High-strength heat-resisting anti-friction casting tin-nickel bronze and preparation method thereof
A tin-nickel bronze, heat-resistant technology, applied in the field of casting tin-nickel bronze and copper alloy, can solve the problems of low production cost, high temperature strength and unsatisfactory wear-reducing performance, etc., so as to prolong the service life, improve the quality of machine products, save The effect of cost of use
Active Publication Date: 2015-01-21
镇江汇通金属成型有限公司
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Problems solved by technology
The nickel content of the alloy is above 4%, and the tin content is below 8%. It is used after solid solution aging. Due to its high electrical conductivity, high elasticity, low production cost, and non-toxicity, this alloy has been used to replace and partially replace Beryllium bronze is considered to be a promising high-conductivity and high-elasticity alloy for manufacturing precision instruments and instruments, but its high-temperature strength and wear-reducing properties are not ideal. Therefore, the application prospect of this alloy Considering it, it is particularly important to further improve its performance
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[0025] The present invention will be further described below in conjunction with embodiment.
[0026] Embodiment of the preparation method of high-strength heat-resistant and anti-friction casting tin-nickel bronze
[0027] The method for preparing high-strength heat-resistant and wear-reducing cast tin-nickel bronze comprises the following steps:
[0028] 1) Preheat the crucible to fuchsia in an intermediate frequency induction melting furnace;
[0029] 2) Add the calculated amount of electrolytic copper and electrolytic nickel charge to the crucible in turn, add the calculated amount of tin after the copper is melted, and cover the furnace mouth with straw ash;
[0030] 3) After the alloy in the crucible is melted, stir the melted alloy with a stirrer to make its composition uniform;
[0031] 4) Weigh the calculated amount of copper-15% cerium master alloy and copper-10% zirconium master alloy, and carry out two pier and two pulling treatments on the copper-15% cerium mast...
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Abstract
The invention discloses a high-strength heat-resisting anti-friction casting tin-nickel bronze and a preparation method thereof. The tin-nickel bronze comprises the following chemical substances in percentage by weight: 11.5%-12.5% of tin, 3.5%-4.5% of nickel, 0.1%-0.15% of cerium, 0.04%-0.06% of zirconium and the balance of copper. The preparation method of the tin-nickel bronze comprises the following steps: preheating a crucible to cherry red, adding the copper, the nickel and the tin to the crucible, fusing, and then uniformly stirring; then adding a copper-cerium intermediate alloy and a copper-zirconium intermediate alloy which are subjected to two-upsetting and two-drawing treatment, fusing, standing, then introducing nitrogen and adding phosphorus copper for deoxidizing degasification, controlling furnace temperature, discharging out of a furnace, and casting. The high-strength heat-resisting anti-friction casting tin-nickel bronze disclosed by the invention has the advantages of fine crystal grain, high strength, high-temperature strength especially, low friction coefficient and preferable inoxidizability.
Description
technical field [0001] The invention relates to a copper alloy, in particular to a cast tin-nickel bronze with high strength, especially high-temperature strength, good oxidation resistance and low friction coefficient, belonging to the technical field of metal materials. Background technique [0002] Cast copper alloy is a key and basic manufacturing material. It is widely used in the manufacture of key machine parts such as worm gears, wear-resistant sliders, gears, and bushings. Its performance is directly related to the service life of the machine. With the development of industrial technology, machine parts are faced with harsher working conditions such as high temperature, high speed, high quality flow, and heavy load. At the same time, the stability, reliability and safety requirements of machine equipment are also getting higher and higher. Wear-resistant copper alloy materials put forward higher performance requirements that can meet harsh service conditions, such a...
Claims
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IPC IPC(8): C22C9/02C22C1/03
CPCC22C1/03C22C9/02
Inventor 纪嘉明唐山鲁远勇孟国萃
Owner 镇江汇通金属成型有限公司