CN105887583A - Composite slide bed bedplate formed by means of forging for high-speed railway turnout - Google Patents

Composite slide bed bedplate formed by means of forging for high-speed railway turnout Download PDF

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Publication number
CN105887583A
CN105887583A CN201610326758.3A CN201610326758A CN105887583A CN 105887583 A CN105887583 A CN 105887583A CN 201610326758 A CN201610326758 A CN 201610326758A CN 105887583 A CN105887583 A CN 105887583A
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China
Prior art keywords
slider bed
bed platen
welding
base
platen
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Application number
CN201610326758.3A
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Chinese (zh)
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CN105887583B (en
Inventor
田原
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Shenyang Dingran New Material Co Ltd
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Shenyang Dingran New Material Co Ltd
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Classifications

    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01BPERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B7/00Switches; Crossings
    • E01B7/02Tongues; Associated constructions
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01BPERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
    • E01B7/00Switches; Crossings

Abstract

The invention discloses a composite slide bed bedplate formed by means of forging for high-speed railway turnout. The composite slide bed bedplate comprises a lower layer and an upper layer. The lower layer is a base material, and the upper layer is a covering material; the base material is a rolled carbon steel plate; the covering material is a welding wire layer. Welding wires are welded on the base material by the aid of gas-shield automatic welding processes to obtain a blank, and the blank is heated until the temperature of the blank reaches 900DEG C, and then is subjected to forge forming by the aid of dies. The composite slide bed bedplate has the advantages of excellent toughness and remarkable comprehensive technical performance.

Description

A kind of forging molding railway high speed track switch compound slider bed platen
Technical field
The present invention relates to railway equipment field, a kind of railway high speed track switch, more specifically Say it is a kind of railway high speed track switch built-up welding compound slider bed platen.
Background technology
Slider bed platen is the vitals of railway high speed track switch, is carrying point tongue and high speed row The security platform of car, slider bed platen direct relation high-speed switch and the utilization of bullet train and operation Safety.At present, high-speed switch slider bed platen design material is ZG230-45, this kind of slider bed platform Plate proves to have the disadvantage in that through practice
1, strength character is relatively low, wear no resistance, and the work surface of carrying tongue easily occurs that pressure mill is recessed Groove;
2, the higher 0.23-0.30 of coefficient of friction, after corrosion, coefficient of friction increases further, causes Switch convert resistance is bigger;
3, the upper rust of corrosion resistance difference;
4, frequent oiling and polishing are needed;
5, the long workload of curing time is big, and maintenance cost is higher;
6, there is the hidden danger of generation personal safety accident.
For ensureing the application safety of track switch, railway interests of various countries has put into substantial amounts of fund, to height Speed track switch slider bed platen conducts in-depth research, and its main purpose is:
1, the strength character of slider bed platen, enough anti-wear performances and shock resistance are strengthened, Eliminate pressure mill groove;
2, ensure the enough hardness of slider bed platen work surface, reduce coefficient of friction, reduce track switch Conversion resistance force;
3, the corrosion resistance of slider bed platen is improved, it is ensured that in the phase, do not limit rust and tool under arms Standby good utilization performance;
4, reduce the maintenance time to slider bed platen, reduce maintenance cost;
5, eliminate safe hidden trouble, it is ensured that traffic safety.
Summary of the invention
In order to solve above-mentioned technical problem, overcome the deficiencies in the prior art, it is an object of the invention to The railway high speed track switch built-up welding compound slider bed platen that a kind of function admirable, cost performance are high is provided, This forging molding slider bed platen not only has a good obdurability, but also has excellent comprehensive Technical performance.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of forging molding railway high speed track switch compound slider bed platen, slider bed platen is arranged on the end On plate, described slider bed platen arranging tongue or core rail, described slider bed platen is upper and lower two-layer Structure composite forms, and described lower floor is base material, and described upper strata is for covering material;It is characterized in that described The preparation method of slider bed platen is: base material is rolling carbon steel sheet;Covering material is welding wire layer, utilizes gas Wire welding is connected on base material by body protection automatic welding process makes stock;Again stock is heated up to Use mould forging molding for 900 degrees Celsius;The material composition of described welding wire is in mass ratio: C0.05-0.08%, Cr13.8-14.2%, Si0.45-0.52%, Mo0.73-0.81%, Mn1.1-1.4%, Surplus is Fe;The preparation method of described welding wire is: according to mentioned component by warp after each material mixing Smelt and be cast into steel billet for 1500-1600 degree Celsius, then by steel billet through 900 degrees Celsius of forgings Cause bar, then through being drawn into the steel wire of diameter 0.8-1.6mm as wlding.
Described base material is Q235 steel plate.
Described slider bed platen gross thickness >=40mm, base material thickness >=cover material thickness.
Described slider bed platen interface shear strength >=285MPa.
Described slider bed platen surface hardness HB >=320.
Described slider bed platen surface coefficient of friction≤0.23.
Avoid the trachoma in welding process, the bond strength that improve base material with cover material >= 285MPa。
Described technological process includes: base material prepares and surface preparation → cover material is smelted and made casting Steel billet → cover material is forged into round steel bar → cover material and is drawn into the specification of welding wire. and → gas shielded arc welding is multiple Close test → welding current, voltage, the recombination velocity of gas shield welding, composite thickness, compound width Regulation and control → forging molding → machining → quality inspection technique;Described gas-shield automatic welding work Skill technological parameter is as follows: recombination current 160-170A, between voltage 16-20 volt, and arc length 20, Inductance 0.
The invention have the advantage that
1, advanced technology, function admirable, cost performance are high, reduce manufacturing cost 5-10%;
2, high-wear resistance is 3-5 times of ZG230-45, eliminates pressure mill groove;
3, good obdurability does not ftractures, excellent shock resistance and welding performance;
4, coefficient of friction low≤0.23, switch convert resistance is little, and switch point housing is good;
5, good corrosion resistance is difficult to rust, lacks oiling or exempts from oiling;
6, good environmental adaptability, few maintenance or non-maintaining;
7, maintenance 35% is reduced;
8, the hidden danger of initiation stranger's body security incident is eliminated;
9, use performance safety reliable and stable, extend service life, it is ensured that train operating safety Steadily.
10, through forging molding, it is to avoid the trachoma in welding recombination process.
11, through forging, the consumption of steel and the allowance of machining are more saved.
Accompanying drawing explanation
Fig. 1 is to arrange tongue structural representation on slider bed platen;
Fig. 2 is to arrange core rail structural representation on slider bed platen;In figure, 1 is rail, and 2 are Tongue, 3 cover material, and 4 is base material, and 5 is base plate, and 6 is core rail.
Detailed description of the invention
Illustrating the present invention below in conjunction with the accompanying drawings, as shown in Figure 1 and Figure 2, slider bed platen sets Put on base plate 5, described slider bed platen arranges tongue 2 or core rail 6, described slider bed platen Being composited for upper and lower double-layer structure, described lower floor is base material 4, and described upper strata is for covering material 3.
The preferred technical solution of the present invention is: base material is Q235 steel plate, thickness >=20mm, Tensile strength >=450MPa, yield strength >=245MPa;Covering material is the self-control containing Cr >=13% Wlding.
Described slider bed platen upper and lower double-layer structure complex method is Gas Shielded welding.Described bury Arc bead-welding technology flow process includes: base material prepares and surface preparation → cover material is smelted and made cast steel The specification of base → be forged into round steel bar → be drawn into welding wire. → gas shield welding composite testing → welding machine electricity Stream, voltage, the recombination velocity of gas shield welding, composite thickness, compound width regulation and control → forging molding → machining → quality inspection technique.
Described slider bed platen gross thickness >=40mm, base material 4 thickness >=cover material 3 thickness.
Described slider bed platen shear strength >=285MPa.
Described slider bed platen surface hardness HB >=320.
Described slider bed platen coefficient of friction≤0.23.
The most following embodiment of preparation method of slider bed platen;
Embodiment 1
1, base material prepares: base material is rolling carbon steel sheet Q235;
2, cover material to prepare: covering material is self-control welding wire, cover material smelting and make casting steel billet → forging Become the specification of round steel bar → be drawn into welding wire.;Composite material composition is in mass ratio: C0.05%, Cr13.8%, Si0.45%, Mo0.73%, Mn1.1%, surplus is Fe;According to above-mentioned Each material is smelted through 1500 degrees Celsius and is cast into steel billet by composition, then by steel billet through 900 Degree Celsius it is forged into bar, then through being drawn into the steel wire of diameter 0.8mm as wlding.
3, built-up welding combination process: gas-shield automatic welding technique, the skill designed by clad steel plate Art requirement, recombination current 160A, between voltage 16, arc length 20, inductance 0;
4, the forging molding of slider bed platen: clad steel plate is heated up to 900 degrees Celsius with mould Forging molding;
5, slider bed platen machine adds manufacture: add making by the technology requirement machine of slider bed platen design.
Embodiment 2
1, base material prepares: base material is rolling carbon steel sheet Q235;
2, cover material to prepare: covering material is self-control welding wire, cover material smelting and make casting steel billet → forging Become the specification of round steel bar → be drawn into welding wire.;Composite material composition is in mass ratio: C0.08%, Cr14.2%, Si0.52%, Mo0.81%, Mn1.4%, surplus is Fe;According to above-mentioned Each material is smelted through 1600 degrees Celsius and is cast into steel billet by composition, then by steel billet through 900 Degree Celsius it is forged into bar, then through being drawn into the steel wire of diameter 1.6 as wlding.
3, built-up welding combination process: gas-shield automatic welding technique, the skill designed by clad steel plate Art requirement, recombination current 170A, between voltage 20, arc length 20, inductance 0;
4, the forging molding of slider bed platen: clad steel plate is heated up to 900 degrees Celsius with mould Forging molding;
5, slider bed platen machine adds manufacture: add making by the technology requirement machine of slider bed platen design.
Embodiment 2
Embodiment 3
1, base material prepares: base material is rolling carbon steel sheet Q235;
2, cover material to prepare: covering material is self-control welding wire, cover material smelting and make casting steel billet → forging Become the specification of round steel bar → be drawn into welding wire.;Composite material composition: C0.06%, Cr14%, Si0.50%, Mo0.78%, Mn1.2%, surplus is Fe;According to mentioned component by each material through 1550 Degree Celsius smelt and be cast into steel billet, then steel billet being forged into bar through 900 degrees Celsius, Again through being drawn into the steel wire of diameter 1.6 as wlding.
3, built-up welding combination process: gas-shield automatic welding technique, the skill designed by clad steel plate Art requirement, recombination current 170A, between voltage 20, arc length 20, inductance 0;
4, the forging molding of slider bed platen: clad steel plate is heated up to 900 degrees Celsius with mould Forging molding;
5, slider bed platen machine adds manufacture: add making by the technology requirement machine of slider bed platen design.
In the present invention, have employed self-control welding wire formation and cover material, be to ensure that slider bed platen meets Mechanical property requirements.Principle is as follows:
Q235 is carbon structural steel, and its hardening heat is 950 DEG C, in welding process, Mo, Mn in welding wire dissolves in Q235, improves weld layer quenching degree, especially when Be heated up to 900 degrees Celsius with mould forging molding time, improve slider bed platen mechanical performance want Ask.The content of Mo, Mn should meet ratio disclosed in this invention, otherwise, it is impossible to realizes sliding The comprehensive mechanical performance requirement of table plate, if the content of Mn is more than 1.2%, then weld layer , during forging molding, easily there is the defect of layering in metal grain fast growth;And the ginseng of welding procedure Number is to ensure that trace element can occur metallographic group at a predetermined temperature with the metallic element of base material The change knitted, as temperature during welding, time are unsatisfactory for, Mo, Mn fail to be completely dissolved, Then it is unfavorable for improving weld layer quenching degree.

Claims (8)

1. a forging molding railway high speed track switch compound slider bed platen, slider bed platen is arranged on On base plate, described slider bed platen arranging tongue or core rail, described slider bed platen is upper and lower two Rotating fields is composited, and described lower floor is base material, and described upper strata is for covering material;It is characterized in that institute The preparation method stating slider bed platen is: base material is rolling carbon steel sheet;Covering material is welding wire layer, utilizes Wire welding is connected on base material and makes stock by gas-shield automatic welding technique;Again stock is heated up to Use mould forging molding for 900 degrees Celsius;The material composition of described welding wire is in mass ratio: C0.05-0.08%, Cr13.8-14.2%, Si0.45-0.52%, Mo0.73-0.81%, Mn1.1-1.4%, Surplus is Fe;The preparation method of described welding wire is: according to mentioned component by warp after each material mixing Smelt and be cast into steel billet for 1500-1600 degree Celsius, then by steel billet through 900 degrees Celsius of forgings Cause bar, then through being drawn into the steel wire of diameter 0.8-1.6mm as wlding.
Slider bed platen the most according to claim 1, it is characterised in that: described base material is Q235 steel plate.
Slider bed platen the most according to claim 1, it is characterised in that: described slider bed platform Plate gross thickness >=40mm, base material thickness >=cover material thickness.
Slider bed platen the most according to claim 1, it is characterised in that: described slider bed platen Interface shear strength >=285MPa.
Slider bed platen the most according to claim 1, it is characterised in that: described slider bed platen Case hardness HB >=320.
Slider bed platen the most according to claim 1, it is characterised in that: described slider bed platform Plate skin-friction coefficient≤0.23.
Slider bed platen the most according to claim 1, it is characterised in that: avoid welding During trachoma, the bond strength >=285MPa that improve base material with cover material.
Slider bed platen the most according to claim 1, it is characterised in that: described technique stream Journey includes: base material prepares and surface preparation → cover material is smelted and made casting steel billet → cover material forging Round steel bar → cover material is become to be drawn into the specification of welding wire. → gas shielded arc welding composite testing → welding machine electricity Stream, voltage, the recombination velocity of gas shield welding, composite thickness, compound width regulation and control → forging molding → machining → quality inspection technique;Described gas-shield automatic welding technology process parameter is such as Under: between recombination current 160-170A, voltage 16-20 volt, arc length 20, inductance 0.
CN201610326758.3A 2016-05-17 2016-05-17 A kind of compound slider bed platen of forging molding railway high speed track switch Active CN105887583B (en)

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Application Number Priority Date Filing Date Title
CN201610326758.3A CN105887583B (en) 2016-05-17 2016-05-17 A kind of compound slider bed platen of forging molding railway high speed track switch

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108914022A (en) * 2018-08-02 2018-11-30 李庆杰 A kind of preparation method of cast-sintering slider bed platen
CN108914119A (en) * 2018-08-02 2018-11-30 李庆杰 A kind of preparation method incuding cladding slider bed platen
CN110306384A (en) * 2019-07-01 2019-10-08 株洲安成实业有限公司 A kind of compound slider bed platen of railway switch and preparation method thereof

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4007734A1 (en) * 1990-03-10 1991-09-12 Metallgesellschaft Ag SLIDING BEARING
CN101704169A (en) * 2009-11-23 2010-05-12 中国航空工业集团公司北京航空材料研究院 Welding wire for gas shielded welding of aging martensitic stainless steel
CN102363251A (en) * 2011-10-13 2012-02-29 中国船舶重工集团公司第七二五研究所 High-toughness all-austenitic stainless steel welding wire
CN203639757U (en) * 2014-01-09 2014-06-11 王永升 Railway high-speed turnout composite sliding bed platen
CN204385568U (en) * 2014-11-25 2015-06-10 辽宁恒泰铁路器材制造有限公司 The sliding table of a kind of bimetallic liquid cladding die forging track switch
US20150354145A1 (en) * 2013-01-16 2015-12-10 Oiles Corporation Sliding plate and floor plate for turnout
CN204919229U (en) * 2015-07-23 2015-12-30 宋焯 Wear -resisting anticorrosive smooth movable bed

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4007734A1 (en) * 1990-03-10 1991-09-12 Metallgesellschaft Ag SLIDING BEARING
CN101704169A (en) * 2009-11-23 2010-05-12 中国航空工业集团公司北京航空材料研究院 Welding wire for gas shielded welding of aging martensitic stainless steel
CN102363251A (en) * 2011-10-13 2012-02-29 中国船舶重工集团公司第七二五研究所 High-toughness all-austenitic stainless steel welding wire
US20150354145A1 (en) * 2013-01-16 2015-12-10 Oiles Corporation Sliding plate and floor plate for turnout
CN203639757U (en) * 2014-01-09 2014-06-11 王永升 Railway high-speed turnout composite sliding bed platen
CN204385568U (en) * 2014-11-25 2015-06-10 辽宁恒泰铁路器材制造有限公司 The sliding table of a kind of bimetallic liquid cladding die forging track switch
CN204919229U (en) * 2015-07-23 2015-12-30 宋焯 Wear -resisting anticorrosive smooth movable bed

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108914022A (en) * 2018-08-02 2018-11-30 李庆杰 A kind of preparation method of cast-sintering slider bed platen
CN108914119A (en) * 2018-08-02 2018-11-30 李庆杰 A kind of preparation method incuding cladding slider bed platen
CN110306384A (en) * 2019-07-01 2019-10-08 株洲安成实业有限公司 A kind of compound slider bed platen of railway switch and preparation method thereof
CN110306384B (en) * 2019-07-01 2021-07-20 株洲安成实业有限公司 Composite sliding bed bedplate for railway turnout and manufacturing method thereof

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Address after: 110000 room 1111, No. 7-1, Tianci street, Hunnan New District, Shenyang City, Liaoning Province

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