CN105033597A - Stretching corrugation removal process for stainless steel - Google Patents
Stretching corrugation removal process for stainless steel Download PDFInfo
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- CN105033597A CN105033597A CN201510480986.1A CN201510480986A CN105033597A CN 105033597 A CN105033597 A CN 105033597A CN 201510480986 A CN201510480986 A CN 201510480986A CN 105033597 A CN105033597 A CN 105033597A
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- workpiece
- stainless steel
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- die
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P17/00—Metal-working operations, not covered by a single other subclass or another group in this subclass
- B23P17/04—Metal-working operations, not covered by a single other subclass or another group in this subclass characterised by the nature of the material involved or the kind of product independently of its shape
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C25/00—Profiling tools for metal extruding
- B21C25/02—Dies
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The invention discloses a stretching corrugation removal process for stainless steel. The process comprises the following steps of stretching forming, extrusion of an extrusion die, and work-piece inner and outer wall surface treatment. According to stainless steel work-pieces produced through the process, a male die and a female die of the extrusion die are in interference fit during extrusion, inner and outer walls are extruded and scraped while the stainless steel work-pieces are extruded by the aid of suction and exhaust effects of air tubes, and coupled with the cooling and lubrication effects of lubrication oil, so that more than 90% of stretching corrugations on the outer walls of the stainless steel work-pieces can be removed, energy is saved, emission is reduced, part of inner and outer wall sanding processes are simplified, nearly 30% of production costs are reduced, and the inner and outer wall appearance and the coarseness quality are improved.
Description
Technical field
The present invention relates to stainless manufacturing technology, particularly the technique of the material line that stretches removed by stainless steel.
Background technology
In the process of stainless steel products, amount of heat can be produced during drawing and forming, due to dispel the heat inequality or heat too concentrated, the phenomenon that surface of the work ftractures or piles up can be caused, form the surface characteristics of the material line that stretches, usually need in rear operation to carry out three sand millings and twice polishing to workpiece inner wall, then three sand millings and stock removal polishing will be carried out to workpiece outer wall, not only cause a large amount of dust pollution air, and process loaded down with trivial details and the cycle is long, cost is higher, and production efficiency is low, is good at meeting performance requirement and the appearance requirement of product.
Summary of the invention
The technical problem to be solved in the present invention there is provided a kind of technique removing stainless steel stretched material line.
Technical scheme of the present invention is as follows:
The technique of the material line that stretches removed by stainless steel, comprises the following steps:
(1) drawing and forming;
(2) extrusion die extruding;
(3) the inside and outside wall surface process of workpiece.
Adopt above technique, after stainless steel work-piece drawing and forming, the outer wall of stainless steel work-piece can form the material line that stretches, again through the extrusion process of extrusion die, can tighten up supplementary to the breach of the material line that stretches, the material that can be formed the material line that stretches again is piled up and is smoothed process, under the squeezing action of extrusion die, make stainless steel work-piece outer wall smooth-going, to meet rear operation, the surface treatment of the inside and outside wall of stainless steel work-piece is processed, and make stainless steel work-piece reach the qualified requirement of production
In extrusion process, keep smooth to make the inside and outside wall of stainless steel work-piece, be convenient to material loading and the blanking of workpiece simultaneously, as preferably, described extrusion die is connected with air pump, the tracheae that Open Side Down is provided with in the middle part of the punch of this extrusion die, described tracheae is connected with air pump, during operation, evenly spreads lubricating oil in the punch outer wall bottom of described extrusion die; Workpiece is socketed in from the bottom up the bottom of punch, evenly spreads lubricating oil in the bottom of workpiece outer wall; Tracheae air-breathing makes to form vacuum between workpiece and punch, under atmospheric pressure effect, workpiece moves and makes to abut with punch lower surface bottom workpiece; Start mould, punch heads on workpiece and stretches into die, the inwall of punch outer wall and workpiece and mutually extrude scraping between die inwall and the outer wall of workpiece; Tracheae is exitted, and impact workpiece, workpiece directly drops out from the discharging opening of die lower end.
In order to reach the object removing material line better, as preferably, the force value of described extrusion die is 150T ~ 300T, and the translational speed that described punch stretches into die is 10mm/ second.
For the ease of processing the goods of multi-thickness, as preferably, the punch in described extrusion die is disconnectable, is interference fit between described punch and die, and the gap of its interference fit is 0.05 ~ 0.2mm.
In order to extend the service life of extrusion die, as preferably, in the punch and die of described extrusion die, be equipped with PVD coating.
In order to lower the temperature and lubricate to stainless steel work-piece in extrusion process, as preferably, described lubricating oil is MB-430 cutting fluid.
