CN110358966A - A kind of railway axle Steel material and its processing method - Google Patents
A kind of railway axle Steel material and its processing method Download PDFInfo
- Publication number
- CN110358966A CN110358966A CN201910763878.3A CN201910763878A CN110358966A CN 110358966 A CN110358966 A CN 110358966A CN 201910763878 A CN201910763878 A CN 201910763878A CN 110358966 A CN110358966 A CN 110358966A
- Authority
- CN
- China
- Prior art keywords
- steel material
- processing method
- railway axle
- axle steel
- temperature
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/002—Hybrid process, e.g. forging following casting
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/0006—Adding metallic additives
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/06—Deoxidising, e.g. killing
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/10—Handling in a vacuum
-
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
-
- 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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
- C21D1/28—Normalising
-
- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/004—Heat treatment of ferrous alloys containing Cr and Ni
-
- 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/005—Heat treatment of ferrous alloys containing 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
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/008—Heat treatment of ferrous alloys containing Si
-
- 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
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/005—Modifying the physical properties by deformation combined with, or followed by, heat treatment of ferrous alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
-
- 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
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
-
- 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
-
- 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
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
-
- 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
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
-
- 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
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
-
- 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
- C22C38/46—Ferrous alloys, e.g. steel alloys containing chromium with nickel with vanadium
Abstract
A kind of railway axle Steel material and its processing method, it belongs to smelting and processing of metals field.The present invention includes following component: the C of 0.46~0.58wt%, Al of the Mo of Cu ,≤0.10wt% of Cr ,≤0.15wt% of the S of P ,≤0.010wt% of Mn ,≤0.015wt% of the Si of 0.17~0.40wt%, 0.75~1.00wt%, the Ni of 0.18~0.25wt%, 0.20~0.27wt%, the V of 0.02~0.08wt%, 0.015~0.045wt% etc., surplus Fe.Present invention process process are as follows: electric furnace smelting or converter smelting → LF furnace refining → RH or VD vacuum processing → continuous casting → enter to cheat slow cooling or hot sending → Forge Heating → dydraulic forging cogging → forging stock heating → rolling → slow cooling → normalizing, tempering.Material of the present invention is fine and close, uniformly.
Description
Technical field
The invention belongs to smelting and processing of metals fields；More particularly to a kind of railway axle Steel material and its processing method.
Background technique
Axle is one of the critical component of rolling stock operation, and the superiority and inferiority of quality is directly related to conevying efficiency and peace
Entirely, axle is primarily subjected to bending in vehicle operation, reverses and/or bending combined load and made by the impact that recycles
With, therefore harsh service condition requires axle steel to have excellent mechanical property.
China railways lorry axle is largely LZ50 steel grade, and production is mainly formed after rolling by molding or continuous casting billet
Axle blank, major defect compactness are low, and do not have quantizating index to it.Modern railways carriers operation high speed, loading capacity
It steps up and requires axle that there is better mechanical property, the compactness for improving axle steel is that promotion axle performance is most simple and effective
Method, existing railway axle tested with bloom production low power by GB/T1979 standard, it is desirable that General Loosen, center are dredged
Pine, segregation≤2.0 grades.
Summary of the invention
Object of the present invention is to provide a kind of railcar aiming at the problem that existing axle steel fine and close lower and no quantization index
Axle-steel material and its processing method.
The invention is realized by the following technical scheme:
A kind of railway axle Steel material, a kind of railway axle include following component with Steel material:
Mn ,≤0.015wt%'s of the C of 0.46~0.58wt%, the Si of 0.17~0.40wt%, 0.75~1.00wt%
P, the Cu, of Cr ,≤0.15wt% of≤0.010wt% S, the Ni of 0.18~0.25wt%, 0.20~0.27wt%≤
The H of O ,≤2.0PPm of Al ,≤15PPm of the Mo of 0.10wt%, the V of 0.02~0.08wt%, 0.015~0.045wt%, it is remaining
Amount is Fe.
A kind of railway axle Steel material of the present invention, a kind of railway axle with Steel material include below at
Point: S, 0.22wt%'s of P, 0.008wt% of Mn, 0.011wt% of Si, 0.84wt% of C, 0.22wt% of 0.52wt%
The O of Al, 11PPm of V, 0.025wt% of Mo, 0.06wt% of Cu, 0.08wt% of Cr, 0.11wt% of Ni, 0.24wt%,
The H of 1.2PPm, surplus Fe.
A kind of processing method of railway axle Steel material, a kind of processing method of railway axle Steel material
Process flow are as follows: electric furnace smelting or converter smelting → LF furnace refining → RH or VD vacuum processing → continuous casting → enter to cheat slow cooling or hot sending
→ Forge Heating → dydraulic forging cogging → forging stock heating → rolling → slow cooling → normalizing, tempering.
A kind of processing method of railway axle Steel material of the present invention, a kind of railway axle Steel material
Processing method in the electric furnace smelting or mass fraction of C is 0.10~0.40wt% when converter smelting, the mass fraction of P≤
0.008wt%, tapping temperature are 1640~1700 DEG C.
A kind of processing method of railway axle Steel material of the present invention, a kind of railway axle Steel material
Processing method in the refining of LF furnace be that 6m/t feeds aluminum steel, deoxidier is aluminum shot, carbon dust, wherein 0.4~0.5kg/ of aluminum shot dosage
T, carbon dust 0.3~0.4kg/t of dosage, aluminum shot, carbon dust total 0.8~1.0kg/t of dosage are used, white slag refining time 15 after mixing
~30min.
A kind of processing method of railway axle Steel material of the present invention, a kind of railway axle Steel material
Processing method in RH or VD to be vacuum-treated be vacuum degree≤67Pa, 20~40min of retention time, break it is empty after the soft blow time 10~
20min。
A kind of processing method of railway axle Steel material of the present invention, a kind of railway axle Steel material
Processing method in 20~35 DEG C of the continuous casting degree of superheat, pulling rate 0.20m/min；Enter to cheat slow cooling time 80~90h of slow cooling, cheats temperature out
≤ 200 DEG C, it is heat-fed 500~600 DEG C of temperature.
A kind of processing method of railway axle Steel material of the present invention, a kind of railway axle Steel material
Processing method in 1200~1250 DEG C of Forge Heating temperature, keep the temperature 3~5h；Hydraulic forging press uses a jumping-up, once pulls out
Long technique, 600~650mm of outside diameter after upsetting process upsetting pull out the initial passage use≤20mm light reduction of process, subsequent
Forging process guarantees 2 120~140mm of reduction in pass, is forged into ∮ 450mm circular blank, 800~880 DEG C of final forging temperature.
A kind of processing method of railway axle Steel material of the present invention, a kind of railway axle Steel material
Processing method forging stock 11.5~12.5h of heating time, wherein 3~5h of bringing-up section time, 7~8h of soaking time, tapping temperature
1250~1400 DEG C；2~5 75~85mm of reduction in pass in the operation of rolling；Steel billet enters burial pit, slow cooling 60 in 30 minutes after rolling
~70h cheats temperature≤200 DEG C out.
A kind of processing method of railway axle Steel material of the present invention, a kind of railway axle Steel material
Processing method in steel billet go out cheat after be heat-treated, 820~850 DEG C of normalizing temperature, keep the temperature 8h, air-cooled to 190~210 DEG C are returned
Fire, 520~550 DEG C of tempering temperature, 10~12h of soaking time.
A kind of processing method of railway axle Steel material of the present invention, forging technology refer to using ∮ 650mm specification
Continuous casting billet, by dydraulic forging at 450mm continuous cast round billets, this process passes through a jumping-up, the forging technology once pulled out, upsetting
Thick process guarantees outside diameter >=600mm after upsetting, pulls out the initial passage use≤20mm light reduction of process, removes iron scale
To prevent iron scale to be pressed into and fold defect generation, subsequent forging process guarantee 2 reductions in pass >=120mm is thereby guaranteed that
Continuous casting billet has biggish deflection in deformation process, so that the defects of loose inside original continuous casting billet in forging process
Abundant soldering is obtained, the slab compared with compactness is obtained.
A kind of processing method of railway axle Steel material of the present invention, the heating steel billet after forging in 15 is extremely
1250~1280 DEG C are rolled, rolling requirements at least 2 reductions in pass >=75mm.Final rolling is known as the specification that meets the requirements
Steel billet.
A kind of material of the processing method of railway axle Steel material of the present invention is produced as axle blank, fine and close thickness
25~30mm is spent, compactness is high.
A kind of processing method of railway axle Steel material of the present invention, final processing are used for railroad train axle.
