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Injection Screw & Barrel

Screw & Barrel For Injection Molding Machine

The normal material of Screw and Barrel:
Hardness after hardening and tempering:HB260°~320°
Nitrided Hardness:HV950°~1100°
Nitrided Depth:0.50~0.7mm
Nitrided Brittleness:above 2 stage
Surface Roughness:Ra0.4
Screw straightness:0.015mm
Hardess of surface chromium-plating after Nitriding:HV≥950HV
Chromium-plating Depth:0.05~0.10mm
ALLoy Depth:0.8~2.0mm
Alloy hardness:HRC56°~65°

Process specifications of screw and barrel:
25-38000KN clamping force
30g-50000g injection unit

Types of screw:
[For good plasticizing effect , we have different design of screw barrel to meet customer’s demand]
Gradual type, mutant type, wave type, barrier type, double screen type, shunt type, separation type,exhaust type, pin type, mixed type, double- head type, three-head type, multi head type etc.

Specification parameter:


 Amount of injecton(g)  Screw diameterXlength(mm)  Barrel diameterXlength(mm)  Amount of injection(g)  Screw diameterXlength(mm)  DiameterXlength(mm)
 30-90  Φ30x90  Φ85x860  800-1250  Φ75x1825  Φ170x1725
 60-125  Φ35x910  Φ85x860  1000-1500  Φ80x2000  Φ180x1805
 100-150  Φ38x935  Φ95x900  1250-2000  Φ85x2300  Φ190x1900
 125-160  Φ40x980  Φ95x910  2000-3000  Φ90x2700  Φ210x2000
 125-300  Φ42x1030  Φ105x8880  2500-5000  Φ100x2600  Φ230x2405
 250-400  Φ45x1210  Φ115x1165  3000-6000  Φ110x2600  Φ256x2590
 300-500  Φ50x1300  Φ125x1260  4000-10000  Φ120x2800  Φ256x2800
 450-600  Φ55x1335  Φ130x1320  6000-8000  Φ130x3010  Φ256x2970
 500-700  Φ56x1350  Φ130x1350  8000-10000  Φ145x3010  Φ256x3200
 500-700  Φ60x1380  Φ140x1350  10000-15000  Φ160x3500  Φ270x3200
 650-800  Φ65x1415  Φ150x1420  13000-25000  Φ170x3415  Φ317x3380
 700-1000  Φ70x1790  Φ160x1685      


Accessories of injection screw and barrel

Accessaries of screw and barrel for injection molding machines

(accessaries of screw and melt rubber tube,non-return valve, melt flange, nozzle, nozzle for nylon inside and outside the slingshot)

Material: tungsten alloy , SKD61,SACM645,SACM425,SACM440

Process mode: cast, quench, nitriding , nigrities
Range of work: inside diameter Ø16~Ø200
Effective length: 12000mm
Nitriding depth: 0.50mm~0.80mm
Quench hardness: HRC58-63
Straightness : 0.015mm/m
Thickness of chroming: 0.02mm~0.085mm
Apply to: ordinary plastic, PP、PE、ABS、AS、PS、etc.

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