CN104759486B - A kind of variable cross-section square type pipe C-type beam pyrocondensation forming method - Google Patents
A kind of variable cross-section square type pipe C-type beam pyrocondensation forming method Download PDFInfo
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- CN104759486B CN104759486B CN201510143190.7A CN201510143190A CN104759486B CN 104759486 B CN104759486 B CN 104759486B CN 201510143190 A CN201510143190 A CN 201510143190A CN 104759486 B CN104759486 B CN 104759486B
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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
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/15—Making tubes of special shape; Making tube fittings
Abstract
The invention provides a kind of variable cross-section square type pipe C-type beam pyrocondensation forming method, it includes following operation: (1) equivalent undergauge: after the two ends intermediate frequency heating of seamless pipe, the two ends of pipe is made conical tube, and small end is outside；(2) variable undergauge: on the basis of operation (1), after the conical tube at pipe two ends is adopted intermediate frequency heating, the conical tube often held is made has the two sections of continuous conical tubes not waiting cone angle；(3) the mid portion side of pushing away processing: adopt the side's of pushing away machine to force to be rolled into square tube by the round tube of mid portion；(4) two side pressure sides: two ends are respectively provided with not wait cone angle two sections of conical tubes be pressed into have not wait cone angle two sections of cross sections be the pipe of rectangle；(5) integrally bending molding: whole pipe is pressed into C-type beam body.The operation of this forming method is few, and production efficiency and constant product quality are high.
Description
Technical field
The present invention relates to the processing molding method of a kind of non-uniform beam, especially a kind of variable cross-section square type pipe C-type beam pyrocondensation forming method.
Background technology
Along with the development of society and economy, the progress of scientific level, the living standard of the people is improved constantly, and out on tours is the main selection that most people improve the quality of living.But because most tourist attractions are many in mountain area or mountain village, train, motor-car, high ferro tend not to direct arrival, and costly, route is not yet done, admission ticket is high in self-driving travel, causes tourism to be inconvenient for, so carriage passenger vehicle is formed a team, trip becomes optimum selection.
At present, along with the raising of scientific and technological level, the technical equipment ability of passenger vehicle constantly promotes, meet the demand that passenger is increasingly higher, such as the human oriented design in car, identify complete, soft interior trim and packaging, aesthetic appearance is good, and the inside and outside noise of car is little, and in car, sealing to be got well, air cleaner, free from dust in car, vehicle interior temperature is suitable for, driving stability, without jolting sense.Wherein, people are in the whole road of carriage passenger vehicle, it is desirable to reach the comfortableness of carriage, alleviate feeling of fatigue by bus, have and are suitable for the muscle power keeping visitor, promote the value of tourism.
The above-mentioned comfortableness to passenger vehicle carriage, the requirement alleviating feeling of fatigue by bus is to be realized by the work of chassis air suspension air conditioning system.First, from ground jolt or impulsive force by tire, stop pass in the C-type beam of suspension, every C-type beam is equipped with two air springs dock up and down with vehicle body, so, what the flexible elastic force of air spring had fully intercepted that road surface passes over jolts or impacts, when making to run, vehicle body is steady, and noise is little.
At present, C-type beam machine-shaping mode be first with cutting machine according to the curve reserved cutting plane abnormal shape plate on flat board, on the mould of large press, the U-shaped camber beam of two openings it is pressed into after polishing, as required, material limit unnecessary in flanging is removed, then with welding tooling, the U-shaped camber beam of two openings is attached together together, carry out welding fabrication, remove stub bar, finishing molding, polishing again, and be welded to connect place's ultrasonic examination inspection.
There is following drawback in above-mentioned conventional forming method:
1, operation is many, including cutting, punching press, cut edge, welding, polishing；
2, mach clout is many, and the equipment and the time that take are many, and stock utilization is low；
3, production efficiency is low, not easily realizes procedure and produces, and production lot is restricted；
4, precision is low, and cutting and welding are all accomplished manually, and homogeneity of product is difficult to ensure that；
5, welding quality is difficult to ensure that, owing to adopting two pieces of docking, butt welding gap, throat depth, pool depth are all not easily grasped, and the metallurgical reaction in molten bath can not workman control, and the probability causing random fracture is bigger；
6, ultrasonic examination inspection expends time in many, and after having weld defect, patch work amount is big；
7, the deadweight of beam body is relatively big, because to improve safe and reliable property coefficient, it is necessary to thickened material, to improve its Resisting fractre ability, but brings the problem that deadweight improves, Passenger Train Speed Increase is slow, fuel economy is poor therewith.
Summary of the invention
The technical problem to be solved in the present invention, it is simply that the deficiency existing for prior art, and a kind of variable cross-section square type pipe C-type beam pyrocondensation forming method is provided, the operation of this forming method is few, and production efficiency is high, and constant product quality is high.
