GOST 16100-79

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  ГОСТ 16100-79

GOST 16100−79 Niobium in STUBICA. Specifications (with Amendments No. 1, 2)

GOST 16100−79*

Group W51

INTERSTATE STANDARD

NIOBIUM IN STABIKA

Specifications

Niobium bricks. Technical requirements

GST 17 6331

Date of introduction 1981−01−01

Resolution of the USSR State Committee for standards from 08.06.79 N 2090 date of introduction is established 01.01.81

Limitation of actions taken by Protocol No. 5−94 of the Interstate Council for standardization, Metrology and certification (ICS 11−12−94)

REPLACE GOST 16100−70

* Edition with Amendments No. 1, 2 approved in July 1985, September 1989 (IUS 10−85, 1−90)


This standard applies to niobium rods, designed for the production and alloying of alloys and other purposes.

(Changed edition, Rev. N 2).

1. BRAND AND ASSORTMENT

1.1. Niobium rods are made in three grades: 00 SNB, SNB SNB 0 and 1.

OKP codes are given in the Appendix.

1.2. Niobium shtabikov dimensions and tolerances should conform to the standards specified in table.1.

Table 1

Note. Allowed in parties of up to 25% shtabikov length less than 400 mm 22x60 cross-section and length less than 300 mm in other sections.

1.1, 1.2. (Changed edition, Rev. N 2).

2. TECHNICAL REQUIREMENTS

2.1. Niobium rods shall be manufactured in accordance with the requirements of this standard in accordance with technical documentation approved in the established order.

(Changed edition, Rev. N 2).

2.2. Mass fraction of impurities in the niobium stabika must conform to the standards specified in table.2.

Table 2

(Changed edition, Rev. N 1).

2.3. Soggy ends Starikov needs to be removed.

Cracks and delamination at the ends shtabikov not allowed.

2.4. On the surface shtabikov should be no swellings, cracks, and grease.

Allowed scree rib on shtapikah.

(Changed edition, Rev. N 2).

2.5. (Deleted, Rev. N 1).

2.6. The amount of twisting one end relative to the other rod billet should not exceed 6.5 mm for a length of 1 m.

2.7. The deflection rod billet should not exceed 6.5 mm for a length of 1 m.

3. ACCEPTANCE RULES

3.1. Niobium rods take parties. The party should consist of shtabikov made from the same batch of powder, one brand and one cross-section and decorated with a single instrument of quality in which you specify:

is the trademark or name and trademark of manufacturer;

— material name and its brand;

— the batch number;

— the net weight;

the cross — sectional dimensions of shtabikov;

— test results;

— the number of seats in the party;

— date of manufacture;

— the stamp of the technical control Department;

— the designation of this standard.

One copy of the document on quality invest in a cargo space N 1.

For shtabikov intended for long-term storage, the document certifying their quality, is put in every box.

(Changed edition, Rev. N 1).

3.2. The cross-sectional size, length, deflection, and the amount of twisting is controlled at each stabika.

3.3. To control chemical composition selected 5% shtabikov within the party.

(Changed edition, Rev. N 1).

3.4. If unsatisfactory results of chemical analysis on at least one of the indicators conducted a re-test of the doubled sample.

The results of repeated checks apply to the entire party.

(Changed edition, Rev. N 2).

4. TEST METHODS

4.1. The cross-sectional size and length shtabikov control metal ruler according to GOST 427−75.

4.2. Sampling

4.2.1. A sample taken from shtabikov in the form of chips and pieces.

4.2.2. Spot samples of the chips are taken from both ends of the rod billet on a lathe. The mass of the spot samples should be not less than 30 g.

Single samples of the chip are combined and averaged. The mass of the joint sample shall be not less than 60 g.

4.2.3. Spot samples are pieces taken chisel in locations of the sampling chip. The mass point of the sample pieces shall be not less than 3 g.

Sample pieces taken before or after sampling the chips.

One-off sample pieces are combined and averaged.

The mass of the joint sample pieces shall be not less than 40 g.

4.2.2, 4.2.3. (Changed edition, Rev. N 1, 2).

4.2.4. The combined sample is divided into two equal parts.

Each part of the sample was placed in glass jars with ground stoppers or screw caps, or in bags made of polyethylene film GOST 10354−82, which are knotted or welded, and then Packed in bags made of a paper sack according to GOST 2228−81.

The label, which indicate the cipher of production, batch number, number of samples, date of sampling, name of the controller, placed between layers of bags or put in the Bank.

(Changed edition, Rev. N 2).

4.3. One part of the sample chips and one part of the sample pieces sent to the laboratory for analysis.

The second part of the sample kept at the factory for 3 months.

4.4. Chemical composition analysis shtabikov carried out according to GOST 22720.0−77-GOST 22720.4−77, GOST 18385.0−89, GOST 18385.1−79-GOST 18385.4−79.

(Changed edition, Rev. N 2).

4.5. The lack shtabikov at the ends of cracks and delamination check by visual inspection.

4.6. The quality condition of surface shtabikov checked by visual inspection.

4.7. (Deleted, Rev. N 1).

4.8. The amount of twisting shtabikov check on the surface plate or straightedge ruler with a set of probes for NTD.

4.9. The deflection rod billet () in mm check with a set of probes according to the NTD on the surface plate or straightedge ruler and calculated by the formula

,

where is the length of the rod billet, mm;

The 6.5 — permissible bending deflection;

1000 — constant coefficient.

4.8, 4.9. (Changed edition, Rev. N 2).

5. MARKING, PACKAGING, TRANSPORTATION AND STORAGE

5.1. Each rod billet labeling with grade and batch number. The markings on the rod billet is applied to the stigma.

5.2. Rods are Packed in bundles weighing no more than 30 kg.

Each pack is Packed in sack paper according to GOST 2228−81 and placed in stout wooden boxes of types I-III according to GOST 2991−85.

The free space in the boxes after stacking them shtabikov fill of wood shavings or sawdust.

The gross weight of the box should be no more than 40 kg.

Boxes must be banded with a metal band to GOST 3560−73 or wire according to GOST 3282−74.

Packaging shtabikov of niobium in metal pallet box of the type according to normative-technical documentation.

Gross weight of the pallet should be not more than 400 kg.

5.3. Transport marking — according to GOST 14192−96 with additional inscriptions:

— trademark or name and trademark of manufacturer;

— name and brand or cipher products;

— batch number;

— manipulation sign «Protect from moisture»;

the designation of the present standard.

5.2, 5.3. (Changed edition, Rev. N 1, 2).

5.4. Rods of niobium is transported by railway or air transport in accordance with cargo carriage regulations applicable to transport of this species.

(Changed edition, Rev. N 1).

5.5. Niobium rods Packed in wooden crates or pallets metal box-type, train transport is transported in universal containers according to GOST 18477−79 or small shipments in boxcars.

When transporting products, Packed in wooden boxes, conduct the packaging of the goods according to GOST 26663−85 flat universal pallets according to GOST 9557−87или GOST 26381−84 with strapping steel tape according to GOST 3560−73 or wire with diameter not less than 5 mm according to GOST 3282−74. Overall dimensions and weight of the package — according to GOST 24597−81.

(Changed edition, Rev. N 2).

5.6. Rods stored in the manufacturer’s packaging in covered warehouses of the consignor or consignee in the absence of vapors of acids and alkalis.

5.7. (Deleted, Rev. N 1).

APP (mandatory). OKP codes

APP
Mandatory

APP. (Changed edition, Rev. N 2).