder that is not directly injected to lubricant gets on, therefore have bigger randomness, can not guarantee that in fact lubricant is distributed on the surface of all powder fully equably.
Summary of the invention
The objective of the invention is to overcome the shortcoming and defect of prior art, provide a kind of and act on simple, efficient, low-cost, the safe and reliable greasing substance that makes and be evenly distributed on the method on pressed powder surface.
Another object of the present invention is to provide a kind of greasing substance that makes of said method of realizing to be evenly distributed on the device on pressed powder surface.
Purpose of the present invention is achieved through the following technical solutions: this method comprises following concrete steps---at first make greasing substance pass through physics mode (chemical reaction does not take place) and change into gaseous state, form gaseous state greasing substance environment, make powder pass described gaseous state greasing substance environment again, the surface of powder is surrounded by the gaseous state greasing substance fully, and make the greasing substance of gaseous state adsorb the surface that condenses in described pressed powder.
Described greasing substance can be oil or other liquid with lubrication; Described gaseous state can be steam condition or steam fog state.
Described physics mode can be nature volatilization, also can adopt mode of heating to make greasing substance change into gaseous state by liquid state, and the temperature of gaseous state greasing substance is higher than the temperature on the surface that solid need lubricate.
In order to realize this method better, can make it change into gaseous state by the atomized lubrication material; Also can adopt the atomizing and the mode of action that heating combines, realize better gasification result.
In order to realize this method better, powder (solid) is fallen from top to bottom, the gaseous state greasing substance flows from bottom to top, and the flow direction of gaseous state greasing substance is opposite with the direction of motion of powder.
In order to realize this method better, can dehydrate processing to described powder earlier.
The device that makes greasing substance be evenly distributed on the pressed powder surface of realizing said method comprises powder hoisting mechanism, operating room, greasing substance vaporization component, described powder hoisting mechanism is arranged on the outside, operating room or is positioned at inside, operating room, and described greasing substance vaporization component is connected with the bottom of operating room by pipeline.
Described operating room is a cavity volume, and the powder hoisting mechanism is in the outside of operating room, and its dust outlet pipe stretches into the operating room from the top of operating room; Described greasing substance vapourizing unit is positioned at the opposite side of operating room, is connected with the downside of operating room by pipeline.
The powder hoisting mechanism comprises powder stock container, powder carrier pipe, helical blade, motor, the powdering inlet of described powder carrier pipe is within the powder stock container and near the bottom of powder stock container, described helical blade is positioned at the powder carrier pipe, and motor is connected with the center-pole axle of helical blade.Described powder stock container can be positioned at the operating room under and relative with operating room's bottom opening so that powder repeat absorption, make powder surface have thicker oil film; Described powder stock container also can be positioned at other positions, collects the container of processing the back powder and establish one in addition under the operating room, and this structure can make powder only through once absorption, and its surperficial oil film is thinner.
The top of described operating room is provided with an opening, is provided with exhaust fan at opening part, and described opening communicates by the opening of circulating line with the middle and lower part, operating room, forms the passage that lubricated gas circulation flows.
The space of described operating room internal upper part is provided with vibratory sieve, and described vibratory sieve is connected with vibrating mechanism and is positioned at the dust outlet below of the powder carrier pipe of powder hoisting mechanism, and described vibrating mechanism is fixed on the sidewall of operating room.
Described greasing substance vaporization component comprises container and the heating element heater of adorning lubricant, and described container communicates with the operating room by pipeline, and described heating element heater is installed in the bottom of container; In container and pipeline that the operating room communicates, exhaust fan can be set.
Described greasing substance vaporization component also can comprise oil pump, sprayer, and described oil pump is arranged on the container top of dress lubricant, and the interior pipeline of container that the inlet of oil pump and stretches into the dress lubricant is connected, and the outlet of oil pump is connected by pipeline with sprayer.
The above-mentioned method that makes greasing substance be evenly distributed on the pressed powder surface can be applicable to the lubricated on powder solid surface, makes evenly distribution greasing substance of powder solid surface.This powder through lubricated can be pressed into powder green compact, reburns and forms powdered metal parts.Said method also can be applicable to generally to smear or spraying coating process is more unmanageable or handle the lubricated of higher die wall (as the wall of powder compaction device) of quality requirement or zero device surface, and is especially good to rough surface, treatment effects such as surface that the lubricating layer thickness requirement is very thin.
