CN106624618A - Composite process based on self-resistance heating plate connection and gas bulging forming - Google Patents

Composite process based on self-resistance heating plate connection and gas bulging forming Download PDF

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Publication number
CN106624618A
CN106624618A CN201610953224.3A CN201610953224A CN106624618A CN 106624618 A CN106624618 A CN 106624618A CN 201610953224 A CN201610953224 A CN 201610953224A CN 106624618 A CN106624618 A CN 106624618A
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China
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blank
electrode
gas
resistance heating
sheet material
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CN201610953224.3A
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Chinese (zh)
Inventor
刘洪伟
赵洪运
周威佳
初冠南
姚圣杰
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Harbin Institute of Technology Weihai
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Harbin Institute of Technology Weihai
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Priority to CN201610953224.3A priority Critical patent/CN106624618A/en
Publication of CN106624618A publication Critical patent/CN106624618A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23PMETAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D26/00Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/02Shaping 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
    • B21D26/021Deforming sheet bodies
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K11/00Resistance welding; Severing by resistance heating
    • B23K11/02Pressure butt welding

Abstract

The invention discloses a composite process based on self-resistance heating plate connection and gas bulging forming. The composite process comprises the steps that welding and edge sealing of a blank A and a blank B are achieved by means of a resistance welding method; a gas channel is reserved between the blank A and the blank B; the blank A and the blank B are put into a mold, the power source connecting manner is changed, and the blank A and the blank B are heated to the required temperature range of forming through the resistance of the metal plates; and inert gas with the pressure P is introduced through the gas channel, and gas pressure forming of hollow pieces of the metal plates is completed under the effect of the gas pressure. According to the composite process based on self-resistance heating plate connection and gas bulging forming, a traditional box type furnace whole heating is replaced with the self-resistance heating manner, and the composite process has the beneficial effects that the heating efficiency is high, the energy consumption is small, and blank oxidization is reduced; and furthermore, the operability is high, plate connection and heating can be achieved just by changing a current loop and controlling the magnitude of the current, the design and manufacturing of corresponding technological equipment are reduced, and industrialization is facilitated.

