CN107598134A - A kind of preparation method of sliding bearing babbit layer - Google Patents
A kind of preparation method of sliding bearing babbit layer Download PDFInfo
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- CN107598134A CN107598134A CN201710680635.4A CN201710680635A CN107598134A CN 107598134 A CN107598134 A CN 107598134A CN 201710680635 A CN201710680635 A CN 201710680635A CN 107598134 A CN107598134 A CN 107598134A
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Abstract
The invention discloses a kind of preparation method of sliding bearing babbit layer, before tining is carried out to bearing blank, bearing blank is first preheating to 300 DEG C 500 DEG C, so tin liquor can be made preferably to penetrate into the matrix of bearing blank, improves the bond strength of babbit layer.In addition when babbit layer starts solidification and dendrite occurs, bearing blank is carried out using cooling water quick strong cold, can be refined the crystallite dimension near the binder course of babbit layer, binder course can become more fastening after refinement and the shrinkage cavity inside it can also greatly reduce, and can greatly promote the intensity and bond strength of babbit layer.
Description
Technical field
The invention belongs to bearing processing method technical field, and in particular to a kind of preparation side of sliding bearing babbit layer
Method.
Background technology
Babbit is used mainly as the antifriction layer of sliding bearing, and Hard Inclusion, soft base are uniform-distribution with its soft matrix
Body has preferably embedding Tibetan property, compliance and seizure resistance, and soft matrix meeting indent, Hard Inclusion evagination, can slided after break-in
Minim gap is formed between face, turns into store oil space and grease channel, is advantageous to antifriction, the Hard Inclusion of evagination can play Zhi Chengzuo
With beneficial to carrying.
The preparation of babbit antifriction layer at present is by the way that the babbit after fusing is cast on bearing blank come real
Existing, casting method has centrifugal casting and gravity casting method.The centrifugal force Pasteur that wherein spun casting passes through centrifuge
Alloy is uniformly adhered on matrix, and casting quality is good, bearing service life length.But either spun casting or gravity is poured
Casting, antifriction layer all be present and axle bush combines loosely and antifriction layer internal defect causes the not high defect of babbit layer intensity.
Chinese invention patent application, Publication No. CN103817413A, disclose " a kind of copper-based alloy bearing bush wearing layer
Preparation method ", the bond strength of the babbit layer prepared using this method is high, but the intensity of babbit layer oneself is not high,
And using this method when being prepared on other alloy substrates, its bond strength is with regard to not ideal.
Chinese invention patent application, Publication No. CN106435563A, disclose a kind of " bearing shell steel back spraying babbit
The method of layer ", the intensity and bond strength of the babbit layer prepared using this method are all poor.
As the raising to requirements such as bearing service life and frictional behaviours at present from preparation technology, it is necessary to solve Pasteur
The defects of alloy antifriction layer.
The content of the invention
It is an object of the invention to provide a kind of preparation method of sliding bearing babbit layer, solves babbit layer coating
The problem of low intensity, poor bonding strength be present on sliding bearing surface.
The technical solution adopted in the present invention is：A kind of preparation method of sliding bearing babbit layer, specifically according to
Lower step is implemented：
Step 1, hydrogenation treatment is carried out to bearing blank；
Step 2, deoxidation processing is carried out to the bearing blank obtained through step 1；
Step 3, the bearing blank obtained through step 2 is preheating to 300 DEG C -500 DEG C, then its surface is carried out at tining
Reason；
Step 4, the bearing blank obtained through step 3 is fitted into centrifugal casting machine, then using the babbit of melting
Spun casting is carried out to bearing blank；
Step 5, room temperature cooling is carried out to the bearing blank obtained through step 4, treats that babbit layer starts to solidify and occurred
During dendrite, first bearing blank is forced with cooling water to be cooled to 50 DEG C -200 DEG C, then cooled down by room temperature, finally given and be coated with
The sliding bearing of babbit layer.
The features of the present invention also resides in：
In the step 1, the hydrotreated temperature is 550 DEG C -650 DEG C, and the hydrotreated time is
20h-30h。
In the step 2, the deoxidation processing is implemented according to following steps：
Step 2.1, the sodium hydroxide solution that the dilute hydrochloric acid solution or concentration for being 15%-30% with concentration are 10% to 15%
5min-10min cleaning is carried out to the bearing blank obtained through step 1；
Step 2.2,5min cleaning is carried out to the bearing blank obtained through step 2.1 with clear water；
Step 2.3, the bearing blank obtained through step 2.2 is preheated to 270 DEG C -350 DEG C, then used according to 1:1 matches somebody with somebody
The ammonium chloride of system and the saturated solution of zinc chloride smear bearing blank surface.
In the step 4, the temperature of the babbit of the melting is 460 DEG C -520 DEG C.
In the step 5, the temperature of the cooling water is 20 DEG C -40 DEG C.
In the step 5, the corner of the centrifugal casting machine is 5 °, and the rotating speed of the centrifugal casting machine is 800r/
min-1200r/min。
The beneficial effects of the invention are as follows：(1) a kind of preparation method of sliding bearing babbit layer of the present invention, to bearing
Before blank carries out tining, bearing blank is first preheating to 300 DEG C -500 DEG C, can so tin liquor is preferably penetrated into bearing blank
Matrix in, improve the bond strength of babbit layer；(2) a kind of preparation method of sliding bearing babbit layer of the present invention,
When babbit layer starts solidification and dendrite occurs, bearing blank is carried out using cooling water quick strong cold, babbit layer can be made
Binder course near crystallite dimension refined, binder course can become after refinement more fastening and the shrinkage cavity inside it
It can greatly reduce, be advantageous to be lifted the intensity and bond strength of babbit layer.
Embodiment
With reference to embodiment, the present invention is described in detail.
A kind of preparation method of sliding bearing babbit layer of the present invention, specifically implements according to following steps：
Step 1, bearing blank is placed in hydrogen stove, and 20h-30h is incubated at 550 DEG C -600 DEG C；
Step 2, deoxidation processing is carried out to the bearing blank obtained through step 1, specifically implemented according to following steps：
Step 2.1, the sodium hydroxide solution that the dilute hydrochloric acid solution or concentration for being 15%-30% with concentration are 10%-15%
5min-10min cleaning is carried out to the bearing blank obtained through step 1；
Step 2.2,5min cleaning is carried out to the bearing blank obtained through step 2.1 with clear water；
Step 2.3, the bearing blank obtained through step 2.2 is preheated to 270 DEG C -350 DEG C, then used according to 1:1 matches somebody with somebody
The ammonium chloride of system and the saturated solution of zinc chloride smear the surface of bearing blank；
Step 3, the bearing blank obtained through step 2.3 is preheating to 300 DEG C -500 DEG C, tining is carried out to its surface afterwards
Processing；
Step 4, the bearing blank after the processing of step 3 tining is fitted into the centrifugal casting machine that corner is 5 °, uses 460
The babbits of DEG C of -520 DEG C meltings carry out spun casting, in spun casting, the rotating speed of centrifugal casting machine to the bearing blank
For 800r/min-1200r/min；
Step 5, room temperature cooling is carried out to the bearing blank obtained through step 4, treats that babbit layer starts to solidify and occurred
During dendrite, first bearing blank is forced with 20 DEG C -40 DEG C of cooling water to be cooled to 50 DEG C -200 DEG C, then cooled down by room temperature, most
The sliding bearing coated with babbit layer is obtained eventually.
In step 1, the hydrogen in bearing blank can prevent white point (shattered crack) defect that hydrogen is brought after removing.
In step 2, first bearing blank is carried out using hydrochloric acid or sodium hydroxide solution it is preliminary remove oxidation processes, afterwards
The saturated solution using ammonium chloride and zinc chloride carry out it is fine remove oxidation processes, be easy to tin liquor preferably to penetrate into axle
Hold in blank matrix, do not influenceed by bearing blank oxide on surface.
In step 3, before tining is carried out to bearing blank, bearing blank is first preheating to 300 DEG C -500 DEG C, can so be made
Tin liquor is preferably penetrated into the matrix of bearing blank, improves the bond strength of babbit layer.
In step 4, spun casting is carried out to the bearing blank after tining using centrifugal casting machine, it can be ensured that babbit liquid
Body can uniformly be coated in bearing blank surface, avoid babbit layer uneven the problem of causing poor bonding strength.
In step 5, when babbit layer starts to solidify and dendrite occurs, bearing blank is carried out using cooling water quick
It Qiang Leng, can be refined the crystallite dimension near the binder course of babbit layer, binder course can become more to step up after refinement
Gu and its internal shrinkage cavity can also greatly reduce, be advantageous to be lifted the intensity and bond strength of babbit layer.
The sliding bearing babbit layer being prepared by the preparation method of the present invention, its material Brinell hardness exist
Between 29.2HBW-31.2HBW, tensile strength between 76.5MP-97.1MP, compression strength between 79.9MP-84.5MP,
Coefficient of friction average value is between 0.06-0.12, and Volume erosion rate is in 0.0004mm3/min-0.00069mm3/min。
Embodiment 1
Step 1, bearing blank is placed in hydrogen stove, and 20h is incubated at 550 DEG C；
Step 2, deoxidation processing is carried out to the bearing blank obtained through step 1, specifically implemented according to following steps：
Step 2.1, the sodium hydroxide solution that the dilute hydrochloric acid solution or concentration for being 15% with concentration are 10% through step 1 to obtaining
The bearing blank arrived carries out 5min cleaning；
Step 2.2,5min cleaning is carried out to the bearing blank obtained through step 2.1 with clear water；
Step 2.3, the bearing blank obtained through step 2.2 is preheated to 270 DEG C, then used according to 1:1 chlorine prepared
Change the surface of the saturated solution smearing bearing blank of ammonium and zinc chloride；
Step 3, the bearing blank obtained through step 2.3 is preheating to 300 DEG C, tining processing is carried out to its surface afterwards；
Step 4, the bearing blank after the processing of step 3 tining is fitted into the centrifugal casting machine that corner is 5 °, uses 460
DEG C melting babbit to the bearing blank carry out spun casting, in spun casting, the rotating speed of centrifugal casting machine is 800r/
min；
Step 5, room temperature cooling is carried out to the bearing blank obtained through step 4, treats that babbit layer starts to solidify and occurred
During dendrite, first bearing blank is forced with 20 DEG C of cooling water to be cooled to 50 DEG C, then cooled down by room temperature, finally given and be coated with
The sliding bearing of babbit layer.
Embodiment 2
Step 1, bearing blank is placed in hydrogen stove, and 22h is incubated at 560 DEG C；
Step 2, deoxidation processing is carried out to the bearing blank obtained through step 1, specifically implemented according to following steps：
Step 2.1, the sodium hydroxide solution that the dilute hydrochloric acid solution or concentration for being 20% with concentration are 11% through step 1 to obtaining
The bearing blank arrived carries out 6min cleaning；
Step 2.2,5min cleaning is carried out to the bearing blank obtained through step 2.1 with clear water；
Step 2.3, the bearing blank obtained through step 2.2 is preheated to 290 DEG C, then used according to 1:1 chlorine prepared
Change the surface of the saturated solution smearing bearing blank of ammonium and zinc chloride；
Step 3, the bearing blank obtained through step 2.3 is preheating to 400 DEG C, tining processing is carried out to its surface afterwards；
Step 4, the bearing blank after the processing of step 3 tining is fitted into the centrifugal casting machine that corner is 5 °, then made
Spun casting is carried out to the bearing blank with the babbit of 480 DEG C of meltings, in spun casting, the rotating speed of centrifugal casting machine is
900r/min；
Step 5, room temperature cooling is carried out to the bearing blank obtained through step 4, treats that babbit layer starts to solidify and occurred
During dendrite, first bearing blank is forced with 25 DEG C of cooling water to be cooled to 100 DEG C, then cooled down by room temperature, finally give coating
There is the sliding bearing of babbit layer.
Embodiment 3
Step 1, bearing blank is placed in hydrogen stove, and 25h is incubated at 575 DEG C；
Step 2, deoxidation processing is carried out to the bearing blank obtained through step 1, specifically implemented according to following steps：
Step 2.1, the sodium hydroxide solution that the dilute hydrochloric acid solution or concentration for being 22% with concentration are 12% through step 1 to obtaining
The bearing blank arrived carries out 7min cleaning；
Step 2.2,5min cleaning is carried out to the bearing blank obtained through step 2.1 with clear water；
Step 2.3, the bearing blank obtained through step 2.2 is preheated to 310 DEG C, then used according to 1:1 chlorine prepared
Change the surface of the saturated solution smearing bearing blank of ammonium and zinc chloride；
Step 3, the bearing blank obtained through step 2.3 is preheating to 400 DEG C, tining processing is carried out to its surface afterwards；
Step 4, the bearing blank after the processing of step 3 tining is fitted into the centrifugal casting machine that corner is 5 °, then made
Spun casting is carried out to the bearing blank with the babbit of 490 DEG C of meltings, in spun casting, the rotating speed of centrifugal casting machine is
1000r/min；
Step 5, room temperature cooling is carried out to the bearing blank obtained through step 4, treats that babbit layer starts to solidify and occurred
During dendrite, first bearing blank is forced with 30 DEG C of cooling water to be cooled to 125 DEG C, then cooled down by room temperature, finally give coating
There is the sliding bearing of babbit layer.
Embodiment 4
Step 1, bearing blank is placed in hydrogen stove, and 24h is incubated at 600 DEG C；
Step 2, deoxidation processing is carried out to the bearing blank obtained through step 1, specifically implemented according to following steps：
Step 2.1, the sodium hydroxide solution that the dilute hydrochloric acid solution or concentration for being 20% with concentration are 15% through step 1 to obtaining
The bearing blank arrived carries out 5min cleaning；
Step 2.2,5min cleaning is carried out to the bearing blank obtained through step 2.1 with clear water；
Step 2.3, the bearing blank obtained through step 2.2 is preheated to 300 DEG C, then used according to 1:1 chlorine prepared
Change the surface of the saturated solution smearing bearing blank of ammonium and zinc chloride；
Step 3, the bearing blank obtained through step 2.3 is preheating to 500 DEG C, tining processing is carried out to its surface afterwards；
Step 4, the bearing blank after the processing of step 3 tining is fitted into the centrifugal casting machine that corner is 5 °, then made
Spun casting is carried out to bearing blank with the babbit of 500 DEG C of meltings, in spun casting, the rotating speed of centrifugal casting machine is
1100r/min；
Step 5, room temperature cooling is carried out to the bearing blank obtained through step 4, treats that babbit layer starts to solidify and occurred
During dendrite, first bearing blank is forced with 20 DEG C of cooling water to be cooled to 100 DEG C, then cooled down by room temperature, finally give coating
There is the sliding bearing of babbit layer.
The sliding bearing babbit layer being prepared by the preparation method of embodiment 4, its material Brinell hardness can reach
29.2HBW, tensile strength can reach 97.1MP, and compression strength can reach 84.5MP, and coefficient of friction average value is 0.06, volume mill
Loss rate is 0.00069mm3/min。
Embodiment 5
Step 1, bearing blank is placed in hydrogen stove, and 30h is incubated at 600 DEG C；
Step 2, deoxidation processing is carried out to the bearing blank obtained through step 1, specifically implemented according to following steps：
Step 2.1, the sodium hydroxide solution that the dilute hydrochloric acid solution or concentration for being 30% with concentration are 15% through step 1 to obtaining
The bearing blank arrived carries out 10min cleaning；
Step 2.2,5min cleaning is carried out to the bearing blank obtained through step 2.1 with clear water；
Step 2.3, the bearing blank obtained through step 2.2 is preheated to 350 DEG C, then used according to 1:1 chlorine prepared
Change the surface of the saturated solution smearing bearing blank of ammonium and zinc chloride；
Step 3, the bearing blank obtained through step 2.3 is preheating to 500 DEG C, tining processing is carried out to its surface afterwards；
Step 4, the bearing blank after the processing of step 3 tining is fitted into the centrifugal casting machine that corner is 5 °, then made
Spun casting is carried out to the bearing blank with the babbit of 520 DEG C of meltings, in spun casting, the rotating speed of centrifugal casting machine is
1200r/min；
Step 5, room temperature cooling is carried out to the bearing blank obtained through step 4, treats that babbit layer starts to solidify and occurred
During dendrite, first bearing blank is forced with 40 DEG C of cooling water to be cooled to 200 DEG C, then cooled down by room temperature, finally give coating
There is the sliding bearing of babbit layer.
Claims (6)
1. a kind of preparation method of sliding bearing babbit layer, it is characterised in that specifically implement according to following steps：
Step 1, hydrogenation treatment is carried out to bearing blank；
Step 2, deoxidation processing is carried out to the bearing blank obtained through step 1；
Step 3, the bearing blank obtained through step 2 is preheating to 300 DEG C -500 DEG C, tining processing then is carried out to its surface；
Step 4, the bearing blank obtained through step 3 is fitted into centrifugal casting machine, then using the babbit of melting to axle
Hold blank and carry out spun casting；
Step 5, room temperature cooling is carried out to the bearing blank obtained through step 4, treats that babbit layer starts to solidify and occur dendrite
When, first bearing blank is forced with cooling water to be cooled to 50 DEG C -200 DEG C, is then finally given and is coated with by room temperature cooling again
The sliding bearing of babbit layer.
2. the preparation method of sliding bearing babbit layer according to claim 1, it is characterised in that in the step 1
In, the hydrotreated temperature is 550 DEG C -650 DEG C, and the hydrotreated time is 20h-30h.
3. the preparation method of sliding bearing babbit layer according to claim 1, it is characterised in that in the step 2
In, the deoxidation processing is implemented according to following steps：
Step 2.1, the sodium hydroxide solution that the dilute hydrochloric acid solution or concentration for being 15%-30% with concentration are 10% to 15% is to warp
The bearing blank that step 1 obtains carries out 5min-10min cleaning；
Step 2.2,5min cleaning is carried out to the bearing blank obtained through step 2.1 with clear water；
Step 2.3, the bearing blank obtained through step 2.2 is preheated to 270 DEG C -350 DEG C, then used according to 1:1 preparation
The saturated solution of ammonium chloride and zinc chloride smears the surface of bearing blank.
4. the preparation method of sliding bearing babbit layer according to claim 1, it is characterised in that in the step 4
In, the temperature of the babbit of the melting is 460 DEG C -520 DEG C.
5. the preparation method of sliding bearing babbit layer according to claim 1, it is characterised in that in the step 5
In, the temperature of the cooling water is 20 DEG C -40 DEG C.
6. the preparation method of sliding bearing babbit layer according to claim 1, it is characterised in that in the step 5,
The corner of the centrifugal casting machine is 5 °, and the rotating speed of the centrifugal casting machine is 800r/min-1200r/min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710680635.4A CN107598134A (en) | 2017-08-10 | 2017-08-10 | A kind of preparation method of sliding bearing babbit layer |
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| CN201710680635.4A CN107598134A (en) | 2017-08-10 | 2017-08-10 | A kind of preparation method of sliding bearing babbit layer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108977815A (en) * | 2018-07-25 | 2018-12-11 | 红河学院 | A kind of surface oxidation treatment method of kamash alloy |
| CN109759566A (en) * | 2019-03-22 | 2019-05-17 | 上海电气集团上海电机厂有限公司 | A method of casting thrust bearing shoe valve bearing metal |
| CN117570114A (en) * | 2024-01-15 | 2024-02-20 | 中国机械总院集团宁波智能机床研究院有限公司 | Forming method and device of Babbitt metal bearing and Babbitt metal bearing |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU378285A1 (en) * | 1969-09-29 | 1973-04-18 | CENTRIFUGAL INSTALLATION FOR CASTING BIMETALLIC SLEEVES | |
| DE4339394C1 (en) * | 1993-11-18 | 1994-10-13 | Fuerstlich Hohenzollernsche We | Method for manufacturing a sleeve bearing, and sleeve bearing |
| CN103866225A (en) * | 2014-03-07 | 2014-06-18 | 苏州捷德瑞精密机械有限公司 | Centrifugal casting method of bearing bushes |
| CN104690251A (en) * | 2013-12-09 | 2015-06-10 | 青岛平度市旧店金矿 | Compound process for bimetallic bearing provided with bearing bush |
-
2017
- 2017-08-10 CN CN201710680635.4A patent/CN107598134A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU378285A1 (en) * | 1969-09-29 | 1973-04-18 | CENTRIFUGAL INSTALLATION FOR CASTING BIMETALLIC SLEEVES | |
| DE4339394C1 (en) * | 1993-11-18 | 1994-10-13 | Fuerstlich Hohenzollernsche We | Method for manufacturing a sleeve bearing, and sleeve bearing |
| CN104690251A (en) * | 2013-12-09 | 2015-06-10 | 青岛平度市旧店金矿 | Compound process for bimetallic bearing provided with bearing bush |
| CN103866225A (en) * | 2014-03-07 | 2014-06-18 | 苏州捷德瑞精密机械有限公司 | Centrifugal casting method of bearing bushes |
Non-Patent Citations (2)
| Title |
|---|
| 夏渭江等: "动压轴承巴氏合金层浇注工艺的研究", 《科技资讯》 * |
| 闫庆斌等: "《铸造合金熔炼及控制》", 31 March 2011, 中南大学出版社 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108977815A (en) * | 2018-07-25 | 2018-12-11 | 红河学院 | A kind of surface oxidation treatment method of kamash alloy |
| CN108977815B (en) * | 2018-07-25 | 2019-10-18 | 红河学院 | A kind of minimizing technology of kamash alloy oxide on surface |
| CN109759566A (en) * | 2019-03-22 | 2019-05-17 | 上海电气集团上海电机厂有限公司 | A method of casting thrust bearing shoe valve bearing metal |
| CN117570114A (en) * | 2024-01-15 | 2024-02-20 | 中国机械总院集团宁波智能机床研究院有限公司 | Forming method and device of Babbitt metal bearing and Babbitt metal bearing |
| CN117570114B (en) * | 2024-01-15 | 2024-05-03 | 中国机械总院集团宁波智能机床研究院有限公司 | Forming method and device of Babbitt metal bearing and Babbitt metal bearing |
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Application publication date: 20180119 |