CN104625624A - Manufacturing method and device for double-rim walking wheel - Google Patents

Manufacturing method and device for double-rim walking wheel Download PDF

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Publication number
CN104625624A
CN104625624A CN201410788559.5A CN201410788559A CN104625624A CN 104625624 A CN104625624 A CN 104625624A CN 201410788559 A CN201410788559 A CN 201410788559A CN 104625624 A CN104625624 A CN 104625624A
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CN
China
Prior art keywords
wheel
roll
blank
road wheel
rim
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Pending
Application number
CN201410788559.5A
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Chinese (zh)
Inventor
许章泽
谢峰
王健
傅立东
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Magang Group Holding Co Ltd
Maanshan Iron and Steel Co Ltd
Original Assignee
Magang Group Holding Co Ltd
Maanshan Iron and Steel Co Ltd
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Filing date
Publication date
Application filed by Magang Group Holding Co Ltd, Maanshan Iron and Steel Co Ltd filed Critical Magang Group Holding Co Ltd
Priority to CN201410788559.5A priority Critical patent/CN104625624A/en
Publication of CN104625624A publication Critical patent/CN104625624A/en
Pending legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B13/00Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/08Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with differently-directed roll axes, e.g. for the so-called "universal" rolling process
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21HMAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H1/00Making articles shaped as bodies of revolution
    • B21H1/02Making articles shaped as bodies of revolution discs; disc wheels
    • B21H1/04Making articles shaped as bodies of revolution discs; disc wheels with rim, e.g. railways wheels or pulleys
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23PMETAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00Making specific metal objects by operations not covered by a single other subclass or a group in this subclass

Abstract

The invention discloses a manufacturing method for a double-rim walking wheel. The double-rim walking wheel is produced through a press machine and a vertical wheel mill train. The forming process procedures of the double-rim walking wheel include cutting and heating of blanks, performing, forming, milling, punching and flattening. The technical problems that in the prior art, the demolding angle exists, the forging forming force is large, the wheel blank sharp corner mold filling is not full, the mold service life is short, a large amount of machining allowance exists, the mechanical cutting machining allowance is large after mold forging is conducted, and the metal yield is low are effectively solved. The walking wheel blanks which are reasonable in allowance distribution and superior in performance are obtained through relatively less metal batch charging. The wheel blanks are high in material compactness, components and crystal structures of metal are even, the metal fiber flow organization of radial plates, felloes and double rims of the wheel blanks is good, and the mechanical strength of the walking wheel is easily improved. By means of the manufacturing method, production can be accurately organized in a large-batch and high-efficiency mode, molds can be repeatedly used, and the single piece manufacturing cost is greatly reduced.

Description

A kind of manufacture method of two-wheel edge road wheel and manufacturing equipment thereof
Technical field
The invention belongs to major port container road wheel forging and stamping-roll forming process and manufacturing equipment technical field, specifically, relate to a kind of manufacture method and manufacturing equipment thereof of two-wheel edge road wheel.
Background technology
At present, two-wheel edge road wheel is widely used in the fields such as harbour, boats and ships, mine, engineering machinery.Two-wheel edge road wheel has complex-shaped, and bearing load is large, the features such as work under bad environment.
In prior art, traditional double wheel rim road wheel manufacture has die forging, open die forging, casting or welding etc.Die-forging forming is better than other manufacture, is mainly manifested in: forging part dense structure is even, and streamline is continuous, and material internal defect and break down dendritic tissue are easy to forging and close.But there is following many technical problems in the manufacture method of two-wheel edge road wheel of the prior art:
1, adopt two-wheel edge road wheel manufacture method of the prior art, have that draft angle, forging and molding power are large, wheel blank wedge angle fills that type is not full, die life is low.
2, in prior art for the manufacturing equipment of two-wheel edge road wheel can not meet large-scale walk the technical requirement of wheel blank, and adopt existing equipment production two-wheel edge road wheel to there is a large amount of allowance, after die forging, machine cut allowance is large, the problems such as metal lumber recovery is low.
Summary of the invention
The technical solution adopted in the present invention, effectively can solve and adopt two-wheel edge road wheel manufacture method of the prior art, have that draft angle, forging and molding power are large, wheel blank wedge angle fills the technical problems such as type is not full, die life is low, can also solve simultaneously in prior art for the manufacturing equipment of two-wheel edge road wheel can not meet large-scale walk the technical requirement of wheel blank, and adopt existing equipment production two-wheel edge road wheel to there is a large amount of allowance, after die forging, machine cut allowance is large, the problems such as metal lumber recovery is low; And provide a kind of manufacture method and manufacturing equipment thereof of two-wheel edge road wheel.
Technical conceive of the present invention is, have that draft angle, forging and molding power are large to solve in prior art, wheel blank wedge angle fill that type is not full, die life is low, can not meet large-scale walk the technical requirement of wheel blank, there is a large amount of allowance, after die forging, machine cut allowance is large, the technical problems such as metal lumber recovery is low, technical conceive of the present invention is the roll developing a set of roll off two-wheel edge road wheel, forcing press+veritically wheel rolling mill unit is produced two-wheel edge road wheel, feed intake with relatively few metal, obtain allowance balance rationally, the walking wheel blank of superior performance.Wheel blank dense materials degree is high, and evenly, the metallic fiber circulation arrargement of its disc, wheel rim and two-wheel edge is good, is beneficial to the mechanical strength improving road wheel for the composition of metal and texture.
Of the present invention provided technical scheme is, a kind of manufacture method of two-wheel edge road wheel, utilize forcing press and veritically wheel rolling mill unit to produce two-wheel edge road wheel, described two-wheel edge road wheel forming technology flow process comprises the cutting of blank and heating, preformed, shaping, rolling, punching and smooth; Concrete steps are as follows:
The first step, the cutting of blank and heating; Reserve allowance by road wheel finished product, obtain two-wheel edge road wheel wheel blank shape, according to the weight of wheel blank, add the punched hole punching block of wheel bore and the scaling loss of heating, draw required cutting stock weight; Wheel blank is cut, then places it in heating furnace;
Second step, preformed, the metal volume of accurate calculating wheel hub, wheel rim, preformed work step allocates the metal volume of wheel hub, wheel rim in advance, the metal volume of reasonable distribution wheel hub, wheel rim, calculates metal flow radius, namely there is metal flow grouping teaching during die forging, grouping teaching inner metal flows to wheel hub, and outside metal flow is to wheel rim;
3rd step, shaping, the rational preform of shape excellent suitability for press forming on forming press, obtains into parison;
4th step, rolling, by two-wheel edge road wheel wheel blank roll off on 9 roller veritically wheel rolling mills, its effect be to die forging after one-tenth parison carry out expanding shaping, disc is extended, and completes the Accurate Shaping of tread and position, two-wheel edge in the middle part of lateral surface, external diameter in wheel rim internal diameter, wheel rim;
5th step, punching and smooth, is transported to press-bending forcing press by the wheel blank of walking after roll off, carries out punching to the gross weight of wheel bore, then being placed in a set of special mould carries out smooth to wheel rim and disc again, to eliminate away the mild distortion that wheel blank occurs in the operation of rolling.
The burn out rate of described scaling loss calculates by 3.5%; Describedly cutting is carried out to wheel blank adopt special cutting off machine or large-scale circular saw; The described heat time be placed in heating furnace is more than or equal to 5 hours.
Described veritically wheel rolling mill has 9 rolls, be respectively home roll, left disc roller, right disc roller, upper Centering Roll, lower Centering Roll, left edging cross roll, right edging cross roll, left guide roller and right guide roller.
What participate in the distortion of wheel blank roll off in described 9 rolls only has 3, is home roll, left disc roller and right disc roller respectively; All the other 6 rolls do not participate in workpiece deformation, and just playing the stabilization keeping roll off process, is upper Centering Roll, lower Centering Roll, left edging cross roll, right edging cross roll, left guide roller and right guide roller respectively.
After described flattening process, wheel blank will be walked and be transported on chain-type cooling bed and cool, so far complete the rolling and shaping process of two-wheel edge road wheel wheel blank.
A kind of manufacturing equipment of two-wheel edge road wheel, comprise veritically wheel rolling mill, described veritically wheel rolling mill has 9 rolls, is respectively home roll, left disc roller, right disc roller, Centering Roll, lower Centering Roll, left edging cross roll, right edging cross roll, left guide roller and right guide roller.
3 instruments such as described home roll, left disc roller and right disc roller participate in the distortion of wheel blank roll off; 6 instruments such as described upper Centering Roll, lower Centering Roll, left edging cross roll, right edging cross roll, left guide roller and right guide roller play the stabilization keeping roll off process.
Described home roll is made up of boss and limit groove, and described boss is provided with angle [alpha], and described angle [alpha] is 1-3 °, is inclined to into parison lateral surface; Design limit, described home roll both sides groove, described limit groove is wedge.
Described upper Centering Roll, lower Centering Roll are equipped with saddle and holder shoulder; Described saddle height is greater than home roll limit groove depth.
Described left disc roller and right disc roller are equipped with fixed angle and circular arc; Described fixed angle arranges 8-15 °, corresponding with finished product road wheel, and when taking into account roll off, rim face does not produce folding; The corresponding finished product road wheel position of described circular arc size, guarantees that surplus is even.
Adopt technical scheme provided by the present invention, can effectively solve in prior art have that draft angle, forging and molding power are large, wheel blank wedge angle fills that type is not full, die life is low, can not meet large-scale walk the technical requirement of wheel blank, there is a large amount of allowance, after die forging, machine cut allowance is large, the technical problems such as metal lumber recovery is low, technical solution of the present invention also has and feeds intake with relatively few metal, obtain allowance balance rationally, the walking wheel blank of superior performance.Wheel blank dense materials degree is high, and evenly, the metallic fiber circulation arrargement of its disc, wheel rim and two-wheel edge is good, is beneficial to the mechanical strength improving road wheel for the composition of metal and texture.Because outer diameter face two-wheel edge roll off is shaping, its shape is close to finished form, and surperficial unfolded defect, makes machine-finish allowance reduce, and metal feeds intake minimizing.This manufacture energy is in enormous quantities, high efficiency accurately organizes production, and mould can be reused, and single-piece manufacturing cost reduces greatly.
Accompanying drawing explanation
Fig. 1 is the structural representation of two-wheel edge of the present invention walking wheel blank;
Fig. 2 is the structural representation for veritically wheel rolling mill roll off two-wheel edge road wheel wheel blank of the present invention;
Fig. 3 is the structural representation of home roll of the present invention;
Fig. 4 is the structural representation of Centering Roll of the present invention;
Fig. 5 is the structural representation of disc roller of the present invention;
Wherein, 1 is two-wheel edge walking wheel blank; 2 is home roll; 3 is Centering Roll; 4 is disc roller; 5 is boss; 6 is limit groove; 7 is saddle; 8 is holder shoulder; 9 is fixed angle; 10 is circular arc.
Detailed description of the invention
As Figure 1-5, of the present invention provided technical scheme is, a kind of manufacture method of two-wheel edge road wheel, utilize forcing press and veritically wheel rolling mill unit to produce two-wheel edge road wheel, described two-wheel edge road wheel forming technology flow process comprises the cutting of blank and heating, preformed, shaping, rolling, punching and smooth; Concrete steps are as follows: the first step, the cutting of blank and heating; Reserve allowance by road wheel finished product, obtain two-wheel edge road wheel wheel blank shape, according to the weight of wheel blank, add the punched hole punching block of wheel bore and the scaling loss of heating, draw required cutting stock weight; Wheel blank is cut, then places it in heating furnace; Second step, preformed, the metal volume of accurate calculating wheel hub, wheel rim, preformed work step allocates the metal volume of wheel hub, wheel rim in advance, the metal volume of reasonable distribution wheel hub, wheel rim, calculates metal flow radius, namely there is metal flow grouping teaching during die forging, grouping teaching inner metal flows to wheel hub, and outside metal flow is to wheel rim; 3rd step, shaping, the rational preform of shape excellent suitability for press forming on forming press, obtains into parison; 4th step, rolling, by two-wheel edge road wheel wheel blank roll off on 9 roller veritically wheel rolling mills, its effect be to die forging after one-tenth parison carry out expanding shaping, disc is extended, and completes the Accurate Shaping of tread and position, two-wheel edge in the middle part of lateral surface, external diameter in wheel rim internal diameter, wheel rim; 5th step, punching and smooth, is transported to press-bending forcing press by the wheel blank of walking after roll off, carries out punching to the gross weight of wheel bore, then being placed in a set of special mould carries out smooth to wheel rim and disc again, to eliminate away the mild distortion that wheel blank occurs in the operation of rolling.
The burn out rate of described scaling loss calculates by 3.5%; Describedly cutting is carried out to wheel blank adopt special cutting off machine or large-scale circular saw; The described heat time be placed in heating furnace is more than or equal to 5 hours.Described veritically wheel rolling mill has 9 rolls, be respectively home roll 2, left disc roller 4, right disc roller 4, upper Centering Roll 3, lower Centering Roll 3, left edging cross roll, right edging cross roll, left guide roller and right guide roller.What participate in the distortion of wheel blank roll off in described 9 rolls only has 3, is home roll 2, left disc roller 4 and right disc roller 4 respectively; All the other 6 rolls do not participate in workpiece deformation, and just playing the stabilization keeping roll off process, is upper Centering Roll 3, lower Centering Roll 3, left edging cross roll, right edging cross roll, left guide roller and right guide roller respectively.After described flattening process, wheel blank will be walked and be transported on chain-type cooling bed and cool, so far complete the rolling and shaping process of two-wheel edge road wheel wheel blank.
A kind of manufacturing equipment of two-wheel edge road wheel, comprise veritically wheel rolling mill, described veritically wheel rolling mill has 9 rolls, is respectively home roll 2, left disc roller 4, right disc roller 4, Centering Roll 3, lower Centering Roll 3, left edging cross roll, right edging cross roll, left guide roller and right guide roller.3 instruments such as described home roll 2, left disc roller 4 and right disc roller 4 participate in the distortion of wheel blank roll off; 6 instruments such as described upper Centering Roll 3, lower Centering Roll 3, left edging cross roll, right edging cross roll, left guide roller and right guide roller play the stabilization keeping roll off process.Described home roll 2 is made up of boss 5 and limit groove 6, and described boss 5 is provided with angle [alpha], and described angle [alpha] is 1-3 °, is inclined to into parison lateral surface; Design limit, described home roll 2 both sides groove 6, described limit groove 6 is in wedge.Described upper Centering Roll 3, lower Centering Roll 3 are equipped with saddle 7 and holder shoulder 8; Described saddle 7 is highly greater than home roll 2 limit groove 6 degree of depth.Described left disc roller 4 and right disc roller 4 are equipped with fixed angle 9 and circular arc 10; Described fixed angle 9 arranges 8-15 °, corresponding with finished product road wheel, and when taking into account roll off, rim face does not produce folding; The corresponding finished product road wheel position of described circular arc 10 size, guarantees that surplus is even.
The present invention relates to a kind of roll of roll off two-wheel edge road wheel, be applied on veritically wheel rolling mill, can roll off series two-wheel edge road wheel.Mode of the present invention produces wheel blank shape close to the clean shape of finished product, and it is full that wheel blank wedge angle fills type, and surface quality is good, and respectively even to surplus, machine cut allowance greatly reduces, and relative die forging manufacture can save material more than 20%.Two-wheel edge walking wheel blank 1 diameter range produced by the inventive method has Φ 700--Φ 1200mm.
The roll of a set of roll off two-wheel edge road wheel provided by the present invention is applied on forcing press+veritically wheel rolling mill unit, the thermo shaping method producing two-wheel edge walking wheel blank 1 is based upon on the manufacturing process basis of train wheel, and therefore road wheel heat forming technology equipment is exactly the production process equipment using train wheel.
This forming technology flow process comprises the cutting of blank and heating, preformed, shaping, rolling, punching and the step such as smooth.The invention discloses a kind of roll of roll off two-wheel edge road wheel, comprising: home roll 2, two Centering Rolls 3, two disc rollers 4.The roll of a kind of roll off two-wheel edge road wheel provided by the invention is applied on veritically wheel rolling mill, can roll off series two-wheel edge road wheel, change roll shape parameter, the two-wheel edge road wheel of various outer diameter, internal diameter and thickness can be produced, this cover roll structure is reasonable, easy to use.Design a set of roll, vertical mill is set up two-wheel edge walking wheel blank 1 stable rolling state, and acquisition internal-and external diameter wheel rim face sharp corner and two-wheel edge are full of good walking wheel blank.
Concrete operation is as follows:
The cutting of blank and heating
Reserve allowance by road wheel finished product, obtain two-wheel edge road wheel wheel blank shape, the structural representation of two-wheel edge walking wheel blank 1 of the present invention is as Fig. 1.
According to the weight of wheel blank, add the punched hole punching block of wheel bore and the scaling loss (burn out rate is by 3.5%) of heating, draw required cutting stock weight.
Special cutting off machine or large-scale circular saw is adopted to cut the steel ingot of circle or continuous casting billet.
Then place it in heating furnace, the heat time is not less than 5 hours and can comes out of the stove.
Preformed:
Preformed work step plays the effect of metal volume allocating wheel hub, wheel rim in advance, and this point is particularly important when the wheel blank hot forming of major diameter road wheel.Forge and press with static pressure during forcing press die forging, and forcing press completes finish-forging work step with one stroke, thus metal is easy to flow in the horizontal direction, and is not easy to fill lower impressions.
The metal volume of reasonable distribution wheel hub, wheel rim, calculate metal flow radius, namely there is metal flow grouping teaching during die forging, grouping teaching inner metal flows to wheel hub, and outside metal flow is to wheel rim.Due to the restriction of shaping step forcing press ability, when wheel hub is full of in advance excessively, mould is difficult to depress again, often causes disc to thicken, and wheel rim amount of metal is short of, and causes external diameter too small; Otherwise cause wheel hub medial surface charge less full.
Shaping
The rational preform of shape excellent suitability for press forming on forming press, obtains into parison.Wheel hub and the compacting disc of walking wheel blank reach clean shape requirement eventually, and wheel rim metal distributes rationally, walks the formation of wheel blank tread and two-wheel edge when being beneficial to rear step rolling.This work step is under pressure the constraint of capabilities, is the crucial work step of roll off two-wheel edge road wheel wheel blank hot forming unit capabilities match.Appropriate design moulding process, should be conducive to forming press and depress smoothly, reach process set value, is conducive to walking wheel blank stable rolling on vertical mill again and is shaped, obtain intact wheel rim and wheel rim outside dimension.
Rolling
Two-wheel edge road wheel wheel blank roll off on 9 roller veritically wheel rolling mills, its effect be to die forging after one-tenth parison carry out expanding shaping, disc is extended, and completes the Accurate Shaping of tread and position, two-wheel edge in the middle part of lateral surface, external diameter in wheel rim internal diameter, wheel rim.Roll involved in the present invention is applied in this work step.
Veritically wheel rolling mill has 9 rolls.What participate in the distortion of wheel blank roll off only has 3 instruments, and they are home roll 2, left disc roller 4 and right disc roller 4.All the other 6 rolls do not participate in workpiece deformation, and just play the stabilization keeping roll off process, they are upper Centering Roll 3, lower Centering Roll 3, left edging cross roll, right edging cross roll, left guide roller and right guide roller.The present invention relates to home roll 2, left disc roller 4, right disc roller 4, upper Centering Roll 3 and lower Centering Roll 3, all the other home roll 2 shapes produce traditional dies with train wheel.Veritically wheel rolling mill roll off two-wheel edge road wheel wheel blank schematic diagram is as accompanying drawing 2.
The stressed complexity of workpiece in deformation process, during stable rolling distortion, left and right disc roller 4 position is fixed, and all the other each rollers do relative motion along with workpiece roll off is expanding.Roll off process workpiece rotates tens circles, is equivalent to multi-pass rolling.Rolled blank shape is derived, design home roll 2, left disc roller 4, right disc roller 4, upper Centering Roll 3 and lower Centering Roll 3 according to walking the clean shape of wheel blank.Have symmetry owing to walking wheel blank drop center portion position, therefore left disc roller 4 is identical with right disc roller 4, upper Centering Roll 3 is identical with lower Centering Roll 3.
Described home roll 2 is made up of boss 5 and limit groove 6.Boss 5 is provided with angle [alpha], size 1-3 °, is inclined to into parison lateral surface, is beneficial to metal flow to this side flange place.Design limit, home roll 2 both sides groove 6, limit groove 6, in wedge, is the direct position that two-wheel edge produces, arranges circular arc 10 and gradient, and when ensureing that wheel rim is shaped, metal is full of smoothness, does not produce the defects such as folding and misrun.Fig. 3 is the structural representation of home roll 2 of the present invention.
Described two Centering Rolls 3 are designed with saddle 7 and holder shoulder 8.Saddle 7 is highly greater than home roll 2 limit groove 6 degree of depth, during rolling and shaping, guarantees saddle 7 and walks wheel blank tread and contact, and ask shoulder 8 not contact wheel rim top.Fig. 4 is the structural representation of Centering Roll 3 of the present invention.
Described two disc rollers 4 are in fixed angle 9 and circular arc 10.Fixed angle 9 arranges 8-15 °, corresponding with finished product road wheel, and when taking into account roll off, rim face does not produce folding.The corresponding finished product road wheel position of circular arc 10 size, guarantees that surplus is even.Fig. 5 is the structural representation of disc roller 4 of the present invention.
The high roll application advantage determining a set of roll off two-wheel edge road wheel that the present invention relates to of lumber recovery index, such Realization of Product that the present invention develops breakthrough of the two flange tread of veritically wheel rolling mill rolling.
Punching and smooth
Wheel blank of walking after roll off is transported to press-bending forcing press, punching is carried out to the gross weight of wheel bore, be then placed on again in a set of special mould and carry out smooth to wheel rim and disc, to eliminate away the mild distortion that wheel blank occurs in the operation of rolling.Wheel blank will be walked be transported on chain-type cooling bed and cool, so far complete the rolling and shaping process of two-wheel edge road wheel wheel blank.
The implementation result of technical scheme provided by the present invention:
Compared with traditional road wheel manufacturing process, the present invention uses a kind of roll of roll off two-wheel edge road wheel, roll off walking wheel blank on forcing press+veritically wheel rolling mill unit.Technological operation reliability is high, and be applicable to batch production, die life is long, single-piece low cost of manufacture.Two-wheel edge walking wheel blank 1 metal structure even compact, workpiece section metallic streamline is intact, and mechanical strength improves relatively.Through the two-wheel edge that roll off is shaping, surperficial unfolded defect, machine-finish allowance is relatively little, and metal feeds intake and reduces about 20%.The raising of comprehensive technical indexes, makes this manufacture of walking wheel blank commercially have very strong competitive advantage.Two-wheel edge walking wheel blank 1 diameter range produced by the inventive method has Φ 700--Φ 1200mm.
Walk wheel blank for certain production Zhenhua port machine product ZH900Z and calculate benefit.Rolling 650, qualified 646, qualification rate 99.4%, not containing tax price 5680 yuan/part, fixed cost 939 yuan/part, variable cost 1776 yuan/part.Bring benefits as 646* (5680-936-1776)=191.7 (ten thousand yuan).
For Zhenhua port machine ZH900Z road wheel blank, embodiment of the present invention is described.This product material 42CrMo, tread external diameter 900mm, two-wheel edge external diameter 950mm, flange thickness 42mm, wheel rim height 238mm.First, stay to walking wheel blank according to accompanying drawing 1 and put surplus, consider to rush block weight and heating furnace scaling loss (scaling loss coefficient 3.5%) calculating charged material weight.
Calculate the metal volume that metal flow radius distributes wheel hub and wheel rim, design double polarizing keys 5 impression mould, completes forcing press preformed and shaping step.Roll off two-wheel edge walking wheel blank 1 on veritically wheel rolling mill, design home roll 2 is as accompanying drawing 3, and design Centering Roll 3 is as accompanying drawing 4, and design disc roller 4 is as accompanying drawing 5.Produce product 650, blank external diameter surplus is moderate, and two-wheel edge is full of better, surperficial unfolded defect, through inspection delivery 646, becomes final finished travelling wheel, qualified 642 by client's heat treatment process.

Claims (10)

1. the manufacture method of a two-wheel edge road wheel, it is characterized in that, utilize forcing press and veritically wheel rolling mill unit to produce two-wheel edge road wheel, described two-wheel edge road wheel forming technology flow process comprises the cutting of blank and heating, preformed, shaping, rolling, punching and smooth; Concrete steps are as follows:
The first step, the cutting of blank and heating; Reserve allowance by road wheel finished product, obtain two-wheel edge road wheel wheel blank shape, according to the weight of wheel blank, add the punched hole punching block of wheel bore and the scaling loss of heating, draw required cutting stock weight; Wheel blank is cut, then places it in heating furnace;
Second step, preformed, the metal volume of accurate calculating wheel hub, wheel rim, preformed work step allocates the metal volume of wheel hub, wheel rim in advance, the metal volume of reasonable distribution wheel hub, wheel rim, calculates metal flow radius, namely there is metal flow grouping teaching during die forging, grouping teaching inner metal flows to wheel hub, and outside metal flow is to wheel rim;
3rd step, shaping, the rational preform of shape excellent suitability for press forming on forming press, obtains into parison;
4th step, rolling, by two-wheel edge road wheel wheel blank roll off on 9 roller veritically wheel rolling mills, its effect be to die forging after one-tenth parison carry out expanding shaping, disc is extended, and completes the Accurate Shaping of tread and position, two-wheel edge in the middle part of lateral surface, external diameter in wheel rim internal diameter, wheel rim;
5th step, punching and smooth, is transported to press-bending forcing press by the wheel blank of walking after roll off, carries out punching to the gross weight of wheel bore, then being placed in a set of special mould carries out smooth to wheel rim and disc again, to eliminate away the mild distortion that wheel blank occurs in the operation of rolling.
2. the manufacture method of a kind of two-wheel edge road wheel according to claim 1, is characterized in that, the burn out rate of described scaling loss calculates by 3.5%; Describedly cutting is carried out to wheel blank adopt special cutting off machine or large-scale circular saw; The described heat time be placed in heating furnace is more than or equal to 5 hours.
3. the manufacture method of a kind of two-wheel edge road wheel according to claim 1 and 2, it is characterized in that, described veritically wheel rolling mill has 9 rolls, be respectively home roll (2), left disc roller (4), right disc roller (4), upper Centering Roll (3), lower Centering Roll (3), left edging cross roll, right edging cross roll, left guide roller and right guide roller.
4. the manufacture method of a kind of two-wheel edge road wheel according to claim 3, it is characterized in that, what participate in the distortion of wheel blank roll off in described 9 rolls only has 3, be respectively home roll (2, left disc roller (4) and right disc roller (4); All the other 6 rolls do not participate in workpiece deformation, and just playing the stabilization keeping roll off process, is upper Centering Roll (3), lower Centering Roll (3), left edging cross roll, right edging cross roll, left guide roller and right guide roller respectively.
5. the manufacture method of a kind of two-wheel edge road wheel according to claim 4, is characterized in that, after described flattening process, will walk wheel blank and be transported on chain-type cooling bed and cool, and so far complete the rolling and shaping process of two-wheel edge road wheel wheel blank.
6. the manufacturing equipment of a two-wheel edge road wheel, comprise veritically wheel rolling mill, it is characterized in that, described veritically wheel rolling mill has 9 rolls, is respectively home roll (2), left disc roller (4), right disc roller (4), Centering Roll (3), lower Centering Roll (3), left edging cross roll, right edging cross roll, left guide roller and right guide roller.
7. the manufacturing equipment of a kind of two-wheel edge road wheel according to claim 6, is characterized in that, 3 instruments such as described home roll (2), left disc roller (4) and right disc roller (4) participate in the distortion of wheel blank roll off; 6 instruments such as described upper Centering Roll (3), lower Centering Roll (3), left edging cross roll, right edging cross roll, left guide roller and right guide roller play the stabilization keeping roll off process.
8. the manufacturing equipment of a kind of two-wheel edge road wheel according to claim 7, it is characterized in that, described home roll (2) is made up of boss (5) and limit groove (6), described boss (5) is provided with angle [alpha], described angle [alpha] is 1-3 °, is inclined to into parison lateral surface; (2 design limits, both sides groove (6), described limit groove (6) is in wedge for described home roll.
9. the manufacturing equipment of a kind of two-wheel edge road wheel according to claim 8, is characterized in that, described upper Centering Roll (3), lower Centering Roll (3) are equipped with saddle (7) and holder shoulder (8); Described saddle (7) is highly greater than home roll (2) limit groove (6) degree of depth.
10. the manufacturing equipment of a kind of two-wheel edge road wheel according to claim 9, is characterized in that, described left disc roller (4) and right disc roller (4) are equipped with fixed angle (9) and circular arc (10); Described fixed angle (9) arranges 8-15 °, corresponding with finished product road wheel, and when taking into account roll off, rim face does not produce folding; The corresponding finished product road wheel position of described circular arc (10) size, guarantees that surplus is even.
CN201410788559.5A 2014-12-17 2014-12-17 Manufacturing method and device for double-rim walking wheel Pending CN104625624A (en)

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CN105945527A (en) * 2016-06-20 2016-09-21 安徽省瑞杰锻造有限责任公司 Processing technology of track travelling wheel
CN106270315A (en) * 2016-10-21 2017-01-04 马鞍山钢铁股份有限公司 Three method for rolling and shaping of train wheel
CN108787968A (en) * 2018-05-21 2018-11-13 马鞍山钢铁股份有限公司 Anti- disc rim plate is away from big difference train wheel heat forming technology
CN110479926A (en) * 2019-08-02 2019-11-22 武汉理工大学 The split type space envelope Forming Equipments of complex large-scale component

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Publication number Priority date Publication date Assignee Title
CN105945527A (en) * 2016-06-20 2016-09-21 安徽省瑞杰锻造有限责任公司 Processing technology of track travelling wheel
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CN108787968A (en) * 2018-05-21 2018-11-13 马鞍山钢铁股份有限公司 Anti- disc rim plate is away from big difference train wheel heat forming technology
CN108787968B (en) * 2018-05-21 2019-11-12 马鞍山钢铁股份有限公司 Anti- disc rim plate is away from big difference train wheel heat forming technology
CN110479926A (en) * 2019-08-02 2019-11-22 武汉理工大学 The split type space envelope Forming Equipments of complex large-scale component
CN110479926B (en) * 2019-08-02 2020-08-04 武汉理工大学 Split type space envelope forming equipment for large-scale complex component

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Application publication date: 20150520