WO2004079018A2 - Adapter of chrome-nickel steel for weld connections and the method of its welding - Google Patents

Adapter of chrome-nickel steel for weld connections and the method of its welding Download PDF

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Publication number
WO2004079018A2
WO2004079018A2 PCT/CZ2004/000011 CZ2004000011W WO2004079018A2 WO 2004079018 A2 WO2004079018 A2 WO 2004079018A2 CZ 2004000011 W CZ2004000011 W CZ 2004000011W WO 2004079018 A2 WO2004079018 A2 WO 2004079018A2
Authority
WO
WIPO (PCT)
Prior art keywords
chrome
adapter
steel
nickel
welding
Prior art date
Application number
PCT/CZ2004/000011
Other languages
French (fr)
Other versions
WO2004079018A3 (en
Inventor
Petr Cerny
Original Assignee
Dt Vyhybkárna A Mostárna A.S.
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 Dt Vyhybkárna A Mostárna A.S. filed Critical Dt Vyhybkárna A Mostárna A.S.
Publication of WO2004079018A2 publication Critical patent/WO2004079018A2/en
Publication of WO2004079018A3 publication Critical patent/WO2004079018A3/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/001—Interlayers, transition pieces for metallurgical bonding of workpieces
    • B23K35/004—Interlayers, transition pieces for metallurgical bonding of workpieces at least one of the workpieces being of a metal of the iron group
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K35/00—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
    • B23K35/22—Rods, electrodes, materials, or media, for use in soldering, welding, or cutting characterised by the composition or nature of the material
    • B23K35/24—Selection of soldering or welding materials proper
    • B23K35/30—Selection of soldering or welding materials proper with the principal constituent melting at less than 1550 degrees C
    • B23K35/3053—Fe as the principal constituent
    • B23K35/308—Fe as the principal constituent with Cr as next major constituent
    • B23K35/3086—Fe as the principal constituent with Cr as next major constituent containing Ni or Mn
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/50—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for welded joints
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/002—Ferrous alloys, e.g. steel alloys containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/02—Iron or ferrous alloys
    • B23K2103/04—Steel or steel alloys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/02—Iron or ferrous alloys
    • B23K2103/04—Steel or steel alloys
    • B23K2103/05—Stainless steel
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/04—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rails

Definitions

  • the invention relates to an adapter of chrome-nickel steel designed for weld connections of switch parts of manganese steel with a rail of carbon steel and the method of its welding.
  • the manganese austenitic steel In comparison with the carbon steel for rails, the manganese austenitic steel has a completely different characteristics and that is why it is not possible to connect these two types of steel by direct welding. While the rail is made of hardenable material that needs slow cooling-down from the welding temperature so as to avoid development of brittle martensitic structure, the manganese austenitic steel would become brittle in case of carbide precipitation along the borders of kernels as a result of slow cooling-down.
  • connection of switch parts mainly the railway and tram switches, with rails of carbon steel include mechanical connections using connections and high-strength screws or combined with bevel glued joints.
  • Such connected switch parts are consequently adjusted in such a way so as they can be installed by welding into the route so as the weld is connecting rails of carbon steel.
  • an adapter of chrome-nickel steel for weld connections of the switch part of manganese steel with the carbon steel rail. It is based mainly on the fact that the adapter of chrome-nickel steel contains ferrum, chrome, nickel also the % weight portion of 0,06%o up to 0,09%) of carbon, 0,5% of manganese as a maximum, 0,3%) up to 1%> of silica, 0,69% up to 0,9%o of niobium.
  • the adapter to contain nickel in the volume of 8,0% up to 9,0%o of weight and chrome in the extent of 18,5% up to 19,5% of weight.
  • the adapter which contained - together with ferrum - the weight % of 0,064%) of carbon, 0,3%) of manganese, 0,53% of silica, 18,93%) of chrome, 8,36%o of nickel and 0,69% of niobium.
  • the advantage of the adapter of chrome-nickel steel with the above stated chemical composition in comparison with the current status of the technique includes its universal character due to necessity of use of various types of switch manganese steel, better welding abilities without necessity of thermal processing ofthe rail steel or its pre-heating.
  • the advantageous characters of adapter welding according to this invention is based mainly on the fact that in case of an adapter with length of 5 up to 8 mm there is performed the weld with the rail at first, which is followed by a weld with the switch part of manganese steel and the heat from this weld tempers the first weld.
  • the value of deflexion reaches 25 mm and the endurance limit values reach 200 N/mm2 as a minimum in case of 2. 106 cycles.
  • connection is performed by flash joint welding in such a way, that within the first welding procedure the adapter of chrome - nickel steel is welded to the rail and after adjustment of the adapter by saw cutting to the length of 18 mm, the second welding procedure follows, including the adapter welding with the already welded rail of manganese steel, while the heat of the second welding transfers through the adapter to the first weld and so the first weld is tempered.
  • Such tempering of the first weld avoid development of brittle structures, respectively there are melted the possibly created brittle structures from the first welding procedure.
  • connection of switch parts of manganese steel with a rail of carbon steel using an adapter of chrome-nickel steel may be advantageously used in production of railway and tram switches with high demands referring strength and resistance of welded parts.
  • the adapter of chrome - nickel steel is advantageously designed for connections of the switch part of steel reaching the Manganese Super Special quality or the UIC 866 quality with the carbon steel rail reaching the 900A quality or 95 CSD-NK quality level.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Arc Welding In General (AREA)

Abstract

An adapter of chrome-nickel steel for the weld connection of the switch part of manganese steel and the rail of carbon steel said adapter contains in % weight 0,06% up to 0,09% of carbon, 0,5% of manganese as a maximum, 0,3% up to 1% of silicon, 0,69% up to 0,9% of niobium, 8.0% up to 9,0% nickel, 18,5% up to 19,5% chrome, the balance being iron and unavoidable impurities.

Description

Adapter of chrome-nickel steel for weld connections and the method of its welding
Technical Field
The invention relates to an adapter of chrome-nickel steel designed for weld connections of switch parts of manganese steel with a rail of carbon steel and the method of its welding.
Background Art
In comparison with the carbon steel for rails, the manganese austenitic steel has a completely different characteristics and that is why it is not possible to connect these two types of steel by direct welding. While the rail is made of hardenable material that needs slow cooling-down from the welding temperature so as to avoid development of brittle martensitic structure, the manganese austenitic steel would become brittle in case of carbide precipitation along the borders of kernels as a result of slow cooling-down.
The hitherto known and used connection of switch parts, mainly the railway and tram switches, with rails of carbon steel include mechanical connections using connections and high-strength screws or combined with bevel glued joints. Such connected switch parts are consequently adjusted in such a way so as they can be installed by welding into the route so as the weld is connecting rails of carbon steel.
The disadvantage of mechanical connection of switch parts using connections and high-strength screws or in combination with bevel glued joints, is tearing of screws and glued joints and their necessary replacement due to different thermal expansion of connected materials on the route, which negatively affects ride of railway and tram sets.
Other known methods of connecting the switch parts of manganese steel include use of an insert of austenitic steel with high Cr and Ni contents, allowing their welding with a rail of perlite steel using flash joint welding. Development of a high-quality weld is conditioned by annealing of the insert welded with the perlitic rail before welding with the manganese rail with the purpose of removal of possibly created martensite, respectively preheating of the tail steel before the welding process so as to avoid fast cooling-down of the rail steel after welding and also to avoid appearance of a martensitic structure.
Disclosure of the Invention
The above described problems can be eliminated by an adapter of chrome-nickel steel for weld connections of the switch part of manganese steel with the carbon steel rail. It is based mainly on the fact that the adapter of chrome-nickel steel contains ferrum, chrome, nickel also the % weight portion of 0,06%o up to 0,09%) of carbon, 0,5% of manganese as a maximum, 0,3%) up to 1%> of silica, 0,69% up to 0,9%o of niobium.
From the chemical point of view it seems to be advantageous for the adapter to contain nickel in the volume of 8,0% up to 9,0%o of weight and chrome in the extent of 18,5% up to 19,5% of weight.
An extremely preferred proved to be the adapter, which contained - together with ferrum - the weight % of 0,064%) of carbon, 0,3%) of manganese, 0,53% of silica, 18,93%) of chrome, 8,36%o of nickel and 0,69% of niobium.
The advantage of the adapter of chrome-nickel steel with the above stated chemical composition in comparison with the current status of the technique includes its universal character due to necessity of use of various types of switch manganese steel, better welding abilities without necessity of thermal processing ofthe rail steel or its pre-heating.
The advantageous characters of adapter welding according to this invention is based mainly on the fact that in case of an adapter with length of 5 up to 8 mm there is performed the weld with the rail at first, which is followed by a weld with the switch part of manganese steel and the heat from this weld tempers the first weld.
Description of a sample
As a sample it is possible to set the adapter of chrome - nickel steel for mutual connection of a switch part of manganese steel with a carbon steel, containing - together with ferrum - the weight % of 0,064% of carbon, 0,3% of manganese, 0,53% of silica, 18,93% of chrome, 8,36% of nickel and 0,69% of niobium.
In case of such a joint, the value of deflexion reaches 25 mm and the endurance limit values reach 200 N/mm2 as a minimum in case of 2. 106 cycles.
The connection is performed by flash joint welding in such a way, that within the first welding procedure the adapter of chrome - nickel steel is welded to the rail and after adjustment of the adapter by saw cutting to the length of 18 mm, the second welding procedure follows, including the adapter welding with the already welded rail of manganese steel, while the heat of the second welding transfers through the adapter to the first weld and so the first weld is tempered. Such tempering of the first weld avoid development of brittle structures, respectively there are melted the possibly created brittle structures from the first welding procedure.
It can be seen that analogous values can be reached in case of limit composition, i.e. with the low contents - except for ferrum - the weight %> of 0,06% of carbon, 0,2%> of manganese, 0,3%o of silica, 0,69% of niobium, 8% of nickel and 18,5% of chrome, respectively with the highest contents - except for ferrum - the weight % of 0,09%) of carbon, 0,5% of manganese, 1,0% of silica, 0,9% of niobium, 9% of nickel and 19,5% of chrome.
Industrial applicability
Connection of switch parts of manganese steel with a rail of carbon steel using an adapter of chrome-nickel steel may be advantageously used in production of railway and tram switches with high demands referring strength and resistance of welded parts.
The adapter of chrome - nickel steel is advantageously designed for connections of the switch part of steel reaching the Manganese Super Special quality or the UIC 866 quality with the carbon steel rail reaching the 900A quality or 95 CSD-NK quality level.

Claims

PATENT CLAIMS
1 . An adapter of chrome-nickel steel for the weld connection of the switch part of manganese steel and the rail of carbon steel, characterised by the fact that it contains ferrum, chrome, nickel also the %> weight portion of 0,06% up to 0,09%> of carbon, 0,5% of manganese as a maximum, 0.3%o up to 1 % of silica, 0,69% up to 0,9% of niobium.
2. An adapter of chrome-nickel steel according to claim 1 , characterised by the fact that it contains nickel in the extent of 8,0% up to 9,0%> of weight.
3. An adapter of chrome-nickel steel according to claims 1 and 2, characterised by the fact that it contains chrome in the extent of 1 8,5% up to 1 9,5 % of weight.
4. An adapter of chrome-nickel steel according to any of the claims 1 up to 2, characterised by the fact that it contains - except for ferrum - the weight %> of 0,064% of carbon, 0,3%o of manganese, 0,53 % of silica, 1 8,93 % of chrome and 8,36% of nickel and 0,69% of niobium.
5. The method of welding the adapter according to claims 1 up to 3 or 4, characterised by the fact that in case of an adapter with length of 5 up to 8 mm, there is at first performed the first weld with the rail and then there is performed the weld with the switch part of manganese steel and the heat of this weld tempers the first weld.
PCT/CZ2004/000011 2003-03-05 2004-02-26 Adapter of chrome-nickel steel for weld connections and the method of its welding WO2004079018A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CZPV2003-648 2003-03-05
CZ2003648A CZ2003648A3 (en) 2003-03-05 2003-03-05 Adapter of chrome-nickel steel for weld connections and the method of its welding

Publications (2)

Publication Number Publication Date
WO2004079018A2 true WO2004079018A2 (en) 2004-09-16
WO2004079018A3 WO2004079018A3 (en) 2004-10-28

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111151920A (en) * 2019-12-31 2020-05-15 江苏新华合金有限公司 3425LC welding strip and production process thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2251725A1 (en) * 1972-10-21 1974-04-25 Messer Griesheim Gmbh Welding together high and low-alloyed steels - using niobium-contg low-all-oyed steel barrier to prevent migration of carbon into weld
US5170932A (en) * 1990-07-20 1992-12-15 Voest-Alpine Eisenbahnsysteme Gesellschaft M.B.H. Method for connection of railway point components consisting of cast hard manganese steel or manganese steel rails to a rail made from carbon steel
US5304777A (en) * 1991-04-24 1994-04-19 Manoir Industries Method of connecting a manganese steel part to another carbon steel part and assembly thus obtained
DE20105890U1 (en) * 2000-04-14 2001-06-28 Dt Vyhybkarna A Mostarna Spol Connection of a switch section made of manganese steel with a rail made of carbon steel

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2251725A1 (en) * 1972-10-21 1974-04-25 Messer Griesheim Gmbh Welding together high and low-alloyed steels - using niobium-contg low-all-oyed steel barrier to prevent migration of carbon into weld
US5170932A (en) * 1990-07-20 1992-12-15 Voest-Alpine Eisenbahnsysteme Gesellschaft M.B.H. Method for connection of railway point components consisting of cast hard manganese steel or manganese steel rails to a rail made from carbon steel
US5304777A (en) * 1991-04-24 1994-04-19 Manoir Industries Method of connecting a manganese steel part to another carbon steel part and assembly thus obtained
DE20105890U1 (en) * 2000-04-14 2001-06-28 Dt Vyhybkarna A Mostarna Spol Connection of a switch section made of manganese steel with a rail made of carbon steel

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
C.W.WEGST: "Stahlschl}ssel" 1986 , VERLAG STAHLSCHL]SSEL WEGST GMBH , MARBACH (D) XP002283409 page 271; example X10CRNINB189 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111151920A (en) * 2019-12-31 2020-05-15 江苏新华合金有限公司 3425LC welding strip and production process thereof

Also Published As

Publication number Publication date
WO2004079018A3 (en) 2004-10-28
CZ2003648A3 (en) 2004-10-13

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