CN107225150B - A kind of processing method of variable cross-section track connecting plate - Google Patents
A kind of processing method of variable cross-section track connecting plate Download PDFInfo
- Publication number
- CN107225150B CN107225150B CN201710602361.7A CN201710602361A CN107225150B CN 107225150 B CN107225150 B CN 107225150B CN 201710602361 A CN201710602361 A CN 201710602361A CN 107225150 B CN107225150 B CN 107225150B
- Authority
- CN
- China
- Prior art keywords
- rolling
- mold
- connecting plate
- variable cross
- finish
- 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.)
- Active
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
- B21B13/02—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
- B21H7/00—Making articles not provided for in the preceding groups, e.g. agricultural tools, dinner forks, knives, spoons
- B21H7/002—Fasteners, rivets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/02—Dies or mountings therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K7/00—Making railway appurtenances; Making vehicle parts
- B21K7/02—Making railway appurtenances; Making vehicle parts parts for permanent way
- B21K7/10—Making railway appurtenances; Making vehicle parts parts for permanent way rails joints
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
- B21B13/02—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged horizontally
- B21B2013/021—Twin mills
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Agronomy & Crop Science (AREA)
- Forging (AREA)
Abstract
The invention discloses a kind of processing method of variable cross-section track connecting plate and rolling and finishing mold, the rolling and finishing mold include intermittent rolling mold and finish-forging finishing mold, the processing method include selection；Heating；First rolling, is made irregular section rolled blank；Secondary rolling is made variable cross-section track connecting plate and rolls prefabricated blank；Finish-forging finishing.This processing method can be to avoid the defect of the manufacturing process of current casting and second displacement forging；Rolling deformation is continuous hydrostatic profile process, and metal fibrous tissue is evenly distributed, and fibr tissue is not switched off, while not impacting and vibrating in this process, ensure that the stability of the mechanical property of product.It is had a very important significance in railway casting production field.
Description
Technical field
The present invention relates to railway casting manufacturing process areas, connect more particularly to a kind of variable cross-section track in railway joint
The processing method of plate.
Background technique
Track connecting plate, also referred to as fish platee or road clamping plate are the securing members for track and interorbital.Variable cross-section
Track connecting plate is as the important component in railway rail system, and used in the rail joint position of rail type not of the same race, specification is not
One, but basic structure is close, the only difference in outer dimension.Because its present position is more special, to the peace of train operation
The very big influence of Quan Xingyou, therefore, quality requirement is just particularly important, and should have good mechanical property, such as anti-impact
Hit, is anti-shearing, is wear-resisting etc..
The conventional fabrication method of variable cross-section track connecting plate is mainly: casting and forging and stamping.1, for casting, in casting
Dense structure, portion degree is poor relative to rolling and forging, and often will appear sand holes, stomata, misrun, deformation the defects of ask
Topic, yield rate is not high, in addition, casting is also easy to produce more gaseous contamination, water pollution etc..2, it for forging, processes at present
Method is: using standard fish platee as rolling blank, then carrying out displacement forging to part, Lai Shixian compromising joint bar adds
Work.This processing method there are the problem of: to common fish tail board ends carry out different process processing, one end be rolling, one end
For forging and stamping；This meeting so that product two ends mechanical performance, tissue disunity, there are security risks；And secondary forging, it increases
The process heated again causes the waste of resource, the energy and manpower.
Therefore, from the point of view of existing variable cross-section track connecting plate manufacturing technology, it is badly in need of a kind of advanced manufacturing work
Skill, the production efficiency of Lai Tigao variable cross-section track connecting plate reduce production cost, while it is stable comprehensive to have product
Close performance.This will bring good economic benefit in railway casting production.
Summary of the invention
In order to solve the problems, such as that present production process production Chen Bengao, properties of product are unstable, the present invention provides a kind of change
The rolling mold and finishing mold and processing method, specific technical solution of section track connecting plate are as follows.
