GOST 15146-69

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  ГОСТ 15146-69

GOST 15146−69 Ribbon steel heat treated for voice reeds of musical instruments. Specifications (with Amendments No. 1, 2, 3)

GOST 15146−69
Group B34

INTERSTATE STANDARD

RIBBON STEEL HEAT TREATED FOR
VOICE REEDS OF MUSICAL INSTRUMENTS

Specifications

Thermal-treated steel tape for musical instrument reeds.
Specifications

OKP 12 3100

Date of introduction 1971−01−01

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 Committee of standards, measures and measuring devices under Council of Ministers of the USSR from 25.12.69 N 1385

3. INTRODUCED FOR THE FIRST TIME

4. REFERENCE NORMATIVE AND TECHNICAL DOCUMENTS

5. Limitation of actions taken by Protocol No. 3−93 Interstate Council for standardization, Metrology and certification (ICS 5−6-93)

6. EDITION with Amendments No. 1, 2, 3 approved in December 1982, June 1988, February 1989 (IUS 4−83, 11−88, 5−89)


This standard applies to heat-treated steel tape for the manufacture of voice the reeds of musical instruments.

1. CLASSIFICATION AND ASSORTMENT

1.1. Tape made:

accuracy of manufacturing according to the thickness:

normal exactly

increased accuracy — FRI;

temporary resistance and globcast;

class A,

class B.

1.2. The thickness and width of the tape and limit deviations thereon shall be as given in table.1.

Table 1

mm

Examples of symbols

Ribbon class B-normal accuracy in thickness of 0.35 mm:

Tape B-0,35 GOST 15146−69

Tape class A high accuracy of thickness 0.50 mm:

Tape A-FR-0.50 GOST 15146−69

Sec. 1. (Changed edition, Rev. N 2).

2. TECHNICAL REQUIREMENTS

2.1. The tape shall be manufactured in accordance with the requirements of this standard for technological regulations approved in the prescribed manner, of steel grade according to GOST U10A 1435−90*.
_______________
* On the territory of the Russian Federation GOST 1435−99. — Note the manufacturer’s database.

2.2. Tensile strength, angle of pruinosity and number inflections of the tape shall be as given in table.2.

Table 2

Test the tape on the bend is performed periodically at the request of the consumer.

2.1, 2.2. (Changed edition, Rev. N 2).

2.3. The tape must be thermally processed. Microstructure of the ribbon — martensite is not more than the 5th score on the scale 3 GOST 8233.

(Changed edition, Rev. N 1).

2.4. The tape surface should be colorsound, color from light yellow to blue. The roughness parameter of the surface should not be more than 0.63 mm according to GOST 2789.

At the request of the consumer, the tape shall be manufactured of blue.

(Changed edition, Rev. N 2).

2.5. On the surface of the tape should not be sunsets, bundles, scratches and rust. Allowed fine longitudinal scratches, sinks, risks, and prints from the rolls, the depth or height of which does not exceed half of thickness tolerance.

2.6. The strip edges should be cut off. On the edges of the belt should be free of flaws, cracks, and burrs. Allowed on the cutting edge roughness value is not more than half the tolerance width.

2.7. Camber strips shall not exceed 2 mm per 1 m length of the tape.

(Changed edition, Rev. N 2).

2.8. Globcast tape must not exceed:

0.3 mm — for tapes of the class A,

0.5 mm — for tapes of class B.

(Changed edition, Rev. N 2, 3).

2.9. The tape shall be manufactured in coils with internal diameter not less than 300 mm.

At the customer’s request internal diameter of coil shall be not less than 500 mm.

(Changed edition, Rev. N 1).

2.10. (Deleted, Rev. N 1).

3A. ACCEPTANCE RULES

3A.1A. Rules of acceptance GOST 7566.

(Added, Rev. N 2).

3A.1. The ribbon take parties. The party should consist of tape one trunks, one size, one mode of heat treatment in continuous furnaces and accompanied by a document about quality that contains:

trademark or the name and trademark of manufacturer;

the symbol of the tape:

grade of steel;

batch number;

stamp of technical control.

(Changed edition, Rev. N 2).

3A.2. Inspection appearance and dimensions shall be subjected to each coil of the party.

3A.3. From the party of the ribbon should be selected:

5% rolls, but at least two of the coils, to test a temporary resistance, number of bends and angle of pruinosity;

3% rolls, but at least two rolls to check for camber, globcast and roughness parameter of the surface;

2% rolls, but not less than two rolls, to control the microstructure.

(Changed edition, Rev. N 2).

3A.4. If unsatisfactory test results of at least one of the indicators, it conducted a re-test at twice the sample.

The results of repeated tests apply to the entire party.

Sec. 3A. (Added, Rev. N 1).

3. TEST METHODS

3.1. (Deleted, Rev. N 1).

3.2. The thickness of the tape measure with micrometers (GOST 6507 or GOST 4381), optymetramy and other measuring instruments of appropriate accuracy.

The tape width measured with calipers (GOST 166).

The thickness of the strip is measured at a distance of not less than 5 mm from the edge of the tape. The surface quality and edge inspect without using the magnifying devices. Allowed the use of a magnifying glass zoom 5.

(Changed edition, Rev. N 2, 3).

3.3. The surface roughness and the depth of defects is determined by the profiling-profilers (GOST 19300), optical devices (GOST 9847) and other means of measuring the respective accuracy.

(Changed edition, Rev. N 2).

3.4. From the party adopted by visual inspection and measurement are selected:

a) to test the temporary tear resistance, number of bends and angle of progenote — 5% rolls, but at least two rolls;

b) to check Rebrovo curvature and globcast — 3% rolls, but at least two rolls;

C) for the control of microstructure — a 2% rolls, but at least two rolls.

For each type of test should be taken one sample from each selected bale.

3.5. To determine the temporary tear resistance, angle of pruinosity and the number of bends from the middle of the tape (width) cut out a sample width of 20 mm (type II according to GOST 11701).

Edges of samples before testing should be thoroughly cleaned.

3.6. Test of rupture strength is carried out according to GOST 11701.

3.7. The test bend is carried out according to GOST 13813. The length of the bending lever of the device must correspond to the specified in table.3.

Table 3

mm

(Changed edition, Rev. N 2).

3.8. The angle of pruinosity check on the unit construction of the Leningrad steel plant in the following manner: one end of the sample clamped in the jaws of this device so that when the test sample did not touch the scale device (model needs to defend from the surface of the scales 2−4 mm). The other free end needs to be in a position to edge it coincides with the scale division «180°" (see diagram, position I). This allowed the straightening of the specimen by hand uniformly along its length. Via a lever sample bend through the mandrel through 180° so that the edge of the free end coincides with the scale division «0» (see diagram, position II). Then the lever is withdrawn to its original position smoothly, without interruption, during at least 10 seconds. The vacant end of the sample in force in the elastic properties is a new position (see diagram, position III).

The test configuration of tape on proginet

The value of the scale division which coincides with the same edge of the sample, determines the magnitude of the angle of pruinosity.

The angle of pruinosity produced with an accuracy of 1°.

Note. Appliances of the customer should check with the devices manufacturer.

3.9. Control of the microstructure produced according to GOST 8233.

3.10. Camber strips shall be checked by the overlapping edges of tape sample length of 1 m with a straight line. The measurement is performed with a ruler (GOST 427) in the place of greatest curvature.

(Changed edition, Rev. N 2).

3.11. Globcast tape is determined by optimera or device for measuring globcast (design engineer Fedorov N. M.) with a scale division of the measuring head is not more than 0.01 mm.

When tested on optimate tape is laid on flat table device with a width of 1−2 mm narrower than the tape, and check globcast in two positions: convex upward and convex downward. The difference of the readings gives the value of globcast.

When measuring globcast on the device Fedorova sample is in limbo and rests on a radial line; the difference between the measurements when the support of the tape edges along with support the top of the gutter yields the value of globcast.

3.12. Chemical composition of steel is certified by a certificate provider metal. If necessary, the chemical composition of the metal strip is determined in accordance with the requirements of GOST 22536.0 to GOST 22536.9.

(Changed edition, Rev. N 1).

3.13, 3.14. (Deleted, Rev. N 2).

4. MARKING, PACKAGING, TRANSPORTATION AND STORAGE

4.1. (Deleted, Rev. N 2).

4.2. Each roll of ribbon should be tied in at least three places soft metal ribbon or wire according to GOST 3560, GOST 3282 or other regulatory-technical documentation.

4.3. The tape should be coated with a thin layer of inhibited lubrication, which protects the tape against corrosion.

Types of greases: a mixture of GSD and industrial oil-12A AND I-20A GOST 20799 in the ratio of 1:1 mixture of NG-or NG 203A-203B for OST 38.01436 and industrial oil-12A AND I-20A in a ratio of 1:1. Allowed other types of lubricants and other related components that provide protection against corrosion.

4.2, 4.3. (Changed edition, Rev. N 2).

4.4. The rolls wrapped with waterproof paper according to GOST 8828, waxed GOST 9569*, oiled according to GOST 8273 or other protecting from corrosion, according to normative-technical documentation, then a layer of fabric — container holstoproshivny cloth or other kind of packing tissue, degrading the quality of the packaging (except for cotton and linen fabrics), according to normative-technical documentation, as well as a stitched flap from the waste of the textile industry. After that, the rolls tied with soft wire or tape according to normative-technical documentation.
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* On the territory of the Russian Federation GOST 9569−2006. — Note the manufacturer’s database.

In coordination with the consumer the rolls, wrapped in waterproof paper, must be Packed in a wooden or metal container, lined with waterproof paper.

(Changed edition, Rev. N 1, 2).

4.5. Gross mass of a Packed place tape should not exceed 80 kg.

4.6. The tape is sent to the far North and remote areas shall be in accordance with the requirements of this standard.

4.7. To each roll or the cargo should be attached a label showing:

the trademark or name and trademark of manufacturer;

the legend of the tape;

the steel grade;

batch number;

stamp of technical control.

4.8. Transport marking under GOST 14192.

4.9. Tape transporterowych small shipments by all kinds of transport in covered vehicles in accordance with cargo carriage regulations applicable to transport of this form, or in universal containers according to GOST 15102, GOST 20435 host 22225.

Consolidation packages should be made in accordance with the requirements of GOST 21650, GOST 24597 and goods transportation regulations approved by the relevant departments.

4.10. Tape should be stored in closed warehouses.

4.6−4.10. (Added, Rev. N 2).