CN104325838A - High-speed rail wheel and hot-extrusion integrated forming method thereof - Google Patents
High-speed rail wheel and hot-extrusion integrated forming method thereof Download PDFInfo
- Publication number
- CN104325838A CN104325838A CN201410562310.2A CN201410562310A CN104325838A CN 104325838 A CN104325838 A CN 104325838A CN 201410562310 A CN201410562310 A CN 201410562310A CN 104325838 A CN104325838 A CN 104325838A
- Authority
- CN
- China
- Prior art keywords
- wheel
- steel
- high ferro
- blank
- extrusion
- Prior art date
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 52
- 238000001192 hot extrusion Methods 0.000 title claims abstract description 22
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 29
- 239000010959 steel Substances 0.000 claims abstract description 29
- 239000002184 metal Substances 0.000 claims abstract description 26
- 229910052751 metal Inorganic materials 0.000 claims abstract description 26
- 229910000851 Alloy steel Inorganic materials 0.000 claims abstract description 19
- 229910000954 Medium-carbon steel Inorganic materials 0.000 claims abstract description 18
- 238000005242 forging Methods 0.000 claims abstract description 18
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- 238000007493 shaping process Methods 0.000 claims description 21
- 239000002131 composite material Substances 0.000 claims description 14
- 238000012937 correction Methods 0.000 claims description 13
- 229910052804 chromium Inorganic materials 0.000 claims description 12
- 229910052748 manganese Inorganic materials 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 11
- 229910052710 silicon Inorganic materials 0.000 claims description 11
- 238000001125 extrusion Methods 0.000 claims description 10
- 229910052719 titanium Inorganic materials 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 229910052750 molybdenum Inorganic materials 0.000 claims description 8
- 229910052759 nickel Inorganic materials 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims description 8
- 229910052720 vanadium Inorganic materials 0.000 claims description 8
- 238000004080 punching Methods 0.000 claims description 6
- 238000012360 testing method Methods 0.000 claims description 6
- 238000005452 bending Methods 0.000 claims description 5
- 210000001161 mammalian embryo Anatomy 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 238000005299 abrasion Methods 0.000 abstract description 5
- 238000003754 machining Methods 0.000 abstract description 4
- 238000007689 inspection Methods 0.000 abstract description 2
- 230000007774 longterm Effects 0.000 abstract description 2
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 230000008569 process Effects 0.000 description 23
- 238000005516 engineering process Methods 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 9
- 229910052799 carbon Inorganic materials 0.000 description 6
- 238000012545 processing Methods 0.000 description 6
- 238000005096 rolling process Methods 0.000 description 6
- 229910001566 austenite Inorganic materials 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 229910001567 cementite Inorganic materials 0.000 description 4
- KSOKAHYVTMZFBJ-UHFFFAOYSA-N iron;methane Chemical compound C.[Fe].[Fe].[Fe] KSOKAHYVTMZFBJ-UHFFFAOYSA-N 0.000 description 4
- 229910000975 Carbon steel Inorganic materials 0.000 description 3
- 238000005275 alloying Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000010962 carbon steel Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- DOSMHBDKKKMIEF-UHFFFAOYSA-N 2-[3-(diethylamino)-6-diethylazaniumylidenexanthen-9-yl]-5-[3-[3-[4-(1-methylindol-3-yl)-2,5-dioxopyrrol-3-yl]indol-1-yl]propylsulfamoyl]benzenesulfonate Chemical compound C1=CC(=[N+](CC)CC)C=C2OC3=CC(N(CC)CC)=CC=C3C(C=3C(=CC(=CC=3)S(=O)(=O)NCCCN3C4=CC=CC=C4C(C=4C(NC(=O)C=4C=4C5=CC=CC=C5N(C)C=4)=O)=C3)S([O-])(=O)=O)=C21 DOSMHBDKKKMIEF-UHFFFAOYSA-N 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000002929 anti-fatigue Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910000734 martensite Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 230000001141 propulsive effect Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000003325 tomography Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Landscapes
- Forging (AREA)
Abstract
The invention discloses a high-speed rail wheel and a hot-extrusion integrated forming method thereof. The high-speed rail wheel is made of bi-component metal steel, and is composed of a wheel flange part, a wheel rim part, a wheel tread part, a wheel hub part and a wheel spoke part, wherein the wheel flange part, the wheel rim part and the wheel tread part are made of low alloy steel; the wheel hub part and the wheel spoke part are made of medium carbon steel. According to the high-speed rail wheel, not only are the toughness and plasticity of the medium carbon steel part essentially invariable, but also the strength and hardness of the low alloy steel area are obviously improved, and the abrasion resistance and contact fatigue resistance are increased. In the machining process, hot-extrusion integrated forging forming is performed on double metal steel by three hydraulic machines; the technological steps of preparing, heating, blank preforming by a first hydraulic machine, blank forming by a second hydraulic machine, forming modification by a third hydraulic machine, finished product inspection and warehousing are performed, so that the high-efficient, fast and reliable hot-extrusion machining process is realized, the finished product rate is high, and the performance is stable and reliable; the high-speed rail wheel is especially widely applied to high-speed rails for a long term.
Description
Technical field
The present invention relates to the hot extrusion integral forming method of high ferro wheel and the high ferro wheel that a kind of high speed railway uses, belong to railway equipment field.
Background technology
The manufacture of countries in the world train wheel, except a small amount of employing cast steel, is use steel ingot base, through the rolled steel wheel of machinework formation after forging and stamping, rolling mostly.At present, China's high ferro wheel all relies on import, the rolled steel wheel that domestic wheel manufacturer relies on import second-hand equipment to produce, and because technical matters falls behind, is not used in the high ferro of China.
Along with China's high ferro construction enters peak load conditions, high ferro wheel forming process improves becomes inevitable.Wherein, the technological process of China's newly-built high ferro wheel fabrication line is mainly: steel billet first completes forging and stamping process through work steps such as jumping-up, impression and die forging preforming on three hydraulic presses, on milling train, rolling is expanding again, last punching on a hydraulic press, press-bending, correction, form finished product high ferro wheel, as shown in Figure 1.And the wheel forming technology flow process adopted when countries such as the day before yesterday, moral, English, U.S.s is: the blank that steel ingot is made first forges into forging through blocking and die forging two work steps on same hydraulic press, after rolling is expanding, punching on another hydraulic press, press-bending, complete high ferro wheel and make.Two kinds of wheel forming technology flow processs latter half of substantially identical, unlike forebody swaged sections, the former completes respectively through four work steps by steel billet on three hydraulic presses, the latter's steel billet completes on same hydraulic press through two work steps, the former capacity rating is higher, but need increase by two hydraulic presses and strengthen the tonnage of hydraulic die press, equipment investment and floor area large; The latter forges and presses work step and hydraulic press number of units is few, and capacity rating is low, can not give full play to the usefulness of subsequent handling equipment.Though cut both ways, but all there is a critical defect in two kinds of techniques, namely in the expanding process of rolling, the metal streamline prolonging longitudinal development there will be tomography at expanding place, and there is the metal streamline by the expansion of rolling hand of rotation in expanding shaping area, expansion area metal structure is developed to open texture by compact tissue, and this metal streamline becomes the maximum potential safety hazard of finished product.
The defect how avoiding above-mentioned rolled steel wheel inside to exist, improves the overall performance of high ferro wheel, just becomes the subject matter that the present invention wants to solve.
Summary of the invention
In view of the deficiency that above-mentioned existing high ferro wheel performance exists, and overcome the inevitable defective workmanship that rolled steel wheel exists in forging process, the present invention aims to provide a kind of high ferro wheel by the production of composite metal hot extrusion integral shaping method and job operation thereof, to meet the specially-shaped needs of high ferro wheel, ensure the overall in-use performance of high ferro wheel.
High-speed wheel is as the important spare part of high speed train, and play a part to support the weight of whole train and propulsive effort and braking force are passed to rail, its service property (quality) direct relation the safe in operation of train and the safety of passenger's lives and properties.Below, in conjunction with both macro and micro both direction, in use and stressed wear-process, situation analysis explanation is carried out to high ferro wheel:
In wheel metal surface, due to the effect of running surface of wheeltrack contact stress during high ferro wheel runs, cause wheel tread coating metal plastic deformation and cause germinating and the development of endurance crack, making wheel tread be easy to produce contact fatigue damage.Along with high ferro speed exceedes 300 kilometers per hour, the possibility that the lower hardness of wheel comes in contact Fatigue peelback is larger, and wheel wear speed significantly increases.For ensureing the safety of high ferro wheel, wheel tread is necessarily required to have good comprehensive mechanical performance, namely higher intensity and hardness, and good wheel contacting fatigue resistance and resistance to abrasion.At present, high ferro wheel is the rolled steel wheel based on carbon steel, obtain good intensity and hardness, not only can not improve the mechanical characteristics of wheel, also can sacrifice the toughness plasticity of steel, wheel Combination property is declined by increasing carbon content.Rational way is: adopt low alloy material at positions such as wheel rim, wheel rim and treads, wheel hub, spoke adopt medium-carbon steel, bulk strength and the hardness of wheel is increased under the prerequisite ensureing wheel toughness, obtain good wheel contacting fatigue resistance and resistance to abrasion, and under the cooperation of corresponding molten forging process, complete the processing of clad steel high ferro wheel, the perfect finished wheel of the performance needed for formation, the inevitable defective workmanship avoiding rolled steel wheel to be formed in Forging Technology.
In the metallic material of inside wheel, research finds, is only difficult to by adjustment carbon content the Combination property optimizing wheel steel material, cannot meets the requirement of high speed train wheel steel.Determining to reduce carbon content, improve double carbide, pearlitic matrix under the principle of critical temperature during austenite phase transformation, also need to adopt suitable alloying means.Wherein, when adopting the high ferro wheel of compatible composite metal composition, low-alloy steel can be adopted at wheel rim, wheel rim and tread, adopt medium-carbon steel at wheel hub and spoke place.In low-alloy steel region, Cr, Mn, Si element is solid-solution in austenite completely, improves the quenching degree of steel; Ti element in austenite grain boundary, prevents growing up of austenite crystal with carbonization TiC form pinning; Alloy substrate (Cr, Mn, Fe) and carbide metal TiC cooperatively act on matrix, make steel produce higher intensity, hardness and wear resistance, meanwhile, also maintain good toughness.Be dissolved with the alloying elements such as Cr, Mn, Si in cementite, make alloyed cementite more stable mutually.In austenitization, the rate of dissolution of cementite reduces.In high speed train operational process, because brake produces friction heat, cause wheel surface steep temperature rise, even reach austenite transition temperature, but this process relative brevity, if cementite is mutually more stable in wheel steel original structure, original structure will be delayed to a certain extent to austenic conversion rates, be reduced in formed in rapid cooling process subsequently martensitic may.
Therefore drawn by above-mentioned analysis: be the overall performance improving high ferro wheel, ensure the high-wearing feature of wheel rim and tread and hardness and intensity, a kind of high ferro wheel of the present invention is realized by following technical scheme:
A kind of high ferro wheel, is made up of two composition metallic steel, comprises: the wheel rim be made up of low-alloy steel, wheel rim and tread portions, and the wheel hub be made up of medium-carbon steel and spoke part.Chemical composition (%) in low-alloy steel except Fe is: C:0.17%-0.23%, Si:0.27%-0.35%, Mn:0.80%-0.90%, Cr:0.26%-0.30%, Ti:0.06%-0.10%, S≤0.01%, P≤0.01%, Als≤0.021%, V≤0.05%, Mo≤0.08%, Ni≤0.30%, Cu≤0.20%.Chemical composition (%) in medium-carbon steel except Fe is: C:0.46%-0.52%, Si:0.27%-0.35%, Mn:0.60%-0.90%, Cr:0.19%-0.30%, Ti≤0.01%, S≤0.01%, P≤0.01%, Als≤0.021%, V≤0.05%, Mo≤0.08%, Ni≤0.30%, Cu≤0.20%.Wherein, in finished product high ferro wheel, tread is 35mm to the thickness of wheel rim.
In addition, in the job operation of high ferro wheel, for China and English, day, the existing train wheel Forging Technology of De Deng state sunykatuib analysis and compare, in conjunction with current manufacturing lines operation conditions, draw: current technology forging and stamping work step is many, production efficiency is low, and be difficult to control due to steel billet size, end face is uneven, easily goes out bias, have to strengthen amount of machining, loss is serious; Meanwhile, because depth of indentation is wayward, the pattern draft direction of jumping-up ring and die forging die cavity is contrary, and die forging process there will be and is not fully filled and scraps phenomenon.
