CN110216196A - The floating punch hot-forming die of steel patch plate and hot press-formed method - Google Patents
The floating punch hot-forming die of steel patch plate and hot press-formed method Download PDFInfo
- Publication number
- CN110216196A CN110216196A CN201910517777.8A CN201910517777A CN110216196A CN 110216196 A CN110216196 A CN 110216196A CN 201910517777 A CN201910517777 A CN 201910517777A CN 110216196 A CN110216196 A CN 110216196A
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- Prior art keywords
- punch
- plate
- floating
- hot
- solid
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- 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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- 238000007667 floating Methods 0.000 title claims abstract description 64
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 29
- 239000010959 steel Substances 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims description 14
- 239000007787 solid Substances 0.000 claims abstract description 45
- 239000004615 ingredient Substances 0.000 claims abstract description 28
- 238000001816 cooling Methods 0.000 claims abstract description 21
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910001873 dinitrogen Inorganic materials 0.000 claims abstract description 15
- 238000010791 quenching Methods 0.000 claims abstract description 8
- 230000000171 quenching effect Effects 0.000 claims abstract description 8
- 238000000465 moulding Methods 0.000 claims description 8
- 230000009471 action Effects 0.000 claims description 4
- 239000002826 coolant Substances 0.000 claims description 4
- 238000007493 shaping process Methods 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 229910000734 martensite Inorganic materials 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 230000001360 synchronised effect Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 5
- 238000005457 optimization Methods 0.000 description 4
- 239000000498 cooling water Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000007652 sheet-forming process Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/02—Stamping using rigid devices or tools
- B21D22/022—Stamping using rigid devices or tools by heating the blank or stamping 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
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
-
- 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
- B21D37/10—Die sets; Pillar guides
- B21D37/12—Particular guiding equipment, e.g. pliers; Special arrangements for interconnection or cooperation of dies
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
This patent discloses a kind of floating punch hot-forming dies of steel patch plate, including upper die holder, lower die holder and cavity plate and solid punch, the solid punch internal activity is equipped with floating punch, the upper surface of floating punch is lower than solid punch upper surface, and be provided between the bottom of floating punch and the inner bottom of solid punch or lower die holder in the nitrogen gas spring jacked up upwards to floating punch under normal conditions, floating punch can be moved up and down in the inner vertical of solid punch.It is hot press-formed to steel patch plate using the mold, it can guarantee that plate uniform throughout is pressurized, complete punch forming, and major ingredient plate and the quenching of patch plate synchronous cooling, proposed production efficiency, and so that martensite is converted completely, improved the hardness of steel patch plate.
Description
Technical field
This patent is related to a kind of shaping dies and manufacturing process, and in particular to a kind of floating punch hot forming of steel patch plate
Mold and hot press-formed method belong to steel patch plate manufacture field.
Background technique
The hot forming of high strength steel patch plate is spot-welded together by major ingredient plate and patch plate drop stamping steel plate first, is then adding
It is integrally heated to 930 DEG C or so and held for some time in hot stove, is completed in hot-forming die later stamping, finally leads to
The cooling pipe for crossing punch and matrix carries out pressure maintaining quenching.With traditional hot forming and it is common it is stamping compared with, patch plate hot forming skill
Art is increasingly complex, and mold design and stroke control difficulty are also bigger.And pressure maintaining quenching is the very important ring of patch plate hot forming
Section, will directly affect the performance of transformation of austenite to martensite process and product.
When pressure maintaining quenches, plate and mold contact heat exchange coefficient are mainly influenced by gap and contact pressure.Referring to fig. 4,5,
Gap is smaller between plate and mold, and contact heat exchange coefficient is bigger, and plate cooling is faster；Contact pressure is got between plate and mold
Greatly, contact heat exchange coefficient is bigger, and plate cooling is faster.
For conventional steel patch plate floating punch hot-forming die at work, referring to fig. 2,3, because of patch plate 4
The tolerance of thickness presence ± 0.05mm, this tolerance range carry out result below.When taking negative common difference lower limit such as patch plate 4, when recessed film 2
When molding with about 11 punch-pin, 3 upper and lower surface of major ingredient plate is contacted with recessed film 2, punch-pin 11 respectively, but is welded on 3 following table of major ingredient plate
The gap 12 of the lower surface of patch plate 4 on face and punch-pin die cavity bottom surface be 0.05mm(referring to fig. 2).
If patch plate 4 takes the plus tolerance upper limit, when recessed film 2 is molded with about 11 punch-pin, the lower surface of patch plate 4 and punch-pin
The contact of die cavity bottom surface, but the gap 13 of major ingredient plate 3 and punch-pin upper surface is 0.05mm(referring to Fig. 3).
There are above-mentioned gaps between plate and mold, in this way caused by consequence be that the pressure of press machine cannot pass through upper and lower mould
Seat, concave-convex mold are uniformly applied on major ingredient plate 3 and patch plate 4.By taking patch plate 4 takes negative common difference as an example, patch plate 4 is in punch-pin mould
The intracavitary gap with die cavity bottom surface is 0.05mm, and it is major ingredient plate cooling rate times over patch that this result bring, which directly affects,
Plate, to cause production efficiency low, simultaneously because cooling velocity is different and causes the incomplete conversion of martensite, to lower
The hardness of part.
Summary of the invention
A kind of floating punch hot-forming die for being designed to provide steel patch plate of this patent, it can molding when,
Simultaneously by mold pressing molding, the steel patch plate for producing multi-cavity cools down the upper and lower surface of plate under the same conditions, with
The mechanical properties such as the hardness for reaching best production efficiency and the protection to mold, while guaranteeing steel patch plate.
The purpose of this patent can be achieved through the following technical solutions:
A kind of floating punch hot-forming die of steel patch plate, including the recessed of upper die holder, lower die holder and upper die holder bottom connection
The solid punch connected at the top of mould and lower die holder, solid punch upper end internal activity are equipped with floating punch, floating punch
Upper surface be lower than solid punch upper surface, and set between floating punch bottom and the inner bottom or lower die holder of solid punch
It is equipped in the nitrogen gas spring jacked up upwards to floating punch under normal conditions, floating punch can move down on the inner vertical of solid punch
It is dynamic.
The utility model has the advantages that cavity plate and solid punch molding, major ingredient plate are extruded in middle part, while nitrogen in sheet forming process
Spring can drive floating punch to move up, and then push patch plate, in this way, the upper and lower surface of plate is bonded with mold simultaneously,
By mold pressing molding, eliminating patch plate thickness tolerance bring influences, and improves the hardness of production efficiency and manufactured parts.
As a kind of technical optimization scheme of this patent, the inside of the solid punch, cavity plate and floating punch is respectively provided with
There is cooling pipe, cooling tube can cool down patch plate and major ingredient plate in Sheet Metal Processing, accelerate the decline of temperature, realization pair
The pressure maintaining of plate quenches.
As a kind of technical optimization scheme of this patent, the side of the inside two sides of solid punch and opposite floating punch
Between setting to the linear guide being oriented to that moves up and down of solid punch, nitrogen gas spring can push floating punch to moving up
Dynamic, linear guide can be oriented in floating punch is mobile for it, moved it direction and stablized, be able to maintain and move up and down vertically.
As a kind of technical optimization scheme of this patent, there is cavity between the bottom end and lower die holder of the solid punch,
And nitrogen gas spring is mounted on the inside of cavity, cavity facilitates the installation of nitrogen gas spring, be easy to use in Maintenance and Repair.
As a kind of technical optimization scheme of this patent, the stroke that the floating punch moves up and down inside solid punch
Less than 5mm, the stroke of floating punch is less than the precision that 5mm is able to maintain in production, and floating punch can carry out plate on top
It pushes and squeezes, eliminate the tolerances of patch plate thickness ± 0.05mm, reduce the adverse effect come by tolerance range in processing.
This patent also discloses a kind of hot press-formed method of steel patch plate, it can guarantee plate uniform throughout by
Pressure completes punch forming, and major ingredient plate and the quenching of patch plate synchronous cooling, proposed production efficiency, so that martensite is converted completely,
Improve the hardness of steel patch plate.
The hot press-formed method of the steel patch plate, be major ingredient plate 3 and about 4 patch plate is spot-welded together, heating
880 DEG C -930 DEG C and held for some time, the later hot pressing in above-mentioned floating punch hot-forming die are integrally heated in furnace
Molding, then again to flow through the cooling medium of cooling pipe 7 to hot-forming in the case of solid punch 5 is molded with cavity plate 2
Major ingredient plate 3 and patch plate 4 cooling carry out pressure maintaining quenching；When hot-forming, floating punch 10 under the action of nitrogen gas spring 9,
10 upper surface of floating punch is contacted with 4 bottom of patch plate, meanwhile, major ingredient plate 3 between solid punch 5 and cavity plate 2 and solid
Determine punch-pin 5, cavity plate 2 contacts.
The hot press-formed method of above-mentioned steel patch plate, cooling medium is water.