Action principle of the present invention is: adsorbed gas is the base attribute of solid, can be by the Van der Waals force adelphotaxy together between the molecule.When airborne humidity is big, airborne steam just easily absorption condense in the surface of solid, when the temperature of steam is higher than the temperature of the surface of solids, the dry surface of solids is with regard to easier moisture absorption especially.In northerly winter, in the time of in outdoor inlet chamber, will tie the very thin even water smoke of one deck on the lens is exactly this reason.When in the space oily vapour being arranged, oil vapour will adsorb on the surface that condenses in solid as water vapour, form the very thin uniform oil film of one deck at the surface of solids, so just reached the purpose that makes greasing substance be evenly distributed in the surface of solids, it is lubricated that oil film can play antifriction.Because desorption requires the expenditure of energy, only desorption process could take place under the condition that heats and vacuumize, so the lubricating film that is adsorbed on the powder surface can stably exist.
The present invention compared with prior art has following advantage and beneficial effect: the lubricating layer that (1) forms is very thin very even, and stable; The lubricating layer of (2) can be efficiently, forming on irregular rough pressed powder surface apace, and can control the thickness of lubricating layer, lubricant can efficiently be utilized; (3) the lubricant consumption is few, utilizes the lubricant residue in the powder blank that the present invention produces few; (4) utilize the technology of the present invention can obtain the powder compaction part of higher density, thereby improved the quality of powder compaction part; (5) high lubricating effect can prolong service life of mould; (6) operating process is simple, and cost is lower, is suitable for producing in enormous quantities, is easy to promote the use of, and economic benefit is obvious, good market prospects.
Description of drawings
Fig. 1 is the structural representation of apparatus of the present invention.
Fig. 2 is the schematic diagram of another structure of apparatus of the present invention.
Fig. 3 is the schematic diagram of a structure again of apparatus of the present invention.
The specific embodiment
The present invention is described in further detail below in conjunction with embodiment, but embodiments of the present invention are not limited thereto.
Embodiment 1
Concrete structure of the present invention as shown in Figure 1, as seen from Figure 1, apparatus of the present invention comprise powder hoisting mechanism, operating room, greasing substance vaporization component, and described powder hoisting mechanism is arranged on the outside, operating room, and described greasing substance vaporization component is connected with the bottom of operating room by pipeline.Described powder hoisting mechanism is connected and composed by center-pole axle 3, powder carrier pipe 4, the motor 5 of container 1, band helical blade; The operating room is connected and composed by the container 19 of container 15, powder vibratory sieve 6, vibrating mechanism 7, exhaust fan 17, passage 18, collection powder; The greasing substance vapourizing unit is made of container 9, heating element heater 8.
The method that is realized by aforementioned means is: the center-pole axle 3 of motor 5 rotating band helical blades rotates, the mixed preparing that is contained in the container 1 is good, and the powder stock 2 (iron of crossing through vacuum drying treatment, copper, the graphite mixed-powder) promotes in the powder vibratory sieve 6 of eminence position in the operating room that is transported to container 15 through powder carrier pipe 4, vibrating mechanism 7 drives vibratory sieve 6 vibrations, powder is fallen from eminence dispersedly, the container 9 of lubricating oil 10 is equipped with in heating element heater 8 energising heating, make the rising of lubricating oil 10 temperature and be vaporized into oil vapour, oil vapour enters the operating room of container 15 under the effect of exhaust fan 14 through passage 13, oil vapour flows from bottom to top in the operating room, fully contact with the powder 16 that falls from top to bottom, oil vapour absorption condenses in the surface of powder, and distribute equably, form the thin uniform oil film of one deck, obtain the surface and adsorb the powder of one deck lubricating film that condensed, powder falls into the container 19 of collecting powder again, and the powder that has adsorbed one deck lubricating film that condenses is adsorbed on the surface of collecting can be used for powder compaction.Oil vapour flows from bottom to top in the operating room, reaches the top of the operating room of container 15, under the effect of exhaust fan 17, enters in the container 15 the recycling oil vapour again through passage 18.One valve 20 is arranged at the bottom of container 19, opens valve 20, and the powder in the container 19 can fall in the container 1 automatically, can repeat said process, obtains the surperficial powder that has than heavy oil film.
Embodiment 2
Another concrete form of apparatus of the present invention as shown in Figure 2, as seen from Figure 2, this device is substantially the same manner as Example 1, its difference part be: the greasing substance vapourizing unit is made of container 9, heating element heater 8, oil pump 11, sprayer 12; Oil pump 11 is arranged on container 9 tops of dress lubricant, and the interior pipelines of container 9 that the inlet of oil pump 11 and stretches into the dress lubricant are connected, and the outlet of oil pump 11 and sprayer 12 are connected by pipeline.Its mechanism is: oil pump 11 is smoked lubricating oil 10 and is atomized into oil vapour through the shower nozzle of sprayer 12.
A concrete form again of apparatus of the present invention as shown in Figure 3, as seen from Figure 3, this device is substantially the same manner as Example 1, its difference part be: the powder hoisting mechanism is within the operating room; The center-pole axle 3 of motor 5 rotating band helical blades rotates, the powder stock 2 that is contained in the container 1 is transported in the powder vibratory sieve 6 of eminence position through 4 liftings of powder carrier pipe, vibrating mechanism 7 drives vibratory sieve 6 vibrations, powder is fallen from eminence dispersedly, the container 9 of lubricating oil 10 is equipped with in heating element heater 8 energising heating, make the rising of lubricating oil 10 temperature and be vaporized into oil vapour, oil vapour enters the operating room of container 15 under the effect of exhaust fan 14 through passage 13, oil vapour flows from bottom to top in the operating room, fully contact with the powder 16 that falls from top to bottom, oil vapour absorption condenses in the surface of powder, and distribute equably, form the thin uniform oil film of one deck, obtain the surface and adsorb the powder of one deck lubricating film that condensed, powder falls into the container 19 of collecting powder again, and the powder that one deck lubricating film that condensed is adsorbed on the surface of collecting can be used for powder compaction.Oil vapour flows from bottom to top in the operating room, arrives the top of the operating room of container 15, under the effect of exhaust fan 17, enters in the container 15 the recycling oil vapour again through passage 18.One valve 20 is arranged at the bottom of container 19, opens valve 20, and the powder in the container 19 can fall in the container 1 automatically, can repeat said process, obtains the surperficial powder that has than heavy oil film.
Embodiment 4
Present embodiment is substantially the same manner as Example 1, its difference is: do not adopt powder hoisting mechanism shown in Figure 1, the substitute is and adopt general lifting device (as lifting machine or conveyer belt) that powder is risen in advance to be arranged at, and then be conveyed in the powder vibratory sieve 6 in the operating room by pipeline or conveyer belt than the higher or identical height of operating room container 15 horizontal levels with horizontal level.
Embodiment 5
Powder compaction powdered green compact with embodiment 1, embodiment 2, embodiment 3, embodiment 4 handled reburn and form powdered metal parts.
Embodiment 6
In the lubricant input powder compaction die cavity of having vaporized, allow lubricant vapour absorption condense in the surface of die wall.
Claims (9)
1, a kind of method that makes greasing substance be evenly distributed on the pressed powder surface, it is characterized in that comprising the steps: at first making greasing substance to change into gaseous state by physics mode, form gaseous state greasing substance environment, make powder pass described gaseous state greasing substance environment again, the surface of powder is surrounded by the gaseous state greasing substance fully, and make the greasing substance of gaseous state adsorb the surface that condenses in described pressed powder.
2, the method that makes greasing substance be evenly distributed on the pressed powder surface according to claim 1 is characterized in that: described greasing substance is the oil with lubrication; Described physics mode is heating; Described gaseous state is steam or steam fog state.
3, the method that makes greasing substance be evenly distributed on the pressed powder surface according to claim 1 is characterized in that: make it change into gaseous state by the atomized lubrication material; Or adopt atomizing greasing substance to be changed into gaseous state with the mode of action that heating combines.
4, the method that makes greasing substance be evenly distributed on the pressed powder surface according to claim 1, it is characterized in that: the way of contact of described powder and greasing substance falls from top to bottom for making powder, the gaseous state greasing substance flows from bottom to top, and both direction of motion is opposite.
5, the method that makes greasing substance be evenly distributed on the pressed powder surface according to claim 4 is characterized in that: powder with earlier described powder is dehydrated processing before the gaseous state greasing substance contacts.
6, the greasing substance that makes of the described method of realization claim 1～5 is evenly distributed on the device on pressed powder surface, it is characterized in that: comprise powder hoisting mechanism, operating room, greasing substance vaporization component, described powder hoisting mechanism is arranged on the outside, operating room or is positioned at inside, operating room, and described greasing substance vaporization component is connected with the bottom of operating room by pipeline.
7, the device that makes greasing substance be evenly distributed on the pressed powder surface according to claim 6, it is characterized in that: described powder hoisting mechanism comprises powder stock container, powder carrier pipe, helical blade, motor, the powdering inlet of described powder carrier pipe is within the powder stock container and near the bottom of powder stock container, described helical blade is positioned at the powder carrier pipe, and motor is connected with the center-pole axle of helical blade; Described powder stock container be positioned at the operating room under and relative with operating room's bottom opening.
8, the device that makes greasing substance be evenly distributed on the pressed powder surface according to claim 6, it is characterized in that: described operating room is a cavity volume, its top is provided with an opening, be provided with exhaust fan at opening part, described opening communicates by the opening of circulating line with the middle and lower part, operating room, forms the passage that lubricated gas circulation flows.
9, the device that makes greasing substance be evenly distributed on the pressed powder surface according to claim 6, it is characterized in that: described greasing substance vaporization component comprises container and the heating element heater of adorning lubricant, described container communicates with the operating room by pipeline, and described heating element heater is installed in the bottom of container; In container and pipeline that the operating room communicates, exhaust fan is set; Described greasing substance vaporization component also comprises oil pump, sprayer, and described oil pump is arranged on the container top of dress lubricant, and the interior pipeline of container that the inlet of oil pump and stretches into the dress lubricant is connected, and the outlet of oil pump is connected by pipeline with sprayer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100521541A CN1321767C (en) | 2004-11-11 | 2004-11-11 | Method for uniform distribution of greasing substance on solid surface, apparatus and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100521541A CN1321767C (en) | 2004-11-11 | 2004-11-11 | Method for uniform distribution of greasing substance on solid surface, apparatus and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1603029A CN1603029A (en) | 2005-04-06 |
| CN1321767C true CN1321767C (en) | 2007-06-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2004100521541A Expired - Fee Related CN1321767C (en) | 2004-11-11 | 2004-11-11 | Method for uniform distribution of greasing substance on solid surface, apparatus and application thereof |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101590526B (en) * | 2009-06-30 | 2011-01-05 | 北京科技大学 | Device used for preparing high-density powder metallurgy parts |
| US20150217370A1 (en) * | 2012-08-14 | 2015-08-06 | Nanogestion Inc. | Techniques using lubricant composite for manufacture of parts from metal powder |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4440800A (en) * | 1980-04-24 | 1984-04-03 | Unisearch Limited | Vapor coating of powders |
| JPH09104902A (en) * | 1995-10-05 | 1997-04-22 | Shin Etsu Chem Co Ltd | Powder compacting method |
| CN1241955A (en) * | 1996-12-24 | 2000-01-19 | 株式会社荏原制作所 | Apparatus for aerosol creation |
-
2004
- 2004-11-11 CN CNB2004100521541A patent/CN1321767C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4440800A (en) * | 1980-04-24 | 1984-04-03 | Unisearch Limited | Vapor coating of powders |
| JPH09104902A (en) * | 1995-10-05 | 1997-04-22 | Shin Etsu Chem Co Ltd | Powder compacting method |
| CN1241955A (en) * | 1996-12-24 | 2000-01-19 | 株式会社荏原制作所 | Apparatus for aerosol creation |
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| CN1603029A (en) | 2005-04-06 |
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| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Guangzhou Saiweila Elevator Rail System Co., Ltd. Assignor: South China University of Technology Contract fulfillment period: 2008.5.23 to 2013.5.22 contract change Contract record no.: 2009440001358 Denomination of invention: Method for uniform distribution of greasing substance on solid surface, apparatus and application thereof Granted publication date: 20070620 License type: Exclusive license Record date: 2009.8.26 |
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Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.5.23 TO 2013.5.22; CHANGE OF CONTRACT Name of requester: GUANGZHOU SAVERA LIFT TRACK SYSTEM CO., LTD. Effective date: 20090826 |
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Granted publication date: 20070620 Termination date: 20121111 |