Brass smelting method

A brass and melt technology, applied in the field of brass processing, can solve the problems of inability to degas and remove slag from the brass melt, and the grain refiner reacts violently, and achieves the advantages of environmental protection, improved absorption rate, and isolation. The effect of air oxidation

Active Publication Date: 2020-11-20
黑龙江北鸥卫浴用品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the defects in the prior art that the brass melt cannot be effectively degassed and slag removed, and the reaction is violent when adding a grain refiner, thereby providing a brass smelting method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The fluffy powder deslagging refining agent (DCHT-3, Ningbo Ding Innovation Material Co., Ltd.) and grain refiner (Desofin brass grain refiner, Qingdao Mien Chemical Co., Ltd.) are in a mass ratio of 98:2 It is formulated as a compound slag removal refining agent and placed in a storage tank.

[0036] Nitrogen is produced by a nitrogen generator and stored in a storage tank under pressure.

[0037]Put 600kg of brass raw material into a furnace with a depth of 60cm in the inner cavity of the furnace, heat and melt to obtain a brass melt, and remove the surface slag after the temperature reaches 1000-1030°C. The nitrogen gas stored in the gas storage tank is dried, dehumidified and degreased, and then mixed with the compound deslagging refining agent, and the nitrogen gas and 3kg of the compound deslagging refining agent are blown in within 2-3 minutes through the blowing device placed in the furnace Into the brass melt, nitrogen and compound slag removal refining agent ...

Embodiment 2

[0039] The fluffy powder deslagging refining agent (HGCTJ_2, Kaiping Hongguang Technology Energy Saving Materials Co., Ltd.) and grain refiner (Desofin brass grain refiner, Qingdao Mien Chemical Co., Ltd.) are 97 in mass ratio: 3 Prepare a compound slag removal refining agent and place it in a storage tank.

[0040] Nitrogen is produced by a nitrogen generator and stored in a storage tank under pressure.

[0041] Put 750 kg of brass raw material into a furnace with a depth of 60 cm in the inner cavity of the furnace, heat and melt to obtain a brass melt, and remove the surface slag after the temperature reaches 1000-1030 °C. The nitrogen gas stored in the gas storage tank is dried, dehumidified and degreased, and then mixed with the compound deslagging refining agent, and the nitrogen gas and 3kg of the compound deslagging refining agent are blown in within 2-3 minutes through the blowing device placed in the furnace Into the brass melt, nitrogen and compound slag removal ref...

Embodiment 3

[0043] With embodiment 1, the difference with embodiment 1 is that the addition of brass raw material is 500kg.

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PUM

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Abstract

The invention relates to a brass smelting method. The brass smelting method comprises the following steps of 1, melting a brass raw material, so that molten brass is obtained; and 2, introducing a deslagging refining agent carried by inert gas and a grain refining agent into the bottom of the molten brass so that degassing, deslagging and grain refining can be achieved. By means of the method, thedeslagging refining agent carried by the inert gas and the grain refining agent are fed into the bottom of the molten brass; in the process when inert gas bubbles disturb and float and the deslaggingrefining agent and the grain refining agent float, the effect that oxidation included slag suspending in the molten brass and oxygen molecules and hydrogen molecules are removed is achieved; the refining purpose is achieved; and grain refinement of the molten brass is achieved.

Description

technical field [0001] The invention relates to the field of brass processing, in particular to a brass smelting method. Background technique [0002] Brass has good mechanical properties and low application cost, and has a wide range of applications. In the existing water supply system, many parts are made of brass, such as water pipe fittings, faucets, and valve core components. and many more. [0003] When casting brass castings, casting manufacturers generally melt brass master alloys or brass scraps through induction furnaces or coke dry boilers to reach the pouring temperature to form castings. However, degassing and slag removal is required during the brass smelting process, otherwise Castings will produce a large number of pores and slag inclusion defects. In the slag removal process, add solid powder refining agent and stir with tools to make the refining agent fully react with the copper liquid in the furnace to degas and remove slag. It is difficult to stir to t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/02C22C1/06C22C9/04C22B9/05C22B15/14
CPCC22C1/02C22C1/06C22C9/04C22B9/05C22B15/00
Inventor 唐台英
Owner 黑龙江北鸥卫浴用品有限公司
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