In order to the processing request of operation after meeting, as preferably, the roughness after workpiece outer wall extruding is Ra0.4 ~ 0.6 μm.
In order to produce the product meeting customer requirement, as preferably, the inside and outside wall surface process of workpiece is followed successively by: workpiece inner wall coarse sand; Workpiece inner wall fine sand; Workpiece outer wall polishing; Workpiece inner wall first time polishing; The polishing of workpiece inner wall second time.
Beneficial effect: adopt the stainless steel work-piece that technological process of the present invention processes, due to the punch of extrusion die and die interference fit in extrusion process, be aided with again endotracheal suction, exhaust effect while extruding stainless steel work-piece also to its inside and outside wall extruding scraping, add the effect of lubricating oil cooling and lubricating, the stretching material line of stainless steel work-piece outer wall more than 90% can be removed, energy-saving and emission-reduction, simplify the sand milling operation of the inside and outside wall of part, save the processing cost of nearly 30%, and improve outward appearance and the roughness quality of inside and outside wall.
Detailed description of the invention
The technique of the material line that stretches removed by this stainless steel provided by the invention, and concrete steps are as follows:
(1) drawing and forming: by stainless steel raw material drawing and forming in shaping stretching die;
(2) extrusion die extruding: concrete grammar is: according to the wall thickness of stainless steel work-piece to be processed, changes adaptive punch, and ensure that the gap between punch and die is interference fit, and the gap width of interference fit is between 0.05 ~ 0.2mm;
Described extrusion die is connected with air pump, the tracheae that Open Side Down is provided with in the middle part of the punch of this extrusion die, described tracheae is connected with air pump, during operation, evenly spread MB-430 cutting fluid in the punch outer wall bottom of extrusion die and the bottom of stainless steel work-piece outer wall, then stainless steel work-piece is socketed in the bottom of punch from the bottom up; Tracheae air-breathing makes to form vacuum between stainless steel work-piece and punch, and under atmospheric pressure effect, stainless steel work-piece moves and the inwall bottom stainless steel work-piece is abutted with punch lower surface on punch;
Start extrusion die, according to the wall thickness of stainless steel work-piece, adjust between the pressure of 150T ~ 300T, punch heads on stainless steel work-piece and stretches into die with the speed of 10mm/ second, the inwall of punch outer wall and stainless steel work-piece and mutually extrude scraping between die inwall and the outer wall of stainless steel work-piece, in the process, because the outer wall at punch outer wall and stainless steel work-piece is all coated with MB-430 cutting fluid, the heat that extruding produces can be distributed by absorption, ensure the lubrication between squeezing action face simultaneously, when stainless steel work-piece shifts out die completely, tracheae is exitted downwards, impact the bottom of stainless steel work-piece, and make stainless steel work-piece from landing punch, and directly drop out from the discharging opening of die lower end, the outer wall roughness of guarantee stainless steel work-piece is Ra0.4 ~ 0.6 μm,
(3) the inside and outside wall surface process of workpiece: the stainless steel work-piece after crushed is again through inwall coarse sand; Inwall fine sand; Outer wall polishing; Inwall first time polishing; The polishing of inwall second time carries out outward appearance process to stainless steel work-piece, the roughness of the inside and outside wall of stainless steel work-piece is made to reach Ra0.1 ~ 0.3 μm, save the concerned process steps of stainless steel work-piece outer wall surface process coarse sand process, directly polishing can be carried out after extruding, shorten the process-cycle, save cost, improve presentation quality and properties of product.
In addition, because the wearing and tearing of extrusion die are comparatively large, in the punch and die of described extrusion die, are provided with PVD coating, can wear strength be improved, extend die life, reduce production cost.
The MB-430 cutting fluid used is high-performance extreme-pressure water-soluble metalworking liquid, environmental protection, emulsion-stabilizing, free from extraneous odour, long service life.
In the present embodiment, institute's column data does not have uniqueness, and can carry out adaptation in conjunction with production specific requirement and regulate, it is consistent with prior art that the present invention does not describe part, and therefore not to repeat here.
These are only embodiments of the present invention, not thereby limit the scope of the claims of the present invention, every equivalent structure utilizing description of the present invention to do, be directly or indirectly used in the technical field that other are relevant, all in like manner within scope of patent protection of the present invention.
Claims (8)
1. the technique of the material line that stretches removed by stainless steel, it is characterized in that:
Comprise the following steps:
(1) drawing and forming;
(2) extrusion die extruding;
(3) the inside and outside wall surface process of workpiece.
