CN104625636A - Train wheel casting-forging composite forming method - Google Patents

Train wheel casting-forging composite forming method Download PDF

Info

Publication number
CN104625636A
CN104625636A CN201410837175.8A CN201410837175A CN104625636A CN 104625636 A CN104625636 A CN 104625636A CN 201410837175 A CN201410837175 A CN 201410837175A CN 104625636 A CN104625636 A CN 104625636A
Authority
CN
China
Prior art keywords
train wheel
roll
strand
temperature
train
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.)
Pending
Application number
CN201410837175.8A
Other languages
Chinese (zh)
Inventor
李永堂
秦芳诚
付建华
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.)
Taiyuan University of Science and Technology
Original Assignee
Taiyuan University of Science and Technology
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Taiyuan University of Science and Technology filed Critical Taiyuan University of Science and Technology
Priority to CN201410837175.8A priority Critical patent/CN104625636A/en
Publication of CN104625636A publication Critical patent/CN104625636A/en
Pending legal-status Critical Current

Links

Classifications

    • 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

A train wheel casting-forging composite forming method aims at solving the technical problems that an existing rolled steel train wheel producing method has many procedures, is large in device investment and high in production cost, wastes materials and is high in energy consumption. The method includes the following steps of conducting alloy smelting, wherein metal raw materials are heated till the temperature ranges from 1655 DEG C to 1685 DEG C to be smelted, and molten steel formed after smelting is cooled in a furnace; casting a train wheel ingot blank, wherein the molten steel is poured into a metal die after the temperature of the molten steel falls to the range of 1540 DEG C to 1560 DEG C, and the train wheel ingot blank is obtained after cooling is conducted; heating the obtained train wheel ingot blank; conducting rolling, wherein the heated train wheel ingot blank is placed on a rolling machine to be rolled, the feed amount of a main roller ranges from 0.5 mm/s to 3.0 mm/s, the pressure ranges from 300 KN to 900 KN, the radial diameter of a hub reaches the diameter of a hot forging part, and the hub, a rim and a step face are formed; conducting bending, wherein after rolling is completed, the temperature falls to the range of 980 DEG C to 1000 DEG C, and hot bending forming is conducted on a train wheel disk through a bending machine. The method has the advantages of being short in technological process, simple in procedure, small in device investment, high in raw material utilization rate and capable of saving energy.

Description

A kind of method of train wheel casting forging combined shaping
Technical field
The invention belongs to train wheel formed machining field, be specifically related to the method for a kind of train wheel casting forging combined shaping.
Background technology
Existing train wheel is mainly divided into cast steel wheel and rolled steel wheel.The carbon content of cast steel wheel material is higher, and cast steel wheel production technology is melting-graphite casting mould-heat treatment-machined, this technique is simple, dimensional accuracy is high, reduce energy consumption, but the wheel plasticity produced is low, poor toughness, the requirement of railway to high-speed wheel and heavy-duty wheel can not be met, rolled steel wheel material therefor reduces carbon content, and carry out vanadium-containing alloy process, its production technology is smelting-continuous cast round billets-heating-jumping-up-preform-punching-rolling-press-bending, the train wheel dense structure that the method is produced, comprehensive mechanical performance is good, although the train wheel that above-mentioned train wheel production technology is produced can meet the technical requirement of railway to high-speed wheel and heavy-duty wheel, but it is many to there is operation in the method, equipment investment is large, production cost is high, waste of material and the serious shortcoming of energy resource consumption.
Summary of the invention
The object of the invention is to solve that the operation that existing rolling steel train wheel production method exists is many, equipment investment is large, production cost is high, waste of material and the serious technical problem of energy resource consumption, provide a kind of train wheel to cast the method for forging combined shaping.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A method for train wheel casting forging combined shaping, wherein: it comprises alloy smelting, casting train wheel strand, heating, roll off and press-bending step, and concrete steps are as follows:
1) alloy smelting: adopt 60tUHP electric arc furnaces to be heated to 1655 ~ 1685 DEG C to raw metal and smelt, smelts after forming molten steel and stops heating;
2) train wheel strand is cast: when liquid steel temperature is down to 1540 ~ 1560 DEG C, poured into by molten steel in metal pattern, inject cooling water in metal pattern die wall, after making it rapidly cooling to room temperature, obtain train wheel strand;
3) heat: the train wheel strand rotary heating furnace of acquisition is heated to roll off initial temperature 1050 ~ 1080 DEG C;
4) roll off: be placed on the horizontal milling train of seven rollers by the train wheel strand after heating and carry out roll off, the home roll amount of feeding is 0.5 ~ 3.0mm/s, and pressure is 300 ~ 900KN, make wheel rim radial direction arrive hot forging diameter, wheel rim, wheel rim and tread are shaped;
5) bend: after roll off completes, when temperature is down to 980 ~ 1000 DEG C, utilize 40MN tri-beam four post double-action drawing bullodozer to carry out hot pressing o ing to train wheel disc, pressure is 20 ~ 30MN, and pressing mold speed is 55 ~ 60mm/s.
Described raw metal is medium high carbon micro alloyed steel, the percentage by weight of its each element is: C:0.42% ~ 0.64%, Mn:0.75% ~ 0.80%, Cr:0.16% ~ 0.3%, Si:0.4% ~ 0.46%, Cu:0.09%, Mo:0.02% ~ 0.08%, V:0.02% ~ 0.06%, Ni:0.05%, P :≤0.02%, S :≤0.02%, and all the other are Fe.
Owing to present invention employs technique scheme, the operation solving the existence of existing rolled steel wheel production method is many, and equipment investment is large, and production cost is high, waste of material and the serious technical problem of energy resource consumption, compared with background technology, it is short that the present invention has technological process, and operation is simple, equipment investment is little, utilization rate of raw materials is high, the advantage of economize energy, and the toughness of the train wheel of the present invention's production and cracking resistance damage performance improve greatly.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in detail:
Embodiment 1:
A method for train wheel casting forging combined shaping, wherein: it comprises alloy smelting, casting train wheel strand, heating, roll off and press-bending step, and concrete steps are as follows:
1) alloy smelting: adopt 60tUHP electric arc furnaces to be heated to 1655 DEG C to raw metal and smelt, smelt after forming molten steel and stop heating, molten steel cools with stove;
2) train wheel strand is cast: when liquid steel temperature is down to 1540 DEG C, poured into by molten steel in metal pattern, inject cooling water in metal pattern die wall, after making it rapidly cooling to room temperature, obtain train wheel strand;
3) heat: the train wheel strand rotary heating furnace of acquisition is heated to roll off initial temperature 1050 DEG C;
4) roll off: be placed on the horizontal milling train of seven rollers by the train wheel strand after heating and carry out roll off, the home roll amount of feeding is 0.5mm/s, and pressure is 300KN, make wheel rim radial direction arrive hot forging diameter, wheel rim, wheel rim and tread are shaped;
5) bend: after roll off completes, when temperature is down to 980 DEG C, utilize 40MN tri-beam four post double-action drawing bullodozer to carry out hot pressing o ing to train wheel disc, pressure is 20MN, and pressing mold speed is 55mm/s.
Raw metal in above-described embodiment is medium high carbon micro alloyed steel, in described medium high carbon micro alloyed steel, the percentage by weight of each element is: C:0.42% ~ 0.64%, Mn:0.75% ~ 0.80%, Cr:0.16% ~ 0.3%, Si:0.4% ~ 0.46%, Cu:0.09%, Mo:0.02% ~ 0.08%, V:0.02% ~ 0.06%, Ni:0.05%, P :≤0.02%, S :≤0.02%, and all the other are Fe.
Embodiment 2:
A method for train wheel casting forging combined shaping, wherein: it comprises alloy smelting, casting train wheel strand, heating, roll off and press-bending step, and concrete steps are as follows:
1) alloy smelting: adopt 60tUHP electric arc furnaces to be heated to 1685 DEG C to raw metal and smelt, smelt after forming molten steel and stop heating, molten steel cools with stove;
2) train wheel strand is cast: when liquid steel temperature is down to 1560 DEG C, poured into by molten steel in metal pattern, inject cooling water in metal pattern die wall, after making it rapidly cooling to room temperature, obtain train wheel strand;
3) heat: the train wheel strand rotary heating furnace of acquisition is heated to roll off initial temperature 1080 DEG C;
4) roll off: be placed on the horizontal milling train of seven rollers by the train wheel strand after heating and carry out roll off, the home roll amount of feeding is 3.0mm/s, and pressure is 900KN, make wheel rim radial direction arrive hot forging diameter, wheel rim, wheel rim and tread are shaped;
5) bend: after roll off completes, when temperature is down to 1000 DEG C, utilize 40MN tri-beam four post double-action drawing bullodozer to carry out hot pressing o ing to train wheel disc, pressure is 30MN, and pressing mold speed is 60mm/s.
Identical with embodiment 1 of raw metal in the present embodiment.
Embodiment 3:
A method for train wheel casting forging combined shaping, is characterized in that: it comprises alloy smelting, casting train wheel strand, heating, roll off and press-bending step, and concrete steps are as follows:
1) alloy smelting: adopt 60tUHP electric arc furnaces to be heated to 1660 DEG C to raw metal and smelt, smelt after forming molten steel and stop heating, molten steel cools with stove;
2) train wheel strand is cast: when liquid steel temperature is down to 1550 DEG C, poured into by molten steel in metal pattern, inject cooling water in metal pattern die wall, after making it rapidly cooling to room temperature, obtain train wheel strand;
3) heat: the train wheel strand rotary heating furnace of acquisition is heated to roll off initial temperature 1065 DEG C;
4) roll off: be placed on the horizontal milling train of seven rollers by the train wheel strand after heating and carry out roll off, the home roll amount of feeding is 1.75mm/s, and pressure is 600KN, make wheel rim radial direction arrive hot forging diameter, wheel rim, wheel rim and tread are shaped;
5) bend: after roll off completes, when temperature is down to 990 DEG C, utilize 40MN tri-beam four post double-action drawing bullodozer to carry out hot pressing o ing to train wheel disc, pressure is 25MN, and pressing mold speed is 57mm/s.
Identical with embodiment 1 of raw metal in the present embodiment.
The invention is not restricted to above-mentioned concrete embodiment, as long as the invention using medium high carbon micro alloyed steel to manufacture train wheel through alloy smelting, casting train wheel strand, heating, roll off and press-bending step all falls into protection scope of the present invention, above-mentioned alloy smelting raw metal is heated to 1655 ~ 1685 DEG C smelt, and smelts after forming molten steel and cool with stove; Casting train wheel strand is when liquid steel temperature is down to 1540 ~ 1560 DEG C, is poured into by molten steel in metal pattern, obtains train wheel strand after cooling; Heating is that the train wheel strand of acquisition is heated to roll off initial temperature 1050 ~ 1080 DEG C; Roll off be by heating after train wheel strand be placed on milling train and carry out roll off, the home roll amount of feeding is 0.5 ~ 3.0mm/s, and pressure is 300 ~ 900KN, and make wheel rim radial direction arrive hot forging diameter, wheel rim, wheel rim and tread are shaped; Press-bending is after being completed by roll off, and when temperature is down to 980 ~ 1000 DEG C, utilize bullodozer to carry out hot pressing o ing to train wheel disc, pressure is 20 ~ 30MN, and pressing mold speed is 55 ~ 60mm/s.

Claims (2)

1. a method for train wheel casting forging combined shaping, is characterized in that: it comprises alloy smelting, casting train wheel strand, heating, roll off and press-bending step, and concrete steps are as follows:
1) alloy smelting: adopt 60tUHP electric arc furnaces to be heated to 1655 ~ 1685 DEG C to raw metal and smelt, smelts after forming molten steel and stops heating;
2) train wheel strand is cast: when liquid steel temperature is down to 1540 ~ 1560 DEG C, poured into by molten steel in metal pattern, inject cooling water in metal pattern die wall, after making it rapidly cooling to room temperature, obtain train wheel strand;
3) heat: the train wheel strand rotary heating furnace of acquisition is heated to roll off initial temperature 1050 ~ 1080 DEG C;
4) roll off: be placed on the horizontal milling train of seven rollers by the train wheel strand after heating and carry out roll off, the home roll amount of feeding is 0.5 ~ 3.0mm/s, and pressure is 300 ~ 900KN, make wheel rim radial direction arrive hot forging diameter, wheel rim, wheel rim and tread are shaped;
5) bend: after roll off completes, when temperature is down to 980 ~ 1000 DEG C, utilize 40MN tri-beam four post double-action drawing bullodozer to carry out hot pressing o ing to train wheel disc, pressure is 20 ~ 30MN, and pressing mold speed is 55 ~ 60mm/s.
2. the method for train wheel casting forging combined shaping according to claim 1, it is characterized in that: described raw metal is medium high carbon micro alloyed steel, the percentage by weight of its each element is: C:0.42% ~ 0.64%, Mn:0.75% ~ 0.80%, Cr:0.16% ~ 0.3%, Si:0.4% ~ 0.46%, Cu:0.09%, Mo:0.02% ~ 0.08%, V:0.02% ~ 0.06%, Ni:0.05%, P :≤0.02%, S :≤0.02%, and all the other are Fe.
CN201410837175.8A 2014-12-30 2014-12-30 Train wheel casting-forging composite forming method Pending CN104625636A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410837175.8A CN104625636A (en) 2014-12-30 2014-12-30 Train wheel casting-forging composite forming method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410837175.8A CN104625636A (en) 2014-12-30 2014-12-30 Train wheel casting-forging composite forming method

