CN102989984B - Forging process of forging and pressing central cavity through hole - Google Patents
Forging process of forging and pressing central cavity through hole Download PDFInfo
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- CN102989984B CN102989984B CN201210293363.XA CN201210293363A CN102989984B CN 102989984 B CN102989984 B CN 102989984B CN 201210293363 A CN201210293363 A CN 201210293363A CN 102989984 B CN102989984 B CN 102989984B
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Abstract
The invention relates to a forging process of a forging and pressing central cavity through hole, in particular to a forging process for integrally forging a central cavity through hole of a three-way valve body through a material (15NiCuMoNb5-6-4(WB36)), which belongs to the field of the machining of mechanical equipment, the gridding of a metallographic structure after the central cavity through hole is forged is compacter, the distribution of stress is more reasonable, the machining allowance of the mechanical machining can be greatly reduced after the central cavity through hole is forged, the machining efficiency is increased, the forging utilization rate of a forge piece is increased, materials are saved, the energy waste can be reduced, and the product cost is reduced.
Description
Technical field
The present invention relates to a kind of forging and stamping lumen through hole Forging Technology, specifically relate to the Forging Technology that a kind of material is 15NiCuMoNb5-6-4 (WB36) solid forging forging and stamping three-way valve body lumen through hole, it belongs to plant equipment manufacture field.
Background technology
Along with development and the growth of science and technology, the sustainable growth of various countries' economic strength, thermal power generation towards more high-power, more extensive future development.Particularly the universal and application of super (super-) critical fired power generating unit technology, impels thermoelectricity technology must rise to the level of more increasing.Research and development for super (super-) critical fired power generating unit critical valves have become the key factor of restriction fired power generating unit development.Compared with the height under high parameter, three-way valve is added for high temperature, high pound level, high-power, heavy caliber etc., material of main part 15NiCuMoNb5-6-4 (WB36) is EN10216-2 European standard number, this steel has the feature of intensity height and excellent weldability, and the height being widely used in 1000MW supercritical unit adds supply line, high-pressure heater is imported and exported and the manufacture of bypass valve.And adopting solid forging valve body, its volume is large, quality large, must ensure that again sufficient forging ratio, inner forging flow lines and material density requirement are wanted to meet performance; Thus its forging range has very high requirement.
Summary of the invention
The object of the invention is to provide a kind of for heavy caliber forging valve body, material is the Forging Technology of 15NiCuMoNb5-6-4 (WB36) solid forging forging and stamping three-way valve body lumen through hole, to improve the forging utilization rate of forging, reduce engine processing capacity, save material, reduce energy waste, reduce the cost of product.
To achieve these goals, the technical solution used in the present invention is a kind of forging and stamping lumen through hole Forging Technology, and it is characterized in that: the technique for material being 15NiCuMoNb5-6-4 (WB36) solid forging forging and stamping three-way valve body, its process is:
A, to select materials: raw material is vacuum refining steel ingot;
B, heating: the recuperative heater selecting PLC 4 temperature controls; Its heating process is 3 processes, is first heated to 500 DEG C, is at the uniform velocity warming up to 800 DEG C by 500 DEG C, at 800 DEG C, be incubated 6-10 hour, then is warming up to 1150 DEG C-1180 DEG C;
C, forging: adopt Single arm to forge; It is divided into begin forging and finish-forging, and its initial forging temperature is 1150 DEG C-1180 DEG C, and whole satin temperature is 850 DEG C;
D, slow cooling: the product after forging, by 850 DEG C of Slow coolings, avoids the defects such as cracking.
The invention has the advantages that: after forging lumen through hole, metallographic structure grid is finer and closely woven, stress distribution trend is more reasonable, and after forging lumen through hole, greatly reduce the allowance of machining, improve working (machining) efficiency, improve the forging utilization rate of forging, save material, reduce energy waste, reduce the cost of product.
Accompanying drawing explanation
Fig. 1: the positive view of conventional monolithic forging metallographic structure grid distribution map;
Fig. 2: the top view of conventional monolithic forging metallographic structure grid distribution map;
Fig. 3: the positive view of solid forging lumen through hole metallographic structure grid distribution map;
Fig. 4: the top view of solid forging lumen through hole metallographic structure grid distribution map.
Detailed description of the invention
A kind of forging and stamping lumen through hole Forging Technology, its process is:
A, to select materials: raw material is vacuum refining steel ingot;
B, heating: the recuperative heater selecting PLC 4 temperature controls; Its heating process is 3 processes, is first heated to 500 DEG C, is at the uniform velocity warming up to 800 DEG C by 500 DEG C, at 800 DEG C, be incubated 6-10 hour, then is warming up to 1150 DEG C-1180 DEG C;
C, forging: adopt Single arm to forge; It is divided into begin forging and finish-forging, and its initial forging temperature is 1150 DEG C-1180 DEG C, and whole satin temperature is 850 DEG C;
D, slow cooling: the product after forging, by 850 DEG C of Slow coolings, avoids the defects such as cracking.
Claims (1)
1. forge and press lumen through hole Forging Technology, it is characterized in that: the technique for material being 15NiCuMoNb5-6-4 (WB36) solid forging forging and stamping three-way valve body, its process is:
A, to select materials: raw material is vacuum refining steel ingot;
B, heating: the recuperative heater selecting PLC 4 temperature controls; Its heating process is 3 processes, is first heated to 500 DEG C, is at the uniform velocity warming up to 800 DEG C by 500 DEG C, at 800 DEG C, be incubated 6-10 hour, then is warming up to 1150 DEG C-1180 DEG C;
C, forging: adopt Single arm to forge; It is divided into begin forging and finish-forging, and its initial forging temperature is 1150 DEG C-1180 DEG C, and whole satin temperature is 850 DEG C;
D, slow cooling: the product after forging, by 850 DEG C of Slow coolings, avoids the defects such as cracking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210293363.XA CN102989984B (en) | 2012-08-17 | 2012-08-17 | Forging process of forging and pressing central cavity through hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210293363.XA CN102989984B (en) | 2012-08-17 | 2012-08-17 | Forging process of forging and pressing central cavity through hole |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102989984A CN102989984A (en) | 2013-03-27 |
| CN102989984B true CN102989984B (en) | 2015-06-10 |
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| CN201210293363.XA Active CN102989984B (en) | 2012-08-17 | 2012-08-17 | Forging process of forging and pressing central cavity through hole |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106694791A (en) * | 2016-12-12 | 2017-05-24 | 陕西宏远航空锻造有限责任公司 | Crack control and forming method for large and medium-sized GH141 alloy annular forged piece |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202137306U (en) * | 2011-07-11 | 2012-02-08 | 重庆红旗弹簧有限公司 | Heat storage type forging heating furnace |
| CN102444573A (en) * | 2010-10-11 | 2012-05-09 | 上海腾辉锻造有限公司 | Method for manufacturing forging pump shaft |
| CN102601282A (en) * | 2012-03-08 | 2012-07-25 | 无锡市法兰锻造有限公司 | Z2CND18-12N control nitrogen stainless steel forging technology |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP5299610B2 (en) * | 2008-06-12 | 2013-09-25 | 大同特殊鋼株式会社 | Method for producing Ni-Cr-Fe ternary alloy material |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102444573A (en) * | 2010-10-11 | 2012-05-09 | 上海腾辉锻造有限公司 | Method for manufacturing forging pump shaft |
| CN202137306U (en) * | 2011-07-11 | 2012-02-08 | 重庆红旗弹簧有限公司 | Heat storage type forging heating furnace |
| CN102601282A (en) * | 2012-03-08 | 2012-07-25 | 无锡市法兰锻造有限公司 | Z2CND18-12N control nitrogen stainless steel forging technology |
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| CN102989984A (en) | 2013-03-27 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Forging process for through hole forging in forging process Effective date of registration: 20230927 Granted publication date: 20150610 Pledgee: Dalian Branch of Shanghai Pudong Development Bank Co.,Ltd. Pledgor: DALIAN DV VALVE Co.,Ltd. Registration number: Y2023980059639 |
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