CN104832541B - A kind of processing technology of bearing insert - Google Patents
A kind of processing technology of bearing insert Download PDFInfo
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- CN104832541B CN104832541B CN201510166347.8A CN201510166347A CN104832541B CN 104832541 B CN104832541 B CN 104832541B CN 201510166347 A CN201510166347 A CN 201510166347A CN 104832541 B CN104832541 B CN 104832541B
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Abstract
The present invention discloses a kind of processing technology of bearing insert, comprises the following steps：A, sorting；B, forging；C, Vehicle Processing；D, quenching；E, washing；F, tempering；G, cooling；H, freezing；I, mill processing.The present invention is the techniques such as raw material, forged, Vehicle Processing, quenching, washing, tempering, cooling, freezing, mill processing by using the bearing steel of high-hardenability, the bush inside tissue for making is more stable, internal retained austenite can be controlled below 1%, improve wearability, after measured, can continuously be worked at a temperature of 175 DEG C 24000h by the bushing of above-mentioned technique productions, substantially prolongs its service life.
Description
Technical field
The present invention relates to a kind of processing technology of bushing, more particularly to a kind of processing technology of bearing insert.
Background technology
Bearing insert is a kind of important spare part in contemporary plant equipment.At present, in the market is produced using common process
Bearing insert, after its quenched operation, interior tissue still remains more austenite, is not sufficiently stable, and largely effects on axle
The performance of bushing is held, its hardness, wearability are all relatively poor, cause its service life shorter, safeguarded into so as to considerably increase
This.
The content of the invention
It is an object of the invention to provide a kind of processing technology of bearing insert, it has, and hardness is high, wearability is good, uses
The characteristics of long lifespan.
The purpose of the present invention is to be achieved through the following technical solutions：
A kind of processing technology of bearing insert, comprises the following steps：
A, sorting：The bearing steel for choosing high-hardenability is raw material；
B, forging：Blank is forged according to size；
C, Vehicle Processing：Blank is machined to the size of design；
D, quenching：Workpiece after Vehicle Processing is preheated into 15~45min in 630~670 DEG C, 830~870 DEG C are then heated to
30~60min of insulation, then workpiece is placed in quenching oil quenching, the temperature of quenching oil is 70~80 DEG C；
E, washing：Workpiece after quenching is cleaned；
F, tempering：Workpiece after washing is tempered 160~200min in 230~250 DEG C；
G, cooling：Workpiece after tempering is cooled down under normal temperature, workpiece is cooled to room temperature；
H, freezing：Workpiece after cooling is freezed into 1.5h~2h in -75 DEG C~-85 DEG C；
I, mill processing：Required precision is machined to the workpiece mill after freezing.
As preferred scheme of the invention, selected bearing steel in the step a, chemical composition content is：Carbon content
0.9%；Silicone content 0.25%；Manganese content 0.45%；Phosphorus content 0.03%；Sulfur content 0.025%；Chromium content 1.15%.
As preferred scheme of the invention, the workpiece after Vehicle Processing is preheated into 30min in 650 DEG C in the step d, then
850 DEG C of insulation 45min are warming up to, then workpiece is placed in quenching oil quenching, the temperature of quenching oil is 75 DEG C.
As preferred scheme of the invention, the workpiece after quenching is cleaned using alkaline cleaner in the step e.
As preferred scheme of the invention, the workpiece after washing is tempered 180min in 240 DEG C in the step f.
As preferred scheme of the invention, the workpiece after cooling is freezed into 1.7h in -82 DEG C in the step h.
Beneficial effects of the present invention are：A kind of processing technology of bearing insert uses the bearing steel of high-hardenability for former
The techniques such as material, forged, Vehicle Processing, quenching, washing, tempering, cooling, freezing, mill processing, the bush inside tissue for making is more steady
It is fixed, internal retained austenite can be controlled below 1%, wearability is improve, after measured, by the lining of above-mentioned technique productions
Can continuously work 24000h at a temperature of being enclosed within 175 DEG C, substantially prolongs its service life.
Brief description of the drawings
Fig. 1 is a kind of process chart of the processing technology of bearing insert of the invention.
Specific embodiment
Further illustrate technical scheme below in conjunction with the accompanying drawings and by specific embodiment.
Refer to shown in Fig. 1, Fig. 1 is a kind of process chart of the processing technology of bearing insert of the invention, and under combination
The invention will be further described for the specific embodiment in face.
Embodiment 1
In the present embodiment, a kind of processing technology of bearing insert is comprised the following steps：
A, sorting：The bearing steel for choosing high-hardenability is raw material, and the bearing steel chemical composition content is carbon content
0.9%；Silicone content 0.25%；Manganese content 0.45%；Phosphorus content 0.03%；Sulfur content 0.025%；Chromium content 1.15%；
B, forging：Blank is forged according to size；
C, Vehicle Processing：Blank is machined to the size of design；
D, quenching：Workpiece after Vehicle Processing is preheated into 45min in 630 DEG C, 830 DEG C of insulation 60min are then heated to, then will
Workpiece is placed in quenching oil quenching, and the temperature of quenching oil is 70 DEG C；
E, washing：The workpiece after quenching is cleaned using alkaline cleaner；
F, tempering：Workpiece after washing is tempered 200min in 230 DEG C；
G, cooling：Workpiece after tempering is cooled down under normal temperature, workpiece is cooled to room temperature；
H, freezing：Workpiece after cooling is freezed into 1.5h in -85 DEG C；
I, mill processing：Required precision is machined to the workpiece mill after freezing.
Using the product of above-mentioned technique productions, its retained austenite can reach 0.9%, substantially increase workpiece hardness,
Wearability, extends its service life.
Embodiment 2
In the present embodiment, a kind of processing technology of bearing insert is comprised the following steps：
A, sorting：The bearing steel for choosing high-hardenability is raw material, and the bearing steel chemical composition content is carbon content
0.9%；Silicone content 0.25%；Manganese content 0.45%；Phosphorus content 0.03%；Sulfur content 0.025%；Chromium content 1.15%；
B, forging：Blank is forged according to size；
C, Vehicle Processing：Blank is machined to the size of design；
D, quenching：Workpiece after Vehicle Processing is preheated into 15min in 670 DEG C, 870 DEG C of insulation 30min are then heated to, then will
Workpiece is placed in quenching oil quenching, and the temperature of quenching oil is 80 DEG C；
E, washing：The workpiece after quenching is cleaned using alkaline cleaner；
F, tempering：Workpiece after washing is tempered 160min in 250 DEG C；
G, cooling：Workpiece after tempering is cooled down under normal temperature, workpiece is cooled to room temperature；
H, freezing：Workpiece after cooling is freezed into 2h in -75 DEG C；
I, mill processing：Required precision is machined to the workpiece mill after freezing.
Using the product of above-mentioned technique productions, its retained austenite can reach 0.9%, substantially increase workpiece hardness,
Wearability, extends its service life.
Embodiment 3
In the present embodiment, a kind of processing technology of bearing insert is comprised the following steps：
A, sorting：The bearing steel for choosing high-hardenability is raw material, and the bearing steel chemical composition content is carbon content
0.9%；Silicone content 0.25%；Manganese content 0.45%；Phosphorus content 0.03%；Sulfur content 0.025%；Chromium content 1.15%；
B, forging：Blank is forged according to size；
C, Vehicle Processing：Blank is machined to the size of design；
D, quenching：Workpiece after Vehicle Processing is preheated into 30min in 650 DEG C, 850 DEG C of insulation 45min are then heated to, then will
Workpiece is placed in quenching oil quenching, and the temperature of quenching oil is 75 DEG C；
E, washing：The workpiece after quenching is cleaned using alkaline cleaner；
F, tempering：Workpiece after washing is tempered 180min in 240 DEG C；
G, cooling：Workpiece after tempering is cooled down under normal temperature, workpiece is cooled to room temperature；
H, freezing：Workpiece after cooling is freezed into 1.7h in -82 DEG C；
I, mill processing：Required precision is machined to the workpiece mill after freezing.
As preferred scheme of the invention, the workpiece after Vehicle Processing is preheated into 30min in 650 DEG C in the step d, then
850 DEG C of insulation 45min are warming up to, then workpiece is placed in quenching oil quenching, the temperature of quenching oil is 75 DEG C.
Using the product of above-mentioned technique productions, its retained austenite can reach 0.8%, substantially increase workpiece hardness,
Wearability, extends its service life.
Above example is to elaborate general principle of the invention and characteristic, and the present invention is not limited by above-described embodiment,
Without departing from the spirit and scope of the present invention, the present invention also has various change and change, and these changes and modifications all fall
Enter in scope of the claimed invention.The claimed scope of the invention is by appending claims and its equivalent thereof.
Claims (6)
1. a kind of processing technology of bearing insert, it is characterised in that：Comprise the following steps：
A, sorting：The bearing steel for choosing high-hardenability is raw material；
B, forging：Blank is forged according to size；
C, Vehicle Processing：Blank is machined to the size of design；
D, quenching：Workpiece after Vehicle Processing is preheated into 15~45min in 630~670 DEG C, 830~870 DEG C of insulations are then heated to
30~60min, then workpiece is placed in quenching oil quenching, the temperature of quenching oil is 70~80 DEG C；
E, washing：Workpiece after quenching is cleaned；
F, tempering：Workpiece after washing is tempered 160~200min in 230~250 DEG C；
G, cooling：Workpiece after tempering is cooled down under normal temperature, workpiece is cooled to room temperature；
H, freezing：Workpiece after cooling is freezed into 1.5h~2h in -75 DEG C~-85 DEG C；
I, mill processing：Required precision is machined to the workpiece mill after freezing.
2. the processing technology of a kind of bearing insert according to claim 1, it is characterised in that：It is selected in the step a
Bearing steel, chemical composition content is：Carbon content 0.9%；Silicone content 0.25%；Manganese content 0.45%；Phosphorus content 0.03%；Sulphur contains
Amount 0.025%；Chromium content 1.15%.
3. the processing technology of a kind of bearing insert according to claim 1, it is characterised in that：Car is added in the step d
Workpiece after work preheats 30min in 650 DEG C, then heats to 850 DEG C of insulation 45min, then workpiece is placed in into quenching oil quenching,
The temperature of quenching oil is 75 DEG C.
4. the processing technology of a kind of bearing insert according to claim 1, it is characterised in that：Alkali is used in the step e
Property cleaning agent is cleaned to the workpiece after quenching.
5. the processing technology of a kind of bearing insert according to claim 1, it is characterised in that：Will washing in the step f
Workpiece afterwards is tempered 180min in 240 DEG C.
6. the processing technology of a kind of bearing insert according to claim 1, it is characterised in that：Will cooling in the step h
Workpiece afterwards freezes 1.7h in -82 DEG C.
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| CN201510166347.8A CN104832541B (en) | 2015-04-09 | 2015-04-09 | A kind of processing technology of bearing insert |
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| CN201510166347.8A CN104832541B (en) | 2015-04-09 | 2015-04-09 | A kind of processing technology of bearing insert |
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| CN104832541B true CN104832541B (en) | 2017-06-16 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105134783B (en) * | 2015-09-10 | 2017-09-19 | 安庆银泰轴承有限公司 | A kind of processing technology of air-conditioning bearing inner sleeve |
| CN110026747A (en) * | 2019-05-24 | 2019-07-19 | 无锡亿锞精密机械有限公司 | The nonstandard bush processing technology of high precision |
| CN110405423B (en) * | 2019-08-07 | 2022-03-08 | 包头市威丰稀土电磁材料股份有限公司 | Method for machining bevel gear sleeve of lower gear roller type mechanical scoring machine |
| CN114310494B (en) * | 2021-12-22 | 2023-12-08 | 中国科学院金属研究所 | Steel bearing ring and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103555923A (en) * | 2013-11-01 | 2014-02-05 | 瓦房店凯威精工轴承制造有限公司 | Precision bearing cold and heat treatment technological method |
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| JP2006124780A (en) * | 2004-10-29 | 2006-05-18 | Jtekt Corp | Rolling and sliding part and manufacturing method therefor |
| KR101271899B1 (en) * | 2010-08-06 | 2013-06-05 | 주식회사 포스코 | High carbon and chromium bearing steel and method for manufacturing the same |
| CN102840240B (en) * | 2012-09-11 | 2015-04-08 | 潍坊市宇宏石油机械有限公司 | Hard alloy radial bearing body and production process thereof |
| CN102925658A (en) * | 2012-11-06 | 2013-02-13 | 武汉理工大学 | Tissue and accuracy stabilized treatment method for high-carbon chromium steel bearing assembly |
| CN104084801A (en) * | 2014-07-15 | 2014-10-08 | 安庆银泰轴承有限公司 | Bearing manufacturing process |
| CN104388661A (en) * | 2014-11-06 | 2015-03-04 | 无锡市百顺机械厂 | Shaft sleeve heat treatment process |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103555923A (en) * | 2013-11-01 | 2014-02-05 | 瓦房店凯威精工轴承制造有限公司 | Precision bearing cold and heat treatment technological method |
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