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Preparation method of rare earth carburized wear-resistant Fe-W alloy

An alloy and rare earth technology, which is applied in the field of preparation of wear-resistant Fe-W alloy on the surface of rare earth infiltration, can solve the problems of long carburizing time and large hardness gradient of carburized layer, so as to reduce the hardness gradient and increase the depth of carburized layer , the effect of high hardness

Active Publication Date: 2014-04-30
INNER MONGOLIA UNIV OF SCI & TECH
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Problems solved by technology

[0006] The W-containing iron-based binary alloy is cheap and has good plasticity and toughness. After carburizing, Fe will form on the surface 3 C and WC greatly increase the hardness and wear resistance of the surface. However, after carburizing, the hardness gradient of the carburizing layer on the surface is large, and the carburizing takes a long time.

Method used

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  • Preparation method of rare earth carburized wear-resistant Fe-W alloy
  • Preparation method of rare earth carburized wear-resistant Fe-W alloy

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Embodiment 1

[0020] The mass percentage of Fe-W alloy composition is: W5.5%, Fe94.5%. The mass percentage of the carburizing agent is: charcoal 75%, silicon carbide 10, CeO 2 5%, barium carbonate 10%. The Fe-W alloy sample was made into a 20×20×50mm sample with a wire cutting machine, polished with 240#, 800# and 1200# water sandpaper in turn, cleaned with ultrasonic waves in distilled water, and then dried. Spread a 20mm thick carburizing agent on the bottom of the corundum crucible, put in the prepared sample, and make the sample distance from the corundum crucible wall greater than 20mm, then fill the remaining space in the crucible with carburizing agent and compact it, and cover the crucible After the crucible is closed, a high-temperature sealant is used to ensure that the inner space of the crucible is filled with compacted carburizing agent during the process. Heat the temperature of the high-temperature furnace to 850°C and keep it warm, put it into a sealed crucible, raise the...

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Abstract

The invention discloses a preparation method of rare earth carburized wear-resistant Fe-W alloy. The preparation method comprises the following steps: performing solid carburization, namely putting Fe-W binary alloy into a rare earth-containing carburization agent and carburizing at 890-930 DEG C for 4-9 hours; after carburizing, taking out a carburized part and quenching. The alloy prepared by the method not only can keep the integral plasticity toughness and processibility but also is better in wear resistance and hardness.

Description

[0001] technical field [0002] The invention relates to a preparation method of a wear-resistant Fe-W alloy on a rare earth-promoted infiltration surface, belonging to the field of alloy steel and surface heat treatment. Background technique [0003] In the composition design of steel materials, in order to achieve higher wear resistance and hardness, elements such as C, W and Cr are usually added, and the purpose of strengthening is achieved by forming carbides and solid solution strengthening. [0004] However, as the hardness increases, the machinability of the material also deteriorates. In some applications, it is only necessary to increase the hardness and wear resistance of some surfaces of the component, while at the same time, it is required to maintain good plasticity and toughness of the component as a whole. [0005] In order to meet the above requirements, it is necessary to develop an alloy that can not only maintain the overall plasticity, toughness and mach...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C8/66C23F17/00
Inventor 王海燕高雪云任慧平刘杰侯景利
Owner INNER MONGOLIA UNIV OF SCI & TECH
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