The KITZ Group operates a brass bar manufacturing business, manufacturing and selling brass bars and other fabricated brass products (cut and forged brass products). Brass bars are widely utilized for machines, construction materials and other applications.
What is Brass?
Brass is an alloy of copper (Cu) and zinc (Zn). Modifying the percentages of copper and zinc contained in the alloy and adding various other metallic elements makes it possible to produce numerous superb characteristics, such as electrical and thermal conductivity, corrosion resistance, plastic workability and machinability.
Brass Bar Manufacturing Business
KITZ Metal Works Corporation supplies the materials for brass valves, which are one of the KITZ Group's mainstay products. It also manufactures and sells high-quality brass bars and fabricated items, which are used widely as materials for faucet metal fittings, and components in gas supply equipment, home appliances and auto parts. With the addition of Hokutoh Giken Kogyo Corporation (which manufactures machined and fabricated products) to the KITZ Group in July 2015, and with the commencement of operations at a new plant consolidating the KITZ Group's brass machining and forging processes in May 2016, KITZ Metal Works is also expanding its business operations.
Development of Environmentally Friendly New Materials
Utilizing the alloy technology that it has developed over many years, KITZ Metal Works actively works to develop new materials that are friendly to people and to the environment, and that meet various regulations. These include dezincification corrosion-resistant brass bars, lead-free brass bars and cadmium-free brass bars. In March 2019, KITZ Metal Works developed and launched sales of the RC Metal bismuth-type highly corrosion-resistant lead-free brass bar, the RN Metal bismuth-type ultra-free-cutting lead-free brass bar and the new CD50 cadmium-free brass bar, which comply with environmental regulations.
Upgrading and Replacing Production Equipment
A portion of KITZ Metal Works' manufacturing equipment was facing issues such as growing maintenance costs due to aging, as well as a decline in productivity. In order to resolve these issues and enhance its manufacturing capabilities, KITZ Metal Works is proceeding with the construction of a new plant, and the upgrade and/or replacement of its production equipment. Moving forward, by seeking to increase productivity and improve the quality of its products, the company will continue to cater further to the needs of customers through the stable supply of environmentally -friendly materials, for which growth in demand is expected in the future.
Brass Bar Manufacturing Process
|❶Raw material composition and melting of raw materials
The raw materials are melted in an induction furnace.
The molten alloy is cast into large ingots (called "slabs" or "cakes") using either a water-cooled horizontal continuous casting machine or a vertical semi-continuous casting machine.
The slabs are cut into billets (intermediate products) of predetermined length ready for extrusion, using a large-scale cutting machine.
|❹Heating and extrusion
The billets are heated to the prescribed temperature, and extruded into rods or coils using an extruder.
Oxides that have become attached to the surface of the alloy during the extrusion processes are removed by pickling.
The rods and/or coils are passed through the die of a drawing machine to finish them into brass bars with accurate shapes and dimensions.
|❼Straightening and cutting
Bends or curvature in the bars are straightened out using a straightener. The bars are then cut to the prescribed length.
The bars are subjected to low-temperature annealing at the prescribed temperature in order to remove residual stress and to adjust their hardness.
|❾Measurement, packing and shipping
Completed bars are bundled and packed to the prescribed weight and/or quantity, before being delivered to customers.