Detailed description of the invention
Fig. 1 is a kind of No. 1 fine and close thickness of railway axle Steel material of one method of specific embodiment preparation
Spend picture；
Fig. 2 is a kind of No. 2 fine and close thickness of railway axle Steel material of one method of specific embodiment preparation
Spend picture；
Fig. 3 is a kind of No. 3 compacted zones of railway axle Steel material of one method of specific embodiment preparation
Thickness picture；
Fig. 4 is a kind of No. 4 fine and close thickness of railway axle Steel material of one method of specific embodiment preparation
Spend picture；
Fig. 5 is a kind of No. 5 fine and close thickness of railway axle Steel material of one method of specific embodiment preparation
Spend picture.
Specific embodiment
Specific embodiment 1:
A kind of railway axle Steel material, a kind of railway axle Steel material includes following component: 0.52wt%
C, 0.22wt% Si, 0.84wt% Mn, 0.011wt% P, 0.008wt% S, 0.22wt% Ni, 0.24wt%
Cr, 0.11wt% Cu, 0.08wt% Mo, 0.06wt% V, 0.025wt% Al, 11PPm O, 1.2PPm H,
Surplus is Fe.
A kind of processing method of railway axle Steel material described in present embodiment, a kind of railcar axle-steel
The process flow of the processing method of material are as follows: electric furnace smelting or converter smelting → LF furnace refining → RH or VD vacuum processing → continuous casting
→ enter to cheat slow cooling or hot sending → Forge Heating → dydraulic forging cogging → forging stock heating → rolling → slow cooling → normalizing, tempering.
A kind of processing method of railway axle Steel material described in present embodiment, a kind of railcar axle-steel
The electric furnace smelting or mass fraction of C is 0.10wt% when converter smelting in the processing method of material, the mass fraction of P≤
0.008wt%, 1650 DEG C of tapping temperature.
A kind of processing method of railway axle Steel material described in present embodiment, a kind of railcar axle-steel
The refining of LF furnace is that 6m/t feeds aluminum steel in the processing method of material, and deoxidier is aluminum shot, carbon dust, wherein aluminum shot dosage 0.45kg/
T, carbon dust dosage 0.4kg/t, aluminum shot, carbon dust total dosage >=0.8kg/t are used, white slag refining time 20min after mixing.
A kind of processing method of railway axle Steel material described in present embodiment, a kind of railcar axle-steel
It is vacuum degree≤67Pa, retention time 30min that RH or VD, which is vacuum-treated, in the processing method of material, breaks the soft blow time after sky
12min。
A kind of processing method of railway axle Steel material described in present embodiment, a kind of railcar axle-steel
20~35 DEG C of the continuous casting degree of superheat in the processing method of material, pulling rate 0.20m/min；Enter to cheat slow cooling time slow cooling 80h, cheats temperature out
≤ 200 DEG C, it is heat-fed 520 DEG C of temperature.
A kind of processing method of railway axle Steel material described in present embodiment, a kind of railcar axle-steel
1200~1250 DEG C of Forge Heating temperature in the processing method of material keep the temperature 3~5h；Hydraulic forging press uses jumping-up, one
Secondary pulling technique, outside diameter 600mm after upsetting process upsetting pull out the initial passage use≤20mm light reduction of process, subsequent
Forging process guarantees 2 reduction in pass 120mm, is forged into ∮ 450mm circular blank, 800~880 DEG C of final forging temperature.
A kind of processing method of railway axle Steel material described in present embodiment, processing method forging stock heating time
11.5h, wherein bringing-up section time 3h, soaking time 7h, 1250 DEG C of tapping temperature；2 reduction in pass 75mm in the operation of rolling；Steel
Base enters burial pit in 30 minutes after rolling, slow cooling 60h cheats temperature≤200 DEG C out.
A kind of processing method of railway axle Steel material described in present embodiment, a kind of railcar axle-steel
Steel billet is heat-treated after going out hole in the processing method of material, 840 DEG C of normalizing temperature, keeps the temperature 8h, air-cooled to 190~210 DEG C are returned
Fire, 530 DEG C of tempering temperature, 10~12h of soaking time.
A kind of processing method of railway axle Steel material described in present embodiment, a kind of railcar of preparation
The dense layer thickness picture of axle-steel material is as Figure 1-Figure 5, and performance is as shown in table 1
The performance of 1 railway axle Steel material of table
A kind of processing method of railway axle Steel material, the material dense layer thickness of preparation described in present embodiment are
25~30mm, 30~35mm.
Specific embodiment 2:
A kind of railway axle Steel material, a kind of railway axle Steel material includes following component: 0.52wt%
C, 0.26wt% Si, 0.81wt% Mn, 0.013wt% P, 0.003wt% S, 0.18wt% Ni, 0.21wt%
Cr, 0.05wt% Cu, 0.10wt% Mo, 0.04wt% V, 0.026wt% Al, 15PPm O, 2.0PPm H,
Surplus is Fe.
A kind of processing method of railway axle Steel material described in present embodiment, a kind of railcar axle-steel
The process flow of the processing method of material are as follows: electric furnace smelting or converter smelting → LF furnace refining → RH or VD vacuum processing → continuous casting
→ enter to cheat slow cooling or hot sending → Forge Heating → dydraulic forging cogging → forging stock heating → rolling → slow cooling → normalizing, tempering.
A kind of processing method of railway axle Steel material described in present embodiment, a kind of railcar axle-steel
The mass fraction of C is 0.20wt% in electric furnace smelting or converter smelting in the processing method of material, the mass fraction of P≤
0.008wt%, 1640 DEG C of tapping temperature.
A kind of processing method of railway axle Steel material described in present embodiment, a kind of railcar axle-steel
In the processing method of material LF furnace refining be 6m/t feed aluminum steel, deoxidier be aluminum shot, carbon dust, wherein aluminum shot dosage 0.4~
0.5kg/t, carbon dust 0.3~0.4kg/t of dosage, aluminum shot, carbon dust total dosage >=0.8kg/t are used after mixing, when white slag refines
Between 15min.
A kind of processing method of railway axle Steel material described in present embodiment, a kind of railcar axle-steel
It is vacuum degree≤67Pa, retention time 20min that RH or VD, which is vacuum-treated, in the processing method of material, breaks the soft blow time after sky
10min。
A kind of processing method of railway axle Steel material described in present embodiment, a kind of railcar axle-steel
20~35 DEG C of the continuous casting degree of superheat in the processing method of material, pulling rate 0.20m/min；Enter to cheat slow cooling time slow cooling >=80h, out hole temperature
≤ 200 DEG C of degree is heat-fed 500 DEG C of temperature.
A kind of processing method of railway axle Steel material described in present embodiment, a kind of railcar axle-steel
1200~1250 DEG C of Forge Heating temperature in the processing method of material keep the temperature 3~5h；Hydraulic forging press uses jumping-up, one
Secondary pulling technique, outside diameter 600mm after upsetting process upsetting pull out the initial passage use≤20mm light reduction of process, subsequent
Forging process guarantees 2 reduction in pass 120mm, is forged into ∮ 450mm circular blank, 820 DEG C of final forging temperature.
A kind of processing method of railway axle Steel material described in present embodiment, a kind of railcar axle-steel
The processing method forging stock heating time 12h of material, wherein bringing-up section time 4h, soaking time 7.5h, 1300 DEG C of tapping temperature；It rolls
3 reduction in pass 75mm during system；Steel billet enters burial pit in 30 minutes after rolling, slow cooling 65h cheats temperature≤200 DEG C out.
A kind of processing method of railway axle Steel material described in present embodiment, a kind of railcar axle-steel
Steel billet is heat-treated after going out hole in the processing method of material, 840 DEG C of normalizing temperature, keeps the temperature 8h, air-cooled to 190~210 DEG C are returned
Fire, 530 DEG C of tempering temperature, 10~12h of soaking time.
A kind of processing method of railway axle Steel material described in present embodiment, the material of processing carry out performance survey
Examination is as shown in table 2:
A kind of performance of railway axle Steel material described in table 2
A kind of processing method of railway axle Steel material, the material dense layer thickness of preparation described in present embodiment are
25~30mm, pattern segregation 0.
Specific embodiment 3:
A kind of railway axle Steel material, a kind of railway axle Steel material includes following component: 0.50wt%
C, 0.26wt% Si, 0.85wt% Mn, 0.008wt% P, 0.016wt% S, 0.19wt% Ni, 0.23wt%
Cr, 0.05wt% Cu, 0.10wt% Mo, 0.04wt% V, 0.035wt% Al, 15PPm O, 2.0PPm H,
Surplus is Fe.
A kind of processing method of railway axle Steel material described in present embodiment, a kind of railcar axle-steel
The process flow of the processing method of material are as follows: electric furnace smelting or converter smelting → LF furnace refining → RH or VD vacuum processing → continuous casting
→ enter to cheat slow cooling or hot sending → Forge Heating → dydraulic forging cogging → forging stock heating → rolling → slow cooling → normalizing, tempering.
