Cast steel riser covering agent as well as preparation and using method thereof

A covering agent and cast steel technology, which is applied in the field of metallurgy, can solve problems affecting natural ecological balance, crop production reduction, and surrounding animal and plant hazards, and achieve the effects of good spreadability and heat preservation, small collapse, and small bulk density

Active Publication Date: 2019-07-23
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, it is also very harmful to the surrounding animals and plants, affects the natural ecological balance, and reduces the yield of crops, so it must be controlled

Method used

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  • Cast steel riser covering agent as well as preparation and using method thereof
  • Cast steel riser covering agent as well as preparation and using method thereof

Examples

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Effect test

preparation example Construction

[0037] Prepare the preparation method of cast steel riser covering agent, carry out according to the following steps:

[0038] (1) Crushing and grinding the dried raw materials, the particle size is not greater than 2mm;

[0039] (2) Weigh each raw material according to the composition quality of the raw materials, then mix them for 10-20 minutes, stir evenly, and dry them.

Embodiment 1

[0042] The cast steel riser covering agent given in this embodiment is composed of the following raw materials in terms of 100 mass units: 40 parts of aluminum electrolysis waste cathode carbon block, 20 parts of dolomite, 20 parts of vermiculite, waste and old silicon carbide of aluminum electrolysis - 20 parts of silicon nitride bricks.

[0043] Prepare the preparation method of cast steel riser covering agent, carry out according to the following steps:

[0044] (1) Crushing and grinding each raw material to make the particle size within 2mm.

[0045] (2) Weigh each raw material according to the composition quality of the raw materials, then mix them for 10-20 minutes, stir evenly, and dry them.

[0046] During use, the cast steel riser covering agent in the present embodiment is carefully packaged as a bag with every 20kg. According to the size of the ladle, the amount of cast steel riser covering agent added is different. After the cast steel riser covering agent is add...

Embodiment 2

[0049] The cast steel riser covering agent given in this embodiment is composed of the following raw materials in terms of 100 mass units: 30 parts of waste cathode carbon blocks for aluminum electrolysis, 30 parts of dolomite, 20 parts of vermiculite, waste and old silicon carbide of aluminum electrolysis - 20 parts of silicon nitride bricks.

[0050] The preparation method and application method of the casting steel riser covering agent of this embodiment are the same as that of Embodiment 1.

[0051] The various performance parameters of the cast steel riser covering agent prepared in this embodiment are shown in Table 1.

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Abstract

The invention belongs to the field of metallurgy, and relates to a cast steel riser covering agent as well as a preparation and using method thereof. The cast steel riser covering agent comprises thefollowing components of, with the total mass units being 100 parts, 15-40 parts of aluminum electrolysis waste cathode carbon block, 10-35 parts of dolomite, 10-25 parts of vermiculite, and 20-40 parts of aluminum electrolysis waste silicon carbide-silicon nitride bricks. During preparing, firstly, crushing and grinding the dried raw materials, wherein the particle size is not more than 2 mm; weighing the raw materials according to the composition quality of the raw materials, uniformly stirring, and drying to obtain the cast steel riser covering agent. During using, a steel ladle is added into the cast steel riser covering agent to form a slag layer, so that the thickness of the slag layer is 6-8 cm, the liquid surface of the steel ladle does not leak red, and the slag layer is not crusted. By using the cast steel riser covering agent, the heat loss at the top of the riser can be solved, the solidification speed of molten steel in the riser can be prolonged, the feeding capacity of the molten steel in the riser is improved, the process yield of the casting is guaranteed, the height of the riser is reduced, the molten steel is saved, and finally the cost is reduced.

Description

[0001] 【Technical field】 [0002] The invention belongs to the field of metallurgy and relates to a cast steel riser covering agent, in particular to a cast steel riser covering agent and a preparation and use method thereof. [0003] 【Background technique】 [0004] Casting is the most flexible way to manufacture complex parts. While the application of advanced casting technology has brought new vitality to the manufacturing industry, it has also made the foundry industry encounter great challenges from both inside and outside the foundry industry. In our country, casting has a long history. The use of cast steel riser covering agent began in the 1970s, and it is closely related to the development of continuous casting technology. [0005] At present, the more common way is to set the thermal insulation riser. Its main function is to ensure that the solidification speed of the liquid metal in the riser is slowed down during the solidification process of the cast alloy, thereby ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D7/10
CPCB22D7/102B22D7/104
Inventor 张朝晖冯璐任耘
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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