CN109093330A - A kind of water swelling moulding process of silencer for automobile - Google Patents
A kind of water swelling moulding process of silencer for automobile Download PDFInfo
- Publication number
- CN109093330A CN109093330A CN201810983313.1A CN201810983313A CN109093330A CN 109093330 A CN109093330 A CN 109093330A CN 201810983313 A CN201810983313 A CN 201810983313A CN 109093330 A CN109093330 A CN 109093330A
- Authority
- CN
- China
- Prior art keywords
- water swelling
- pressure
- product
- silencer
- mold
- 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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Classifications
-
- 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
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
- B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
- B21D26/033—Deforming tubular bodies
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Exhaust Silencers (AREA)
Abstract
The invention discloses a kind of water swelling moulding process of silencer for automobile, it is characterised in that comprises the following steps that: stainless steel pipe is cut off, and remove flash removed；Stainless steel pipe is subjected to bend pipe by the appearance of product with bending machine.By elbow member solution treated, then pipe fitting both ends are formed both ends with plug, to keep the outer circular shape at both ends constant, then with cold stamping die are disposably flattened middle section using hydraulic press, hydraulic press applies pressure and is greater than 315 tons；After carrying out solution treated to product again, embryo material is put into water swelling mold, pressure will be applied to mold using water swelling machine, both mold ends push formed punch to squeeze pipe fitting by two pressurized cylinders, and formed punch inner hole injects the saponification liquor of 20MPa pressure, after water swelling molding, from middle part by cutting workpiece, constitute two pieces, water swelling machine molding parameter be provided that water swelling machine apply pressure: 315 tons, pressure 20MPa；Pressurized cylinder exports hydraulic pressure and is greater than 160MPa；Left and right sides cylinder output pressure output pressure is greater than 20MPa.
Description
Technical field
The present invention relates to water swelling forming field more particularly to a kind of water swelling moulding process of silencer for automobile.
Background technique
Silencer for automobile is the important component on automobile, and silencer is needed due to working at high temperature for a long time
Component resistant to high temperature is used, simultaneously because national emission request is also increasingly stringenter, therefore the row in the silencer of automobile
The gas put will be post-processed, and the harmful substance in gas is generally disposed frequently with urea liquid, since urea has
It is corrosive, therefore higher to the material requirements of silencer, while corroding in order to prevent, it is general using having anti-corrosion and antirust
Stainless steel material, and the structure of silencer is different according to vehicle, appearance type is more, and moves towards complicated, and in order to full
The compact requirement of sufficient vehicle, most of shape uses irregular shape, and the way of the prior art is usually used and is drawn into
Type, and for irregular switch, generally by the way of welding, the product of multiple rules is welded into a global facility,
Prior art has the drawback that, since the wall of common product is very thin, cracking is easy at welding, the requirement to welding is high, multiple
The production required precision of product mix is high, while needing a large amount of tooling to guarantee the required precision of product mix, production technology
Complexity, product appearance is bad, and can only also do some simple products of phase junction structure, and relative complex product is unable to complete, greatly
Part component can only can just accomplish that energy consumption is high, and at high cost, complex process, the production cycle is long, product using the molding technique of essence casting
Service life is short, precision it is difficult to ensure that.
Summary of the invention
The invention discloses a kind of water swelling moulding process of silencer for automobile, with so as to solve the deficiencies in the prior art.
To solve the above problems, the technical solution of the invention is as follows:
A kind of water swelling moulding process of silencer for automobile, comprises the following steps that:
(1), stainless steel pipe is cut off, and removes flash removed；
(2), stainless steel pipe is subjected to bend pipe by the appearance of product with bending machine.
(3), by elbow member solution treated, then by pipe fitting both ends plug sizing both ends, to keep the outer ring at both ends
Shape is constant, then is disposably flattened middle section using hydraulic press with cold stamping die, and hydraulic press applies pressure and is greater than 315 tons；
(4) after carrying out solution treated to product again, embryo material is put into water swelling mold, mold will be applied using water swelling machine
Plus-pressure, both mold ends push formed punch to squeeze pipe fitting by two pressurized cylinders, and formed punch inner hole injects the saponification liquor of 20MPa pressure, water
After being expanded into type, from middle part by cutting workpiece, two pieces is constituted, water swelling machine molding parameter is provided that
Water swelling machine application pressure: 315 tons, pressure 20MPa；
Pressurized cylinder exports hydraulic pressure and is greater than 160MPa；
Left and right sides cylinder output pressure output pressure is greater than 20MPa；
Water vat volume is greater than 2L, and moisturizing pressure is less than 5MPa；
(5), two kinds of identical semi-finished product are formed to the semi-finished product after water swelling forming by cutting from middle part, then to product into
Row machining；
(6), polishing, high frequency polish semi-finished product；
(7), cleaning, anodic oxidation；
(8), ultrasonic constant-temperature is dried, and forms final silencer product；
One end of the silencer is round, and the other end is square structure.