A kind of processing method of railway axle Steel material described in present embodiment, a kind of railcar axle-steel
The electric furnace smelting or mass fraction of C is 0.30wt% when converter smelting in the processing method of material, the mass fraction of P≤
0.008wt%, 1660 DEG C of tapping temperature.
A kind of processing method of railway axle Steel material described in present embodiment, a kind of railcar axle-steel
In the processing method of material LF furnace refining be 6m/t feed aluminum steel, deoxidier be aluminum shot, carbon dust, wherein aluminum shot dosage 0.4~
0.5kg/t, carbon dust 0.3~0.4kg/t of dosage, aluminum shot, carbon dust total dosage >=0.8kg/t are used after mixing, when white slag refines
Between 25min.
A kind of processing method of railway axle Steel material described in present embodiment, a kind of railcar axle-steel
It is vacuum degree≤67Pa, retention time 25min that RH or VD, which is vacuum-treated, in the processing method of material, breaks the soft blow time after sky
20min。
A kind of processing method of railway axle Steel material described in present embodiment, a kind of railcar axle-steel
20~35 DEG C of the continuous casting degree of superheat in the processing method of material, pulling rate 0.20m/min；Enter to cheat slow cooling time slow cooling 80h, cheats temperature out
≤ 200 DEG C, it is heat-fed 550 DEG C of temperature.
A kind of processing method of railway axle Steel material described in present embodiment, a kind of railcar axle-steel
1200~1250 DEG C of Forge Heating temperature in the processing method of material keep the temperature 3~5h；Hydraulic forging press uses jumping-up, one
Secondary pulling technique, outside diameter 600mm after upsetting process upsetting pull out the initial passage use≤20mm light reduction of process, subsequent
Forging process guarantees 2 reduction in pass 120mm, is forged into ∮ 450mm circular blank, 825 DEG C of final forging temperature.
A kind of processing method of railway axle Steel material described in present embodiment, a kind of railcar axle-steel
The processing method forging stock heating time 11.5h of material, wherein bringing-up section time 3h, soaking time 7h, 1250 DEG C of tapping temperature；It rolls
5 reduction in pass 75mm during system；Steel billet enters burial pit in 30 minutes after rolling, temperature≤200 DEG C are cheated in slow cooling >=60h out.
A kind of processing method of railway axle Steel material described in present embodiment, a kind of railcar axle-steel
Steel billet is heat-treated after going out hole in the processing method of material, 845 DEG C of normalizing temperature, keeps the temperature 8h, air-cooled to 190~210 DEG C are returned
Fire, 535 DEG C of tempering temperature, 10~12h of soaking time.
A kind of processing method of railway axle Steel material described in present embodiment, the material of processing carry out performance survey
Examination is as shown in table 3:
A kind of performance of railway axle Steel material described in table 3
A kind of processing method of railway axle Steel material, the material dense layer thickness of preparation described in present embodiment are
30~35mm, pattern segregation 0.
Specific embodiment 4:
A kind of railway axle Steel material, a kind of railway axle Steel material includes following component: 0.46wt%
The S of P ,≤0.010wt% of Mn ,≤0.015wt% of Si, 0.75wt% of C, 0.17wt%, 0.18~0.25wt%
The Al, of V, 0.015wt% of Mo, 0.02wt% of Cu ,≤0.10wt% of Cr ,≤0.15wt% of Ni, 0.20wt%≤
The H of O ,≤2.0PPm of 15PPm, surplus Fe.
Specific embodiment 5:
A kind of railway axle Steel material, a kind of railway axle Steel material includes following component: 0.58wt%
C, 0.40wt% Si, 1.00wt% Mn ,≤0.015wt% P ,≤0.010wt% S, 0.25wt% Ni,
Al ,≤15PPm of V, 0.045wt% of Mo, 0.08wt% of Cu ,≤0.10wt% of Cr ,≤0.15wt% of 0.27wt%
O ,≤2.0PPm H, surplus Fe.
Specific embodiment 6:
A kind of processing method of railway axle Steel material, a kind of processing method of railway axle Steel material
Process flow are as follows: electric furnace smelting or converter smelting → LF furnace refining → RH or VD vacuum processing → continuous casting → enter to cheat slow cooling or hot sending
→ Forge Heating → dydraulic forging cogging → forging stock heating → rolling → slow cooling → normalizing, tempering.
