CN102115843A - Vermicular graphite cast iron for producing brake drum of high-speed and heavy-load automobile - Google Patents
Vermicular graphite cast iron for producing brake drum of high-speed and heavy-load automobile Download PDFInfo
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- CN102115843A CN102115843A CN2010100033026A CN201010003302A CN102115843A CN 102115843 A CN102115843 A CN 102115843A CN 2010100033026 A CN2010100033026 A CN 2010100033026A CN 201010003302 A CN201010003302 A CN 201010003302A CN 102115843 A CN102115843 A CN 102115843A
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Abstract
The invention discloses alloyed vermicular graphite cast iron produced by alloying the ordinary vermicular graphite cast iron. The cast iron comprises an alloy of two or more of elements such as Cu, Cr, Mo, Ni, Sn, Sb, B, Ti, Al, V and the like. The vermicular graphite cast iron comprises the following chemical ingredients in percentage by weight: 3.00-3.80 percent of C, 2.00-2.80 percent of Si, 0.45-0.95 percent of Mn, less than 0.06 percent of P, less than or equal to 0.02 percent of S, and 0.02-0.60 percent of alloy ingredient. The technical indexes of the vermicular graphite cast iron are that: VG is more than or equal to 80 percent, Rm is more than or equal to 380 MPa, hardness is between 180 HBW and 258 HBW, cast pearlite is more than or equal to 60 percent, and elongation rate is between 1 percent and 2 percent. The vermicular graphite cast iron has the advantages of high intensity, high heat conductivity, high wear resistance, high thermal fatigue resistance, small deformation, simple casting process and easiness in mechanical production. The service life of a produced brake drum for a high-speed and heavy-load automobile is remarkably prolonged, and safety is ensured.
Description
Technical field
The present invention relates to a kind of production method of vermicular cast iron.Be suitable for the production of high-speed overload automobile brake drum.
Background technology
Existing automobile brake drum all adopts grey cast iron or the production of low-alloy grey cast iron, but only be fit to general in, low speed and in, the underloading automobile brake uses, and can't satisfy high-speed overload automobile requirements on transport far away.Some enterprises once attempted to adopt nodular cast iron to produce automobile brake drum, because spheroidal graphite cast iron exists high elastic coefficient and elongation, the defective that thermal conductivity is low, frictional coefficient is little, the automobile brake drum of being produced in use is out of shape seriously, brake lining cracking place inwardly protruding is seriously torn brake facing, and poor stop is used for vehicle body deadweight and weight-carrying capacity and surpasses 80 tons heavy-load automobile, only have 8～10 days work-ing life, and the automobile brake drum of producing with common HT200 is identical work-ing life.
The high heat conductance that the existing grey cast iron of vermicular cast iron is had, big frictional coefficient, the high strength that is had that also spheroidal graphite cast iron arranged, high thermal fatigue resistance and high-wearing feature, elongation and Young's modulus fall between, and are the quality matetrials of making the high-speed overload automobile brake drum.At present, American-European countries utilizes vermicular cast iron to produce diesel engine cylinder block, cylinder cap in a large number, is not used in and produces the high-speed overload automobile brake drum; The domestic vermicular cast iron that also only utilizes is produced diesel engine cylinder block, cylinder cap, automobile exhaust pipe, ingot mold, glass mold, coke oven door, coke oven guard plate and rapid brake flange.Produce the high-speed overload automobile brake drum with alloy vermicular cast iron, still blank on the market.
Summary of the invention
The production method that the purpose of this invention is to provide a kind of vermicular cast iron, by common vermicular cast iron is carried out Alloying Treatment, have intensity height, thermal conductivity height, wear resistance and thermal fatigue resistance are good, be out of shape for a short time, casting technique is simple and be easy to outstanding advantage such as machinery production.The high-speed overload automobile brake drum wear resistance of producing with alloy vermicular cast iron is good, does not chap behind the life-time service, not cracked, not disk stripping.Work-ing life is more than 60 days, it is regular gray iron and spheroidal graphite cast iron 7.5 times, low-alloy cast iron and rare earth alloy cast iron 4 times, 2 times of common vermicular cast iron, since safe in utilization, the serious potential safety hazard that existing brake drum easily causes car crash solved.
