CN100489138C - Balancing shaft and its forging method for engine - Google Patents
Balancing shaft and its forging method for engine Download PDFInfo
- Publication number
- CN100489138C CN100489138C CNB2007100783957A CN200710078395A CN100489138C CN 100489138 C CN100489138 C CN 100489138C CN B2007100783957 A CNB2007100783957 A CN B2007100783957A CN 200710078395 A CN200710078395 A CN 200710078395A CN 100489138 C CN100489138 C CN 100489138C
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- Prior art keywords
- balance shaft
- forging
- engine
- blank
- billet
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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.)
- Expired - Fee Related
Links
- 238000005242 forging Methods 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 32
- 239000000463 material Substances 0.000 claims abstract description 20
- 239000010955 niobium Substances 0.000 claims abstract description 18
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 10
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims abstract description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 9
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000010438 heat treatment Methods 0.000 claims abstract description 8
- 239000010949 copper Substances 0.000 claims abstract description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910000975 Carbon steel Inorganic materials 0.000 claims abstract description 5
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 5
- 239000010962 carbon steel Substances 0.000 claims abstract description 5
- 239000000126 substance Substances 0.000 claims abstract description 5
- 238000004381 surface treatment Methods 0.000 claims abstract description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052802 copper Inorganic materials 0.000 claims abstract description 4
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 4
- 239000011574 phosphorus Substances 0.000 claims abstract description 4
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 4
- 239000010703 silicon Substances 0.000 claims abstract description 4
- 238000012937 correction Methods 0.000 claims abstract description 3
- 239000000203 mixture Substances 0.000 claims abstract 3
- 229910052717 sulfur Inorganic materials 0.000 claims abstract 2
- 239000011593 sulfur Substances 0.000 claims abstract 2
- 239000011572 manganese Substances 0.000 claims description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 3
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 2
- 229910052748 manganese Inorganic materials 0.000 claims description 2
- 239000002918 waste heat Substances 0.000 claims 2
- 238000009966 trimming Methods 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 abstract description 11
- 239000010959 steel Substances 0.000 abstract description 11
- 229910052751 metal Inorganic materials 0.000 abstract description 6
- 229910052742 iron Inorganic materials 0.000 abstract description 5
- 239000002184 metal Substances 0.000 abstract description 4
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 229910052720 vanadium Inorganic materials 0.000 abstract description 2
- 239000013078 crystal Substances 0.000 description 9
- 229910001566 austenite Inorganic materials 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 239000004615 ingredient Substances 0.000 description 3
- 239000005864 Sulphur Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000007669 thermal treatment Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000003245 working effect Effects 0.000 description 2
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 229910000954 Medium-carbon steel Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- -1 heating Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229910001562 pearlite Inorganic materials 0.000 description 1
- 235000019362 perlite Nutrition 0.000 description 1
- 239000010451 perlite Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000000930 thermomechanical effect Effects 0.000 description 1
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Landscapes
- Forging (AREA)
Abstract
本发明公开了一种发动机平衡轴及其锻造方法，其化学成分以重量计算，构成为：0.47-0.55%碳、0.17-0.37%硅、0.50-0.80%锰、0.01-0.03%钒、0.001-0.002%铌、磷不大于0.035%、硫不大于0.035%、铜不大于0.17%、余量为铁。其锻造方法是：首先将平衡轴采用的按上述比例制成的碳素钢材料进行截料，再对该截料进行加热及制坯、成型工序制成平衡轴坯料；然后切除平衡轴坯料的毛边及坯料两端头的拔模斜度，将切边后的平衡轴坯料通过输送带输送使该坯料自然冷却而再进行热处理工艺、热校正、表面处理工序而制得发动机平衡轴锻件。此构成和制造方法显著改善了钢的金属组织结构，提高了锻件的机械强度、冲击韧性，且节约了能源。从而提高了产品的质量，延长了产品的使用寿命。The invention discloses an engine balance shaft and a forging method thereof. Its chemical composition is calculated by weight, and consists of: 0.47-0.55% carbon, 0.17-0.37% silicon, 0.50-0.80% manganese, 0.01-0.03% vanadium, 0.001- 0.002% niobium, phosphorus not more than 0.035%, sulfur not more than 0.035%, copper not more than 0.17%, and the balance being iron. The forging method is as follows: first cut off the carbon steel material used for the balance shaft according to the above ratio, then heat the cut material, make a billet, and form a blank of the balance shaft; then cut off the balance shaft blank The draft angle of the raw edge and the two ends of the billet, the trimmed balance shaft billet is transported by the conveyor belt, the billet is naturally cooled, and then the heat treatment process, heat correction, and surface treatment processes are performed to obtain the engine balance shaft forging. The composition and manufacturing method significantly improve the metal structure of the steel, increase the mechanical strength and impact toughness of the forging, and save energy. Thereby improving the quality of the product and prolonging the service life of the product.
Description
One, technical field
The present invention relates to balancing shaft and forging method thereof that a kind of motor car engine is used.
Two, background technology
Balancing shaft is the key part in the auxiliary balance mechanism on automobile engine crankshaft next door, when bent axle rotates, and crankshaft toothed wheel driven equilibrium shaft gear and make the balancing shaft rotation.At this moment, reciprocal inertia force or its moment of the centrifugal force of the generation of the counterbalance weight on the balancing shaft or its moment and bent axle generation balance each other.Owing to the effect of balancing shaft, effectively eliminated the vibration and the noise of engine, improved the comfortableness of taking, increased the weather resistance of automobile and engine.At present, material and forging method thereof that balance shaft of engine adopts are: adopt common medium-carbon steel, make the balancing shaft forging through cutting a material, heating, base, moulding, side cut, correction, thermal treatment, surface treatment procedure.Because mild steel material impurity is more, causes the metallographic structure of balancing shaft forging not good enough, mechanical property is relatively poor, thereby has shortened the work-ing life of product.
Three, summary of the invention
The objective of the invention is to overcome above-mentioned deficiency, and a kind of balancing shaft of Engine and its forging method that can improve balancing shaft forging mechanical property is provided.
Purpose of the present invention realizes by following technical solution: a kind of balance shaft of engine, the chemical ingredients of described engine balance shaft material is calculated by weight, and it constitutes: 0.47-0.55% carbon, 0.17-0.37% silicon, 0.50-0.80% manganese, 0.01-0.03% vanadium, 0.001-0.002% niobium, phosphorus are not more than 0.035%, sulphur is not more than 0.035%, copper is not more than 0.17%, surplus is an iron.
The forging method of above-mentioned balance shaft of engine is: the carbon steel material that the design of at first balancing shaft being adopted is according to the above ratio made cuts material, this section material is heated again, and makes the balancing shaft blank through base, molding procedure again; Adopt the negative deviation cutting die with the burr of excision balancing shaft blank and the pattern draft of blank two ends then, balancing shaft blank after cutting edge carried by conveying belt make this blank naturally cooling be transported to Equipment for Heating Processing to forge back residual heat high-temperature deformation normalizing process, make the engine balance forging shaft through thermal recalibration, surface treatment procedure again.
After adopting the present invention,, can obtain the inherent fine grain steel, significantly improve the metal structure structure of steel, improve the physical strength of forging owing to added vanadium (V), niobium (Nb) metallic element in carbon steel (No. 50) material that balancing shaft adopts.In forging process, can improve Heating temperature, and the crystal grain of steel is still tiny,--residual heat high-temperature deformation normalizing process after----promptly forges has improved the impelling strength of forging, and has saved the energy so can utilize residual forging heat directly to implement next step thermal treatment process through naturally cooling.Thereby improved the quality of product, prolonged the work-ing life of product.
Four, embodiment
Balance shaft of engine of the present invention, the chemical ingredients of described engine balance shaft material is calculated by weight, and it constitutes: 0.47-0.55% carbon (C), 0.17-0.37% silicon (Si), 0.50-0.80% manganese (Mn), 0.01-0.03% vanadium (V), 0.001-0.002% niobium (Nb), phosphorus (P) are not more than 0.035%, sulphur (S) is not more than 0.035%, copper (Cu) is not more than 0.17%, surplus is iron (Fe).As not containing vanadium (V), niobium (Nb) two elements, then this material is called steel No. 50 in the chemical ingredients of above-mentioned engine balance shaft material; As contain vanadium (V), niobium (Nb) two elements, then this material is called special No. 50 steel.
Be the physical strength of raising balancing shaft forging, necessary its crystallization crystal grain of refinement, so special No. 50 steel of innovative design promptly add metallic element vanadium (V), niobium (Nb) in No. 50 steel, this two element also can be described as grain-refining agent.Vanadium (V), niobium (Nb) can form compound VC, NbC with carbon (C) atom in the steel, and are present in austenite grain boundary with the particle of disperse phase, hindering growing up of austenite crystal, thereby refinement crystal grain.Make steel in forging process, recrystallize does not take place in austenite crystal, directly changes ferrite into, and the result has formed tangible thinning microstructure.The mechanism of this crystal grain thinning, can also set forth with crystal boundary iron atom self-diffusion theory: after alloying element vanadium (V), niobium (Nb) etc. dissolves in austenite, can strengthen the linkage force between atoms metal, reduce the self-diffusion coefficient of iron atom, thereby the transition process that the self-diffusion of crystal boundary by iron atom produced is obstructed, the grain growth speed that slowed down has finally obtained tiny austenite crystal.Thereby significantly improved the metal structure structure of steel, improved the physical strength of forging.
The standard weave of balancing shaft forging is a perlite, and content of pearlite in alloy is not less than 60%; Its hardness is 220-250HB, tensile strength (σ
b) more than or equal to 800MPa, yield strength (σ
s) more than or equal to 490MPa.
