CN203418019U - Cooling gas direct-cooling device of thermal forming die based on boron steel pipe - Google Patents
Cooling gas direct-cooling device of thermal forming die based on boron steel pipe Download PDFInfo
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- CN203418019U CN203418019U CN201320445693.6U CN201320445693U CN203418019U CN 203418019 U CN203418019 U CN 203418019U CN 201320445693 U CN201320445693 U CN 201320445693U CN 203418019 U CN203418019 U CN 203418019U
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- refrigerating gas
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- cooled device
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Abstract
The utility model relates to the technical field of thermal treatment plastic forming, and provides a cooling gas direct-cooling device of a thermal forming die based on a boron steel pipe. The cooling gas direct-cooling device comprises an upper die with convex corner areas, concave corner areas and plane areas, a lower die with concave corner areas and plane areas, arc faces arranged on the concave corner areas of the upper die and the concave corner areas of the lower die, and a plurality of semi-open cooling gas channels formed in the surfaces of the plane areas. Cooling gas flows in the semi-open cooling gas channels and is finally discharged into the air or recycled. According to the cooling gas direct-cooling device of the thermal forming die, a workpiece can be formed successfully through stamping of the die in the forming stage, and the cooling gas can be used for directly cooling the workpiece in the pressure-maintaining cooling stage.
Description
Technical field
The utility model relates to the equipment in a kind of heat treatment plastic forming technology field, specifically the direct-cooled device of a kind of refrigerating gas of the hot-forming die based on boron steel steel pipe.
Background technology
Boron steel steel pipe is as a series of hot forming steel pipes, and production technology as shown in Figure 1, is divided into and is shaped and 2 stages of quench cooled, wherein: shaping stage needs at high temperature by mould punching, to be shaped; Need to can there is the transformation from austenite microstructure to martensite microstructure by controlling certain cooling velocity in the quench cooled stage, obtain high intensity and hardness: different according to boron steel kind, its intensity can reach 500～2000MPa.After common hot forming, intensity reaches the boron steel chemical composition of 1500MPa and is:
| ? | C | Si | Mn | P | S | Cr | B |
| min | 0.20 | 0.20 | 1.00 | - | - | 0.15 | 0.0015 |
| max | 0.25 | 0.35 | 1.30 | 0.025 | 0.015 | 0.25 | 0.0050 |
The common die quenching type of cooling, is to arrange cooling water channel at mould inside at present.Be the boron steel workpiece under high temperature, enter pressurize cooling stage after being shaped by mould punching, first transfer heat to mould steel, mould steel transfers heat to the cooling water channel being arranged in wherein again, thereby realizes cooling to boron steel workpiece; The cooling effectiveness of this mode workpiece, not only depends on arranging of cooling water channel, is limited to the heat transfer efficiency of mould steel simultaneously, belongs to the hot forming processing technology of the indirect cooling workpiece of cooling fluid.
Through the retrieval of prior art is found, Chinese patent literature CN102939221A, disclose a day 2013-02-20, disclose the manufacture method of a kind of bumper bottom reinforcing material, it comprises: length is cut off the cut-out step that hardenability element adds steel pipe in accordance with regulations; The heat treatment step steel pipe cutting off being heated with forming temperature; By utilizing extrusion die to carry out the hot-forming hot-forming step that is shaped to the shape of the horizontal part that possesses planar portions in both sides to the steel pipe of above-mentioned heating; And the horizontal part of institute's moulding under the state at the above-mentioned extrusion die of closure is carried out to cooling cooling step fast.But this technology enters pressurize cooling stage after being shaped by mould punching, first transfers heat to mould steel, and mould steel transfers heat to the cooling water channel being arranged in wherein again, thereby realize cooling to boron steel workpiece; The cooling effectiveness of this mode workpiece, not only depends on arranging of cooling water channel, is limited to the heat transfer efficiency of mould steel simultaneously, belongs to the hot forming processing technology of the indirect cooling workpiece of cooling fluid.
Utility model content
The utility model is for prior art above shortcomings, a kind of direct-cooled device of refrigerating gas of the hot-forming die based on boron steel steel pipe is proposed, both can by mould punching, workpiece be shaped smoothly at shaping stage, can realize the direct cooling workpiece of refrigerating gas at pressurize cooling stage again.
The utility model is achieved through the following technical solutions, the utility model comprises: with the patrix of salient angle region, re-entrant angle region and plane domain, with the counterdie of re-entrant angle region and plane domain and be arranged at respectively the cambered surface of upper die and lower die concave angular zone and some the surperficial semi-open cooling airway of plane domain, refrigerating gas circulates in semi-open cooling airway and finally enters atmosphere or circulation is reclaimed.