The hot extrusion integral forming method of high ferro wheel of the present invention has carried out system test to various base preform work step and has compared, result proves, short by ton hydraulic compressor global formation production technology processing high ferro wheel flow process, three work steps complete wheel forging, yield rate is high, capacity rating can reach 120 per hour, and have huge technological advance and remarkable technique effect to existing home and abroad processing technology, its concrete grammar comprises:
Step one, blanking
Select the composite metal bar of ￠ 400mm specification, deviation of weight ± 2kg, the gradient≤2mm blanking of saw material forms stock, and the center of composite metal bar is medium-carbon steel, and circumferencial direction is coated with the low-alloy steel that thickness is 30mm.In low-alloy steel, chemical composition is: C:0.17%-0.23%, Si:0.27%-0.35%, Mn:0.80%-0.90%, Cr:0.26%-0.30%, Ti:0.06%-0.10%, S≤0.01%, P≤0.01%, Als≤0.021%, V≤0.05%, Mo≤0.08%, Ni≤0.30%, Cu≤0.20%.In medium-carbon steel, chemical composition is: C:0.46%-0.52%, Si:0.27%-0.35%, Mn:0.60%-0.90%, Cr:0.19%-0.30%, Ti≤0.01%, S≤0.01%, P≤0.01%, Als≤0.021%, V≤0.05%, Mo≤0.08%, Ni≤0.30%, Cu≤0.20%.
Rough turn correction lathe carrying out stock also can be included in, to ensure the accuracy of blank size and shape after described blanking.
Step 2, heating
Stock enter stove heating, heating-up temperature at 1150 ± 30 DEG C, feeding of then coming out of the stove next procedure.
Step 3, the first hydraulic compressor blank preforming
Select pressure to be that the hydraulic compressor of 120000KN carries out the preforming of forging hot extrusion, determine journey level pressure, extrusion speed is 40-100mm/s; opening speed is 100-160mm/s; after jumping-up → extruding preforming, in patrix backhaul, pre-formed workpieces ejects, and sends into next procedure.
Step 4, the second hydraulic compressor blank are shaping
Pressure is selected to be that the hydraulic compressor of 80000KN carries out hot extrusion molding embryo; adopt and determine journey pressurization methods, extrusion speed is 40-100mm/s, and opening speed is 100-160mm/s; after hot extrusion blank is shaping, in patrix backhaul, shaping blank is sent into next procedure by automatic ejection.
Step 5, the shaping correction of the 3rd hydraulic compressor
Select 5000T level hydraulic compressor to carry out shaping correction, pressure setting is 30000KN, and extrusion speed is 40-100mm/s, and opening speed is 100-160mm/s, determines journey level pressure, after punching, press-bending, correction, completes finished wheel automatic ejection in patrix backhaul.
Step 6, test to finished wheel, product warehousing after passing, composite metal high ferro wheel machines.
A kind of high ferro wheel of the present invention and hot extrusion integral forming method thereof, by adopting low-alloy steel at the wheel rim of high-speed wheel, wheel rim and tread place, common medium-carbon steel is adopted at wheel hub and spoke place, not only remaining medium-carbon steel part toughness plasticity can be substantially constant, also significantly improve intensity and the hardness in low-alloy steel region, add resistance to abrasion and anti-contact fatigue, composite metal high ferro wheel overall performance is obviously improved, meets the use needs of high speed railway.In addition, three ton hydraulic compressors are adopted to carry out the solid forging of clad steel hot extrusion shaping, blank jumping-up is abundant, preform process is stablized, reliably, shaping simple with makeover process, convenient, avoid the defect that in technique in the past, expanding process makes metal streamline not plan a successor, simultaneously, blank preforming and forming process complete respectively on two hydraulic compressors, punching is completed again through the 3rd hydraulic compressor, bend and correct, the manufacturing line that three hydraulic compressors are formed can give full play to effect of individual device, technological process is short, yield rate is high, production efficiency significantly improves, per hourly produce 120 finished wheels, greatly reduce cost, save production time, reduce energy resource consumption, finished product high ferro wheel is not only met and uses needs, also improve the competitive power of product, be particularly suitable on high speed railway long-term, widely use.