A kind of rolling of variable cross-section track connecting plate and finishing mold, including intermittent rolling mold and finish-forging die finish
Tool, the intermittence rolling mold includes upper die and lower die, and upper die and lower die are respectively cylinder, is rotated simultaneously, in contact surface
Mutually matched male and fomale(M&F) is respectively set, plate is put between upper die and lower die and is rolled, forms defined shape；
First passage rolling mold type chamber cross sectional shape is irregular quadrilateral, and it is diagonal that upper die and lower die die joint is located at two
Position；Second passage rolling mold type chamber cross sectional shape is variable cross-section track connecting plate section, and upper die and lower die die joint, which is located at, to be become
Section track connecting plate section horizontal direction maximum displacement position.
The finish-forging finishing mold includes upper mold portion and lower mold portion, wherein the upper mold portion include cope plate, formed punch, on
Wedge and fastening bolt, formed punch are anchored on upper mold centre；The lower mold portion includes lower template, locating piece, hyposphene, finish-forging liftout
Bar and fastening bolt；Concave surface, upper mold portion is arranged in setting protrusion among the upper mold portion and lower mold portion, upper mold portion and lower mold portion both ends
There are cavitys among when closing up with lower mold portion, to the variable cross-section road for being put into cavity between finish-forging finishing mold upper mold portion and lower mold portion
Rail connecting plate rolls prefabricated blank and carries out finish-forging finishing, and formed punch runs through upper mold portion and lower mold portion.
Wherein, the cope plate in the finish-forging finishing mold and lower template use common hot die steel, are selected from
The upper die and lower die of one of 5CrNiMo, 5CrMnMo or 4Cr5MoSiV, intermittent rolling mold use obdurability mold
Steel, selected from one of H13,4Cr3Mo2V, 4Cr5W2VSi or ER8.
Preferably, the first passage rolling mold of the intermittent rolling mold and the second passage rolling mold are respectively along circle
Cylinder is sequentially arranged the type chamber of two same cross-sectionals, and two pieces variable cross-section track connecting plate can be made simultaneously in primary rolling,
Compare the preparation efficiency of " one go out one ", and this programme can realize " one goes out two ", improve production efficiency.
It is furthermore preferred that the intermittence rolling mold the first passage rolling mold of horizontally-parallel setting and the on the cylinder
An irregular quadrilateral connection can be made in the type chamber of two two, passes mold different cross sections simultaneously in primary rolling
Plate and a variable cross-section track connecting plate.
It is furthermore preferred that the intermittence rolling mold is sequentially arranged first passes of two same cross-sectionals along cylindrical body
Mold cavity, then the two second passage rolling mold type chambers parallel with the first passage rolling mold type chamber are set.Once rolling
Two pieces irregular section rolled blank and two pieces variable cross-section track connecting plate rolling prefabricated blank can be made in system simultaneously.This programme can
It realizes " one goes out two ", further improves production efficiency.
Further, when two pieces variable cross-section track connecting plate rolling prefabricated blank being made in primary rolling, two variable cross-sections
Track connecting plate rolls prefabricated blank big end and is connected；
Alternatively, when two pieces variable cross-section track connecting plate is made in primary rolling, two variable cross-section track connecting plate small end phases
Even；
Alternatively, when two pieces variable cross-section track connecting plate is made in primary rolling, the two big small ends of variable cross-section track connecting plate
It is connected.
Preferably, according to the specification of variable cross-section track connecting plate, can roll quantity every time is 1-2 part.
Preferably, two finish-forging dies are sequentially connected in series, and once can carry out forging and stamping finishing to two pieces blank simultaneously.This
Scheme can realize " one goes out two ", further improve production efficiency.
The present invention also provides a kind of novel processing methods of variable cross-section track connecting plate, using intermittence rolling and finishing
Combined machining method, include the following steps:
1. taking round steel, the bar of suitable length is sawn into sawing machine；
It is heated 2. bar in step 1 is put into heating furnace, 950-1200 DEG C of heating temperature, heating time 2-
5min；
3. the first passage rolling mold is uniformly first preheated to 220-320 DEG C, by step 2 be heated to 950-1200 DEG C it is malleable
The bar of temperature is put into the roll mill of roller diameter 500-1200mm and is rolled for the first time, and irregular section rolled blank is made；
4. the second passage rolling mold is uniformly first preheated to 220-320 DEG C, irregular section made from step 3 is rolled
Base is put into the roll mill of roller diameter 500-1200mm and carries out secondary rolling, and it is prefabricated that the rolling of variable cross-section track connecting plate is made
Base；
5. the variable cross-section track connecting plate in step 4 is rolled pre- by finish-forging finishing mold preheating temperature to 220-320 DEG C
Base, which is put into 800-8000t press machine, carries out finish-forging finishing, including punching, middle position displacement finish-forging and trimming three parts,
Punching carries out simultaneously with finish-forging, then carries out trimming, the variable cross-section track connecting plate after being processed.
