GOST 18846-73
GOST 18846−73 Foil zinc. Technical specifications (Changes No. 1−4)
GOST 18846−73
Group В53
STATE STANDARD OF THE USSR
FOIL ZINC
Specifications
Zinc foil. Specifications
GST 18 3140
Valid from 01.01.75
to 01.01.95*
______________________________
* Expiration removed
Protocol N 4−93 inter-state Council
for standardization, Metrology and certification.
(IUS N 4, 1994). — Note the CODE.
INFORMATION DATA
1. DEVELOPED AND INTRODUCED by the Ministry of nonferrous metallurgy of the USSR
DEVELOPERS:
Sawakin Y. F., doctor of engineering. Sciences; M. B. Taubkin, PhD. tech. Sciences; Z. I. Potapenko
2. APPROVED AND promulgated by the Decree of the State Committee of standards of Ministerial Council of the USSR from
3. INTRODUCED FOR THE FIRST TIME
4. REFERENCE NORMATIVE AND TECHNICAL DOCUMENTS
The designation of the reference document referenced |
Item number |
| GOST 427−75 |
4.2 |
| GOST 891−75 |
5.3 |
| GOST 2991−85 |
5.3 |
| GOST 3282−74 |
5.4 |
| GOST 3560−73 |
5.4 |
| GOST 3640−79 |
2.1 |
| GOST 6507−90 |
4.2 |
| GOST 7376−89 |
5.3 |
| GOST 9557−87 |
5.4 |
| GOST 9569−79 |
5.1 |
| GOST 11701−84 |
4.4 |
| GOST 14192−77 |
5.5 |
| GOST 17065−77 |
5.3 |
| GOST 17261−77 |
4.5 |
| GOST 19251.0−79 — GOST 19251.6−79 |
4.5 |
| GOST 21140−88 |
5.3 |
| GOST 24231−80 |
4.5 |
| GOST 24597−81 |
5.4 |
5. VALIDITY EXTENDED until
6. REISSUE with Amendments No. 1, 2, 3, 4, approved in February 1979, December 1983, August 1986, March 1989 (IUS 4−79, 3−84, 11−86, 6−89)
This standard applies to zinc foil, designed for power sources for special purposes.
1. ASSORTMENT
1.1. Dimensions and limit deviations of foil shall be as specified in the table.
mm
Thickness |
Width |
Length, not less than | ||
| Nomin. |
Pred. off. | Nomin. | Pred. off. | |
| 0,07 |
±0,01 | 240 | ±1,0 | 3000 |
| 0,07 |
±0,01 | 420−480 | ±1,0 | 3000 |
| 0,09 |
±0,01 | 420−450 | ±1,0 | 3000 |
The symbol stamped on the scheme:
Abbreviations:
manufacturing method: cold — D
sectional shape: rectangular.
the missing metric — X
Example of designation of the foil is cold-deformed, rectangular section, thickness 0.07 mm, width 480 mm, zinc brand TSO
Foil DPRK 0,07480НД TSO GOST 18846−73
(Changed edition, Rev. N 2).
2. TECHNICAL REQUIREMENTS
2.1. The foil must be manufactured in accordance with the requirements of this standard for technological regulations approved in the prescribed manner, of zinc brand TSO with the chemical composition according to GOST 3640−79.
(Changed edition, Rev. N 2).
2.2. Foil surface should be clean and smooth, without the captured, bubbles, tears, dents, nicks, corrosion, and foreign debris.
On the foil are permitted waviness, small prints from rolls and isolated small holes that are visible against the light, in the absence of stroke location.
Allowed the quality of the surface to install the samples approved in the established order.
(Changed edition, Rev. N 4).
2.3. Foil must be cleaned from the technological lubricant.
Allowed on the foil traces of grease.
(Changed edition, Rev. N 2).
2.4. The foil should be wound on a sleeve with an inner diameter of 34 mm and outer diameter not exceeding 38 mm. sleeve Length should be equal to the width of foil with maximum deviation of ±1 mm.
(Changed edition, Rev. N 2, 4).
2.5. The rewind diameter should be from 50 to 200 mm.
In coordination with the consumer the diameter of the wound roll must be not more than 150 mm.
