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A kind of casting steel riser covering agent and its preparation and use

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: 2021-10-15
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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  • A kind of casting steel riser covering agent and its preparation and use
  • A kind of casting steel riser covering agent and its preparation and use

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0033] The preparation method for preparing cast steel riser covering agent is carried out according to the following steps:

[0034] (1) Crushing and grinding the dried raw materials, the particle size is not more than 2mm;

[0035] (2) Weigh each raw material according to the composition quality of the raw material, then mix for 10-20 minutes, stir well, and dry.

Embodiment 1

[0038] The cast steel riser covering agent given in this example, in 100 parts by mass, is composed of the following raw materials: 40 parts of aluminum electrolysis waste cathode carbon blocks, 20 parts of dolomite, 20 parts of vermiculite, and waste and old silicon carbide of aluminum electrolysis - 20 silicon nitride bricks.

[0039] The preparation method for preparing cast steel riser covering agent is carried out according to the following steps:

[0040] (1) Crushing and grinding each raw material to make the particle size within 2mm.

[0041] (2) Weigh each raw material according to the composition quality of the raw material, then mix for 10-20 minutes, stir well, and dry.

[0042] When in use, the cast steel riser covering agent in this embodiment is selected and packaged in a bag of every 20kg. According to the size of the ladle, the amount of the cast steel riser covering agent added is different. After the cast steel riser covering agent is added, a slag layer i...

Embodiment 2

[0045] The cast steel riser covering agent given in this example, in 100 parts by mass, is composed of the following raw materials: 30 parts of aluminum electrolysis waste and old cathode carbon blocks, 30 parts of dolomite, 20 parts of vermiculite, and waste and old silicon carbide of aluminum electrolysis - 20 silicon nitride bricks.

[0046] The preparation method and use method of the cast steel riser covering agent in this embodiment are the same as those in embodiment 1.

[0047] The performance parameters of the cast steel riser covering agent prepared in this example 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 and its preparation and use method. The cast steel riser covering agent includes 15 to 40 parts of aluminum electrolysis waste cathode carbon blocks in 100 parts by mass, 10-35 parts of dolomite, 10-25 parts of vermiculite, 20-40 parts of waste silicon carbide-silicon nitride bricks for aluminum electrolysis; during preparation, the dried raw materials are first crushed and ground, and the particle size is not greater than 2mm; Then weigh each raw material according to the composition quality of the raw materials, then stir evenly, and dry to obtain the casting steel riser covering agent. When in use, the cast steel riser covering agent is added to the ladle to form a slag layer, and finally the thickness of the slag layer is 6-8 cm, the liquid surface of the ladle does not leak red, and the slag layer does not crust. By using the casting steel riser covering agent of the present invention, the heat loss at the top of the riser can be solved, and the solidification speed of the molten steel in the riser can be extended, thereby improving the feeding capacity of the molten steel in the riser, ensuring the process yield of castings, and reducing the risk of leakage. The height of the mouth can save molten steel and ultimately reduce the cost.

Description

【Technical field】 [0001] 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. 【Background technique】 [0002] Casting is the most flexible method for manufacturing complex parts. The application of advanced casting technology has brought new vitality to the manufacturing industry, but it has also encountered great challenges from inside and outside the foundry industry. In my country, casting has a long history, and the use of cast steel riser covering agent has been in use since the 1970s, which is closely related to the development of continuous casting technology. [0003] At present, the most common method is to set up a heat preservation 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 casting alloy, thereby improving its feedi...

Claims

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Application Information

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Patent Type & Authority Patents(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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