CN104384847A - Binaural U-shaped piece welding-free integrated finish machining method for thermonuclear fusion reactor - Google Patents
Binaural U-shaped piece welding-free integrated finish machining method for thermonuclear fusion reactor Download PDFInfo
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- CN104384847A CN104384847A CN201410527402.7A CN201410527402A CN104384847A CN 104384847 A CN104384847 A CN 104384847A CN 201410527402 A CN201410527402 A CN 201410527402A CN 104384847 A CN104384847 A CN 104384847A
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Abstract
The invention relates to a machining technology of U-shaped pieces, in particular to a binaural U-shaped piece welding-free integrated finish machining method for a thermonuclear fusion reactor. The binaural U-shaped piece welding-free integrated finish machining method comprises the steps of manufacturing U-shaped blank pieces by using a forming die; carrying out first ultrasonic flaw detection on the U-shaped blank pieces after rough machining is carried out on the U-shaped blank pieces; carrying out rough machining again after heat treatment is carried out, then carrying out second ultrasonic flaw detection, picking out qualified U-shaped pieces, and carrying out a performance test by extracting samples from bodies; machining the U-shaped pieces which are qualified in the performance test into U-shaped pieces with allowance, and then manufacturing the U-shaped pieces into primary semi-finish machining U-shaped pieces by carrying out first artificial aging treatment on the U-shaped pieces; machining the primary semi-finish machining U-shaped pieces into U-shaped pieces with allowance, and then manufacturing the U-shaped pieces into secondary semi-finish machining U-shaped pieces by carrying out second artificial aging treatment on the U-shaped pieces; machining the secondary semi-finish machining U-shaped pieces into finish machining U-shaped pieces, drilling through holes in the end surfaces of side plates of the finish machining U-shaped pieces, and obtaining finished U-shaped pieces through WEDM (Wire Electrical Discharge Machining) after a metal wire is enabled to penetrate through the through holes. The binaural U-shaped piece welding-free integrated finish machining method disclosed by the invention has the advantages that the machining efficiency is high, and the product quality is good.
Description
Technical field
The present invention relates to U-shaped part processing technology, specifically a kind of thermonuclear fusion heap ears U-shaped part non-welding integral precision machining method.
Background technology
International Thermal-Nuclear Experimental Reactor plan participates in the International Thermal-Nuclear Experimental Reactor of construction by European Union, China, the U.S., Russia, Japan, Korea S and state of India seven in 2005, object develops controlled core change technology, for the mankind provide new forms of energy that are unlimited, clean, safety.Use a kind of U-shaped part in thermonuclear fusion experimental reactor, it is made up of 316LN austenitic stainless steel material, and require that when 4K (-269 degrees Celsius) yield strength is greater than 700Mpa, tensile strength is greater than 1385Mpa.
The product processed according to existing processing method is many welded structures, and concrete steps are: first, respectively processing end ear, base, side plate and gusset; Secondly, side plate is processed tapered slot groove; Finally, U-shaped part is made in the welding of end ear, base, the side plate being processed with tapered slot groove and gusset.Because 316LN austenitic stainless steel material belongs to austenite structure, change without ppolymorphism, grain size cannot be improved by heat treatment, so weld grain size is thick, welding deformation large, mechanical property cannot meet the demands, there is great potential safety hazard in the equipment of this many welded structures, reliability is extremely low under special running environment.So adopt the mode of overall processing to substitute welding manner, but due to U-shaped part side plate needing out tapered slot groove during overall processing, its seam is wide to be compared up to 1:100 with groove depth, and skirt walls is very thin, cross section is large, size and Geometrical Tolerance Principle high, groove inside surface roughness is required to be Ra3.2 μm, so extremely difficult processing groove, and being difficult to guarantee, to add man-hour U-shaped part entirety indeformable.In a word, existing processing method can not process that mechanical property is qualified, the U-shaped part of dimensional accuracy and the satisfactory thermonuclear fusion experimental reactor of form and position tolerance.
Summary of the invention
For above-mentioned weak point of the prior art, the present invention aim to provide a kind of reliability high, without the need to welding, without distortion, material structure evenly, machining accuracy and mechanical property better thermonuclear fusion heap ears U-shaped part non-welding integral precision machining method.
For solving the problems of the technologies described above, technical scheme of the present invention is for comprising the following steps:
(1) the overall conformal of mould, is adopted to make U-shaped blank;
(2), by U-shaped blank carry out roughing, then carry out first time ultrasonic examination;
(3), U-shaped blank qualified for first time ultrasonic examination is heat-treated after again carry out roughing, then carry out second time ultrasonic examination, select flaw detection qualified U-shaped part, body is materialsed and is made a service test;
(4), U-shaped part qualified for performance test is processed into the U-shaped part leaving 3mm ~ 8mm surplus, then this U-shaped part is carried out first time artificial aging process and make a semifinishing U-shaped part;
(5), by a semifinishing U-shaped part be processed into the U-shaped part leaving 1mm ~ 2.9mm surplus, then this U-shaped part carried out the process of second time artificial aging and make secondary semifinishing U-shaped part;
(6), by secondary semifinishing U-shaped part be processed into fine finishining U-shaped part, bore at least one through hole at fine finishining U-shaped part side plate end face, then wire is carried out Linear cut through through hole, make the finished product U-shaped part with tapered slot groove.
Concrete, described heat treatment is that U-shaped blank was warmed up to 1050 DEG C ~ 1070 DEG C in 3 hours ~ 6 hours, carries out water-cooled after being then incubated 2 hours ~ 5 hours.
Described first time artificial aging process and second time artificial aging process are all be incubated 2 hours ~ 6 hours under 300 DEG C ~ 400 DEG C conditions, and it is cold to carry out stove afterwards.
The side plate end face of described fine finishining U-shaped part bores three through holes, lays respectively at side plate end face top, middle part, bottom, then carries out Linear cut from top to bottom.
Thermonuclear fusion heap ears U-shaped part non-welding integral precision machining method of the present invention has the following advantages:
First, save welding step, adopt overall processing, the product processed is integral type structure but not welded structure, not only successfully avoid U-shaped part problem on deformation in welding process, and improve product reliability of operation in particular circumstances, successfully avoid the defect that welding position grain size is thick, bulk deformation large and mechanical property is not up to standard, production efficiency is high; The second, ultrasonic examination effectively can verify that U-shaped part is inner with or without excessive defect, and whether the body mechanical property of carrying out performance testing authentication U-shaped part of materialsing is qualified, ensures the quality of U-shaped part; 3rd, machining stress is effectively eliminated in artificial aging process; 4th, bore at least one through hole at fine finishining U-shaped part side plate end face, carry out Linear cut with wire through through hole, this kind of Linear cut mode effective guarantee U-shaped part size and form and position tolerance meet the demands.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the front view of U-shaped blank in thermonuclear fusion heap ears U-shaped part non-welding integral precision machining method of the present invention;
Fig. 2 is the side view of U-shaped blank in thermonuclear fusion heap ears U-shaped part non-welding integral precision machining method of the present invention;
Fig. 3 is the structural representation of fine finishining U-shaped part in thermonuclear fusion heap ears U-shaped part non-welding integral precision machining method of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described.Obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figures 1 and 3, technical scheme of the present invention comprises the following steps:
(1) the overall conformal of mould, is adopted to make U-shaped blank; Ensure forging distortion evenly, metallic fiber streamline distributes with shape of product, even tissue, grain refinement.
(2), by U-shaped blank carry out roughing, then carry out first time ultrasonic examination; Described roughing is for datum level is put on the table with A face, clip with fixture, processing upper surface F and upper surface G, then turn-over, with F face and G face for benchmark, look for side C and side D, milling A face, then milling side C and side D, milling B face and E face afterwards, then the milling flange back side, last milling inner surface, needs to stay allowance according to actual conditions in roughing process.
