CN102051523B - High-strength vehicle drive shaft pipe material and shaft pipe manufacturing method - Google Patents
High-strength vehicle drive shaft pipe material and shaft pipe manufacturing method Download PDFInfo
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- CN102051523B CN102051523B CN 200910217836 CN200910217836A CN102051523B CN 102051523 B CN102051523 B CN 102051523B CN 200910217836 CN200910217836 CN 200910217836 CN 200910217836 A CN200910217836 A CN 200910217836A CN 102051523 B CN102051523 B CN 102051523B
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Abstract
The invention relates to a high-strength vehicle drive shaft pipe material and a shaft pipe manufacturing method. The vehicle drive shaft pipe material is characterized by comprising the following components in percentage by weight: C 0.05-0.20, Si 0.05-0.20, Mn 1.00-202, P 0-0.025, S 0-0.010, Al 0.015-0.040, Nb 0.01-0.10 and Ti 0.02-0.16. With respect to the mechanical properties of the vehicle drive shaft pipe material, Rp0.2 (a term for proof strength at non-proportional extension when the non-proportional extension rate is 0.2%) is not less than 600Mpa, Rm (a term for tensile strength) is not less than 700Mpa, A5 (a term for percentage elongation after fracture) is not less than 13%, the material strength is improved by more than 30%, and the material weight is reduced by more than 30%.
Description
Technical field:
The present invention relates to a kind of high-strength vehicle transmission shaft tube material and central siphon manufacture method, for the manufacture field of vehicle transmission central siphon.
Background technology:
Loss of weight is energy-conservation is one of theme of current development of automobile, for cargo truck, reduces certain weight, just can the overloading heavy phase answers the goods of weight, can reduce and manufacture the required raw materials consumption of bicycle simultaneously.
Damage, the wearing and tearing of the main damage forms transmission shaft parts of truck drive shaft, be out of shape and lose transient equilibrium, and the fracture that the damage main manifestations of parts is joint spider and flange york, the damage type that central siphon surrender and distortion occur is comparatively rare, and this is just for realizing that by the strength of materials attenuate and loss of weight provide possibility by improving central siphon.
Find one piece of patent in Japanese Patent, patent inventor: KAWABATAYOSHIKAZU; SAKATA TAKASHI; SAKAGUCHI MASAYUKI; The patent No.: JP2006037205; Article autograph: " METHOD FOR PRODUCING HOLLOW DRIVESHAFT HAVING EXCELLENT FATIGUE RESISTANCE "; Patent content: this patent article be the chemical composition of steel pipe: 0.25 to 0.55%C, Si, Mn and Al, carry out modifier treatment after its moulding, surface compress residual stresses is greater than 216Mpa, and maximum can reach 440Mpa, adds as required Cr in chemical constitution, Mo, W, Ni, Cu, B or Ti, the elements such as Nb and V.
The transmission shaft tube material of domestic common employing at present is that carbon containing is 0.10% left and right, and containing the Nb micro-alloyed hot rolled steel plate of manganese 1.5% left and right, yield strength is 360-470MPa, and tensile strength is 470-580MPa.According to different moment of torsion output requirement, select different external diameters and wall thickness, typical specification has: 63.5 * 2.5,89 * 5,90 * 3,100 * 4,108 * 7,120 * 6,140 * 6 etc.
Hot-rolled steel sheet completes the tubulation process through following operation: ultrasonic inspection-aligning-sawing-tack-inspection after construction (flattening, enlarging, hydraulic pressure etc. the)-packing of hot-rolled steel sheet-slitting-band steel check-material loading-give uncoiling-uncoiling-leveling-shearing butt welding (the TIG)-kink storing-straight fringe forming-outer burr-air cooling of hight frequency welding-removing-water-cooled-sizing-online.
According to the data introduction, the Japanese car transmission shaft is generally 500N/mm by Welded Steel Pipe tensile strength
2.It is 700N/mm that Sumitomo Metal Industries has developed tensile strength
2the used for vehicle transmission shaft Welded Steel Pipe, recently again develop tensile strength be 800N/mm
2product innovation, its carbon content is all in 0.20% left and right, manganese content is between 0.70-1.40%.The vehicle transmission central siphon of Germany and Sweden adopts 20 and the 20Mn2 material of similar China, and its tensile strength is 600-750MPa, and yield strength is at 500-650MPa.
