CN110653319A - Aluminum alloy automobile control arm forging die - Google Patents
Aluminum alloy automobile control arm forging die Download PDFInfo
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- CN110653319A CN110653319A CN201911095499.8A CN201911095499A CN110653319A CN 110653319 A CN110653319 A CN 110653319A CN 201911095499 A CN201911095499 A CN 201911095499A CN 110653319 A CN110653319 A CN 110653319A
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- 238000005242 forging Methods 0.000 title claims abstract description 132
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 30
- 238000010438 heat treatment Methods 0.000 claims description 36
- 238000000034 method Methods 0.000 claims description 11
- 238000001816 cooling Methods 0.000 claims description 6
- 238000010791 quenching Methods 0.000 claims description 6
- 230000000171 quenching effect Effects 0.000 claims description 6
- 238000005496 tempering Methods 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 5
- 230000006698 induction Effects 0.000 claims description 4
- 230000007704 transition Effects 0.000 claims description 4
- 230000003111 delayed effect Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000000956 alloy Substances 0.000 abstract description 5
- 238000005336 cracking Methods 0.000 abstract description 2
- 239000013078 crystal Substances 0.000 abstract description 2
- 230000007547 defect Effects 0.000 description 4
- 238000009826 distribution Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/02—Dies or mountings therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K7/00—Making railway appurtenances; Making vehicle parts
- B21K7/12—Making railway appurtenances; Making vehicle parts parts for locomotives or vehicles, e.g. frames, underframes
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Forging (AREA)
Abstract
The invention discloses an aluminum alloy automobile control arm forging die which comprises an upper die holder and a lower die holder, wherein the upper die holder and the lower die holder are connected through a guide pillar; an upper forging groove is formed in the lower end face of the upper die base, an upper forging die is arranged in the upper forging groove, an upper insert is arranged between the upper forging die and the upper forging groove, the upper insert is fixedly connected with the upper die base, and an upper die cavity is formed in the lower surface of the upper forging die; the upper end surface of the lower die base is provided with a lower forging groove, a lower forging die is arranged in the lower forging groove, a lower insert is arranged between the lower forging die and the lower forging groove, the lower insert is fixedly connected with the lower die base, the upper surface of the lower forging die is provided with a lower die cavity, and the upper die cavity and the lower die cavity jointly define a die cavity; the blank in the cavity is reasonably distributed, the blank is saved, the utilization rate of the blank is high, the assembly and the disassembly are convenient, and the safety performance is high; and an automatic temperature intelligent control device is arranged, the forging temperature is accurately controlled, the problems of narrow forging temperature range, cracking, large and uneven crystal grains of the aluminum alloy material are solved, and the quality of the forged control arm is high.
Description
Technical Field
The invention relates to the technical field of forging, in particular to a forging die for an aluminum alloy automobile control arm.
Background
With the shortage of energy and the deterioration of natural environment, energy conservation and emission reduction become an important component of the development of manufacturing industry, so that the development trend of future automobiles is lighter and more environment-friendly. In order to make the automobile light, aluminum alloy materials are widely used, the requirements of the vehicle control arm on comprehensive mechanical properties are very high, and the mechanical properties of directly processed parts and castings are poor, so that the 6082 aluminum alloy which is mainly manufactured by a forging technology of the vehicle control arm belongs to 6 series aluminum alloy, contains a large amount of elements such as magnesium, silicon and the like, has relatively good comprehensive mechanical properties, and is widely applied to the manufacturing of automobile parts such as control arms, steering levers and the like.
In the forging process of the existing automobile control arm, because the deformation of the middle step position of the control arm of certain types is large, the defects of insufficient blank filling and the like easily occur in a cavity of a forging die, the blank distribution in the cavity is unreasonable, the blank consumption is large, and the utilization rate is low.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides the aluminum alloy automobile control arm forging die which is simple in structure, reasonable in blank distribution in a cavity, high in blank utilization rate, convenient to assemble and disassemble and high in safety performance, and blanks are saved.
The technical scheme for realizing the purpose of the invention is as follows:
a forging die for an aluminum alloy automobile control arm comprises an upper die holder and a lower die holder, wherein the upper die holder and the lower die holder are connected through a guide pillar; the lower end face of the upper die base is provided with a downward upper forging groove, a forging upper die is arranged in the upper forging groove, an upper insert is arranged between the forging upper die and the upper forging groove, the upper insert is fixedly connected with the upper die base through an insert screw, and the lower surface of the forging upper die is provided with a downward upper die cavity;
the upper end face of the lower die holder is provided with an upward lower forging groove, a forging lower die is arranged in the lower forging groove, a lower insert is arranged between the forging lower die and the lower forging groove, the lower insert is fixedly connected with the lower die holder through an insert screw, an upward lower die cavity is formed in the upper surface of the forging lower die, and the upper die cavity and the lower die cavity are matched with each other to jointly define a die cavity for forming a control arm.
The die cavity comprises a pre-forging die cavity and a finish forging die cavity; one end of the cavity is provided with a first round boss, and the other end of the cavity is provided with a second round boss and an upward groove; a first long boss and a second long boss are arranged between the first round boss and the second round boss, and a transition groove is arranged between the first long boss and the second long boss; a convex groove facing the cavity is also arranged on one side of the cavity; the groove in the final forging cavity is also provided with a bulge.
The upper insert is a trapezoidal insert with a small upper part and a large lower part, and the included angle between the contact surface of the trapezoidal insert and the forging upper die and the vertical direction is 5-10 degrees.
The lower insert is a trapezoidal insert with a large upper part and a small lower part, and the included angle between the contact surface of the trapezoidal insert and the forging lower die and the vertical direction is 5-10 degrees.
The fillet of the periphery of the pre-forging cavity is larger than that of the periphery of the finish forging cavity.
Positioning bosses are arranged at two ends of a diagonal line of the upper forging die, and positioning grooves matched with the positioning bosses are arranged at two ends of the diagonal line of the lower forging die; the mould can be quickly and accurately positioned when the mould is closed.
The upper die base and the lower die base are also provided with hoisting holes, U-shaped mounting grooves are formed in the left end and the right end, the hoisting holes are convenient for the die to move, and the U-shaped mounting grooves are convenient for the die to be mounted and dismounted on the equipment workbench.
The finish forging upper die, the finish forging lower die, the upper insert and the lower insert are made of 5CrNiMo materials through a heat treatment process; the heat treatment process comprises sectional heating, including quenching and tempering, wherein a vacuum atmosphere heat treatment furnace is adopted for sectional heating during quenching, and the vacuum is firstly pumped to 10 DEG-2 And introducing Ar gas to 0.05Pa for gas washing, performing reciprocating air suction-gas washing for more than 3 times, and finally introducing Ar gas to 0.05Pa, wherein the whole heat treatment process is performed under the protection of the Ar gas, and the specific steps comprise firstly heating the mould to 450 ~ 650 ℃ at the heating rate of 3-5 ℃/min, preserving heat for 3-6 h, then slowly heating to 820 ~ 880 ℃ at the heating rate of 1-3 ℃/min, preserving heat for 4-8 h, then cooling to 760 ~ 820 ℃ in air in a delayed manner, then rapidly placing the mould into oil at 30 ~ 60 ℃ for cooling, and finally heating the mould to 320 ~ 420 ℃ in a vacuum heat treatment furnace in time, preserving heat for 10-20h, and tempering.
The forging die is also provided with an automatic intelligent temperature control device for accurately controlling the forging temperature, and the temperature control accuracy is +/-1 ℃.
Automatic temperature intelligent control device, including upper portion accuse temperature seat and lower part accuse temperature seat, the inner wall of upper portion accuse temperature seat and lower part accuse temperature seat is equipped with induction coil, the lower terminal surface of upper portion accuse temperature seat fixed upper die base will forge the mould and enclose and be higher than and forge mould lower terminal surface, the up end of lower part accuse temperature seat fixed lower die base and forge the lower mould and enclose and be higher than the up end of forging the lower mould, upper portion accuse temperature seat diameter is less than lower part accuse temperature seat diameter, when the mould is closed, upper portion accuse temperature seat and the mutual block of lower part accuse temperature seat, during the die sinking, the upper and lower part is opened, but the accurate control forges the temperature, but overcome aluminum alloy material forges the temperature range narrowly and the fracture, crystalline grain and inhomogeneous class defect problem, guarantee to forge aluminum alloy control arm quality.
The final forging die for the aluminum alloy automobile control arm is simple in structure, the die cavity is reasonably provided with the boss, the convex groove and the groove, so that blanks in the die cavity are reasonably distributed, the blanks are saved, the blank utilization rate is high, the automatic temperature intelligent control device is arranged, the automatic temperature intelligent control device is adopted for accurate temperature control in the forging process, the forging temperature can be accurately controlled, the problems of narrow forging temperature range, cracking, large and uneven crystal grains and the like of an aluminum alloy material are overcome, and the quality of the forged aluminum alloy control arm is ensured.
Drawings
FIG. 1 is a three-dimensional structure diagram of a forging die for an aluminum alloy automobile control arm;
FIG. 2 is a front sectional view of an aluminum alloy automobile control arm forging die;
FIG. 3 is a schematic structural view of a forging upper die;
FIG. 4 is an enlarged view of a portion A of FIG. 2;
in the figure: 1. the guide post 2, the guide sleeve 3, the upper die holder 4, the forging upper die 5, the upper insert 6, the forging lower die 7, the lower insert 8, the insert screw rod 9, the lower die holder 10, the hoisting hole 11, the U-shaped mounting groove 12, the finish forging die cavity 13, the pre-forging die cavity 14, the first round boss 15, the first long boss 16, the transition groove 17, the second long boss 18, the bulge 19, the groove 20, the second round boss 21, the convex groove 22, the positioning boss 23, the upper temperature control seat 24, the induction coil 25 and the lower temperature control seat.
Detailed Description
The invention will be further elucidated with reference to the drawings and examples, without however being limited thereto.
Example (b):
as shown in fig. 1 and 2, the aluminum alloy automobile control arm forging die comprises an upper die holder 3 and a lower die holder 9, wherein the upper die holder 3 and the lower die holder 9 are connected through a guide pillar 1, and the guide pillar 1 connected with the upper die holder 3 is provided with a guide sleeve 2; the lower end face of the upper die base 3 is provided with a downward upper forging groove, a forging upper die 4 is arranged in the upper forging groove, an upper insert 5 is arranged between the forging upper die 4 and the upper forging groove, the upper insert 5 is fixedly connected with the upper die base 4 through an insert screw 8, and the lower surface of the forging upper die 4 is provided with a downward upper die cavity;
the upper end face of the lower die base 9 is provided with an upward lower forging groove, a forging lower die 6 is arranged in the lower forging groove, a lower insert 7 is arranged between the forging lower die 6 and the lower forging groove, the lower insert 7 is fixedly connected with the lower die base 9 through an insert screw 8, an upward lower die cavity is arranged on the upper surface of the forging lower die 6, and the upper die cavity and the lower die cavity are matched with each other to define a die cavity for forming a control arm.
As shown in fig. 3, the die cavities comprise a pre-forging die cavity 13 and a finish forging die cavity 12; one end of the cavity is provided with a first round boss 14, and the other end is provided with a second round boss 20 and an upward groove 19; a first long boss 15 and a second long boss 17 are also arranged between the first round boss 14 and the second round boss 20, and a transition groove 16 is arranged between the first long boss 15 and the second long boss 17; a convex groove 21 facing the cavity is also arranged on one side of the cavity; the grooves 19 in the finish forging die cavity are also provided with protrusions 18.
As shown in fig. 4, the upper insert 5 is a trapezoidal insert with a small upper part and a large lower part, and an included angle between a contact surface of the trapezoidal insert and the forging upper die 4 and the vertical direction is 5-10 °.
The lower insert 7 is a trapezoidal insert with a large upper part and a small lower part, and the included angle between the contact surface of the trapezoidal insert and the forging lower die 6 and the vertical direction is 5-10 degrees.
The upper insert and the lower insert are trapezoidal inserts, so that the upper die and the lower die can be effectively prevented from falling off during forging, the upper die and the lower die are more firmly locked during forging, the assembly and the disassembly are convenient, and the safety performance is improved.
The fillet of the periphery of the pre-forging cavity 13 is larger than that of the periphery of the finish forging cavity 12.
The two ends of the diagonal line of the upper forging die 4 are provided with positioning bosses 22, and the two ends of the diagonal line of the lower forging die 6 are provided with positioning grooves matched with the positioning bosses 22; the mould can be quickly and accurately positioned when the mould is closed.
