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PIN-JACK Optronics Industrial Co., Ltd.
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1. Heating for a long time
2. Friction heating between screw tip and one-way ring is too much
3. Straightness on screw and barrel is not good enough |
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Pin Jack company focus on requirement of screw for plastic injection moulding machine and specially cooperated with Japanese technology for developing multi functional screw
both with wearing resistant and corrode resistant character. Among several metallic material available in the market, Pin-Jack company applies the most corrode-resistance material
plus Japanese surface treatment technology, Nitroflon and NPS coating, etc. combination, in order to reach wearing-resistant, corrode-resistant function.
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NPS Coating with surface hardness HV550.
Alloy film is for against chloride series gas and acid with excellent performance, in comparison to solution of hydrochloric acid dipping is acid-resisting 5 times higher than
electroless nickel film, meantime, it is also a even outstanding functional film.
Character :
1.
Excellent corrode-resistance, it performs outstanding result for corrode-resistant under chloride gas, sea
water, etc. condition.
2.
With even film, it is able to treat it evenly for the complicated shape.
3.
For high corroded mold, screw and mechanic components treatment, it is with excellent result performance.
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Comparison of Corrode-Resistance (dipped under 50% Sulfuric acid for 5 hours, changing for weight reduction) |
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3H |
5H |
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SUS304 |
3.3458
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5.3198
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NIP-10U |
1.7312
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4.8663
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NPS-5U |
0.0035 |
0.1260
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NPS-10U
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0.0041 |
0.1707
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Price |
Plastic applicable |
Manufacturing process |
Advantage |
Defect |
Wear-Resistant |
Corrode-Resistant |
Toughness |
Evaluation |
Remark |
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SCAM-645 Nitrided Screw |
low |
common plastic resin |
pre-harden first, then nitrided |
low price |
no corrode resistant |
average |
poor |
average |
cheap |
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SUS-420 Nitrided Screw |
medium |
corroded common plastic resin |
pre-harden first, then nitrided |
corrode resistant |
no corrode resistant |
poor |
average |
average |
average |
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SKD-61 Nitrided Screw |
low |
engineering plastic resin |
pre-harden first,
then nitrided |
good toughness
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no corrode resistant |
average |
poor |
average |
average |
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Bimetal Screw
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medium |
engineering plastic resin |
thread spray welding |
wearing resistant |
poor corrode resistan |
good |
poor |
average |
average |
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Bimetal Thermal Spray Coating Screw |
medium |
engineering plastic resin |
spray welding |
wearing resistant, corrode resistant
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easy to peel off |
good |
average |
average |
average |
suitable size more than diameter 30繪 |
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YPT-41 Screw
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high |
high wearing and corroded plastic resin |
fully harden steel machining |
wearing resistant, corrode resistant
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no corrode resistant for material without alkaline |
excellent |
average |
good |
excellent |
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SCAM-645 Nitrided + Nitroflon Screw |
low |
engineering plastic resin |
pre-harden first, then nitrided, finally plated with Nitroflon |
wearing resistant, corrode resistant
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average |
average |
average |
average |
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SKD-61 Nitrided + Nitroflon Screw |
low |
engineering plastic resin and corroded and wearing easily plastic resin |
pre-harden first, then nitrided, finally plated with Nitroflon |
wearing resistant, corrode resistant
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average |
average |
average |
average |
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KPS-6 Fully Hardened Steel + Nitroflon Screw
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medium |
high wearing and corroded engineering plastic resin |
heat treating after machining, straightening, then plated with Nitroflon |
wearing resistant, corrode resistant for raw material without alkaline |
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excellent |
excellent |
excellent |
excellent |
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Material |
Hardness |
Applicable Plastic Resin |
Coefficient of Thermal Expansion |
Bimetal Thickness |
Casting Method |
Wear-Resistant |
Corrosion Resistance |
Advantage Defect |
Evaluation |
Remark |
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Nitrided barrel |
surface nitrided on common steel |
HRC63簞
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common plastic resin |
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average |
poor |
cost lower but no corrode resistant |
average |
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Bimetal grade A barrel |
Ni.Co.Cr.Wc
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HRC60~66簞 |
engineering plastic added fiber glass more than 30% |
8.0~8.310-6
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eccentric casting method |
good |
good |
cost higher, good for wearing resistant and corrode resistant |
good |
May causes alloy layer character aging |
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Bimetal grade B barrel |
Ni.Cr.Si.B
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HRC60~62簞
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engineering plastic added fiber glass less than 30% |
2.4~11.910-6 |
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ccentric casting method |
medium |
medium |
cost higher, wearing resistant average, but poor corrode resistant |
average |
May causes alloy layer character aging |
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Bimetal grade C barrel |
Fe.Ni.Cu.B.Cr.Mo |
HRC62~68簞 |
engineering plastic added fiber glass less than 30% |
11.4~12.110-6
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eccentric casting method |
average |
average |
cost lower, badly wearing resistant and corrode resistant |
average |
May causes alloy layer character aging |
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TTB-712 barrel |
High strength Cr-V steel, nickel based alloy |
HRC60~66簞
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engineering plastic added fiber glass more than 30% |
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1.5~2.0
mm
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low heating fast melting |
excellent |
excellent |
wearing resistant, corrode resistant performance is excellent |
excellent |
hardness is equivalent to imported tungsten carbide |
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When you are installing barrel, caution that if central line between barrel mounting base and transmission
shaft of screw is on same straight line or not.
刪egularly to check if heater is working in good condition when you run barrel, screw in daily production.
伯efore you install new barrel, screw, firstly it is recommended to do test of air seal. |
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