CN103692160B - The forging method of stabiliser bar for a kind of excavator - Google Patents
The forging method of stabiliser bar for a kind of excavator Download PDFInfo
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- CN103692160B CN103692160B CN201310669128.2A CN201310669128A CN103692160B CN 103692160 B CN103692160 B CN 103692160B CN 201310669128 A CN201310669128 A CN 201310669128A CN 103692160 B CN103692160 B CN 103692160B
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- stabiliser bar
- molten steel
- temperature
- blank
- forging
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- 239000003381 stabilizer Substances 0.000 title claims abstract description 30
- 238000005242 forging Methods 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 16
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 19
- 239000010959 steel Substances 0.000 claims abstract description 19
- 238000009750 centrifugal casting Methods 0.000 claims abstract description 11
- 238000010079 rubber tapping Methods 0.000 claims abstract description 7
- 239000000203 mixture Substances 0.000 claims abstract description 4
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 4
- 239000002893 slag Substances 0.000 claims abstract description 4
- 239000000126 substance Substances 0.000 claims abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 15
- 238000005452 bending Methods 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 10
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- 238000005422 blasting Methods 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 5
- 239000004411 aluminium Substances 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 238000005266 casting Methods 0.000 claims description 3
- 210000000038 chest Anatomy 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 238000004806 packaging method and process Methods 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 claims description 3
- 229960001763 zinc sulfate Drugs 0.000 claims description 3
- 229910000368 zinc sulfate Inorganic materials 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 claims description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims 1
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 229910052750 molybdenum Inorganic materials 0.000 claims 1
- 239000011733 molybdenum Substances 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 229910052804 chromium Inorganic materials 0.000 abstract 1
- 229910052802 copper Inorganic materials 0.000 abstract 1
- 229910052748 manganese Inorganic materials 0.000 abstract 1
- 229910052718 tin Inorganic materials 0.000 abstract 1
- 239000003973 paint Substances 0.000 description 2
- 238000005480 shot peening Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000007115 recruitment Effects 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/002—Hybrid process, e.g. forging following casting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D13/00—Centrifugal casting; Casting by using centrifugal force
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/16—Casting in, on, or around objects which form part of the product for making compound objects cast of two or more different metals, e.g. for making rolls for rolling mills
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/008—Ferrous alloys, e.g. steel alloys containing tin
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/28—Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/50—Ferrous alloys, e.g. steel alloys containing chromium with nickel with titanium or zirconium
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Forging (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
The forging method that the invention discloses a kind of excavator stabiliser bar, comprises the following steps: centrifugal casting blank. Outer centrifugal casting step: after outer molten steel, should the percentage by weight of controlling each chemical composition in molten steel meet following requirement: C 0.23～0.32%, Mn 0.17～0.28%, Cr 0.15-0.20%, Si 0.25～0.35%, Ti 0.03-0.05%, P 0.034-0.045%, S 0.016-0.035%, Ni 0.28～0.32%, Li 0.035～0.045%, Sn 0.15～0.25%, Cu 0.02-0.06%, surplus Fe, molten steel tapping temperature is 1550 DEG C～1650 DEG C, by 5～6kg/m2Add covering slag to carry out calmness and process, outer pouring temperature is 1500 DEG C～1550 DEG C, and cold type inner wall rotational line speed is controlled at 20～25m/s; The present invention makes it be beneficial to large batch of industrialized production, and the phenomenon that has reduced appearance folder dirt in forging process, has been not fully filled, and the mechanical property of product is further improved, and has saved product materials, has improved the die life of product.
Description
Technical field
The present invention relates to the forging method of a kind of excavator stabiliser bar.
Background technology
Stabiliser bar, as the vitals in automotive suspension parts, can improve the roll angular rigidity of suspension, before and after adjustingSuspension inclination angle stiffness ratio, to ensure that automobile has the good stability of travelling, thereby ensures vehicle safety and comfortableness, smooth-goingProperty. In industry general producer in the time of surface treatment, be shot-peening or not shot-peening be directly coated with antirust paint, after anti-paint is dry, brush again pitch-dark,This coating corrosion-resistant, service life is short, has potential safety hazard.