The forging method of above-mentioned balance shaft of engine is: the carbon steel material (adopting the bar stapling machine) that the design of at first balancing shaft being adopted is according to the above ratio made cuts material, again this section material (employing intermediate frequency furnace) is heated, pass through base (adopting punch press and air hammer) again, moulding (adopting 1000 tons or 1600 tons of pressing machinees) operation is made the balancing shaft blank; (pass through punch press) then and adopt the negative deviation cutting die with the burr of excision balancing shaft blank and the pattern draft (i.e. Chuan Xin side cut operation) of blank two ends, make this blank naturally cooling be transported to Equipment for Heating Processing (employing normalizing furnace) by conveying belt (about 4 meters) conveying the balancing shaft blank after cutting edge and heat-treat technology (i.e. residual heat high-temperature deformation normalizing process after Chuan Xin the forging), pass through thermal recalibration again and (adopt punch press, to eliminate distortion), surface treatment (adopting shot-blasting machine) operation and make the engine balance forging shaft to remove surface oxide layer.At last this engine balance forging shaft is carried out precision work (employing machining center) and makes the balance shaft of engine product, carry out rustproof packing again and dispatch from the factory.
Wherein, forging back residual heat high-temperature deformation normalizing process is a kind of suitable reduction forging and pressing deformation final temperature, carries out the thermomechanical treatment technology of air cooling then, can shorten and simplify the thermal cycle, has saved the energy, has improved production efficiency.This technology can effectively improve the impelling strength of forging and reduce brittle transition temperature, improves its antiwear property and fatigue resistance.
The temperature of above-mentioned (intermediate frequency furnace) heating process can be 1190 ± 10 degrees centigrade; The temperature of base, molding procedure 〉=1080 degree centigrade; Forge temperature 〉=860 degree centigrade of back residual heat high-temperature deformation normalizing process.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100783957A CN100489138C (en) | 2007-04-17 | 2007-04-17 | Balancing shaft and its forging method for engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100783957A CN100489138C (en) | 2007-04-17 | 2007-04-17 | Balancing shaft and its forging method for engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101029371A CN101029371A (en) | 2007-09-05 |
| CN100489138C true CN100489138C (en) | 2009-05-20 |
Family
ID=38714923
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100783957A Expired - Fee Related CN100489138C (en) | 2007-04-17 | 2007-04-17 | Balancing shaft and its forging method for engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100489138C (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009036067A1 (en) * | 2009-08-04 | 2011-02-10 | Schaeffler Technologies Gmbh & Co. Kg | Method for producing a balancing shaft |
| CN102989943A (en) * | 2012-08-22 | 2013-03-27 | 昌利锻造有限公司 | Processing method of automotive balancing shaft |
| CN102989983A (en) * | 2012-08-22 | 2013-03-27 | 昌利锻造有限公司 | Forging method of automobile engine crankshaft |
| CN102825205A (en) * | 2012-09-20 | 2012-12-19 | 江苏金源锻造股份有限公司 | Forging method of balance shaft of engine |
| CN103643016A (en) * | 2013-11-18 | 2014-03-19 | 浙江跃进机械有限公司 | Production method of motorcycle lower yoke plate |
| CN103639647B (en) * | 2013-11-18 | 2016-04-06 | 浙江跃进机械有限公司 | The production technology of motorcycle lower link plate |
| CN106424495A (en) * | 2015-08-13 | 2017-02-22 | 温州三联锻造有限公司 | Automobile gearbox hub forged piece and forging method thereof |
| CN106427549A (en) * | 2015-08-13 | 2017-02-22 | 温州三联锻造有限公司 | Retaining ring of automobile damper and forging method of retaining ring |
-
2007
- 2007-04-17 CN CNB2007100783957A patent/CN100489138C/en not_active Expired - Fee Related
Non-Patent Citations (3)
| Title |
|---|
| LZ 50钢火车轴热加工连续生产线的研制. 王树海等.工业炉，第24卷第4期. 2002 * |
| 微合金中碳非调质钢的分析与综述. 陆在庆等.机械工程材料，第3期. 1985 * |
| 非调质微合金锻件用钢. 章洪涛等.机械工程材料，第2期. 1987 * |
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| Publication number | Publication date |
|---|---|
| CN101029371A (en) | 2007-09-05 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Wuhu Sanlian Forge Co., Ltd. Assignor: Sanlian Forging Co., Ltd., Wenzhou Contract fulfillment period: 2008.8.1 to 2013.7.31 contract change Contract record no.: 2009340000310 Denomination of invention: Balancing shaft and its forging method for engine Granted publication date: 20090520 License type: Exclusive license Record date: 2009.9.10 |
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| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.8.1 TO 2013.7.31; CHANGE OF CONTRACT Name of requester: WUHU SANLIAN FORGNG CO., LTD. Effective date: 20090910 |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090520 Termination date: 20140417 |