TU 48-21-92-89
OKP 184610 AGREED General manager Berilli UM LLC O.V.Tolmachev "26" October 2004 |
UDC 669.35-412 Group B 53 I APPROVE Chief Engineer OJSC "MZOCM" V.L.Ziselman "27" October 2004 |
BRONZE SLABS AND CYLINDRICAL BLANKS
BrNBT BRANDS
TECHNICAL SPECIFICATIONS
TU 48-21-92-89
Change #2
1. Title page: The title of the technical conditions shall be set out in a new version:
"Bronze plates and cylindrical blanks of the BrNBT brand (C 17510)
2. Clause 1.3. Table 3 shall be set out in a new version:
Table 3
| Main components, % | Impurities, % not more than | |||||||
| Beryllium | Nickel | Titanium | Copper | Lead | Tin | Zinc | Aluminum | Total |
| 0.2-0.6 | 1.4-2.2 | up to 0.15 | Ost. | 0.005 | 0,1 | 0.2 | 0.15 | 0.7 |
DEVELOPED BY: Head of Technical Department A.A. Tugarev «26» 10 2004 |
| Inv. No. | Sub. and date | Mutual inv. No. | Outgoing No. duplicate. | Signature and date |
BRONZE SLABS AND CYLINDRICAL BLANKS
BrBNT BRANDS
Technical conditions
TU 48-21-92-89
These technical conditions apply to cast and hot-rolled plates and cast cylindrical blanks made of BrNBT grade bronze, intended for the manufacture of contact welding machines.
Examples of symbols:
Cast plate (L), rectangular section (PR), 70 mm thick, 265 mm wide, 1400 mm long, made of BrNBT bronze:
Plate LPR 70x265x1400 BrNBT TU 48-21-92-89 .
Hot-rolled plate (G), rectangular section (PR), 24 mm thick, 415 mm wide, 405 mm long made of BrNBT bronze:
GPR slab 24x415x405 BrNBT TU 48-21-92-89 .
Cast blank (L), cylindrical (C), 100 mm in diameter, 1500 mm in length, made of BrNBT grade bronze:
LC blank Ø100x1500 BrNBT TU 48-21-92-89 .
1.Technical requirements
1.1. Assortment
1.1.1. The dimensions of the slabs and their maximum deviations must comply with the requirements specified in Table 1.
Table 1
mm
| Thickness | Maximum thickness deviations | Width | Maximum deviations in width | Length | Maximum deviations in length for finished size |
10 10 10 14 14 16 16 20 20 20 20 20 20 24 24 24 24 29 29 29 33 |
+2 | 340 390 340 330 270 420 335 330 340 420 265 335 415 420 265 335 415 265 335 415 200 |
±10 | multiple of 80 330 multiple of 105 multiple of 130 205 325 multiple of 105 165 205 255 325 405 205 255 325 405 255 325 405 multiple of 50 |
+10 |
| Thickness | Maximum thickness deviations | Width | Maximum deviations in width | Length | Maximum deviations in length for finished size |
35 40 40 43 46 48 |
+2 | 335 355 385 500 345 525 |
±10 | 325 335 355 180 185 180 |
+10 |
| -5 | |||||
50 55 67 68 70 70 77 77 80 120 190 |
+5 +5 +5 ±2 ±2 ±2 +5 +5 ±2 ±5 ±5 |
100 155 142 148 265 265 93 93 98 120 110 |
±5 | not less than 150 1200-2200 440 440 440 1600 690 1600 1600 1600 1600 |
+20 +20 ±10 ±10 +20 ±50 +20 ±50 ±50 |
Note:
- Slabs with a thickness of 55 mm and more are made cast.
- By agreement between the manufacturer and the consumer, it is permitted to manufacture slabs and cylindrical blanks with other dimensions and maximum deviations specified in the work order.
1.1.2 The dimensions of cast cylindrical blanks and their maximum deviations must comply with the requirements specified in Table 2.
Table 2
mm
| Diameter | Maximum deviations in diameter | Length |
| 100 | ±5 | 50-2200 |
| 120 | 250-900 | |
| 125 | ||
| 145 | ||
| 200 | 50-1500 |
1.2. Plates and cylindrical blanks are manufactured in accordance with the requirements of these technical conditions according to the technological regulations approved in the established manner.
1.3. The chemical composition of slabs and cylindrical blanks made of BrNBT bronze must correspond to that specified in Table 3.
Table 3
%
| Main components | Impurities, no more than | ||||||||
| Beryllium | Nickel | Titanium | Copper | Lead | Tin | Zinc | Aluminum | Total | |
| 0.2-0.4 | 1.4-1.8 | 0.05-0.15 | Rest | 0.005 | 0,1 | 0.2 | 0.15 | 0.7 | |
1.4. Minor defects in the form of scratches, dents, pores, films and cracks, as well as deviations from the plane within the circumference corresponding to the roller diameter, which can be removed by turning to the nominal size of the electric rollers, are allowed on the surface of the plates and cylindrical blanks. The surface quality of the plates and cylindrical blanks is allowed
check against standard samples agreed upon between the manufacturer and the consumer in the established manner.
1.5. Cast plates and cylindrical blanks are supplied without thermomechanical treatment.
1.6. Hot rolled plates are supplied heat treated and straightened.
1.7. The hardness of hot-rolled plates must be at least 170 HB.
