CN104342594A - Alloy for preparing iron cushion plate for high-iron buckle - Google Patents
Alloy for preparing iron cushion plate for high-iron buckle Download PDFInfo
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- CN104342594A CN104342594A CN201410718612.4A CN201410718612A CN104342594A CN 104342594 A CN104342594 A CN 104342594A CN 201410718612 A CN201410718612 A CN 201410718612A CN 104342594 A CN104342594 A CN 104342594A
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- high ferro
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Abstract
The invention discloses an alloy for preparing an iron cushion plate for a high-iron buckle. The alloy comprises the following chemical components in percentage by mass: 2.4-3.6 percent of C, 1.7-2.8 percent of Si, 1.2-2.0 percent of Cr, 0.8-1.4 percent of Nb, 0.4-1.0 percent of Mo, smaller than or equal to 0.4 percent of Mn, smaller than or equal to 0.08 percent of P+S, 0.03-0.06 percent of Mg, 0.02-0.04 percent of Re and the balance of Fe. Based on QT450-10, the tensile strength, the yield strength, the elongation and the hardness of the iron cushion plate are all obviously improved and are dramatically superior to those of the existing products by slightly changing the element formula.
Description
Technical field
The invention belongs to inorganic metallic materials technical field, be specifically related to a kind of alloy for the preparation of high ferro fastener iron chair and application thereof.
Background technology
Iron chair in fastener system is important component part, only a quantity during high speed railway track is built, and the iron chair quantity of every kilometer of track needs has just exceeded 3000, and its performance quality directly has influence on track and even high ferro overall operation performance.At present, the material of conventional iron chair (such as WJ-7 type, WJ-8 type) is based on QT450-10, and produce main employing DISA extrusion moduling line and conventional casting, the product of preparation can meet present stage application requiring.But high ferro technology is developing always, the requirement of people to the aspect such as speed, security, comfortableness, operation cost of high ferro is more and more higher.The lifting of iron chair performance is undoubtedly an important step in high ferro technical development.
Summary of the invention
The object of the present invention is to provide a kind of alloy for the preparation of high ferro fastener iron chair.On the basis of QT450-10, by changing element formula a little, gained iron chair has obvious lifting in tensile strength, yield strength, elongation and hardness, is significantly better than currently available products.
For achieving the above object, the present invention adopts following technical scheme.
A kind of alloy for the preparation of high ferro fastener iron chair, in mass percent (%), its chemical composition is: C 2.4-3.6, Si 1.7-2.8, Cr 1.2-2.0, Nb 0.8-1.4, Mo 0.4-1.0, Mn≤0.4, P+S≤0.08, Mg 0.03-0.06, Re 0.02-0.04, Fe surplus.
Preferably, the chemical composition of alloy of the present invention is: C 2.8-3.2, Si 2.0-2.5, Cr1.3-1.6, Nb 0.8-1.0, Mo 0.5-0.8, Mn≤0.4, P+S≤0.06, Mg 0.03-0.06, Re 0.02-0.04, Fe surplus.
In the present invention, the preparation of alloy material belongs to ordinary skill to those skilled in the art, generally includes raw materials melt to form the step of alloy liquid.In process for preparation, the elementary composition of the equipment Inspection alloys such as such as direct reading spectroscopic analyser can be adopted.
Alloy of the present invention can be used for preparation high ferro fastener iron chair, is specially adapted to the manufacture of iron chair in WJ-7 and WJ-8 type fastener.Therefore, the present invention also aims to provide the application of above-mentioned alloy in preparation high ferro fastener iron chair and the high ferro fastener iron chair by this reasonable offer.
Utilize the technique of reasonable offer high ferro fastener iron chair of the present invention not have particular requirement, can adopt the conventional casting of this area, this easily knows to those skilled in the art.Such as, preparation technology can comprise: melting raw material, alloyage liquid; In sand mold, pour into a mould alloy liquid, to be cooledly solidify rear formation foundry goods; Aftertreatment, obtains finished product.For enhancing productivity, these class methods can be aided with DISA extrusion moduling line and carry out moulding and casting, as DISA2013LP automatization mould on end line.The object of aftertreatment is dimensional precision in order to ensure iron chair and subsequent applications requirement, and this is the routine techniques means easily known to those skilled in the art.
Compared to existing iron chair product such as QT450-10 iron chair, the present invention is by optimizing compositing formula, can greatly improve the quality of products, the mechanical properties such as its tensile strength, yield strength, elongation and hardness significantly promote, and long product lifecycle, thus the requirement of higher orbital motion performance can be met.
Embodiment
Below in conjunction with specific embodiment to be described in further detail the present invention, but limiting the scope of the invention should not be understood as.
preparation embodiment
To prepare WJ-8 type fastener iron chair.In the practice of the invention, use intermediate frequency GW3T-2500KW electrosmelting alloy raw material, it is elementary composition that Italian GNR direct reading spectroscopic analyser detects alloy solution, and adopt Denmark import DISA2013LP automatization mould on end line.
Concrete preparation flow comprises: with reference to compositing formula alloyage liquid shown in table 1, be then poured into sand mold when alloy liquid temperature is 1450-1460 DEG C, to be cooledly solidifies rear formation foundry goods, with after to obtain the iron chair of specified dimension through aftertreatment.
Table 1
Note: surplus is iron.
performance characterization
With reference to GB/T 1348-2009, Performance Detection is carried out to mechanical properties such as the tensile strength of the iron chair that embodiment 1-4 prepares, yield strength, elongation and hardness.Test result is as shown in table 2.
