CN103611859A - Method for cold precision forging of T-shaped iron by mesoporous flow distribution technology - Google Patents
Method for cold precision forging of T-shaped iron by mesoporous flow distribution technology Download PDFInfo
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- CN103611859A CN103611859A CN201310576123.5A CN201310576123A CN103611859A CN 103611859 A CN103611859 A CN 103611859A CN 201310576123 A CN201310576123 A CN 201310576123A CN 103611859 A CN103611859 A CN 103611859A
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Abstract
The invention relates to the technical field of forging, and discloses a method for cold precision forging of T-shaped iron by the mesoporous flow distribution technology. The method includes performing cold precision forging on a blank by a die comprising an upper die and a lower die. The method further includes that during cold precision forging of the blank, a base body of the blank is provided with an accommodating space which is the same as or opposite to the flowing direction of materials and is used for accommodating redundant materials during cold precision forging of the blank. The accommodating space used for accommodating the redundant materials during cold precision forging of the blank is formed in the base body of the blank, and flow distribution of the redundant cold-forging materials is realized, so that pressure stability in a cavity during cold precision forging is guaranteed, dimension precision is improved, service life of the die is prolonged, losses of materials are reduced, procedures for machining a magnetic core and surfaces of the blank after cold precision forging are omitted, production efficiency is greatly improved, and high economic benefit is achieved.
Description
Technical field
The present invention relates to technical field of forging, more particularly, particularly in a kind of T iron cold closed-die forging, adopt the method for mesopore dividing technology.
Background technology
T ferromagnetic core is the Hardware fitting of electroacoustic trumpet, because of core shapes similar to capitalization English letter T word, therefore claim T iron.Early stage T iron is many to be formed by rear plate and magnetic core riveted, is called split type T iron.Along with the development of cold-heading technology and the maturation of alramenting saponification technology, modern T iron mostly is the structure of true integral type.Its advantage is: feed consumption is few, and stock utilization reaches more than 90%, can realize without turning processing, and cost is low, and good manufacturability, precision is high, and tonequality is stable etc.
The post core of huge pillar core T iron is larger, and thickness of slab is thicker, and post core multi-band has mesopore to alleviate the weight of self.Most huge pillar core T iron weight are all more than 1 kilogram, adopt the mode of cold heading technique (30 ℃ of following normal temperature) to produce can to reduce loss and the minimizing machine of approximately 30% material to add surplus, and the product even having can be without complete without machined; But if adopt thermal forging technology (being heated to more than 830 ℃) because of thermal deformation and surface high-temp oxidation, the product of producing all will carry out machined, cold-forging technique has increased a large amount of machined expenses relatively, so the expense that the mode of T iron general employing cold-heading when designing and developing reduces production costs.
And because the product weight of huge pillar core T iron is larger, larger at saw material link blanking deviation of weight, the while because annealing hardness has deviation, causes the shape obtaining under same pressure environment to have deviation in annealing process.
The feature of T iron is that the required precision of post core is very high, above has back of the body convex closure, and there is groove at post root place.Post core place has mould just to form the local existing picture of envelope that closes like this, and the deviation of and hardness heavy due to material.Under same pressure environment, as material unnecessary in shape chamber, cannot shunt, can cause the bursting apart of unstable or mould of dimensional accuracy.
The production technology of existing T iron comprises: lubricate-moulding-turning-brill mesopore-cleaning burr-plating-packing of lubricate-flattening-annealing-sandblast-phosphatization saponification of lubricate-pressure head-annealing-sandblast-phosphatization saponification of saw material-sandblast-phosphatization saponification, its blank structure adopting as shown in Figure 3.And for above-mentioned problem, in prior art, the main method adopting is: after (moulding process) cold-heading, the method for Vehicle Processing center pillar guarantees the dimensional accuracy of product, the shortcoming of doing is like this: material deterioration inside is many, mach expense is also very high, and because material unnecessary in shape chamber cannot be shunted, build-up of pressure unstable, also to having a great impact die life.Therefore, need to seek a kind of new method and solve the problems referred to above.
Summary of the invention
The object of the present invention is to provide and a kind ofly reduce spillage of material, make Die pressure stability and can extend the method that adopts mesopore dividing technology in the blank cold closed-die forging of die life.
In order to achieve the above object, the technical solution used in the present invention is as follows:
In a kind of T iron cold closed-die forging, adopt the method for mesopore dividing technology, comprise and adopt mould to carry out cold closed-die forging to blank, described mould includes upper die and lower die, the method is also included in blank cold closed-die forging process, on described blank matrix, be provided with the accommodation space identical or contrary with the flow direction of material, and this accommodation space is for accommodating the unnecessary material of blank cold closed-die forging process.
Preferably, described accommodation space is the tap hole of being located at the magnetic core end of blank.
Preferably, before described blank cold closed-die forging, also comprise the step that adopts computer to simulate, and this simulation specifically comprises the following steps,
S1 adopts three-dimensional graphics software to draw the 3D sterogram of described blank and mould, and is provided with tap hole in the magnetic core end of described blank, and saves as TSL form;
S2 imports the 3D sterogram of the blank of above-mentioned TSL form and mould after Deform3D software, generating mesh, then adopt cold forging mode to forge after geometrical model and primary condition are set.
Preferably, in the Deform3D software in described step S2, the geometrical model of described blank is No. 10 steel, and the geometrical model of described mould is rigidity, and the coefficient of friction of described blank and mould is 0.13, and the patrix translational speed of described mould is 220 mm/second.
Preferably, the cross sectional shape of described tap hole is circular.
Compared with prior art, the invention has the advantages that: the present invention adopts and on blank matrix, is provided with the accommodation space of accommodating material unnecessary in blank cold closed-die forging process, can make the unnecessary material of cold forging realize shunting, on the one hand, guaranteed the pressure stability in shape chamber in cold forging, improved dimensional accuracy, extended the service life of mould, on the other hand, reduced the consume of material, also omitted simultaneously and after cold closed-die forging, needed the magnetic core of blank and plate face to carry out mach operation, greatly improved production efficiency, there is very high economic benefit.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 1 adopts the flow chart of the method for mesopore dividing technology in T iron cold closed-die forging of the present invention.
Fig. 2 adopts blank matrix in the method for mesopore dividing technology to be provided with the structure chart of tap hole in T iron cold closed-die forging of the present invention.
Fig. 3 is the structure chart that in prior art, blank matrix is not provided with tap hole.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Consult shown in Fig. 1, the invention provides a kind of method that adopts mesopore dividing technology in T iron cold closed-die forging, comprise and adopt mould to carry out cold closed-die forging to blank, described mould includes upper die and lower die, the method is also included in blank cold closed-die forging process, on described blank matrix, be provided with the accommodation space identical or contrary with the flow direction of material, and this accommodation space is for accommodating the unnecessary material of blank cold closed-die forging process.
The present embodiment preferably, in blank cold closed-die forging process, is provided with the accommodation space identical with the flow direction of material on blank matrix, and this accommodation space is for accommodating the unnecessary material of blank cold closed-die forging process.
Concrete, as shown in Figure 2, described accommodation space is the tap hole 2 of being located at the magnetic core end of blank 1, the cross sectional shape of this shunting empty 2 can, for circular or other shapes, all not affect enforcement of the present invention.
Concrete, can also before blank cold closed-die forging, also comprise the step that adopts computer to simulate, this simulation steps specifically comprises, first, adopt three-dimensional graphics software (as PRO/E) draw as described in the 3D sterogram of blank and mould, magnetic core end at described blank is provided with tap hole, and saves as TSL form; Then, the 3D sterogram of the blank of above-mentioned TSL form and mould is imported after Deform3D software, generating mesh, then adopt cold forging mode to forge after geometrical model and primary condition are set.Wherein, the geometrical model of described blank is No. 10 steel, and the geometrical model of described mould is rigidity, and described blank and the coefficient of friction of mould are 0.13, and the patrix translational speed of described mould is 220 mm/second.
By above-mentioned computer simulation, can obtain tap hole and without the comparative simulation situation of tap hole.
Do not have the grid tangent plane blank of tap hole (shown in Fig. 3) to flow and when mould stress curve analyzes, the filling pressure line of force is poly-in its stress curve shape chamber so rises.Walk to expect that difficulty has retardance, forging process is unreasonable, and unnecessary material cannot be shunted, and particularly pressure curve is suddenly and approaches an angle of 90 degrees and rise, and easily causes the unstable and mould of size to burst apart.
And when the grid tangent plane blank that has tap hole (shown in Fig. 2) flows and mould stress curve analyzes, the filling pressure line of force is gentle in its stress curve shape chamber rises, to walk to expect brisk, forging process is reasonable, and unnecessary material is assembled to tap hole.
The invention has the advantages that: adopt and on blank matrix, be provided with the accommodation space of accommodating material unnecessary in blank cold closed-die forging process, can make the unnecessary material of cold forging realize shunting, on the one hand, guaranteed the pressure stability in shape chamber in cold forging, improved dimensional accuracy, extended the service life of mould, approximately 2.5 times, on the other hand, reduced the consume of material, can reduce by approximately 2% to 5% material, also omitted simultaneously and after cold closed-die forging, needed the magnetic core of blank and plate face to carry out mach operation, greatly improve production efficiency, there is very high economic benefit.
Although described by reference to the accompanying drawings embodiments of the present invention; but the patent owner can make various distortion or modification within the scope of the appended claims; as long as be no more than the described protection domain of claim of the present invention, all should be within protection scope of the present invention.
Claims (5)
1. in a T iron cold closed-die forging, adopt the method for mesopore dividing technology, comprise and adopt mould to carry out cold closed-die forging to blank, described mould includes upper die and lower die, it is characterized in that: the method is also included in blank cold closed-die forging process, on described blank matrix, be provided with the accommodation space identical or contrary with the flow direction of material, and this accommodation space is for accommodating the unnecessary material of blank cold closed-die forging process.
2. in T iron cold closed-die forging according to claim 1, adopt the method for mesopore dividing technology, it is characterized in that: described accommodation space is the tap hole of being located at blank end.
3. in T iron cold closed-die forging according to claim 1 and 2, adopt the method for mesopore dividing technology, it is characterized in that: before described blank cold closed-die forging, also comprise the step that adopts computer to simulate, and this simulation specifically comprises the following steps,
S1 adopts three-dimensional graphics software to draw the 3D sterogram of described blank and mould, and is provided with tap hole in the end of described blank, and saves as TSL form;
S2 imports the 3D sterogram of the blank of above-mentioned TSL form and mould after Deform3D software, generating mesh, then adopt cold forging mode to forge after geometrical model and primary condition are set.
4. in T iron cold closed-die forging according to claim 3, adopt the method for mesopore dividing technology, it is characterized in that: in the Deform3D software in described step S2, the geometrical model of described blank is No. 10 steel, the geometrical model of described mould is rigidity, the coefficient of friction of described blank and mould is 0.13, and the patrix translational speed of described mould is 220 mm/second.
5. in T iron cold closed-die forging according to claim 2, adopt the method for mesopore dividing technology, it is characterized in that: the cross sectional shape of described tap hole is for circular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310576123.5A CN103611859A (en) | 2013-11-18 | 2013-11-18 | Method for cold precision forging of T-shaped iron by mesoporous flow distribution technology |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310576123.5A CN103611859A (en) | 2013-11-18 | 2013-11-18 | Method for cold precision forging of T-shaped iron by mesoporous flow distribution technology |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06154932A (en) * | 1992-11-17 | 1994-06-03 | Reizu Eng:Kk | Manufacture of light alloy wheel |
| JPH06285575A (en) * | 1993-03-31 | 1994-10-11 | Sumitomo Metal Ind Ltd | Rotation-forging method for non-rotation asymmetric product |
| TW482700B (en) * | 2000-05-12 | 2002-04-11 | Huei-Chiou Lin | Method for producing trumpet T iron |
| CN101862807A (en) * | 2010-06-11 | 2010-10-20 | 西安交通大学 | Rotary forging method for large disc type work piece and forging device |
| CN102814441A (en) * | 2012-08-09 | 2012-12-12 | 江苏森威集团飞达股份有限公司 | Cold forging method and cold extrusion mould |
-
2013
- 2013-11-18 CN CN201310576123.5A patent/CN103611859A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06154932A (en) * | 1992-11-17 | 1994-06-03 | Reizu Eng:Kk | Manufacture of light alloy wheel |
| JPH06285575A (en) * | 1993-03-31 | 1994-10-11 | Sumitomo Metal Ind Ltd | Rotation-forging method for non-rotation asymmetric product |
| TW482700B (en) * | 2000-05-12 | 2002-04-11 | Huei-Chiou Lin | Method for producing trumpet T iron |
| CN101862807A (en) * | 2010-06-11 | 2010-10-20 | 西安交通大学 | Rotary forging method for large disc type work piece and forging device |
| CN102814441A (en) * | 2012-08-09 | 2012-12-12 | 江苏森威集团飞达股份有限公司 | Cold forging method and cold extrusion mould |
Non-Patent Citations (1)
| Title |
|---|
| 张昌明: "采用Deform 3D对2A12铝合金锻造变形的模拟研究", 《锻压技术》 * |
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Application publication date: 20140305 |