HG 2014-1991 Wire Rope Traction Flame Retardant Conveyor Belt HG2014-1991 Standard Download Decompression Password: www.bzxz.net

Chemical Industry Standard of the People's Republic of China
HG2014—91
Wire rope traction flame retardant conveyor belt
Published on June 27, 1991
Published by the Ministry of Chemical Industry of the People's Republic of China and implemented on December 1, 1991
Chemical Industry Standard of the People's Republic of China
Wire rope traction flame retardant conveyor belt
Subject content and scope of application
HG2014—91
This standard specifies the technical requirements, test methods, acceptance rules and marking, packaging, transportation, storage rules, etc. of wire rope traction flame retardant conveyor belts (referred to as wire rope traction flame retardant belts). This standard is applicable to conveyor belts supported and pulled by wire ropes in situations requiring flame retardancy and static conductivity. 2 Reference standards
GB528 Determination of tensile properties of vulcanized rubber
GB3512 Test method for hot air aging of rubber Specification and test method for electrical conductivity of conveyor belts
GB3684
GB3685
Test method for flame retardancy of conveyor belts
GB6757
General rules for storage and handling of conveyor belts
3 Product classification
3.1 Structure
Wire rope traction flame retardant belts use flame retardant rubber as the upper and lower short cover layers and ear rubber. Usually, the belt core is made of horizontally arranged high-elastic square steel bars and a layer of canvas with rubber on the upper and lower sides. The belt body thus formed is provided with overlapping ear rubber grooves on both sides for the convenience of wire rope traction. The upper and lower positions of the ear rubber grooves can be staggered or equidistant. As shown in Figure 1. e
Figure 1 Structure of fire-retardant belt for wire rope traction
1—High elastic square steel bar: 2—Filling rubber: 3—Tape layer; 4—Upper and cover layer, 5—Lower cover layer: 6—Ear rubber 3.2 Specifications
Approved by the Ministry of Chemical Industry of the People's Republic of China on 1991-06-27 and implemented on 1991-12-01
HG2014—91
The specifications of fire-retardant belt for wire rope traction are distinguished by width and safety performance type. 3.2.1 The width of fire-retardant belt for wire rope traction shall be determined by negotiation between the supplier and the supplier. 3.2.2 The safety performance types of flame-retardant belts for wire rope traction are shown in Table 2. 3.3 Model
The composition and arrangement order of the models of flame-retardant belts for wire rope traction are as follows: a.
Nominal width, mm
Letter code S for flame-retardant and static conductive; safety performance type, I or II,
Steel bar size, mm,
Wire rope diameter, mm,
Upper and lower cover layer thickness, mm;
Number of tape layers.
Model examples are as follows:
3.4 ​​Dimensions
3.4.1 Length
5×5×1034-40-3×2-2
-Number of tape layers
Thickness of upper and lower covering layers
Wire rope diameter
Steel bar size
Safety performance type
Letter code for flame retardant and electrostatic conductive
Belt width specifications
The length of the flame retardant belt for wire rope traction is determined by negotiation between the supplying and supplying parties, and the limit deviation of the length is ±0.2% of the ordered length. 3.4.2 Width
The upper and lower limit deviations of the width of the flame retardant belt for wire rope traction are ±1% of the bandwidth. 3.4.3 Covering layer thickness
The thickness of the covering layer of the flame retardant belt for wire rope traction is determined by negotiation between the supplying and supplying parties. When the thickness of the covering layer is equal to or less than 4mm, the lower limit deviation shall not be greater than 0.2mm; when the thickness of the covering layer is greater than 4mm, the lower limit deviation shall not be greater than 5% of the specified thickness. 3.4.4 Ear rubber thickness
The ear rubber thickness and limit deviation of the wire rope traction non-flammable belt shall be determined by negotiation between the supply and demand parties. 4 Technical requirements
4.1 Appearance quality
The wire rope traction non-flammable belt shall not have appearance defects that affect the performance or flame retardant performance. 4.2 Physical and mechanical properties of covering layer and ear rubber
The physical and mechanical properties of the covering layer and ear rubber of the wire rope traction non-flammable belt are shown in Table 1. Tensile strength, MPa not less than
Elongation at break, % not less than
Aging test:
(70℃×7 days)
Change rate of tensile strength and elongation at break, %4.3 Safety performance
