CN1884864A - Sn-based alloy bearing bush billet machining method - Google Patents
Sn-based alloy bearing bush billet machining method Download PDFInfo
- Publication number
- CN1884864A CN1884864A CN 200510040754 CN200510040754A CN1884864A CN 1884864 A CN1884864 A CN 1884864A CN 200510040754 CN200510040754 CN 200510040754 CN 200510040754 A CN200510040754 A CN 200510040754A CN 1884864 A CN1884864 A CN 1884864A
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- China
- Prior art keywords
- box hat
- oven
- outwash
- plated
- temperature
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Abstract
The invention relates to a method for processing tin-base alloy axial tile blank, wherein the inventive axial tile has soft texture and high anti-abrasion with the friction couple formed by main axle coated with ceramic; the axle has long service life. The invention is characterized in that: it comprises: a, removing grease of the surface of steel frame; b, removing rust of steel frame; c, drying the steel frame; d, smelting tin; e, plating tin; f, eccentrically pouring; g, cooling.
Description
(1) technical field
The present invention relates to the processing method of bearing bush billet, be specially the processing method of Sn-based alloy bearing bush billet.
(2) background technique
At present, domestic lathe bearing shell adopts bimetallic material, and the axle bush material generally all is ZcuPb
30And ZCuPb
15Sn
8, individual part adopts ZcuSn
5Pb
5Zn
5And above-mentioned material quality is harder, and the bearing shell of making is in use easy to wear, also seize can occur sometimes, and the working life of corresponding axis is shorter.
(3) summary of the invention
At existing bearing shell, its material is harder, in use easy to wear, sometimes also seize can occur, the working life of axle is the shortcoming of weak point, the invention provides a kind of processing method of Sn-based alloy bearing bush billet, the blank that uses this method to make is made bearing shell, its quality is softer, and is sprayed with between the friction pair that the main shaft of pottery forms and has stronger wear resistance, and the working life of axle is longer.
Its technological scheme is such, it is characterized in that: it may further comprise the steps,
A, box hat surface degreasing
Place the aqueous solution of the NaOH of 20-30% to soak box hat, use the clear water outwash behind the outwash;
B, box hat are removed corrosion
To place the aqueous solution of 40-50%HCL to soak through the box hat of a step, take out back clear water outwash;
C, box hat oven dry
To place drying in oven through the box hat of b step, drying time 55-65 minute, bake out temperature 150-200 degree centigrade;
D, melting tin
With oven melting pure tin, smelting temperature is in 270350 degrees centigrade;
E, zinc-plated
With the box hat after the temperature in the baking oven immerse carry out in the good tin liquor of fusing zinc-plated;
F, centrifugal pressure casting
Pour into a mould after the zinc-plated box hat that finishes welded upper cover plate and base plate, the liquid metal of cast is ZSnSb4Cu4 or ZSnb2Cu4Ag3, and pouring temperature is 450-550 degree centigrade;
G, cooling
Centrifuge on the box hat that cast is good dallies earlier 8-12 second, water spray cooling then, and water spraying time is 30-50 second, hydraulic pressure is 5-6Mpa.
The blank that adopts technology of the present invention to make is made bearing shell, because ZSnSb4Cu4 layer or its quality of ZSnSb2Cu4Ag3 layer of inner surface of bearing bush are softer, and has stronger wear resistance between the friction pair that the main shaft that is sprayed with pottery forms, working life is longer, thereby has avoided existing bearing shell, and its axle bush material is generally ZcuPb30 and ZcuPb15Sn8, the material quality is harder, the bearing shell of making is in use easy to wear, also seize can occur sometimes, the shortcoming that the working life of axle is short.
(4) description of drawings
Fig. 1 is a process flow diagram of the present invention;
(5) embodiment
Below in conjunction with Fig. 1 manufacturing process of the present invention is described:
Embodiment 1, box hat placed the aqueous solution of 20% NaOH soak, and uses the clear water outwash behind the outwash, and then places the aqueous solution of 40%HCL to soak box hat, takes out back clear water outwash; Box hat places drying in oven again, drying time 55 minutes, 150 degrees centigrade of bake out temperatures; With oven melting pure tin, 270 degrees centigrade of smelting temperatures; With the box hat after the temperature in the baking oven immerse carry out in the good tin liquor of fusing zinc-plated; Pour into a mould after the zinc-plated box hat that finishes welded upper cover plate and base plate, the liquid metal of cast is ZSnSb4Cu4 or ZSnSb2Cu4Ag3, and pouring temperature is 450 degrees centigrade; Centrifuge on the box hat that cast is good, idle running earlier 8 seconds, water spray cooling then, water spraying time is 30 seconds, hydraulic pressure is 5Mpa.
