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General purpose flame retardant steel cord conveyor belt

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Quantity:

Purpose:
General purpose flame-retardant steel cord conveyor belt is suitable for material conveying in coal washing plant, power plant and non coal underground mining. It is suitable for conveying massive, granular and powder materials in high strength, long distance and large volume.


Structure:
General purpose flame retardant steel cord conveyor belt is composed of upper covering layer, lower covering layer, steel wire rope, adhesive layer and side glue.


Features:
This product has the characteristics of general flame-retardant, high tensile strength, impact resistance, good elasticity, high wear resistance, small elongation, good adhesion between rubber and steel wire rope, even tension of steel wire rope, good slotting performance, etc. it is suitable for conveying massive, granular and powdery materials under the occasions of high strength, long distance and large transportation volume.

·Executive standard: Hg / T 3973-2007 general purpose flame retardant steel cord conveyor belt


Main technical indicators:

and strength
level

Tensile strength
(N/mm)

A wire rope
spacing
(mm)

A wire rope
diameter
(mm)

Thickness of upper and lower overburden
(mm)

A wire rope
Minimum breaking force
(kN)

Adhesion strength of steel wire rope ≥

Before aging

After aging

ST-630

630

10

3.0

5+5

6.93

60

55

ST-800

800

10

3.5

5+5

8.8

70

65

ST-1000

1000

12

4.0

6+6

13.2

80

75

ST-1250

1250

12

4.5

6+6

16.5

95

90

ST-1600

1600

12

5.0

6+6

21.12

105

95

ST-2000

2000

12

6.0

8+6

26.4

105

95

ST-2500

2500

15

7.2

8+6

41.25

130

120

ST-2800

2800

15

7.6

8+6

45.9

135

125

ST-3150

3150

15

8.1

8+8

51.98

140

130

ST-3500

3500

15

8.6

8+8

57.7

145

140

ST-4000

4000

15

8.9

8+8

66.0

150

145

ST-4500

4500

16

9.7

8+8

79.2

165

160

ST-5000

5000

17

10.9

8.5+8.5

93.5

175

170

ST-5400

5400

17

11.3

9+9

101

180

175


Item

Type

H(Strong splitting)

D(Strong wear)

L(General conditions)

Tensile strength of overburden  /  MPa  ≥

20

18

15

Elongation at break of coating /  %    ≥

400

400

350

Wear volume        / mm3  ≤

200

120

200

Aging test (70 ℃× 168h)
Change rate of tensile strength and elongation at break

±25%

Adhesion strength between cover layer and core layer,≥N/mm

12


K2

K3

Flame duration

The total flame duration of 6 samples with covering layer shall not be more than 45s, and any single value shall not be more than 15s.

The average value of flame duration of three samples with cover layer shall not be greater than 60s.

Electrostatic conductivity

≤3 × 108 Ω

Reburning property

There shall be no re emergence of flame on any one of the test pieces.


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