Specializing in Conveyor Belts & Timing Belts to Help Keep Your Production Running Smooth.
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Product classification:
According to the framework material: nylon (NN) canvas core flame retardant conveyor belt (nylon flame retardant belt for short);
Polyester (EP) canvas core flame retardant conveyor belt (referred to as polyester flame retardant belt).
Purpose:
It is widely used in coal, mining, port, metallurgy, electric power, chemical industry, casting, building materials and other industries and places. It is especially suitable for material transportation in surface coal washing plant, power plant and non coal underground mining. It is used to transport non corrosive bulk, granular and powder materials, bulk materials or finished articles.
Structure:
The flame-retardant conveyor belt for general purpose fabric core is made of multi-layer dipping nylon (NN) canvas and polyester (EP) canvas as the skeleton material, covered with flame-retardant covering rubber, which is calendered, shaped, vulcanized and other processes.
Features:
Nylon (NN) canvas core flame-retardant conveyor belt has the advantages of light weight, good elasticity, high strength, impact resistance and grooving. It is suitable for conveying materials in medium and long distance, large volume and high speed.
Polyester (EP) canvas core flame retardant conveyor belt has high initial modulus, good thermal stability of belt body size, high strength, small elongation and impact resistance, which is suitable for conveying materials in medium and long distance, large volume and high speed.
·Executive standard:
GB / t10822-2014 flame retardant conveyor belt with fabric core for general use
·Main technical indicators:
GB / t10822-2014 main technical indexes
| Project | Type | |||
NN、EP | ||||
Adhesion strength | Overlay and Between cores | Thickness of covering layer ＞ 1.5mm More than N/mm | 3.5 | |
Thickness of covering layer: 0.8 ~ 1.5mm More than N/mm | 3.2 | |||
Between layers ≥ n / mm | 4.5 | |||
Longitudinal full thickness tensile strength value of belt / N / mm | 160 ~ 3150 | |||
Elongation of full thickness longitudinal reference force of belt /% ≤ | 4 | |||
Coating performance | D (high wear) | L (moderate wear) | ||
Breaking strength / MPa ≥ | 17-18 | 14 | ||
Elongation at break /% ≥ | 450 | 400 | ||
Abrasion / mm3 ≤ | 175 | 200 | ||
Aging test (70 ℃× 168h) Median value of tensile strength and elongation at break | It shall not be less than 75% of the corresponding value before aging. | |||
GB / t10822-2014 safety performance technical index
Item | Fire resistance grade | ||
K1 | K2 | K3 | |
Flame duration | The total flame duration of three samples with and without cover shall not be more than 45s, the single value with cover shall not be more than 15s, and the single value without cover shall not be more than 20s. | 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 covering layer shall not be greater than 60s. |
Electrostatic conductivity | Not more than 3 × 108 Ω | ||
Reburning property | No flame shall appear again on any sample | ||
Product classification:
According to the framework material: nylon (NN) canvas core flame retardant conveyor belt (nylon flame retardant belt for short);
Polyester (EP) canvas core flame retardant conveyor belt (referred to as polyester flame retardant belt).
Purpose:
It is widely used in coal, mining, port, metallurgy, electric power, chemical industry, casting, building materials and other industries and places. It is especially suitable for material transportation in surface coal washing plant, power plant and non coal underground mining. It is used to transport non corrosive bulk, granular and powder materials, bulk materials or finished articles.
Structure:
The flame-retardant conveyor belt for general purpose fabric core is made of multi-layer dipping nylon (NN) canvas and polyester (EP) canvas as the skeleton material, covered with flame-retardant covering rubber, which is calendered, shaped, vulcanized and other processes.
Features:
Nylon (NN) canvas core flame-retardant conveyor belt has the advantages of light weight, good elasticity, high strength, impact resistance and grooving. It is suitable for conveying materials in medium and long distance, large volume and high speed.
Polyester (EP) canvas core flame retardant conveyor belt has high initial modulus, good thermal stability of belt body size, high strength, small elongation and impact resistance, which is suitable for conveying materials in medium and long distance, large volume and high speed.
·Executive standard:
GB / t10822-2014 flame retardant conveyor belt with fabric core for general use
·Main technical indicators:
GB / t10822-2014 main technical indexes
| Project | Type | |||
NN、EP | ||||
Adhesion strength | Overlay and Between cores | Thickness of covering layer ＞ 1.5mm More than N/mm | 3.5 | |
Thickness of covering layer: 0.8 ~ 1.5mm More than N/mm | 3.2 | |||
Between layers ≥ n / mm | 4.5 | |||
Longitudinal full thickness tensile strength value of belt / N / mm | 160 ~ 3150 | |||
Elongation of full thickness longitudinal reference force of belt /% ≤ | 4 | |||
Coating performance | D (high wear) | L (moderate wear) | ||
Breaking strength / MPa ≥ | 17-18 | 14 | ||
Elongation at break /% ≥ | 450 | 400 | ||
Abrasion / mm3 ≤ | 175 | 200 | ||
Aging test (70 ℃× 168h) Median value of tensile strength and elongation at break | It shall not be less than 75% of the corresponding value before aging. | |||
GB / t10822-2014 safety performance technical index
Item | Fire resistance grade | ||
K1 | K2 | K3 | |
Flame duration | The total flame duration of three samples with and without cover shall not be more than 45s, the single value with cover shall not be more than 15s, and the single value without cover shall not be more than 20s. | 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 covering layer shall not be greater than 60s. |
Electrostatic conductivity | Not more than 3 × 108 Ω | ||
Reburning property | No flame shall appear again on any sample | ||
