CN107824695A - A kind of manufacture craft of big L/D ratio thin-wall metal container blanks - Google Patents
A kind of manufacture craft of big L/D ratio thin-wall metal container blanks Download PDFInfo
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- CN107824695A CN107824695A CN201711034981.1A CN201711034981A CN107824695A CN 107824695 A CN107824695 A CN 107824695A CN 201711034981 A CN201711034981 A CN 201711034981A CN 107824695 A CN107824695 A CN 107824695A
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- Prior art keywords
- heat
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- metal container
- manufacturing process
- wall metal
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Classifications
-
- 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
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/18—Lubricating, e.g. lubricating tool and workpiece simultaneously
-
- 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
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/20—Deep-drawing
- B21D22/201—Work-pieces; preparation of the work-pieces, e.g. lubricating, coating
-
- 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
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/20—Deep-drawing
- B21D22/208—Deep-drawing by heating the blank or deep-drawing associated with heat treatment
-
- 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
- B21D31/00—Other methods for working sheet metal, metal tubes, metal profiles
-
- 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
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/16—Heating or cooling
-
- 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
- B21D51/00—Making hollow objects
- B21D51/16—Making hollow objects characterised by the use of the objects
- B21D51/18—Making hollow objects characterised by the use of the objects vessels, e.g. tubs, vats, tanks, sinks, or the like
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Forging (AREA)
Abstract
The invention discloses a kind of manufacturing process of big L/D ratio heigh pressure resisting thin-walled metal blank, prepares required material ingot first；Then the material ingot of preparation is heated using intermediate-frequency heating furnace；Forcing press is delivered to after the completion of heating carry out heat and play cake processing, heat, which is beaten after cake processing, to be delivered on mould the heat for scribbling water-based graphite breast device progress heat of extending and extend processing, and the deformation extent of extending of the heat after handling is 40 ~ 50%." backward extrusion " be decomposed into heat buys cake and heat is extended two steps progress in the technique, reduce the deflection that heat is extended, successfully can simply it be lubricated using water-based graphite breast as lubricant, it is free from environmental pollution, it is easy to operate, it is with a wide range of applications and good economic results in society.
Description
Technical field
The invention belongs to canister blank manufacturing technology field, and in particular to a kind of big L/D ratio thin-wall metal container hair
The manufacturing process of base, the manufacturing process of big L/D ratio heigh pressure resisting thin-walled canister blank.
Background technology
The industry such as radar station wave transmission anode and salvo bullet has big L/D ratio heigh pressure resisting thin-walled canister at home
It is widely used.The outstanding feature of such product is that wall is thin, and intensity is high, and its use environment is severe, high to performance requirement, such as exists
In task of the radar station for launching electromagnetic wave, it is desirable to which product bears high vacuum negative pressure at a high temperature of several Baidu to be opened
Split；When being shot for military products, product will bear high temperature and high pressure gas shock loading, and must not have cracking phenomena.Such high
Under loading condiction, it is desirable to which thin-wall product must have very high mechanical strength（Steel Rm ＞ 800MPa, copper Rm ＞ 600MPa）.
At present, to ensure the overall mechanical properties of such product, its manufacturing process generally uses overall punch forming technology.
But the technique there are following problem：（1）Because heating-up temperature height, deformation extent are big in product blank preparation process（Up to
80%）, burning-point and adhesive force to lubricating oil have higher requirement, and general common lubricating oil burning-point is low, poor adhesive force, applies
It can at once be burnt after smearing on mould, lubrication task can not be completed.Therefore, most of production at present be using burning-point it is high,
Viscosity big " cylinder oil+graphite " makees lubricating oil, and " cylinder oil+graphite " disclosure satisfy that the requirement of lubrication, but due to hot pressing temperature
Height is spent, cylinder oil meets high temperature after-combustion and produces black smoke pollution air, and combustion residue causes oil everywhere with the lubricating oil being scattered
It is mud, tacky and not easy to clean, serious pollution is caused to working environment；（2）The hot extrusion technique of blank is a kind of vertical
Backward extrusion technology process, i.e., metal flow direction and mold movement process in opposite direction, metal under extruding force effect
Prolonged friction can occur with die surface in deformation process, also just because of the presence of this microcosmic influence factors, just cause
High-flash, highly viscous lubricating oil must be used in molding process, demoulding task could be completed；（3）After hot pressing terminates, gas
Cylinder oil and graphite are attached to be difficult to remove, it is necessary to using special deep-etching acid carries out pickling, frosted is thrown on semi-products blank
Light technique could remove, and pickling and frosted glossing will also result in environmental pollution, be included in superseded backwardness technique by country
Row；
With the protrusion of environmental problem, the friendly lubricant of development environment and technical process turn into asking for urgent need solution in recent years
Topic.Water-based graphite breast is a kind of graphite emulsifying colloid, can be used for metal heat pressing to be stripped after being diluted with water, in recent years in multiple industries
It is used widely, but repeatedly tries out in the stamping field of big L/D ratio heigh pressure resisting thin-walled canister and do not obtain into
Work(.
The content of the invention
Solved the above problems to connect, the invention provides a kind of big L/D ratio thin-wall metal container blanks manufacturing process,
Forming process of the invention by changing big L/D ratio heigh pressure resisting thin-walled canister, completed using water-based graphite breast as lubricant
Demoulding task, the environment-friendly preparation for completing the thin-wall metal container blanks.
The present invention completes by the following technical programs
A kind of manufacturing process of big L/D ratio thin-wall metal container blanks, the technique comprise the following steps：
（1）Material ingot required for preparing；
（2）Using intermediate-frequency heating furnace to step（1）The material ingot prepared is heated；
（3）To step（2）Material ingot after heating carries out heat and plays cake processing；
（4）Water based mold release agent is smeared to the die surface of hot device of extending, smeared after completing, to step（3）The heat buys cake
Material ingot afterwards carries out heat and extended processing；
（5）By step（4）The heat is extended handled after product be directly heat-treated, surface polishing, examine, closed
Lattice product --- obtain described big L/D ratio thin-wall metal container blanks.
The manufacturing process of the big L/D ratio thin-wall metal container blanks, step（1）Described material ingot include copper alloy or
Mild steel；
Described copper alloy is made up of the raw material of following parts by weight：Cu 60 ~ 62.5%, Fe 0.3 ~ 0.6%, surplus Zn；
Described mild steel is made up of the raw material of following parts by weight：C 0.16 ~ 0.22%, Si 0.17 ~ 0.37%, Mn 0.35 ~
0.65%, surplus Fe.
The manufacturing process of the big L/D ratio thin-wall metal container blanks, step（2）When described pair of material ingot heats
Heating-up temperature is 850 ~ 1250 DEG C, is heated in intermediate frequency furnace and the temperature of material ingot is 850 ~ 1250（I.e. temperature is uniform, heat
Thoroughly, expect that each position of ingot has reached same temperature）, 15 ~ 20min is then incubated at such a temperature, after the completion of insulation
Carry out heat and play cake processing.
The manufacturing process of the big L/D ratio thin-wall metal container blanks, step（3）Described heat beats cake processing procedure：
Using forcing press, the material ingot after heating is carried out under conditions of pressure is 6MPa ~ 7MPa to be forced into the thickness for expecting ingot
For 25 ~ 30mm.
The manufacturing process of the big L/D ratio thin-wall metal container blanks, step（4）Described water based mold release agent is quality
The water-based graphite breast that concentration is 20 ~ 30%（When smearing water-based graphite breast, uniform one layer of the smearing of die surface for device of being extended in heat
Water-based graphite breast）；The deformation extent that heat is extended when deforming is 40 ~ 50%.
The manufacturing process of the big L/D ratio thin-wall metal container blanks, step（4）The mould of the device of being extended in heat
Surface smear water-based graphite breast applying amount be：After smearing water-based graphite breast, after its natural coagulation in the thickness of die surface
Spend for 0.05 ~ 0.1mm.
The manufacturing process of the big L/D ratio thin-wall metal container blanks, step（5）Described heat treatment is tempered for waste heat
Or immediate quenching, temper.
The manufacturing process of the big L/D ratio thin-wall metal container blanks, the temperature during temper are 580 ~ 650
DEG C, tempering time be 40 ~ 60min.
By analyzing original heat pressure forming process, its technical process causes the major reason of environmental pollution to exist
Temperature is high when hot pressing blank while deflection is very big, it is necessary to using high-flash, highly viscous " cylinder oil+graphite " as
Lubricant.Therefore to fundamentally solve the presence of the problem, then process is improved, reduces its hot compression deformation
Degree, it can be reduced to lubricating oil burning-point and the technical requirements of viscosity.The present invention causes the root of environmental pollution from original technique
Originally set out that its technique explore and improve, eliminate and seriously polluted to caused by environment.
Compared with prior art, the present invention has following positive beneficial effect
（1）" backward extrusion " in heat pressure forming process is decomposed into that heat buys cake and heat two steps of extending are entered by the present invention
OK, heat, which is beaten in cake technical process, completes most flow of metal, and there is no the presence of mould to be stripped during being somebody's turn to do,
Also without smearing lubricant；Heat extend metal in technical process deflection it is small and the mode of texturing of metal is also different from hot extrusion
Mode of texturing in pressing formation（There is long-time in the technique of prior art in forming process between blank and mould, rub over long distances
Wipe, and frictional force is very big, it is easy to which lubricating oil is wiped off.And during heat of the present invention is extended, between blank and mould
Fraction time, frictional distance and frictional force all very little by contrast, will not also wipe lubricating oil off, the time used is short, is advantageous to
Flow of metal）Be advantageous to flow of metal, can meet that the demoulding requires using water-based graphite breast releasing agent；
（2）Friction very little between metal and mould during heat of the present invention is extended, will not cause product and mould it
Between cutting-up, effectively increase the quality of die life and surface of metal product；
（3）The ingot casting heat that the present invention uses beats cake technique, and multiple products can unify to use the ingot casting of a dimensions as former
Material, reduce the input of casting crystallizer frock, substantially reduce production cost；
（4）In forming technology of the present invention, heat buys cake and does not need lubricating oil, the heat of the invention used extend during change
Shape amount is small, can successfully using water-based graphite breast as lubricant, simply lubricate, during this water-based graphite breast by
Vapor can be become after thermal evaporation, air will not be polluted；The water-based graphite breast lubricant of the blank surface attachment of preparation is water-soluble
Property, rinsed using running water and can remove, it is not necessary to carry out pickling, also without frosted buffer using the acid of severe corrosive
Skill.
Embodiment
The present invention is described in more details below by embodiment, but is not intended to limit the invention
Protection domain.
Embodiment 1
A kind of manufacturing process of big L/D ratio thin-wall metal container blanks, the technique comprise the following steps：
（1）Prepare a diameter of 150 ~ 250mm, thickness is 80 ~ 100mm copper alloy material ingot, and the composition of the copper alloy material ingot is as follows：
Cu 60 ~ 62.5%, Fe 0.3 ~ 0.6%, surplus Zn（The copper alloy material ingot prepared using conventional method）；
（2）Using intermediate-frequency heating furnace to step（1）The good material ingot prepared is heated, and heating-up temperature is 850 ± 10 DEG C, heating
In to stove and the temperature of material ingot stops heating when being 850 ± 10 DEG C, and enters pressure after being incubated 15 ~ 20min at such a temperature
Heat is carried out in machine and plays cake processing；Copper alloy material ingot after described heating enters forcing press, in the bar that pressure is 6 ± 0.5MPa
The thickness that part presses to material ingot is 25 ~ 30mm；
（3）The water-based graphite breast that mass concentration is 20% is smeared on the mould that heat extends device（Uniformly smearing, not holiday, smear
The thickness after natural coagulation is 0.05 ~ 0.1mm afterwards）, after the completion of smearing, by step（2）The copper alloy that the heat is beaten after cake
Material ingot, which is sent into heat and extended, to carry out heat in device and extends processing, and the temperature that heat is extended in processing procedure is 850 ± 10 DEG C（That is deformation temperature
Spend for 850 ± 10 DEG C）, the deformation extent during heat is extended is 40%.
（4）Heat is extended after processing, and copper alloy is placed in air and is cooled to room temperature, surface polishing, examines qualified produce
To big L/D ratio heigh pressure resisting thin-walled canister blank of the present invention.
Stock utilization during this is 100%, is lost without material；The yields of product reaches 98% during batch production
More than, blank Wall-Thickness Difference is not more than 0.2mm.The proof pressure of products obtained therefrom reaches 350 ± more than 10MPa.
Embodiment 2
A kind of manufacturing process of big L/D ratio heigh pressure resisting thin-walled canister blank, the technique comprise the following steps：
（1）Prepare a diameter of 150 ~ 250mm, thickness is 80 ~ 100mm mild steel material ingot, and the composition of the mild steel material ingot is as follows：
C 0.16 ~ 0.22%, Si 0.17 ~ 0.37%, Mn 0.35 ~ 0.65%, surplus Fe；
（2）Using intermediate-frequency heating furnace to step（1）Ready material ingot is heated, and heating-up temperature is 1250 ± 10 DEG C, heating
In to intermediate frequency furnace and material ingot temperature be 125 ± 10 DEG C, and at such a temperature be incubated 15 ~ 20min after enter forcing press in enter
Row heat plays cake processing；After mild steel material ingot after the heating enters forcing press, pressed under conditions of pressure is 7 ± 0.5MPa
Thickness to material ingot is 25 ~ 30mm；
（3）The water-based graphite breast that mass concentration is 30% is smeared on the mould that heat extends device（Uniformly smearing, not holiday, smear
The thickness after natural coagulation is 0.05 ~ 0.1mm afterwards）, after the completion of smearing, by step（2）The mild steel that the heat is beaten after cake
Material ingot, which is sent into heat and extended, to carry out heat in device and extends processing, and the temperature that heat is extended in processing procedure is 1250 ± 10 DEG C；The heat is drawn
It is 50% to stretch the deformation extent in processing procedure.
（4）Heat is extended after processing, and the mild steel after being extended to heat quenches in cold water, then in tempering furnace
Mild steel after quenching is heated into 600 DEG C and is incubated 50min at such a temperature carry out temper, after the completion of processing, right
Its surface is polished, and it is to obtain described big L/D ratio heigh pressure resisting thin-walled canister blank to examine qualified.
Therefore stock utilization is 100% during being somebody's turn to do；Yields reaches more than 98% during batch production, and blank Wall-Thickness Difference is not
More than 0.2mm.The proof pressure of products obtained therefrom reaches 350 ± more than 10MPa.
I.e. the present invention causes the basic reason of environmental pollution from former technique, solves original by the improvement to preparation technology
In preparation technology the problem of environmental pollution, complete real for the free of contamination high-volume of big L/D ratio thin-wall metal container blanks
Border produces；It is of the invention preferably to be merged with original technique, it is simple to operate and friendly to environment, the utilization rate of raw material is higher, has
It is widely applied prospect, there are good economic results in society.
Claims (8)
1. a kind of manufacturing process of big L/D ratio thin-wall metal container blanks, it is characterised in that the technique comprises the following steps：
（1）Material ingot required for preparing；
（2）Using intermediate-frequency heating furnace to step（1）The material ingot prepared is heated；
（3）To step（2）Material ingot after heating carries out heat and plays cake processing；
（4）Water based mold release agent is smeared to the mould of hot device of extending, smeared after completing, to step（3）The heat is beaten after cake
Material ingot carry out heat and extend processing；
（5）By step（4）The heat extend processing after product be directly heat-treated, surface polishing, examine, that is, obtain institute
The big L/D ratio heigh pressure resisting thin-walled canister blank stated.
2. the manufacturing process of big L/D ratio thin-wall metal container blanks according to claim 1, it is characterised in that step（1）
Described material ingot includes copper alloy or mild steel；
Described copper alloy is made up of the raw material of following parts by weight：Cu 60 ~ 62.5%, Fe 0.3 ~ 0.6%, surplus Zn；
Described mild steel is made up of the raw material of following parts by weight：C 0.16 ~ 0.22%, Si 0.17 ~ 0.37%, Mn 0.35 ~
0.65%, surplus Fe.
3. the manufacturing process of big L/D ratio thin-wall metal container blanks according to claim 1, it is characterised in that step（2）
Heating-up temperature when described pair of material ingot heats is 850 ~ 1250 DEG C, is incubated 15 ~ 20min after the completion of heating at such a temperature,
Then carry out heat and play cake processing.
4. the manufacturing process of big L/D ratio thin-wall metal container blanks according to claim 1, it is characterised in that step（3）
Described heat beats cake processing procedure：Using forcing press, to the material after heating under conditions of pressure is 6MPa ~ 7MPa
The thickness that ingot carries out being forced into material ingot is 25 ~ 30mm.
5. the manufacturing process of big L/D ratio thin-wall metal container blanks according to claim 1, it is characterised in that step（4）
Described water based mold release agent is the water-based graphite breast that mass concentration is 20 ~ 30%；Heat extend deformation when deformation extent for 40 ~
50%。
6. the manufacturing process of big L/D ratio thin-wall metal container blanks according to claim 1 or 5, it is characterised in that step
Suddenly（4）The described applying amount when smearing water-based graphite breast on mould is：Smear the thickness after water-based graphite breast natural coagulation
Spend for 0.05 ~ 0.1mm.
7. the manufacturing process of big L/D ratio thin-wall metal container blanks according to claim 1, it is characterised in that step
（5）Described heat treatment is afterheat normalizing or immediate quenching, temper.
8. the manufacturing process of big L/D ratio thin-wall metal container blanks according to claim 7, it is characterised in that described
Temper temperature is 580 ~ 650 DEG C, tempering time is 40 ~ 60min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711034981.1A CN107824695A (en) | 2017-10-30 | 2017-10-30 | A kind of manufacture craft of big L/D ratio thin-wall metal container blanks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711034981.1A CN107824695A (en) | 2017-10-30 | 2017-10-30 | A kind of manufacture craft of big L/D ratio thin-wall metal container blanks |
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| CN107824695A true CN107824695A (en) | 2018-03-23 |
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| CN201711034981.1A Pending CN107824695A (en) | 2017-10-30 | 2017-10-30 | A kind of manufacture craft of big L/D ratio thin-wall metal container blanks |
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Citations (7)
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|---|---|---|---|---|
| CN1355076A (en) * | 2000-11-27 | 2002-06-26 | 中国第二重型机械集团公司 | Technoloyg for manufacturing thick-wall closure head with integral bearing apnn stand |
| CN101245282A (en) * | 2008-03-25 | 2008-08-20 | 佛山市顺德区远茂化工实业有限公司 | Metallic fiber drawing lubricant agent |
| CN101480684A (en) * | 2008-01-09 | 2009-07-15 | 上海苍逸五金厂 | Technique for shaping nickel-based high-temperature alloy sheet material ball head cup shape |
| CN101528379A (en) * | 2006-07-26 | 2009-09-09 | 印普瑞思集团有限公司 | Method and apparatus for forming a steel pressure container, such steel pressure container and a preform therefor |
| CN102585973A (en) * | 2012-02-08 | 2012-07-18 | 哈尔滨工业大学 | Preparation method of graphene oxide-fullerene water-based lubricating additives |
| CN103992839A (en) * | 2014-05-19 | 2014-08-20 | 青岛大学 | Method for preparing water-based graphene-molybdenum disulfide nanotube lubricant additive |
| CN106270263A (en) * | 2016-08-30 | 2017-01-04 | 成都科创诺商贸有限公司 | A kind of Pneumatic automobile corrosion resistant steel cylinder Hot drawing technique |
-
2017
- 2017-10-30 CN CN201711034981.1A patent/CN107824695A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1355076A (en) * | 2000-11-27 | 2002-06-26 | 中国第二重型机械集团公司 | Technoloyg for manufacturing thick-wall closure head with integral bearing apnn stand |
| CN101528379A (en) * | 2006-07-26 | 2009-09-09 | 印普瑞思集团有限公司 | Method and apparatus for forming a steel pressure container, such steel pressure container and a preform therefor |
| CN101480684A (en) * | 2008-01-09 | 2009-07-15 | 上海苍逸五金厂 | Technique for shaping nickel-based high-temperature alloy sheet material ball head cup shape |
| CN101245282A (en) * | 2008-03-25 | 2008-08-20 | 佛山市顺德区远茂化工实业有限公司 | Metallic fiber drawing lubricant agent |
| CN102585973A (en) * | 2012-02-08 | 2012-07-18 | 哈尔滨工业大学 | Preparation method of graphene oxide-fullerene water-based lubricating additives |
| CN103992839A (en) * | 2014-05-19 | 2014-08-20 | 青岛大学 | Method for preparing water-based graphene-molybdenum disulfide nanotube lubricant additive |
| CN106270263A (en) * | 2016-08-30 | 2017-01-04 | 成都科创诺商贸有限公司 | A kind of Pneumatic automobile corrosion resistant steel cylinder Hot drawing technique |
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Application publication date: 20180323 |