Ash removing agent and surface treatment method for zinc alloy die casting

A surface treatment, zinc alloy technology, applied in the direction of metal material coating process, etc., can solve the problems of high toxicity, poor ash removal effect, endangering the health of operators, etc., to achieve good safety, good ash removal effect, Conducive to the effect of environmental protection

Inactive Publication Date: 2020-08-18
广东东明新材科技有限公司
View PDF4 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Those skilled in the art generally believe that non-acidic ash removal agents are either poor in ash removal effect or highly toxic. For example, a kind of ash removal agent mainly composed of sodium m-nitrobenzene sulfonate and sodium cyanide has been proposed , in this ash remover formula, sodium cyanide is a highly toxic substance, which will seriously endanger the health of operators; sodium m-nitrobenzene sulfonate is a kind of anti-staining salt, which will pollute water into yellow, which is difficult to Disposal, resulting in difficulty in wastewater treatment

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Ash removing agent and surface treatment method for zinc alloy die casting
  • Ash removing agent and surface treatment method for zinc alloy die casting
  • Ash removing agent and surface treatment method for zinc alloy die casting

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0091] After the water washing operation, the zinc alloy die casting is placed in a degreasing agent for degreasing treatment; the degreasing agent includes each component of the following concentration: sodium carbonate 10g / L, sodium tripolyphosphate 20g / L, sodium tetraborate 5g / L L, sodium gluconate 2g / L, OP-10 emulsifier 1.5g / L and water balance; the temperature of the degreasing treatment is 60°C, and the time of the degreasing treatment is 6min.

[0092] After the water washing operation, the zinc alloy die casting is placed in a pickling agent for pickling treatment; the pickling agent includes the following concentrations of components: sulfuric acid 10g / L, hydrofluoric acid 10g / L, surface active Agent 0.2g / L and water balance; The temperature of the pickling treatment is normal temperature, and the time of the pickling treatment is 8s.

[0093] After the washing operation, the zinc alloy die casting is placed in a deashing agent for deashing treatment; the deashing age...

Embodiment 2

[0098] The difference between Example 2 and Example 1 is that the deashing agent includes the components of the following concentrations: sodium hydroxide 25g / L, polyethylene polyamine 20g / L, tetrasodium edetate 5g / L, Sodium percarbonate 15g / L and water surplus; Other contents are identical with embodiment 1.

Embodiment 3

[0100] The difference between Example 3 and Example 1 is that the deashing agent includes the components of the following concentrations: sodium hydroxide 40g / L, polyethylene polyamine 20g / L, tetrasodium edetate 20g / L, Sodium percarbonate 25g / L and water surplus; Other contents are identical with embodiment 1.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to the technical field of metal surface treatment, and discloses an ash removing agent and a surface treatment method for a zinc alloy die casting. The ash removing agent is prepared from components by mass: 10-80 parts of sodium hydroxide, 10-80 parts of polyethylene polyamine, 1-25 parts of ethylene diamine tetraacetic acid tetrasodium and 10-30 parts of sodium percarbonate. The surface treatment method of the zinc alloy die casting includes the following steps that the zinc alloy die casting is put in a degreasing agent for degreasing; the zinc alloy die casting is putin an acid pickling agent for acid pickling; the zinc alloy die casting is put in the ash removing agent for ash removing; the zinc alloy die casting is passivated or electroplated; and the zinc alloy die casting is dried. The ash removing agent in the formula is alkaline, good in safety, beneficial for environmental protection and good in ash removing effect, the surface of the zinc alloy die casting is not corroded, the surface of the acid-pickled or alkali-pickled zinc alloy die casting is clean and bright, and adhesive force of paint on the surface of the zinc alloy die casting obtained after ash removing is better.

Description

technical field [0001] The invention relates to the technical field of metal surface treatment, in particular to a dust remover and a surface treatment method for zinc alloy die castings. Background technique [0002] The material cost of zinc alloy die-casting parts is low, and the die-casting method can be used to form parts with small tolerances and complex shapes in one step, with high production efficiency and low processing costs. At the same time, zinc is widely distributed in nature and has a large reserve. Therefore, it is widely used in industry, especially for structural and decorative parts with low stress and complex shapes that are used to replace copper, copper alloys and steel materials. Zinc alloy die castings are widely used. In the surface treatment process of zinc alloy die castings, pickling or alkali cleaning is required to remove the oxide layer on the surface of zinc alloy die castings. The gray layer is difficult to remove and will affect the subse...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C23G1/20C23G5/06C23G1/10C23C22/78C25D5/34
CPCC23C22/78C23G1/10C23G1/20C23G5/06C25D5/34
Inventor 熊猛况金权温远文李远衡
Owner 广东东明新材科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap