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Material accuracy and use of plastic balls

Update:15-06-2019
Summary:

Injection into a billet → light ball → grinding ball → […]

Injection into a billet → light ball → grinding ball → fine grinding → polishing → sorting → packaging
POM Ball ( POM plastic ball )
POM plastic balls are widely used in cosmetics, sprayers, guide rails, hardware machinery and other products.
Properties: smooth, shiny, hard and dense material, yellowish or white.
Features: Wear resistance and self-lubricity are also superior to most engineering plastics, and have good oil and peroxide resistance. Not resistant to acid, not resistant to strong alkali and ultraviolet radiation.
Can do the accuracy level: G0-G4
Specifications: 1mm - 63.5mm
 
PP (polypropylene) plastic ball
PP (polypropylene) plastic balls are widely used in cosmetic balls, medical equipment, environmental protection equipment and other products.
Properties: Polypropylene plastic is the lowest density of general-purpose plastics. It is a milky white high crystalline polymer, non-toxic and tasteless.
Features: good mechanical properties, good rigidity, wear resistance, high hardness; good heat resistance, poor cold resistance; no water absorption, good chemical stability, but not resistant to sunlight, poor thermal stability; flammable, burning There is a smell of petroleum; good electrical insulation, voltage resistance; transparent film, poor penetration of air and water vapor; good for forming film, silk and other products, but poor dyeing, printing and adhesion.
Can do the accuracy level: G0-G4
Specifications: 1mm - 63.5mm
 
Nylon PA6
Nylon PA6 is widely used in industrial manufacturing, hardware machinery, aerospace, aviation and other products.
Properties: Translucent or opaque milky white crystalline polymer.
Features: thermoplastic, lightweight, toughness, chemical and durability resistance, good wear resistance, self-lubricating and solvent resistance.
Can do the accuracy level: G0-G4
Specifications: 1mm - 63.5mm
 
Tetrafluorosphere (PTFE6)
PTFE ball (PTFE6) is widely used in military products such as chemical pumps, oilfield pumps, nuclear power, aerospace, and aviation.
Properties: PTFE is a white opaque waxy powder with a density of 2.14~2.20g./cm3.
Features: high temperature resistance - long-term use temperature 200~260 degrees, low temperature resistance - still soft at -100 degrees; corrosion resistant - resistant to aqua regia and all organic solvents; weather resistant - best aging life in plastic; high lubrication - with The smallest coefficient of friction in plastics (0.04); non-tacky - has the smallest surface tension in solid materials without adhering to any substance; non-toxic - physiologically inert.
Can do the accuracy level: G0-G4
Specifications: 1mm - 63.5mm