stockpiled, dumped, and incinerated if desired,
resulting in severe pollution of soil and water
resources. Often found in underdeveloped areas.
There was a time when a number of environmental
problems arose in China due to the untimely
processing of the method, which caused inefficient
use of resources, low profits from processing, as well
as unbalanced development of industries. However,
green recycling benefits from recycling and reduce
environmental damage through technology
dismantling and maximizing management (Zhang,
2011).
Traditional automotive recycling is focused on
recycling raw materials, multi-components are
disposed of by destructive disassembly, resulting in
low reuse costs as dismantled components are simply
separated and reassembled without efficient
separation, where materials with high reusable value,
such as aluminium and magnesium, are waste, while
other materials that are not easily disposed of, such as
plastic, rubber, and waste oil, are stockpiled, dumped,
and incinerated if desired, resulting in severe
pollution of soil and water resources. Often found in
underdeveloped areas. There was a time when a
number of environmental problems arose in China
due to untimely recycling methods, which caused
inefficient use of resources, low profits from
recycling, and unbalanced development of industries.
However, green recycling benefits from recycle and
reduce environmental damage through disassembly
technology and maximizing management.
A car is an assembly of thousands of components
made from different materials. materials. Thus,
simple remelting has little to do with green scrap
recycling. a vehicle that requires scientific
approaches to disassemble them and handle them
accordingly.
The green recycling process in the automotive
industry includes acquisition, disassembly, cleaning,
testing and reuse, where the dismantling process
plays a vital role. In the US, car stripping was a large
industry that employed about 15,000 corporations
stripping components from vehicles, selling valuable
car parts to manufacturers for fixing and
refurbishment, and then reusing them. When the
valuable parts are dismantled, the car frames will be
smashed in the spray guns, after which the magnetic
separation is supplied to separate the steels.
The disassembly process of green recycling is
very important, whose recycling value can only be
illustrated after scientific disassembly with the
premise of reuse, rework, and regeneration of
component materials. In this section, the green
recycling of the automotive industry will be
introduced in terms of the dismantling and recycling
of materials.
There are 3 types of disassembly: complete
disassembly, partial disassembly, and target.
Complete disassembly means the careful
disassembly of a product into every detail of a
component, which is often used in theoretical
studies instead of practical applications.
Partial disassembly refers to the dismantling of
a portion of a product's components, usually out
of consideration for cost savings. When
dismantling a certain component, if the cost of
recycling the remaining components is less than
the cost of dismantling, we consider it useless
continue dismantling as recycled material; or
when the remaining components are in the same
materials, we stop disassembling and recycle
them entirely. This method is widely used in
practice.
Purposeful disassembly refers to dismantling
between or within certain components, mainly
due to reuse or environmental factors. For
example, the period of use of a product when its
component part has failed and requires
disassembly for repair or discard, while other
parts or components may still be useful for reuse
or replacement; or when the disposal of a part or
component causes great harm to the
environment, they should be considered as
target components to be disassembled. This
approach is also widely used in practice.
Disassembly level decisions depend on economic
evaluation. As the steps increase, the amount of
components received and recycled increases, which
leads to an increase in the profit from dismantling and
recycling, while the cost of the landfill decreases.
However, for the components are difficult to separate,
the processing profit is low, and then with low
economic value. Thus, when comparing the profit
from processing and the cost of dismantling, when the
economic effect decreases, the dismantling process
should be stopped (Li, 2021).
Let's start with the economics of dismantling the
product, the cost of recycling, and easily dismantled
components and equipment, when products are billed
with the premise of not affecting function during
design, aiming for fewer disassembly steps and fewer
connections for ease of disassembly, which is one of
the requirements of green design. Here, as we can see,
each process in "Green Production" is closely related
to each other, which reveals the integration of green
production (Flame Retardants, 2001).
Recycling at the level of parts and components
contributes greatly to environmental sustainability.