Summary of the invention
The forging method that the object of this invention is to provide a kind of excavator stabiliser bar, makes it be beneficial to large batch of industrializationProduction, and reduced in forging process and occurred the phenomenon that folder is dirty, be not fully filled, the mechanical property of product further improves, and savesProduct materials, the die life of having improved product.
Technical scheme of the present invention is as follows:
A forging method for stabiliser bar for excavator, comprises the following steps:
A, centrifugal casting blank
1) outer centrifugal casting step: after outer molten steel, control the percentage by weight of each chemical composition in molten steelShould meet following requirement: C0.23～0.32%, Mn0.17～0.28%, Cr0.15-0.20%, Si0.25～0.35%,Ti0.03-0.05％、P0.034-0.045％、S0.016-0.035％、Ni0.28～0.32％、Li0.035～0.045%, Sn0.15～0.25%, Cu0.02-0.06%, surplus Fe, molten steel tapping temperature is 1550 DEG C～1650 DEG C, presses5～6kg/m2 adds covering slag to carry out calmness processing, and outer pouring temperature is 1500 DEG C～1550 DEG C, cold type inner wall rotation linear speedDegree is controlled at 20～25m/s;
2) intermediate layer and core centrifugal casting step: following weight portion raw material is put into melting in intermediate frequency furnace: 1.5-2.5Molybdenum, the zinc sulfate of 2.0-3.0 part, the nickel of 1.4-1.6 part, the aluminium ingot of 2.2-3.4 part, the steel scrap of 30-38 part, 34-45 part of partScrap iron and the foundry returns of 10-12 part, molten steel tapping temperature is 1500 DEG C～1550 DEG C, treats that outer inwall interface temperature drops to1300 DEG C～1350 DEG C time, pour into a mould intermediate layer, pouring molten steel temperature is 1400 DEG C～1440 DEG C, and cold mould rotary speed keeps 1350-1500r/min, after intermediate layer thickness reaches 90～100mm, fills core and obtains the centrifugal strand of stabiliser bar to casting mold inside;
B, forging step
1) the centrifugal strand of stabiliser bar of, selecting according to stabiliser bar model carries out sawing, the size of blanking blank and forging workSkill code is consistent, and range estimation saw kerf gradient is no more than 2 °, and burr is not more than 2mm; 2), the blank heating is placed on and beats oxide skinOxide skin to blank surface on machine is cleared up; 3) the press-bending impression of, the blank of having cleared up being put into hammer forging die is pressedCurved, bang one hammer, then overturns 270 °, blank is put into the terminal section impression of hammer forging die, and the temperature of press-bending is controlled at 1200 DEG C～1280 DEG C, in press-bending process, constantly clear up the oxide skin in press-bending thorax with compressed air; C, heat treatment
Stabiliser bar after step b forges is heated to 900 DEG C and be incubated 1-2h, and oil cooling is not to higher than heavy after 100 DEG CNewly be heated to the temperature range of 680 DEG C-750 DEG C and be incubated 2h, water-cooled afterwards; After temper, then by the head of stabiliser barPortion is heated to 300-380 DEG C, insulation 4-5 hour, and the cooling processing of then spraying, the afterbody of stabiliser bar, at 900-1020 DEG C, is incubated6-8 hour, then air cooling, last stabiliser bar middle part heat again to temperature be 150～180 DEG C, insulation 2-3 hour, puts into iron caseMiddle cooling in heap;
D, by the workpiece Shot Blasting after heat treatment;
E, by the piece packaging of Shot Blasting.
The present invention is by technique scheme, and overall structure is scientific and reasonable, when use, and only need stablizing different modelBar, according to length, owing to having the adaptability of adjustable different model, when production, only need once be heated to spindle nose technique instituteNeed temperature, just can one-shot forming, thus, the traditional handicraft trouble that has reduced heating for multiple times and repeatedly forged, the corresponding energy that reducedConsumption, has reduced material consumption and cost and has dropped into, and machining accuracy improves greatly, and compared with prior art stock utilization is by present65% brings up to more than 90%, and power consumption reduces by 70% left and right, and recruitment reduces 3/4ths, and a machine tool two people operate split run canForger part more than 550, improves 4 times of left and right of work efficiency, the good effect highly significant of generation.