This programme is achieved by the following technical measures: this variable cross-section square type pipe C-type beam pyrocondensation forming method includes following operation:
(1) two ends of pipe are made conical tube, and small end are outside by equivalent undergauge: after the two ends intermediate frequency heating of seamless pipe；
(2) variable undergauge: on the basis of operation (1), after the conical tube at pipe two ends is adopted intermediate frequency heating, the conical tube often held is made has the two sections of continuous conical tubes not waiting cone angle；
(3) the mid portion side of pushing away processing: adopt the side's of pushing away machine to force to be rolled into square tube by the round tube of mid portion；
(4) two side pressure sides: two ends are respectively provided with not wait cone angle two sections of conical tubes be pressed into have not wait cone angle two sections of cross sections be the pipe of rectangle；
(5) integrally bending molding: whole pipe is pressed into C-type beam body.
Preferred above-mentioned variable cross-section square type pipe C-type beam pyrocondensation forming method includes following operation:
(1) equivalent undergauge: after the two ends intermediate frequency heating of seamless pipe, adopts necking die on extrusion equipment, the two ends of pipe is made conical tube, and small end is outside；
(2) variable undergauge: on the basis of operation (1), adopts the conical tube at pipe two ends intermediate frequency heating, and adopts necking die on extrusion equipment, made by the conical tube often held and have the two sections of continuous conical tubes not waiting cone angle；
(3) the mid portion side of pushing away processing: adopt the side's of pushing away machine to force to be rolled into square tube by the round tube of mid portion；
(4) two side pressure sides: on oil pressure unit adopt mould, two ends are respectively provided with not wait cone angle two sections of conical tubes be pressed into have not wait cone angle two sections of cross sections be the pipe of rectangle；
(5) integrally bending molding: adopt mould on oil pressure unit, whole pipe is pressed into C-type beam body.
In above-mentioned operation (1), after equivalent undergauge, the cone angle of conical tube is 1.5-4.
In above-mentioned operation (1), it is preferable that after equivalent undergauge, the cone angle of conical tube is 2.2.
In above-mentioned operation (2), often cone angle respectively 1.5-4 of two sections of conical tubes in end conical tube.
In above-mentioned operation (2), it is preferable that the often cone angle respectively 1.7 and 3.5 of two sections of conical tubes in end conical tube.
In above-mentioned operation (1), by the two ends intermediate frequency heating of seamless pipe to 900-980 DEG C.
In above-mentioned operation (2), adopt intermediate frequency heating to 900-980 DEG C the conical tube at pipe two ends.
Above-mentioned seamless pipe is seamless steel pipe, and its thickness is 6-7mm.
The beneficial effect of technical solution of the present invention:
1, operation is few, and all process steps all adopts equipment to complete, it is not necessary to manually cut, dimensionally stable；
2, mach clout is few, and the equipment and the time that take are few, and stock utilization is high；
3, production efficiency is high, can realize procedure, mass production；
4, owing to the course of processing does not have welding sequence, so not having weld defect, quality is prone to ensure, quality stability is high；
5, without ultrasonic examination inspection；
6, owing to C-type beam body adopts seamless high tensile steel tube, rigidity is big, and intensity is high, and material can be thinning, original 9mm reduce to 6-7mm, reduces deadweight and reaches 30%, and after entrucking, carriage tare weight is light, and speed-raising is fast, and fuel economy is poor, and carbon emission amount is few.
The present invention is reasonable in design, simple in construction, easy to make, and cheap for manufacturing cost, is suitable for producing in enormous quantities.
Accompanying drawing explanation
Fig. 1 (a) in the specific embodiment of the invention C-type beam body look up structural representation.
Fig. 1 (b) is the main TV structure schematic diagram of C-type beam body in the specific embodiment of the invention.
Fig. 1 (c) is A-A sectional view in Fig. 1 (b).
Fig. 2 is the process chart of specific embodiment of the invention moderate undergauge.
Fig. 3 is the process chart of variable undergauge in the specific embodiment of the invention.
Fig. 4 is the process chart of the middle side of pushing away in the specific embodiment of the invention.
Fig. 5 is the process chart of two side pressure sides in the specific embodiment of the invention.
Fig. 6 is the process chart of integrally bending molding in the specific embodiment of the invention.
Detailed description of the invention
For the technical characterstic that this programme is described can be known, below by detailed description of the invention, and in conjunction with its accompanying drawing, this programme is illustrated.