Publications (1)

Publication Number Publication Date
CN104625636A true CN104625636A (en) 2015-05-20

Family

ID=53205113

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410837175.8A Pending CN104625636A (en) 2014-12-30 2014-12-30 Train wheel casting-forging composite forming method

Country Status (1)

Country Link
CN (1) CN104625636A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN107186157A (en) * 2017-06-14 2017-09-22 吉林大学 The casting forging combination technological method of non-hardened and tempered steel Crank Blank

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0788724A (en) * 1993-09-16 1995-04-04 Junji Baba Manufacture of two-piece aluminum wheel
CN101219434A (en) * 2008-01-25 2008-07-16 广州珠江钢铁有限责任公司 Method for producing steel for automobile wheel based on bar strip continuous casting and rolling flow path
CN101817134A (en) * 2010-03-22 2010-09-01 太原科技大学 Short-flow casting and rolling composite forming method for ferrule piece
CN103160754A (en) * 2013-03-05 2013-06-19 大同爱碧玺铸造有限公司 Micro alloy steel cast steel wheel and manufacture method
CN103659199A (en) * 2013-12-30 2014-03-26 太原重工轨道交通设备有限公司 Method for achieving forging rolling thermal forming of wheel with deep-basin type spoke plate structure

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0788724A (en) * 1993-09-16 1995-04-04 Junji Baba Manufacture of two-piece aluminum wheel
CN101219434A (en) * 2008-01-25 2008-07-16 广州珠江钢铁有限责任公司 Method for producing steel for automobile wheel based on bar strip continuous casting and rolling flow path
CN101817134A (en) * 2010-03-22 2010-09-01 太原科技大学 Short-flow casting and rolling composite forming method for ferrule piece
CN103160754A (en) * 2013-03-05 2013-06-19 大同爱碧玺铸造有限公司 Micro alloy steel cast steel wheel and manufacture method
CN103659199A (en) * 2013-12-30 2014-03-26 太原重工轨道交通设备有限公司 Method for achieving forging rolling thermal forming of wheel with deep-basin type spoke plate structure

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
宋光鑫: "火车轮预成形工艺分析及数值模拟", 《中国优秀硕士学位论文》 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN107186157A (en) * 2017-06-14 2017-09-22 吉林大学 The casting forging combination technological method of non-hardened and tempered steel Crank Blank

Similar Documents

Publication Publication Date Title
CN104148558B (en) The production method of T-shaped ring-type forge piece blank reheating in SB564 UNS N06690 alloy large-size
CN104439933B (en) Technological method for improving performance of large-diameter carbon steel cast and rolled flange part
CN102950269B (en) Manufacturing method of vertical centrifugal composite cast steel supporting roll
CN104911321B (en) Extra-thick steel plate production process of plastic dies steel
CN103805902B (en) A kind of Cutting free high-speed steel roll manufacturing process of rotary casting
CN104278200A (en) High-hot-strength spray-formed hot work die steel and preparation method thereof
CN104139147B (en) The forging method of T-shaped ring-type forge piece blank reheating in SB564 UNS N06690 alloy large-size
CN103774058B (en) For the guide wheel preparation method of high precision KOCKS guide assembly
CN105112802A (en) Method for preparing wear-resistant plastic moulds
CN103966519A (en) CrMnSi wear-resistant cast steel lining plate and manufacturing method thereof
CN103357836A (en) Production method of alloy plate
CN104384470A (en) Manufacturing process for bi-metal composite roll collars
CN102974635B (en) The pressing method of molybdenum alloy seamless pipe
CN104372250A (en) Bearing ring blank and casting-rolling composite process thereof
CN103909092B (en) A kind of heating once and rolling method of Cr12MoV cold-work die band steel
CN101805820A (en) Prehardening treatment method of plastic mould steel
CN104625636A (en) Train wheel casting-forging composite forming method
CN103924164A (en) High chrome alloy steel material and preparation method thereof
CN105316577A (en) Manufacturing method for large-scale high-carbon semi-steel material eccentric roll collar
CN105112626A (en) Manufacturing process for high-toughness forged and pressed anti-abrasion liner plates
CN104625014B (en) The method that the nearly solid state pressure of a kind of train wheel shapes
CN102628146A (en) High-nickel-chromium-alloy semi-steel roll and manufacturing method thereof
CN103567402A (en) Production process for chromium-zirconium-copper copper pipes
CN102873307A (en) Method for remelting roller surface of crush roller and casting abrasion-resistant alloy layer
CN104227350A (en) Preparing method of retained mandrel

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20150520

RJ01 Rejection of invention patent application after publication