In country, encouraging, under the energy-conservation environment of loss of weight, fully to excavate loss of weight and the lightweight potentiality of automobile component, is the long-term problem that automobile industry material technology personnel face.
Summary of the invention:
The object of the present invention is to provide a kind of high-strength vehicle transmission shaft tube material and central siphon manufacture method, after its central siphon adopts the hot-rolled steel sheet cold-forming, hight frequency welding forms, realize quality control by adjusting moulding, welding condition and low power or metallographic structure parameter, the trial-production central siphon meets hydraulic pressure, flattening and enlarging requirement; Mechanical property is: Rp0.2 >=600MPa, and Rm >=700MPa, A5 >=13%,, the strength of materials improves more than 30%, can realize that loss of weight is more than 30%.
Technical scheme of the present invention is achieved in that high-strength vehicle transmission shaft tube material, it is characterized in that: the truck drive shaft tube material consists of the following composition by weight percentage: C 0.05-0.20, Si 0.05-0.20, Mn 1.00-2.20, P 0-0.025, S 0-0.010, Al 0.015-0.040, Nb0.01-0.10, Ti 0.02-0.16;
The manufacture method of vehicle transmission central siphon is as follows: after the raw material of mentioned component is carried out to slitting, enter feeder and give uncoiling, carry out leveling after uncoiling, the band material connects butt welding (TIG), the kink storing enters straight fringe forming, and carry out hight frequency welding, and to remove outer burr after welding and carry out again after air cooling, water-cooled sizing ultrasonic inspection online, aligning, sawing, tack carry out packing after inspection after construction; It is characterized in that: straight fringe forming is to adopt the German RN120L of Mannasman company Forming Unit: comprise pre-profiling and precisive shaped; During pre-profiling, by one of pre-bending frame, with the row-roll forming process machine, complete, precision moulding machine two sorties, extrusion roll is four-roller type, and reducing mill stand is three sorties, and aligning adopts turks-head roll two sorties; Processing parameter is: roll gap 2.8-3.5mm of fin; Two roll gap 2.6-3.2mm of fin; Row's roller intake condition: high 63-87mm, folding 28-82mm; Row's roller outlet parameter: high 130-182mm, folding 72-100mm; The induction coil front end is apart from extrusion roll distance between center line 132-138mm; Ruhmkorff coil parameter: width 108-128mm, internal diameter 118-153mm; 3 °-5 ° of V-arrangement angular apertures; Extrusion roll outlet size parameter: horizontal 88-125mm, vertical 88-122mm; The technical parameter of hight frequency welding is: adopt Norway EFD400KW High Frequency Solid State device; Rated output: 400KW frequency: 150～250KHZ has load Auto-matching function; Power input (KW) 203-238; Alternating current (A) 100-109; Frequency (KHZ) 174-178; Volts DS (V) 642-652; Output rating (KW) 200-225; Side-play amount %13-20; Welding speed m/min 20-27.
Described weld seam center welded bonds width is controlled in 0.04 ~ 0.19mm scope; The metal streamline ascending angle should be controlled in 45 ° ~ 80 ° scopes, and the heat affected zone width is controlled in 0.36 ~ 0.69 times of scope of wall thickness.
Positively effect of the present invention is by the selecting of reasonable material composition and performance, and rationally adjustment and the formulation of central siphon fabrication process parameters, realize the manufacture of high strength drive central siphon, and on the basis of original design central siphon wall thickness attenuate more than 20%.
Embodiment:
Below in conjunction with embodiment, the present invention will be further described:
Embodiment 1:
Following composition is C 0.080 Si 0.12 Mn 1.23 S 0.002 P0.015 Al 0.039 Nb0.025 by weight percentage, and Ti 0.08 makes Ф 120 * 4 vehicle transmission central siphons; Its central siphon moulding adopts the German RN120L of Mannasman company Forming Unit, comprises pre-profiling and precisive shaped, and pre-profiling is that one of pre-bending frame adds the row-roll forming process machine, precision moulding machine two sorties, extrusion roll is four-roller type, and reducing mill stand is three sorties, and aligning adopts two of turks-head rolls.The processing parameter of Forming Unit is: roll gap 3mm of fin, two roll gap 2.8mm of fin, the high 85mm of row's roller import, folding 30mm; Row's roller exports high 180mm, folding 74mm, and the induction coil front end is apart from extrusion roll distance between center line 135mm, and width of induction coil (mm) 125 internal diameter 150 (mm) V-arrangement angular aperture 4 extrusion roll outlet size level: 121.7mm are vertical: 120.4mm; The processing parameter of Ф 89 * 3.5 vehicle transmission central siphon Forming Unit is: roll gap 3.2mm of fin, two roll gap 3mm of fin, the high 65mm of row's roller import, folding 80mm; Row's roller exports high 132mm, folding 98mm, and the induction coil front end is apart from extrusion roll distance between center line 135mm, and width of induction coil mm 111, internal diameter 121mm, V-arrangement angular aperture 4, extrusion roll outlet size level: 90.5mm is vertical: 88.7mm
Intensity transmission shaft tube welding condition is: adopt Norway EFD400KW High Frequency Solid State device.Rated output: 400KW frequency: 150～250KHZ has load Auto-matching function.