HG2014—91
The safety performance of the fire-retardant belt for wire rope traction is divided into type 1 and type Ⅱ, as shown in Table 2.1, the safety performance items of type 1 include alcohol torch combustion and static electricity conduction, and type Ⅱ includes alcohol torch combustion, static electricity conduction and propane burner combustion. The user shall negotiate with the manufacturer to determine which type of safety performance type of fire-retardant belt for wire rope traction to use according to the needs. Table 2
Safety performance type
5 Test method
Alcohol burner burning
The average value of the open flame self-extinguishing time of 4 samples is not more than 60$, and the average value of the flameless combustion self-extinguishing time of 4 samples is not more than 180: The average value of the open flame self-extinguishing time of 6 full-thickness samples is not more than 3s, and the single value of the open flame self-extinguishing time of any sample is not more than 10s19 The average value of the open flame self-extinguishing time of the samples with the summer cover layer peeled off is not more than 5s, and the single value of the open flame self-extinguishing time of any sample is not more than 15s5.1 Rubber coating tensile performance test
Static conductivity
3×10*0
Propane burner burning
Conventional test: The unburned length of any sample is not less than 250
According to GB528. The size of the sample is cut by a bell-shaped cutter of type 2 (narrow part width 4.0 ± 0.1mm). 5.2 Rubber cover aging resistance test
Perform according to GB3512.
5.3 Alcohol burner burning test
Perform according to GB3685. The sample is a rectangle with a length of 150±2mm and a width of 25±2mm. The samples are all transverse samples taken at least 50mm from the inner side of the ear, without metal transverse parts. The number of samples is as follows: b. Type I: 4 full-thickness samples
b. Type II: 15 samples, divided into two groups, namely 6 full-thickness samples and 9 samples with the cover removed. 5.4 Static electricity conduction test
Perform according to GB3684.
5.5 Propane burner burning test
Perform according to relevant standards.
6 Inspection rules
6.1 The length, width and appearance quality of the steel wire rope traction non-flammable belt shall be checked one by one. HG2014—91
6.2 The steel wire rope traction non-flammable belt shall be inspected by the technical inspection department of the manufacturer in batches of no more than 2000m, but not less than once a month
6.3 When the steel wire group traction non-flammable belt needs to be type-tested according to national regulations, all items specified in this standard shall be inspected. 6.4 If any of the technical requirements of the steel wire rope traction non-flammable belt fails to meet the standards, double samples shall be taken from the same batch of products and the unqualified item shall be retested. If one sample still fails to meet the item in the retest, the batch of products shall be considered as unqualified. 7 Marking, packaging, transportation and storage
7.1 Each steel wire rope traction flame retardant belt shall have the following indelible markings: manufacturer name or trademark,
b, product name, specifications, etc.:
Year, month of production or factory batch number.
7.2 Steel wire rope traction flame retardant belt shall be wound around the wood core or iron core, wrapped with covering material, and tied firmly. 7.3 The transportation and storage of steel wire rope traction flame retardant belt shall be implemented in accordance with GB6757. Additional remarks:
This standard is proposed by the Science and Technology Department of the Ministry of Chemical Industry of the People's Republic of China. This standard is under the jurisdiction of Qingdao Rubber Industry Research Institute. This standard is drafted by Qingdao Rubber Industry Research Institute. The main drafters of this standard are Tao Dajun and Gao Qun. This standard refers to the Australian standard AS1333-1980 "Steel Wire Cord Rubber Conveyor Belt" and the British standard BS3289-1982 "Main Underground Conveyor Belt (including combustion performance)". People's Republic of China
Chemical Industry Standard
Wire Rope Traction Flame Retardant Conveyor Belt
HG2014-91bzxz.net
Chemical Industry Standard Editorial Department
(Institute of Standardization, Ministry of Chemical Industry)
Postal Code, 100013
Indian DramaInstitute of Standardization, Ministry of Chemical Industry
Copyright reserved. No reproduction allowed
1/16 Sheet 1/2#
Format 880×1230
Word Count 8000
First Edition in October 1991 First Printing in October 1991 Printing Quantity 1-500
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