Accompanying drawing explanation
Fig. 1 is the processing technology figure of existing high ferro wheel;
Fig. 2 is the structural representation of a kind of high ferro wheel of the present invention;
Fig. 3 is the flow scheme of high ferro wheel heat extrusion integral forming method of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail:
As shown in Figure 2, a kind of high ferro wheel of the present invention, is made up of two composition metallic steel, comprises the wheel rim 1, wheel rim 3 and tread 2 part that are made up of low-alloy steel, and the wheel hub 5 be made up of medium-carbon steel and spoke 4 part.The overall dimensions of high ferro wheel need meet concerned countries standard, and meanwhile, in wheel, tread 2 is 35mm to the thickness of wheel rim 3.Wherein, for maintaining the overall performance of low-alloy steel district wheel rim 1, wheel rim 3 and tread 2, the chemical composition in low-alloy steel comprises: Fe:97.989%, C:0.21%, Si:0.32%, Mn:0.81%, Cr:0.30%, Ti:0.08%, S:0.004%, P:0.005%, Als:0.011%, V:0.001%, Mo:0.02%, Ni:0.1%, Cu:0.15%.In medium-carbon steel district wheel hub 5 and spoke 4, chemical composition comprises: Fe:97.654%, C:0.50%, Si:0.32%, Mn:0.85%, Cr:0.21%, Ti:0.004%, S:0.005%, P:0.002%, Als:0.015%, V:0.025%, Mo:0.035%, Ni:0.20%, Cu:0.18%.
A kind of hot extrusion integral forming method of above-mentioned high ferro wheel, except normal procurement of materials in early stage, checking and accepting, comprising: blanking → heating → the first hydraulic compressor blank preforming → the second hydraulic compressor blank is shaping → the shaping correction → product inspection → warehouse-in of the 3rd hydraulic compressor.As shown in Figure 3, concrete steps comprise:
Step 1, blanking select the composite metal bar of ￠ 400mm specification, deviation of weight ± 2kg, and the gradient≤2mm blanking of saw material forms stock, and the center of composite metal bar is medium-carbon steel, and circumferencial direction is coated with the low-alloy steel that thickness is 30mm.
Before the blanking of every root composite metal bar, the dimensions of bar must be determined, calculate the blank size of wheel blanks.By technological requirement, select the sawing machine of blanking specification > ￠ 400mm to carry out blanking, wheel blank by part heavily.
For ensureing blank size, the stock after blanking can also go up that lathe is rough turn rectifies a deviation.
Step 2, heat and lower good stock is put into stove heat, heating and temperature control at 1150 DEG C, feeding of then coming out of the stove next procedure.
Step 3, the first hydraulic compressor blank preforming select pressure to be that the hydraulic compressor of 120000KN carries out the preforming of forging hot extrusion; determine journey level pressure; extrusion speed is 40-100mm/s; opening speed is 100-160mm/s; after jumping-up → extruding preforming; in patrix backhaul, pre-formed workpieces ejects, and sends into next procedure.
By impact and the requirements for quality of following process process, ton hydraulic compressor must be first used to carry out abundant jumping-up, to form complete, failure-free preforming blank in jumping-up, extruding preform process.
Step 4, the second hydraulic compressor blank be shaping selects pressure to be that the hydraulic compressor of 80000KN carries out hot extrusion molding embryo; according to discharging frequency; adopt and determine journey pressurization methods; extrusion speed controls at 60mm/s; opening speed controls at 130mm/s; after hot extrusion, blank is shaping, and in patrix backhaul, shaping blank is sent into next procedure by after automatic ejection.
This step is for closing key control operation, and this procedure decides the determination of steel billet blanking quality, machining allowance, material behavior, and the impact that deformation velocity, temperature, friction condition, blank shape, size and mould structure etc. produce forming process.Wherein, adopt the force energy consumption of the plasticity finite element method computational plasticity course of processing, calculate the distribution of material of distortion work step, distribution of stress and metal flow, for optimizing process and designing mould die cavity provide foundation.By tentative calculation repeatedly, constantly revise adjustment blank and die size according to the information of metal deformation flow, optimizing technology parameters and mould structure, finally draw the best processing route that high ferro wheel is shaped.
Step 5, the shaping correction of the 3rd hydraulic compressor select 5000T level hydraulic compressor to carry out shaping correction, and pressure setting is 30000KN, and extrusion speed is 80mm/s; opening speed is 140mm/s; determine journey level pressure, after punching, press-bending, correction, in patrix backhaul, complete finished wheel automatic ejection.
Step 6, test to finished wheel, product warehousing after passing, composite metal high ferro wheel machines.
The test of tensile property, hardness and impact property conventional mechanical property is carried out to the wheel rim of above-mentioned finished product composite metal high ferro wheel, reach a conclusion for: compared with taking turns with carbon steel (intensity that carbon steel is taken turns and hardness are respectively 827MPa and HB237), be significantly improved containing the intensity of alloy steel wheel steel material and hardness, increment is respectively 163MPa and HB44, has especially had after have employed alloy steel apart from the rim hardness of tread 35mm and has significantly improved.Concrete test figures is:
Therefore, the alloying elements such as Cr, Mn, Si, Ti add in right amount in wheel steel, can contribute to the peeling resistance, the resistance to abrasion that improve wheel steel tread to a certain extent, and improve superficial hardness and intensity.Wheel hub, spoke adopt medium-carbon steel, and the contact resistance fatigue property of the resistance to sliding friction property of material, resistance to friction of rolling performance and material reduces, but the heat-resistant anti-fatigue performance of material significantly rises.Facts have proved, wheel hub, spoke adopt medium-carbon steel, and the content of carbon is about 0.5% can obtain good Combination property.
Claims (6)
1. a high ferro wheel, is characterized in that, is made up of, specifically comprises: the wheel rim be made up of low-alloy steel, wheel rim and tread portions two composition metallic steel, and the wheel hub be made up of medium-carbon steel and spoke part.
2. high ferro wheel according to claim 1, it is characterized in that, the chemical composition in described low-alloy steel is: C:0.17%-0.23%, Si:0.27%-0.35%, Mn:0.80%-0.90%, Cr:0.26%-0.30%, Ti:0.06%-0.10%, S≤0.01%, P≤0.01%, Als≤0.021%, V≤0.05%, Mo≤0.08%, Ni≤0.30%, Cu≤0.20%.
3. high ferro wheel according to claim 1, is characterized in that, described tread is 35mm to the thickness of wheel rim.
4. high ferro wheel according to claim 1, it is characterized in that, the chemical composition in described medium-carbon steel is: C:0.46%-0.52%, Si:0.27%-0.35%, Mn:0.60%-0.90%, Cr:0.19%-0.30%, Ti≤0.01%, S≤0.01%, P≤0.01%, Als≤0.021%, V≤0.05%, Mo≤0.08%, Ni≤0.30%, Cu≤0.20%.
5. the hot extrusion integral forming method of arbitrary described high ferro wheel in claim 1-4, it is characterized in that, concrete steps comprise:
Step one, blanking
Select the composite metal bar of ￠ 400mm specification, deviation of weight ± 2kg, the gradient≤2mm blanking of saw material forms stock, and the center of composite metal bar is medium-carbon steel, and circumferencial direction is coated with the low-alloy steel that thickness is 30mm;
Step 2, heating
Stock enter stove heating, heating-up temperature at 1150 ± 30 DEG C, feeding of then coming out of the stove next procedure;
Step 3, the first hydraulic compressor blank preforming
Select pressure to be that the hydraulic compressor of 120000KN carries out the preforming of forging hot extrusion, determine journey level pressure, extrusion speed is 40-100mm/s, opening speed is 100-160mm/s, after jumping-up → extruding preforming, in patrix backhaul, pre-formed workpieces ejects, and sends into next procedure;
Step 4, the second hydraulic compressor blank are shaping
Pressure is selected to be that the hydraulic compressor of 80000KN carries out hot extrusion molding embryo, adopt and determine journey pressurization methods, extrusion speed is 40-100mm/s, and opening speed is 100-160mm/s, after hot extrusion blank is shaping, in patrix backhaul, shaping blank is sent into next procedure by automatic ejection;
Step 5, the shaping correction of the 3rd hydraulic compressor
Select 5000T level hydraulic compressor to carry out shaping correction, pressure setting is 30000KN, and extrusion speed is 40-100mm/s, and opening speed is 100-160mm/s, determines journey level pressure, after punching, press-bending, correction, completes finished wheel automatic ejection in patrix backhaul;
Step 6, test to finished wheel, product warehousing after passing, composite metal high ferro wheel machines.
6. hot extrusion integral forming method according to claim 5, is characterized in that, also can be included in rough turn correction lathe carrying out stock after described step one blanking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410562310.2A CN104325838B (en) | 2014-10-22 | 2014-10-22 | A kind of high ferro wheel and hot extrusion integral forming method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410562310.2A CN104325838B (en) | 2014-10-22 | 2014-10-22 | A kind of high ferro wheel and hot extrusion integral forming method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104325838A true CN104325838A (en) | 2015-02-04 |
| CN104325838B CN104325838B (en) | 2016-08-24 |
Family
ID=52400700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410562310.2A Active CN104325838B (en) | 2014-10-22 | 2014-10-22 | A kind of high ferro wheel and hot extrusion integral forming method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104325838B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104816578A (en) * | 2015-04-15 | 2015-08-05 | 常州天骏机电制造有限公司 | Hot-rolled wheel and manufacturing method |
| CN105252961A (en) * | 2015-10-30 | 2016-01-20 | 马鞍山市天钧机械制造有限公司 | A kind of wheel for rubber tire track and its processing method |
| CN108421951A (en) * | 2018-03-23 | 2018-08-21 | 韶关市中机重工股份有限公司 | EMU driving device wheel hub forging mold and its production technology |
| CN108526238A (en) * | 2018-03-16 | 2018-09-14 | 北京航星机器制造有限公司 | A kind of asymmetric band lug aluminium alloy flange disk hot extrusion near-net-shape method |
| CN108973512A (en) * | 2018-07-03 | 2018-12-11 | 马鞍山市天钧机械制造有限公司 | A kind of integral type operating condition solid wheel and its preparation process |
| CN111098096A (en) * | 2019-12-31 | 2020-05-05 | 太原重工轨道交通设备有限公司 | Wheel machining method |
| CN114227182A (en) * | 2021-11-25 | 2022-03-25 | 太原重工轨道交通设备有限公司 | Hot-working manufacturing method for train wheel |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2022257750B2 (en) * | 2021-04-16 | 2025-04-17 | Nippon Steel Corporation | Railway wheel |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1417330A (en) * | 1972-03-02 | 1975-12-10 | Italsider Spa | Method for manufacturing steel monobloc wheels |
| US5899516A (en) * | 1996-01-23 | 1999-05-04 | Sumitomo Metal Industries, Ltd. | Railway wheel and manufacturing method of the railway wheel |
| DE69815758T2 (en) * | 1997-05-23 | 2004-04-29 | Valdunes | Method of manufacturing a railway wheel and railway wheel thus manufactured |
| CN101784728A (en) * | 2007-08-17 | 2010-07-21 | 卡特彼勒公司 | Two-piece compactor wheel tip |
| EP1538231B1 (en) * | 2003-12-03 | 2010-08-25 | Lucchini RS S.p.A. | A microalloy bainitic steel with high resistance to fatigue and to fretting fatigue |
| CN102506236A (en) * | 2011-10-21 | 2012-06-20 | 唐勇 | Bimetallic mechanical compound wear-resistant steel pipe and manufacturing method thereof |
| CN104018082A (en) * | 2014-06-05 | 2014-09-03 | 马钢(集团)控股有限公司 | Medium-carbon low-alloy wheel steel for metro and manufacturing method of wheel steel |
-
2014
- 2014-10-22 CN CN201410562310.2A patent/CN104325838B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1417330A (en) * | 1972-03-02 | 1975-12-10 | Italsider Spa | Method for manufacturing steel monobloc wheels |
| US5899516A (en) * | 1996-01-23 | 1999-05-04 | Sumitomo Metal Industries, Ltd. | Railway wheel and manufacturing method of the railway wheel |
| DE69815758T2 (en) * | 1997-05-23 | 2004-04-29 | Valdunes | Method of manufacturing a railway wheel and railway wheel thus manufactured |
| EP1538231B1 (en) * | 2003-12-03 | 2010-08-25 | Lucchini RS S.p.A. | A microalloy bainitic steel with high resistance to fatigue and to fretting fatigue |
| CN101784728A (en) * | 2007-08-17 | 2010-07-21 | 卡特彼勒公司 | Two-piece compactor wheel tip |
| CN102506236A (en) * | 2011-10-21 | 2012-06-20 | 唐勇 | Bimetallic mechanical compound wear-resistant steel pipe and manufacturing method thereof |
| CN104018082A (en) * | 2014-06-05 | 2014-09-03 | 马钢(集团)控股有限公司 | Medium-carbon low-alloy wheel steel for metro and manufacturing method of wheel steel |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104816578A (en) * | 2015-04-15 | 2015-08-05 | 常州天骏机电制造有限公司 | Hot-rolled wheel and manufacturing method |
| CN105252961A (en) * | 2015-10-30 | 2016-01-20 | 马鞍山市天钧机械制造有限公司 | A kind of wheel for rubber tire track and its processing method |
