CN104862463A - Manufacturing process of large rotary lower support system - Google Patents
Manufacturing process of large rotary lower support system Download PDFInfo
- Publication number
- CN104862463A CN104862463A CN201410063068.4A CN201410063068A CN104862463A CN 104862463 A CN104862463 A CN 104862463A CN 201410063068 A CN201410063068 A CN 201410063068A CN 104862463 A CN104862463 A CN 104862463A
- Authority
- CN
- China
- Prior art keywords
- support system
- lower support
- manufacturing process
- rotary lower
- large rotary
- 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.)
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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Abstract
A manufacturing process of a large rotary lower support system is characterized by comprising the steps: step (1), firstly carrying out heat treatment; and step (2), then installing on site, after installation, processing, and carrying out medium-frequency heat treatment. Furthermore, the surface medium-frequency quenching hardness of the support system is 50-55 Rc, and the effective depth is more than 10 mm. The manufacturing process has the beneficial effects that the process makes the integrated consistency of rotary lower supports quite good, the equipment runs smoothly, and the service life is greatly improved.
Description
Technical field
The invention belongs to the manufacture field of revolution lower support system, particularly relate to a kind of manufacturing process of huge revolving lower support system.
Background technology
Large-scale full circle swinging crane barge is a kind of novel extra large construction equipment, and the diameter of its revolution lower support is all more than 10 meters, and revolution lower support is primary load-carrying members.At present, revolution lower support forms by common process explained hereafter, and any process is not done on surface, very easily weares and teares, and in use work-ing life is very of short duration, uses essentially by limit, and limit maintenance ensures operation.
The initial production technique of revolution lower support is: will turn round lower support segmental machining, and then Fractional Heat-treatment, medium frequency quenching arrive in-site installation after completing.But because the problem brought of installation error, integral device is run and brings very large problem, joint steady, like equipment operation there is a lot of problem, have a strong impact on the work-ing life of equipment.
Summary of the invention
The object of the present invention is to provide a kind of manufacturing process of huge revolving lower support system, it is reasonable in design, easy to process.
Technical scheme of the present invention is: a kind of manufacturing process of huge revolving lower support system, is characterized in that: step (1), and the split of lower support system is first heat-treated; Step (2) then arrives in-site installation, and intermediate frequency thermal treatment is carried out in field quenching after installing.
Further, in step (2), surperficial medium frequency quenching hardness 50-55Rc, more than the significant depth 10mm of support system.
In the present invention, material can be AISI4340MOD.This material has very high intensity and toughness, has good hardening capacity simultaneously.
Beneficial effect: technique of the present invention makes the global consistency turning round lower support very good, and equipment runs smooth and easy, substantially increases work-ing life.
The inventive method is applicable to 2 huge revolving lower support systems (diameter 10 meters to 60 meters); Belong to the modular design of composition optimizes, can only do over again and change in scene before making, directly exchange, improve production efficiency.
Embodiment
Below in conjunction with embodiment, the present invention will be further described.
A manufacturing process for huge revolving lower support system, is characterized in that: step (1), and the split of lower support system is first heat-treated; Step (2) then arrives in-site installation, and intermediate frequency thermal treatment is carried out in field quenching after installing.
Further, surperficial medium frequency quenching hardness 50-55Rc, more than the significant depth 10mm of support system.
The inventive method is applicable to 2 huge revolving lower support systems (diameter 10 meters to 60 meters), and technique makes the global consistency turning round lower support very good, and equipment runs smooth and easy, substantially increases work-ing life; The hardening technique of product surface is improved.
The present invention, by the advanced technologies of split forging, field quenching, major diameter revolving support plane and large needle pin wheel and mounting technology, solves lift heavy 4000 tons, deadweight more than 50 tons of domestic difficult problems that cannot directly forge of suspension hook.
Claims (3)
1. a manufacturing process for huge revolving lower support system, is characterized in that: step (1), and the split of lower support system is first heat-treated; Step (2) then arrives in-site installation, and intermediate frequency thermal treatment is carried out in field quenching after installing.
2. according to the manufacturing process of a kind of huge revolving lower support system of claim 1 art, it is characterized in that: surperficial medium frequency quenching hardness 50-55Rc, more than the significant depth 10mm of support system.
3. according to the manufacturing process of a kind of huge revolving lower support system of claim 1 art, it is characterized in that: the split material of lower support system is AISI4340.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410063068.4A CN104862463A (en) | 2014-02-25 | 2014-02-25 | Manufacturing process of large rotary lower support system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410063068.4A CN104862463A (en) | 2014-02-25 | 2014-02-25 | Manufacturing process of large rotary lower support system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104862463A true CN104862463A (en) | 2015-08-26 |
Family
ID=53908630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410063068.4A Pending CN104862463A (en) | 2014-02-25 | 2014-02-25 | Manufacturing process of large rotary lower support system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104862463A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101709741A (en) * | 2009-10-13 | 2010-05-19 | 鞍山钢铁轴承有限公司 | Asymmetrical multi-subdivision bearing and manufacture process thereof |
| JP2014092203A (en) * | 2012-11-01 | 2014-05-19 | Ntn Corp | Bearing ring and rolling bearing |
-
2014
- 2014-02-25 CN CN201410063068.4A patent/CN104862463A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101709741A (en) * | 2009-10-13 | 2010-05-19 | 鞍山钢铁轴承有限公司 | Asymmetrical multi-subdivision bearing and manufacture process thereof |
| JP2014092203A (en) * | 2012-11-01 | 2014-05-19 | Ntn Corp | Bearing ring and rolling bearing |
Non-Patent Citations (3)
| Title |
|---|
| 北京建筑机械综合研究所编: "《中国工程机械标准汇编 综合卷 上》", 31 May 2003, 中国标准出版社 * |
| 程秀全等主编: "《航空工程材料》", 31 May 2015, 国防工业出版社 * |
| 谢永杰等主编: "《兰州铁路局志 1956-1995》", 31 January 2001, 中国铁道出版社 * |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150826 |
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| WD01 | Invention patent application deemed withdrawn after publication |