The present invention is achieved in that the high duty pig iron of selecting low P, low S for use, adds a certain proportion of steel scrap, foundry return preparation melting high-carbon, low silicon base iron; Take off most slag behind the molten iron is melting; The alloy of two or more in the elements such as adding proper C u, Cr, Mo, Ni, Sn, Sb, B, Ti, Al, V; The wriggling of coming out of the stove when molten iron reaches certain temperature processing and inoculation; Pour into a mould finish postcooling, cleaning, and make thermal treatment and machinery production.
The present invention wriggling, breeds into alloy vermicular cast iron owing to add alloy in the cast iron, and chemical ingredients is except C3.00～3.80, Si2.00～2.80, and Mn0.45～0.95, P＜0.06,0.02～0.60 alloying constituent is also contained in S≤0.02; Technology refers to reach VG 〉=80%, Rm 〉=380MPa, hardness 180～258HBW, as-cast pearlitic 〉=60%, elongation 1～2%.Splendid in intensity, thermal conductivity, wear resistance, the performance of fatigue resistance aspects, significantly improve the work-ing life and the safety control of automobile brake drum.
Embodiment
The invention will be further described below in conjunction with embodiment.
The pig iron is selected the high-quality 12# or the 14# pig iron of low P, low S for use; Steel scrap adds 20%; Take off add Cu, Cr, Mo in the molten iron behind the most slag, the Ni alloy accounts for 0.30%; Tapping temperature is 1480～1550 ℃; After wriggling processing and the inoculation, pour into a mould in 15 minutes and finish.
Technical process of the present invention is provided by following examples.
Take off most slag → adding alloy → wriggling processing and inoculation → cast after the pig iron → adding foundry return → adding steel scrap → fusing.
Above-mentioned finished product is through cooling, cleaning, thermal treatment and make machinery production, check promptly becomes qualified alloy vermicular cast iron.
Adopt the alloy vermicular cast iron of aforementioned production method production promptly to can be used for producing the high-speed overload automobile brake drum.
Claims (4)
1. produce the production method of the vermicular cast iron of high-speed overload automobile brake drum,, it is characterized in that vermicular cast iron is carried out Alloying Treatment by to processing of wriggling of cast iron and inoculation.
2. production method according to claim 1 is characterized in that alloy can select two or more in the elements such as Cu, Cr, Mo, Ni, Sn, Sb, B, Ti, Al, V for use.
3. production method according to claim 1 and 2 is characterized in that chemical ingredients except C3.00～3.80, Si2.00～2.80, and Mn0.45～0.95, P＜0.06,0.02～0.60 alloying constituent is also contained in S≤0.02.
4. production method according to claim 1 and 2 is characterized in that technical indicator reaches VG 〉=80%, Rm 〉=380MPa, hardness 180～258HBW, as-cast pearlitic 〉=60%, elongation 1～2%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010100033026A CN102115843A (en) | 2010-01-05 | 2010-01-05 | Vermicular graphite cast iron for producing brake drum of high-speed and heavy-load automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010100033026A CN102115843A (en) | 2010-01-05 | 2010-01-05 | Vermicular graphite cast iron for producing brake drum of high-speed and heavy-load automobile |
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| Publication Number | Publication Date |
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| CN102115843A true CN102115843A (en) | 2011-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010100033026A Pending CN102115843A (en) | 2010-01-05 | 2010-01-05 | Vermicular graphite cast iron for producing brake drum of high-speed and heavy-load automobile |
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| CN (1) | CN102115843A (en) |
Cited By (34)
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| CN102251168A (en) * | 2011-07-07 | 2011-11-23 | 无锡小天鹅精密铸造有限公司 | Smelting composition for flange |
| CN102251169A (en) * | 2011-07-07 | 2011-11-23 | 无锡小天鹅精密铸造有限公司 | Smelting ingredients of support |
| CN102268591A (en) * | 2011-07-07 | 2011-12-07 | 无锡小天鹅精密铸造有限公司 | Melting ingredient for piston |
| CN102424930A (en) * | 2011-12-01 | 2012-04-25 | 宜宾常达机械有限公司 | Manufacturing technology for chilled cast iron part |
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| CN103255335A (en) * | 2013-05-11 | 2013-08-21 | 罗云 | Alloy vermicular cast irons for producing high-speed and heavy-duty automobile brake drum |
| WO2014015703A1 (en) * | 2012-07-27 | 2014-01-30 | 宁夏共享集团有限责任公司 | Casting alloying method of brake disc for high-speed railway engine |
| CN103757539A (en) * | 2013-12-31 | 2014-04-30 | 芜湖诚拓汽车零部件有限公司 | Vanadium-titanium alloy automobile brake disc |
| CN103834853A (en) * | 2014-03-19 | 2014-06-04 | 中国重汽集团济南动力有限公司 | Casting material of brake disc of disc brake and processing technique of brake disc |
| CN103866177A (en) * | 2012-12-12 | 2014-06-18 | 金建平 | High-strength-and-toughness cast iron heavy-duty automobile brake drum and making technology thereof |
| CN103993216A (en) * | 2014-05-26 | 2014-08-20 | 广东美芝精密制造有限公司 | Plunger for compressor pump body, production method thereof as well as compressor and refrigeration equipment |
| CN104004960A (en) * | 2014-06-12 | 2014-08-27 | 四川省富邦钒钛制动鼓有限公司 | Low-chromium-vanadium-titanium cast iron grinding ball and preparing method thereof |
| CN104451364A (en) * | 2014-12-25 | 2015-03-25 | 常熟市瑞峰模具有限公司 | Alloy cast iron mold for food bottle production |
| CN104561751A (en) * | 2014-12-10 | 2015-04-29 | 马鞍山市益华液压机具有限公司 | High-wear-resistance material for hydraulic wrench pistons and preparation method thereof |
| CN105039837A (en) * | 2015-07-13 | 2015-11-11 | 苏州东海玻璃模具有限公司 | Micro-alloying high-oxidation-resistance gray iron and preparation method thereof |
| CN105543640A (en) * | 2015-12-29 | 2016-05-04 | 丹寨县真山机电有限公司 | Anti-wear cast iron used for automobile brake disc |
| CN106868397A (en) * | 2017-04-01 | 2017-06-20 | 江西久旺汽车配件制造有限公司 | A kind of high-toughness heat-resistant vermicular cast iron automobile brake drum and preparation method thereof |
| CN106929750A (en) * | 2017-05-13 | 2017-07-07 | 山东宏马工程机械有限公司 | Compacted iron brake drum and preparation method thereof |
| CN107419162A (en) * | 2017-06-19 | 2017-12-01 | 常熟市兄弟玻璃模具有限公司 | A kind of manufacture method of cast-iron alloy glass mold material and glass mold |
| CN108624807A (en) * | 2017-08-29 | 2018-10-09 | 西安工业大学 | A kind of high nodulizing rate vermicular cast iron of the high either pearlite occurred of as cast condition and preparation method thereof |
| CN109023025A (en) * | 2018-08-20 | 2018-12-18 | 江苏力源金河铸造有限公司 | A kind of preparation method with high-elongation vermicular cast iron |
| CN110894582A (en) * | 2019-12-10 | 2020-03-20 | 西安工业大学 | High-strength and high-heat-conductivity vermicular graphite cast iron and preparation method thereof |
| CN111139397A (en) * | 2019-12-23 | 2020-05-12 | 山东时风（集团）有限责任公司 | Rapid preparation method of vermicular cast iron truck brake disc |
| CN111621693A (en) * | 2020-07-17 | 2020-09-04 | 四川赢信汇通实业有限公司 | Molybdenum-titanium alloy brake drum and preparation method thereof |
| CN114737108A (en) * | 2022-04-29 | 2022-07-12 | 德兴市立达机械制造有限公司 | Formula of gold bearing and casting process thereof |
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| US20220251691A1 (en) * | 2019-07-24 | 2022-08-11 | Brembo S.P.A. | Cast iron, in particular for components of disc brakes |
| CN115074613A (en) * | 2022-05-17 | 2022-09-20 | 烟台大学 | High-thermal-conductivity high-thermal-fatigue-resistance vermicular graphite cast iron and preparation method thereof |
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2010
- 2010-01-05 CN CN2010100033026A patent/CN102115843A/en active Pending
Cited By (47)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102251169B (en) * | 2011-07-07 | 2013-01-02 | 无锡小天鹅精密铸造有限公司 | Smelting ingredients of support |
| CN102251169A (en) * | 2011-07-07 | 2011-11-23 | 无锡小天鹅精密铸造有限公司 | Smelting ingredients of support |
| CN102268591A (en) * | 2011-07-07 | 2011-12-07 | 无锡小天鹅精密铸造有限公司 | Melting ingredient for piston |
| CN102251168A (en) * | 2011-07-07 | 2011-11-23 | 无锡小天鹅精密铸造有限公司 | Smelting composition for flange |
| CN102268591B (en) * | 2011-07-07 | 2013-03-13 | 无锡小天鹅精密铸造有限公司 | Melting ingredient for piston |
| CN102954130B (en) * | 2011-08-16 | 2016-08-03 | 现代自动车株式会社 | Utilize the brake disc of different materials |
| CN102954130A (en) * | 2011-08-16 | 2013-03-06 | 现代自动车株式会社 | Brake disc using different materials |
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| CN105543640A (en) * | 2015-12-29 | 2016-05-04 | 丹寨县真山机电有限公司 | Anti-wear cast iron used for automobile brake disc |
| CN106868397A (en) * | 2017-04-01 | 2017-06-20 | 江西久旺汽车配件制造有限公司 | A kind of high-toughness heat-resistant vermicular cast iron automobile brake drum and preparation method thereof |
| CN106929750A (en) * | 2017-05-13 | 2017-07-07 | 山东宏马工程机械有限公司 | Compacted iron brake drum and preparation method thereof |
| CN106929750B (en) * | 2017-05-13 | 2018-12-28 | 山东宏马工程机械有限公司 | Compacted iron brake drum and preparation method thereof |
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| CN108624807B (en) * | 2017-08-29 | 2019-12-17 | 西安工业大学 | Cast high-pearlite high-creep-rate vermicular graphite cast iron and preparation method thereof |
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| US20220251691A1 (en) * | 2019-07-24 | 2022-08-11 | Brembo S.P.A. | Cast iron, in particular for components of disc brakes |
| CN110894582A (en) * | 2019-12-10 | 2020-03-20 | 西安工业大学 | High-strength and high-heat-conductivity vermicular graphite cast iron and preparation method thereof |
| CN110894582B (en) * | 2019-12-10 | 2021-01-05 | 西安工业大学 | High-strength and high-heat-conductivity vermicular graphite cast iron and preparation method thereof |
| CN111139397A (en) * | 2019-12-23 | 2020-05-12 | 山东时风（集团）有限责任公司 | Rapid preparation method of vermicular cast iron truck brake disc |
| CN111621693A (en) * | 2020-07-17 | 2020-09-04 | 四川赢信汇通实业有限公司 | Molybdenum-titanium alloy brake drum and preparation method thereof |
| CN114836680A (en) * | 2021-02-01 | 2022-08-02 | 上海海立电器有限公司 | Casting material, compressor cylinder and casting method thereof, and rotor type compressor |
| CN114737108A (en) * | 2022-04-29 | 2022-07-12 | 德兴市立达机械制造有限公司 | Formula of gold bearing and casting process thereof |
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Application publication date: 20110706 |