2. the technique of the material line that stretches removed by stainless steel according to claim 1, it is characterized in that: described step 2) concrete grammar be: described extrusion die is connected with air pump, the tracheae that Open Side Down is provided with in the middle part of the punch of this extrusion die, described tracheae is connected with air pump, during operation, evenly spread lubricating oil in the punch outer wall bottom of described extrusion die; Workpiece is socketed in from the bottom up the bottom of punch, evenly spreads lubricating oil in the bottom of workpiece outer wall; Tracheae air-breathing makes to form vacuum between workpiece and punch, under atmospheric pressure effect, workpiece moves and makes to abut with punch lower surface bottom workpiece; Start mould, punch heads on workpiece and stretches into die, the inwall of punch outer wall and workpiece and mutually extrude scraping between die inwall and the outer wall of workpiece; Tracheae is exitted, and impact workpiece, workpiece directly drops out from the discharging opening of die lower end.
3. the technique of the material line that stretches removed by described stainless steel according to claim 2, and it is characterized in that: the force value of described extrusion die is 150T ~ 300T, the translational speed that described punch stretches into die is 10mm/ second.
4. the technique of the material line that stretches removed by described stainless steel according to claim 2, it is characterized in that: the punch in described extrusion die is disconnectable, punch in described extrusion die and be interference fit between die, the gap of its interference fit is 0.05 ~ 0.2mm.
5. the technique of the material line that stretches removed by described stainless steel according to claim 4, it is characterized in that: in the punch and die of described extrusion die, be equipped with PVD coating.
6. the technique of the material line that stretches removed by described stainless steel according to claim 2, it is characterized in that: described lubricating oil is MB-430 cutting fluid.
7. the technique of the material line that stretches removed by described stainless steel according to claim 1, it is characterized in that: the roughness after workpiece outer wall extruding is Ra0.4 ~ 0.6 μm.
8. the technique of the material line that stretches removed by described stainless steel according to claim 1, it is characterized in that: step 3) surface treatment be followed successively by: workpiece inner wall coarse sand; Workpiece inner wall fine sand; Workpiece outer wall polishing; Workpiece inner wall first time polishing; The polishing of workpiece inner wall second time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510480986.1A CN105033597B (en) | 2015-08-03 | 2015-08-03 | The technique that stainless steel removes stretching material line |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510480986.1A CN105033597B (en) | 2015-08-03 | 2015-08-03 | The technique that stainless steel removes stretching material line |
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| CN105033597A true CN105033597A (en) | 2015-11-11 |
| CN105033597B CN105033597B (en) | 2017-07-11 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1132125A (en) * | 1995-12-23 | 1996-10-02 | 刘景升 | Production process and mould of steel drum plug |
| CN1316369A (en) * | 2001-05-18 | 2001-10-10 | 王锐新 | Technology for forming aluminium-foil containers |
| CN201470709U (en) * | 2009-09-04 | 2010-05-19 | 上海交通大学 | Magnesium alloy seamless pipe extruding mould |
| WO2012157768A1 (en) * | 2011-05-19 | 2012-11-22 | 国立大学法人電気通信大学 | Pipe material manufacturing device, pipe material manufacturing method, and pipe material |
| CN202824416U (en) * | 2012-10-24 | 2013-03-27 | 贵州大学 | Bearing bush extrusion reshaping mold |
| CN104588426A (en) * | 2015-01-14 | 2015-05-06 | 江苏创一精锻有限公司 | Energy accumulator tank forging forming process and extrusion die |
-
2015
- 2015-08-03 CN CN201510480986.1A patent/CN105033597B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1132125A (en) * | 1995-12-23 | 1996-10-02 | 刘景升 | Production process and mould of steel drum plug |
| CN1316369A (en) * | 2001-05-18 | 2001-10-10 | 王锐新 | Technology for forming aluminium-foil containers |
| CN201470709U (en) * | 2009-09-04 | 2010-05-19 | 上海交通大学 | Magnesium alloy seamless pipe extruding mould |
| WO2012157768A1 (en) * | 2011-05-19 | 2012-11-22 | 国立大学法人電気通信大学 | Pipe material manufacturing device, pipe material manufacturing method, and pipe material |
| CN202824416U (en) * | 2012-10-24 | 2013-03-27 | 贵州大学 | Bearing bush extrusion reshaping mold |
| CN104588426A (en) * | 2015-01-14 | 2015-05-06 | 江苏创一精锻有限公司 | Energy accumulator tank forging forming process and extrusion die |
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| Publication number | Publication date |
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| CN105033597B (en) | 2017-07-11 |
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Address after: 402471, Panlong Road, Panlong Town, Rongchang District, Chongqing, 259 Applicant after: Chongqing Hongquan Xingye Metal Products Co., Ltd. Address before: 402471, Panlong Road, Panlong County, Rongchang, Chongqing, No. 259 Applicant before: RONGCHANG XINGYE INDUSTRIAL STAINLESS STEEL PRODUCTS CO., LTD. |
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