The processing parameter when 1# of hight frequency welding Ф 120 * 4 and 2# vehicle transmission central siphon:
High strength drive central siphon welding region microstructure parameter
1), metal streamline ascending angle
Under the effect of extrusion roll squeeze, the metal at weld seam position flows to inward-outward direction, visible significantly metal streamline under the low power condition, the tangent line of metal streamline and horizontal angle are that the size of metal streamline ascending angle is obvious to the welding intensity effect, its metal streamline ascending angle should be controlled in 45 ° ~ 80 ° scopes, to flattening and the enlarging better performances of this kind of high strength central siphon.
2), weld seam center welded bonds width
Welded bonds is the minimum zone of carbon content, weld seam center, presents white bright thin straight line form, and high strength driving shaft management and control scope processed all can meet the service requirements of transmission shaft tube in 0.04 ~ 0.19mm scope.
3), heat affected zone wall thickness centre width can be controlled in 0.36 ~ 0.69 times of scope of wall thickness.
Embodiment 2:
Following composition is C 0.070 by weight percentage, and Si 0.08, and Mn 1.66, and P 0.011, and S 0.003, and Al 0.038, Nb0.048, and Ti 0.10 makes Ф 89 * 3.5 vehicle transmission central siphons.Its central siphon moulding adopts the German RN120L of Mannasman company Forming Unit, comprises pre-profiling and precisive shaped, and pre-profiling is that one of pre-bending frame adds the row-roll forming process machine, precision moulding machine two sorties, extrusion roll is four-roller type, and reducing mill stand is three sorties, and aligning adopts two of turks-head rolls.The processing parameter of Forming Unit is: roll gap 3mm of fin, two roll gap 2.8mm of fin, the high 85mm of row's roller import, folding 30mm; Row's roller exports high 180mm, folding 74mm, and the induction coil front end is apart from extrusion roll distance between center line 135mm, and width of induction coil (mm) 125 internal diameter 150 (mm) V-arrangement angular aperture 4 extrusion roll outlet size level: 121.7mm are vertical: 120.4mm;
The processing parameter of Ф 89 * 3.5 vehicle transmission central siphon Forming Unit is: roll gap 3.2mm of fin, two roll gap 3mm of fin, the high 65mm of row's roller import, folding 80mm; Row's roller exports high 132mm, folding 98mm, and the induction coil front end is apart from extrusion roll distance between center line 135mm, width of induction coil mm111, internal diameter 121mm, V-arrangement angular aperture 4, extrusion roll outlet size level: 90.5mm is vertical: 88.7mm
Intensity transmission shaft tube welding condition is: adopt Norway EFD400KW High Frequency Solid State device.Rated output: 400KW frequency: 150～250KHZ has load Auto-matching function.The processing parameter when 1# of hight frequency welding Ф 89 * 3.5 and 2# vehicle transmission central siphon
High strength drive central siphon welding region microstructure parameter
1), metal streamline ascending angle
Under the effect of extrusion roll squeeze, the metal at weld seam position flows to inward-outward direction, visible significantly metal streamline under the low power condition, the tangent line of metal streamline and horizontal angle are that the size of metal streamline ascending angle is obvious to the welding intensity effect, its metal streamline ascending angle should be controlled in 45 ° ~ 80 ° scopes, to flattening and the enlarging better performances of this kind of high strength central siphon.
2), weld seam center welded bonds width
Welded bonds is the minimum zone of carbon content, weld seam center, presents white bright thin straight line form, and high strength driving shaft management and control scope processed all can meet the service requirements of transmission shaft tube in 0.04 ~ 0.19mm scope.