| CN105252961B (en) * | 2015-10-30 | 2017-10-13 | 马鞍山市天钧机械制造有限公司 | A kind of processing method of wheel for rubber tire track |
| CN107757245A (en) * | 2015-10-30 | 2018-03-06 | 马鞍山市天钧机械制造有限公司 | A kind of method for turning of rubber tire rail wheel |
| CN107757245B (en) * | 2015-10-30 | 2019-07-19 | 马鞍山市天钧机械制造有限公司 | A kind of method for fine finishing of rubber tire rail wheel |
| CN108526238A (en) * | 2018-03-16 | 2018-09-14 | 北京航星机器制造有限公司 | A kind of asymmetric band lug aluminium alloy flange disk hot extrusion near-net-shape method |
| CN108421951A (en) * | 2018-03-23 | 2018-08-21 | 韶关市中机重工股份有限公司 | EMU driving device wheel hub forging mold and its production technology |
| CN108973512A (en) * | 2018-07-03 | 2018-12-11 | 马鞍山市天钧机械制造有限公司 | A kind of integral type operating condition solid wheel and its preparation process |
| CN111098096A (en) * | 2019-12-31 | 2020-05-05 | 太原重工轨道交通设备有限公司 | Wheel machining method |
| CN111098096B (en) * | 2019-12-31 | 2021-07-09 | 太原重工轨道交通设备有限公司 | Wheel machining method |
| CN114227182A (en) * | 2021-11-25 | 2022-03-25 | 太原重工轨道交通设备有限公司 | Hot-working manufacturing method for train wheel |
| CN114227182B (en) * | 2021-11-25 | 2023-11-07 | 太原重工轨道交通设备有限公司 | Train wheel hot processing manufacturing method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104325838B (en) | 2016-08-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104325838B (en) | A kind of high ferro wheel and hot extrusion integral forming method thereof | |
| CN107073570B (en) | Composite casting special-shaped roll and preparation method thereof | |
| CN103659199B (en) | Method for achieving forging rolling thermal forming of wheel with deep-basin type spoke plate structure | |
| CN100423858C (en) | Cast high chromium iron or cast high chromium steel rolls for welded steel pipes | |
| CN101797685B (en) | Process for manufacturing high-strength bolt | |
| CN100484696C (en) | Forging and rolling technology and hot rolling and forging apparatus for making large pulley | |
| CA2707502C (en) | An axle from a seamless tube for railroad vehicles, and a process for manufacturing an axle from a seamless steel tube for railroad vehicles | |
| CN100506422C (en) | Forging and Rolling Forming Method of Wind Power Tower Flange | |
| CN102179681B (en) | Pipe mold manufacturing process adopting continuous-casting blank to forge and roll rough blank periodically | |
| CN103014534B (en) | Cast hot work die steel and processing method thereof | |
| CN102615478A (en) | Forging process of wind power main shaft | |
| CN102000825A (en) | Method for manufacturing driving gear of motorcycle clutch | |
| CN102560228B (en) | Method for producing wheel made of austempered ductile iron (ADI) material | |
| CN104874626B (en) | A kind of radial direction reverse Compound Extrusion shaping magnesium alloy heavy burden wheel disc technique and device | |
| CN104525889A (en) | High-speed steel roller manufacturing method | |
| CN101367103B (en) | Magnesium alloy sheet material flow forming and molding process | |
| CN105149892A (en) | Precise forming method for steel-forged wheel-mounted disc brake of rail train | |
| CN104015012A (en) | Manufacturing method of Al-Mg-Si alloy hub | |
| CN101623922B (en) | Manufacturing technology of integral inner and outer inverted V-shaped or inner inverted V-shaped iron-based alloy inner bushing | |
| CN114196855A (en) | Anti-fatigue high-bearing-capacity aluminum alloy hub and forging process thereof | |
| CN103100625B (en) | Precision forging process for twisting connector part of automotive chassis suspension system | |
| CN102001442B (en) | Casting formed blade guide frame and casting forming method thereof | |
| CN111589874B (en) | Combined roller manufactured in environment-friendly mode and manufacturing method thereof | |
| CN104325259A (en) | Manufacturing method of seamless steel pipe piercing plug | |
| CN102001441A (en) | Cast and formed blade guiding frame and casting forming method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200511 Address after: No.112, building 5, yard 89, Huanghe East Road, Jinshui District, Zhengzhou City, Henan Province 450018 Patentee after: Lei Zhongkun Address before: 450016 No. ninth, 167 Avenue, Zhengzhou economic and Technological Development Zone, Zhengzhou, Henan Patentee before: Lei Bangrong |
|
| TR01 | Transfer of patent right |