A kind of variable cross-section square type pipe C-type beam pyrocondensation forming method, it includes following operation:
(1) equivalent undergauge: by the two ends intermediate frequency heating of seamless pipe to 900-980 DEG C, preferably this seamless pipe adopts seamless steel pipe, its thickness is 6-7mm, extrusion equipment adopts necking die carry out equivalent undergauge, the two ends of pipe are made conical tube, and the small end of conical tube is outside, the conical tube at two ends is respectively provided with an equal cone angle, after equivalent undergauge, the cone angle of conical tube is 1.5-4, it is preferable that after equivalent undergauge, the cone angle of conical tube is 2.2, whole pipe profile such as spindle after undergauge；
(2) variable undergauge: on the basis of operation (1), adopt intermediate frequency heating to 900-980 DEG C the conical tube at pipe two ends, and adopt necking die to carry out variable undergauge on extrusion equipment, the conical tube often held is made there are the two sections of continuous conical tubes not waiting cone angle, namely the conical tube at two ends includes two sections of conical tubes respectively, and the cone angle of two sections of conical tubes is unequal, often cone angle respectively 1.5-4 of two sections of conical tubes in end conical tube, it is preferable that the often cone angle of two sections of conical tubes in end conical tube respectively 1.7 and 3.5.
(3) the mid portion side of pushing away processing: adopt the side's of pushing away machine to force to be rolled into square tube by the round tube of mid portion, pipe after operation (2) molding is placed on the conveyer belt of the side's of pushing away machine, it is fed forward, the mid portion of pipe is pushed into square processing, form middle part cross sectional shape and meet the square of drawing requirement, wherein, the side's of pushing away machine described in includes, along the symmetrically arranged roller of upper and lower, left and right four direction, forcing to be rolled into square tube by the round tube (or other shape) internal by it by four groups of rollers；
(4) two side pressure sides: on oil pressure unit adopt mould, two ends are respectively provided with not wait cone angle two sections of conical tubes be pressed into have not wait cone angle two sections of cross sections be the pipe of rectangle；
(5) integrally bending molding: adopt mould on oil pressure unit, has whole and does not wait the square tube compacting of cone angle to bend to the C-type beam body with certain curve.
First, seamless pipe blank material is placed on the work support in extrusion equipment, this extrusion equipment adopts both-end extruder, and its model is SDJYJ320, and power is 320kw, quantity is one, the position of Guan Bi intermediate frequency furnace, the model of this intermediate frequency furnace is ZPL800, and power is 390kw, quantity is two so that the two ends of blank material are in the scope of intermediate frequency heating；Opening intermediate frequency furnace, heating, to 900-980 DEG C, adjusts work support position, and the equivalent stem reducing mould on alignment extruder extrudes, and the two ends of seamless pipe are carried out equivalent undergauge by the mould on extruder, and two ends form conical tube, and whole pipe profile is spindle.After equivalent undergauge, again workpiece is carried out intermediate frequency heating, and heat to 900-980 DEG C, adjustment extruder appts (both-end extruder, model is SDJYJ320, and power is 320kw, quantity is one) the position of support, the variable stem reducing mould of alignment extruder extrudes, and completes variable undergauge, and two ends form the conical tube of varied angle respectively.By on the conveyer belt before the workpiece transport after undergauge to the side's of pushing away machine, the model of the side's of pushing away machine is TFJ37, and power is 37kw, adjusts the side's of pushing away machine roller size and spacing, starts equipment, complete the side's of pushing away operation of mid portion.Owing to both ends are thinner than middle, part big for mid diameter can only be pushed into square by the centre side of pushing away operation, with hydraulic press and particular manufacturing craft, the position that two ends are thinner need to be carried out pressure side, guarantee global sections shape, this hydraulic press adopts frame type hydraulic press, its model is YK27-2000, and power is 225kw.Again through frame type hydraulic press (its model is YK27-2000, and power is 225kw) and special unitary mould to workpiece integrally bending, reach the size and dimension of drawing requirement.
The present invention can pass through without the technical characteristic described or adopt existing techniques in realizing; do not repeat them here; certainly; described above is not limitation of the present invention; the present invention is also not limited to above-mentioned embodiment; the change made in the essential scope of the present invention of those of ordinary skill in the art, remodeling, interpolation or replacement, also should belong to protection scope of the present invention.
Claims (9)
1. a variable cross-section square type pipe C-type beam pyrocondensation forming method, is characterized in that: it includes following operation:
(1) two ends of pipe are made conical tube, and small end are outside by equivalent undergauge: after the two ends intermediate frequency heating of seamless pipe；
(2) variable undergauge: on the basis of operation (1), after the conical tube at pipe two ends is adopted intermediate frequency heating, the conical tube often held is made has the two sections of continuous conical tubes not waiting cone angle；
(3) the mid portion side of pushing away processing: adopt the side's of pushing away machine to force to be rolled into square tube by the round tube of mid portion；
(4) two side pressure sides: two ends are respectively provided with not wait cone angle two sections of conical tubes be pressed into have not wait cone angle two sections of cross sections be the pipe of rectangle；
(5) integrally bending molding: whole pipe is pressed into C-type beam body.