The present invention is not related to subsequent heat treatment process.
This processing method can be to avoid the defect of the manufacturing process of current casting and second displacement forging；In step 3 and step
During rapid 4 roll forming, rolling deformation is continuous hydrostatic profile process, and metal fibrous tissue is evenly distributed, fibr tissue
It is not switched off, while not impacting and vibrating in this process, ensure that the stability of the mechanical property of product.In step 5 finish-forging
In finishing, the opposite sliding between prefabricated blank and mold is smaller, and residual deformation and additional stress are relatively small, ensure that different
The stability of shape fish tail board size；It is had a very important significance in railway casting production field.
Detailed description of the invention
The Figure of description for constituting a part of the invention is used to provide further understanding of the present invention, and of the invention shows
Examples and descriptions thereof are used to explain the present invention for meaning property, does not constitute improper limitations of the present invention.
Fig. 1 is variable cross-section track connecting plate rolling mold structural section schematic diagram described in the embodiment of the present invention 1；
Fig. 2 is a kind of sectional view of intermittent rolling mold the first passage rolling mold of the embodiment of the present invention 1；
Fig. 3 is a kind of A-1 expanded view of intermittent rolling mold the first passage rolling mold of the embodiment of the present invention 1；
Fig. 4 is a kind of sectional view of intermittent rolling mold the second passage rolling mold of the embodiment of the present invention 1；
Fig. 5 is a kind of B-1 expanded view of intermittent rolling mold the second passage rolling mold of the embodiment of the present invention 1；
Fig. 6 is a kind of expanded view of intermittent rolling mold the first passage rolling mold of the embodiment of the present invention 2；
Fig. 7 is a kind of expanded view of intermittent rolling mold the second passage rolling mold of the embodiment of the present invention 2；
Fig. 8 is a kind of sectional view of the intermittent rolling mold of the embodiment of the present invention 3；
Fig. 9 is a kind of expanded view of the intermittent rolling mold of the embodiment of the present invention 3；
Figure 10 is a kind of expanded view of the intermittent rolling mold of the embodiment of the present invention 4；
Figure 11 is variable cross-section track connecting plate finish-forging finishing mold side view described in the embodiment of the present invention 1；
Figure 12 is variable cross-section track connecting plate finish-forging finishing mold top view described in the embodiment of the present invention 1；
Figure 13 is the finish-forging knockout pin arrangement of variable cross-section track connecting plate finish-forging finishing mold described in the embodiment of the present invention 1
Figure；
Figure 14 is variable cross-section track connecting plate finish-forging finishing mold punch structure figure described in the embodiment of the present invention 1；
Figure 15 is variable cross-section track connecting plate finish-forging finishing mold top view described in the embodiment of the present invention 5；
Figure 16 is the forming process schematic diagram of variable cross-section track connecting plate processing method provided by the invention；
Figure 17 is forging and stamping metal streamline type schematic diagram；
Figure 18 is the streamlined schematic diagram of intermittent rolled metal.
In figure, 1-1 is intermittent rolling mold upper mold, and 1-2 is intermittent rolling mold lower die；2-1 is lower template, 2-2
For hyposphene, 2-3 is lower mold portion, and 2-4 is upper mold portion, and 2-5 is upper wedge, and 2-6 is fastening bolt, and 2-7 is cope plate, and 2-8 is finish-forging
Ejector beam, 2-9 are locating piece, and 2-10 is formed punch.
Specific embodiment
It is noted that described further below be all exemplary, it is intended to provide further instruction to the present invention.Unless another
It indicates, all technical and scientific terms used herein has usual with general technical staff of the technical field of the invention
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to exemplary embodiments of the present invention.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
Intermittent rolling as described in the examples includes rolling in advance and finish to gauge, respectively can be with when rolling process only has two steps
It is stated as the first passes and the second passes.
As background technique is introduced, the deficiency that production efficiency is low, properties of product not can guarantee exists in the prior art,
In order to solve technical problem as above, the invention proposes the molds and processing method of a kind of variable cross-section track connecting plate.
Embodiment 1:
As shown in Figure 1, the present invention provides rolling and the finishing mold of a kind of variable cross-section track connecting plate, including intermittence is rolled
Molding jig and finish-forging finishing mold, specific technical solution are as follows:
As shown in Figure 1, intermittent rolling mold includes upper mold 1-1 and lower die 1-2, upper die and lower die are respectively cylinder,
Rotate simultaneously, be respectively set mutually matched male and fomale(M&F) in contact surface, there is type chamber between male and fomale(M&F), by plate be put into upper mold and
The intracavitary rolling of type between lower die forms defined shape；As shown in FIG. 1 to 3, the first passage rolling mold type chamber cross sectional shape
For irregular quadrilateral, upper and lower mould die joint is located at two diagonal positions；As shown in Figure 4 and Figure 5, the second passage rolling mold type chamber
Cross sectional shape is variable cross-section track connecting plate section, and upper and lower mould die joint is located at variable cross-section track connecting plate section horizontal direction most
Big displacement position.
As shown in Figure 11~Figure 14, finish-forging die includes upper mold portion 2-4 and lower mold portion 2-3, wherein the upper mold portion 2-4
The centre upper mold portion 2-4 is anchored on including cope plate 2-7, formed punch 2-10, upper wedge 2-5 and fastening bolt 2-6, formed punch 2-10；
The lower mold portion 2-3 includes lower template 2-1, locating piece 2-9, hyposphene 2-2, finish-forging ejector beam 2-8 and fastening bolt 2-6；It is described
Setting protrusion among upper mold portion 2-4 and lower mold portion 2-3, upper mold portion 2-4 and the both ends lower mold portion 2-3 are arranged concave surface, upper mold portion 2-4 with
There are cavity among when lower mold portion 2-3 male and fomale(M&F) closes up, to being put into cavity between finish-forging finishing mold upper mold portion and lower mold portion
Blank carries out forging and stamping finishing, and formed punch 2-10 runs through upper mold portion 2-4 and lower mold portion 2-3.
Wherein, the intermittent rolling mold and cope plate in finish-forging finishing mold and lower template use 5CrNiMo material
The common hot die steel of matter, upper die and lower die use obdurability mould steel, select H13.
Embodiment 2:
As shown in Figure 6 and Figure 7, in a preferred embodiment, the first passage rolling die of the intermittent rolling mold
Tool and the second passage rolling mold are sequentially arranged the type chamber of two same cross-sectionals along cylindrical body respectively, can be same in primary rolling
When two pieces variable cross-section track connecting plate is made, compare the preparation efficiency of " one go out one ", and this programme can realize " one goes out two ", improve
Production efficiency.
Embodiment 3:
As shown in Figure 8 and Figure 9, in a preferred embodiment, the intermittent rolling mold is laterally put down on the cylinder
The type chamber of row setting two different cross sections of the first passage rolling mold and the second passage rolling mold, can be same in primary rolling
When an irregular quadrilateral connecting plate and a variable cross-section track connecting plate is made.
Embodiment 4:
As shown in Figure 10, the intermittent rolling mold is rolled along the first passage that cylindrical body is sequentially arranged two same cross-sectionals
Molding jig type chamber, then the two second passage rolling mold type chambers parallel with the first passage rolling mold chamber are set.Once rolling
Two pieces irregular quadrilateral connecting plate and two pieces variable cross-section track connecting plate can be made in system simultaneously.This programme can realize " one
Out two ", further improve production efficiency.
Further, when two pieces variable cross-section track connecting plate is made in primary rolling, two variable cross-section track connecting plates
Big end is connected；The advantages of " big end is connected " is: preceding narrow middle wide design is easy to bar during the rolling process, avoids material extrusion existing
As.
Alternatively, when two pieces variable cross-section track connecting plate is made in primary rolling, two variable cross-section track connecting plate small end phases
Even；
Alternatively, when two pieces variable cross-section track connecting plate is made in primary rolling, the two big small ends of variable cross-section track connecting plate
It is connected.
Preferably, according to the specification of variable cross-section track connecting plate, can roll quantity every time is 1-2 part.
Embodiment 5:
As shown in figure 15, two finish-forging dies are sequentially connected in series, and once can carry out forging and stamping essence to two pieces blank simultaneously
Whole, this programme can realize " one goes out two ", further improve production efficiency.
The equipment used in embodiment 6~8 includes the model of Weifang company, Ke Hua electric furnace Manufacturing Co., Ltd production
The medium-frequency induction furnace of KGPS-1250；ZGD-500, ZGD-800 and ZGD- of middle machine forging and stamping Jiangsu limited liability company production
1200 roll mills；The 800t press machine of the YSK-800 of Chongqing east of a river Co., Ltd production, JIER Machine-Tool Group Co., Ltd. are raw
The J35-8000t press machine of 3500 tons of press machines of the TE4-3500 of production and Qingdao Hongda Forging Machinery Co., Ltd's production.
Embodiment 6:
In a kind of typical embodiment of the invention, novel the present invention provides a kind of variable cross-section track connecting plate adds
Work method, the combined machining method using intermittent rolling and finishing include the following steps: as shown in figure 16
1. taking 55#, 70 round steel of φ is sawn into the bar of long 1000mm with sawing machine；
It is heated 2. bar in step 1 is put into heating furnace, heating time 5min；
3. the first passage rolling mold is uniformly first preheated to 320 DEG C, the bar that step 2 is heated to malleable temperature is put into
It is rolled for the first time in the ZGD-500 roll mill of roller diameter 500mm, irregular section rolled blank is made；
4. the second passage rolling mold is uniformly first preheated to 320 DEG C, by irregular section rolled blank made from step 3
It is put into the roll mill of roller diameter 500mm and carries out secondary rolling, variable cross-section track connecting plate is made and rolls prefabricated blank；
5. the rolled blank in step 4 to 320 DEG C, is put into the YSK-800 pressure of 800t by finish-forging finishing mold preheating temperature
Finish-forging finishing is carried out in machine, including punching, middle position displacement finish-forging and trimming three parts, punching carry out simultaneously with finish-forging, and
After carry out trimming, the variable cross-section track connecting plate after being processed.
The present invention is not related to subsequent heat treatment process.
Embodiment 7:
In another embodiment of the invention, the step 2 is that bar in step 1 is put into heating furnace to be added
Heat, heating time 2min；Step 3 is that the first passage rolling mold is uniformly first preheated to 220 DEG C, step 2 is heated to malleable
The bar of temperature is put into the ZGD-1200 roll mill of roller diameter 1200mm and is rolled for the first time, and irregular section rolling is made
Base；Second passage rolling mold is first uniformly preheated to 220 DEG C by step 4., by irregular section rolled blank made from step 3
It is put into the roll mill of roller diameter 1200mm and carries out secondary rolling, variable cross-section track connecting plate is made and rolls prefabricated blank；Step
5. finish-forging die preheating temperature to 220 DEG C, the rolled blank in step 4 is put into the YSK-8000 press machine of 8000t and is carried out eventually
Finishing is forged, including punching, middle position displacement finish-forging and trimming three parts, punching carry out simultaneously with finish-forging, then carry out trimming,
Variable cross-section track connecting plate after being processed.
Embodiment 8:
In another embodiment of the invention, the step 2 is that bar in step 1 is put into heating furnace to be added
Heat, 1000 DEG C of heating temperature, heating time 3min；Step 3 is that the first passage rolling mold is uniformly first preheated to 320 DEG C, will
The bar that step 2 is heated to 1000 DEG C of malleable temperature is put into the ZGD-800 roll mill of roller diameter 800mm to be rolled for the first time
Irregular section rolled blank is made in system；Second passage rolling mold is first uniformly preheated to 320 DEG C by step 4., and step 3 is made
The irregular section rolled blank obtained, which is put into the roll mill of roller diameter 800mm, carries out secondary rolling, and variable cross-section track is made and connects
Fishplate bar rolls prefabricated blank；Step 5. finish-forging finishing mold preheating temperature is put into 3500t's to 320 DEG C, by the rolled blank in step 4
Finish-forging finishing, including punching, middle position displacement finish-forging and trimming three parts, punching and finish-forging are carried out in TE4-3500 press machine
It carries out simultaneously, then carries out trimming, the variable cross-section track connecting plate after being processed.
In another embodiment of the invention, cope plate and lower template in above-mentioned finish-forging finishing mold use 5CrMnMo
The upper die and lower die of the common hot die steel of material, intermittent rolling mold use obdurability mould steel, select 4Cr3Mo2V.
In another embodiment of the invention, cope plate and lower template in above-mentioned finish-forging finishing mold are used
The common hot die steel of 4Cr5MoSiV material, the upper die and lower die of intermittent rolling mold are using in 4Cr5W2VSi or ER8
A kind of obdurability mould steel.It is not limited to above-mentioned material, those skilled in the art can select properly according to the actual situation
Steel material.
This processing method can be to avoid the defect of the manufacturing process of current casting and second displacement forging；In step 3 and step
During rapid 4 roll forming, rolling deformation is continuous hydrostatic profile process, and metal fibrous tissue is evenly distributed, fibr tissue
It is not switched off, while not impacting and vibrating in this process, therefore, there is good gold by this processing method processing products obtained therefrom
Belong to streamlined (being the metal streamline of forging see Figure 17, Figure 18 is rolled metal streamline), ensure that the mechanical property of product
Stability.Since most of deformation is completed in step 3 and step 4 operation of rolling, in step 5 finish-forging finishing, in advance
Opposite sliding between base and mold is smaller, and residual deformation and additional stress are relatively small, ensure that compromising joint bar size
Stability；It is had a very important significance in railway casting production field.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (4)
1. a kind of processing method of variable cross-section track connecting plate rolls the combined machining method with finish-forging finishing using intermittence,
It is characterized in that, intermittent rolling is using intermittent rolling mold, the intermittence rolling mold includes the first passage rolling die
Tool and the second passage rolling mold, finish-forging finishing use finish-forging finishing mold, and the processing method includes the following steps:
Step 1. takes round steel, and the bar of suitable length is sawn into sawing machine；
Bar in step 1 is put into heating furnace and heats by step 2., and 950-1200 DEG C of heating temperature, heating time 2-
5min；
First passage rolling mold is first uniformly preheated to 220-320 DEG C by step 3., by step 2 be heated to 950-1200 DEG C it is malleable
The bar of temperature is put into the roll mill of roller diameter 500-1200mm and rolls for the first time, and irregular section rolled blank is made；
Second passage rolling mold is first uniformly preheated to 220-320 DEG C by step 4., and irregular section made from step 3 is rolled
Base is put into the roll mill of roller diameter 500-1200mm and carries out secondary rolling, and it is prefabricated that the rolling of variable cross-section track connecting plate is made
Base；
Step 5. rolls the variable cross-section track connecting plate in step 4 first by finish-forging finishing mold preheating temperature to 220-320 DEG C
Prefabricated blank, which is put into 800-8000t press machine, carries out finish-forging finishing, including punching, middle position displacement finish-forging and trimming three
Point, punching carries out simultaneously with finish-forging, then carries out trimming, the variable cross-section track connecting plate after being processed；
The intermittence rolling mold includes upper die and lower die, and upper die and lower die are respectively cylinder, is rotated simultaneously, in contact surface
Mutually matched male and fomale(M&F) is respectively set, bar or irregular section rolled blank are put between upper die and lower die and rolled, is formed
Defined shape；First passage rolling mold type chamber cross sectional shape is irregular quadrilateral, and upper die and lower die die joint is located at two pairs
Angle Position；Second passage rolling mold type chamber cross sectional shape is variable cross-section track connecting plate section, and upper die and lower die die joint is located at
Variable cross-section track connecting plate section horizontal direction maximum displacement position；
The finish-forging finishing mold includes upper mold portion and lower mold portion, wherein the upper mold portion include cope plate, formed punch, upper wedge and
Fastening bolt, formed punch are anchored on upper mold portion centre；The lower mold portion includes lower template, locating piece, hyposphene, finish-forging ejector beam
And fastening bolt；Setting protrusion among the upper mold portion and lower mold portion, upper mold portion and lower mold portion both ends are arranged concave surface, upper mold portion with
There are cavitys among when lower mold portion is closed up, to the variable cross-section track for being put into cavity between finish-forging finishing mold upper mold portion and lower mold portion
Connecting plate rolls prefabricated blank and carries out finish-forging finishing, and formed punch runs through upper mold portion and lower mold portion；
The intermittence rolling mold is sequentially arranged the first passage rolling mold type chamber of two same cross-sectionals along cylindrical body, then sets
The two second passage rolling mold type chambers parallel with the first passage rolling mold type chamber are set, can be made simultaneously in primary rolling
It obtains two pieces irregular section rolled blank and two pieces variable cross-section track connecting plate rolls prefabricated blank；Two pieces is made in primary rolling to become
When section track connecting plate rolls prefabricated blank, two variable cross-section track connecting plates roll prefabricated blank big end and are connected.
2. a kind of processing method of variable cross-section track connecting plate according to claim 1, which is characterized in that the finish-forging essence
Cope plate and lower template in reshaping die are used selected from one of 5CrNiMo, 5CrMnMo or 4Cr5MoSiV common Forming Die
Has steel；It is described intermittence rolling mold upper die and lower die use obdurability mould steel, selected from H13,4Cr3Mo2V,
One of 4Cr5W2VSi or ER8.
3. a kind of processing method of variable cross-section track connecting plate according to claim 2, which is characterized in that the step 2
Middle heating time 2min；Step 3 is that the first passage rolling mold is uniformly first preheated to 220 DEG C, and step 2 is heated to malleable temperature
The bar of degree is put into the roll mill of roller diameter 1200mm and is rolled for the first time, and irregular section rolled blank is made；Step 4 is first
Second passage rolling mold is uniformly preheated to 220 DEG C, irregular section rolled blank made from step 3 is put into roller diameter
Secondary rolling is carried out in the roll mill of 1200mm, and variable cross-section track connecting plate is made and rolls prefabricated blank.
4. a kind of processing method of variable cross-section track connecting plate according to claim 2, which is characterized in that the step 2
Heating time 3min；Step 3 is that the first passage rolling mold is uniformly first preheated to 320 DEG C, and step 2 is heated to malleable temperature
Bar be put into the roll mill of roller diameter 800mm and rolled for the first time, irregular section rolled blank is made；Step 4. is first wanted
Second passage rolling mold is uniformly preheated to 320 DEG C, irregular section rolled blank made from step 3 is put into roller diameter
Secondary rolling is carried out in the roll mill of 800mm, and variable cross-section track connecting plate is made and rolls prefabricated blank；Step 5. finish-forging finishing mold
Preheating temperature is to 320 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710602361.7A CN107225150B (en) | 2017-07-21 | 2017-07-21 | A kind of processing method of variable cross-section track connecting plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710602361.7A CN107225150B (en) | 2017-07-21 | 2017-07-21 | A kind of processing method of variable cross-section track connecting plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107225150A CN107225150A (en) | 2017-10-03 |
| CN107225150B true CN107225150B (en) | 2019-12-03 |
Family
ID=59957122
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710602361.7A Active CN107225150B (en) | 2017-07-21 | 2017-07-21 | A kind of processing method of variable cross-section track connecting plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107225150B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111570691B (en) * | 2020-05-13 | 2021-08-13 | 安徽中志轨道交通装备制造有限公司 | Forging mechanism for continuously forging and pressing switch rail and preparation process of forged and pressed switch rail |
| CN112170480A (en) * | 2020-09-10 | 2021-01-05 | 宝钢特钢韶关有限公司 | Method for improving rolling of H13 steel grade and H13 round steel |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2040173A (en) * | 1979-01-30 | 1980-08-28 | Rovex Ltd | Fish-plate for model railway track |
| CN2122019U (en) * | 1991-07-20 | 1992-11-18 | 山东省机械进出口公司淄博合营工具厂 | Ripper shaping die set |
| CN201267858Y (en) * | 2008-08-15 | 2009-07-08 | 北京机电研究所 | Roll forging mold of railway goods train coupler yoke frame |
| CN204710989U (en) * | 2015-05-27 | 2015-10-21 | 四川广旺能源发展（集团）有限责任公司机械制造分公司 | A kind of road clamping plate forming machine |
| CN105537487A (en) * | 2016-01-27 | 2016-05-04 | 山东远大特材科技股份有限公司 | Manufacturing method for special-shaped fishplate and dies |
| CN106424510A (en) * | 2016-10-21 | 2017-02-22 | 北京机电研究所 | Design method for wagon axle roll forging forming roll forging die |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102922291A (en) * | 2012-11-26 | 2013-02-13 | 山东泰金精密成型制品有限公司 | Joint production equipment for producing engine connecting rod finished products by round steel |
