CN1016982B - Method for manufacturing integral slide bearing sleeve - Google Patents
Method for manufacturing integral slide bearing sleeveInfo
- Publication number
- CN1016982B CN1016982B CN 88105062 CN88105062A CN1016982B CN 1016982 B CN1016982 B CN 1016982B CN 88105062 CN88105062 CN 88105062 CN 88105062 A CN88105062 A CN 88105062A CN 1016982 B CN1016982 B CN 1016982B
- Authority
- CN
- China
- Prior art keywords
- graphite
- lath
- bearing sleeve
- bearing
- bearing shell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 238000000034 method Methods 0.000 title claims description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 60
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 59
- 239000010439 graphite Substances 0.000 claims abstract description 59
- 239000002184 metal Substances 0.000 claims abstract description 7
- 229910052751 metal Inorganic materials 0.000 claims abstract description 7
- 238000010438 heat treatment Methods 0.000 claims abstract description 4
- 238000004804 winding Methods 0.000 claims abstract description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 8
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 6
- 229910017604 nitric acid Inorganic materials 0.000 claims description 6
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 4
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 4
- 239000000292 calcium oxide Substances 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 4
- 230000020477 pH reduction Effects 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 3
- 230000006835 compression Effects 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 238000005245 sintering Methods 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 2
- 238000010306 acid treatment Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- 238000012216 screening Methods 0.000 claims description 2
- 238000003756 stirring Methods 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 abstract description 6
- 239000010959 steel Substances 0.000 abstract description 6
- 238000005096 rolling process Methods 0.000 abstract description 4
- 238000005461 lubrication Methods 0.000 abstract 1
- 238000003825 pressing Methods 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 3
- 239000008041 oiling agent Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 239000003566 sealing material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 210000003050 axon Anatomy 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Landscapes
- Sliding-Contact Bearings (AREA)
Abstract
The present invention provides a slide bearing sleeve and a production method thereof. The bearing sleeve is integral and is characterized in that the bearing sleeve is made of flexible graphite; a flexible metal net is accessorily used as an inner frame; the surface is completely formed by compacting the flexible graphite and is smooth and continuous. Compared with the existing bearings, the slide bearing sleeve has the characteristics of self lubrication and high temperature resistance; the slide bearing sleeve can replace rolling bearings of front roller passage of a steel rolling heating furnace and similar bearings or bearing sleeves. The production method has the technical scheme that the flexible graphite and the flexible metal net are sheathed with molds for pressing forming after being formed by winding.
Description
The present invention relates to mechanical parts is the manufacture method of plain bearing bush.
Existing bearing outside the degasification axon is held, all needs oiling agent lubricated, and this makes, and bearing is incompetent works under the high temperature occasion.Because under the high temperature, oiling agent can be dried, and causes under the unlubricated state of bearing work and damages.
Bearing bush adopts metallic material such as Babbitt mostly, also have to adopt nonmetallic material, but only plastics is more common.In recent years, hard graphite also begins to be used as the bearing liner material, just has the plain bearing bush of carbon graphite as Japan, and U.S. Pat 4560409 was also described a kind of bearing shell that has adopted hard graphite to make for another example.Strengthened the bearing resistance to high temperature though adopt hard graphite to make bearing shell, can not reduce the boundary friction of bearing, still wanted bearing to make with lubricator, moreover making method is also complicated.
Expanded graphite is a kind of new material that just occurs 1960's, normally using as quiet dynamic sealing material, is that Expanded graphite uses as sealing material as a kind of expanded graphite of describing in the patent application (application number is 85103917) of Chinese patent disclosed " expansible graphite and manufacture method thereof " on the 861029th.Described the example of making bearing material with Expanded graphite in the U.S. Pat 4253714, but only be used for the bearing top layer and be mixed using in other oxide, purpose is to reduce boundary friction, improves resistance to high temperature, and the bearing of producing still needs oiling agent lubricated.
Purpose of the present invention just is to provide a kind of manufacture method of novel removable metal, and the bearing shell made from the method has high temperature resistant, can selflubricating.
The object of the present invention is achieved like this: earlier the graphite lath is twined one on the cylindrical die core and enclose or a few, guarantee that the innermost layer is the graphite lath.Repeatedly go up the wire netting bar then and continue in the lump closely to twine on mold core, last lap or a few twine the graphite lath, and the wire netting bar of surplus is cut, and guarantees that outermost surface also is the graphite lath.Put the compression and moulding of outer mold pressurization pressure machine then and promptly make bearing shell of the present invention.
Because Expanded graphite is high temperature resistant, friction factor is little, possesses self lubricity, thus adopt the present invention make bearing shell have high temperature resistant, advantage that can selflubricating.The inventive method also is simple and easy to do.
Describe the present invention in detail below in conjunction with embodiments of the invention and accompanying drawing thereof.
Fig. 1 is a kind of concrete structure schematic representation of bearing shell of the present invention.
Fig. 2 is that bearing shell of the present invention shown in Figure 1 is installed and used schematic representation.
A kind of concrete scheme of the present invention realizes with following steps:
1, chooses flexible graphite plate and flexible metal net.The thickness of flexible graphite plate is 0.2-0.3mm, and expansion multiple is that 300-500 is preferably, and flexible metal net is selected copper mesh or stainless (steel) wire (order is several to be determined according to the bearing shell requirement of strength) for use better.
The flexible graphite plate that flexible graphite plate preferably selects for use the method by inventor invention to produce, this method is finished by following steps:
(1), choosing purity is that the granularity of 99%-100% is a 250-300 purpose graphite scale;
(2), with graphite scale acidification.
Successively adopt concentration be 60-70% nitric acid and concentration are arranged is the sulfuric acid treatment of 93-98%, the proportioning of employing is:
Graphite: nitric acid=0.1-3: 1.25-1.5
Graphite: sulfuric acid=0.1-3.5: 1(the best is 0.5: 1)
ⅰ, earlier graphite is handled with nitric acid dousing, the time is with 5-8 hour the best, and temperature requirement is a normal temperature to 105 ℃;
ⅱ, filtering salpeter solution are put into sulfuric acid with graphite and are soaked, and the time, temperature requirement was the same with 3-10 hour the best.
(3), basification
ⅰ, with the graphite filtering acid solution of acidification, with pH value be the water of 6-8 clean to pH value be 4, take out then, utilize 60-110 ℃ of temperature conditions oven dry water content to be no more than 5%;
ⅱ, add calcium oxide powder (addition is good with the 3-10% of graphite weight) then, stir, placed 1-26 hour, the calcium oxide composition is fallen in screening then;
(4), heat treatment
At 1000-1100 ℃, be preferably and put into the instantaneous sintering of sintering furnace under 1050 ℃ of temperature.
Can get expansion multiple after the heat treatment and reach 300-400 graphite worm doubly.
(5), with expanded graphite worm 60-100kg/cm
2Surface pressure make the thick sheet material of 0.2-0.2mm, use the calender press polish again, the physical and chemical index of this flexible graphite sheet material is as shown in table 1 below:
Table 1
The project physical and chemical index
Density (g/cm
2) 1.2～2.08
Tensile strength (kg/cm
2) 80～140
Compressive strength (kg/cm
2) 32～3820
0.12(graphite and 45# steel)
Coefficient of sliding friction 0.15(graphite and graphite)
Interlayer 11.0～60.0 * 10
-4
Linear expansion coeffcient (50～300 ℃)
Serviceability temperature-200～500 is ℃ (non-oxide
Medium can reach 1600 ℃)
Shore hardness 10～31
Ash content (%) 0.26
Purity (%)＞99
(Ω-cm) axial 6 * 10 for specific conductance
-4Radially 5 * 10
-2
T＝250～1100℃
Thermal diffusivity (α/cm
2/ Sec) α=0.026～0.011
2, graphite cake and the wire netting of choosing is cut into lath or net bar with cutting device.Width is decided (the net bar slightly is narrower than lath) according to required bearing shell length, and length is then decided (the net bar is shorter than lath slightly) according to external diameter yardstick in the bearing shell, roughly can determine by following formula:
L= (r
1-r
2)/(d) ×π(r
1+r
2)
L: lath or net bar are long; D: lath or net bar are thick; r
1: the bearing shell external diameter; r
2: the bearing shell internal diameter.
3, make bearing shell.Earlier the graphite lath being twined one on the cylindrical die core encloses or a few, guarantee that the innermost layer is the graphite lath, repeatedly go up the wire netting bar then and continue in the lump on mold core, closely to twine that last lap or a few twine the graphite lath, the wire netting bar of surplus is cut, and guarantees that outermost surface also is the graphite lath.Winding finishes and puts outer mold liquor charging press pressurization (static pressure 80-120kg/cm
2Getting final product) moulding promptly makes bearing shell.
