Ornamental Metal Product Aluminum Alloy Bronze Part Mold Die Casting

 

1. The surface of die-casting aluminum alloy is electroplated with colored zinc. Aluminum itself is an amphoteric metal and is unstable in acidic or alkaline solutions. In addition, the structure of die-casting aluminum alloy itself is loose, with defects such as sand holes and pores, which often affect the electroplating quality. After appropriate pre-treatment, the electrogalvanizing of die-casting parts becomes easier. Electroplating a zinc layer of about 10um and then passivation treatment can greatly improve the corrosion resistance of die-casting aluminum alloys. To prevent discoloration of colored zinc, an organic protective film can be dipped and coated.

2. The surface of die-casting aluminum alloy is subjected to chromate treatment. After sandblasting, the die-casting aluminum alloy can be directly chromated to obtain a passivation film on the surface. This film can be colorless to yellow as needed and does not affect surface resistance. In order to meet the requirements of product protection, chromate treatment can be followed by spraying.

 

Introduction to metal surface treatment types: electroplating/electrophoresis/zinc plating/blackening/metal surface coloring/shot blasting/sandblasting/shot blasting/phosphating/passivation.

Electroplated coated metal or other insoluble materials are used as anodes, and the workpiece to be plated is used as cathodes. The cations of the coated metal are reduced on the surface of the workpiece to form a coating. To eliminate interference from other cations and make the coating uniform and firm, it is necessary to use a solution containing the metal cations of the coating as the electroplating solution to maintain the concentration of the metal cations of the coating unchanged. The purpose of electroplating is to coat the substrate with a metal coating, changing the surface properties or dimensions of the substrate. Electroplating can enhance the corrosion resistance of metals (coated metals are mostly corrosion-resistant), increase hardness, prevent wear, improve conductivity, lubrication, heat resistance, and surface aesthetics.

 

Electrophoresis is the process of applying a voltage to the cathode of an electrophoretic coating at both the positive and negative poles, causing charged coating ions to move to the cathode and react with the alkaline surface of the cathode to form an insoluble substance, which is deposited on the surface of the workpiece.

Characteristics of electrophoresis: Electrophoretic paint film has the advantages of full, uniform, flat, and smooth coating, and its hardness, adhesion, corrosion resistance, impact performance, and permeability are significantly better than other coating processes.

 

Galvanization

Galvanizing refers to the surface treatment technique of plating a layer of zinc on the surface of metals, alloys, or other materials for aesthetic and rust prevention purposes. The main method used now is hot-dip galvanizing.

 

The difference between electroplating and electrophoresis is the process of plating a thin layer of other metals or alloys on certain metal surfaces using the principle of electrolysis. Electrophoresis: The phenomenon of charged particles (ions) moving in a solution under an electric field. The phenomenon of charged particles (ions) moving in an electric field in a solution. The technology of using charged particles to move at different speeds in an electric field to achieve separation is called electrophoresis technology. Electrophoresis, also known as electrocautery, electrophoretic paint, or electrodeposition.

Blackening

The surface blackening treatment of steel parts is also known as bluing. The principle is to rapidly oxidize the surface of steel products, forming a dense oxide film protective layer, and improving the rust resistance of steel parts. The commonly used methods for blackening include traditional alkaline heating blackening and later room temperature blackening. But the room temperature blackening process is not very effective for low-carbon steel. It is better to use alkaline blackening for A3 steel. At high temperatures.

 

The oxidized iron trioxide (about 550 ℃) appears sky blue, hence it is called bluing treatment. The formation of ferric oxide at low temperatures (about 350 ℃) is dark black, hence it is called blackening treatment. In weapon manufacturing, the commonly used method is bluing; In industrial production, blackening treatment is commonly used.

Adopting alkaline oxidation method or acidic oxidation method; The process of forming an oxide film on the metal surface to prevent corrosion is called 'bluing'. The oxide film formed on the surface of black metal after "blueing" treatment, with the outer layer mainly composed of ferric oxide and the inner layer composed of ferrous oxide.

 

The operation process for blueing (blackening): workpiece clamping - degreasing - cleaning - acid washing - cleaning - oxidation - cleaning - saponification - hot water boiling - inspection. The so-called saponification refers to soaking the workpiece in a soapy water solution at a certain temperature. The purpose is to form a layer of iron stearate film to improve the corrosion resistance of the workpiece. Metal surface coloring, as the name suggests, is to "paint" the metal surface with colors, changing its single, cold metal color and replacing it with colorful colors to meet the different needs of different industries. After coloring the metal, it generally increases its anti-corrosion ability, and some also increase its wear resistance. But the main application of surface color technology is still in the field of decoration, which is used to beautify life and society.

 

The principle of shot blasting is to use an electric motor to drive the impeller body to rotate (directly driven or driven by a V-belt), and by the action of centrifugal force, projectiles with a diameter of about 0.2~3.0 (including cast steel shot, steel wire cut shot, stainless steel shot, and other types) are thrown onto the surface of the workpiece to achieve a certain roughness, making the workpiece beautiful, or changing the welding tensile stress of the workpiece to compressive stress, improving the service life of the workpiece. By improving the surface roughness of the workpiece, the adhesion of the paint film for subsequent painting of the workpiece is also improved.

 

 

 

 

Basic Information

Total Capitalization	less than US$50,000
Country / Region	China
Year Established	2014
Total Employees	100 to 149
Business Type	Exporter, Manufacturer, Trading Company

 

Trading Capabilities

Total Annual Sales	less than US$50,000
Export Percentage	90 percent to 94 percent
OEM Services	Yes
Small Orders Accepted	Yes
Brand Names	Innolead
Payment Terms	TT
Main Competitive Advantages	Experienced R&D Department, Large Product Line, ODM (Original Designing & Manufacturing), OEM Capability, Production Capacity, Reliability, Reputation
Other Competitive Advantages	NA
Major Customer	Soprano, European Thermodynamics Ltd.
Export Markets	Australasia, Central/South America, Eastern Europe, Mid East/Africa, North America, Western Europe

 

 

 

 

 

 

 

 

 

 

 

 

 

CONTACT US

Alex He

Tel:+86 15989331617

Whatsapp&Wechat:+86 15989331617

Skype ID:alex.ho43

Email: alex.he@innolead.net

 

Web:www.innolead.net

 

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