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Technical experts debug and analyze hot air box silicone rubber extruders

 Last Update: 2022-11-18
 Source: Internet
 Author: User

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rapid rsv test

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First, the production of 185mm2 (the nominal diameter of the tight conductor is 16mm) silicone rubber insulation, the insulation thickness is 2mm
.

Insulating material: ordinary silicone rubber, vulcanizing agent: double two four vulcanizing agent

Mold (mold core: 16.
8mm, mold sleeve: 20mm)

Programme 1

Temperature control:

Wenji Zone 1	Warm zone 2	Warm zone 3	Warm Zone 4	Warm zone 5	Warm zone 6	Warm zone 7	Wenji Zone 8	Wenji Zone 9	Warm zone 10
320	320	320	320	320	320	270	100	100	100

The front and rear traction gears are 2 gears, the rear traction gain is 0.
95, and the torque is set to 80%

At a linear speed of 2.
5m/min, about 5 meters, the insulation layer has been completely vulcanized
.

Sample (1) Test data: tensile strength before aging is 7.
5MPa Elongation at break is 308% (qualified)

Programme 2

Temperature control:

Wenji Zone 1	Warm zone 2	Warm zone 3	Warm Zone 4	Warm zone 5	Warm zone 6	Warm zone 7	Wenji Zone 8	Wenji Zone 9	Warm zone 10
290	290	290	290	290	290	270	100	100	100

The front and rear traction gears are 2 gears, the rear traction gain is 0.
95, and the torque is set to 75%

At a linear speed of 2.
5m/min, about 5 meters, the insulation layer has been vulcanized
.

Sample (2) test data: tensile strength before aging 8.
9MPa Elongation at break 374% (qualified)

Programme 3

Temperature control:

Wenji Zone 1	Warm zone 2	Warm zone 3	Warm Zone 4	Warm zone 5	Warm zone 6	Warm zone 7	Wenji Zone 8	Wenji Zone 9	Warm zone 10
270	270	270	270	270	270	270	100	100	100

The front and rear traction gears are 2 gears, the rear traction gain is 0.
95, and the torque is set to 90%

At a linear speed of 5.
5 m/min, about 11 meters, the insulation layer has been basically vulcanized
.

Sample (3) test data: tensile strength before aging is 7.
4MPa Elongation at break 354% (qualified)

Programme 4

Temperature control:

Wenji Zone 1	Warm zone 2	Warm zone 3	Warm Zone 4	Warm zone 5	Warm zone 6	Warm zone 7	Wenji Zone 8	Wenji Zone 9	Warm zone 10
300	300	300	300	300	300	270	100	100	100

The front and rear traction gears are 2 gears, the rear traction gain is 0.
95, and the torque is set to 90%

When the linear speed is 9m/min, it is severely flattened at the 12-meter guide wheel, and the insulation layer is not completely vulcanized
.

Sample (4) test data: tensile strength before aging is 8.
1MPa Elongation at break is 364% (qualified)

Programme 5

Temperature controlled °C

Wenji Zone 1	Warm zone 2	Warm zone 3	Warm Zone 4	Warm zone 5	Warm zone 6	Warm zone 7	Wenji Zone 8	Wenji Zone 9	Warm zone 10
320	320	320	320	320	320	270	100	100	100

The front and rear traction gears are 2 gears, the rear traction gain is 0.
95, and the torque is set to 90%

When the linear speed is 7m/min, there is no flattening phenomenon at the 12-meter guide wheel, and the insulation layer is basically vulcanized
.

Sample (5) test data: tensile strength before aging is 7.
8MPa Elongation at break is 343% (qualified)

Programme 6

Temperature control:

Wenji Zone 1	Wenji Zone 2	Wenji Zone 3	Wenji Zone 4	Wenji Zone 5	Wenji Zone 6	Wenji Zone 7	Wenji Zone 8	Wenji Zone 9	Wenji Zone 10
340	340	340	340	340	340	270	100	100	100

The front and rear traction gears are 2 gears, the rear traction gain is 0.
95, and the torque is set to 95%

When the linear speed is 8m/min, there is no flattening phenomenon at the 12-meter guide wheel, and the insulation layer is well vulcanized
.

Sample (6) test data: tensile strength before aging is 7.
2MPa Elongation at break 303% (qualified)

From the 6 sets of test data, it can be concluded that in the case of high or low temperature, the degree of vulcanization can meet the process requirements (tensile strength before aging is 5.
0MPa elongation at break is 150%), but the temperature of each zone should be increased correspondingly while the linear speed is increased, so as to avoid insufficient vulcanization in the 12-meter guide wheel under excessive force flattening phenomenon, in the case of gradual increase in the linear speed in the production process, the torque setting is also increased accordingly to ensure that the wire core will not cause the surface bamboo phenomenon due to jitter
。

Second, the production of silicone rubber sheath with a cable core of 52mm, the thickness of the sheath is 4mm
.

Insulating material: ordinary silicone rubber, vulcanizing agent: double two four vulcanizing agent

Mold (mold core: 53.
5mm, mold sleeve: 60.
5mm)

scheme

Initial temperature °C:

Wenji Zone 1	Wenji Zone 2	Wenji Zone 3	Wenji Zone 4	Wenji Zone 5	Wenji Zone 6	Wenji Zone 7	Wenji Zone 8	Wenji Zone 9	Wenji Zone 10
370	370	370	370	370	370	270	100	100	100

The front and rear traction gears are 2 gears, the rear traction gain is 0.
94, and the torque is set to 100%

When the linear speed is 2m/min, about 8 meters, the sheath layer has been completely vulcanized and persulfurized
.

When the linear speed rises to 3m/min, at 8 meters, the sheath layer is basically vulcanized, and slightly sulfurized
.

Adjust the temperature °C:

Wenji Zone 1	Wenji Zone 2	Wenji Zone 3	Wenji Zone 4	Wenji Zone 5	Wenji Zone 6	Wenji Zone 7	Wenji Zone 8	Wenji Zone 9	Wenji Zone 10
330	330	330	330	330	330	270	100	100	100

The front and rear traction gears are 2 gears, the rear traction gain is 0.
94, and the torque is set to 100%

When the linear speed is 4m/min, the speed of the main engine is 1200r/min, and the sheath layer is well vulcanized, but at about 60m, the internal material of the main engine is severely scorched, and the material is pre-crosslinked
.

When producing this sheath, when the linear speed rises to 4m/min, the speed of the main machine reaches 1200r/min, which basically reaches its limit, the shear force of the rubber in the barrel is greatly increased, the water circulation cooling effect is not good, the temperature of the host rises rapidly, resulting in pre-crosslinking of the rubber, so the production of such sheaths can only sacrifice the linear speed to reduce the speed of the host, reduce the shear force of the rubber in the barrel, so that the rubber will not be crosslinked prematurely to ensure the normal extrusion of the host; The root cause should be to improve the water circulation cooling conditions to maximize the capacity of this machine
.

First, the production of 185mm2 (the nominal diameter of the tight conductor is 16mm) silicone rubber insulation, the insulation thickness is 2mm
.

silastic

Insulating material: ordinary silicone rubber, vulcanizing agent: double two four vulcanizing agent

Mold (mold core: 16.
8mm, mold sleeve: 20mm)

Programme 1

Temperature control:

Wenji Zone 1	Wenji Zone 2	Wenji Zone 3	Wenji Zone 4	Wenji Zone 5	Wenji Zone 6	Wenji Zone 7	Wenji Zone 8	Wenji Zone 9	Wenji Zone 10
320	320	320	320	320	320	270	100	100	100

Wenji Zone 1

Wenji Zone 2

Wenji Zone 3

Wenji Zone 4

Wenji Zone 5

Wenji Zone 6

Wenji Zone 7

Wenji Zone 8

Wenji Zone 9

Wenji Zone 10

320

270

100

Wenji Zone 1

Wenji Zone 2

Wenji Zone 3

Wenji Zone 4

Wenji Zone 5

Wenji Zone 6

Wenji Zone 7

Wenji Zone 8

Wenji Zone 9

Wenji Zone 10

Wenji Zone 1

Wenji Zone 2

Wenji Zone 3

Wenji Zone 4

Wenji Zone 5

Wenji Zone 6

Wenji Zone 7

Wenji Zone 8

Wenji Zone 9

Wenji Zone 10

320

270

100

320

270

100

The front and rear traction gears are 2 gears, the rear traction gain is 0.
95, and the torque is set to 80%

At a linear speed of 2.
5m/min, about 5 meters, the insulation layer has been completely vulcanized
.

Sample (1) Test data: tensile strength before aging is 7.
5MPa Elongation at break is 308% (qualified)

Programme 2

Temperature control:

Wenji Zone 1	Wenji Zone 2	Wenji Zone 3	Wenji Zone 4	Wenji Zone 5	Wenji Zone 6	Wenji Zone 7	Wenji Zone 8	Wenji Zone 9	Wenji Zone 10
290	290	290	290	290	290	270	100	100	100

Wenji Zone 1

Wenji Zone 2

Wenji Zone 3

Wenji Zone 4

Wenji Zone 5

Wenji Zone 6

Wenji Zone 7

Wenji Zone 8

Wenji Zone 9

Wenji Zone 10

290

270

100

Wenji Zone 1

Wenji Zone 2

Wenji Zone 3

Wenji Zone 4

Wenji Zone 5

Wenji Zone 6

Wenji Zone 7

Wenji Zone 8

Wenji Zone 9

Wenji Zone 10

Wenji Zone 1

Wenji Zone 2

Wenji Zone 3

Wenji Zone 4

Wenji Zone 5

Wenji Zone 6

Wenji Zone 7

Wenji Zone 8

Wenji Zone 9

Wenji Zone 10

290

270

100

290

270

100

The front and rear traction gears are 2 gears, the rear traction gain is 0.
95, and the torque is set to 75%

At a linear speed of 2.
5m/min, about 5 meters, the insulation layer has been vulcanized
.

Sample (2) test data: tensile strength before aging 8.
9MPa Elongation at break 374% (qualified)

Programme 3

Temperature control:

Wenji Zone 1	Wenji Zone 2	Wenji Zone 3	Wenji Zone 4	Wenji Zone 5	Wenji Zone 6	Wenji Zone 7	Wenji Zone 8	Wenji Zone 9	Wenji Zone 10
270	270	270	270	270	270	270	100	100	100

Wenji Zone 1

Wenji Zone 2

Wenji Zone 3

Wenji Zone 4

Wenji Zone 5

Wenji Zone 6

Wenji Zone 7

Wenji Zone 8

Wenji Zone 9

Wenji Zone 10

270

100

Wenji Zone 1

Wenji Zone 2

Wenji Zone 3

Wenji Zone 4

Wenji Zone 5

Wenji Zone 6

Wenji Zone 7

Wenji Zone 8

Wenji Zone 9

Wenji Zone 10

Wenji Zone 1

Wenji Zone 2

Wenji Zone 3

Wenji Zone 4

Wenji Zone 5

Wenji Zone 6

Wenji Zone 7

Wenji Zone 8

Wenji Zone 9

Wenji Zone 10

270

100

270

100

The front and rear traction gears are 2 gears, the rear traction gain is 0.
95, and the torque is set to 90%

At a linear speed of 5.
5 m/min, about 11 meters, the insulation layer has been basically vulcanized
.

Sample (3) test data: tensile strength before aging is 7.
4MPa Elongation at break 354% (qualified)

Programme 4

Temperature control:

Wenji Zone 1	Wenji Zone 2	Wenji Zone 3	Wenji Zone 4	Wenji Zone 5	Wenji Zone 6	Wenji Zone 7	Wenji Zone 8	Wenji Zone 9	Wenji Zone 10
300	300	300	300	300	300	270	100	100	100

Wenji Zone 1

Wenji Zone 2

Wenji Zone 3

Wenji Zone 4

Wenji Zone 5

Wenji Zone 6

Wenji Zone 7

Wenji Zone 8

Wenji Zone 9

Wenji Zone 10

300

270

100

Wenji Zone 1

Wenji Zone 2

Wenji Zone 3

Wenji Zone 4

Wenji Zone 5

Wenji Zone 6

Wenji Zone 7

Wenji Zone 8

Wenji Zone 9

Wenji Zone 10

Wenji Zone 1

Wenji Zone 2

Wenji Zone 3

Wenji Zone 4

Wenji Zone 5

Wenji Zone 6

Wenji Zone 7

Wenji Zone 8

Wenji Zone 9

Wenji Zone 10

300

270

100

300

270

100

The front and rear traction gears are 2 gears, the rear traction gain is 0.
95, and the torque is set to 90%

When the linear speed is 9m/min, it is severely flattened at the 12-meter guide wheel, and the insulation layer is not completely vulcanized
.

Sample (4) test data: tensile strength before aging is 8.
1MPa Elongation at break is 364% (qualified)

Programme 5

Temperature controlled °C

Wenji Zone 1	Wenji Zone 2	Wenji Zone 3	Wenji Zone 4	Wenji Zone 5	Wenji Zone 6	Wenji Zone 7	Wenji Zone 8	Wenji Zone 9	Wenji Zone 10
320	320	320	320	320	320	270	100	100	100

Wenji Zone 1

Wenji Zone 2

Wenji Zone 3

Wenji Zone 4

Wenji Zone 5

Wenji Zone 6

Wenji Zone 7

Wenji Zone 8

Wenji Zone 9

Wenji Zone 10

320

270

100

Wenji Zone 1

Wenji Zone 2

Wenji Zone 3

Wenji Zone 4

Wenji Zone 5

Wenji Zone 6

Wenji Zone 7

Wenji Zone 8

Wenji Zone 9

Wenji Zone 10

Wenji Zone 1

Wenji Zone 2

Wenji Zone 3

Wenji Zone 4

Wenji Zone 5

Wenji Zone 6

Wenji Zone 7

Wenji Zone 8

Wenji Zone 9

Wenji Zone 10

320

270

100

320

270

100

The front and rear traction gears are 2 gears, the rear traction gain is 0.
95, and the torque is set to 90%

When the linear speed is 7m/min, there is no flattening phenomenon at the 12-meter guide wheel, and the insulation layer is basically vulcanized
.

Sample (5) test data: tensile strength before aging is 7.
8MPa Elongation at break is 343% (qualified)

Programme 6

Temperature control:

Wenji Zone 1	Wenji Zone 2	Wenji Zone 3	Wenji Zone 4	Wenji Zone 5	Wenji Zone 6	Wenji Zone 7	Wenji Zone 8	Wenji Zone 9	Wenji Zone 10
340	340	340	340	340	340	270	100	100	100

Wenji Zone 1

Wenji Zone 2

Wenji Zone 3

Wenji Zone 4

Wenji Zone 5

Wenji Zone 6

Wenji Zone 7

Wenji Zone 8

Wenji Zone 9

Wenji Zone 10

340

270

100

Wenji Zone 1

Wenji Zone 2

Wenji Zone 3

Wenji Zone 4

Wenji Zone 5

Wenji Zone 6

Wenji Zone 7

Wenji Zone 8

Wenji Zone 9

Wenji Zone 10

Wenji Zone 1

Wenji Zone 2

Wenji Zone 3

Wenji Zone 4

Wenji Zone 5

Wenji Zone 6

Wenji Zone 7

Wenji Zone 8

Wenji Zone 9

Wenji Zone 10

340

270

100

340

270

100

The front and rear traction gears are 2 gears, the rear traction gain is 0.
95, and the torque is set to 95%

When the linear speed is 8m/min, there is no flattening phenomenon at the 12-meter guide wheel, and the insulation layer is well vulcanized
.

Sample (6) test data: tensile strength before aging is 7.
2MPa Elongation at break 303% (qualified)

Second, the production of silicone rubber sheath with a cable core of 52mm, the thickness of the sheath is 4mm
.

Insulating material: ordinary silicone rubber, vulcanizing agent: double two four vulcanizing agent

Mold (mold core: 53.
5mm, mold sleeve: 60.
5mm)

scheme

Initial temperature °C:

Wenji Zone 1	Wenji Zone 2	Wenji Zone 3	Wenji Zone 4	Wenji Zone 5	Wenji Zone 6	Wenji Zone 7	Wenji Zone 8	Wenji Zone 9	Wenji Zone 10
370	370	370	370	370	370	270	100	100	100

Wenji Zone 1

Wenji Zone 2

Wenji Zone 3

Wenji Zone 4

Wenji Zone 5

Wenji Zone 6

Wenji Zone 7

Wenji Zone 8

Wenji Zone 9

Wenji Zone 10

370

270

100

Wenji Zone 1

Wenji Zone 2

Wenji Zone 3

Wenji Zone 4

Wenji Zone 5

Wenji Zone 6

Wenji Zone 7

Wenji Zone 8

Wenji Zone 9

Wenji Zone 10

Wenji Zone 1

Wenji Zone 2

Wenji Zone 3

Wenji Zone 4

Wenji Zone 5

Wenji Zone 6

Wenji Zone 7

Wenji Zone 8

Wenji Zone 9

Wenji Zone 10

370

270

100

370

270

100

The front and rear traction gears are 2 gears, the rear traction gain is 0.
94, and the torque is set to 100%

When the linear speed is 2m/min, about 8 meters, the sheath layer has been completely vulcanized and persulfurized
.

When the linear speed rises to 3m/min, at 8 meters, the sheath layer is basically vulcanized, and slightly sulfurized
.

Adjust the temperature °C:

Wenji Zone 1	Wenji Zone 2	Wenji Zone 3	Wenji Zone 4	Wenji Zone 5	Wenji Zone 6	Wenji Zone 7	Wenji Zone 8	Wenji Zone 9	Wenji Zone 10
330	330	330	330	330	330	270	100	100	100

Wenji Zone 1

Wenji Zone 2

Wenji Zone 3

Wenji Zone 4

Wenji Zone 5

Wenji Zone 6

Wenji Zone 7

Wenji Zone 8

Wenji Zone 9

Wenji Zone 10

330

270

100

Wenji Zone 1

Wenji Zone 2

Wenji Zone 3

Wenji Zone 4

Wenji Zone 5

Wenji Zone 6

Wenji Zone 7

Wenji Zone 8

Wenji Zone 9

Wenji Zone 10

Wenji Zone 1

Wenji Zone 2

Wenji Zone 3

Wenji Zone 4

Wenji Zone 5

Wenji Zone 6

Wenji Zone 7

Wenji Zone 8

Wenji Zone 9

Wenji Zone 10

330

270

100

330

270

100

The front and rear traction gears are 2 gears, the rear traction gain is 0.
94, and the torque is set to 100%

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