The hot press-formed method of above-mentioned steel patch plate, when molding, major ingredient plate 3, patch plate 4, which are pressurized, is not less than 10MPa.
Contact pressure is bigger, and contact heat exchange coefficient is bigger, and plate cooling is faster, is further ensured that quenching quality.
This patent the utility model has the advantages that
Designed using using floating punch, mold on earth when mold controlled with plate by the active force of nitrogen gas spring
Fitting, the part for producing multi-cavity, so that martensite is completely converted, guarantee the hard of product in the same terms while cooling
Degree, to reach the protection of best production efficiency and die insert, reduction in the numbers of seconds.The top of floating punch is arranged in patch plate,
Previous single punch structure is replaced with floating punch+solid punch；Nitrogen gas spring provides floating liftout power, energy to floating punch
Eliminating tolerance bring influences；Between floating punch and solid punch using linear guide be oriented to, keep direction it is constant, plate by
Power is uniform.
Detailed description of the invention
In order to facilitate the understanding of those skilled in the art, being further described with reference to the accompanying drawing to this patent.
Fig. 1 is the overall structure diagram of this patent.
Fig. 2 is the structural schematic diagram that existing shaping dies patch plate takes negative common difference lower limit.
Fig. 3 is the structural schematic diagram that existing shaping dies patch plate takes the plus tolerance upper limit.
Fig. 4 is contact heat exchange coefficient with variation schematic diagram in gap between plate and mold.
Fig. 5 is contact heat exchange coefficient with contact pressure variation schematic diagram between plate and mold.
In figure: 1, upper die holder；2, cavity plate；3, major ingredient plate；4, patch plate；5, solid punch；6, lower die holder；7, cooling tube
Road；8, linear guide；9, nitrogen gas spring；10, floating punch；11, punch-pin；12, the gap between patch plate and punch-pin die cavity；
13, the gap between major ingredient plate and punch-pin upper surface.
Specific embodiment
It is clearly and completely described below in conjunction with technical solution of the embodiment to this patent, it is clear that described reality
Applying example is only this patent a part of the embodiment, instead of all the embodiments.Based on the embodiment in this patent, this field is general
Logical technical staff all other embodiment obtained without creative efforts belongs to this patent protection
Range.
Refering to Figure 1, a kind of floating punch hot-forming die of steel patch plate, including upper die holder 1, lower die holder 6 with
And the solid punch 5 that is connected with 6 top middle-end of lower die holder of cavity plate 2 of 1 bottom middle-end of upper die holder connection, inside solid punch 5
Intermediate active is equipped with floating punch 10, and the upper surface of floating punch 10 is lower than 5 upper surface of solid punch.The bottom of floating punch 10
Portion extends downwardly into the cavity between 5 bottom end of solid punch and lower die holder 6, lower surface and the floating punch 10 of lower die holder 6
Several nitrogen gas springs 9 are provided between bottom, floating punch 10 can be moved up and down in the inner vertical of solid punch 5.Nitrogen
Spring 9 is mounted on the inside of cavity.
The inside of solid punch 5, cavity plate 2 and floating punch 10 is provided with cooling pipe 7.
The inside two sides of solid punch 5 pass through linear guide 8 and are connected with the side of floating punch 10.
The stroke that floating punch 10 moves up and down inside solid punch 5 is less than 5mm.
The hot press-formed method of steel patch plate, process are as follows.Major ingredient plate 3 and about 4 patch plate is spot-welded together,
900 DEG C or so and held for some time are integrally heated in heating furnace, later in above-mentioned floating punch hot-forming die
It is hot-forming, then again to flow through the cooling water of cooling pipe 7 to hot-forming 3 He of major ingredient plate in the case of mold clamping
The cooling of patch plate 4 carries out pressure maintaining quenching.When hot-forming, major ingredient plate 3 and 4 temperature of patch plate are at 600-800 DEG C, floating punch
(10) under the action of nitrogen gas spring (9), floating punch (10) upper surface is contacted with patch plate (4) bottom, meanwhile, it is located at and fixes
Major ingredient plate (3) between punch-pin (5) and cavity plate (2) is contacted with solid punch (5), cavity plate (2).Major ingredient plate (3), patch plate (4)
Being pressurized is about 20MPa.
Major ingredient plate 3 when in use, is placed on the top of solid punch 5 by this patent, when mold is closed, punch-pin 2 and anchor
Major ingredient plate 3 between mould 5 is compacted and shapes, while floating punch 10 compresses patch plate 4 under the action of nitrogen gas spring 9, disappears
Except 4 thickness deviation bring of patch plate influences；The cooling water for ensuring that major ingredient plate 3 and patch plate 4 are cooled in pipeline 7 in this way is same
When synchronous cooling, linear guide 8 be floating punch 10 movement be oriented to, guarantee that mobile direction is constant.
This patent preferred embodiment disclosed above is only intended to help to illustrate this patent.There is no detailed for preferred embodiment
All details are described, also not limiting the patent is only the specific embodiment.Obviously, according to the content of this specification,
It can make many modifications and variations.These embodiments are chosen and specifically described to this specification, is in order to preferably explain this patent
Principle and practical application, so that skilled artisan be enable to better understand and utilize this patent.This patent is only
It is limited by claims and its full scope and equivalent.
Claims (8)
1. the floating punch hot-forming die of steel patch plate, including upper die holder (1), lower die holder (6) and upper die holder (1) bottom connect
The solid punch (5) connected at the top of the cavity plate (2) and lower die holder (6) connect, which is characterized in that in solid punch (5) upper end
Portion is movably installed with floating punch (10), and the upper surface of floating punch (10) is lower than solid punch (5) upper surface, and floating punch
(10) it is provided between bottom and the inner bottom or lower die holder (6) of solid punch (5) upward to floating punch under normal conditions
The nitrogen gas spring (9) of jack-up, floating punch (10) can be moved up and down in the inner vertical of solid punch (5).
2. the floating punch hot-forming die of steel patch plate according to claim 1, which is characterized in that the solid punch
(5), the inside of cavity plate (2) and floating punch (10) is provided with cooling pipe (7).
3. the floating punch hot-forming die of steel patch plate according to claim 1, which is characterized in that solid punch (5)
Inside two sides and opposite floating punch (10) side between setting moving up and down for solid punch (5) is oriented to
Linear guide (8).
4. the floating punch hot-forming die of steel patch plate according to claim 1, which is characterized in that the solid punch
(5) there is cavity, and nitrogen gas spring (9) is mounted on the inside of cavity between bottom end and lower die holder (6).
5. the floating punch hot-forming die of steel patch plate according to claim 1, which is characterized in that the floating punch
(10) stroke moved up and down inside solid punch (5) is less than 5mm.
6. the hot press-formed method of steel patch plate, it is characterized in that: major ingredient plate (3) and patch plate (4) is spot-welded together up and down,
880 DEG C -930 DEG C and held for some time are integrally heated in heating furnace, later in floating punch heat as claimed in claim 2
It is hot-forming in shaping dies, then again to flow through cooling pipe (7) in the case of solid punch (5) and cavity plate (2) mold
Cooling medium to hot-forming major ingredient plate (3) and patch plate (4) cooling carry out pressure maintaining quenching；When hot-forming, float convex
Under the action of nitrogen gas spring (9), floating punch (10) upper surface contacts mould (10) with patch plate (4) bottom, meanwhile, it is located at solid
The major ingredient plate (3) determined between punch-pin (5) and cavity plate (2) is contacted with solid punch (5), cavity plate (2).
7. the hot press-formed method of steel patch plate as claimed in claim 6, it is characterized in that: cooling medium is water.
8. the hot press-formed method of steel patch plate as claimed in claim 6, it is characterized in that: when molding, major ingredient plate (3) is mended
Fourth plate (4), which is pressurized, is not less than 10MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910517777.8A CN110216196A (en) | 2019-06-14 | 2019-06-14 | The floating punch hot-forming die of steel patch plate and hot press-formed method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910517777.8A CN110216196A (en) | 2019-06-14 | 2019-06-14 | The floating punch hot-forming die of steel patch plate and hot press-formed method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110216196A true CN110216196A (en) | 2019-09-10 |
Family
ID=67817204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910517777.8A Pending CN110216196A (en) | 2019-06-14 | 2019-06-14 | The floating punch hot-forming die of steel patch plate and hot press-formed method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110216196A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112453096A (en) * | 2020-10-10 | 2021-03-09 | 重庆至信实业集团有限公司 | Processing technology and equipment for sheet with different thicknesses |
| CN113042600A (en) * | 2021-03-30 | 2021-06-29 | 马鞍山钢铁股份有限公司 | Hot stamping device and hot stamping method suitable for Zn coating and adjustable in stamping stress |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113042600A (en) * | 2021-03-30 | 2021-06-29 | 马鞍山钢铁股份有限公司 | Hot stamping device and hot stamping method suitable for Zn coating and adjustable in stamping stress |
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