The beneficial effects of the present invention are: molding stainless steel-like silencer product is carried out using water swelling moulding process, due to being
Overall process uses cold working mode, improves product into appearance quality, and process velocity is fast, and improves production efficiency,
The manufacturing cost of product is reduced, and product rigidity after molding is stablized, structure is firm, seamless, internal stress free, no sand
Eye, no internal injury, accurate water swelling, environmentally protective, high production efficiency is energy-saving, and product can use disposal molding, main body knot
Structure does not use welding structure, long product lifecycle.
Detailed description of the invention
Fig. 1 is acoustic wave filter structure schematic diagram of the invention；
Specific embodiment
Specific embodiments of the present invention will be described in further detail with reference to the accompanying drawing.
The present invention comprises the following steps that:
(1), stainless steel pipe is cut off, and removes flash removed；
(2), stainless steel pipe is subjected to bend pipe by the appearance of product with bending machine.
(3), by elbow member solution treated, then by pipe fitting both ends plug sizing both ends, to keep the outer ring at both ends
Shape is constant, then is disposably flattened middle section using hydraulic press with cold stamping die, and hydraulic press applies pressure and is greater than 315 tons；
(4) after carrying out solution treated to product again, embryo material is put into water swelling mold, mold will be applied using water swelling machine
Plus-pressure, both mold ends push formed punch to squeeze pipe fitting by two pressurized cylinders, and formed punch inner hole injects the saponification liquor of 20MPa pressure, water
After being expanded into type, from middle part by cutting workpiece, two pieces is constituted, water swelling machine molding parameter is provided that
Water swelling machine application pressure: 315 tons, pressure 20MPa；
Pressurized cylinder exports hydraulic pressure and is greater than 160MPa；
Left and right sides cylinder output pressure output pressure is greater than 20MPa；
Water vat volume is greater than 2L, and moisturizing pressure is less than 5MPa；
(5), two kinds of identical semi-finished product are formed to the semi-finished product after water swelling forming by cutting from middle part, then to product into
Row machining；
(6), polishing, high frequency polish semi-finished product；
(7), cleaning, anodic oxidation；
(8), ultrasonic constant-temperature is dried, and forms final silencer product；
One end of the silencer is round, and the other end is square structure.
In practical applications, the molding cold machining process of water swelling is used, stainless steel can only will be formed using essence casting originally
Silencer, carried out by the way of cold working, the Product Precision manufactured is higher, and appearance is more beautiful, shaping speed is fast,
High production efficiency, stiff stability, structure is firm, seamless, internal stress free, no sand holes, no internal injury, and accurate water swelling is environmentally protective,
High production efficiency, it is energy-saving.
And when using the silencer of water swelling molding stainless steel, since water swelling technique has the certain limitation of itself, molding
Parameter will directly influence the quality of the product of the molding appearance of product, therefore forming in water swelling will be according to the material of stainless steel
Expect characteristic, also, silencer class product is general bigger, common property product are generally composed with different cross section shape, therefore
It just needs to carry out product appearance cold working in advance, so that product is had rough shape, can just idiosome be enable to be put into this way
To in mold, otherwise, on the one hand, product can not be put into mold and be formed, and not on the one hand, raw material are due to being to use
Stainless steel pipe will form rectangular shape, and the length extended required for material is just longer, and material is during extension, embryo
The other parts of body also will receive a degree of influence, directly adopt the case where water swelling molding just will appear drawing crack, it is therefore desirable to
Preform is carried out in advance, after foring the general shape of product, then after carrying out solution treated, then embryo material is put into water swelling mold
In, pressure will be applied to mold using water swelling machine, both mold ends push formed punch to squeeze pipe fitting, formed punch inner hole note by two pressurized cylinders
Enter the saponification liquor of 20MPa pressure, after water swelling molding, from middle part by cutting workpiece, constitutes two pieces, water swelling machine molding parameter is arranged such as
Under: water swelling machine application pressure: 315 tons, pressure 20MPa；Pressurized cylinder exports hydraulic pressure and is greater than 160MPa；Left and right sides cylinder output pressure
Output pressure is greater than 20MPa；Water vat volume is greater than 2L, and moisturizing pressure is less than 5MPa, has molding parameter through the above arrangement, done
Product surface quality out is good, and no drawing crack phenomenon, molding time is short, high-efficient, and whole without heat processing technique, product
The advantages of wall thickness can also accomplish 0.5mm hereinafter, light weight, shank welding, long service life.
Above-mentioned specific embodiment is the preferred embodiment of the present invention, can not be limited the invention, and others are appointed
The change or other equivalent substitute modes what is made without departing from technical solution of the present invention, are included in protection of the invention
Within the scope of.
Claims (2)
1. a kind of water swelling moulding process of silencer for automobile, it is characterised in that comprise the following steps that:
(1), stainless steel pipe is cut off, and removes flash removed；
(2), stainless steel pipe is subjected to bend pipe by the appearance of product with bending machine.
