Introduction To Blackening Of 4 Prongs T Nuts

Black treatment of 4 prongs T nut is a kind of technology for surface treatment of hardware fasteners. Customers choose the surface treatment requirements of 4 prongs T nuts according to the needs of product installation, such as exposed aesthetics, color difference requirements, etc., such as whether galvanized, nickel-plated, black zinc-plated or is it black.

As a professional four-prong T nut manufacturer, Xinchi is pleased to introduce the four-claw nut blackening treatment process flow.

The surface of the steel is blackened, and it is also called blue. The principle is to rapidly oxidize the surface of steel products to form a dense oxide film protective layer. Blackening treatment is now a commonly used method of traditional alkaline heating blackening and the emergence of late room temperature blackening two kinds. ?

Benefits of blackening of 4 prongs T nuts

Blackening safety does not use electricity, with alkaline high-temperature blackening needing 100% electricity.

Improve working efficiency: it takes 1-2 minutes.

It has a low blackening cost, simple equipment, and easy operation. The blackening time is strictly controlled.

Strong process adaptability: solve the problem of ductile iron not being black. Blackened for wear and rust.

The steps of the normal temperature blackening process

The utility model relates to a normal temperature blackening treatment process, which is mainly completed by the following process steps:

1) Cleaning;

2) degreasing: the workpiece must be completely immersed in degreasing liquid; Degreasing solution concentration pH value 12-14, treatment time 10-30min, every 3-5 minutes up and down shake several times, the liquid concentration is lower than pH12 to add defat powder;

3) Water washing;

4) Pickling: pickling solution concentration ph 2-4, treatment time 5-10min;

5) Water washing;

6) Blackening: pool liquid concentration pH value 2.5-3.5, treatment time 10-12min;

7) Water washing;

8) Blow dry;

9) Apply oil.

XINCHI is a trustworthy fastener company, especially in furniture nuts. We have a factory,  founded in 2007. And we are the designated fastener supplier to“STAPLE”. As a trusted fastener supplier,  XINCHI can offer a wide range of high-quality fasteners, including nuts, screws, bolts, rivets, washers, etc. If you want to know more about fasteners or want to wholesale fasteners, please feel free to contact us. And then our experienced and expert service team will reply to you as soon as possible.