Embodiment 2, box hat placed the aqueous solution of 25% NaOH soak, and use the clear water outwash behind the outwash, and then place the aqueous solution of 50%HCL to soak box hat, take out back clear water outwash; Box hat places drying in oven, drying time 60 minutes, 200 degrees centigrade of bake out temperatures; With oven melting pure tin, smelting temperature is at 310 degrees centigrade; To arrive box hat after the temperature immerse carry out in the good tin liquor of fusing zinc-plated; Pour into a mould after the zinc-plated box hat that finishes welded upper cover plate and base plate, the liquid metal of cast is ZSnSb4Cu4 or ZSnSb2Cu4Ag3, and pouring temperature is 500 degrees centigrade; Centrifuge on the box hat that cast is good, idle running earlier 10 seconds, water spray cooling then, water spraying time is 50 seconds, hydraulic pressure is 5.5Mpa.
Embodiment 3, box hat placed the aqueous solution of 30% NaOH soak, and use the clear water outwash behind the outwash, and then place the aqueous solution of 45%HCL to soak box hat, take out back clear water outwash; Box hat places drying in oven, drying time 65 minutes, 175 degrees centigrade of bake out temperatures; With oven melting pure tin, smelting temperature is at 350 degrees centigrade; To arrive box hat after the temperature immerse carry out in the good tin liquor of fusing zinc-plated; Pour into a mould after the zinc-plated box hat that finishes welded upper cover plate and base plate, the liquid metal of cast is ZSnSb4Cu4 or ZSnSb2Cu4Ag3, and pouring temperature is 550 degrees centigrade; Centrifuge on the box hat that cast is good, idle running earlier 12 seconds, water spray cooling then, water spraying time is 40 seconds, hydraulic pressure is 6Mpa.
Claims (1)
1, the processing method of Sn-based alloy bearing bush billet, it is characterized in that: it may further comprise the steps,
A, box hat surface degreasing
Place the aqueous solution of the NaOH of 20-30% to soak box hat, use the clear water outwash behind the outwash;
B, box hat are removed corrosion
To place the aqueous solution of 40-50%HCL to soak through the box hat of a step, take out back clear water outwash;
C, box hat oven dry
To place drying in oven through the box hat of b step, drying time 55-65 minute, bake out temperature 150-200 degree centigrade;
D, melting tin
With oven melting pure tin, smelting temperature is in 270-350 degree centigrade;
E, zinc-plated
With the box hat after the temperature in the baking oven immerse carry out in the good tin liquor of fusing zinc-plated;
F, centrifugal pressure casting
Pour into a mould after the zinc-plated box hat that finishes welded upper cover plate and base plate, the liquid metal of cast is ZSnSb4Cu4 or ZSnSb2Cu4Ag3, and pouring temperature is 450-550 degree centigrade;
G, cooling
Centrifuge on the box hat that cast is good dallies earlier 8-12 second, water spray cooling then, and water spraying time is 30-50 second, hydraulic pressure is 5-6Mpa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510040754 CN1884864A (en) | 2005-06-22 | 2005-06-22 | Sn-based alloy bearing bush billet machining method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510040754 CN1884864A (en) | 2005-06-22 | 2005-06-22 | Sn-based alloy bearing bush billet machining method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1884864A true CN1884864A (en) | 2006-12-27 |
Family
ID=37583149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510040754 Pending CN1884864A (en) | 2005-06-22 | 2005-06-22 | Sn-based alloy bearing bush billet machining method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1884864A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100540184C (en) * | 2007-10-25 | 2009-09-16 | 济南重工股份有限公司 | Alloy casting technology |
| CN107824767A (en) * | 2017-10-30 | 2018-03-23 | 太湖县爱杰机械铸造有限公司 | Babbit metal bearing casting process |
| CN109202044A (en) * | 2018-09-30 | 2019-01-15 | 东方电气集团东方汽轮机有限公司 | A kind of open casting method for centrifugal of large axle bush babbit |
-
2005
- 2005-06-22 CN CN 200510040754 patent/CN1884864A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100540184C (en) * | 2007-10-25 | 2009-09-16 | 济南重工股份有限公司 | Alloy casting technology |
| CN107824767A (en) * | 2017-10-30 | 2018-03-23 | 太湖县爱杰机械铸造有限公司 | Babbit metal bearing casting process |
| CN109202044A (en) * | 2018-09-30 | 2019-01-15 | 东方电气集团东方汽轮机有限公司 | A kind of open casting method for centrifugal of large axle bush babbit |
| CN109202044B (en) * | 2018-09-30 | 2020-12-22 | 东方电气集团东方汽轮机有限公司 | Open type centrifugal casting method for large bearing bush babbit alloy |
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