MT 716-2005 Technical conditions for acceptance of steel wire ropes for important purposes in coal mines MT716-2005 standard download decompression password: www.bzxz.net

ICS 77. 140. 65
Registration No.: 15493—2005
Coal Industry Standard of the People's Republic of China
MT716-2005
Representative MT716-1997
Technical conditions for acceptance of wire ropes for mine hoisting for important purposes in coal mines2005-03-19Promulgated
National Development and Reform Commission
2005-06-01Implementation
Normative reference documents
Technical requirements
Test methods
Inspection regulations
Packaging standards Quality certificate
Record A (Normative Appendix)
Steel purity, cutting and surface quality
M71E—2005
MT 716—2335
This standard is not equivalent to the international standard 1503154, 19BB% expansion and lifting steel rope cross-technical condition 3. This Swiss standard is also a regulatory appendix.
This standard is issued by the China Coal Industry Association and the Ministry of Development and Reform of the People's Republic of China Coal Industry. The unit of this standard is: National Coal Code Explosion-proof Safety Product Safety Inspection Center. The drafter of this standard is: Dali Norma, Qingchang. 1 Scope
Technical conditions for acceptance of wire ropes for important purposes in coal mines MIT716—2005
This standard specifies the technical requirements, test methods, acceptance rules, other equipment, markings and quality standards for wire ropes for important purposes in coal mines, including: vertical lifting wire, inclined wire rope, hanging plate knife wire rope, wire rope for conveying people ... For any referenced document of a certain date, its subsequent age or revision (excluding the contents of the referenced document) shall not apply to the standard. However, the parties to the agreement reached on this standard shall study whether the latest version of these documents shall be used. For any referenced document of a certain date, its latest version shall be the same as that of this standard. GB:T228--2002 Method for tensile test of steel materials B/T2332332 Method for testing steel mesh materials for production use CB/39--009 Method for testing steel wire ropes GBT2\31-938 General provisions for the quality, marking and quality certification of steel wire ropes GBT2973-982 Method for testing the bearing capacity of zinc layer of copper wire for general sale 170·987 Specification for numerical control GB/T 8358-1987 GN/T R918-1996 G3/2 8919-19s6
Test method for wire drum breaking tension
Wire rope
Wire for end making
G1522-196
Surface contact hook wire
3 Wire ground group or
3.1 Wire
Rope compression should comply with the provisions of B.Tα.9. 3.2 Fiber core
Fiber setting with fixed hemp, brocade yarn, composite or fiber continuous Or other materials that can meet the requirements. 3.3 Lubricated core
It is divided into independent steel wire core (1WR! Wire strands also IWS) 3.4 Oiling
The surface of the steel wire rope should be evenly coated with anti-rust and lubricating grease. For the wire rope used for grinding the ink wheel, the surface should be coated with friction grease, and no friction is allowed.
4 Technical requirements
4.1 Technical requirements for steel wire
4.7. 1 Diameter:
4.1.1.1 Nominal diameter:
Should comply with the provisions of G89 and H126259, otherwise it should be agreed upon by both the supplier and the buyer and indicated in the order form. MT716-2QC5
4.1.1.2 Straightness deviation and tolerance:
The allowable and unlimited extension of the measured diameter of the adjustment rope shall comply with the provisions of Table 1. Table 1 Allowable extension and tolerance
Not shown Degree, not big,
strands are all wire wire girls with fiber energy strands Zhi system grade strands are all for the creation of the garden strict double-dimensional strands of wire 5
4.1.2 Length:
4.1.2.1 Nominal length
should be determined by the supply and demand effect, and in the order contract A 4.1.2.2 Actual length:
The allowable end difference should meet the following provisions:
When the length is less than or equal to 4c m:
When it is longer than 4℃cm, for every =000㎡ or less than 1CCCM, +2gm6
pressurization shall also be applied to the steel wheel for some elastic length deviation hours·should be agreed upon by the supplier and the buyer and indicated in the order contract. 4.1.3 Unit length mass:
4.1.3.1 Nominal mass:
Nominal mass is in kg/100m and shall comply with the provisions of GB/T8512 and CB/T152. It shall be agreed upon by the supplier and the buyer and indicated in the order contract.
4. 1.3.2 Actual mass:
shall not be less than 5% of the standard mass and not less than 105% of the standard mass, otherwise it shall be determined by the supplier and the buyer and indicated in the order contract.
4.1.4 Surface quality and quality:
Shall comply with the provisions of Appendix A.
4.1.5 Non-looseness:
The fishing line is not loose,
4.1.6 Nominal tensile strength and breaking force: 4.1.6.1 Nominal tensile strength:
The nominal tensile strength of the elastic and silver wire shall comply with the provisions of the table. Table 2 Surface condition and nominal tensile strength Class B smooth surface and Class A complex surface AP smooth surface A smooth surface Note, 1370VPn, only suitable for some environments, nominal technical pressure, MPa When the pure internal wire is adjusted back to a nominal tensile strength (sufficient to make up for it), the nominal tensile strength of the valve body cannot be damaged by the public strength of the wire. When the pure internal diameter of the steel wire is two adjacent nominal tensile strength grades: the nominal tensile strength of the steel wire should not be lower than the absolute maximum external tensile strength. 4. t. 6. 2 There are two methods to test the breaking tension of copper wire rope, the breaking torsion force and the breaking force of the wire, and the actual measured values ​​should not be less than 2. MT715-2005 CB/T991%: Table 1.--Table 5 and G/T162S Table 7~Table 2 The nominal tensile strength of the steel wire can correspond to the specified values ​​4.2 Requirements for steel wire removal 4.2.1 General: When steel is mixed for test, steel with the same nominal diameter should be taken as a group, and the nominal tensile strength grade in the standard should be used as the standard tensile strength of the steel wire, and the test results of various steel wires should be checked. 2.2 Diameter:
4.2.2.1 Nominal diameter:
To be specified in the wire adjustment certificate.
4.2.2.2 Allowable diameter difference:
Surface copper wire and B-type galvanized steel, AB strip, and A-type potassium-zinc steel shall comply with the provisions of Table 3. It is not allowed to exceed 3% of the number of each wire in the continuous measurement by the table, and the corresponding specified values ​​are not exceeded: Table 3 Steel wire mutual diameter filling material
Wire type monitoring
6,2ndD, 60
t.635..00
1, 6-,1, 6G
2. 40d-3. 7c
2 7023d*2.2c
4.2.3 Tensile strength:
Tobacco wire mutual diameter allowable flow difference
Smooth surface, Class B, Class AB fused ketone wire
2, 02
4.2.3.1 Nominal tensile strength and wire breaking tensile strength: It shall comply with the provisions of Table 3 and be noted in the wire rope quality certificate. 4.2.3.2. Measured heat resistance:
is in the meter position
A British explosion adjustment
allows a small number of steel heat expansion strength lower than the standard tensile strength of this steel reduced by UM1\'s strength value, so the standard tensile strength can be no lower than 82% (the cancellation factor): for the same standard steel core plate breaking tensile force of copper wire rope, the use of adjustable wire rope should not be lower than the design box measured average breaking tensile force and %, and the measured breaking tensile force of the steel wire is not less than 2% of the actual average breaking tensile force of the heat avoidance box, but not less than half of the measured average breaking tensile force. The result of the increase is based on the standard of 1%. This small amount of steel wire is called a steel wire. This item shall meet the requirements of Table 4 and GB/T16269 Section 6.4, 1.1. The allowable minimum value of the strength of the steel wire in Table 4 is called a strength wire. M
4.2.4 The number of repeated bends
The diameter is greater than or equal to 6.5m. The degree of adjustment shall meet the requirements of Table 5. The number of repeated bends of steel wires with a diameter greater than or equal to 6.5m shall meet the requirements of the table. The number of repeated bends of steel wires with a diameter greater than or equal to 6.5m shall meet the requirements of the table. The number of repeated bends of steel wires with a diameter greater than or equal to 6.5m shall meet the requirements of the table. The torsion value of the steel wire is allowed to be reduced by about 9% (the ratio of the torsion value of the steel wire is 10, which can be rounded to an integer). This kind of steel wire is called low-value steel wire. The torsion value of the steel wire must meet the requirements of Table 7. The torsion value of the steel wire is allowed to be lower than the lower limit of Table 7 but not lower than the specified value of Table 7. The lower limit of B8170 is about 10%, which is called low-value steel wire.
C,E5429. 55
0.55:-0.60
0,5cd0.65
0, 55c0.70
0.702d-0. 75
5,75_0, 80
3. d0. 55
3. 95.u-0, 3
. 5
:. 50sud:,1, SG
2.60 d.1. 7r
.70+2d-.1.80
2.80.d.1.50
-.902.2.00
2. 004.2.20
2. =045*:3. 30
2. 20d:: 3. 20
2. 302<.3. J3
2, 402-2. ±2
2. 5042. E2
2. 36*d-.2. 90
for curved cylinder
smooth surface and blue steel wire
class A galvanized steel wire
public tensile strength-MPa
class A translation
reported wire public effective diameter
2. 002:0-:3. 70
2.1043.20
2.206Q3. 30
R.30-3, 4
3.o01 s-3. 50
3. 60%:2-5. 70
3.7u±3. 80
M. 9 d- 1. JG
4.0d1. JG
4. .n*4. 20
4. 20d+ 1. 32
4. 32+4. 43
Through the surface column
Hang 5 (continued)
Compared with the surface and hot galvanized steel wire
AD hot zinc grinding wire
Nominal strength width.MF,
: The steel removed from the guide cavity is less than the amount of clothing. The actual surface is reduced by 1:: for weaving, 1370M1 public strength, the change is based on the number of 1472, the pot wire is at least high bending surface contact steel sign rope?
Now need round flange
Grab the previous specification
n 552d-20 #0
n 5c4-n 5
0. 55*d-.0. 70
0. 70d0.25
G.75+345.80
t. 8uasn s3
6.85a-.0.00
0. 20-a-0. 03
0.95d-.1. 00
2, 5℃
This little learning effect
Important purpose steel screen
Nominal arc protection supply.MP:
MT 71E200E
A related zinc wire
a7n!i670
MT 716—2005
Loose frequency standard vertical diameter
:. nnd-1.1n
:.fd-1, 20 | | tt | 00:-22.16
2. 198:d2. 20
2. 25%:d~2. 3C
2.3d2. 16
2. tl:+.2. a
2 60x0-2,70
2. 7ncg42a, xn
2 R0d-:P. 63
,icda co
3, 0G5c.3.20
3.10±±-:3.20
, 0s-3, 3n
5C
3, 6048.7C
3. 80.-2. qU
3. 902-,4, 00
2. 2ueat. 1
. 2c d-24. 3
and curved column
Table 5 (hungry)
General tensile strength, MPB
Nominal diameter of wire adjustment
0. 5(s,dc.-. 00
1. xa1. 3
1. 36 1. S6
1. NO≤d-2. 3c
2. sd-.0c
3. sds. CU
1.t23-ds76
s.75d-4.u0
4.2±:d4. 20
Some effective direct control
c.53dc1.00
1. d1, 3D
1. 302d*1, 82
:. 8022d-3. 33
2. 70
3. 70n2d-4.CJ
9. 9(.4. 20
. 20- s. a3
Table 7 Minimum twist times of wire halo? Minimum twist times of surface contact wire braid
Li Taisuo
Table Minimum twist times
Re-changing period
Nominal length control group method. M3n
Nominal strength, M2
1 470 : 570 1 575
+c1e70 1:
MT 716—2005
American custom front wire
1570107:17714701570:1570
: The wire produced from the special-shaped steel wire should be less than the special steel wire with the best twisting performance. After the cost reduction, the number of turns should not be less than the expensive one:
Standard: The disease can be adjusted by the whole operation. 1MP: The public can improve the efficiency of the number of turns by 1Pa. 4.2.G:
The copper wire with a small diameter is replaced by the wire knotting test. The tensile force of the knot should not be less than 0% of the public tensile strength. The number of steel wires that meet the above requirements should be within the final number of tests. 2. 2. 7 Size measurement
MT 716-2C35
If the demander requires zinc steel to be selected for zinc layer measurement (special steel): the cold sand test should meet the requirements.
(break the connection layer
0. 2Cu-0. 2
0, 23su0. 4b
U.cs.do. bt
U. 50s:0. Bt
t.60s3. 7
.rod-h. K.
... NDsd1. :K:
1. P9+1, 2G
1. 25d-1, 5G
1, F@d. at
1. 0*d-.2.50
3.23.5.70
3.70d.4.59
4. 00d-.4. 43
The most important zinc layer
Regarding the approval of zinc steel wire
AE zinc wire
A type zinc wire
4.2.8 When the customer measures the diameter of the steel wire, the number of low-value steel wires calculated by the tensile strength and the quality of the screen layer is insufficient, the number of low-value steel wires allowed by the customer is allowed to be
4.2.9 The number of low-value steel wires allowed by the customer is allowed to be
4.2.9 The number of low-value steel wires allowed by the customer is allowed to be
4.2.9 The number of low-value steel wires allowed by the customer is allowed to be
4.2.8 The number of low-value steel wires calculated by the customer measures the diameter of the steel wire, the number of low-value steel wires allowed by the customer for the tensile strength and the repeated bending and torsion, the number of low-value steel wires allowed by the customer for ... The wire used for lowering personnel or lifting people and materials should be less than 10% of the total cross-sectional area of ​​the steel wire and the total cross-sectional area of ​​the test wire. The wire used for lifting materials should be less than 10%. When there are multiple low-efficiency wires, the wire should be calculated as one wire. 5 Test method
5.1 Test of copper wire
5.1.1 Diameter measurement:
The diameter should be measured by the caliper or the measurement of the diameter of the wire. The diameter should not be less than 0. 5m.
The measurement should be carried out under the conditions of the standard method. It should be carried out on the straight part outside the steel head of about 15, in the whole photo, the two diameters should be measured upward without asking the book, and the average value of the four-times measurement result can be used as the general diameter measurement. At the same time, the ratio of the measurement result to the actual measurement result is also the technical measurement method. In case of dispute, the high diameter can be increased under the condition of applying a minimum breaking force of 5% of the wire length. 6.1.2 Length measurement:
The length measurement method of the steel rope should be agreed upon by the supplier and the buyer, and the length measurement unit of the steel wire rope should be noted in the contract. The precision of the measurement should not be biased. 12. 5.1.3 Quality determination
MT'7162005
To measure the total mass of the wire rope (including the whole wire and the packaging material of the chain). Subtract the number of reels and hooks from the total mass and divide it by the actual length of the wire (in units of 100 meters) to get the actual unit mass of the wire rope. 5.1.4\ Looseness inspection;
One end of the sea steel rope is untied and connected to form a pair of strands about two meters long. After the two strands are replaced and placed in their original positions, they should not open by themselves (except for the four strands of steel rope). The wire rope determined to be loose is considered to be unqualified wire rope. 5.1.5 Pull it out and test it again:
Perform the method specified in GB/835:.
5.1.6 When testing the total tensile force of the steel wire, the total tensile force of the micro-breakage of the wire is the sum of the actual tensile force of the whole wire. When testing the internal tension of the steel wire, the total tensile force of the micro-breakage of the wire shall be the sum of the tensile force of all the new wires.
5.2 Test of disassembled wire
5.2.1 The test shall be conducted on the same wire. Measure two high diameter values ​​upwards, and then take the half-mean value as the actual diameter of the projectile: 5.2.2 Breaking tensile test:
According to the method specified in GB/228, the distance between the sample and the test machine should be no less than 1m1 5.2.3 This test:
According to the method specified in CB/T238
5.2.4 Torsion verification:
According to the method specified in G51239.
5.2.5 Zinc layer quality test
According to the sonication specified in GB/T2973.
5.2.6 Surface quality inspection:
Perform according to Record 43,
6 Inspection rules
G. 1 General
6.1.1 Each steel wire shall be inspected by the competent inspection unit authorized by the national inspection department, 6.> Sampling method
6.2.1 Procedure!
Take a sufficient length of test wire from one end of the wire rope to perform the force test, and take a sufficient length of test wire from each end of the wire rope to make a straight strand (the size of the steel wire rope shall be selected according to the provisions of Table 10), and carry out the test according to the provisions of 2.
Table 10 The failure of multi-layer steel wire stripping
MX/US
RQ×1$+64×21 *
：10
6. 2. 2 Method 2:
Each end of the wire is cut into a steel wire sample of sufficient length. The number of test samples should be [% of the total number of test samples, with the interval between the samples being1.3 Quality determination
MT'7162005www.bzxz.net
To measure the total mass of the system (including the whole chain and the packaging material of the chain). Subtract the total mass from the total mass, and divide it by the actual measured length of the wire (in units of 100 meters) to get the actual unit mass of the wire. 5.1.4\ Looseness inspection;
One end of the steel wire rope is untied and connected to a pair of strands about two meters long. After the two strands are replaced and placed in their original positions, they should not open by themselves (except for the four strands of steel wire rope). The steel wire rope determined to be loose during inspection is considered unqualified. 5.1.5 Wire rope breakage test:
Perform according to the method specified in GB/835:
5.1.6 Measurement of the total tensile force of the steel wire When the test wire rope is maintained, the total tensile force of the wire micro-breakage is the sum of the tensile force of the whole wire. When the test wire rope is maintained, the total tensile force of the wire micro-breakage is the sum of the tensile force of the whole wire. ,
5.2 Test of unstranded wire
5.2.1 Straight wire shall be regarded as non-standard:
Two high diameter values ​​shall be measured at the same point of the wire, and then the half mean value shall be taken as the actual diameter of the wire: 5.2.2 Breaking tensile test:
The method specified in GB/228 shall be used. The distance between the specimen and the test machine shall not be less than 1m15.2.3 Area warning for this test:||t t||Perform according to the method specified in CB/T238
5.2.4 Torsion verification:
Perform according to the method specified in G51239.
5.2.5 Zinc layer quality test
Perform according to the method specified in GB/T2973.
5.2.6 Surface quality inspection:
Perform according to Lu 43,
6 Inspection rules
G. 1 General Principles
6.1.1 Each steel wire shall be inspected for absolute weakness 6.1.2 The inspection and testing shall be conducted by a qualified inspection unit authorized by the national inspection and testing department. 6.> Sampling Method
6.2.1 How to do it!
Take a sufficient length of test wire from one end of the wire rope to conduct the strength test. Take a sufficient length of test wire from each end of the wire rope to make a strand (the size of the steel wire rope shall be selected according to the provisions of Table 10). Conduct the test and testing according to the provisions of Table 2.
Table 10 The strands of multi-layer steel wire taken from the elastic strip
MX/US
RQ×1$+64×21 *
：10
6. 2. 2 Method 2 :
Each winter, one end of the wire is cut into a steel wire sample of sufficient length. The number of test samples should be [% of the total number of test samples, with the interval between the phases being the same.1.3 Quality determination
MT'7162005
To measure the total mass of the system (including the whole chain and the packaging material of the chain). Subtract the total mass from the total mass, and divide it by the actual measured length of the wire (in units of 100 meters) to get the actual unit mass of the wire. 5.1.4\ Looseness inspection;
One end of the steel wire rope is untied and connected to a pair of strands about two meters long. After the two strands are replaced and placed in their original positions, they should not open by themselves (except for the four strands of steel wire rope). The steel wire rope determined to be loose during inspection is considered unqualified. 5.1.5 Wire rope breakage test:
Perform according to the method specified in GB/835:.
5.1.6 Measurement of the total tensile force of the steel wire. When testing the steel wire rope, the total tensile force of the wire micro-breakage is the sum of the tensile force of the whole steel wire. When testing the steel wire rope, the total tensile force of the wire micro-breakage is the sum of the tensile force of the whole steel wire. ,
5.2 Test of unstranded wire
5.2.1 Straight wire shall be regarded as non-standard:
Two high diameter values ​​shall be measured at the same point of the wire, and then the half mean value shall be taken as the actual diameter of the wire: 5.2.2 Breaking tensile test:
The method specified in GB/228 shall be used. The distance between the specimen and the test machine shall not be less than 1m15.2.3 Area warning for this test:||t t||Perform according to the method specified in CB/T238
5.2.4 Torsion verification:
Perform according to the method specified in G51239.
5.2.5 Zinc layer quality test
Perform according to the method specified in GB/T2973.
5.2.6 Surface quality inspection:
Perform according to Lu 43,
6 Inspection rules
G. 1 General Principles
6.1.1 Each steel wire shall be inspected for absolute weakness 6.1.2 The inspection and testing shall be conducted by a qualified inspection unit authorized by the national inspection and testing department. 6.> Sampling Method
6.2.1 How to do it!
Take a sufficient length of test wire from one end of the wire rope to conduct the strength test. Take a sufficient length of test wire from each end of the wire rope to make a strand (the size of the steel wire rope shall be selected according to the provisions of Table 10). Conduct the test and testing according to the provisions of Table 2.
Table 10 The strands of multi-layer steel wire taken from the elastic strip
MX/US
RQ×1$+64×21 *
：10
6. 2. 2 Method 2 :
Each winter, one end of the wire is cut into a steel wire sample of sufficient length. The number of test samples should be [% of the total number of test samples, with the interval between the phases being the same.
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