Specific embodiment 7:
A kind of processing method of railway axle Steel material, a kind of railway according to specific embodiment six
The electric furnace smelting or mass fraction of C is 0.10~0.40wt%, the matter of P when converter smelting in the processing method of axles steel material
Score≤0.008wt% is measured, tapping temperature is 1640~1700 DEG C.
Specific embodiment 8:
A kind of processing method of railway axle Steel material, a kind of railway according to specific embodiment six
The refining of LF furnace is that 6m/t feeds aluminum steel in the processing method of axles steel material, and deoxidier is aluminum shot, carbon dust, wherein aluminum shot dosage
0.4~0.5kg/t, carbon dust 0.3~0.4kg/t of dosage, aluminum shot, carbon dust total 0.8~1.0kg/t of dosage are used after mixing, white
15~30min of slag refining time.
Specific embodiment 9:
A kind of processing method of railway axle Steel material, a kind of railway according to specific embodiment six
It is vacuum degree≤67Pa, 20~40min of retention time that RH or VD, which is vacuum-treated, in the processing method of axles steel material, after breaking sky
10~20min of soft blow time.
Specific embodiment 10:
A kind of processing method of railway axle Steel material, a kind of railway according to specific embodiment six
20~35 DEG C of the continuous casting degree of superheat in the processing method of axles steel material, pulling rate 0.20m/min；Enter to cheat slow cooling time slow cooling 80~
90h cheats temperature≤200 DEG C out, is heat-fed 500~600 DEG C of temperature.
Specific embodiment 11:
A kind of processing method of railway axle Steel material, a kind of railway according to specific embodiment six
1200~1250 DEG C of Forge Heating temperature in the processing method of axles steel material keep the temperature 3~5h；Hydraulic forging press is using primary
Jumping-up once pulls out technique, 600~650mm of outside diameter after upsetting process upsetting, and the pulling initial passage use≤20mm of process is small
Drafts, subsequent forging process guarantee 2 120~140mm of reduction in pass, are forged into ∮ 450mm circular blank, final forging temperature 800
~880 DEG C.
Specific embodiment 12:
A kind of processing method of railway axle Steel material, a kind of railway according to specific embodiment six
Processing method forging stock 11.5~12.5h of heating time of axles steel material, wherein 3~5h of bringing-up section time, soaking time 7~
8h, 1250~1400 DEG C of tapping temperature；2~5 75~85mm of reduction in pass in the operation of rolling；Steel billet enters slow in 30 minutes after rolling
Cold hole, 60~70h of slow cooling cheat temperature≤200 DEG C out.
Specific embodiment 13:
A kind of processing method of railway axle Steel material, a kind of railway according to specific embodiment six
Steel billet is heat-treated after going out hole in the processing method of axles steel material, 820~850 DEG C of normalizing temperature, keeps the temperature 8h, air-cooled to 190
~210 DEG C are tempered, and 520~550 DEG C of tempering temperature, 10~12h of soaking time.
Claims (10)
1. a kind of railway axle Steel material, it is characterised in that: a kind of railway axle includes following component with Steel material:
The P, of Mn ,≤0.015wt% of the C of 0.46~0.58wt%, the Si of 0.17~0.40wt%, 0.75~1.00wt%≤
Cu ,≤0.10wt% of Cr ,≤0.15wt% of the S of 0.010wt%, the Ni of 0.18~0.25wt%, 0.20~0.27wt%
Mo, the V of 0.02~0.08wt%, 0.015~0.045wt% Al ,≤15PPm O ,≤2.0PPm H, surplus Fe.
2. a kind of railway axle Steel material according to claim 1, it is characterised in that: a kind of railway axle is used
Steel material includes following component: the P of Mn, 0.011wt% of Si, 0.84wt% of C, 0.22wt% of 0.52wt%,
The V of Mo, 0.06wt% of Cu, 0.08wt% of Cr, 0.11wt% of Ni, 0.24wt% of S, 0.22wt% of 0.008wt%,
The H of O, 1.2PPm of Al, 11PPm of 0.025wt%, surplus Fe.
3. a kind of processing method of railway axle Steel material described in a kind of one of claim 1-2, it is characterised in that: described
A kind of railway axle Steel material processing method process flow are as follows: electric furnace smelting or converter smelting → LF furnace refining → RH
Or VD vacuum processing → continuous casting → enters to cheat slow cooling or hot sending → Forge Heating → dydraulic forging cogging → forging stock heating → rolling
→ slow cooling → normalizing, tempering.
4. a kind of processing method of railway axle Steel material according to claim 3, it is characterised in that: described one kind
The electric furnace smelting or mass fraction of C is 0.10~0.40wt%, P when converter smelting in the processing method of railway axle Steel material
Mass fraction≤0.008wt%, tapping temperature be 1640~1700 DEG C.
5. a kind of processing method of railway axle Steel material according to claim 3, it is characterised in that: described one kind
The refining of LF furnace is 6m/t feeding aluminum steel in the processing method of railway axle Steel material, and deoxidier is aluminum shot, carbon dust, wherein aluminum shot
0.4~0.5kg/t of dosage, carbon dust 0.3~0.4kg/t of dosage, the total 0.8~1.0kg/t of dosage of aluminum shot, carbon dust, use after mixing,
15~30min of white slag refining time.
6. a kind of processing method of railway axle Steel material according to claim 3, it is characterised in that: described one kind
RH or VD vacuum processing is vacuum degree≤67Pa, 20~40min of retention time in the processing method of railway axle Steel material, is broken
10~20min of soft blow time after sky.
7. a kind of processing method of railway axle Steel material according to claim 3, it is characterised in that: described one kind
20~35 DEG C of the continuous casting degree of superheat in the processing method of railway axle Steel material, pulling rate 0.20m/min；Enter to cheat slow cooling time slow cooling
80~90h cheats temperature≤200 DEG C out, is heat-fed 500~600 DEG C of temperature.
8. a kind of processing method of railway axle Steel material according to claim 3, it is characterised in that: described one kind
1200~1250 DEG C of Forge Heating temperature in the processing method of railway axle Steel material keep the temperature 3~5h；Hydraulic forging press uses
Jumping-up once pulls out technique, 600~650mm of outside diameter after upsetting process upsetting, and the pulling initial passage use of process≤
20mm light reduction, subsequent forging process guarantee 2 120~140mm of reduction in pass, are forged into ∮ 450mm circular blank, finish-forging
800~880 DEG C of temperature.
9. a kind of processing method of railway axle Steel material according to claim 3, it is characterised in that: described one kind
Processing method forging stock 11.5~12.5h of heating time of railway axle Steel material, wherein 3~5h of bringing-up section time, when heat preservation
Between 7~8h, 1250~1400 DEG C of tapping temperature；2~5 75~85mm of reduction in pass in the operation of rolling；Steel billet rolls 30 minutes latter
Inside enter burial pit, 60~70h of slow cooling cheats temperature≤200 DEG C out.
10. a kind of processing method of railway axle Steel material according to claim 3, it is characterised in that: described one
Steel billet is heat-treated after going out hole in the processing method of kind railway axle Steel material, 820~850 DEG C of normalizing temperature, keeps the temperature 8h, air-cooled
It is tempered to 190~210 DEG C, 520~550 DEG C of tempering temperature, 10~12h of soaking time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910763878.3A CN110358966A (en) | 2019-08-19 | 2019-08-19 | A kind of railway axle Steel material and its processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910763878.3A CN110358966A (en) | 2019-08-19 | 2019-08-19 | A kind of railway axle Steel material and its processing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110358966A true CN110358966A (en) | 2019-10-22 |
Family
ID=68225020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910763878.3A Pending CN110358966A (en) | 2019-08-19 | 2019-08-19 | A kind of railway axle Steel material and its processing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110358966A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112916788A (en) * | 2021-01-19 | 2021-06-08 | 建龙北满特殊钢有限责任公司 | Production method for forging axle for railway vehicle by adopting continuous casting billet |
| CN114507822A (en) * | 2022-04-07 | 2022-05-17 | 晋西车轴股份有限公司 | High-strength, high-toughness and high-plasticity axle carbon steel and heat treatment process of forging thereof |
| CN115572918A (en) * | 2022-10-19 | 2023-01-06 | 宝武杰富意特殊钢有限公司 | Method for manufacturing steel for rotating shaft |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101497968A (en) * | 2009-03-16 | 2009-08-05 | 江苏沙钢集团淮钢特钢有限公司 | Steel for microalloying lorry axle and technique for producing the same |
| CN104862599A (en) * | 2015-05-12 | 2015-08-26 | 攀钢集团攀枝花钢铁研究院有限公司 | Steel for railway wagon axle and manufacturing method of steel |
-
2019
- 2019-08-19 CN CN201910763878.3A patent/CN110358966A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101497968A (en) * | 2009-03-16 | 2009-08-05 | 江苏沙钢集团淮钢特钢有限公司 | Steel for microalloying lorry axle and technique for producing the same |
| CN104862599A (en) * | 2015-05-12 | 2015-08-26 | 攀钢集团攀枝花钢铁研究院有限公司 | Steel for railway wagon axle and manufacturing method of steel |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112916788A (en) * | 2021-01-19 | 2021-06-08 | 建龙北满特殊钢有限责任公司 | Production method for forging axle for railway vehicle by adopting continuous casting billet |
| CN112916788B (en) * | 2021-01-19 | 2023-01-31 | 建龙北满特殊钢有限责任公司 | Production method for forging axle for railway vehicle by adopting continuous casting billet |
| CN114507822A (en) * | 2022-04-07 | 2022-05-17 | 晋西车轴股份有限公司 | High-strength, high-toughness and high-plasticity axle carbon steel and heat treatment process of forging thereof |
| CN115572918A (en) * | 2022-10-19 | 2023-01-06 | 宝武杰富意特殊钢有限公司 | Method for manufacturing steel for rotating shaft |
| CN115572918B (en) * | 2022-10-19 | 2024-01-26 | 宝武杰富意特殊钢有限公司 | Manufacturing method of steel for rotating shaft |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109252097B (en) | Non-quenched and tempered steel of high-strength expansion-fracture connecting rod and continuous casting production process thereof | |
| CN110358966A (en) | A kind of railway axle Steel material and its processing method | |
| CN113025917A (en) | Wire rod for low-strength high-plasticity annealing-free cold forging steel and manufacturing method thereof | |
| CN105543678B (en) | High intensity non-annealed steel for fastener wire rod of a kind of boracic and preparation method thereof | |
| CN111961988B (en) | Production process and forging method of medium-carbon non-quenched and tempered steel for automobile expansion fracture connecting rod | |
| CN112899560B (en) | High-strength gear steel 23CrMnMoS and manufacturing method thereof | |
| CN103205645A (en) | Superlarge thickness hydrogen chromium molybdenum steel plate for hydrogenation equipment and manufacture method thereof | |
| CN111363976B (en) | Microalloyed steel with long service life, high strength and toughness for high-speed rail plate spring and production process thereof | |
| CN113957338A (en) | Magnesium-containing 45 steel and preparation process thereof | |
| CN110205559A (en) | A kind of tensile strength >=510MPa grades of the axle housing steel and production method of excellent surface quality | |
| CN110205542A (en) | A kind of cold roll tool steel and preparation method thereof | |
| CN115181911B (en) | Super-thick Q500qE bridge steel plate and production method thereof | |
| CN113846260A (en) | Production method of high-strength steel plate for engineering machinery | |
| CN111485167A (en) | Hot-rolled round steel for rare earth microalloyed 25MnCrNiMoA coupler yoke and production method thereof | |
| CN116065089A (en) | Annealing-free high-strength low-carbon boron-containing cold heading steel and preparation method thereof | |
| CN112853218B (en) | Steel for high-speed bullet train bogie and manufacturing method thereof | |
| WO2022222294A1 (en) | High-toughness quasi-sub-temperature quenched 09mnnidr container steel and preparation method therefor | |
| CN112981233B (en) | Low-silicon medium-carbon gear steel suitable for cold forging processing and manufacturing method thereof | |
| CN115029613B (en) | Preparation method of high-strength weather-resistant low-temperature-resistant YQ450NQR1 steel | |
| CN115125457B (en) | Steel for-50 ℃ low-temperature-resistant petrochemical heat exchanger tube plate produced by continuous casting large round billets and manufacturing method thereof | |
| CN113462985B (en) | Low-cost high-surface-hardness tool steel with excellent annealing-free bending performance | |
| CN113502430A (en) | Production method of low-alloy high-toughness F36 super-thick steel plate | |
| CN108286020B (en) | Super-thick high-strength high-density steel plate for manufacturing large structural component and manufacturing method thereof | |
| CN117004868B (en) | High-conductivity wire rod and production method thereof | |
| CN113005368B (en) | Steel plate for railway bogie resisting low-temperature impact of minus 50 ℃ and manufacturing method thereof |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191022 |