It is as follows that mechanical property of the present invention detects data:
Tensile strength sigma b (MPa): >=1044
Yield strength σ s (MPa): >=922
Percentage elongation δ 5 (%): >=13
Contraction percentage of area ψ (%): >=54
Impact energy Ak v (J): >=67
Notched bar impact strength α kv (J/cm2): >=77
Hardness :≤223HB
Detailed description of the invention
A forging method for stabiliser bar for excavator, comprises the following steps:
A, centrifugal casting blank
1) outer centrifugal casting step: after outer molten steel, control the percentage by weight of each chemical composition in molten steelShould meet following requirement: C0.23～0.32%, Mn0.17～0.28%, Cr0.15-0.20%, Si0.25～0.35%,Ti0.03-0.05％、P0.034-0.045％、S0.016-0.035％、Ni0.28～0.32％、Li0.035～0.045%, Sn0.15～0.25%, Cu0.02-0.06%, surplus Fe, molten steel tapping temperature is 1550 DEG C～1650 DEG C, presses5～6kg/m2 adds covering slag to carry out calmness processing, and outer pouring temperature is 1500 DEG C～1550 DEG C, cold type inner wall rotation linear speedDegree is controlled at 20～25m/s;
2) intermediate layer and core centrifugal casting step: following weight portion raw material is put into melting in intermediate frequency furnace: 1.5-2.5Molybdenum, the zinc sulfate of 2.0-3.0 part, the nickel of 1.4-1.6 part, the aluminium ingot of 2.2-3.4 part, the steel scrap of 30-38 part, 34-45 part of partScrap iron and the foundry returns of 10-12 part, molten steel tapping temperature is 1500 DEG C～1550 DEG C, treats that outer inwall interface temperature drops to1300 DEG C～1350 DEG C time, pour into a mould intermediate layer, pouring molten steel temperature is 1400 DEG C～1440 DEG C, and cold mould rotary speed keeps 1350-1500r/min, after intermediate layer thickness reaches 90～100mm, fills core and obtains the centrifugal strand of stabiliser bar to casting mold inside;
B, forging step
1) the centrifugal strand of stabiliser bar of, selecting according to stabiliser bar model carries out sawing, the size of blanking blank and forging workSkill code is consistent, and range estimation saw kerf gradient is no more than 2 °, and burr is not more than 2mm; 2), the blank heating is placed on and beats oxide skinOxide skin to blank surface on machine is cleared up; 3) the press-bending impression of, the blank of having cleared up being put into hammer forging die is pressedCurved, bang one hammer, then overturns 270 °, blank is put into the terminal section impression of hammer forging die, and the temperature of press-bending is controlled at 1200 DEG C～1280 DEG C, in press-bending process, constantly clear up the oxide skin in press-bending thorax with compressed air; C, heat treatment
Stabiliser bar after step b forges is heated to 900 DEG C and be incubated 1-2h, and oil cooling is not to higher than heavy after 100 DEG CNewly be heated to the temperature range of 680 DEG C-750 DEG C and be incubated 2h, water-cooled afterwards; After temper, then by the head of stabiliser barPortion is heated to 300-380 DEG C, insulation 4-5 hour, and the cooling processing of then spraying, the afterbody of stabiliser bar, at 900-1020 DEG C, is incubated6-8 hour, then air cooling, last stabiliser bar middle part heat again to temperature be 150～180 DEG C, insulation 2-3 hour, puts into iron caseMiddle cooling in heap;
D, by the workpiece Shot Blasting after heat treatment;
E, by the piece packaging of Shot Blasting.
Claims (1)
1. a forging method for stabiliser bar for excavator, is characterized in that, comprises the following steps:
A, centrifugal casting blank
1) outer centrifugal casting step: after outer molten steel, control the percentage by weight of each chemical composition in molten steel and should expireFoot is stated requirement: C0.23～0.32%, Mn0.17～0.28%, Cr0.15-0.20%, Si0.25～0.35%, Ti0.03-0.05％、P0.034-0.045％、S0.016-0.035％、Ni0.28～0.32％、Li0.035～0.045%, Sn0.15～0.25%, Cu0.02-0.06%, surplus Fe, molten steel tapping temperature is 1550 DEG C～1650 DEG C, presses5～6kg/m2Add covering slag to carry out calmness and process, outer pouring temperature is 1500 DEG C～1550 DEG C, cold type inner wall rotation linear speedDegree is controlled at 20～25m/s;
2) intermediate layer and core centrifugal casting step: following weight portion raw material is put into melting in intermediate frequency furnace: 1.5-2.5 partThe aluminium ingot of the zinc sulfate of molybdenum, 2.0-3.0 part, the nickel of 1.4-1.6 part, 2.2-3.4 part, the steel scrap of 30-38 part, 34-45 part uselessThe foundry returns of iron and 10-12 part, molten steel tapping temperature is 1500 DEG C～1550 DEG C, treats that outer inwall interface temperature drops to 1300 DEG C～1350 DEG C time, pour into a mould intermediate layer, pouring molten steel temperature is 1400 DEG C～1440 DEG C, and cold mould rotary speed keeps 1350-1500r/Min, after intermediate layer thickness reaches 90～100mm, fills core and obtains the centrifugal strand of stabiliser bar to casting mold inside;
B, forging step
1) the centrifugal strand of stabiliser bar of, selecting according to stabiliser bar model carries out sawing, the size of blanking blank and Forging Technology ruleJourney is consistent, and range estimation saw kerf gradient is no more than 2 °, and burr is not more than 2mm;
2), the blank heating is placed on dozen oxide skin machine the oxide skin of blank surface is cleared up;
3), press-bending impression that the blank of having cleared up is put into hammer forging die bends, bang one hammer, then overturns 270 °, willBlank is put into the terminal section impression of hammer forging die, and the temperature of press-bending is controlled at 1200 DEG C～1280 DEG C, uses compression in press-bending processAir is constantly cleared up the oxide skin in press-bending thorax;
C, heat treatment
Stabiliser bar after step b forges is heated to 900 DEG C and be incubated 1-2h, and oil cooling is to again not adding after 100 DEG CHeat is to the temperature range of 680 DEG C-750 DEG C and be incubated 2h, water-cooled afterwards; After temper, then the head of stabiliser bar is addedHeat, to 300-380 DEG C, is incubated 4-5 hour, the cooling processing of then spraying, and the afterbody of stabiliser bar is at 900-1020 DEG C, and 6-8 is little in insulationTime, then air cooling, last stabiliser bar middle part heat again to temperature be 150～180 DEG C, insulation 2-3 hour, puts into iron case and pilesCold;
D, by the workpiece Shot Blasting after heat treatment;
E, by the piece packaging of Shot Blasting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310669128.2A CN103692160B (en) | 2013-12-11 | 2013-12-11 | The forging method of stabiliser bar for a kind of excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310669128.2A CN103692160B (en) | 2013-12-11 | 2013-12-11 | The forging method of stabiliser bar for a kind of excavator |
Publications (2)
| Publication Number | Publication Date |
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| CN103692160A CN103692160A (en) | 2014-04-02 |
| CN103692160B true CN103692160B (en) | 2016-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310669128.2A Expired - Fee Related CN103692160B (en) | 2013-12-11 | 2013-12-11 | The forging method of stabiliser bar for a kind of excavator |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105014315A (en) * | 2015-06-29 | 2015-11-04 | 安庆市吉安汽车零件锻轧有限公司 | Forging method of camshaft blank |
| CN106756450A (en) * | 2016-11-17 | 2017-05-31 | 马鞍山市银鼎机械制造有限公司 | A kind of nodular cast iron preparation method of motor base |
| CN111496686B (en) * | 2020-04-24 | 2021-02-02 | 山东普丰园林科技有限公司 | Manufacturing process of high-precision engine crankshaft casting |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2458291C3 (en) * | 1974-12-10 | 1980-11-27 | Bayerisches Leichtmetallwerk, Graf Bluecher Von Wahlstatt Kg, 8000 Muenchen | Forging process |
| GB9413631D0 (en) * | 1994-07-06 | 1994-09-14 | Inco Engineered Prod Ltd | Manufacture of forged components |
| CN102990293A (en) * | 2012-08-22 | 2013-03-27 | 昌利锻造有限公司 | Forging method of automotive stabilizer bar |
| CN103071752A (en) * | 2013-01-21 | 2013-05-01 | 谭哲强 | Forging process of crank blank |
| CN103350203A (en) * | 2013-06-07 | 2013-10-16 | 马鞍山市恒毅机械制造有限公司 | Compound centrifugal casting method for large-scale ring piece |
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Granted publication date: 20160511 |