2. variable cross-section square type pipe C-type beam pyrocondensation forming method according to claim 1, is characterized in that: it includes following operation:
(1) equivalent undergauge: after the two ends intermediate frequency heating of seamless pipe, adopts necking die on extrusion equipment, the two ends of pipe is made conical tube, and small end is outside；
(2) variable undergauge: on the basis of operation (1), adopts the conical tube at pipe two ends intermediate frequency heating, and adopts necking die on extrusion equipment, made by the conical tube often held and have the two sections of continuous conical tubes not waiting cone angle；
(3) the mid portion side of pushing away processing: adopt the side's of pushing away machine to force to be rolled into square tube by the round tube of mid portion；
(4) two side pressure sides: on oil pressure unit adopt mould, two ends are respectively provided with not wait cone angle two sections of conical tubes be pressed into have not wait cone angle two sections of cross sections be the pipe of rectangle；
(5) integrally bending molding: adopt mould on oil pressure unit, whole pipe is pressed into C-type beam body.
3. variable cross-section square type pipe C-type beam pyrocondensation forming method according to claim 1 and 2, is characterized in that: in described operation (1), and after equivalent undergauge, the cone angle of conical tube is 1.5-4.
4. variable cross-section square type pipe C-type beam pyrocondensation forming method according to claim 3, is characterized in that: in described operation (1), and after equivalent undergauge, the cone angle of conical tube is 2.2.
5. variable cross-section square type pipe C-type beam pyrocondensation forming method according to claim 3, is characterized in that: in described operation (2), often cone angle respectively 1.5-4 of two sections of conical tubes in end conical tube.
6. variable cross-section square type pipe C-type beam pyrocondensation forming method according to claim 5, is characterized in that: in described operation (2), often the cone angle respectively 1.7 and 3.5 of two sections of conical tubes in end conical tube.
7. variable cross-section square type pipe C-type beam pyrocondensation forming method according to claim 5, is characterized in that: in described operation (1), by the two ends intermediate frequency heating of seamless pipe to 900-980 DEG C.
8. variable cross-section square type pipe C-type beam pyrocondensation forming method according to claim 7, is characterized in that: in described operation (2), adopts intermediate frequency heating to 900-980 DEG C the conical tube at pipe two ends.
9. variable cross-section square type pipe C-type beam pyrocondensation forming method according to claim 8, is characterized in that: described seamless pipe is seamless steel pipe, and its thickness is 6-7mm.
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| CN201510143190.7A CN104759486B (en) | 2015-03-30 | 2015-03-30 | A kind of variable cross-section square type pipe C-type beam pyrocondensation forming method |
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| CN201510143190.7A CN104759486B (en) | 2015-03-30 | 2015-03-30 | A kind of variable cross-section square type pipe C-type beam pyrocondensation forming method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106975704B (en) * | 2017-03-10 | 2018-11-06 | 佛山市恩成五金实业有限公司 | A kind of processing technology of jardiniere foot tube |
| CN106881568B (en) * | 2017-03-10 | 2019-12-03 | 佛山市恩成五金实业有限公司 | A kind of processing technology of complicated abnormal shape pipe |
| CN106734334A (en) * | 2017-03-10 | 2017-05-31 | 佛山市恩成五金实业有限公司 | A kind of processing technology of special-shaped stainless steel tube |
| CN106964718B (en) * | 2017-03-10 | 2018-10-19 | 佛山市恩成五金实业有限公司 | A kind of processing technology of S-shaped catch pipe |
| CN111922118B (en) * | 2020-09-27 | 2021-02-02 | 中国航空制造技术研究院 | Method for manufacturing variable cross-section bent cylinder |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07328715A (en) * | 1994-06-06 | 1995-12-19 | Kawasaki Steel Corp | Manufacture of square steel pipe |
| JP3940279B2 (en) * | 2001-09-19 | 2007-07-04 | 三菱自動車エンジニアリング株式会社 | Power unit mounting device |
| CN102717834A (en) * | 2012-06-20 | 2012-10-10 | 上汽通用五菱汽车股份有限公司 | Mounting and supporting device for automobiles |
-
2015
- 2015-03-30 CN CN201510143190.7A patent/CN104759486B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07328715A (en) * | 1994-06-06 | 1995-12-19 | Kawasaki Steel Corp | Manufacture of square steel pipe |
| JP3940279B2 (en) * | 2001-09-19 | 2007-07-04 | 三菱自動車エンジニアリング株式会社 | Power unit mounting device |
| CN102717834A (en) * | 2012-06-20 | 2012-10-10 | 上汽通用五菱汽车股份有限公司 | Mounting and supporting device for automobiles |
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