GB/T 40089-2021Steel wire ropes for the petroleum and natural gas industries - Minimum requirements and terms of acceptance (English PDF)

4.1 Material

4.1.3 Grease

Grease requirements should meet the requirements of ISO 4346 or YB/T 4613.

4.2 Wire rope manufacturing

4.2.1 General

4.2.1.1 In a strand of a multi-strand steel wire rope, the lay direction of the same layer of steel wires is the same. The lay length of strands of the same layer, structure and size in the rope should be Unanimous.

4.2.1.2 In addition to compacting (forging) wire ropes, when designing or selecting rope cores, under no-load conditions, ensure that there is a certain amount of space between the outer strands of the wire rope gap.

4.2.1.3 The end of the steel wire rope should be fixed to prevent it from falling apart.

4.2.2 Wire joint

4.2.2.1 When the steel wire with a diameter greater than 0.40mm is spliced, butt welding shall be used. The logging wire should be continuous and there should be no joints.

4.2.2.2 For multi-strand steel wire ropes, the spacing of the steel wire joints in the same strand should be greater than or equal to 18 times the diameter (D) of the steel wire rope.

4.2.2.3 For single-twist steel wire ropes, the joint spacing of steel wires in any layer shall be greater than or equal to 36 times the diameter of the layer.

4.2.2.4 Steel wires with a diameter less than or equal to 0.40mm may be connected by plug-in connection.

4.2.3 Pre-deformation and post-deformation

Unless otherwise specified by the buyer, the multi-strand steel wire rope should be pre-deformed or post-deformed, or both.

Note: Some parallel twisted dense wire ropes or anti-rotation wire ropes do not need to be pre-deformed.

4.2.4 Structure

4.2.4.1 The structure of the steel wire rope should adopt the structure in Appendix E, or it can be specified by the manufacturer.

4.2.4.2 Compacted strand steel wire rope, compacted (forged) steel wire rope, thick diameter (diameter greater than 60.0mm) multi-strand steel wire rope and single-twist steel wire rope The structure of (single-strand steel wire rope and fully sealed steel wire rope) shall be specified by the manufacturer.

4.2.4.3 When the purchaser only specifies the type of steel wire rope, the manufacturer shall specify the structure of the steel wire rope.

4.2.4.4 The structure of the steel strand for underground operations should be 1×16M or 1×19M, or specified by the manufacturer.

4.2.5 Wire rope level

4.2.5.1 The strength level of multi-strand steel wire ropes of commonly used categories and specifications shall meet the requirements of Appendix E.

4.2.5.2 The strength level of the steel wire rope between the specified levels may be stipulated by agreement between the purchaser and the manufacturer.

Note: Not all steel wire ropes (such as thick-diameter multi-strand steel wire ropes and single-twist steel wire ropes) have nominal grades.

4.2.6 Surface condition of steel wire

4.2.6.1 Rope-making steel wire is divided into non-coated (smooth) steel wire, B-grade galvanized steel wire and A-grade galvanized steel wire.

4.2.6.2 For smooth steel wire rope, only the smooth steel wire of inner layer wire, center wire, filler wire and core rope are allowed to be replaced by galvanized steel wire.

4.2.6.3 For galvanized steel wire ropes, all steel wires shall be galvanized steel wires, including steel wires for steel cores.

4.2.6.4 The galvanized steel wire specified in this document includes Zn-5%Al alloy coated steel wire.

4.2.7 Twisting direction and twisting method of steel wire rope

4.2.7.1 The twisting direction and twisting method of multi-strand steel wire ropes are as follows.

a) Right interactive twist (sZ);

5.1 Multi-strand steel wire rope and single-twist steel wire rope

5.1.4 Test of breaking force of wire rope

5.1.4.1 Method 1-Measured breaking force

5.1.4.1.1 The method of actually measuring the breaking force shall comply with the provisions of Appendix K.

5.1.4.1.2 When the measured tension value reaches or exceeds the minimum value, it can be determined that the wire rope meets the breaking tension requirement.

5.1.4.1.3 When the measured tensile value does not reach the minimum value, three additional tests can be carried out, and once it reaches or exceeds the minimum value It is also possible.

5.1.4.2 Method 2-Calculate the breaking force (after rope making)

5.1.4.2.1 Accumulate the breaking force of the monofilament after splitting and multiply it by any of the following coefficients.

a) The twist loss coefficient given in Appendix I;

b) The partial twist loss coefficient obtained through the type test.