Description

One kind is based on from resistance heating sheet material connection and gas expansion forming combination process
Technical field
The present invention relates to a kind of implementation method of heat-punch member, more particularly to it is a kind of based on from resistance heating sheet material connection and gas It is expanded into shape combination process.
Background technology
Multi-layer hollow constitutional detail has the advantages that lightweight, bearing capacity is high and makes full use of material, in automobile, building And the field such as Aero-Space has a wide range of applications demand.Because hollow part cannot be processed with traditional impact style, Generally assembled together using multiple stamping parts Jing machineries or metallurgy, so as to causing complex process, efficiency low and needing spy Different technological equipment.
Super modeling diffusion connection is a kind of shaping and the interconnection technique of efficient Near net shape, can process multi-layer hollow knot Structure.Shaping while complete some positions of part diffusion connection, but due to superplasticforming and diffusion connection need it is higher Temperature and diffusion time, only extensively apply in the processing of some key components and parts of aerospace field, be not suitable for large quantities of The part processing of amount.And the forming temperature of superplastic air bulge is higher, device dependence strong, add that equipment volume is huge and cost Costliness, thus greatly limit application of the people to sheet material superplastic air bulge.
The content of the invention
Weak point in order to solve above-mentioned technical problem, the invention provides a kind of based on from resistance heating sheet material connection With gas expansion forming combination process.
In order to solve above-mentioned technical problem, the technical solution used in the present invention is:One kind is based on from resistance heating sheet material connection With gas expansion forming combination process, comprise the following steps:
A, basis shape the geomery and performance requirement of part, and sheet metal is prepared into into corresponding size and shape Blank A and blank B;
B, blank A and blank B are arranged above and below and are coincided together, blank A is located at the top of blank B;Then top is passed through Electrode and lower electrode compress blank A and blank B;Upper electrode is located at the top of blank A, is divided into electrode I and electrode II;Electricity Pole I and electrode II are respectively positioned at the left end and right-hand member of blank A;Electrode I is connected with the positive level of the first power supply, and electrode II is electric with second The positive level connection in source;
Lower electrode is located at the lower section of blank B, is divided into electrode III and electrode IV;Electrode III, electrode IV respectively with electrode I, Electrode II is correspondingly arranged, positioned at the left end and right-hand member of blank B;Electrode III is connected with the negative level of the first power supply, electrode IV and second The negative level connection of power supply;
Gas passage is left between blank A and blank B;
C, it is passed through electric current I1 and pressure F is applied to upper electrode and lower electrode, realizes the electric resistance welding of blank A and blank B Edge sealing is connect, the edge sealing between blank A and blank B is completed;
D, after the edge sealing for completing blank A and blank B, blank A and blank B are put in mould, and change the first power supply With the connected mode of second source, electrode I, electrode II are connected respectively to into the positive pole of the first power supply, negative pole;Electrode III, electrode IV is connected respectively to the positive pole of second source, negative pole;
Electric current I2 is then passed to, the temperature needed for being heated to shape by blank A and blank B by the resistance of sheet metal itself Degree scope;
E, after temperature reaches forming requirements, Jing gas passages charged pressure for P inert gas, in the work of gas pressure The gas pressure compacting of sheet metal hollow is completed with;
After the completion of f, shaping, air pressure is unloaded, two power supplys are also shut off, after making drip molding be cooled to room temperature in mould Take out, be finally completed the hot gas expansion forming of the tight sheet metal hollow of interface cohesion.
The material of mould is insulating ceramics, so as to avoid that electric current in sheet material is formed into short circuit from mould in resistance heating process, Farthest ensure that plate temperature is uniform in heating process.
Blank A and blank B can be same metal sheet material, or needed for forming temperature and resistance of deformation be close to it is different Plant sheet metal.
First power supply and second source are pulse current power supply, 0~10000Hz of pulse frequency, 0~100000A of amplitude, 0~1000000A of current range, 0~36V of voltage range.The size of electric current I1 be 1000~1000000A, pressure F be 50~ The size of 10000N, electric current I2 is 100~100000A, and inert gas is nitrogen or argon gas, and pressure P is 0~40MPa.
Upper electrode and lower electrode are the copper electrode of low-resistivity.
Gas passage can be formed by the stainless steel tube being arranged between blank A and blank B, stainless steel tube and blank A and base Material B is brought into close contact.
The invention has the advantages that:
1) replace traditional batch-type furnace integrally to heat using from resistance mode of heating, with the efficiency of heating surface it is high, energy consumption is little, reduce The advantages of blank is aoxidized.
2) it is workable, it is only necessary to change the size of current loop and control electric current, it becomes possible to realize sheet material connection with Heating, reduces the design and manufacture of corresponding technological equipment, it is easy to industrialize.
Description of the drawings
With reference to the accompanying drawings and detailed description the present invention is described in further detail.
Fig. 1 is the enforcement schematic diagram of this resistance welding edge sealing.
Fig. 2 is sheet metal of the present invention from the enforcement schematic diagram for hindering heating.
Fig. 3 is the enforcement schematic diagram of hot gas expansion forming of the invention.
Fig. 4 is the sectional view of the profiled member that the present invention is finally completed.
In figure:1st, the first power supply;2nd, second source;3rd, blank A;4th, blank B;5th, gas passage;6th, mould.
Specific embodiment
As Figure 1-Figure 4, the present invention specifically includes following steps:
A, according to the geomery and performance requirement of preprocessing formation of parts, sheet metal is prepared into into corresponding size and shape The blank A and blank B of shape;
B, blank A and blank B are arranged above and below and are coincided together, blank A is located at the top of blank B;Then top is passed through Electrode and lower electrode compress blank A and blank B;Upper electrode is located at the top of blank A, is divided into electrode I and electrode II;Electricity Pole I and electrode II are respectively positioned at the left end and right-hand member of blank A;Electrode I is connected with the positive level of the first power supply 1, electrode II and second The positive level connection of power supply 2;
Lower electrode is located at the lower section of blank B, is divided into electrode III and electrode IV;Electrode III, electrode IV respectively with electrode I, Electrode II is correspondingly arranged, positioned at the left end and right-hand member of blank B;Electrode III is connected with the negative level of the first power supply 1, electrode IV and second The negative level connection of power supply 2;
Gas passage 5 is left between blank A and blank B;
C, it is passed through electric current I1 and pressure F is applied to upper electrode and lower electrode, realizes the electric resistance welding of blank A and blank B Edge sealing is connect, the edge sealing between blank A and blank B is completed;
