THE MANUFACTURING PROCESS OF ZINC ALLOY DOOR HANDLES

We are using the door lock every single day. However, have you ever wondered how the manufacturer makes them? This article will share with you some interesting information about the manufacturing process of VICKINI’s zinc alloy door handles.

• Casting and Molding: Zinc and other metals, nonmetals (referred to as billet) must first be heated to 800 °F (~425°C) in a gas-fired furnace to soften the metal. The billet is then placed in a specially designed set of steel dies that are shaped to the product being made. A press applies high pressure to force the heated billet into the die cavity, where the billet takes the shape of the door handle. After that, the door handles will be ejected from the press and will be cooled. 
• Coining and polishing: during process, the door handle goes through a series of finishing steps.  Separate coining, milling, drilling, and polishing processes are applied to remove heat scale produced during the casting process and produce a smooth surface ready for the polishing operation.
• Metal plating: is a manufacturing process in which a thin layer of metal coats a substrate to create varying in luster, hue and improved corrosion resistance. There are many metals used in plating such as nickel, chrome, copper… The door handles are put into a plating bath – which consists of the metal ionic solution and various chemicals that facilitate plating processes. An electrical current is used to deposit metal ions onto the surface of the substrate. Upon completion of the electrodeposition process, the door handles are ready for post-treatment remove any remaining contaminants and plating bath remnants.
• Quality Control: Various process parameters throughout the manufacturing process are monitored and controlled to ensure the final product meets quality standards. The finished door handles are inspected for dimensions, surface finish, and other properties. Some of these properties may have to conform to certain specifications of the door.
• Assembling and packaging: When all the parts are ready, people will assemble the door lock by hand. Finally, the workers package the completed door locks and box them for shipment.

Visit our website https://vickini.com/en/rosette-locks.html for more details about VICKINI’s zinc alloy door handles.