5.1.4.2.2 The partial twist loss coefficient used in the calculation is the lowest value among the three values obtained in the type test.

5.1.4.2.3 For triangular strand steel wire rope, the strand core can be calculated as a single wire.

5.1.4.2.4 The steel wire tensile test method shall comply with the provisions of D.2 or GB/T 228.1.

Note: The breaking force value determined by Method 2 is called "calculating (after making rope) breaking force".

5.1.4.2.5 When method 2 is used for periodic tests (see Table 4), and the calculated (after rope making) breaking force is smaller than the design value, method 1 can be used. Experiment again.

5.1.4.2.6 If the measured (actual) value still cannot meet the design breaking force value, the design breaking force value can be reduced to less than the actual measured value.

Then perform the type test again in accordance with Method 1.In this case, the grade of the wire rope can be determined according to the reduced breaking force value, or it can be heavy. new design.

5.1.4.3 Method 3-Calculate the breaking force (before rope making)

5.1.4.3.1 Accumulate the breaking force of the monofilament before making the rope and multiply it by the total twist loss coefficient obtained through the type test. Used for calculation The total twist loss coefficient is the lowest of the three values obtained in the type test.

5.1.4.3.2 The steel wire strength inspection shall comply with the provisions of GB/T 228.1.

Note: The breaking force value determined by Method 3 is called "calculation (before rope making) breaking force".

5.1.4.3.3 When method 3 is used for periodical test (periodical test shall comply with the provisions of Table 4), and the breaking force ratio design (before rope making) is calculated If the value is small, you can use method 1 to test again.

5.1.4.3.4 If the measured (actual) value still cannot meet the expected breaking force value, the design breaking force value can be reduced to less than the actual measured value.

Value, and then perform the type test again in accordance with Method 1.In this case, the grade of the wire rope can be determined according to the reduced breaking force value. Can be redesigned.

5.1.5 Stock split test

5.1.5.1 If the purchaser needs to conduct a stock split test, it should be specified in the contract.

5.1.5.2 Unless otherwise specified by the purchaser, see Appendix L for the sampling, test methods and acceptance criteria of the split steel wire.

5.2 Mud wire test

The test content also includes elongation, strength and single wire torsion tests. The test methods and acceptance criteria shall comply with the provisions of Appendix G.

5.3 Steel strand test for underground operations

The test content includes diameter measurement according to 5.1.3 and breaking tensile test according to 5.1.4.1.

5.4 Verification of test facilities

When required by the purchaser, the manufacturer shall provide it with all necessary facilities for verification of the test or record the product type test The result of the device situation, or both are provided to verify compliance with this document. The length of the rope sample should not be included in the order length.

5.5 Numerical rounding

When calculating the strength, the rounding of values shall comply with the provisions of YB/T 081.

6.1 Quality certificate

6.1.1 General

6.1.1.1 Unless otherwise required by the purchaser, the certificate shall comply with this document and include at least the following contents.

a) Certificate number;

b) The name and address of the manufacturer;

c) The name of the wire rope or the description of the wire rope;

d) Minimum breaking force;

e) The date of issuance of the certificate and certification.

Note: Refer to the information provided to the buyer in Appendix M.

6.1.1.2 The certificate may include the number of steel wire ropes and the nominal length.

6.1.1.3 The certificate shall meet the traceability requirements for steel wire ropes.

6.1.2 Test results

When it is necessary to verify the test results, the certificate should be appended with the following items a) or b), or both.

a) Breaking tensile test of steel wire rope---describe its value, namely.

1) Measured breaking force value;

2) Calculate the breaking force value (after rope making);

3) Calculate the breaking force value (before rope making).

b) Steel wire test.

1) The number of steel wires;

2) The nominal size of the steel wire;

3) The measured size of the steel wire (diameter or outer contour height);

4) The breaking force of the steel wire;

5) The tensile strength of the steel wire (based on the nominal size);

6) The number of torsion (and its test length);

7) Plating weight.

6.2 Packaging and marking

6.2.1 Packaging

6.2.1.1 The steel wire rope shall be supplied in a coil or coil as determined by the manufacturer.

6.2.1.2 If the purchaser has special requirements for packaging, it should be clearly specified.

6.2.1.3 The anti-rotation wire rope shall be submitted in the form of sheave.

6.2.2 Marking

The name and address, length and name of the wire rope manufacturer or supplier shall be clearly and firmly marked on each roll or reel The label of the wire rope should also include the certificate number when appropriate (see 6.1).