GOST 1526-81

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  ГОСТ 1526-81

GOST 1526−81 galvanized steel Wire for booking of electric wires and cables. Specifications (with Amendments No. 1, 2, 3)

GOST 1526−81
Group V71

INTERSTATE STANDARD

GALVANIZED STEEL WIRE FOR RESERVATION
ELECTRIC WIRES AND CABLES

Specifications

Steel zinc-coated wire for electric wire and cable armouring.
Specifications

OKP 12 2100

Date of introduction 1982−01−01

INFORMATION DATA

1. DEVELOPED AND INTRODUCED by the Ministry of ferrous metallurgy of the USSR

2. APPROVED AND put INTO EFFECT by Decision of the USSR State Committee for standards from 24.02.81 N 970

3. REPLACE GOST 1526−70

4. REFERENCE NORMATIVE AND TECHNICAL DOCUMENTS

5. Limitation of actions taken by Protocol No. 7−95 Interstate Council for standardization, Metrology and certification (ICS 11−95)

6. EDITION with Amendments No. 1, 2, 3, approved in August 1986, March 1989, March 1991 (IUS 11−86, 5−89, 6−91)


This standard applies to steel galvanized wire round, designed for booking of electric wires and cables.

1. TYPES AND BASIC DIMENSIONS

1.1. The wire is divided according to purpose:

for average conditions of operation,

for particularly hard working conditions — coolant;

for precision manufacturing:

normal

high — P.

(Changed edition, Rev. N 2).

1.2. The diameter of the wire and maximum deviations shall be as specified in table.1.

(Changed edition, Rev. N 1, 2).

1.3. The roundness of the wire must not exceed half of the limit deviation for diameter.

Examples of symbols

Wire diameter 2.0 mm, normal precision group:

Wire 2,0-With GOST 1526−81

Same, diameter 1.4 mm, high precision, coolant group:

Wire 1,4-P-OZH GOST 1526−81

(Changed edition, Rev. N 2).

2. TECHNICAL REQUIREMENTS

2.1. Wire shall be manufactured in accordance with the requirements of this standard for technological regulations approved in the prescribed manner, of low carbon wire rod according to GOST 10702, 14−15−211 TU, TU 14−15−212 of low carbon wire rod or according to other normative documents.

(Changed edition, Rev. N 1, 2, 3).

2.2. Mechanical properties of the wire shall be as specified in table.2.

At the request of the consumer rupture strength should be 390−540 (40−55) N/mm(kgf/mm).

Table 2

(Changed edition, Rev. N 1, 2).

2.3. The zinc coating on the wire must be continuous, with no gaps, cracks, prisoner. Allowed the heterogeneity of the surface color, scratches, white coating, if the coating in this area meets the requirements of the PP.2.4−2.5. Allowed local flows of zinc, value not exceeding half of the limit deviation from the actual diameter.

(Changed edition, Rev. N 1).

2.4. Zinc plated wire should be durable and should not crack and flake off when the spiral winding on a cylindrical core with a diameter equal to the specified in table.3.

Table 3

Allowed surface powdery peeling of the zinc coating is wound.

At the request of the consumer the ratio of core diameter to the diameter of the wire should be 4.

(Changed edition, Rev. N 1, 2).

2.5. Surface density of zinc, the number of dives and the duration of each immersion shall be as specified in table.4.

Table 4

Note. Wire weighing from 46 to 290 g/mmade by agreement between manufacturer and consumer.


(Changed edition, Rev. N 1).

2.6. Wire shall be manufactured in rolls, consisting of one segment, or on the coils. The coil is allowed no more than three segments of wire. The segments should be disjoint and separated from each other by paper spacers.

The upper end of the cut wire on the coil should be secured.

Winding wire should be the correct separatornyi rows and provide free winding wire coils. Unilateral winding is not allowed. When releasing the skeins from the bindings wire not be withdrawn in «eight».

Manufacturer of wire in coils or on reels installed at the customer’s request.

Customer’s request wire must be manufactured in reels, consisting of one segment.

(Changed edition, Rev. N 1, 2).

2.7. The mass of one piece of wire on a reel or coil shall conform to the standards specified in table.5.

Allowed mass cut by 50% less than that specified in table.5 not more than 10% of the total mass of the wire in the party, and for wire diameter 1.0−6.0 mm — no more than 2% of the total mass of the wire in the party.

Table 5

(Changed edition, Rev. N 1).

3. ACCEPTANCE RULES

3.1. Wire take parties. The party should consist of wire of the same steel grade, the same diameter and the same coverage group and executed the document on the quality in which you specify:

trademark or the name and trademark of manufacturer;

symbol wire;

the results of the tests;

the number of skeins or coils of wire;

the weight of the party;

the date of manufacture.

(Changed edition, Rev. N 1).

3.2. The appearance and diameter of the control wire on each reel or coil.

3.3. To control the mechanical properties of wire and the quality of zinc coating from party select 10% of the skeins or coils, but not less than five.

