A Compatible and Water-saving System for Degreasing and Chromizing Chemicals for Aluminum Slag Reduction

A water-saving system and pharmaceutical technology, applied in the direction of metal material coating process, etc., can solve problems such as affecting the stability of chromating solution, and achieve the effect of eliminating the risk of precipitation, not easy to hang ash, and not easy to crystallize precipitates.

Active Publication Date: 2020-01-14
FOSHAN SANSHUI XIONGYING INNOVATION CENT FOR ALUMINUM SURFACE TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These are the reducing agent components, in the presence of chromic anhydride (CrO 3 ), hydrofluoric acid, nitric acid, and boric acid baths are easily decomposed by oxidants, which affects the stability of the chromating solution

Method used

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  • A Compatible and Water-saving System for Degreasing and Chromizing Chemicals for Aluminum Slag Reduction
  • A Compatible and Water-saving System for Degreasing and Chromizing Chemicals for Aluminum Slag Reduction
  • A Compatible and Water-saving System for Degreasing and Chromizing Chemicals for Aluminum Slag Reduction

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Embodiment Construction

[0075] The present invention's degreasing and chromating agent compatibility and water-saving system for reducing slag in the aluminum industry is based on fully understanding the production confusion of aluminum processing enterprises. Huge spraying pretreatment process, a new process born after unprecedented systematic research.

[0076] 1. Quantitative and qualitative analysis of degreasing and chromating stable and compatible agents.

[0077] 1. Qualitative and quantitative analysis of each component of degreasing fluid

[0078] In the prior art, the acid degreasing liquid generally selects sulfuric acid, phosphoric acid, nitric acid, hydrochloric acid, hydrofluoric acid, sodium fluoride, ammonium fluoride, ammonium bifluoride and an appropriate amount of surfactant for degreasing. The quantitative and qualitative analysis of each component is as follows:

[0079] Sulfuric acid: Sulfuric acid is the basic component of acid degreasing, and its function is to provide acidi...

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Abstract

The invention discloses an aluminum industry slag reduction oil removal and chromizing medicament compatibility and water saving system. The system comprises an oil removing tank, a first non-flowingwater washing tank set, a chromizing tank and a second non-flowing water washing tank set; the oil removing tank and the second non-flowing water washing tank set respectively communicate with the first non-flowing water washing tank set; aluminum products pass through the oil removing tank, the first non-flowing water washing tank set, the chromizing tank and the second non-flowing water washingtank set in sequence; the oil removing tank is filled with oil removing liquid; the chromizing tank is provided with chromizing liquid; and the oil removing liquid and the chromizing liquid are compatible. Attention is given to compatibility of selected components with the oil removing liquid for the first time. On the bases of medicament compatibility and stabilization of tank liquid, medicamentstop and reverse water supply are provided; and zero emission of waste water and water slag in spraying and chromizing and water saving in production are realized.

Description

technical field [0001] The invention relates to the technical field of metal surface treatment, in particular to a degreasing and chromizing agent compatible and water-saving system for reducing slag in the aluminum industry. Background technique [0002] Aluminum and aluminum alloys have the advantages of excellent processing performance, good corrosion resistance, beautiful surface, high recovery rate, etc., and have been widely used in construction, transportation, machinery, electric power and other industries. In recent years, the trend of expanding the application of aluminum by replacing steel with aluminum has become more obvious . The aluminum processing industry is a traditional industry, and it is a sunrise industry full of vitality. According to statistics, the per capita consumption of aluminum in developed countries in Europe and the United States is more than 32kg, while that in my country is only about 13kg, which is only about one-third of that in developed...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C22/00C23G1/02C23C22/37C23C22/78
CPCC23C22/00C23C22/37C23C22/78C23G1/02
Inventor 熊映明
Owner FOSHAN SANSHUI XIONGYING INNOVATION CENT FOR ALUMINUM SURFACE TECH
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