CN1047725A - Elastic thrust block and manufacture method - Google Patents
Elastic thrust block and manufacture method Download PDFInfo
- Publication number
- CN1047725A CN1047725A CN 90103367 CN90103367A CN1047725A CN 1047725 A CN1047725 A CN 1047725A CN 90103367 CN90103367 CN 90103367 CN 90103367 A CN90103367 A CN 90103367A CN 1047725 A CN1047725 A CN 1047725A
- Authority
- CN
- China
- Prior art keywords
- thrust block
- elastic thrust
- sintering
- plastics
- cushion blank
- 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.)
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- Sliding-Contact Bearings (AREA)
Abstract
The present invention is elastic thrust block and manufacture method.The thrust position that it is used for the hydraulic generator unit replaces former babbitt metal bearing.It is characterized in that the poroelasticity pad that forms with wire is a matrix, filling-modified polytetrafluoroethylplastic plastic makes the surface form wearing layer.It is that operations such as sintering of plastics are made by the manufacturing of cushion blank, batch mixing, elastic thrust block compacting.
Friction factor of the present invention little (generally 0.05～0.08) friction surface has self-lubricating property, but the distortion of tiling mechanical temperature is adjusted self.
Description
What the present invention relates to is applied elastic thrust block in hydraulic generator unit push stopping part position and manufacture method, belongs to mechanical parts.
At present, babbitt metal bearing is all adopted at the thrust position of the hydraulic generator unit of the various capacity of China's production and use.This watt ratio forces down, and big (generally 0.5～0.20) adaptive temperature of friction factor is low, the mechanically deformation and the thermal distortion of tiling can not self be adjusted, thereby cause oil film breakdown, and tiling heavy wear is ablated, and causes serious accidents such as hydraulic generator unit shutdown.
Task of the present invention is to propose a kind of friction factor little (generally 0.05～0.08) friction surface to have self-lubricating property, but elastic thrust block and manufacture method that the distortion of tiling mechanical temperature is adjusted self.
This elastic thrust block is that the poroelasticity pad that forms with wire is a matrix, filling-modified polytetrafluoroethylplastic plastic, and its degree of depth is 1/2～1/3, and to make the surface form thickness be 0.5～3mm wearing layer.The modified Teflon plastics are that teflon 60～95% is mixed and made into lead 5～40%.
For making elastic thrust block, can take following method.
1. manufacturing of cushion blank: a. is the WU bronze wire of 0.4～0.6mm with diameter, is wound in the spiral spring, its external diameter 4～6mm, and length is 300～600mm.B. the spiral spring is placed in watt mould, be pressed into the cushion blank on press machine, its porosity ratio is 50～75%.
2. batch mixing: 200 purpose lead powder are sneaked in the polytetrafluoroethylene powder, cross 2～4 times with 40～80 mesh standard sieves.
3. the compacting of elastic thrust block: the cushion blank is packed in the segmental pad mould of the size that requires, the modified Teflon of packing into uniformly then, compression moulding on press machine, pressure is 25～35MPa.
4. sintering of plastics: elastic thrust block is placed in the sintering furnace, carried out sintering under hydrogen shield, its sintering temperature is 350～380 ℃, and constant temperature was come out of the stove natural cooling in 15～35 minutes.
This watt material can also be made supporting skid rail of water work steel gate and replace former bakelite slideway, has reduced door power, reduces dam door machine tonnage.Also can solve the excessive phenomenon of the local contact stress of former bakelite slideway and guide rail in addition.
Claims (2)
1, a kind of elastic thrust block, it is characterized in that it is that the poroelasticity pad that forms with wire is a matrix, filling-modified polytetrafluoroethylplastic plastic, its degree of depth is 1/2～2/3, and to make the surface form thickness be 0.5～3mm wearing layer, the modified Teflon plastics are plumbous 5-40%, and teflon 60～95% mixes.
2; a kind of method of making the described elastic thrust block of claim 1; comprise manufacturing of cushion blank; batch mixing; the compacting of elastic thrust block; operations such as sintering of plastics; it is characterized in that: manufacturing in the operation of cushion blank is the WU copper wire of 0.4～0.6mm with diameter earlier; be wound in the spiral spring; its external diameter 4～6mm; length is 300～600mm; then the spiral spring is placed in watt mould; on press machine, be pressed into the cushion blank; its porosity ratio is 50～70%; batch mixing is that 200 purpose lead powder are sneaked in the polytetrafluoroethylene powder; cross 2～4 times with 40～80 mesh standard sieves, the compacting of elastic thrust block is the cushion blank to be packed in the segmental pad mould of the size that requires into the modified Teflon of packing into uniformly then; compression moulding on press machine; pressure is 25～35MPa, and sintering of plastics is that elastic thrust block is placed in the sintering furnace, carries out sintering under hydrogen shield; its sintering temperature is that 350～380 ℃ of constant temperature were come out of the stove natural cooling in 15～35 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90103367 CN1015323B (en) | 1990-07-02 | 1990-07-02 | Elastic thrust bushes and method for manufacturing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90103367 CN1015323B (en) | 1990-07-02 | 1990-07-02 | Elastic thrust bushes and method for manufacturing same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1047725A true CN1047725A (en) | 1990-12-12 |
| CN1015323B CN1015323B (en) | 1992-01-22 |
Family
ID=4878033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90103367 Expired CN1015323B (en) | 1990-07-02 | 1990-07-02 | Elastic thrust bushes and method for manufacturing same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1015323B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1081300C (en) * | 1998-11-02 | 2002-03-20 | 大连三环复合材料技术开发公司 | Technology for manufacturing elastic metal-plastic thrust bearing |
| CN114233754A (en) * | 2022-01-05 | 2022-03-25 | 大连三环复合材料技术开发股份有限公司 | Composite material sliding bearing convenient for monitoring service life and preparation method |
-
1990
- 1990-07-02 CN CN 90103367 patent/CN1015323B/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1081300C (en) * | 1998-11-02 | 2002-03-20 | 大连三环复合材料技术开发公司 | Technology for manufacturing elastic metal-plastic thrust bearing |
| CN114233754A (en) * | 2022-01-05 | 2022-03-25 | 大连三环复合材料技术开发股份有限公司 | Composite material sliding bearing convenient for monitoring service life and preparation method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1015323B (en) | 1992-01-22 |
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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 | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| IP01 | Partial invalidation of patent right |
Decision date of declaring invalidation: 19980513 Decision number of declaring invalidation: 1039 |
|
| 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 |