The usage mode of bearing shell 1 is with reference to figure 2, and its is fixing with bearing support 4, mechanical axis 5(stationary fit) cover Upper shaft sleeve 6(steel material, as the 45# steel) 1 li on insertion bearing shell, axle sleeve 6 and bearing shell 1 are movingly, rely on bearing shell 1 selflubricating, thereby need not add and send oily device.
Claims (2)
1, a kind of manufacture method of bush bearing bearing shell is characterized in that: with following steps finish-
(1), to choose thickness be 0.2-0.3mm, expansion multiple is flexible graphite plate and the flexible metal net of 300-500;
(2), above-mentioned graphite cake and wire netting are cut into lath or net bar, the net bar slightly is narrower than lath;
(3), earlier the graphite lath being twined one on the cylindrical die core encloses or a few, guarantee that the innermost layer is the graphite lath, repeatedly going up the wire netting bar then continues closely to twine on mold core in the lump, the graphite lath is only twined in last lap or a few windings, the wire netting bar of surplus is cut, guarantee that outermost surface also is the graphite lath, put the external mold compression and moulding then.
2, bearing shell according to claim 1 or its manufacture method is characterized in that: said graphite sheet be make as follows-
(1), choosing purity is that the granularity of 99%-100% is a 250-300 purpose graphite scale;
(2), with graphite scale acidification:
Successively adopt concentration be 60-70% nitric acid and concentration are arranged is the sulfuric acid treatment of 93-98%, the proportioning of employing is:
Graphite: nitric acid=0.1-3: 1.25-1.5
Graphite: sulfuric acid=0.1: 1,
ⅰ, earlier graphite is handled with nitric acid dousing, the time is with 5-8 hour the best, and temperature requirement is a normal temperature to 105 ℃;
ⅱ, filtering salpeter solution are put into sulfuric acid with graphite and are soaked, and the time, temperature requirement was the same with 3-10 hour the best;
(3), basification:
ⅰ, with the graphite filtering acid solution of acidification, with pH value be the water of 6-8 clean to pH value be 4, take out then, utilize 60-110 ℃ of temperature conditions oven dry water content to be no more than 5%;
ⅱ, add calcium oxide powder then.(addition is good with the 3-10% of graphite weight) stirs, and places 1-26 hour, and the calcium oxide composition is fallen in screening then;
(4), heat treatment:
Under 1000-1100 ℃ of temperature, put into the instantaneous expanded graphite worm that sinters into of sintering furnace;
(5), with expanded graphite worm 60-100kg/cm
2Surface pressure make the thick sheet material of 0.2-0.3mm, use the calender press polish again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88105062 CN1016982B (en) | 1988-04-29 | 1988-04-29 | Method for manufacturing integral slide bearing sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88105062 CN1016982B (en) | 1988-04-29 | 1988-04-29 | Method for manufacturing integral slide bearing sleeve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1037197A CN1037197A (en) | 1989-11-15 |
| CN1016982B true CN1016982B (en) | 1992-06-10 |
Family
ID=4833293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88105062 Expired CN1016982B (en) | 1988-04-29 | 1988-04-29 | Method for manufacturing integral slide bearing sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1016982B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1075561C (en) * | 1997-11-26 | 2001-11-28 | 冶金工业部长沙矿冶研究院 | Method for preparing arsenic from arsenic-containing acid liquid by magnetic field effect |
| CN101761581B (en) * | 2010-02-04 | 2012-07-04 | 大连三环复合材料技术开发有限公司 | Support bearing used for horizontal ball mill and preparation process thereof |
| CN109253166A (en) * | 2018-10-23 | 2019-01-22 | 江苏新风网业有限公司 | A kind of self-lubricating bearing copper mesh and its manufacturing method |
| CN112664563A (en) * | 2020-11-23 | 2021-04-16 | 东风锻造有限公司 | Method for prolonging service life of main bearing bush of large hot die forging press |
-
1988
- 1988-04-29 CN CN 88105062 patent/CN1016982B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN1037197A (en) | 1989-11-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| AD01 | Patent right deemed abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned | ||
| CI01 | Correction of invention patent gazette |
Correction item: 7. the patent right is deemed to be abandoned False: 88105062.8 Number: 38 Page: 110 Volume: 9 |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: FIGURE OF ABSTRACT TO: NONE Free format text: CORRECT: FIGURE OF ABSTRACT |
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| ERR | Gazette correction |
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| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |