Specifications

Lead extruder is used to extrude lead sheathing to cables continuously or vulcanize rubber tube
lead extruding machine lead

 

1.      Application and Features

-       This machine is used to apply lead sheathing to cables or vulcanize rubber tube for the production of cables.

-          Outer diameter of lead layer can be made between dia.30 and dia.100mm, to be achieved by two sets of extruding modules, one at diameter of dia.30~dia.70mm, another one at dia.40~dia.100mm. Users can choose either of them.

-          With a screw to feed lead, it is possible to achieve continuous extrusion, so thickness of lead layer keeps constant and even in longitudinal direction.

-          In addition, unique design for strict control of temperature in every section makes temperature and extrusion pressure constant at each section. Thus thickness of lead layer can be controlled within a minimal common difference.

-          Consumption of lead is 10% less than that of intermittent lead pressing machine.

-          Environment friendly design. The melting furnace, the purifying & holding furnace, and lead conveyor all work in an enclosed system. In addition, as temperature of molten lead is relatively low, distribution of steam is greatly minimized.

-          A small area is needed for the machine, which is easy to operate, low in labor intensity, as only two operators are needed for the machine.

 

2.      Specifications

2.1. Extruding screw

-          Diameter: 150mm

-          Rotation speed: 5~15rpm

2.2. Lead output

-          Pure lead: 20~25kg/min.

-          Soft alloy lead: 16~18kg/min.

-          Hard alloy lead 15~16kg/min.

2.3. Diameter of lead pipe

-          Die holder No. 1: 30~75mm

-          Die holder No. 2: 30~100mm

2.4. Melting furnace

-          Capacity: 18 tons

-          Power: 141.1kW

2.5. Purifying & holding furnace

-          Capacity: 10 tons

-          Power: 101.1kW

2.6. Cooling water consumption: 6.8 ton/hr.

2.7. Total power of extruder: 145kW

2.8. Lead stripper

-          Vertical type

-          Power: 15kW

2.9. Lead flake conveyor

-          Power: 1.5kW

2.10. Take-up drum size: PN1250~PN2500

2.11. Space required: 22000x13340x5100mm

2.12. Power supply: 380V, 3-phase, 50Hz, AC

 

3.      Materials Processed

3.1. Pure lead, and alloy lead

3.2. Suitable alloy lead as follows:

-          Pb-Sb alloy: Sb 0.5%~0.6%

-          Pb-Sn-Sb alloy: Sn 0.4~ Sb 0.2%

-          Pb-Sb-Cu alloy: Sb 0.04%, Cu 0.04%

-          Pb-Sn-Cd alloy: Sn 0.2%, Cd 0.075%

3.3. As the product is extruded lead tube, alloy elements are distributed evenly, so the quality of lead extrusion is good, it is therefore not necessary to increase the content of antimony (Sb) in lead alloy.

3.4. Please note that lead alloy with antimony over 0.6% is not allowed due to the limitation of the technical process and the difference in the construction of the machine.

 

4.      Output Capacity

 

Lead Type	Screw Rotation Speed (rpm)	Extrusion Output (kg/min)
Pure lead	13~15	20~25
Soft lead alloy	11~12	16~18
Hard lead alloy	9~10	15~16