Copper sleeves, also known as copper bearings, are made of various
copper alloys and are usually used to lubricate mechanical parts. There
are many types of copper caps. They are self-lubricating copper caps.
There is no need to oil the copper caps. There are also graphite copper
caps that need to be oiled. Commonly used materials produced are tin
bronze, aluminum bronze, brass, lead bronze and so on.
Classification of copper-based alloys
Brass: Brass is an alloy of copper and zinc. Brass composed of copper
and zinc is called ordinary brass. An alloy composed of two or more
elements is called special brass. The brass sleeve has strong wear
resistance.
Special brass
is also called special brass, which has the characteristics of high
strength, high hardness, and strong chemical resistance. There are also
outstanding processing machinery performance. The seamless copper tube
made of brass is soft and durable.
Brass seamless pipes can be used for heat exchangers and condensers,
cryogenic pipelines, and submarine pipelines. Manufacturing of plates,
bars, bars, pipes, castings, etc. Copper in 62% ~ 68%, strong plastic,
manufacturing pressure equipment.
Tin bronze: Tin content is 3 ~ 14%, mainly used to make elastic
components and wear-resistant parts. The alloy has high mechanical
properties, anti-wear properties and corrosion resistance, easy cutting,
good brazing performance, small shrinkage, and non-magnetic.
The tin bronze sheath has strong corrosion resistance in the
atmosphere, sea water, fresh water and steam, and is widely used in
steam boilers and marine parts. It is also widely used in electrical,
light industry, machinery manufacturing, construction industry, defense
industry and other fields.
Aluminum bronze: The content of aluminum generally does not exceed
11.5%, and sometimes an appropriate amount of iron, nickel, manganese
and other elements are added to further improve the performance of
aluminum bronze. Aluminum bronze can be strengthened by heat treatment.
Its strength is higher than tin bronze.
has high strength and good wear resistance. It is used for
high-strength screws, nuts, bushings, sealing rings and wear-resistant
parts. Its most prominent feature is its good wear resistance.
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