Table 2
Existing WJ-8 type fastener iron chair is made primarily of QT450-10, and be limited to the material of QT450-10, the Rm of these iron chairs remains on about 500Mpa substantially, Rp0.2 slightly larger than 310Mpa, A and HBW then respectively between 10-15 and 160-210.As can be seen from Table 2, the present invention, by a little change of formula, just can make iron chair show very excellent performance in tensile strength, yield strength, elongation and hardness etc., obviously be better than existing QT450-10 product.
Claims (5)
1. the alloy for the preparation of high ferro fastener iron chair, in mass percent (%), its chemical composition is: C 2.4-3.6, Si 1.7-2.8, Cr 1.2-2.0, Nb 0.8-1.4, Mo 0.4-1.0, Mn≤0.4, P+S≤0.08, Mg 0.03-0.06, Re 0.02-0.04, Fe surplus.
2. the alloy for the preparation of high ferro fastener iron chair according to claim 1, it is characterized in that, chemical composition is: C 2.8-3.2, Si 2.0-2.5, Cr 1.3-1.6, Nb 0.8-1.0, Mo 0.5-0.8, Mn≤0.4, P+S≤0.06, Mg 0.03-0.06, Re 0.02-0.04, Fe surplus.
3. the application of alloy in preparation high ferro fastener iron chair for the preparation of high ferro fastener iron chair described in claim 1 or 2.
4. the application described in claim 1-3, is characterized in that: described fastener is WJ-7 or WJ-8 type fastener.
5. a high ferro fastener iron chair is formed by the reasonable offer described in claim 1 or 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410718612.4A CN104342594A (en) | 2014-12-02 | 2014-12-02 | Alloy for preparing iron cushion plate for high-iron buckle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410718612.4A CN104342594A (en) | 2014-12-02 | 2014-12-02 | Alloy for preparing iron cushion plate for high-iron buckle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104342594A true CN104342594A (en) | 2015-02-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410718612.4A Pending CN104342594A (en) | 2014-12-02 | 2014-12-02 | Alloy for preparing iron cushion plate for high-iron buckle |
Country Status (1)
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| CN (1) | CN104342594A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107815584A (en) * | 2017-10-24 | 2018-03-20 | 建湖金洋科技有限公司 | A kind of iron chair for high ferro fastener and preparation method thereof |
| CN109023046A (en) * | 2018-08-03 | 2018-12-18 | 建湖金洋科技有限公司 | A kind of iron chair and its manufacturing process for high-speed rail fastener |
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| JPS6036755A (en) * | 1983-08-08 | 1985-02-25 | Kubota Ltd | Composite cylinder liner |
| JPS60247036A (en) * | 1984-05-22 | 1985-12-06 | Mitsui Eng & Shipbuild Co Ltd | Cv-cast iron cylinder liner |
| RU2304182C1 (en) * | 2006-07-11 | 2007-08-10 | Юлия Алексеевна Щепочкина | Cast iron |
| JP2008156688A (en) * | 2006-12-22 | 2008-07-10 | Jfe Steel Kk | High strength spheroidal graphite cast iron |
| CN101300368A (en) * | 2005-09-15 | 2008-11-05 | 格瑞得铸造公司 | High silicon niobium casting alloy and method of manufacturing the same |
| CN102268588A (en) * | 2011-06-22 | 2011-12-07 | 山东省四方技术开发有限公司 | Steel pipe reducing mill or sizing mill nodular cast iron roller and preparation method thereof |
| CN102851572A (en) * | 2012-08-31 | 2013-01-02 | 阴勇 | Nodular cast iron for axle housing |
| CN103320681A (en) * | 2013-07-11 | 2013-09-25 | 周世康 | Austempered ductile iron and quenching technology thereof |
| CN103517997A (en) * | 2011-04-15 | 2014-01-15 | 西门子公司 | Cast iron containing niobium and component |
| CN103710614A (en) * | 2012-10-01 | 2014-04-09 | 西门子公司 | Cast iron containing niobium and component |
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2014
- 2014-12-02 CN CN201410718612.4A patent/CN104342594A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6036755A (en) * | 1983-08-08 | 1985-02-25 | Kubota Ltd | Composite cylinder liner |
| JPS60247036A (en) * | 1984-05-22 | 1985-12-06 | Mitsui Eng & Shipbuild Co Ltd | Cv-cast iron cylinder liner |
| CN101300368A (en) * | 2005-09-15 | 2008-11-05 | 格瑞得铸造公司 | High silicon niobium casting alloy and method of manufacturing the same |
| RU2304182C1 (en) * | 2006-07-11 | 2007-08-10 | Юлия Алексеевна Щепочкина | Cast iron |
| JP2008156688A (en) * | 2006-12-22 | 2008-07-10 | Jfe Steel Kk | High strength spheroidal graphite cast iron |
| CN103517997A (en) * | 2011-04-15 | 2014-01-15 | 西门子公司 | Cast iron containing niobium and component |
| CN102268588A (en) * | 2011-06-22 | 2011-12-07 | 山东省四方技术开发有限公司 | Steel pipe reducing mill or sizing mill nodular cast iron roller and preparation method thereof |
| CN102851572A (en) * | 2012-08-31 | 2013-01-02 | 阴勇 | Nodular cast iron for axle housing |
| CN103710614A (en) * | 2012-10-01 | 2014-04-09 | 西门子公司 | Cast iron containing niobium and component |
| CN103320681A (en) * | 2013-07-11 | 2013-09-25 | 周世康 | Austempered ductile iron and quenching technology thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107815584A (en) * | 2017-10-24 | 2018-03-20 | 建湖金洋科技有限公司 | A kind of iron chair for high ferro fastener and preparation method thereof |
| CN109023046A (en) * | 2018-08-03 | 2018-12-18 | 建湖金洋科技有限公司 | A kind of iron chair and its manufacturing process for high-speed rail fastener |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Application publication date: 20150211 |