3.4. If unsatisfactory test results of at least one of the indicators it is carried out re-tests on twice the number of skeins or coils. The results of repeated tests spread to the entire party.

(Changed edition, Rev. N 1).

4. TEST METHODS

4.1. To control the mechanical properties of the wire, nabivanija, the uniformity of the zinc coating selected one sample from the roll or the outer end of the coil, and to control the surface density of the zinc is taken at least two samples. The sampling carried out not less than 0.5 m from one another.

(Changed edition, Rev. N 3).

4.2. Surface inspection is carried out visually without the use of magnifying devices.

4.3. Diameter and ovality of wire checked in two mutually perpendicular directions of the same section, not less than three places of a coil or on the outer end of the coil with a micrometer according to GOST 6507.

4.4. Test wire tensile is carried out according to GOST 10446.

4.5. The test of wire on the winding is carried out in accordance with the requirements of section 2.4 host 10447.

4.6. Surface density of zinc determine the volume-gasometrical or weighting methods, and the uniformity of zinc coating by immersion. The differences in the assessment of quality is applied the weight method.

The length of the sample to determine the surface density of zinc are shown in table.6.

Table 6

mm

Allowed to cut the specimen into sections.

4.6.1. Space-gasometrical method

4.6.1.1. Equipment

The dissolution of the zinc coating is carried out in a device consisting of a reservoir and connected to it with a rubber hose, a glass burette with two taps, or in the device, consisting of burettes and surge vessel. Tube surge vessel must be tightly prichert to the walls of the vessel, so that the released hydrogen could not push.

4.6.1.2. Preparing for the test

Before the test samples are measured, degreased with alcohol, gasoline or benzene and wipe with a clean cloth.

4.6.1.3. Testing

Testing of samples is carried out separately. Zinc coating dissolve when fully immersed sample in the following aqueous solution mixture of acids:

sulfuric according to GOST 4204 — 100 g/DM;

a salt according to GOST 3118 — 34 g/DMor in a solution of inhibited sulphuric acid: 2 g AsOor SbOis dissolved in 60 cmof hydrochloric acid density of 1.19 g/cmand 1 DM is pouredsulfuric acid concentration of 80 g/DM.

The zinc coating is dissolved at ambient temperature until the complete cessation of outgassing of hydrogen.

For each sample measure the amount of hydrogen contributing tot, and the arithmetic average of the volume lead to the normal conditions: pressure 101х10PA (760 mm Hg.St.), temperature 0 °C.

(Changed edition, Rev.

N 1).

4.6.1.4. Processing of the results

The average surface density of zinc (), g/m, is calculated by the formula

,

where is the arithmetic average of the volume of hydrogen under normal conditions, mm.

 — nominal wire diameter, mm;

 — length of sample, mm.

Surface density of zinc only a coil or coils is estimated by the arithmetic mean of the test results.

The average surface density of zinc is calculated to the nearest 0.1 g/m.

(Changed edition, Rev. N 3).

4.6.2. Weight method

4.6.2.1. Preparing for the test

Be test, the samples degreased with alcohol, benzene or gasoline and wipe with a clean cloth.

4.6.2.2. Testing

Prepared samples are weighed.

The zinc coating is dissolved in a solution of inhibited sulphuric acid of the composition specified in claim 4.6.1.3.

Samples were washed with distilled water and wipe with a clean cloth to remove moisture and weighed again. After the etching of zinc measured diameter of the specimen.

(Changed edition, Rev. N 3).

4.6.2.3. Processing of the results

Surface density of zinc (), g/m, is calculated by the formula

,

where is the mass of a sample or group of samples of wire to remove the coating, g;

 — the weight of a sample or group of samples of wire after removing the coating, g;

 — diameter of the sample wire after removing the coating, mm.

Value , determined to the nearest 0.001 g and 0.01 mm, the surface density of zinc, 0.1 g/m.

Surface density of zinc only a coil or coils is estimated by the arithmetic mean of the test results.

(Changed edition, Rev. N 1)

.

4.6.3. The immersion method

The uniformity of the zinc coating is controlled by immersion of the sample of galvanized wire in a solution of copper sulfate prepared by dissolving the same mass of a dry crystal of copper sulphate according to GOST 19347 five mass parts of distilled water. The solution is neutralized with an excess of freshly precipitated hydrate of copper oxide and filtered. The density of the filtered neutralized solution should be to 1,114 1,116 g/cm. The temperature of the copper sulphate solution during the test must be (18±2) °C.

The test procedure:

samples of the wire length of 150 mm was washed and degreased in alcohol, benzene, or ether. If the samples are washed with petrol or benzene, we carried out additional washing with distilled water and wipe to remove moisture;

immerse the samples in a solution of copper sulphate to a depth of not less than 100 mm. Samples of wire shall be in solution in stationary position, not in contact with each other and with the walls of the vessel. The same solution of copper sulphate with a volume of 200 cmcan be used for testing specimens of the same diameter, the number of which depending on the wire diameter shown in table.7, after which the solution should be replaced.