The upper die base 4 and the lower die base 9 are further provided with hoisting holes 10, U-shaped mounting grooves 11 are formed in the left end and the right end of the upper die base, the hoisting holes 10 facilitate moving of the die, and the U-shaped mounting grooves 11 facilitate mounting and dismounting of the die on the equipment workbench.
The finish forging upper die 4, the finish forging lower die 5, the upper insert 5 and the lower insert 7 are made of 5CrNiMo materials through a heat treatment process; the heat treatment process comprises sectional heating, including quenching and tempering, wherein a vacuum atmosphere heat treatment furnace is adopted for sectional heating during quenching, and the vacuum is firstly pumped to 10 DEG-2 Introducing Ar gas to 0.05Pa for gas washing, repeating the steps for more than 3 times, introducing Ar gas to 0.05Pa, and performing heat treatment under protection of Ar gasThe method comprises the specific steps of firstly heating the mould to 450 ~ 650 ℃ at a heating rate of 3-5 ℃/min, preserving heat for 3-6 h, then slowly heating to 820 ~ 880 ℃ at a heating rate of 1-3 ℃/min, preserving heat for 4-8 h, then cooling in air to 760 ~ 820 ℃ in a delayed manner, then quickly putting the mould into oil at 30 ~ 60 ℃ for cooling, and finally heating the mould in a vacuum heat treatment furnace to 320 ~ 420 ℃ in time, preserving heat for 10-20h and tempering.
As shown in fig. 1 and 2, the forging die is further provided with an intelligent automatic temperature control device for accurately controlling the forging temperature, wherein the temperature control accuracy is ± 1 ℃.
Automatic temperature intelligent control device, including upper portion temperature control seat 23 and lower part temperature control seat 25, the inner wall of upper portion temperature control seat 23 and lower part temperature control seat 25 is equipped with induction coil 24, upper portion temperature control seat 23 is fixed and will forge upper die 4 and enclose and be higher than forging upper die 4 lower end face at the lower terminal surface of upper die base 3, lower part temperature control seat 25 is fixed at the up end of die holder 9 and forges the up end that lower mould 6 encloses and be higher than forging lower mould 6, upper portion temperature control seat 23 diameter is less than lower part temperature control seat 25 diameter, when the mould is closed, upper portion temperature control seat 23 and lower part temperature control seat 25 block each other, during the die sinking, upper and lower part is opened, can accurate control forging temperature, overcome the defects such as aluminium alloy material forging temperature range is narrow and the fracture, the crystalline grain is thick and inhomogeneous problem, ensure to forge aluminium alloy control arm quality.
Claims (10)
1. A forging die for an aluminum alloy automobile control arm comprises an upper die holder and a lower die holder, wherein the upper die holder and the lower die holder are connected through a guide pillar; the lower end face of the upper die base is provided with a downward upper forging groove, a forging upper die is arranged in the upper forging groove, an upper insert is arranged between the forging upper die and the upper forging groove, the upper insert is fixedly connected with the upper die base through an insert screw, and the lower surface of the forging upper die is provided with a downward upper die cavity;
the upper end face of the lower die holder is provided with an upward lower forging groove, a forging lower die is arranged in the lower forging groove, a lower insert is arranged between the forging lower die and the lower forging groove, the lower insert is fixedly connected with the lower die holder through an insert screw, an upward lower die cavity is formed in the upper surface of the forging lower die, and the upper die cavity and the lower die cavity are matched with each other to jointly define a die cavity for forming a control arm.
2. The aluminum alloy automobile control arm forging die as recited in claim 1, wherein the die cavities comprise a pre-forging die cavity and a finish forging die cavity; one end of the cavity is provided with a first round boss, and the other end of the cavity is provided with a second round boss and an upward groove; a first long boss and a second long boss are arranged between the first round boss and the second round boss, and a transition groove is arranged between the first long boss and the second long boss; a convex groove facing the cavity is also arranged on one side of the cavity; the groove in the final forging cavity is also provided with a bulge.
3. The aluminum alloy automobile control arm forging die as recited in claim 1, wherein the upper insert is a trapezoidal insert with a small upper part and a large lower part, and an included angle between a contact surface of the trapezoidal insert and the forging upper die and a vertical direction is 5-10 degrees.
4. The aluminum alloy automobile control arm forging die as recited in claim 1, wherein the lower insert is a trapezoidal insert with a large upper part and a small lower part, and an included angle between a contact surface of the trapezoidal insert and the forging lower die and a vertical direction is 5-10 degrees.