(3), by elbow member solution treated, then by pipe fitting both ends plug sizing both ends, to keep the outer circular shape at both ends not
Become, then disposably flattened middle section using hydraulic press with cold stamping die, hydraulic press applies pressure and is greater than 315 tons；
(4) after carrying out solution treated to product again, embryo material is put into water swelling mold, pressure will be applied to mold using water swelling machine
Power, both mold ends push formed punches to squeeze pipe fittings by two pressurized cylinders, and formed punch inner hole injects the saponification liquor of 20MPa pressure, water swelling at
After type, from middle part by cutting workpiece, two pieces is constituted, water swelling machine molding parameter is provided that
Water swelling machine application pressure: 315 tons, pressure 20MPa；
Pressurized cylinder exports hydraulic pressure and is greater than 160MPa；
Left and right sides cylinder output pressure output pressure is greater than 20MPa；
Water vat volume is greater than 2L, and moisturizing pressure is less than 5MPa；
(5), two kinds of identical semi-finished product are formed, then carry out machine to product by cutting from middle part to the semi-finished product after water swelling forming
Tool processing；
(6), polishing, high frequency polish semi-finished product；
(7), cleaning, anodic oxidation；
(8), ultrasonic constant-temperature is dried, and forms final silencer product.
2. the water swelling moulding process of silencer for automobile according to claim 1, it is characterised in that: the silencer
One end is round, and the other end is square structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810983313.1A CN109093330B (en) | 2018-08-27 | 2018-08-27 | Water expansion forming process of automobile silencer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810983313.1A CN109093330B (en) | 2018-08-27 | 2018-08-27 | Water expansion forming process of automobile silencer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109093330A true CN109093330A (en) | 2018-12-28 |
| CN109093330B CN109093330B (en) | 2021-09-03 |
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ID=64851401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810983313.1A Active CN109093330B (en) | 2018-08-27 | 2018-08-27 | Water expansion forming process of automobile silencer |
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| Country | Link |
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| CN (1) | CN109093330B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111546002A (en) * | 2020-05-11 | 2020-08-18 | 明达铝业科技(太仓)有限公司 | Integrated forming process for producing rear controller shell of lower tube of electric bicycle |
| CN113182395A (en) * | 2021-04-29 | 2021-07-30 | 佛山市南海区显威五金塑料有限公司 | Hydraulic bulging processing technology and bulging die for stainless steel faucet bent pipe |
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| JP2007245180A (en) * | 2006-03-15 | 2007-09-27 | Jfe Steel Kk | Method and apparatus for hydroforming metallic tube |
| CN203604012U (en) * | 2013-11-19 | 2014-05-21 | 浙江吉利汽车研究院有限公司 | Automobile muffler |
| CN107263134A (en) * | 2017-05-04 | 2017-10-20 | 西安优耐特容器制造有限公司 | A kind of supporting tool and forming method for thin-wall bend cold forming |
| CN107755512A (en) * | 2016-08-20 | 2018-03-06 | 无锡明豪汽车轻量化技术应用有限公司 | A kind of tubular member moulding process |
| CN107900181A (en) * | 2017-12-07 | 2018-04-13 | 平湖爱驰威汽车零部件有限公司 | A kind of automobile tail pipe former and application method |
| CN107931401A (en) * | 2017-11-30 | 2018-04-20 | 苏州紫荆清远新能源汽车技术有限公司 | The molding machine and method of a kind of bodywork parts |
-
2018
- 2018-08-27 CN CN201810983313.1A patent/CN109093330B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007245180A (en) * | 2006-03-15 | 2007-09-27 | Jfe Steel Kk | Method and apparatus for hydroforming metallic tube |
| CN203604012U (en) * | 2013-11-19 | 2014-05-21 | 浙江吉利汽车研究院有限公司 | Automobile muffler |
| CN107755512A (en) * | 2016-08-20 | 2018-03-06 | 无锡明豪汽车轻量化技术应用有限公司 | A kind of tubular member moulding process |
| CN107263134A (en) * | 2017-05-04 | 2017-10-20 | 西安优耐特容器制造有限公司 | A kind of supporting tool and forming method for thin-wall bend cold forming |
| CN107931401A (en) * | 2017-11-30 | 2018-04-20 | 苏州紫荆清远新能源汽车技术有限公司 | The molding machine and method of a kind of bodywork parts |
| CN107900181A (en) * | 2017-12-07 | 2018-04-13 | 平湖爱驰威汽车零部件有限公司 | A kind of automobile tail pipe former and application method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111546002A (en) * | 2020-05-11 | 2020-08-18 | 明达铝业科技(太仓)有限公司 | Integrated forming process for producing rear controller shell of lower tube of electric bicycle |
| CN113182395A (en) * | 2021-04-29 | 2021-07-30 | 佛山市南海区显威五金塑料有限公司 | Hydraulic bulging processing technology and bulging die for stainless steel faucet bent pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109093330B (en) | 2021-09-03 |
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