CN103789702A - Preparation method of wheel of high-speed train - Google Patents
Preparation method of wheel of high-speed train Download PDFInfo
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- CN103789702A CN103789702A CN201210435882.5A CN201210435882A CN103789702A CN 103789702 A CN103789702 A CN 103789702A CN 201210435882 A CN201210435882 A CN 201210435882A CN 103789702 A CN103789702 A CN 103789702A
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Abstract
The invention discloses a preparation method of a wheel of a high-speed train. The wheel comprises the following chemical components in percentage by weight: 0.46%-0.50% of C, 0.4%-0.6% of Si, 2.1%-2.3% of Mn, less than or equal to 0.015 of P, less than or equal to 0.010% of S, 0.004%-0.006% of B, 2.4%-2.6% of Ni, 1.2%-1.6% of Cr and the balance of iron and inevitable impurities. The preparation method comprises the following steps of: (1) smelting: regulating the chemical components to meet the condition, and then pouring into a cast ingot; (2) forging: heating the cast ingot to 1230-1250 DEG C, keeping temperature for 1-2 hours, and then carrying out mould forging, wherein the final forging temperature is 930-950 DEG C; (3) heat treatment: carrying out oil quenching at the quenching heating temperature of 900-920 DEG C, then tempering at the tempering heating temperature of 530-550 DEG C, and keeping the temperature for the time of 2-3 hours; (4) machining.
Description
Technical field
The present invention relates to technical field of ferrous metallurgy, relate in particular to a kind of preparation method of high speed train wheel.
Background technology
Standard evolution process from national railway Passenger Vehicle with wheel, within 1988, issue and implement national standard " railway with roll over steel solid wheel " (GB8601-88), be applicable to before China railways speed-raising, the railway passenger train wheel of travelling speed≤80km/h; 1996 " railway advanced passenger train is rolled over steel solid wheel technical qualification " of promulgating (TB/T2708-1996) have substituted GB8601-88, after being mainly applicable to China railways speed-raising, and the railway passenger train wheel of travelling speed≤160km/h.In these two standards, the requirement of the composition of conventional CL60 Wheel Steel is consistent, but TB/T2708-1996 is requiring to guarantee that wheel rim plasticity, disc normal temperature impelling strength require under constant prerequisite, section hardness value is brought up to (265～320) HB by >=255HB; Be about to revise in the new TB promulgating and requiring to guarantee that the strong plasticity of wheel rim, section hardness and disc normal temperature impelling strength require to have increased again under constant prerequisite the requirement of wheel rim impelling strength under-20 ℃ of low temperature, and be equal to the requirement of carbonaceous amount percentage composition≤0.60% in European EN13262-2004, visible, the hardness of the conventional CL60 steel wheel of China, impelling strength particularly low-temperature impact toughness have all had larger lifting.
And room temperature texture's state of conventional CL60 steel wheel is ferrite-perlite, the distinguishing feature of this steel is: raising strong, hardness can cause the decline of impelling strength, thereby reduce inside wheel resistance to crack extension ability, when wheel is subject to used time of doing of complicated wheel and rail interaction force under arms in process, can have a negative impact to usage safety performance.
Therefore, how keeping, under the prerequisite that conventional CL60 steel wheel is strong, firmness level is constant, meeting the requirement of standards change, effectively improving the impelling strength index of wheel, is a major issue being badly in need of at present solution.
Publication number is that the chemical composition that the Chinese patent application of CN101818236A discloses a kind of its steel of method for manufacturing high carbon steel wheel is C:0.60%～0.63%; Si:0.25%～0.35%; Mn:0.75%～0.85%; P≤0.025%; S≤0.010%; All the other: trace.It still belongs to carbon steel, although the cost of material is low, because carbon content is higher, causes still having place not fully up to expectations in its course of processing and use, therefore, is necessary further to improve.
Summary of the invention
The object of the invention is to propose a kind of preparation method of high speed train wheel, compared with prior art, this wheel-use steel material has reduced the content of carbon, and adds appropriate alloying element, makes the excellent combination property of this wheel.
For reaching this object, the present invention by the following technical solutions:
A preparation method for high speed train wheel, the chemical composition of this wheel is made up of following component by weight percentage: C:0.46-0.50; Si:0.4-0.6; Mn:2.1-2.3; P≤0.015; S≤0.010; B:0.004-0.006; Ni:2.4-2.6, Cr 1.2-1.6, surplus is iron and inevitable impurity, described preparation method comprises the steps:
1) smelt: adjust after chemical composition meets above-mentioned condition and pour into ingot casting;
2) forge: ingot casting is heated to 1230-1250 ℃, and insulation 1-2 hour, then carries out die forging, and final forging temperature is 930-950 ℃;
3) thermal treatment: quenching temperature is 900-920 ℃, carries out oil quenching, then carries out tempering, and tempering Heating temperature is 530-550 ℃, and soaking time is 2-3 hour.
4) be machined to finished product.
Compared with prior art, the present invention has following beneficial effect:
By the adjustment of chemical composition, reduce carbon content, B, Ni and Cr alloying element are added, and according to the service requirements of high speed train wheel, determine the content of these three kinds of elements, make the mechanical property such as intensity, toughness and hardness and wear resistance of the wheel of preparing than traditional CL60 steel wheel excellence, also than other carbon steel product excellence of prior art.Wheel of the present invention has suitable bainite structure after thermal treatment, and therefore performance is more excellent.
Embodiment
Embodiment mono-
A preparation method for high speed train wheel, the chemical composition of this wheel is made up of following component by weight percentage: C:0.46; Si:0.6; Mn:2.1; P≤0.015; S≤0.010; B:0.006; Ni:2.4, Cr 1.6, surplus is iron and inevitable impurity, described preparation method comprises the steps:
1) smelt: adjust after chemical composition meets above-mentioned condition and pour into ingot casting;
2) forge: ingot casting is heated to 1230 ℃, is incubated 2 hours, then carry out die forging, final forging temperature is 930 ℃;
3) thermal treatment: quenching temperature is 900 ℃, carries out oil quenching, then carries out tempering, and tempering Heating temperature is 550 ℃, and soaking time is 2 hours.
4) be machined to finished product.
Embodiment bis-
A preparation method for high speed train wheel, the chemical composition of this wheel is made up of following component by weight percentage: C:0.50; Si:0.4; Mn:2.3; P≤0.015; S≤0.010; B:0.004; Ni:2.6, Cr 1.2, surplus is iron and inevitable impurity, described preparation method comprises the steps:
1) smelt: adjust after chemical composition meets above-mentioned condition and pour into ingot casting;
2) forge: ingot casting is heated to 1250 ℃, is incubated 1 hour, then carry out die forging, final forging temperature is 950 ℃;
3) thermal treatment: quenching temperature is 920 ℃, carries out oil quenching, then carries out tempering, and tempering Heating temperature is 530 ℃, and soaking time is 3 hours.
4) be machined to finished product.
Embodiment tri-
A preparation method for high speed train wheel, the chemical composition of this wheel is made up of following component by weight percentage: C:0.48; Si:0.5; Mn:2.2; P≤0.015; S≤0.010; B:0.005; Ni:2.5, Cr 1.4, surplus is iron and inevitable impurity, described preparation method comprises the steps:
1) smelt: adjust after chemical composition meets above-mentioned condition and pour into ingot casting;
2) forge: ingot casting is heated to 1240 ℃, is incubated 1.5 hours, then carry out die forging, final forging temperature is 940 ℃;
3) thermal treatment: quenching temperature is 910 ℃, carries out oil quenching, then carries out tempering, and tempering Heating temperature is 540 ℃, and soaking time is 2.5 hours.
4) be machined to finished product.
Claims (1)
1. a preparation method for high speed train wheel, is characterized in that, the chemical composition of this wheel is made up of following component by weight percentage: C:0.46-0.50; Si:0.4-0.6; Mn:2.1-2.3; P≤0.015; S≤0.010; B:0.004-0.006; Ni:2.4-2.6, Cr 1.2-1.6, surplus is iron and inevitable impurity, described preparation method comprises the steps:
1) smelt: adjust after chemical composition meets above-mentioned condition and pour into ingot casting;
2) forge: ingot casting is heated to 1230-1250 ℃, and insulation 1-2 hour, then carries out die forging, and final forging temperature is 930-950 ℃;
3) thermal treatment: quenching temperature is 900-920 ℃, carries out oil quenching, then carries out tempering, and tempering Heating temperature is 530-550 ℃, and soaking time is 2-3 hour.
4) be machined to finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210435882.5A CN103789702A (en) | 2012-11-03 | 2012-11-03 | Preparation method of wheel of high-speed train |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210435882.5A CN103789702A (en) | 2012-11-03 | 2012-11-03 | Preparation method of wheel of high-speed train |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103789702A true CN103789702A (en) | 2014-05-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210435882.5A Pending CN103789702A (en) | 2012-11-03 | 2012-11-03 | Preparation method of wheel of high-speed train |
Country Status (1)
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| CN (1) | CN103789702A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106077505A (en) * | 2016-07-14 | 2016-11-09 | 南京东电检测科技有限公司 | A kind of casting forging compound plasticity shaping technique of brake disc |
| CN106755788A (en) * | 2017-01-13 | 2017-05-31 | 大楚神驰车轮股份有限公司 | A kind of wheel quenching-and-tempering process |
| CN110499416A (en) * | 2019-08-29 | 2019-11-26 | 安徽港泰机械制造集团有限公司 | A kind of heat treatment process of wheel |
-
2012
- 2012-11-03 CN CN201210435882.5A patent/CN103789702A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106077505A (en) * | 2016-07-14 | 2016-11-09 | 南京东电检测科技有限公司 | A kind of casting forging compound plasticity shaping technique of brake disc |
| CN106755788A (en) * | 2017-01-13 | 2017-05-31 | 大楚神驰车轮股份有限公司 | A kind of wheel quenching-and-tempering process |
| CN110499416A (en) * | 2019-08-29 | 2019-11-26 | 安徽港泰机械制造集团有限公司 | A kind of heat treatment process of wheel |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140514 |