(Changed edition, Rev. N 4).
2.6. The number of segments in the coil should be no more than four. The length of individual segments must be at least 3 m.
2.7. The foil should be trimmed evenly. The ends of the coils should not have nicks, dings and dirt.
2.8. The foil should be wound with tension, not allowing the loss of the sleeve and offset coils, and free to Mosey along the entire length of the roll.
By agreement with the consumer allowed the displacement of the coils in the ends of the roll not more than 2 mm.
(Changed edition, Rev. N 4).
2.9. Rupture strength of the foil along the direction of rolling () should not be less than 70 MPa (7 kgf/mm
).
2.10. The foil must be corrosion-resistant.
When tested in the foil on the corrosion resistance in a solution of 8.5 NKOH+0,22 NZnO within three days, the amount of released hydrogen with 3 DMthe surface of the foil should be no more than 8 cm
.
2.9, 2.10. (Changed edition, Rev. N 2).
3. ACCEPTANCE RULES
3.1. Foil take parties.
The party should consist of a foil of the same brand zinc, the same size and decorated the same document about quality that contains:
trademark or a trademark and the name of the manufacturer;
the symbol foil;
the results of the tests (at the request of the consumer);
batch number;
the weight of the batch.
The mass of the Desk should be no more than 6000 kg.
(Changed edition, Rev. N 2, 4).
3.2. (Deleted, Rev. N 2).
3.3. Check the appearance and dimensions are subjected to every roll of the party.
(Changed edition, Rev. N 2).
3.4. For testing the foil on the corrosion resistance of the selected three rolls of each complete and incomplete 4000 kg.
3.5. For testing tensile foil from the party selected 2% of the rolls (by weight), but at least three coils from each complete and incomplete 4000 kg.
3.6. To determine the chemical composition of the foil from the party select 3% of the rolls (by weight), but at least three coils from each complete and incomplete 4000 kg. allowed the manufacturers to control chemical composition from the molten metal.
3.5, 3.6. (Changed edition, Rev. N 4).
3.7. If unsatisfactory test results foil on at least one indicator thereon, a second test of the doubled sample taken from the same batch. The results of repeated tests apply to the entire party.
(Changed edition, Rev. N 2).
4. TEST METHODS
4.1. The surface quality control foil should be made visually without the use of magnifying devices.
4.2. The thickness of the foil is measured at a distance of not less than 100 mm from the end and not less than 10 mm from the edge of the micrometer according to GOST 6507−90. The width of the foil is measured with a metal ruler according to GOST 427−75.
You can define the size of the foil other tools for the precision of the measurement.
4.3. For testing the foil on the corrosion resistance of each of the selected rolls select four samples of a width equal to the width of the foil, and a length of 400 mm. the Test is carried out according to the method given in the Appendix.
(Changed edition, Rev. N 4).
4.4. For testing tensile foil from each of the selected coils cut off a piece of the foil length up to 0.5 m for sample making. The test is carried out according to GOST 11701−84 on samples of type II C =12.5 mm and
4.5. Chemical analysis carried out according to GOST 19251.0−79 — GOST 19251.6−79 on a single sample taken from each roll.
Selection and preparation of samples for the determination of chemical composition is carried out according to GOST 24231−80.
Allowed chemical analysis according to GOST 17261−77.
If there is disagreement in the assessment of the chemical composition analysis is carried out according to GOST 19251.0−79 — 19251.6 GOST-79.
(Changed edition, Rev. N 2, 3).
5. PACKING, MARKING, TRANSPORTATION AND STORAGE
5.1. Each roll of foil width and the ends must be Packed in paraffined paper GOST 9569−79.
At the request of the consumer the rolls of foil can be Packed in polyethylene covers instead of paraffined paper GOST 9569−79.
5.2. Each roll shall be labeled indicating:
a) the trademark or of the trademark and name of the manufacturer;
b) the legend foil;
C) the batch number;
g) the stamp of technical control;
d) designation of this standard;
e) mark of the technical control of the manufacturer.
5.3. The rolls of foil should be Packed in wooden boxes type III-2 according to GOST 2991−85, inside lined with waxed paper. When packing in boxes each roll of foil is put on a wooden core, reinforced with inserts in the box. It is possible to stow rolls of foil in drawers without rods while protecting the foil from mechanical damage.
