Black Seamless Nipple

In the surface treatment stage of the production process,some surface treatment methods for Black Seamless Nipples have been mentioned.Below is a detailed explanation for you:

Oil and rust removal:This is the basic step of surface treatment.Soaking and spraying Black Seamless Nipples with chemical degreasers or alkaline solutions can effectively dissolve and remove surface oil stains.Rust removal can be achieved through acid washing,which involves a chemical reaction between the acid solution and the rust to dissolve it;Shot blasting is the process of using high-speed projectiles to impact the surface of a joint,removing rust and impurities while achieving a certain degree of roughness on the surface;Sandblasting is powered by compressed air,which sprays abrasive at high speed onto the surface of the joint to achieve the purpose of rust removal and roughening the surface.These operations can provide a good foundation for subsequent protective treatment.

Painting:Painting is a common method of rust prevention.Primer can enhance the adhesion between the coating and the metal surface,intermediate paint can increase the coating thickness and improve protective performance,while topcoat plays a decorative and protective role,resisting external environmental erosion.For example,for Black Seamless Nipples used outdoors,acrylic paint with good weather resistance can be selected and coated with primer,intermediate paint,and topcoat to ensure that the coating thickness and adhesion meet the standards.

Galvanization:divided into hot-dip galvanizing and electroplating galvanizing.Hot dip galvanizing is the process of immersing Black Seamless Nipples in molten zinc solution to form an alloy layer and a pure zinc layer between the zinc layer and carbon steel.It has strong protective properties and is commonly used in applications that require high corrosion resistance,such as pipe connections in industries such as construction and power,but the surface is relatively rough.Electrogalvanizing is the process of depositing a uniform layer of zinc on the surface of a joint through electrolysis.It has good surface quality and is suitable for products that require high appearance but relatively low protective performance,such as small decorative pipe fittings.

Blackening treatment:also known as bluing treatment,is the process of forming a black or blue black oxide film on the surface of Black Seamless Nipples under certain temperature and solution conditions.This oxide film can improve the corrosion resistance of the joint and endow it with certain decorative properties.It is commonly used in situations where there are certain requirements for appearance and the corrosive environment is not too strong,such as joints of some mechanical parts.During processing,it is necessary to strictly control the composition and temperature of the processing solution to ensure the quality of the oxide film.