In the field of industrial fastening, Black Oxide Thread Rods have become an ideal choice for dealing with complex environments such as humidity and dust due to their unique surface treatment process and reliable performance, playing an important fastening role in many industrial scenarios.

The most notable feature of Black Oxide Thread Rods is their special surface treatment process

By placing високоміцні різьбові стрижні in a high-temperature alkaline oxidation solution for chemical reaction, a dense black oxide film is formed on their surface. This oxide film not only gives the screw a unique black appearance, but more importantly, it can effectively isolate air, moisture, and other corrosive media, providing reliable anti-corrosion protection for the screw. At the same time, after blackening treatment, the hardness of the screw surface has been improved, and its wear resistance has also been enhanced, extending its service life.

The material and process selection of Black Oxide Thread Rods directly affect their performance

In terms of material, high-quality medium carbon steel or alloy steel is usually used as the base material for стрижні з вуглецевої сталі. These materials themselves have good strength and toughness, and can meet the fastening needs under different working conditions. In terms of craftsmanship, in addition to the core blackening process, it also includes pre rust removal, degreasing treatment, and post oil immersion sealing treatment. Pre treatment ensures the cleanliness of the screw surface and creates favorable conditions for the formation of oxide film; The later oil immersion further enhances the sealing of the oxide film and improves the anti-corrosion effect.

The application scenarios of Black Oxide Thread Rods are very extensive

In the mechanical manufacturing industry, it is commonly used for fixing and connecting equipment such as machine tools and molds. Its anti-corrosion performance can ensure that the equipment is not easily rusted during long-term use and maintain the fastening effect; In the field of architecture, it is suitable for fastening outdoor steel structures, which can resist wind and rain erosion and ensure the stability of the structure; In automobile manufacturing, it can be used for connecting components such as chassis and engine to cope with the complex environment during vehicle operation. In addition, стрижні з вуглецевої сталі also occupy a place in the fields of agricultural machinery, medical equipment, etc. due to their reliable performance.

With the development of industrial technology, the process of Black Oxide Thread Rods is constantly being optimized

The new environmentally friendly blackening treatment solution is gradually replacing traditional high pollution solutions, reducing the harm to the environment while ensuring the anti-corrosion effect; The introduction of automated production lines has improved the efficiency and consistency of blackening treatment, ensuring the stable quality of each screw rod; At the same time, targeted blackening treatment processes have been developed to meet the special needs of different industries, such as high-temperature resistant blackening treatment, high wear-resistant blackening treatment, etc., further expanding their application scope.

In summary, Різьбові шпильки DIN975 occupy an important position in the industrial fastening field due to their excellent anti-corrosion performance, reliable material technology, wide application scenarios, and continuous technological innovation. Although it may seem ordinary, it ensures the stable operation of various equipment and structures with its solid fastening ability. In the future, with the continuous improvement of fastening component requirements in various industries, Black Oxide Thread Rods will continue to be upgraded and perfected to provide more reliable support for industrial development.

Black Oxide Thread Rods  FAQs

What is Black Oxide Thread Rod?  

Black Oxide Thread Rods are metal screws that have undergone surface black oxidation treatment, forming a black oxide film on the surface through chemical or electrochemical processes. This layer of film can enhance rust prevention ability and reduce reflection, while maintaining the original dimensional accuracy.   

What are the advantages of processing Black Oxide Thread Rods?  

Corrosion resistance: More resistant to corrosion than ordinary steel threaded rods.   

Aesthetic: The matte black appearance is suitable for concealed or industrial scenes.   

Low cost: Compared to galvanized or stainless steel, the price is more competitive.   

Maintain thread accuracy: The processing process hardly changes the part size.   

What are the drawbacks of Black Oxide Thread Rods? 

The rust prevention performance is weaker than that of galvanized or stainless steel, and additional protection is still required when exposed to humid environments for a long time.   

The black oxide film may peel off due to friction or impact, affecting its appearance.   

In which fields are Black Oxide Thread Rods commonly used? 

Mainly used in situations where rust prevention requirements are not high or where a low-key appearance is needed, such as:

Building structure fastening

Mechanical equipment assembly

Furniture manufacturing

Automotive components (non core parts)

How to distinguish Black Oxide Thread Rods from galvanized threaded rods?  

Appearance: Black oxide to uniform matte black, galvanized to silver gray or colored (such as blue and white passivation).   

Texture: The black oxidized surface is more delicate, while the galvanized surface may be smoother or have a coating feel.   

Magnetic testing: Both are usually magnetic, but stainless steel threaded rods are non-magnetic (if distinction is needed).