5. The aluminum alloy automobile control arm forging die as recited in claim 1, wherein the round angle of the periphery of the pre-forging cavity is larger than that of the periphery of the finish forging cavity.
6. The aluminum alloy automobile control arm forging die as recited in claim 1, wherein the upper forging die is provided with positioning bosses at two ends of a diagonal line, and the lower forging die is provided with positioning grooves at two ends of the diagonal line, wherein the positioning grooves are matched with the positioning bosses.
7. The aluminum alloy automobile control arm forging die as recited in claim 1, wherein the upper die holder and the lower die holder are further provided with hoisting holes, and the left end and the right end of the upper die holder and the lower die holder are provided with U-shaped mounting grooves.
8. The aluminum alloy automobile control arm forging die as recited in claim 1, wherein the finish forging upper die, the finish forging lower die, the upper insert and the lower insert are made of 5CrNiMo materials through a heat treatment process;
the heat treatment process comprises sectional heating, including quenching and tempering, wherein a vacuum atmosphere heat treatment furnace is adopted for sectional heating during quenching, and the vacuum is firstly pumped to 10 DEG-2 And introducing Ar gas to 0.05Pa for gas washing, performing reciprocating air suction-gas washing for more than 3 times, and finally introducing Ar gas to 0.05Pa, wherein the whole heat treatment process is performed under the protection of the Ar gas, and the specific steps comprise firstly heating the mould to 450 ~ 650 ℃ at the heating rate of 3-5 ℃/min, preserving heat for 3-6 h, then heating to 820 ~ 880 ℃ at the heating rate of 1-3 ℃/min, preserving heat for 4-8 h, then cooling to 760 ~ 820 ℃ in the air in a delayed manner, then rapidly putting the mould into oil at 30 ~ 60 ℃ for cooling, and finally heating the mould to 320 ~ 420 ℃ in a vacuum heat treatment furnace, preserving heat for 10-20h, and tempering.
9. The aluminum alloy automobile control arm forging die as claimed in claim 1, wherein an automatic intelligent temperature control device is further arranged on the forging die and used for accurately controlling the forging temperature, and the temperature control accuracy is +/-1 ℃.
10. The aluminum alloy automobile control arm forging die set forth in claim 9, wherein the automatic temperature intelligent control device comprises an upper temperature control seat and a lower temperature control seat, induction coils are arranged on inner walls of the upper temperature control seat and the lower temperature control seat, the upper temperature control seat is fixed on a lower end face of the upper die base, surrounds the forging upper die and is higher than a lower end face of the forging upper die, the lower temperature control seat is fixed on an upper end face of the lower die base, surrounds the forging lower die and is higher than an upper end face of the forging lower die, the diameter of the upper temperature control seat is smaller than that of the lower temperature control seat, and the upper temperature control seat and the lower temperature control seat are mutually clamped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911095499.8A CN110653319B (en) | 2019-11-11 | 2019-11-11 | Forging die for aluminum alloy automobile control arm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911095499.8A CN110653319B (en) | 2019-11-11 | 2019-11-11 | Forging die for aluminum alloy automobile control arm |
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| Publication Number | Publication Date |
|---|---|
| CN110653319A true CN110653319A (en) | 2020-01-07 |
| CN110653319B CN110653319B (en) | 2024-08-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911095499.8A Active CN110653319B (en) | 2019-11-11 | 2019-11-11 | Forging die for aluminum alloy automobile control arm |
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| CN (1) | CN110653319B (en) |
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| CN111974925A (en) * | 2020-07-29 | 2020-11-24 | 宁波拓普集团股份有限公司 | Forging die and forging process for aluminum alloy new energy cooling plate |
| CN114406162A (en) * | 2022-01-26 | 2022-04-29 | 江苏天南铝材锻造有限公司 | Production process of automobile connecting rod |
| CN115090760A (en) * | 2022-05-27 | 2022-09-23 | 遵义航天新力精密铸锻有限公司 | Aeroengine mounting support point bending tool |
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| CN115090760A (en) * | 2022-05-27 | 2022-09-23 | 遵义航天新力精密铸锻有限公司 | Aeroengine mounting support point bending tool |
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| Publication number | Publication date |
|---|---|
| CN110653319B (en) | 2024-08-09 |
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