The head end of described semi-open cooling airway and the end composition cooling air circuit that is connected with the refrigerating gas interface of hot forming tool respectively, refrigerating gas finally by cooling air circuit, directly enters atmosphere or circulation is reclaimed.
Described connection refers to: the semi-open cooling airway that is arranged in part of the upper die and part of the lower die is communicated with respectively and forms respectively one or several entrance and exit, and described entrance and exit is connected with entrance with the outlet of forcing press respectively.
The profile in described salient angle region is set to and the identical shape of finished product profile.
Semi-open cooling airway is set in the following manner: according to the size of the arc radius in product section re-entrant angle to be formed region in the cambered surface in described re-entrant angle region, the direction biasing 0～L-3(mm reducing to arc radius) position arranges semi-open cooling airway, wherein: L is the arc length in re-entrant angle region.
Described patrix inside is provided with sealing cooling airway.
The cross section of described semi-open cooling airway is circular groove structure, inverted trapezoidal groove structure, rectangular recess structure or its combination.
Described refrigerating gas is normal temperature or low temperature compression air, compressed nitrogen or compression arbon dioxide.
Technique effect
Compared with prior art, the utility model advantage comprises:
1) core of the present utility model is: making full use of component shaping is this rule that mould salient angle is shaped, re-entrant angle does not play shaping effect, in mould re-entrant angle region, arrange cooling gas passage, neither affect the shaping of workpiece, can realize refrigerating gas again and the direct of workpiece contacts, thereby realize, be shaped, coolingly once complete.
2) the utility model is integrated into a station realization by component shaping and the direct Cooling Quenching of refrigerating gas.In prior art, there is the technique of using cooling water, oil, the direct cooling boron steel steel pipe workpieces of compressed air, but must, after component shaping, beyond forming station, increase a station and be equipped with different operating modes, frock and equipment and realize.
3) the direct cooling workpiece of refrigerating gas, cooling effectiveness is high.In prior art, there is the indirect cooling workpiece of mould steel that uses internal placement cooling water, can realize component shaping and Cooling Quenching completes at a station, but cooling water can not direct cooling workpiece, heat conducts by mould steel, cooling efficiency is not the efficiency of supply that depends on cooling water conventionally, but depends on the heat transfer efficiency of mould steel.Use this technique, can effectively improve cooling effectiveness.
Hollow area is cooling.Particularly, for cast part, some region is for the needs of product, and inside is hollow (upper and lower punch-die is contactless), at this moment between the indirect cooling technology punch-die of traditional mould steel, just cannot apply packing pressure, thereby cannot effective cooling workpiece.Use technology of the present utility model, under, the hollow state without packing pressure contactless at punch-die, equally can supply with refrigerating gas, workpiece is carried out to effective cooling.
4) the utility model can be used in conjunction with the indirect cooling technology of the indirect cooling workpiece of existing mold steel.On a specific workpiece, below several situations be difficult to realize evenly cooling:
I) product geometric properties is complicated, and indirect cooling water road is difficult to evenly arrange, and even occurs cooling dead angle;
Ii) product is laser assembly solder plate (Tailored Welded Blank), and tubing itself is formed by plate with laser welding, the pipe crimping of two or more different-thickness.Zones of different is because thickness is different, and tradition indirectly cooling method cooling effectiveness is difficult to accomplish consistent with other regions;
Iii) product is not for waiting material slab (Tailored Rolled Blank), and pipe crimping itself is rolled into the steel pipe of two or more different-thickness by special cold-rolling process.Zones of different is because thickness is different, and tradition indirectly cooling method cooling effectiveness is difficult to accomplish consistent with other regions;
In above situation, according to actual needs, zones of different can freely select refrigerating gas directly cooling or the direct cooling combination of refrigerating gas is indirectly cooling, mutually supplements, and reaches evenly cooling, the object of simultaneously enhancing productivity.
Accompanying drawing explanation
Fig. 1 is existing hot forming technology schematic diagram;
In figure: a is for adding post forming; B is by pressurize quench cooled.
Fig. 2 is mould structure sectional schematic diagram of the present utility model;
In figure: patrix 1, salient angle region 2, the semi-open cooling airway 3 that is arranged at re-entrant angle region, the semi-open cooling airway 4 that is arranged at plane domain, counterdie 5, product workpiece 6, sealing cooling airway 7.
Fig. 3 is semi-open cooling airway schematic diagram in embodiment;
In figure: a is circular groove structure, b is inverted trapezoidal structure, and c is rectangular recess structure, and d is circular arc and rectangle or trapezoidal combining structure.
The specific embodiment
Below embodiment of the present utility model is elaborated; the present embodiment is implemented take technical solutions of the utility model under prerequisite; provided detailed embodiment and concrete operating process, but protection domain of the present utility model is not limited to following embodiment.
As shown in Figure 2, the present embodiment comprises: patrix 1, counterdie 5 and be arranged at respectively patrix 1 and some the semi-open cooling airway 3,4 on counterdie 5 surfaces.Semi-open cooling airway is unified is D6 semi-circular recesses, and flute pitch is unified is 12mm.Forcing press is 150T thermoforming special pressure machine, and 4 groups of common industrial air cooling sources of the gas are provided, and the initial temperature of every group is-18C, and flow is 1000g/ minute, and rated power is 7.5KW.
Workpiece is the thick boron steel steel pipe of 1.5mm, length 100mm, and steel pipe caliber is D50mm, corner fillet is R6, i.e. arc length 37.68mm.
As shown in Figure 2, in hot forming process, due to the existence in salient angle region 2, can guarantee that workpiece is shaped according to product design; Pressurize cooling stage, serial cooling airway 3, the 4 supply refrigerating gases of arranging, directly carry out cooling to workpiece; For further optimizing cooling effect, traditional indirect cooling sealing cooling airway 7 is set in the salient angle region 2 of patrix 1.
As shown in Figure 3, for meeting, calculate required refrigerating gas road flow, semi-open cooling airway can have different cross sections as required, both can be that (Fig. 3 a) for circular groove structure, also can be inverted trapezoidal (Fig. 3 b) or rectangular recess (Fig. 3 c) structure, can also be circular arc and rectangle or trapezoidal combining structure (Fig. 3 d), according to the variation of product, cooling needs, the convenience of processing and manufacturing etc., do appropriateness adjustment completely.
Claims (8)
1. the direct-cooled device of the refrigerating gas of the hot-forming die based on boron steel steel pipe, it is characterized in that, comprise: with the patrix of salient angle region, re-entrant angle region and plane domain, with the counterdie of re-entrant angle region and plane domain and be arranged at respectively the cambered surface of upper die and lower die concave angular zone and some the surperficial semi-open cooling airway of plane domain, refrigerating gas circulates in semi-open cooling airway and finally enters atmosphere or circulation is reclaimed.
2. the direct-cooled device of refrigerating gas according to claim 1, it is characterized in that, the head end of described semi-open cooling airway and the end composition cooling air circuit that is connected with the refrigerating gas interface of hot forming tool respectively, refrigerating gas finally by cooling air circuit, directly enters atmosphere or circulation is reclaimed.
3. the direct-cooled device of refrigerating gas according to claim 2, it is characterized in that, described connection refers to: the semi-open cooling airway that is arranged in part of the upper die and part of the lower die is communicated with respectively and forms respectively one or several entrance and exit, and described entrance and exit is connected with entrance with the outlet of forcing press respectively.
4. the direct-cooled device of refrigerating gas according to claim 1, is characterized in that, the profile in described salient angle region is set to and the duplicate shape of finished product profile.
5. the direct-cooled device of refrigerating gas according to claim 1, it is characterized in that, semi-open cooling airway is set in the following manner: according to the size of the arc radius in product section re-entrant angle to be formed region in the cambered surface in described re-entrant angle region, the direction biasing 0～L-3(mm reducing to arc radius) position arranges semi-open cooling airway, wherein: L is the arc length in re-entrant angle region.
6. the direct-cooled device of refrigerating gas according to claim 1, is characterized in that, described patrix inside is provided with sealing cooling airway.
7. according to arbitrary described direct-cooled device of refrigerating gas in claim 1-6, it is characterized in that, the cross section of described semi-open cooling airway is circular groove structure, inverted trapezoidal groove structure, rectangular recess structure or its combination.
8. the direct-cooled device of refrigerating gas according to claim 1, is characterized in that, described refrigerating gas is normal temperature or low temperature compression air, compressed nitrogen or compression arbon dioxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320445693.6U CN203418019U (en) | 2013-07-24 | 2013-07-24 | Cooling gas direct-cooling device of thermal forming die based on boron steel pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320445693.6U CN203418019U (en) | 2013-07-24 | 2013-07-24 | Cooling gas direct-cooling device of thermal forming die based on boron steel pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203418019U true CN203418019U (en) | 2014-02-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320445693.6U Expired - Fee Related CN203418019U (en) | 2013-07-24 | 2013-07-24 | Cooling gas direct-cooling device of thermal forming die based on boron steel pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203418019U (en) |
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2013
- 2013-07-24 CN CN201320445693.6U patent/CN203418019U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140205 Termination date: 20160724 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |