GOST 25003-81

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  ГОСТ 25003-81

GOST 25003−81 cutting Inserts, indexable faceted ceramic. Specifications (with Amendments No. 1, 2, 3)

GOST 25003−81

Group 56

INTERSTATE STANDARD

CUTTING INSERTS, INDEXABLE FACETED CERAMIC

Specifications

Ceramic indexable throw-away inserts for cutting tools. Specifications

ISS 25.100
77.160

OKP 19 7610

Date of introduction 1982−07−01

Resolution of the USSR State Committee for standards, dated November 20, 1981 N 5052 date of introduction is established 01.07.82

The expiration time limit is removed by the Resolution of Gosstandart of the USSR from 11.10.91 N 1684

EDITION with Amendments No. 1, 2, 3, approved in April 1985, November 1986, April 1987 (IUS 7−85, 2−87, 8−87).


This standard applies to multifaceted ceramic plate mechanically attached to the cutting tool.

(Changed edition, Rev. N 1, 3).

1. NOTATION

1.1. Numeric and alphanumeric designations of plates according to GOST 19042−80.

1.2. The symbol plates when ordering with the all-Union classifier of products (OKP).

The complete code of OKP legend plates consists of 16 characters, the first six of which (code VCG OKP) is a brand of ceramics, the following four characters (code batch-sequence number GST) — the shape of a plate, the last six digits of the size of the plates. For plates with non-standard chamfer, a conventional digital designation consists of 18 characters, 2 where the last character indicates the cipher width and chamfer angle and separated by a hyphen. Code VCG (the highest classification group) OKP for ceramics grades:

Code batch-sequence number of ECVs for plates specified in the table.1.

Table 1

The last six digits of the legend is given in table.2, 3, 4, 5.

The number, width and angle of inclination of the chamfer for plates with non-standard chamfer is listed in table.7.

(Changed edition, Rev. N 1, 3)

1.3. Example of designation when ordering the plate, the right triangular shape of ceramic stamps wok-60 class U, with cutting edge length =16,5 mm, thickness =4.76 mm, radius =0.3 mm:

19 7612.

0352.160

403 GOST 25003−81

The same plate with the chamfer with a width of 0.4 mm and an angle of 30°:

19 7612.

0352.160403−24 GOST 25003−81

The same ceramic plates-3:

19 7611.

0352.160

403 GOST 25003−81

1.4. Approximate weight plates provided in the application.

2. TYPES OF PLATES

2.1. Plates should be made of the types listed in table.1.

3. THE DESIGN AND DIMENSIONS

3.1. The design and dimensions of plates shall be as specified in the hell.1−4, 4A, 4B, 4C and table.2−5, 5A, 5B, 5C.

Damn.1

________________

* Size for reference.

Damn.2

________________

* Size for reference.

Table 2

mm

Table 3

mm

Damn.3

________________
* Size for reference.

Table 4

mm

Damn.4

Table 5

mm

Damn.4A

________________
* Size for reference.

Damn.4B

________________
* Size for reference.

Table 5A

mm

Table 5B

mm

Damn.4B

________________
* Size for reference.

Table 5B

mm

(Changed edition, Rev. N 1, 3).

3.2. Allowed to produce plates with all forms =7.94 mm instead of 8.00 mm, =2.4 mm instead of 2.5 mm =3.2 mm instead of 3.0 mm.

(Added, Rev. N 1).

4. TECHNICAL REQUIREMENTS

4.1. Plates shall be manufactured in accordance with the requirements of this standard working drawings, approved in the prescribed manner.

4.2. Plate material, — cutting ceramics brands VOK-60, b-3, and marks the SAI-71 GOST 26630−85.

(Changed edition, Rev. N 2, 3).

4.3. Plates shall be manufactured of two classes:

U — ground at the base and rear surfaces;

G — ground at the base and rear surfaces with tighter tolerances.

4.4. Maximum deviations of controlled parameters of the plates shall conform to the values specified in table.6.

Table 6

mm

________________
* Size specifies the nominal position of the top plate. Maximum deviations in size are extreme deviations of the top plate from the nominal position.

4.5. The pair of cutting edges and corner radii should be smooth.

Allowed pairing quoted on hell.5.

Damn.5

4.6. The plates must be manufactured with chamfers width =0.2 mm and angle =20° at the perimeter on two sides (Fig.6).

Damn.6

At customer request it is possible to produce plates with dimensions listed in table.7.

Table 7

4.7. The roughness parameter of the plates according to GOST 2789−73 should not exceed microns

and rear bearing surfaces 0,32

chamfers on the cutting edges of 0.4.

(Changed edition, Rev. N 1, 3).

4.8. The plate surfaces should be free of cracks, chipping and sticking.

4.9. Chipping on the cutting edges of the plates vary depending on class size and location on the cutting edge.

4.9.1. The area of the fractures indicated on the devil.7.

(Changed edition, Rev. N 1).

4.9.2. (Deleted, Rev. N 1).

4.9.3. The amount of chipping on the cutting edges of the plates shall not exceed the values specified in table.8.

Table 8

4.9.4. In zones A and b plates class U tolerance should not be more than one spall on each side of the plate. In each zone plates With tolerances classes of U and G should not be more than one spall.

4.9.3, 4.9.4. (Changed edition, Rev. N 1).

4.10. The plate is allowed outside of the cylindrical bore without chamfer.

(Added, Rev. N 1).

4.11. The reliability of the plates (medium and installed periods of stability) and the failure criterion must conform to the normative-technical documentation for a cutting tool equipped with the appropriate multi-faceted ceramic insert.

(Added, Rev. N 3).

5. ACCEPTANCE

5.1. To check the compliance plates requirements of this standard the manufacturer shall carry out acceptance inspection.

5.2. Control for compliance with the requirements of section 4.2 — according to GOST 20559−75.

5.3. Defects in the plates are divided into critical, significant and insignificant.

Critical are the defects associated with the violation of requirements specified in the PP.4.8 and 4.9.

To include significant defects associated with violation of requirements specified in clause 4.4 dimensions and n.4.7.

To include minor defects associated with violation of requirements specified in the PP.4.4 (except size ), 4.5, and 4.6.

5.4. Control for compliance with the requirements of PP.4.8 and 4.9 — solid.

5.5. Control for compliance with the requirements of PP.4.4−4.7 — sampling according to GOST 18242−72*. Plate on control made by the parties.
________________
* On the territory of the Russian Federation GOST R 50779.71−99**.

** On the territory of the Russian Federation GOST R ISO 2859−1-2007. — Note the manufacturer’s database.

The party should consist of two plates one formulator, one mark of a hard alloy, performed in one technological process for a certain period of time and simultaneously presented for acceptance on the same document.

5.6. Control should be performed on a group of parameters related to significant or insignificant defects.

5.7. The method of selection of plates in the sample — random according to GOST 18321−73.

5.8. The control plan must comply with the specified in table.8A.

Table 8A*

________________
* Table.9. (Deleted, Rev. N 3).

________________
* If the sample volume is equal to or greater than the volume of the party, used total control.

5.9. Batch of plates is accepted if the number of defects in the sample group parameters does not exceed the acceptance number.

Batch of wafers must be rejected or subjected to continuous control if the number of defects in the sample group parameters more than the acceptance number.

Batch of wafers must be rejected or subjected to continuous control according to the parameter if the deviation exceeds the limit by more than 50% of tolerance on at least one plate.

5.10. Defective plates are identified in the party, the last inspection should be replaced.

Section 5. (Changed edition, Rev. N 3).

6. TEST METHODS

6.1. Methods to control linear and angular dimensions of the plates, defects and surface roughness — according to GOST 19086−80.

6.2. Dimensions of plates (PP.4.4−4.9), except for the size y of the triangular plates define all the faces, and vertices.

6.1, 6.2. (Changed edition, Rev. N 1).

6.3. The reliability of the ceramic plates is controlled on the instrument, equipped with data plates.

Inspection methods of reliability indices must conform to normative-technical documentation for the cutting tool.

(Added, Rev. N 3).

7. MARKING, PACKAGING, TRANSPORTATION AND STORAGE

7.1. On the side (rear) surface of each product should be marked with paint according to GOST 10503−71 the symbol of the brand cutting ceramics: a circle with a diameter not exceeding 3 mm red color for ceramic insert brand VOK-60, white ceramic insert In-3 and green for plates ceramic wok-71.

(Changed edition, Rev. N 3).

7.2. Plate one party packaging in quantities of no more than 10 pieces in consumer packaging (special plastic boxes with individual cells for each plate). Plate, the dimensions of which exceed 16x16 mm, allowed in the same amount to wrap in cellophane according to GOST 7730−89 or other transparent polymer film.

7.3. In consumer packaging put the label where you indicate:

a) the name of the manufacturer;

b) brand ceramics;

C) the batch number and date of issue;

g) marking plates (numeric or alphanumeric).

7.4. In a Multipack invest passport, which must be specified:

the number of plates and their weight;

the results of the tests;

information according to claim 7.3.

7.5. Packing group and transport packaging as well as transportation and storage — by GOST 18088−83.

Sec. 8. (Deleted, Rev. N 3).

APPLICATION (reference). APPROXIMATE WEIGHT PLATES

APP
Reference

APP. (Changed edition, Rev. N 3).