D, after the edge sealing for completing blank A and blank B, blank A and blank B are put in mould, and change the first power supply 1 With the connected mode of second source 2, electrode I, electrode II are connected respectively to into positive pole, the negative pole of the first power supply 1;Electrode III, electricity Pole IV is connected respectively to the positive pole of second source 2, negative pole;
Electric current I2 is then passed to, the temperature needed for being heated to shape by blank A and blank B by the resistance of sheet metal itself Degree scope;
E, after temperature reaches forming requirements, Jing gas passages charged pressure for P inert gas, in the work of gas pressure The gas pressure compacting of sheet metal hollow is completed with;
After the completion of f, shaping, air pressure is unloaded, two power supplys are also shut off, after making drip molding be cooled to room temperature in mould Take out, be finally completed the hot gas expansion forming of the tight sheet metal hollow of interface cohesion.
The material of inventive die 6 is insulating ceramic materials, will be electric in sheet material so as to avoid oneself from hindering mould in heating process Stream forms short circuit, farthest ensures that plate temperature is uniform in heating process.Also, blank A and blank B can be gold of the same race Category sheet material, or the dissimilar metal sheet that required forming temperature is close to resistance of deformation.
First power supply 1 and second source 2 are pulse current power supply, 0~10000Hz of pulse frequency, and amplitude 0~ 100000A, 0~1000000A of current range, 0~36V of voltage range.The size of electric current I1 is 1000~1000000A, pressure F For 50~10000N, the size of electric current I2 is 100~100000A, and inert gas is nitrogen or argon gas, and pressure P is 0~40MPa.
Upper electrode and lower electrode are the copper electrode of low-resistivity.
Gas passage 5 can be formed by the stainless steel tube being arranged between blank A and blank B, stainless steel tube and blank A and base Material B is brought into close contact.
Example 1 adopts aluminium alloy sheet material of the same race
A, respectively two pieces of the rectangular plate that thickness is cut into 150mm × 120mm for the aluminum alloy plate materials of 1.5mm, aluminium Sheet alloy A and aluminum alloy plate materials B;
B, the aluminum alloy plate materials A coincided with the upper and lower using upper electrode and lower electrode compression and aluminum alloy plate materials B, and with directly Footpath for 1.5mm stainless steel tube as gas passage 5, electrode I is connected with the positive level of the first power supply 1, electrode II is electric with second The positive level connection in source 2, electrode III is connected with the negative level of the first power supply 1, and electrode IV is connected with the negative level of second source 2;On the upside of i.e. Aluminum alloy plate materials A connects positive pole, downside aluminum alloy plate materials B connection negative poles;
C, electric current I1 is then passed to, its size is 9000-15000A, and applies the normal pressure of 1000-3000N to electrode, Complete being tightly connected for the surrounding border of (aluminum alloy plate materials A and aluminum alloy plate materials B) between sheet material.
D, after the edge sealing for completing aluminum alloy plate materials A and aluminum alloy plate materials B, aluminum alloy plate materials A and aluminum alloy plate materials B are put In entering ceramic material mould 6, and change the connected mode of the first power supply 1 and second source 2, electrode I, electrode II are connected respectively To positive pole, the negative pole of the first power supply 1;Electrode III, electrode IV are connected respectively to the positive pole of second source 2, negative pole;
It is 2000-5000A to then pass to electric current I2, closes aluminum alloy plate materials A and aluminium by the resistance of sheet metal itself Golden plate material B is heated to be heated to 530 DEG C in 20 seconds, is incubated 60 seconds;
E, by the charged pressure of gas passage 5 for 0-15MPa nitrogen, complete in the presence of gas pressure gradually rises Highly it is 20mm, the gas pressure compacting of the rectangular box part of 100 × 80mm, box body part is fully fitted insulating ceramics mould;
After the completion of f, shaping, air pressure is unloaded, also shut off two power supplys (i.e. the first power supply 1 and second source 2), made into Shape part takes out after being cooled to room temperature in mould 6, and the hot gas for being finally completed the close aluminum alloy plate materials hollow of interface cohesion is swollen Shaping.
Example 2 is using aluminium alloy and magnesium alloy xenogenesis sheet material
Aluminum alloy plate materials and thickness of the thickness for 1.2mm are cut into into respectively 150 × 120 for the magnesium alloy plate of 1.5mm Two pieces of rectangular plate, respectively aluminum alloy plate materials A and magnesium alloy plate B;
B, the aluminum alloy plate materials A coincided with the upper and lower using upper electrode and lower electrode compression and magnesium alloy plate B, and with directly Footpath for 1.5mm stainless steel tube as gas passage 5, electrode I is connected with the positive level of the first power supply 1, electrode II is electric with second The positive level connection in source 2, electrode III is connected with the negative level of the first power supply 1, and electrode IV is connected with the negative level of second source 2;On the upside of i.e. Aluminum alloy plate materials A connects positive pole, downside magnesium alloy plate B connection negative poles;
A, electric current I1 is then passed to for 7000-18000A, and the normal pressure of 2000-4000N is applied to electrode, complete sheet material Between the surrounding border of (aluminum alloy plate materials A and magnesium alloy plate B) be tightly connected.
B, after the edge sealing for completing aluminum alloy plate materials A and magnesium alloy plate B, aluminum alloy plate materials A and magnesium alloy plate B are put In entering ceramic material mould, and change the connected mode of the first power supply and second source, electrode I, electrode II are connected respectively to The positive pole of the first power supply, negative pole;Electrode III, electrode IV are connected respectively to the positive pole of second source, negative pole;
It is 2000-5000A to then pass to electric current I2, closes aluminum alloy plate materials A and magnesium by the resistance of sheet metal itself Golden plate material B is heated to be heated to 580 DEG C in 20 seconds, is incubated 60 seconds;
E, by gas passage charged pressure for 0-20MPa argon gas, it is complete in the presence of the pressure that gas gradually rises It is 20mm into height, the gas pressure compacting of the rectangular box part of 100 × 80mm, box body part is fully fitted insulating ceramics mould;
After the completion of f, shaping, air pressure is unloaded, two power supplys are also shut off, after making drip molding be cooled to room temperature in mould Take out, be finally completed the hot gas expansion forming of the close aluminum alloy plate materials of interface cohesion and the hollow of magnesium alloy plate.
Electric resistance welding is connected the present invention means for replacing diffusion connection to connect as of the same race or xenogenesis sheet material, while leaning on and expansion The quick heating that the same device of connection realizes sheet material is dissipated, the forming efficiency of sheet material hollow is significantly shortened.Add in once heat The hollow of multilayer is shaped during work, part and frock quantity will be considerably reduced, shorten the manufacturing cycle, reduce system Cause this;And provide the bigger free degree to improve structural bearing efficiency for designer.
Above-mentioned embodiment is not limitation of the present invention, and the present invention is also not limited to the example above, this technology neck Change, remodeling, addition or replacement that the technical staff in domain is made in the range of technical scheme, also belong to this Bright protection domain.

Claims (8)

1. a kind of based on from resistance heating sheet material connection and gas expansion forming combination process, comprise the following steps:
A, according to the geomery and performance requirement of preprocessing formation of parts, sheet metal is prepared into into corresponding size and shape Blank A (3) and blank B (4);
B, blank A (3) and blank B (4) are arranged above and below and are coincided together, tops of the blank A (3) positioned at blank B (4);Then Blank A (3) and blank B (4) is compressed by upper electrode and lower electrode;The upper electrode is located at the upper of blank A (3) Side, is divided into electrode I and electrode II;The electrode I and electrode II are respectively positioned at the left end and right-hand member of blank A (3);Electrode I and The positive level connection of one power supply (1), electrode II is connected with the positive level of second source (2);
The lower electrode is located at the lower section of blank B (4), is divided into electrode III and electrode IV;The electrode III, electrode IV respectively with Electrode I, electrode II are correspondingly arranged, positioned at the left end and right-hand member of blank B (4);Electrode III is connected with the negative level of the first power supply (1), Electrode IV is connected with the negative level of second source (2);
Gas passage (5) is left between the blank A and blank B;
C, it is passed through electric current I1 and pressure F is applied to upper electrode and lower electrode, realizes the resistance of blank A (3) and blank B (4) Welding edge sealing, completes the edge sealing between blank A (3) and blank B (4);
D, after the edge sealing for completing blank A and blank B, during blank A (3) and blank B (4) are put into into mould, and it is electric to change first Source (1) and the connected mode of second source (2), by electrode I, electrode II positive pole of the first power supply (1), negative pole are connected respectively to; Electrode III, electrode IV are connected respectively to the positive pole of second source (2), negative pole;
Electric current I2 is then passed to, needed for being heated to shape by blank A (3) and blank B (4) by the resistance of sheet metal itself Temperature range;
E, after temperature reaches forming requirements, Jing gas passages (5) charged pressure for P inert gas, in the work of gas pressure The gas pressure compacting of sheet metal hollow is completed with;
After the completion of f, shaping, air pressure is unloaded, also shut off two power supplys, after making drip molding be cooled to room temperature in mould (6) Take out, be finally completed the hot gas expansion forming of the tight sheet metal hollow of interface cohesion.
2. according to claim 1 based on from resistance heating sheet material connection and gas expansion forming combination process, it is characterised in that:Institute The material for stating mould (6) is insulating ceramic materials.
3. according to claim 1 based on from resistance heating sheet material connection and gas expansion forming combination process, it is characterised in that:Institute It can be same metal sheet material to state blank A (3) and blank B (4), or needed for forming temperature and resistance of deformation be close to it is different Plant sheet metal.
4. according to claim 1 based on from resistance heating sheet material connection and gas expansion forming combination process, it is characterised in that:Institute State the first power supply (1) and second source (2) be pulse current power supply, 0~10000Hz of pulse frequency, 0~100000A of amplitude, 0~1000000A of current range, 0~36V of voltage range.
5. according to claim 1 based on from resistance heating sheet material connection and gas expansion forming combination process, it is characterised in that:Institute The size for stating electric current I1 is 1000~1000000A, and pressure F is 50~10000N, and the size of electric current I2 is 100~100000A, Inert gas pressure P is 0~40MPa.
6. according to claim 1 based on from resistance heating sheet material connection and gas expansion forming combination process, it is characterised in that:Institute State upper electrode and lower electrode is the copper electrode of low-resistivity.
7., according to claim 1 or 5 based on from resistance heating sheet material connection and gas expansion forming combination process, its feature exists In:The inert gas is nitrogen or argon gas.
8. according to claim 1 based on from resistance heating sheet material connection and gas expansion forming combination process, it is characterised in that:Institute The stainless steel tube that gas passage (5) is stated to be arranged between blank A (3) and blank B (4) is formed, stainless steel tube and blank A (3) It is brought into close contact with blank B (4).
CN201610953224.3A 2016-10-27 2016-10-27 Composite process based on self-resistance heating plate connection and gas bulging forming Pending CN106624618A (en)

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CN108480924A (en) * 2018-03-19 2018-09-04 成都飞机工业(集团)有限责任公司 A kind of forming method and molding machine of double panel structure part
CN109175058A (en) * 2018-08-20 2019-01-11 哈尔滨工业大学 A kind of plate semisolid air pressure thixotropic forming method
CN109201838A (en) * 2017-11-24 2019-01-15 中国航空制造技术研究院 A method of improving superplastic forming construction material performance
CN109807247A (en) * 2018-12-14 2019-05-28 宁波信泰机械有限公司 A kind of battery case aluminium alloy inflation type water cooling board production technology
CN111941093A (en) * 2020-08-04 2020-11-17 韦民华 Production process of blow-molded stainless steel chair
CN112427556A (en) * 2020-09-28 2021-03-02 北京卫星制造厂有限公司 Self-resistance heating forming device and method for large metal plate
CN112719081A (en) * 2020-12-25 2021-04-30 南阳师范学院 Current-assisted SPF/DB integrated forming process
CN113351725A (en) * 2021-04-30 2021-09-07 北京科技大学 Metal material gas bulging forming method
CN113878009A (en) * 2020-07-03 2022-01-04 上海飞机制造有限公司 Titanium alloy plate processing method
CN114713699A (en) * 2022-06-09 2022-07-08 太原理工大学 Metal bipolar plate gas expansion forming device and process based on pulse current assistance

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109201838A (en) * 2017-11-24 2019-01-15 中国航空制造技术研究院 A method of improving superplastic forming construction material performance
CN108480924A (en) * 2018-03-19 2018-09-04 成都飞机工业(集团)有限责任公司 A kind of forming method and molding machine of double panel structure part
CN109175058A (en) * 2018-08-20 2019-01-11 哈尔滨工业大学 A kind of plate semisolid air pressure thixotropic forming method
CN109807247A (en) * 2018-12-14 2019-05-28 宁波信泰机械有限公司 A kind of battery case aluminium alloy inflation type water cooling board production technology
CN113878009A (en) * 2020-07-03 2022-01-04 上海飞机制造有限公司 Titanium alloy plate processing method
CN111941093A (en) * 2020-08-04 2020-11-17 韦民华 Production process of blow-molded stainless steel chair
CN112427556A (en) * 2020-09-28 2021-03-02 北京卫星制造厂有限公司 Self-resistance heating forming device and method for large metal plate
CN112719081A (en) * 2020-12-25 2021-04-30 南阳师范学院 Current-assisted SPF/DB integrated forming process
CN113351725A (en) * 2021-04-30 2021-09-07 北京科技大学 Metal material gas bulging forming method
CN114713699A (en) * 2022-06-09 2022-07-08 太原理工大学 Metal bipolar plate gas expansion forming device and process based on pulse current assistance

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