Cradle to Consumer
Identity ID
3327a37b-1aa2-4970-99c0-eee2c3559df3
Materials
Associated ID
7bd3724b-75a4-4ab3-90e0-b595848fe2d8
Included activities starts
Included activities ends
Description
This dataset is a market dataset representing the consumption market of the region. The dataset includes the transport of the product from the gate to the consumer, with the transport service calculated according to the transport situation of this product in the region. Brass is a copper-zinc alloy with zinc as the main added element, with a copper content of 63.5%-65%, zinc as the balance, and trace amounts of lead, iron and other elements, suitable for machining high-precision parts on automatic lathes. The dataset covers the main raw and auxiliary materials, energy consumption, waste treatment and related atmospheric emissions in the brass strip production process, but does not include the production of transport equipment and the direct or indirect greenhouse gas emissions caused by personnel travel and daily office work during production. The data inventory is integrated from multiple sources and has been revised according to expert opinions and the best available information.
Activity Description
Brass is a copper-zinc alloy with zinc as the main added element. It contains 63.5%-65% copper, zinc is the balance, and contains trace amounts of lead, iron and other elements. This data set includes the raw material acquisition stage, processing and production stage. When producing brass belt products, scraps are generated, which are usually collected and reused. The production process includes the following links:
(1) Semi-continuous casting
Raw materials such as corner materials and electrolytic plates are put into the smelting furnace and melted under the action of electromagnetic induction heating. The copper melt solidifies into a solid billet through a water-cooled crystallizer.
(2) Hot rolling
After the produced semi-continuous casting billet is heated to the temperature required by the process through a walking heating furnace, it is rolled through a high-pressure hot rolling mill to obtain a strip with a thickness and width that meet the accuracy requirements.
(3) Milling
The hot-rolled blank is face milled through a milling cutter to eliminate the surface oxide layer.
(4) Rough rolling
The raw material is subjected to preliminary rolling and plastic processing to achieve the required width and thickness.
(5) Thick cut
The thick-cut process is used to slit the strip to the required width and re-curl it.
(6) Bell furnace annealing
A bell-type annealing furnace is used to uniformly anneal the copper strip cast billet, reducing or eliminating the segregation of the chemical composition and microstructure of the cast billet to make the quality more stable.
(7) Pickling
After annealing, the blank is pickled, cleaned, fine brushed and passivated to ensure the surface cleanliness and brightness of the strip.
(8) Finish rolling
The data set includes raw material acquisition, production energy consumption, auxiliary materials, packaging, waste treatment and other link consumption.
Process Description
Brass is an alloy composed of copper and zinc. Brass composed of copper and zinc is called ordinary brass. If it is a multiple alloy composed of two or more elements, it is called special brass. C2680 brass strip (also known as H65 high-precision brass strip) is a copper-zinc alloy with zinc as the main added element. It contains 63.5%-65% copper, zinc is the balance, and contains trace amounts of lead, iron and other elements. The alloy has high plasticity, excellent ductility and corrosion resistance, with a tensile strength of ≥29MPa and an elongation of ≥40%. Its properties can be optimized through thermal processing at 750-830°C and annealing at 520-650°C. The conventional thickness of the product is 0.01-2.0mm, the width is 2-600mm, covering various hardness levels from O to SH, and is suitable for automatic lathe processing of high-precision parts. It has outstanding cold working properties and is widely used in the manufacture of air conditioning connecting pipes, battery shrapnel, valves and other components, and is used in electrical and thermal conductive components in the electronics industry.
Time period
2020
2026
Geography
China,Zhejiang
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology