Preparation process of cast steel insulated feeder covering agent

A heat preservation riser and covering agent technology, which is applied in the direction of casting molds, casting mold components, manufacturing tools, etc., can solve the problem that the heat loss at the top of the riser cannot be compensated, so as to reduce the effective height, improve the quality and yield, and save molten steel Effect

Inactive Publication Date: 2016-05-04
李玲
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, although the thermal insulation riser greatly reduces the heat loss at the side of the riser, it cannot compensate for the heat loss at the top of the riser. According to relevant data, the heat loss at the top of the riser is equivalent to that at the side of the riser.

Method used

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Embodiment Construction

[0011] The following clearly and completely describes the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention

[0012] The content of acidified graphite and perlite in the covering agent has a significant impact on the thermal insulation performance of the covering agent. As the content of acidified graphite increases, the expansion effect of the covering agent increases significantly, and the heat preservation effect becomes better and better. However, when the acidified graphite content exceeds 18wt%, the expansion factor of the covering agent increases to 2-6 times, and the thermal insulation performance gradually decreases. Therefore, the...

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Abstract

The invention discloses a preparation process of a cast steel insulated feeder covering agent. The cast steel feeder covering agent is prepared by 4-8 wt% of aluminum powder, 25-354 wt% of coal ash, 15-18 wt% of perlite, 14-18 wt% of acidized graphite, 10-15 wt% of carbon powder, 2-3 wt% of triggering agent and 8-22 wt% of other materials. The prepared covering agent has dual effects of heating and thermal insulation, can obviously improve the feeder feeding capacity, reduces effective feeder height, saves molten steel, improves the casting quality and yield, and is an effective cast steel feeder covering agent worthy of popularization and application.

Description

technical field [0001] The invention relates to a configuration process of a cast steel thermal insulation riser covering agent. Background technique [0002] 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 1990s, and it is closely related to the development of continuous casting technology. [0003] At present, there are not many controllable factors in the process of casting, such as the temperature of casting, the speed of casting, the method of casting, etc., and the protection of injection is one of the effective methods to improve the quality of steel. Before using the cast steel riser covering agent to inject, the usual protective ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/08B22D7/10
CPCB22C9/088B22D7/10
Inventor 李玲
Owner 李玲
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