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High-strength Co-CaO cobalt alloy and preparation method thereof

A cobalt alloy, high-strength technology, applied in the field of high-strength Co-CaO cobalt alloy and its preparation, can solve the problems of high modification cost, insufficient effect, insufficient performance of cobalt alloy material, etc., so as to improve mechanical properties and reduce material Cost, the effect of easy industrial production

Inactive Publication Date: 2018-06-29
佛山杰致信息科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the defects of insufficient cobalt alloy material performance, relatively high modification cost, and insufficient effect in the prior art, the present invention provides a high-strength Co-CaO cobalt alloy and its preparation method

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  • High-strength Co-CaO cobalt alloy and preparation method thereof
  • High-strength Co-CaO cobalt alloy and preparation method thereof
  • High-strength Co-CaO cobalt alloy and preparation method thereof

Examples

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Effect test

Embodiment 1

[0034] The high-strength Co-CaO cobalt alloy of the present embodiment comprises the following components: Co commercial cobalt alloy, 0wt% CaO (wt% refers to the percentage that the weight of each component accounts for the total weight of the target alloy, and this total weight is Co commercial cobalt alloy total weight).

[0035] The preparation method is as follows:

[0036] Melting process: the whole melting process is in SF 6 and CO 2 Under the condition of mixed gas protection. Weigh the Co commercial cobalt alloy according to the formula quantity, and then bake the weighed raw material at 180° C. for more than 3 hours. Put the dried Co commercial cobalt alloy into the SF 6 and CO 2 Heat and melt in a crucible resistance furnace protected by a mixed gas to obtain a molten Co cobalt liquid. When the temperature of the cobalt liquid rises to 720°C, keep the temperature constant, sprinkle the pre-weighed refining agent evenly on the cobalt liquid, and stir for 10 minu...

Embodiment 2

[0041] The high-strength cobalt alloy of the present embodiment comprises the following components in mass percentage: Co commercial cobalt alloy, 1wt% CaO (wt% refers to the percentage of the weight of each component accounting for the total weight of the target alloy, and the total weight is Co total weight of commercial cobalt alloys).

[0042] The preparation method is as follows:

[0043] Melting process: the whole melting process is in SF 6 and CO 2 Under the condition of mixed gas protection. Weigh the Co commercial cobalt alloy according to the formula quantity, and then bake the weighed raw material at 180° C. for more than 3 hours. Put the dried Co commercial cobalt alloy into the SF 6 and CO 2Heat and melt in a crucible resistance furnace protected by a mixed gas to obtain molten Co cobalt liquid. When the temperature of the cobalt liquid rises to 740°C, keep the temperature constant. Use a stainless steel bell jar to press the CaO powder wrapped in aluminum fo...

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Abstract

The invention belongs to the technical field of metal materials, and relates to a high-strength Co-CaO cobalt alloy and a preparation method thereof. A certain mass of CaO is added in a Co cobalt alloy for refining, casting, uniform treatment and plastic deformation to obtain the high-strength Co-CaO cobalt alloy. The obtained alloy refines cast-state grains, forms a strengthening phase with high-temperature stability, and achieves a strengthening effect; in plastic deformation, the generated high-temperature strengthening phase promotes recrystallization, so that the Co-CaO alloy achieves more excellent mechanical performances; and under the condition of basically invariable ductility, the tensile strength is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of metal materials, and specifically relates to a cobalt alloy and a preparation method thereof, in particular to a high-strength Co-CaO cobalt alloy and a preparation method thereof. Background technique [0002] Cobalt (Co) alloy has the advantages of low density, wide source, high specific strength and specific stiffness, etc., and is known as "the green engineering material of the 21st century". Among cast cobalt alloys, tungsten-cobalt alloy is one of the most widely used cast cobalt alloy systems due to its low cost, easy casting and processing, and good comprehensive performance. One of the major problems restricting cobalt alloys at present is that their strength is low, which cannot meet the requirements of engineering applications. Therefore, the development of new high-strength cobalt alloys is of great value. The yield strength of the traditional cobalt alloy has been greatly improved, but the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C23/00C22C1/02C22C1/06C22F1/06
CPCC22C23/00C22C1/02C22C1/06C22F1/06
Inventor 刘威
Owner 佛山杰致信息科技有限公司
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