-
2017
- 2017-07-21 CN CN201710602361.7A patent/CN107225150B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2040173A (en) * | 1979-01-30 | 1980-08-28 | Rovex Ltd | Fish-plate for model railway track |
| CN2122019U (en) * | 1991-07-20 | 1992-11-18 | 山东省机械进出口公司淄博合营工具厂 | Ripper shaping die set |
| CN201267858Y (en) * | 2008-08-15 | 2009-07-08 | 北京机电研究所 | Roll forging mold of railway goods train coupler yoke frame |
| CN204710989U (en) * | 2015-05-27 | 2015-10-21 | 四川广旺能源发展（集团）有限责任公司机械制造分公司 | A kind of road clamping plate forming machine |
| CN105537487A (en) * | 2016-01-27 | 2016-05-04 | 山东远大特材科技股份有限公司 | Manufacturing method for special-shaped fishplate and dies |
| CN106424510A (en) * | 2016-10-21 | 2017-02-22 | 北京机电研究所 | Design method for wagon axle roll forging forming roll forging die |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107225150A (en) | 2017-10-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104722702B (en) | Supercritical unit high temperature steam pipeline forging molding process | |
| CN102500733A (en) | Forging method for efficiently healing internal hole-type defects of steel ingot | |
| CN104907473A (en) | Method for hot processing of large die flat steel forged piece | |
| CN110665962B (en) | Pass system and rolling method of narrow-flange asymmetric steel rail beam hot rolling mill | |
| CN102848135A (en) | Production method of super-thick steel plate with even performance in thickness direction | |
| CN107225150B (en) | A kind of processing method of variable cross-section track connecting plate | |
| CN102126121B (en) | New process combining forging and rolling | |
| CN108080547B (en) | A kind of long-axis forging prefabricated blank method and device | |
| CN105537487B (en) | Various shaped fishplate manufacture method and mould | |
| CN104625627B (en) | A kind of preparation method of plasma rotating electrode titanium alloy electrode rod | |
| CN104815936A (en) | Forge forming method and special mold for fork type pieces such as high reinforcing bars and thin web plates | |
| CN110695286A (en) | High manganese steel frog insert double-station die forging forming die and forming method | |
| CN100493821C (en) | Manufacturing method of the coupler yoke for railway wagon | |
| CN112475163B (en) | Full-automatic caterpillar track section forging process adopting multi-station die | |
| CN113182470A (en) | Near-net forming manufacturing process for hundred-ton-grade special-shaped cross-section ring forging | |
| CN201415493Y (en) | Shaping device of large-sized thin-wall titanium alloy head | |
| CN108237197A (en) | A kind of forging method for improving the flaw detection of structural steel large-sized ring part | |
| CN103736887B (en) | A kind ofly reduce the forging method that heat send slab ingot forging times | |
| CN110479947B (en) | Copying forging method for transition section of hydrogenation reactor | |
| CN108620519B (en) | A kind of high-alloy steel ultra-wide slab six sides forging operating method | |
| CN110238336A (en) | A kind of high-precision forging closing forging technology | |
| CN211248140U (en) | High manganese steel frog inserts double-station die forging forming die | |
| ITMI970338A1 (en) | METAL BAR PRODUCTION PROCESS | |
| CN107262526A (en) | The new processing method and mould of a kind of railroad tie plate | |
| CN115351068A (en) | Thermal forming processing technology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20191108 Address after: 271000 government station of Ma Zhuang Town, Daiyue District, Tai'an, Shandong Applicant after: Tai'an ruilang Technology Co. Ltd. Address before: 271200 No. 396 development avenue, Tai'an Development Zone, Shandong Applicant before: Shandong Taifeng Zongheng Technology Co. Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |