Name: China Blackened Parts Manufacturers Suppliers Factory - High Quality Blackened Parts
Brand: Ehisen
SKU: 233448198

Production Introduction

Black oxidation is a chemical conversion process used to blacken the surface of a part without adding a thick coating. The chemical conversion process uses a chemical solution to force a reaction on the surface of a part, rather than an electroplating or coating process that adds a thicker layer to the top of the substrate. Black oxidation is most commonly used for ferrous metals (ferrous metals), but there are also methods for black oxidation of other metals, such as copper and stainless steel, that are specifically designed to resist surface reactions.

Product advantage

Compared with other metal surface treatment processes, the metal blackening process has the following advantages:

1. Low cost: Compared with other surface treatment processes, the cost is low. It does not require complex equipment and expensive raw materials, so it is more economical in some cases of mass production or limited budgets.

2. Corrosion resistance: The oxide layer formed on the metal surface has a certain corrosion resistance, which can improve the corrosion resistance of the metal and extend the service life.

3. Wide range of application: suitable for a variety of metals, including iron, steel, copper, aluminum, etc., so it can achieve blackening effect on different types of metal parts.

4. No coating size: the thickness of the blackening coating is about 0.5μm, which does not affect the function of the part itself.

5. Environmental protection: Some blackening agents and treatment agents used in the blackening process are relatively environmentally friendly, and the content of harmful substances is not high. This is in line with the requirements of modern environmental awareness, making the process more competitive in some areas with high environmental requirements.

6. Reduce light reflection: reduce the light reflection of the metal surface, suitable for some occasions that need to reduce light reflection, such as military equipment, photography equipment, etc.

7. Simple maintenance: with a certain degree of self-cleaning, not easily affected by stains and fingerprints. The maintenance of metal parts is simplified and the frequency of cleaning is reduced.

Product parameter

Base material	carbon steel, stainless steel, copper, zinc, brass, aluminum
Shape and size	according to customer requirements
Production technology	High temperature blackening, medium temperature blackening, room temperature blackening
Color	Black, dark blue and other colors
Service life	It can typically withstand up to 100 hours of neutral salt spray (ASTM B117) or hundreds of hours of humidity (ASTM D1748), depending on the sealant used.

Process characteristics

Ehisen blackening parts use the medium temperature blackening process, the temperature required for the medium temperature blackening process (200° to 210° F) is much lower than the traditional high temperature blackening process, so the operation is safer and the heating cost is lower, and now it has become an ideal alternative to the high temperature blackening process. A black magnetite (Fe3O4) coating can be formed on the surface of all steel parts (excluding stainless steel).

Chinses Blackened part Suppliers

Medium temperature blackening process features:

1. The blackening process takes about 25-30 minutes

2. Satin black to semi-gloss black appearance

3. Resist wear and help run-in

4. Can withstand up to 120 hours of neutral salt spray or hundreds of hours of humidity

5. The operating solution does not contain EPA regulated chemicals; Process flush water is usually transported to the drain as a harmless discharge

Finished product inspection

Various performance tests can be used to measure the success of the blackening process. Listed below are two commonly used test methods for blackening coating performance:

1. Coal dust test

This process is a physical test used to test the finish of a metal surface. It is recommended to rub the surface of the part with your hand after coating. If the coating is worn off, there is a problem with the blackening process.

2. Relative humidity test

This is a test of the corrosion resistance of the blackened coating part. This test examines the corrosion resistance of the black oxide part when used at 100% relative humidity.

Production process

Chinses Blackened part Suppliers

Application field

Chinses Blackened part Suppliers

FAQ

What's your price?

Our prices are set according to market conditions and product quality, so as to ensure the most competitive prices for customers. The specific price can be found in our catalogue or quotation.

How is your after-sales service?

Our company provides comprehensive after-sales service, including product quality assurance, technical support and maintenance services. If customers encounter any problems when using our products, we will respond in time and provide solutions.

Do you accept international orders?

Yes, we accept international orders and can provide global logistics and transportation services.

How can I contact you?

You can contact us through our official website, e-mail, telephone or fax. Our contact information can be found on our website.

What metal materials does your company provide?

Our company provides all kinds of metal materials, including but not limited to steel, aluminum, copper, titanium, nickel, zinc and so on. Specific products and specifications can be found in our product catalogue.