Vrei sa te Loghezi sau sa te Inregistrezi
CHAT | MESSENGER | ADAUGA BOOKMARK | GHID ASISTENTA | LIMBA:
 

JURNALE   SCRIE JURNAL   MODIFICA JURNALE  
 
RSS
Nbstarlite Specializes In Supplying Metal Stamping Parts
Adaugat pe 26/03/2020 04:20:16 de xinghui12

There
are many kinds of
Bakelite
Parts
,
which can be divided into thermosetting plastic parts and thermoplastic plastic
parts according to their different thermal properties.  Thermosetting plastics
refer to plastics that are not softened by heat but can only be molded once
after being cured once.  This kind of plastic has good heat resistance and is
not easy to deform under pressure, but its mechanical properties are poor. 
Thermoplastic refers to plastic that softens when heated, hardens when cooled,
softens again when heated, hardens again when cooled, and can be repeatedly
heated and remanufactured many times.  This kind of plastic is easy to process
and form and has good mechanical properties, but its heat resistance is
relatively poor and easy to deform.  The quantity of thermoplastic plastics is
very large, accounting for about 80% of all plastics.


1.
Check IS0 code on plastic parts: plastic parts produced by regular manufacturers
will be printed with ISO international symbol mark, namely plastic code, on the
back of the workpiece.


2.
Check the maintenance manual: you can also find the body maintenance manual and
check the plastic types of components.


3.
Identification of combustion


Cut
off a small piece of plastic, clamp it in the fire with tweezers and burn it,
check its flame color, burning condition and smell.  For example, PVC plastic is
easy to melt when heated, and the flame is green or cyan when burning, with
hydrochloric acid taste.  The flame of polyolefin plastics when burning has no
obvious smoke and has the smell of wax.  Polyester cellulose plastic has acetic
acid taste after ignition.  When ABS plastic burns, there is obvious smoke
generation.


4.
Welding method


With
different types of plastic welding rod and plastic for trial welding, can be
welded with this type of welding rod type of plastic varieties.


5.
Percussion


The
sound of PU plastic is weaker and that of PP plastic is brittle when the inner
side of plastic products is knocked by hand.


6.
Other simple identification methods


  PU plastic has no powder after sandpaper polishing, while PP
plastic has powder.  PU plastic is easy to scratch, PP plastic is not easy to
scratch, etc.



Nbstarlite
is a professional mechanical equipment design and supplier. Our
Metal
Stamping Parts
 have
won the favor and love of the vast number of consumers in the market. If you
also have this demand, please leave us a message and let our profession give you
a rest assured and guarantee.

Tag-uri: Metal Stamping Parts, Bakelite Parts





Site in reteaua NewAge NETWORK | Gazduire: NetSONIC | Dezvoltare WEB: NewAge MEDIA
Cea mai buna oferta de
internet | Internet Sector 1, Sector 6, Grivita, 1Mai, Ion MihalacheHitStation.Ro - Muzica noua actualizata zilnic

Jocuri Barbie Galerie foto - Roportal Adauga site in top online Linkuri impartite pe categorii