CN204591991U - There is the gear pump bearing of hardfacing alloy layer - Google Patents
There is the gear pump bearing of hardfacing alloy layer Download PDFInfo
- Publication number
- CN204591991U CN204591991U CN201520075778.9U CN201520075778U CN204591991U CN 204591991 U CN204591991 U CN 204591991U CN 201520075778 U CN201520075778 U CN 201520075778U CN 204591991 U CN204591991 U CN 204591991U
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- CN
- China
- Prior art keywords
- alloy layer
- hardfacing alloy
- gear pump
- pump bearing
- matrix
- 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 - Fee Related
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Abstract
The utility model discloses a kind of gear pump bearing with hardfacing alloy layer, it comprises: have the matrix of center hole, be pressed together on the hardfacing alloy layer that Ceramic shaft sleeve in center hole and built-up welding are arranged on matrix friction pair one end.The utility model meets corrosion resistance to acid, alkali, salt and wear resistance requirement, reduces the manufacture cost of gear pump.
Description
Technical field
The utility model relates to a kind of gear pump bearing with hardfacing alloy layer.
Background technique
As everyone knows, the medium of gear pump often adopts hydrochloric acid, sulfuric acid and nitric acid etc. that corrosivity is stronger or their mixture.So in this case, will be not only corrosion-resistant but also wear-resistant to the requirement of gear pump fricting movement pair, specifically as axle journal and this pair kinematic pair of plain bearing bore of moving gear master/slave in gear pump, as shown in Figure 1.Meanwhile, the overcurrent surface of contact of working medium also will have corrosion resistant requirement.Though the common Austenitic Stainless Steel of gear pump can meet corrosion resistance requirement to a certain degree, because strengthening its hardness, intensity etc., wear resistance just cannot meet the demands.And if adopt heat-treatable strengthened high carbon and chromium stainless steel (as 9Cr18Mo etc.), though they improve its hardness and intensity by heat treatment reinforcement, meet wear resistance requirement, but this kind of stainless steel cannot meet the corrosion resistance requirement to major part acid, alkali, salt.Also have in the industry and the vital parts such as the bearing in gear pump are all adopted higher hardness and corrosion proof high performance alloys, but though this high performance alloys can meet the requirement of the existing operating mode of gear pump, its price is very high, current market price reaches hundreds of thousands per ton unit, and this considerably increases the manufacture cost of gear pump undoubtedly.
Model utility content
The utility model object is: provide a kind of gear pump bearing with hardfacing alloy layer, meets the corrosion resistance to acid, alkali, salt and wear resistance requirement, reduces the manufacture cost of gear pump.
The technical solution of the utility model is: a kind of gear pump bearing with hardfacing alloy layer, and it comprises: have the matrix of center hole, be pressed together on the hardfacing alloy layer that Ceramic shaft sleeve in center hole and built-up welding are arranged on matrix friction pair one end.
On the basis of technique scheme, comprise following attached technological scheme further:
Described hardfacing alloy layer is stellite, and matrix is through heat treated low-carbon martensitic steels or two phase stainless steel.
The axial thickness of described hardfacing alloy layer is 2 ~ 3mm.
Described center hole is interference fit with coordinating between Ceramic shaft sleeve.
The surface of described hardfacing alloy layer and an end face of Ceramic shaft sleeve flush.
Gap is there is between the other end of described Ceramic shaft sleeve and the matrix the other end.
The utility model advantage is:
The utility model meets corrosion resistance to acid, alkali, salt and wear resistance requirement, reduces the manufacture cost of gear pump.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further described:
Fig. 1 is the common kinematic pair schematic diagram of prior art;
Fig. 2 is sectional view of the present utility model.
Embodiment
Embodiment: as shown in Figure 2, the utility model provides a kind of specific embodiment with the gear pump bearing of hardfacing alloy layer, and it comprises: have the matrix 10 of center hole 12, be pressed together on the hardfacing alloy layer 30 that Ceramic shaft sleeve 20 in center hole 12 and built-up welding are arranged on matrix 10 friction pair one end.Matrix 10 is through heat treated low-carbon martensitic steels or two phase stainless steel.Coordinating between center hole 12 with Ceramic shaft sleeve 20 is interference fit.
Hardfacing alloy layer 30 is Si Taili (Stellite) alloy, and its axial thickness is 2 ~ 3mm.The surface of hardfacing alloy layer 30 and an end face of Ceramic shaft sleeve 20 flush.Then and between matrix 10 the other end there is gap in the other end of Ceramic shaft sleeve 20.Ceramic shaft sleeve 20 has very high hardness, and corrosion resistance is also fine.
The utility model middle gear pump bearing, meets not only wear-resisting but also corrosion resistant requirement, also greatly reduces cost of production, meets environmental protection that country advocates, green, energy-conservation policy of developing the economy.
Certain above-described embodiment, only for technical conceive of the present utility model and feature are described, its object is to person skilled in the art can be understood content of the present utility model and implement according to this, can not limit protection domain of the present utility model with this.All equivalent transformations of doing according to the Spirit Essence of the utility model main technical schemes or modification, all should be encompassed within protection domain of the present utility model.
Claims (6)
1. there is a gear pump bearing for hardfacing alloy layer, it is characterized in that it comprises: there is the matrix (10) of center hole (12), be pressed together on the hardfacing alloy layer (30) that Ceramic shaft sleeve (20) in center hole (12) and built-up welding are arranged on matrix (10) friction pair one end.
2. a kind of gear pump bearing with hardfacing alloy layer as claimed in claim 1, it is characterized in that: described hardfacing alloy layer (30) is stellite, and matrix (10) is through heat treated low-carbon martensitic steels or two phase stainless steel.
3. a kind of gear pump bearing with hardfacing alloy layer as claimed in claim 2, is characterized in that: the axial thickness of described hardfacing alloy layer (30) is 2 ~ 3mm.
4. a kind of gear pump bearing with hardfacing alloy layer as claimed in claim 3, is characterized in that: coordinating between described center hole (12) with Ceramic shaft sleeve (20) is interference fit.
5. a kind of gear pump bearing with hardfacing alloy layer as claimed in claim 1 or 2 or 3 or 4, is characterized in that: the surface of described hardfacing alloy layer (30) and an end face of Ceramic shaft sleeve (20) flush.
6. a kind of gear pump bearing with hardfacing alloy layer as claimed in claim 5, is characterized in that: there is gap between the other end of described Ceramic shaft sleeve (20) and matrix (10) the other end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520075778.9U CN204591991U (en) | 2015-02-03 | 2015-02-03 | There is the gear pump bearing of hardfacing alloy layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520075778.9U CN204591991U (en) | 2015-02-03 | 2015-02-03 | There is the gear pump bearing of hardfacing alloy layer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204591991U true CN204591991U (en) | 2015-08-26 |
Family
ID=53928147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520075778.9U Expired - Fee Related CN204591991U (en) | 2015-02-03 | 2015-02-03 | There is the gear pump bearing of hardfacing alloy layer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204591991U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115163484A (en) * | 2022-07-26 | 2022-10-11 | 宁波玛格化纤设备有限公司 | Corrosion-resistant, wear-resistant and anti-engagement gear pump sliding bearing |
-
2015
- 2015-02-03 CN CN201520075778.9U patent/CN204591991U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115163484A (en) * | 2022-07-26 | 2022-10-11 | 宁波玛格化纤设备有限公司 | Corrosion-resistant, wear-resistant and anti-engagement gear pump sliding bearing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150826 Termination date: 20190203 |