CN102953009A - Material for manufacturing alloy-steel-shaft-mounted brake disc - Google Patents
Material for manufacturing alloy-steel-shaft-mounted brake disc Download PDFInfo
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- CN102953009A CN102953009A CN201110248152XA CN201110248152A CN102953009A CN 102953009 A CN102953009 A CN 102953009A CN 201110248152X A CN201110248152X A CN 201110248152XA CN 201110248152 A CN201110248152 A CN 201110248152A CN 102953009 A CN102953009 A CN 102953009A
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- mounted brake
- molybdenum
- nickel
- copper
- manganese
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Abstract
The invention discloses a material for manufacturing an alloy-steel-shaft-mounted brake disc. The material consists of chromium, manganese, molybdenum, silicon, nickel, copper, carbon, sulfur, phosphorus, rare earth and industrial pure iron. The invention has the following technical effects that the chromium can enhance hardness and resist corrosion; the manganese can improve strength and resist wear, and plays a role of deoxidation during a melting process; the molybdenum has characteristics of wear resistance and high temperature resistance; the nickel has effects of refining organization, resisting wear and enhancing strength and toughness; the copper can enhance toughness; and the rare earth elements can refine organization and adjust performance.
Description
Affiliated technical field
The present invention relates to a kind of alloy material.
Background technology
The employed steel alloy axle-mounted brake disk of the 200km/h of present domestic operation～350km/h speed class motor-car is very special to the service requirements of material, the technical requirementss such as the comprehensive mechanical performance of steel alloy axle-mounted brake disk and friction wear performance, particularly high-temperature mechanical property and inherent tissue are very high, be mainly reflected in the aspects such as high strength and high tenacity, high-wearing feature and thermal fatigue, domestic employed steel alloy axle-mounted brake disk material all relies on external import at present.
Summary of the invention
The purpose of this invention is to provide a kind of material of making the steel alloy axle-mounted brake disk.
Technical scheme of the present invention is that a kind of material of making the steel alloy axle-mounted brake disk is comprised of chromium, manganese, molybdenum, silicon, nickel, copper, carbon, sulphur, phosphorus, alkene soil and technically pure iron; The weight percent of each component is: chromium 1.00～1.30%, manganese 1.00～1.20%, molybdenum 0.50～0.70%, silicon 0.30～0.60%, nickel 0.90～1.30%, copper 0.10～0.20%, carbon 0.20～0.27%, alkene soil 0.05～0.2%, all the other are technically pure iron, S in the technically pure iron≤0.020%, phosphorus≤0.025%.
The present invention has following technique effect, and wherein, chromium can strengthen hardness, corrosion-resistant; Manganese can improve intensity, wear-resisting, plays desoxydatoin in fusion process; Wear-resisting, resistant to elevated temperatures characteristics that molybdenum has; Nickel has thinning microstructure, wear-resisting, the effect that improves strength and toughness; Copper can strengthen toughness; Rare earth elements has the effect of thinning microstructure, adjusting function.The steel alloy axle-mounted brake disk product of manufacturing experimently by above-mentioned technology mode carries out normal temperature and high-temperature mechanical property detects the requirement that meets the specification fully through body sampling, 200km/h～1: 1 friction wear performance test of 250km/h speed relatively carrying out on year-on-year basis with Germany original-pack steel alloy axle-mounted brake disk, the gordian technique performances such as its average friction coefficient, friction curve, commonly used and emergency stopping distance, temperature rise, unit wear amount, friction surface quality are basically identical, passed through the Technical Review of car company combination weave in Chinese South car Zhuzhou Electric Locomotive Co and the Guangzhou.
Description of drawings
Fig. 1 is steel alloy axle-mounted brake disk outside drawing.
Embodiment
A kind of material of making the steel alloy axle-mounted brake disk is comprised of chromium, manganese, molybdenum, silicon, nickel, copper, carbon, sulphur, phosphorus, alkene soil and technically pure iron; The weight percent of each component is: chromium 1.2%, manganese 1.05%, molybdenum 0.67%, silicon 0.53%, nickel 1.15%, copper 0.17%, carbon 0.24%, micro-alkene soil 0.12%, all the other are technically pure iron, S in the technically pure iron≤0.020%, phosphorus≤0.025%.
In intermediate frequency furnace, add technically pure iron, when being increased to add after technically pure iron all melts in the stove more than 1300 ℃, furnace temperature calculates by weight proportion the alloy materials such as also weighted ferrochrome, ferromanganese, molybdenum-iron, ferrosilicon, treat in the stove that temperature is increased to more than 1500 ℃ and prepares to begin to come out of the stove and carry out the front 15～20min of centrifugal casting and add respectively again the material such as weighted pure nickel plate, copper sheet, rare earth, graphite block in the time and stir, about 5min time of insulation begins to come out of the stove after then continuing to be warming up to 1620 ℃.
The comprehensive mechanical performance of steel alloy axle-mounted brake disk material: the tensile strength sigma under the normal temperature
b〉=1280MPa, yield strength σ
0.2〉=1030MPa, unit elongation δ 〉=12%, relative reduction in area ψ 〉=25%, surface hardness HRc40～HRc43; Mechanical property tensile strength sigma under 600 ℃ of hot conditionss
b〉=500MPa, yield strength σ
0.2〉=435MPa, unit elongation δ 〉=25%, relative reduction in area ψ 〉=45%.
By the steel alloy axle-mounted brake disk that the material of steel alloy axle-mounted brake disk is made, as shown in Figure 1, installing on probation in South China car Zhuzhou Zhuzhou Electric Locomotive Co. Ltd., to the 3# car of Guangzhou-Shenzhen railway 200km/h " blue arrow " when EMUs carry out large repairs, by loading operation more than a year, result of use is very good, has obtained the approval of car company in the Subscriber Unit Guangzhou; Use the short run entrucking when " blue arrow " EMUs carry out in batches overhaul in 2007～2008,40 steel alloy axle-mounted brake disks of 5 motor-car meters have been installed altogether, so far range ability has surpassed 2,000,000 kilometers check requirements, uses normally, has obtained user's approval.
Claims (2)
1. a material of making the steel alloy axle-mounted brake disk is characterized in that: be comprised of chromium, manganese, molybdenum, silicon, nickel, copper, carbon, sulphur, phosphorus, alkene soil and technically pure iron; The weight percent of each component is: chromium 1.00～1.30%, manganese 1.00～1.20%, molybdenum 0.50～0.70%, silicon 0.30～0.60%, nickel 0.90～1.30%, copper 0.10～0.20%, carbon 0.20～0.27%, alkene soil 0.05～0.2%, all the other are technically pure iron.
2. a kind of material of making the steel alloy axle-mounted brake disk according to claim 1 is characterized in that: S in the technically pure iron≤0.020%, phosphorus≤0.025%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110248152XA CN102953009A (en) | 2011-08-24 | 2011-08-24 | Material for manufacturing alloy-steel-shaft-mounted brake disc |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110248152XA CN102953009A (en) | 2011-08-24 | 2011-08-24 | Material for manufacturing alloy-steel-shaft-mounted brake disc |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102953009A true CN102953009A (en) | 2013-03-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110248152XA Pending CN102953009A (en) | 2011-08-24 | 2011-08-24 | Material for manufacturing alloy-steel-shaft-mounted brake disc |
Country Status (1)
| Country | Link |
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| CN (1) | CN102953009A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107671228A (en) * | 2016-08-02 | 2018-02-09 | 中国科学院金属研究所 | A kind of casting technique of high-speed railway passenger rare earth alloy brake disc castings |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101519754A (en) * | 2008-11-28 | 2009-09-02 | 北京纵横机电技术开发公司 | Alloy steel for braking discs |
| CN102080177A (en) * | 2011-01-17 | 2011-06-01 | 重庆大学 | Vanadium-titanium vermicular graphite cast iron |
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2011
- 2011-08-24 CN CN201110248152XA patent/CN102953009A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101519754A (en) * | 2008-11-28 | 2009-09-02 | 北京纵横机电技术开发公司 | Alloy steel for braking discs |
| CN102080177A (en) * | 2011-01-17 | 2011-06-01 | 重庆大学 | Vanadium-titanium vermicular graphite cast iron |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107671228A (en) * | 2016-08-02 | 2018-02-09 | 中国科学院金属研究所 | A kind of casting technique of high-speed railway passenger rare earth alloy brake disc castings |
| CN107671228B (en) * | 2016-08-02 | 2019-06-07 | 中国科学院金属研究所 | A kind of casting technique of high-speed railway passenger rare earth alloy brake disc castings |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130306 |