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Barrel and Screw

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SCREW & BARREL

Barrel and Screw

Screw

We develop and product single screws and twin-screw, their diameter ranges up to 132mm and their length to 3700mm. We only use material that imported from Germany or Japan once the geometry has been determined. The screws are produced by the following individual processes.

The blanks are prepared and annealed.

Modern CNC-lathers ensure a high degree of constant quality.

Well-Proven special boring systems are used for producing the cooling channels.

The screw geometry is milled out by computer numerical controlled machines.

Before they undergo heat treatment, the workpiece are checked for warppage. Deviations are corrected immediately.

The screw flights are polished by several stages, surface roughness below Ra 0.8 g m.

An acceptance report is written out of each screw during final inspection.


Screw straightness	Finishing of the screw flights on a CNC thread milling machine	Screw roughness test

TYPE	Outside Diameter	Length
Single Screw	φ30 ~ φ370mm	5000mm
Twin Screw	φ30 ~ φ150mm	5000mm

Barrel

One programmed comprises barrels of diameter up to 132mm and length of up to 4000mm, we use material that imported for Germany or Japan. We supply barrels for single-screw or twin-screw that are produced by the following individual processes.

Precise positioning of the barrel bores. The latest special boring machines are employed.

Finishing the bore of barrel by CNC lathe.

Highest surface quality through honing of the barrel bores.

Even the most difficult shapes can be machined to accept finishes on CNC machines.

Highest wear-resistance is obtained by deep Nitriding of the barred bores.

Completed barrel is checked by gauging machine before delivery.

An acceptance report is written out of each barrel during final inspection.


Producing the twin-barrel on a special boring machine	Finishing a twin-barrel on a lathe	Special boring machine

TYPE	Outside Diameter	Length
Single Hole Barrel	φ50 ~ φ370mm	5000mm
Twin Hole Barrel	φ30 ~ φ150mm	4000mm

Service for Screw & Barrel

1997 the latest generation of CNC Milling & Drilling machine form German Waldrich Coburg processing is proved to be constant the quality to suit all your requirement.

Adequate screw processing with advanced Twin Screw Milling Machine to optimize. the screw geometry.

Test plant production with suitable suggestion of screw geometry design for better performance of the processing unit.

All materials are imported from German or Japan for quality and proved by original.

All type of Twin Screw & Barrels are available for order from our experienced technicians in processing.

Running hour's guarantee and fast delivery time will be able to fill your orders.


Preview the flight of the screw geometry	Computer-aided design of the screw geometry	CNC thread milling machine

PROCESSING RANGE		Material	Nitrided Steel JIS SACM 645 or DIN 34 CrAlNi 7
Outside Diameter	φ30 ~ φ370mm	Surface Roughness	Screw: Ra 0.8 µm Barrel: Ra 0.4 µm
Length	500 ~ 5000mm	Straightness	0.05mm
Lead	0 ~ 1000mm	Treatment	Long time gas Nitrided or Ion Nitrided
Type	Single Screw	Surface Hardness	HCR 65 < ( HV900 <)
Type	Twin Screw	Depth of Hardening	0.6mm