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Smelting face-milling process for copper ingots

A technology for milling surfaces and copper ingots is applied in the field of smelting and milling of copper ingots, which can solve the problems of increased milling volume, shrinkage and porosity, and easy segregation, so as to avoid the problem of yield decline and improve enterprise benefits.

Inactive Publication Date: 2019-08-13
ANHUI CHUJIANG TECHCAL NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention overcomes the need to adopt four-sided milling to eliminate surface defects in the prior art, so that the amount of milling is greatly increased, resulting in a decrease in the yield of smelted brass, and the large-thickness ingot is prone to segregation and non-metallic In order to solve the problems of inclusion accumulation, shrinkage cavity and porosity, a copper ingot smelting and milling process is provided. The technical solution of the present invention can provide qualified copper ingots under the premise of ensuring the smelting yield, and reduce ingot defects and reduce The cost increase caused by product reformation and refurbishment improves production efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A kind of smelting milling process of copper ingot of the present embodiment, its steps are as follows:

[0033] (1) Ingredients and smelting

[0034] After the raw materials are weighed according to the composition standard of the product, they are put into the melting furnace for heating and melting, and then the refining agent is added and stirred. Specifically in this embodiment: the specific steps of adding refining agent in step (1) are: place the powdered refining agent in the powder spray tank, and slowly blow the powdered refining agent through the pipeline with nitrogen with a purity of not less than 99.99%. Into the interior of the copper liquid, degassing while removing impurities and refining, wherein the nitrogen pressure is 0.2~0.5MPa, the powder spraying time is 40-50min, and the refining temperature is kept at 1050~1060°C; after the refining agent is added, increase the nitrogen gas Pressure to 0.5MPa.

[0035] It should be noted that: the present inv...

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PUM

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Abstract

The invention discloses a smelting face-milling process for copper ingots, and belongs to the technical field of copper processing. The smelting face-milling process comprises the following steps: (1)preparing materials and smelting; (2) dredging slag, analyzing components, standing and discharging the slag out of a furnace; (3) performing draw-casting; (4) performing saw-cutting; and (5) performing face-milling. According to the technical scheme adopted by the invention, qualified copper ingots can be provided on the premise of guaranteeing a smelting finished product rate, cast ingot defects are reduced, cost increase caused by product modifying and re-melting is reduced, and production efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of copper processing, and in particular relates to a copper ingot smelting and milling process. Background technique [0002] At present, most of the low-end customers in the market are supplied in small rolls, and the weight of the coils is relatively light. The melting and milling process of small coils of copper strips is melting, drawing, sawing, and milling. With the continuous intensification of market competition, customers The piece weight of coils is also constantly increasing. In order to improve efficiency, meet customer requirements, realize piece weight increase, and increase the thickness of the smelting crystallizer, the thickness of the ingot obtained by drawing casting is very large, but the problem is the large thickness of the ingot. The principle On the surface, it is necessary to implement four-sided milling to eliminate surface defects, and if four-sided milling is used, the amount of m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/06C22C9/00C22B15/14C22B9/10B22D11/111B22D11/108B23P15/00
CPCB22D11/004B22D11/108B22D11/111B23P15/00C22B9/10C22B15/006C22C1/06C22C9/00Y02P10/20
Inventor 孙红刚鲁传冬马驰
Owner ANHUI CHUJIANG TECHCAL NEW MATERIAL CO LTD
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