(3), U-shaped blank qualified for first time ultrasonic examination is heat-treated after again carry out roughing, then carry out second time ultrasonic examination, select flaw detection qualified U-shaped part, body is materialsed and is made a service test; Described heat treatment is that U-shaped blank was warmed up to 1050 DEG C ~ 1070 DEG C in 3 hours ~ 6 hours, carries out water-cooled after being then incubated 2 hours ~ 5 hours.
(4), qualified for performance test U-shaped part is processed into the U-shaped part leaving 3mm ~ 8mm surplus, then this U-shaped part is carried out first time artificial aging process and make a semifinishing U-shaped part; Described first time artificial aging process is incubated 2 hours ~ 6 hours under 300 DEG C ~ 400 DEG C conditions, and it is cold to carry out stove afterwards.
(5), by a semifinishing U-shaped part be processed into the U-shaped part leaving 1mm ~ 2.9mm surplus, then this U-shaped part carried out the process of second time artificial aging and make secondary semifinishing U-shaped part; The process of described second time artificial aging is all be incubated 2 ~ 6 hours under 300 DEG C ~ 400 DEG C conditions, and it is cold to carry out stove afterwards.
(6), secondary semifinishing U-shaped part is processed into fine finishining U-shaped part, at least one through hole is bored at fine finishining U-shaped part side plate end face, then wire is carried out Linear cut through through hole, make the finished product U-shaped part with tapered slot groove, described Linear cut can realize hi-Fix, fixing Methods in WEDM-HS, low feeding without striped cutting mode, steady, non-jitter during cutting, cutting surfaces roughness is Ra1.6 ~ 3.2 μm, and cutting efficiency is high.Concrete, the side plate end face of described fine finishining U-shaped part bores three through holes, lays respectively at side plate end face top, middle part, bottom, then carries out Linear cut from top to bottom.
In concrete practice of the present invention, qualified for performance test U-shaped part is processed into the U-shaped part leaving 6mm surplus, then this U-shaped part is carried out first time artificial aging process and make a semifinishing U-shaped part, a semifinishing U-shaped part is processed into the U-shaped part leaving 2.5mm surplus, then this U-shaped part is carried out the process of second time artificial aging and make secondary semifinishing U-shaped part; Finally secondary semifinishing U-shaped part is processed into fine finishining U-shaped part; Leave in 6mm and 2.5mm surplus and accurately machined process being processed into, first need process intracavity bottom and the side lower of U-shaped part, it is made freely to discharge stress, process U-shaped part lumen side Middle face and top successively again, finally process all the other each portions, eliminate machining stress by twice artificial aging process and add the mode freely discharging stress man-hour and combine, ensure that the U-shaped part be processed into is indeformable, and size and form and position tolerance meeting the demands.
Claims (4)
1. a thermonuclear fusion heap ears U-shaped part non-welding integral precision machining method, is characterized in that comprising the following steps:
(1) the overall conformal of mould, is adopted to make U-shaped blank;
(2), by U-shaped blank carry out roughing, then carry out first time ultrasonic examination;
(3), U-shaped blank qualified for first time ultrasonic examination is heat-treated after again carry out roughing, then carry out second time ultrasonic examination, select flaw detection qualified U-shaped part, body is materialsed and is made a service test;
(4), U-shaped part qualified for performance test is processed into the U-shaped part leaving 3mm ~ 8mm surplus, then this U-shaped part is carried out first time artificial aging process and make a semifinishing U-shaped part;
(5), by a semifinishing U-shaped part be processed into the U-shaped part leaving 1mm ~ 2.9mm surplus, then this U-shaped part carried out the process of second time artificial aging and make secondary semifinishing U-shaped part;
(6), by secondary semifinishing U-shaped part be processed into fine finishining U-shaped part, bore at least one through hole at fine finishining U-shaped part side plate end face, then wire is carried out Linear cut through through hole, make the finished product U-shaped part with tapered slot groove.
2. thermonuclear fusion heap ears U-shaped part non-welding integral precision machining method according to claim 1, it is characterized in that described heat treatment is that U-shaped blank was warmed up to 1050 DEG C ~ 1070 DEG C in 3 hours ~ 6 hours, after being then incubated 2 hours ~ 5 hours, carry out water-cooled.
3. thermonuclear fusion heap ears U-shaped part non-welding integral precision machining method according to claim 1, it is characterized in that first time artificial aging process and the process of second time artificial aging are all be incubated 2 hours ~ 6 hours under 300 DEG C ~ 400 DEG C conditions, it is cold to carry out stove afterwards.
4. thermonuclear fusion heap ears U-shaped part non-welding integral precision machining method according to claim 1, it is characterized in that the side plate end face of fine finishining U-shaped part bores three through holes, lay respectively at side plate end face top, middle part, bottom, then carry out Linear cut from top to bottom.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105405629A (en) * | 2015-11-20 | 2016-03-16 | 南通弘峰机电有限公司 | Processing process of base for large-scale transformer |
| CN108296713A (en) * | 2018-01-27 | 2018-07-20 | 李丽 | A kind of M fonts parts machining process |
| CN113020912A (en) * | 2021-03-16 | 2021-06-25 | 彩虹集团有限公司 | Machining method of U-shaped bottom plate of sliding rail |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101670416A (en) * | 2008-09-09 | 2010-03-17 | 上海重型机器锻件厂 | Forging molding method for million kilowatt nuclear power main pipe |
| CN102091751A (en) * | 2010-12-03 | 2011-06-15 | 太原科技大学 | Control method for 316 LN steel heavy-forging forging crystalline grain |
| CN102634738A (en) * | 2012-03-29 | 2012-08-15 | 宝山钢铁股份有限公司 | Supporting roller with roughness keeping capability and manufacturing method thereof |
| CN103194581A (en) * | 2013-04-11 | 2013-07-10 | 太原钢铁(集团)有限公司 | Control method of austenitic stainless steel large forging structure for nuclear reactor |
| US20140083319A1 (en) * | 2012-09-27 | 2014-03-27 | National Machinery Llc | Precision forged cartridge case |
-
2014
- 2014-10-09 CN CN201410527402.7A patent/CN104384847B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101670416A (en) * | 2008-09-09 | 2010-03-17 | 上海重型机器锻件厂 | Forging molding method for million kilowatt nuclear power main pipe |
| CN102091751A (en) * | 2010-12-03 | 2011-06-15 | 太原科技大学 | Control method for 316 LN steel heavy-forging forging crystalline grain |
| CN102634738A (en) * | 2012-03-29 | 2012-08-15 | 宝山钢铁股份有限公司 | Supporting roller with roughness keeping capability and manufacturing method thereof |
| US20140083319A1 (en) * | 2012-09-27 | 2014-03-27 | National Machinery Llc | Precision forged cartridge case |
| CN103194581A (en) * | 2013-04-11 | 2013-07-10 | 太原钢铁(集团)有限公司 | Control method of austenitic stainless steel large forging structure for nuclear reactor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105405629A (en) * | 2015-11-20 | 2016-03-16 | 南通弘峰机电有限公司 | Processing process of base for large-scale transformer |
| CN108296713A (en) * | 2018-01-27 | 2018-07-20 | 李丽 | A kind of M fonts parts machining process |
| CN113020912A (en) * | 2021-03-16 | 2021-06-25 | 彩虹集团有限公司 | Machining method of U-shaped bottom plate of sliding rail |
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| CN104384847B (en) | 2016-07-06 |
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Address after: 563000 electromechanical Manufacturing Industrial Park, Guiyang Economic and Technological Development Zone, Guizhou Province Patentee after: Guizhou Aerospace Xinli Technology Co.,Ltd. Address before: 563003 Zunyi Park, Guizhou Aerospace hi tech Industrial Park, aerospace Road, Zunyi City, Guizhou Province Patentee before: GUIZHOU AEROSPACE XINLI CASTINGS AND FORGINGS Co.,Ltd. |