3), heat affected zone wall thickness centre width can be controlled in 0.36 ~ 0.69 times of scope of wall thickness.
High strength drive central siphon welding region microstructure parameter
1), metal streamline ascending angle
Under the effect of extrusion roll squeeze, the metal at weld seam position flows to inward-outward direction, visible significantly metal streamline under the low power condition, the tangent line of metal streamline and horizontal angle are that the size of metal streamline ascending angle is obvious to the welding intensity effect, its metal streamline ascending angle should be controlled in 45 ° ~ 80 ° scopes, to flattening and the enlarging better performances of this kind of high strength central siphon.
2), weld seam center welded bonds width
Welded bonds is the minimum zone of carbon content, weld seam center, presents white bright thin straight line form, and high strength driving shaft management and control scope processed all can meet the service requirements of transmission shaft tube in 0.04 ~ 0.19mm scope.
3), heat affected zone wall thickness centre width can be controlled in 0.36 ~ 0.69 times of scope of wall thickness.
Mechanical property is as following table:
Annotate: tension specimen is that vertically the width at parallel length position is 20mm
Slitter: Britain obtains the two-arm swing formula slitting line of Merck & Co., Inc.
The maximum ga(u)ge 8mm maximum width 1500mm that can shear
Tensile strength≤700Mpa yield strength≤560Mpa
In the slitting operation, by the horizontal and vertical gap of meticulous adjustment slitting blade, guarantee that the strip edge edge is smooth neat, make welded tube forming after edge to be welded be approximate parastate, to guarantee welding quality.
The size detection result of production tube
The production tube mechanical properties test
| Specification | Grade of steel | Tensile strength (Mpa) | Yield strength (Mpa) | Unit elongation % |
| Ф120×4 | 1# | 770 | 742 | 18 |
| Ф120×4 | 2# | 800 | 758 | 18 |
| Ф89×3.5 | 1# | 765 | 707 | 18 |
| Ф89×3.5 | 2# | 812 | 772 | 18 |
By the trial-manufacture technology conditional request, the flaring test of making when external diameter is depressed the squeezing test that 1/3D does and expanded external diameter 10% of 60 ° of coneheads, sample is whole qualified in following table, central siphon carries out the water test, under the 11.8Mpa test pressure, voltage stabilizing is no less than 5s, leakage situation do not occur.
Flattening, flaring test result
Ф 120 * 4, Ф 89 * 3.5 transmission shaft tube metallographic structure detected results are in Table 11.
| Grade of steel/specification | Wall thickness centre, heat affected zone width (mm) | Weld seam center welded bonds width (mm) | The metal flow ascending angle (°) | Hold zone of influence pattern | Metal streamline | The fusion area tissue | The heat affected zone tissue | The mother metal tissue |
| 1# Ф120×4 | 2.0 | 0.05-0.12 | 63-78 | Fig. 2 | Fig. 3 | Fig. 4 | Fig. 5 | Fig. 6 |
| 2# Ф120×4 | 1.65 | 0.04-0.10 | 65-80 | Fig. 7 | Fig. 8 | Fig. 9 | Figure 10 | Figure 11 |
| 1# Ф89×3.5 | 2.4 | 0.07-0.19 | 53-64 | Figure 12 | Figure 13 | Figure 14 | Figure 15 | Figure 16 |
| 2# Ф89×3.5 | 2.3 | 0.05-0.12 | 60-70 | Figure 17 | Figure 18 | Figure 19 | Figure 20 | Figure 21 |
In the scope of each about 0.3mm of welded bonds both sides, be incomplete fusion zone, hardness is higher; In the overheated austenitic area of deformation, rear liter first falls in hardness, and reaches maximum (apart from the weld seam central section approximately 1 ~ 2mm); In the austenite recrystallization district, hardness descends gradually, and in the ferrite recrystallization zone, hardness reaches unanimity with matrix gradually.The difference of weld metal zone lowest hardness point and matrix is in 35HV, and the difference of weld metal zone maximum hardness point and matrix is within 60HV.
Transmission shaft tube to three specifications on quiet torsional test machine carries out the quiet strength trial of turning round, result
Annotate: surrender moment of torsion/nominal torque=reserve coefficient
Claims (1)
1. high-strength vehicle transmission shaft tube material, it is characterized in that: the truck drive shaft tube material consists of the following composition by weight percentage:
C 0.20，Si 0.20，Mn 1.00-2.20，P 0-0.025，S 0-0.010，Al 0.015-0.040，Nb0.10,Ti 0.02。
2. the manufacture method of high-strength vehicle transmission shaft tube, it is characterized in that concrete steps are as follows: after the material of composition claimed in claim 1 is carried out to slitting, enter feeder and give uncoiling, carry out leveling after uncoiling, the band material connects butt welding (TIG), and the kink storing enters straight fringe forming, and carries out hight frequency welding, remove outer burr after welding and carry out after air cooling, water-cooled sizing ultrasonic inspection online again, aligning, sawing, tack carry out packing after inspection after construction; Straight fringe forming is to adopt the German RN120L of Mannasman company Forming Unit: comprise pre-profiling and precisive shaped; During pre-profiling, by one of pre-bending frame, with the row-roll forming process machine, complete, precision moulding machine two sorties, extrusion roll is four-roller type, and reducing mill stand is three sorties, and aligning adopts turks-head roll two sorties; Processing parameter is: roll gap 2.8-3.5 mm of fin; Two roll gap 2.6-3.2mm of fin; Row's roller intake condition: high 63-87mm, folding 28-82mm; Row's roller outlet parameter: high 130-182mm, folding 72-100mm; The induction coil front end is apart from extrusion roll distance between center line 132-138mm; Ruhmkorff coil parameter: width 108-128mm, internal diameter 118-153mm; 3 °-5 ° of V-arrangement angular apertures; Extrusion roll outlet size parameter: horizontal 88-125mm, vertical 88-122mm; The technical parameter of hight frequency welding is: adopt Norway EFD400KW High Frequency Solid State device; Rated output: 400KW frequency: 150～250KHZ has load Auto-matching function; Power input (KW) 203-238; Alternating current (A) 100-109; Frequency (KHZ) 174-178; Volts DS (V) 642-652; Output rating (KW) 200-225; Side-play amount % 13-20; Welding speed m/min 20-27; Described weld seam center welded bonds width is controlled in 0.04 ~ 0.19mm scope; The metal streamline ascending angle should be controlled in 45 ° ~ 80 ° scopes, and the heat affected zone width is controlled in 0.36 ~ 0.69 times of scope of wall thickness.
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| CN 200910217836 CN102051523B (en) | 2009-11-11 | 2009-11-11 | High-strength vehicle drive shaft pipe material and shaft pipe manufacturing method |
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| CN102051523B true CN102051523B (en) | 2013-12-25 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103084811A (en) * | 2013-01-16 | 2013-05-08 | 吉林大学 | High strength and light weight vehicle drive shaft assembly manufacturing method |
| CN103934639B (en) * | 2014-04-19 | 2016-07-06 | 长春市矩型焊管有限责任公司 | A kind of thin-walled cold-bending molding technology |
| CN106189074A (en) * | 2016-08-15 | 2016-12-07 | 合肥万向钱潮汽车零部件有限公司 | The central siphon material prescription of truck drive shaft |
| CN106244926A (en) * | 2016-09-28 | 2016-12-21 | 河钢股份有限公司承德分公司 | A kind of containing vanadium steel used for vehicle transmission shaft and production method thereof |
| CN108103409A (en) * | 2018-03-05 | 2018-06-01 | 上海大学 | A kind of titanium microalloying high-strength steel and its preparation method and application |
| CN110181080B (en) * | 2019-05-31 | 2020-04-28 | 南京荣鑫机械制造有限公司 | Manufacturing method of brush roll for alkali scrubbing |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2681938Y (en) * | 2003-08-11 | 2005-03-02 | 上海纳铁福传动轴有限公司 | Automobile transmission shaft assembly |
| CN1759198A (en) * | 2003-03-24 | 2006-04-12 | 新日本制铁株式会社 | High strength hot rolled steel sheet excelling in bore expandability and ductility and process for producing the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1759198A (en) * | 2003-03-24 | 2006-04-12 | 新日本制铁株式会社 | High strength hot rolled steel sheet excelling in bore expandability and ductility and process for producing the same |
| CN2681938Y (en) * | 2003-08-11 | 2005-03-02 | 上海纳铁福传动轴有限公司 | Automobile transmission shaft assembly |
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