To protect the ends of rolls from scratches, nicks, scuffs and dents each roll shift cushioning material according to GOST 891−75 or GOST 7376−89.
Dimensions of boxes — GOST 21140−88 or according to normative-technical documentation approved in the established order.
Allowed the transport of zinc foil in railway containers with the laying of each row of the cushioning material.
In the sphere of automobile transport packaging zinc foil in the container of a drum type according to GOST 17065−77.
By agreement with the consumer packaging foil in consumer packaging.
5.4. Consolidation packages in overpacks shall be conducted in accordance with the requirements of GOST 24597−81.
Packaging is carried out on pallets according to GOST 9557−87 or without pallets with the use of bars with a height of not less than 50 mm with strapping in the longitudinal and transverse directions with wire of diameter not less than 2 mm according to GOST 3282−74 or tape sizes not less than 0.3to 30 mm according to GOST 3560−73. Bond tips: twist the wire at least 5 turns, a feed — lock.
Mass of package not exceeding 500 kg.
5.5. Transport marking of packages and methods of its application should be carried out according to GOST 14192−77 with application of manipulation signs «Afraid of dampness» and «Caution, fragile."
5.1−5.5. (Changed edition, Rev. N 2).
5.6. (Deleted, Rev. N 2).
5.7. Transportation of the foil is carried out by all kinds of transport in covered vehicles in accordance with cargo carriage regulations applicable to transport of this species.
(Changed edition, Rev. N 2).
5.8. Zinc foil is stored in covered warehouses that protect the foil against mechanical damage, moisture and active chemical substances.
APP (mandatory). METHODS of SAMPLING AND TESTING TO determine the CORROSION resistance of ZINC foil with a THICKNESS of 0.07 mm
APP
Mandatory
1. From each sample, cut out one plate size 100x150 mm (Fig.1).
Damn.1
Damn.1
2. Each plate is cut into four pieces the size of 25х150 mm (see the devil.1), which roll into a roll and subjected to chemical degreasing in a solution of composition:
NaRO
b/ — 50−60 g/l;
liquid glass 8−10 g/l.
3. Degreasing is recommended to keep in a glass beaker with a capacity of 300−350 ml at 60−80 °C for 3 min. Defatted samples were washed first in running hot water (70−80 °C) for 3 min, then in cold running water for 3 min.
4. The test is carried out at a temperature of 20±5 °C in a solution of composition:
CON 470−490 g/l;
ZnO — 13−18 g/L.
Allowed the accumulation in the solution
ToWITH
to 20 g/l;
Fe to 0.0006 g/L.
Prepared samples were washed five times by immersion into free volume of alkali, each sample is separately placed on the bottom of the glass with a capacity of 500−700 ml and cover the top glass funnel with a diameter of 55−65 mm so that the funnel sat on the bottom of the beaker, not resting on a sample.
The alkaline solution was poured (Fig.2) in a glass vessel 3 so that the upper part of the funnel glass 4 appeared under the solution, then in the burette 1, wearing a cap made of Plexiglas 2.
Damn.2
1 — burette with divisions of 25−50 ml; 2 — cover of Plexiglas;
3 — glass vessel with a capacity of 0.5−0.75 l; 4 — glass funnel
with a diameter of 55−65 mm; 5 — the test foil (roll height 30−25 mm
with a diameter of 30−40 mm)
Damn.2
The burette is inverted and put on the funnel 4. Mark the solution level in the burette, which in the future are counting.
Notes:
1. All work with alkali is carried out in rubber gloves.
2. Use an alkaline solution for 10 tests.
3. The solutions were prepared in distilled water.
4. Reagents for solution preparation take is not below the qualification of «clean».
(Changed edition, Rev. N 1).
5. At the same time carry out tests of corrosion resistance of the three samples (one from each sheet).
6. Count the number of released hydrogen is carried out in three days.
7. (Deleted, Rev. N 2).
The text of the document is verified by:
the official publication of the
Assortment of non-ferrous metals.
Flat rolled. Part 1. Volume 2. SB. Standards. -
M.: standards Publishing house, 1993