Table 7

After immersion in the solution, samples were washed with distilled water. Samples considered satisfactory if, after the dive on the surface has no areas with the removed zinc and coated in copper, not coming down when wiping with cotton wool or a clean cloth. Examine the samples visually.

On the surface of samples allow:

redness of the surface samples in the area, located at a distance of 25 mm from the solution level and at a distance of 20 mm from the immersed in the solution of the lower ends of the samples;

brown color and the redness of point character, disappearing or increasing in size and brightness with additional immersion of the samples in a solution of copper sulfate at 1−2;

the heterogeneity of the surface of the wire color and luster.

(Changed edition, Rev. N 1, 3).

5. PACKING, MARKING, TRANSPORTATION AND STORAGE

5.1. The wire should be coated with a thin layer conservation and oil type НГ203 brands a And B on the EAST 38.01436 or K-17 GOST 10877, GSD and GSD-1 according to TU 38. USSR 201215. It permitted the use of preservative oils of a different type, protecting the wire from corrosion. Customer’s request wire not covered with grease.

(Changed edition, Rev. N 2).

5.2. Oiled coils, the wire diameter is 0.6 mm and less shall be wrapped with a layer of paper and Packed in wooden boxes type II according to GOST 18617 or other wooden crates in the normative documentation.

Hanks ungreased wire with a diameter of 0.6 mm and less shall be wrapped with a layer of paper and Packed into bags from polymer film, which are then brewed and placed in wooden boxes of the type II according to GOST 18617 or other wooden crates in the normative documentation. Bags are to be placed silicagel according to GOST 3956 in number the rate of 300 g per 1 msurface of the bag.

Hanks lubricated and non lubricated wire with a diameter of more than 0.6 mm shall be wrapped with a layer of paper, then a layer of polymeric film or fabric.

Hanks ungreased wire diameter: 0.8 and 1.0 mm are allowed to be Packed in wooden boxes without packaging in packaging materials.

The quality of packaging materials used:

the waxed paper according to GOST 9569 (you may use wrapping paper 8828 churchyard or other paper in the normative documentation that provides protection against corrosion);

the film according to GOST 10354, GOST 16272 or other tape according to normative documentation;

fabric packaging technical assignment GOST 5530;

container holstoproshivny or laminated cloth according to normative documentation;

fabric from chemical fibers and stitched strip of waste textile industry for regulatory documents.

Wire that is sent to the far North and remote areas, Packed in accordance with GOST 15846.

When mechanized packaging a coil of wire must be wrapped with a layer of crepe paper according to GOST or other 10396 crepe paper, equal in protective properties, or a polymer film according to the normative documentation to secure the package.

(Changed edition, Rev. N 1,3).

5.3. Coils of wire of the same diameter, one steel grade and one coverage group is allowed to associate in the Bay.

Each skein and the Bay should be tied with annealed wire churchyard 3282 or other heat-treated wire according to the normative documentation in at least three places evenly spaced around the circumference of a coil (coils).

The ends of the wire on the roll must be neatly stacked and easy to find.

Coils of wire with a diameter of 1.0 mm and less is allowed to bind the free end of the wire coil or wire round.

5.4. Coils shall be Packed in double-layer wrapping paper according to GOST 8828 or waxed — GOST 9569 and Packed in wooden boxes type II according to GOST 18617 or other wooden boxes on standard documentation, lined inside, double-layered wrapping paper according to GOST 8828.

Allowed the transport of coils in containers.

5.3, 5.4. (Changed edition, Rev. N 1).

5.5. The weight of each package should not exceed 80 kg allowed weight of cargo space, more than 80 kg.

Consolidation packages in overpacks — GOST 24597, GOST 21650.

(Changed edition, Rev. N 1, 3).

5.6. To each coils, the coil or the Bay in a package shall be securely attached a label, which indicate:

trademark or the name and trademark of manufacturer;

symbol wire;

stamp of technical control;

batch number.

On the label attached to the coil must be configured with the number of segments.

5.7. When packing coils, coils, or coils of wire in the boxes each box must be specified:

trademark or the name and trademark of manufacturer;

symbol wire;

net weight;

the number of skeins or coils;

stamp of technical control;

batch number.

5.8. Wire is transported by all kinds of transport in covered vehicles in accordance with cargo carriage regulations applicable to transport of this species.

Transport via Railways — carriages, light trucks and small shipments.

Allowed the transport of wire in universal containers according to GOST 15102,20435 GOST, GOST 22225. Conditions of transportation of wire in the impact of climatic factors should correspond to conditions 5 GOST 15150.

5.9. Storage of wire — under the terms of 3 to GOST 15150.

5.6−5.9. (Changed edition, Rev. N 1).

5.10. Transport marking under GOST 14192.

(Added, Rev. N 1).

6. MANUFACTURER’S WARRANTY

6.1 the Manufacturer guarantees that the galvanized steel wire for booking electrical wire and cable requirements of this standard when complying with the storage conditions.

6.2. Guaranteed storage life of wire — 6 months from the date of manufacture.

Sec. 6. (Added, Rev. N 1).