CN104942192B - The processing technology of dredge pump axle bearing set - Google Patents
The processing technology of dredge pump axle bearing set Download PDFInfo
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- CN104942192B CN104942192B CN201410119118.6A CN201410119118A CN104942192B CN 104942192 B CN104942192 B CN 104942192B CN 201410119118 A CN201410119118 A CN 201410119118A CN 104942192 B CN104942192 B CN 104942192B
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- housing
- cover
- bearing holder
- forging
- processing technology
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- 238000005516 engineering process Methods 0.000 title claims abstract description 22
- 238000005242 forging Methods 0.000 claims abstract description 36
- 238000000034 method Methods 0.000 claims abstract description 25
- 239000011265 semifinished product Substances 0.000 claims abstract description 15
- 238000010438 heat treatment Methods 0.000 claims abstract description 12
- 238000005496 tempering Methods 0.000 claims abstract description 12
- 238000005266 casting Methods 0.000 claims abstract description 10
- 238000003754 machining Methods 0.000 claims abstract description 9
- 238000010791 quenching Methods 0.000 claims abstract description 6
- 230000000171 quenching effect Effects 0.000 claims abstract description 6
- 239000010425 asbestos Substances 0.000 claims abstract description 4
- 238000001816 cooling Methods 0.000 claims abstract description 4
- 229910052895 riebeckite Inorganic materials 0.000 claims abstract description 4
- 238000007493 shaping process Methods 0.000 claims description 5
- 238000009413 insulation Methods 0.000 abstract 1
- 229910001105 martensitic stainless steel Inorganic materials 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
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- Rolling Contact Bearings (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
The present invention proposes a kind of processing technology of dredge pump axle bearing set, and forging process, forging postcooling process and machining semi-finished product heat treatment step, each operation that the processing technology is mainly reflected in bearing holder (housing, cover) are described below：The initial forging temperature control of the 4Cr13 of bearing holder (housing, cover) is made at 1,100 1150 DEG C, at 880 DEG C, the charging temperature of blank is less than 400 DEG C, is slowly heated, is rapidly heated afterwards to initial forging temperature before reaching 850 DEG C for final forging temperature control；Bearing holder (housing, cover) casting is put into 200 DEG C or so of stove or is cooled down in asbestos incubator, or is put into insulation and furnace cooling in 600 DEG C of stoves；Bearing holder (housing, cover) casting is put into glowing furnace and is heated to 1,000 1050 DEG C, when preheating temperature reaches 400 DEG C, it is brought rapidly up after being to slowly warm up to 850 DEG C to hardening heat, quenching, which finishes that semi-finished product bearing holder (housing, cover) is put into tempering furnace again, heats, and temperature is controlled at 200 250 DEG C.Bearing holder (housing, cover) made from the machining process of the present invention has high intensity and wearability, strengthens its service life.
Description
Technical field
The present invention relates to the processing technology of bearing holder (housing, cover), particularly relates to a kind of processing technology of dredge pump axle bearing set.
Background technology
Dredge pump axle bearing covers generally use martensitic stain less steel 4Cr13, and the composition of its component by weight percentage is：0.3-
0.45% C ,≤0.6% Si ,≤0.8% Mn ,≤0.035% P, the Cr of≤0.030% S, 12-14%.This kind of bearing holder (housing, cover)
It is made by five big steps such as blanking, forcing press casting, surface hardening, tempering and grinding-shapings, the axis that this method produces
Bearing sleeve in actual use, if workpiece surface during the sensing because in long or follow-up lapping process of local sensitive time
Surface fine grinding is not in place, and wearing and can not using can occur in a short time in bearing holder (housing, cover) after surface fracture when causing to use.
The content of the invention
The present invention proposes a kind of processing technology of dredge pump axle bearing set, solves the problems, such as that bearing holder (housing, cover) is easy to wear and waits.
The technical proposal of the invention is realized in this way：
A kind of processing technology of dredge pump axle bearing set, the processing technology are mainly reflected in the forging process of bearing holder (housing, cover), forging
Make postcooling process and machining semi-finished product heat treatment step, each operation are described below：
The initial forging temperature control of the 4Cr13 of bearing holder (housing, cover) is made at 1100-1150 DEG C, final forging temperature control is at 880 DEG C, blank
Charging temperature be less than 400 DEG C, reach 850 DEG C before be slowly heated, be brought rapidly up initial forging temperature afterwards；
Bearing holder (housing, cover) casting is put into 200 DEG C or so of stove or is cooled down in asbestos incubator, or is put into 600 DEG C of stoves and protects
Temperature and furnace cooling；
Bearing holder (housing, cover) casting is put into glowing furnace and is heated to 1000-1050 DEG C, when preheating temperature reaches 400 DEG C, is slowly added
It is brought rapidly up after hot to 850 DEG C to hardening heat, quenching, which finishes that semi-finished product bearing holder (housing, cover) is put into tempering furnace again, heats, tempering temperature
Degree control is at 200-250 DEG C.
Preferred solution is, in the forging process and machining semi-finished product heat treatment step of bearing holder (housing, cover), the slow heating
More than when time is 3 small.
Preferred solution is, described to be brought rapidly up in the forging process and machining semi-finished product heat treatment step of bearing holder (housing, cover)
Time is within half an hour.
Preferred solution is, in the tempering process, the bearing holder (housing, cover) case hardness after tempering is in HRC50-53.
Preferred solution is, in the forging process of the bearing holder (housing, cover), its forging ratio is 2-3.
Preferred solution is, in the forging process of the bearing holder (housing, cover), finish-forging deflection is 12-20%.
Preferred solution is that the processing technology of the bearing holder (housing, cover) further includes grinding-shaping technique, the water channel table of the bearing holder (housing, cover)
Face finish is 1.6 μm.
Preferred solution is that the water channel depth of the bearing holder (housing, cover) is 1mm.
Beneficial effects of the present invention are：
Bearing holder (housing, cover) made from the machining process of centre bearer bush of the present invention may achieve the Proper Match of its intensity and toughness,
With high intensity and wearability, strengthen its service life.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the flow chart of bearing holder (housing, cover) processing technology of the present invention.
Embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment, belongs to the scope of protection of the invention.
Dredge pump axle bearing set is made of martensitic stain less steel 4Cr13, its total processing technology includes：Blanking, forcing press
Casting, five big step of surface hardening, tempering and grinding-shaping.These steps have been known to those skilled in the art, but respectively
The control of process will be different, and the present invention illustrates the difference of its processing technology so that wall thickness is 20mm bearing holder (housing, cover)s as an example, such as Fig. 1 institutes
Show, be mainly reflected in bearing holder (housing, cover) forging process, forging after quenching process and machining semi-finished product heat treatment step, each work
Sequence is described below：
First, the forging process of bearing holder (housing, cover)
The initial forging temperature of martensitic stain less steel 4Cr13 is controlled at 1100-1150 DEG C, which should not be too high, temperature
Delta ferrite occurs in excessive tissue, declines the plasticity of steel, and easily cracked in two-phase interface.During actual production, blank
Charging temperature should be less than 400 DEG C, and reach 850 DEG C before should be slowly heated 3 it is small when more than, can just be heated rapidly to afterwards beginning forging
Temperature.At 880 DEG C, the final forging temperature is unsuitable too low for the final forging temperature control of martensitic stain less steel 4Cr13, if temperature is too low,
The plasticity decline of steel is larger, is also easy to produce forge crack.When it is implemented, its final forging temperature is different because of its phosphorus content.The forging ratio
For 2-3, finish-forging deflection should be 12-20%.
2nd, postcooling process is forged
Bearing holder (housing, cover) casting is put into 200 DEG C or so of stove or is cooled down in asbestos incubator, or is put into 600 DEG C of stoves and protects
Temperature and furnace cooling.
3rd, semi-finished product heat treatment step is machined
Bearing holder (housing, cover) casting is put into glowing furnace and is heated to 1000-1050 DEG C, which cannot be too fast, it is necessary first to
By grace time, when preheating temperature reaches 400 DEG C, be to slowly warm up to 850 DEG C, i.e., substantially 3 it is small when more than, after be brought rapidly up to
Hardening heat, is brought rapidly up time control within half an hour.In the present embodiment, quenched using oil quenching mode.
Quenching, which finishes that semi-finished product bearing holder (housing, cover) is put into tempering furnace again, heats, and temperature is controlled at 200-250 DEG C, tempering
After come out of the stove and be air-cooled to room temperature.Bearing holder (housing, cover) case hardness after tempering is in HRC50-53.
4th, grinding-shaping technique
Due to needing to install three water seals outside the bearing holder (housing, cover) of dredge pump axis, its surface quality is directly related to the use of water,
The water channel depth of bearing holder (housing, cover) is 1mm, and in order to ensure that water seal is not broken, water channel side will polish smooth no corner angle, its any surface finish
Spend for 1.6 μm.
Bearing holder (housing, cover) made from above-mentioned technical process may achieve the Proper Match of its intensity and toughness, have high intensity and wear-resisting
Property, strengthen its service life.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on, should all be included in the protection scope of the present invention god.
Claims (6)
- A kind of 1. processing technology of dredge pump axle bearing set, it is characterised in that：The processing technology mainly includes the forging of bearing holder (housing, cover) Process, forging postcooling process and machining semi-finished product heat treatment step, each operation are described below：First, the forging process of bearing holder (housing, cover)The initial forging temperature control of the 4Cr13 of bearing holder (housing, cover) is made at 1100-1150 DEG C, final forging temperature is controlled at 880 DEG C, and blank enters Furnace temperature is less than 400 DEG C, is slowly heated before reaching 850 DEG C, is brought rapidly up initial forging temperature afterwards, its forging ratio is 2-3, eventually Forging deflection is 12-20%；2nd, postcooling process is forgedBearing holder (housing, cover) casting is put into 200 DEG C or so of stove or is cooled down in asbestos incubator, or is put into 600 DEG C of stoves and keeps the temperature simultaneously Furnace cooling；3rd, semi-finished product heat treatment step is machinedBearing holder (housing, cover) casting is put into glowing furnace and is heated to 1000-1050 DEG C, when preheating temperature reaches 400 DEG C, is slowly heated to It is brought rapidly up after 850 DEG C to hardening heat, quenching, which finishes that semi-finished product bearing holder (housing, cover) is put into tempering furnace again, heats, temperature control System is at 200-250 DEG C.
- 2. the processing technology of dredge pump axle bearing set as claimed in claim 1, it is characterised in that：Bearing holder (housing, cover) forging process and Machine semi-finished product heat treatment step in, it is described slow heating the time for 3 it is small when more than.
- 3. the processing technology of dredge pump axle bearing set as claimed in claim 1, it is characterised in that：Bearing holder (housing, cover) forging process and Machine in semi-finished product heat treatment step, it is described to be brought rapidly up the time as within half an hour.
- 4. the processing technology of dredge pump axle bearing set as claimed in claim 1, it is characterised in that：At the machining semi-finished product heat In science and engineering sequence, the bearing holder (housing, cover) case hardness after tempering is in HRC50-53.
- 5. the processing technology of dredge pump axle bearing set as claimed in claim 1, it is characterised in that：Grinding-shaping process is further included, The water channel surface smoothness of the bearing holder (housing, cover) is 1.6 μm.
- 6. the processing technology of dredge pump axle bearing set as claimed in claim 1, it is characterised in that：The water channel depth of the bearing holder (housing, cover) For 1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410119118.6A CN104942192B (en) | 2014-03-27 | 2014-03-27 | The processing technology of dredge pump axle bearing set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410119118.6A CN104942192B (en) | 2014-03-27 | 2014-03-27 | The processing technology of dredge pump axle bearing set |
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| Publication Number | Publication Date |
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| CN104942192A CN104942192A (en) | 2015-09-30 |
| CN104942192B true CN104942192B (en) | 2018-04-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410119118.6A Active CN104942192B (en) | 2014-03-27 | 2014-03-27 | The processing technology of dredge pump axle bearing set |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105215241B (en) * | 2015-10-26 | 2017-07-14 | 江苏保捷锻压有限公司 | Improve the forging technology of vehicle manual gearbox-gear gear steel billet metallographic structure |
| CA3091627A1 (en) * | 2017-06-03 | 2018-12-06 | Atulkumar Raghavjibhai SARADVA | A process of manufacturing of segments for carbon thrust bearing |
| CN107365901A (en) * | 2017-06-06 | 2017-11-21 | 安徽腾龙泵阀制造有限公司 | A kind of processing method for improving chemical pump pump case case hardness |
| CN107524707A (en) * | 2017-08-28 | 2017-12-29 | 大连冶金工具厂有限公司 | A kind of bearing holder (housing, cover) processing technology |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1436251A (en) * | 2000-06-15 | 2003-08-13 | 尤迪霍尔姆工具公司 | Steel alloy, plastic moulding tool and tough-hardened blank for plastic moulding tools |
| CN1676653A (en) * | 2005-04-18 | 2005-10-05 | 宝钢集团上海五钢有限公司 | Anticorrosion, wear-resistant plastic die steel 4Cr16Mo and its mirror large-die-block preparing and producing method |
| JP2007131902A (en) * | 2005-11-09 | 2007-05-31 | Ntn Corp | Continuous production line for mechanical component having annular piece built in, and induction heating device |
| CN101576123A (en) * | 2008-05-09 | 2009-11-11 | 嵊州市美亚特种轴承厂 | Process for manufacturing bearing ring |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3888865B2 (en) * | 2000-10-25 | 2007-03-07 | 株式会社ゴーシュー | Forging method |
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2014
- 2014-03-27 CN CN201410119118.6A patent/CN104942192B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1436251A (en) * | 2000-06-15 | 2003-08-13 | 尤迪霍尔姆工具公司 | Steel alloy, plastic moulding tool and tough-hardened blank for plastic moulding tools |
| CN1676653A (en) * | 2005-04-18 | 2005-10-05 | 宝钢集团上海五钢有限公司 | Anticorrosion, wear-resistant plastic die steel 4Cr16Mo and its mirror large-die-block preparing and producing method |
| JP2007131902A (en) * | 2005-11-09 | 2007-05-31 | Ntn Corp | Continuous production line for mechanical component having annular piece built in, and induction heating device |
| CN101576123A (en) * | 2008-05-09 | 2009-11-11 | 嵊州市美亚特种轴承厂 | Process for manufacturing bearing ring |
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| CN104942192A (en) | 2015-09-30 |
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Address after: 264000 Huan Hai Road, Zhifu District, Yantai, Shandong Province, No. 80 Patentee after: Hailu (Yantai) Environmental Dredging Co.,Ltd. Country or region after: China Address before: 264000 Huan Hai Road, Zhifu District, Yantai, Shandong Province, No. 80 Patentee before: CCCC TDC ENVIRONMENTAL PROTECTION DREDGING Co.,Ltd. Country or region before: China |