CN101643867B - High performance copper casting alloy and preparation method thereof - Google Patents

High performance copper casting alloy and preparation method thereof Download PDF

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CN101643867B
CN101643867B CN2009101846990A CN200910184699A CN101643867B CN 101643867 B CN101643867 B CN 101643867B CN 2009101846990 A CN2009101846990 A CN 2009101846990A CN 200910184699 A CN200910184699 A CN 200910184699A CN 101643867 B CN101643867 B CN 101643867B
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copper
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alloy
high performance
electrolytic
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CN101643867A (en
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鲁远勇
纪嘉明
吴晶
虞建平
邵红红
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Zhenjiang Huitong Metal Forming Co Ltd
Jiangsu University
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Zhenjiang Huitong Metal Forming Co Ltd
Jiangsu University
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Abstract

The invention discloses a high performance copper casting alloy, comprising the following chemical compositions by weight percent: 8.5-10.5% of aluminum, 1.0-3.0% of nickel, 3.0-5.0% of iron, 1.0-3.0% of manganese, 0.1-0.15% of cerium and the balance copper. The preparation method comprises the following steps: preheating a crucible, adding electrolytic copper, which is crushed to nubbles and accounts for 10% of the total amount of copper to be added, manganese, electrolytic nickel, charcoal and the balance electrolytic copper according to the charging sequence, heating to 1200-1250 DEG C, adding sheet iron, aluminum, cooling copper and rare earth cerium, heating to 1200-1250 DEG C, adding refining agent, adding phosphor copper preliminary alloy to deoxidize, discharging and pouring and performing air cooling to casting. The high performance copper casting alloy of the invention has high strength and good toughness, can be used for the preparation of high load mechanical transmission parts such as nuts, worm wheels, bearings and the like and can prolong the service life of mechanical transmission parts and reduce the maintenance load of devices, thus greatly reducing the cost.

Description

High performance copper casting alloy and preparation method thereof
Technical field
The present invention relates to a kind of non-ferrous metal alloy, relate in particular to a kind of comprehensive mechanical performance cast copper alloy preferably, belong to the metallic substance technical field.
Background technology
The existing main raw that is used to make screw, worm gear, wear-resisting slide block, gear, axle sleeve, bearing manufacturing is cast brass, tinbronze and xantal, but above-mentioned materials is because comprehensive mechanical property is relatively poor.For example the intensity of some trade mark cast copper alloy and hardness are higher, but its plasticity and toughness are lower; Or the plasticity and toughness of other trade mark cast copper alloys are higher and intensity and hardness are lower.Be difficult to satisfy the requirement in work-ing life of cast copper alloy under the more abominable operating mode of modern industry.
In recent years, the high performance casting wear-resistant copper alloy has been carried out a large amount of research both at home and abroad, it is the HZ alloy that the Cu-Co-Be of Japan's exploitation is abroad arranged, and Cu-Fe-P-Sn is the KT-1 alloy, and Cu-Cr-Zr is a DMC alloy etc.Domestic have KK alloy, the high-strength wearable bronze of Hl (Al-Fe-Mn-Pb system), an a kind of novel copper-base alloy moulding stock that is used for stainless steel and the stretch forming of 08F low carbon steel products etc.Wherein the chemical ingredients of KK alloy (weight percent) is aluminium 9-10.5%, nickel 1.0-2.5%, iron 3.0-5.0%, manganese 1.0-2.5%, Yu Weitong, and its mechanical property is: tensile strength 633MPa, unit elongation 18%, hardness 169HB, impelling strength 43J/cm 2The KK alloy has improved the comprehensive mechanical property of casting wear-resistant copper alloy significantly, but plasticity index such as its unit elongation, impelling strength do not reach yet than higher degree, influences the work-ing life of high performance copper casting alloy.
Summary of the invention
The comprehensive mechanical property excellence that the purpose of this invention is to provide a kind of high performance copper casting alloy, this cast copper alloy.
The present invention is achieved by the following technical programs:
A kind of high performance copper casting alloy, by weight percentage, its chemical ingredients is: aluminium 8.5-10.5%, nickel 1.0-3.0%, iron 3.0-5.0%, manganese 1.0-3.0%, cerium 0.1-0.15%, Yu Weitong.
High performance copper casting alloy is the preparation method may further comprise the steps:
1) crucible is preheating to cherry red in the Medium frequency induction smelting furnace;
2) add electrolytic copper, manganese, electrolytic nickel, charcoal, the electrolytic copper of the pulverizing frustillatum need add copper amount 10% by loading sequence; Wherein charcoal needs to keep 2-4 hour, to remove moisture and organism more than high temperature carbonization to 800 ℃;
3) accelerated warming fusing, temperature raising is to 1200-1250 ℃, and The faster the better for burn-off rate;
4) add iron plate, stir;
5) add aluminium, add cooling copper;
6) add the rare earth cerium that adds with the copper rare earth intermediate alloy, and need bell jar to be pressed into;
7) static 5-10 minute, the stokehold check, fracture is thin and even, and the clod wash angle reaches more than 90 °;
8) be warming up to 1200-1250 ℃, add refining agent.Press furnace charge 0.10% weight and add the phosphor bronze alloy deoxidation;
9) thermometric, the cast of coming out of the stove of skimming, air-cooled foundry goods.
The invention has the beneficial effects as follows:
Adopt the high performance copper casting alloy of composition proportion of the present invention and preparation method's manufacturing to have the excellent comprehensive mechanical property, its tensile strength 〉=700MPa, unit elongation 〉=25%, hardness 〉=140HB, impelling strength 〉=50J/cm 2With existing same type of material KK alloy phase ratio, its tensile strength has improved more than 10.6%, and unit elongation has improved more than 38.9%, and impelling strength has improved more than 11.6%; Has excellent comprehensive mechanical properties.The mechanical transmissioning piece that the present invention is used to make screw, worm gear, wear-resisting slide block, gear, axle sleeve, the contour load operation of bearing, can prolong the work-ing life of above-mentioned mechanical transmissioning piece significantly, reduce mechanical transmissioning piece because of the undesirable damage that in high loading work, causes of comprehensive mechanical property, reduce the maintenance load of equipment, thereby greatly reduced use cost.
Advantage of the present invention and characteristics will illustrate by the non-limitative illustration of following preferred embodiment and explain that these embodiment only provide as an example with reference to accompanying drawing.
Description of drawings
Fig. 1 is a preparation method's of the present invention schema.
Embodiment
The invention will be further described below in conjunction with drawings and Examples.
Prepare high performance copper casting alloy of the present invention by following material mixture ratio and step: aluminium 8.5-10.5% in the material mixture ratio, nickel 1.0-3.0%, iron 3.0-5.0%, manganese 1.0-3.0%, cerium 0.1-0.15%, Yu Weitong.
As shown in Figure 1, the preparation method of high performance copper casting alloy of the present invention is as follows:
1) crucible is preheating to cherry red in the Medium frequency induction smelting furnace;
2) by loading sequence add fritter shape electrolytic copper (account for total need add copper content 10%), manganese metal, electrolytic nickel, charcoal, electrolytic copper; Wherein charcoal needs to keep 2-4 hour, to remove moisture and organism more than high temperature carbonization to 800 ℃;
3) accelerated warming fusing, temperature raising is to 1200-1250 ℃, and The faster the better for burn-off rate;
4) add iron plate, stir;
5) add aluminium, add cooling copper;
6) add the rare earth cerium, the rare earth cerium adds with the copper rare earth intermediate alloy, and needs bell jar to be pressed into;
7) static 5-10 minute, the stokehold check, fracture should be carefully and evenly, and the clod wash angle reaches more than 90 °;
8) be warming up to 1200-1250 ℃, add refining agent.Press furnace charge 0.10% weight and add the phosphor bronze alloy deoxidation;
9) thermometric, the cast of coming out of the stove of skimming, air-cooled foundry goods.
The cast copper alloy composition proportion of three embodiment and comprehensive mechanical property are to such as table 1.
Table 1
Figure GSB00000540926400041
The rare earth cerium that contains among the present invention can play deoxidation, desulfurization in fusion process, and generate some dystectic compounds (as PbCe with some detrimental impurity Pb, Bi etc., BiCel), play and remove detrimental impurity, purify the matrix of alloy and the effect of crystal boundary.The adding of rare earth cerium simultaneously is the microstructure of refinement alloy effectively, and crystal grain thinning is the only resource that improves the strength of materials and plasticity and toughness simultaneously, and the comprehensive mechanical performance of cast copper alloy is greatly enhanced, and it can be more widely used.
In addition to the implementation, the present invention can also have other embodiments, and all employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop in the protection domain of requirement of the present invention.

Claims (1)

1. a high performance copper casting alloy is characterized in that, by weight percentage, the chemical ingredients of this copper alloy is: aluminium 8.5-10.5%, nickel 1.0-3.0%, iron 3.0-5.0%, manganese 1.0-3.0%, cerium 0.1-0.15%, Yu Weitong; The preparation method of high performance copper casting alloy may further comprise the steps:
1) crucible is preheating to cherry red in the Medium frequency induction smelting furnace;
2) add electrolytic copper, manganese, electrolytic nickel, charcoal, all the other electrolytic coppers of the pulverizing frustillatum that need add copper amount 10% successively by loading sequence; Wherein charcoal needs to keep 2-4 hour, to remove moisture and organism more than high temperature carbonization to 800 ℃;
3) accelerated warming fusing, temperature raising is to 1200-1250 ℃, and The faster the better for burn-off rate;
4) add iron plate, stir;
5) add aluminium, add cooling copper;
6) add the rare earth cerium that adds with the copper rare earth intermediate alloy, and need bell jar to be pressed into;
7) static 5-10 minute, the stokehold check, fracture is thin and even, and the clod wash angle reaches more than 90 °;
8) be warming up to 1200-1250 ℃, add refining agent; Press furnace charge 0.10% weight and add the phosphor bronze alloy deoxidation;
9) thermometric, the cast of coming out of the stove of skimming, air-cooled foundry goods.
CN2009101846990A 2009-08-28 2009-08-28 High performance copper casting alloy and preparation method thereof Active CN101643867B (en)

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Cited By (1)

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CN103882254A (en) * 2014-04-14 2014-06-25 海门市江滨永久铜管有限公司 Aluminium bronze continuously-cast tube with both high strength and high ductility, and production method thereof

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CN102304641A (en) * 2011-08-15 2012-01-04 镇江汇通金属成型有限公司 Degassing and deoxidation process for cast aluminum bronze
CN102560187B (en) * 2012-03-10 2013-04-10 甘肃大鑫铜业有限责任公司 Method for preparing copper alloy for electrified railway contact network
CN102776410B (en) * 2012-08-24 2014-05-07 宁波市阳光汽车配件有限公司 Corrosion-resistant copper alloy
CN103921091A (en) * 2014-04-01 2014-07-16 李梦锡 Copper ware manufacturing method
CN103952589A (en) * 2014-05-12 2014-07-30 王新海 Copper alloy
CN106048302B (en) * 2016-08-09 2018-01-02 苏州天兼新材料科技有限公司 A kind of founding materials for being applied to nuclear power and wind-powered electricity generation and preparation method thereof
CN107058796B (en) * 2017-04-19 2019-01-29 河南科技大学 A kind of microalloying of rare earth acid bronze alloy, preparation method and the method for being squeezed into bar
CN108193076A (en) * 2017-12-13 2018-06-22 浙江灿根智能科技有限公司 A kind of high temperature Vulcan metal and production method
CN108118183A (en) * 2017-12-13 2018-06-05 浙江灿根智能科技有限公司 Abrasion-resistant cast copper alloy and preparation method with high rigidity
CN108193079A (en) * 2017-12-13 2018-06-22 浙江灿根智能科技有限公司 For manufacturing the copper alloy of turbine and preparation method
CN109706341B (en) * 2019-01-18 2021-02-12 沈阳金科有色产品研制有限公司 Cobalt-containing high-strength high-hardness wear-resistant copper alloy and preparation method thereof

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CN1936049A (en) * 2006-05-12 2007-03-28 阳西县电梯配件有限公司 Aluminium brone casting and its preparing method
CN101435032A (en) * 2008-11-19 2009-05-20 苏州有色金属研究院有限公司 Corrosion resistant multi-aluminum bronze material for pipe

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Cited By (2)

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Publication number Priority date Publication date Assignee Title
CN103882254A (en) * 2014-04-14 2014-06-25 海门市江滨永久铜管有限公司 Aluminium bronze continuously-cast tube with both high strength and high ductility, and production method thereof
CN103882254B (en) * 2014-04-14 2015-10-28 海门市江滨永久铜管有限公司 Have the xantal continuous casting tubing and production method thereof of high strength, high ductility concurrently

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