TU 14-131-1101-2012
JOINT-STOCK COMPANY
METALLURGICAL PLANT
ELEKTROSTAL
12.04.2018 No. 640-TU/13
NOTICE No. 2
on the extension of technical conditions TU 14-131-1101-2012
"Tubular blank made of heat-resistant alloy ХН77ТЮР-ВД
(EI437B-VD). Pilot batch"
Extend the validity period of TU 14-131-1101-2012 until 09.20.2020.
Technical Director I.V. Kabanov
I APPROVE Technical Director OJSC "Metallurgical Plant "Elektrostal" I.V. Kabanov «07» 12 2013 |
PIPE BLANK MADE OF HEAT-RESISTANT
ALLOY ХН77ТЮР-ВД (ЭИ437Б-ВД)
Pilot batch
TECHNICAL SPECIFICATIONS
TU 14-131-1101-2012
Change #1
Holder of the original - JSC "Metallurgical Plant "Elektrostal"
Effective date: from 16.12.2013
AGREED: Deputy Executive Director for technical re-equipment, chief engineer JSC NPO Energomash named after Academician V.P. Glushko" A.N. Vycherov First Deputy general director JSC "Composite" A.N. Timofeev General manager OOO Kommetprom S.B. Vilkin |
DEVELOPED BY: Head of Technical Department JSC Metallurgical Electrostal plant I.M. Vorobyova |
Change #1
TU 14-131-1101-2012
1. The introductory part shall be set out in a new version: "These technical conditions apply to tubular blanks made of heat-resistant alloy ХН77ТЮР-ВД (ЭИ437Б-ВД), smelted by the vacuum-arc remelting method. The blank is supplied in forged form and by pressing (extruding)."
REGISTERED: at JSC "Metallurgical Plant "Elektrostal" Head of the Standardization Bureau of the Technical Department O.B. Shvyryaeva |
I APPROVE Technical Director OJSC "Metallurgical Plant "Elektrostal" I.V. Kabanov «13» 02 2012 |
PIPE BLANK MADE OF HEAT-RESISTANT
ALLOY ХН77ТЮР-ВД (ЭИ437Б-ВД)
TECHNICAL SPECIFICATIONS
TU 14-131-1101-2012
Holder of the original: JSC "Metallurgical Plant "Elektrostal"
Validity period:
AGREED: Technical Director JSC "VTZ" I.L. Permyakov Deputy Executive Director for technical re-equipment, chief engineer JSC NPO Energomash named after Academician V.P. Glushko A.N. Vycherov First Deputy general director JSC "Composite" A.N. Timofeev General manager OOO Kommetprom S.B. Vilkin |
DEVELOPED BY: Head of Technical Department OJSC "Metallurgical Plant "Elektrostal" I.M. Vorobyova |
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TU 14-131-10 -2012
These technical conditions apply to tubular blanks made of heat-resistant alloy KhN77TYuR-VD (EI437B-VD), smelted by vacuum-arc remelting and manufactured by pressing ("extruding").
Example of a symbol:
Tubular blank, pressed, round, 150 mm in diameter, 550 mm in length, made of alloy ХН77ТЮР-ВД (ЭИ437Б-ВД)
Pipe blank - 150×550-ХН77ТЮР-ВД (ЭИ437Б-ВД) TU 14-131- -2012
The list of regulatory documents referenced in the text of the technical specifications is given in Appendix A.
1. OPTION
1.1. The tubular blank is made with a diameter of 150 mm.
1.2. The tubular blank is supplied in multiples of 500-550 mm in length.
1.3. Maximum deviations in size -1.0/+2.0 mm.
1.4. The ovality and curvature of the workpiece must comply with GOST 22411-77.
1.5. It is permitted to supply blanks of other diameters, lengths, with other maximum deviations according to the specification agreed between the supplier and the consumer.
2 TECHNICAL REQUIREMENTS
2.1. The chemical composition must comply with the standards specified in Table 1.
Table 1
| Alloy brand | Mass fraction of elements, % | |||||||||||||
| C | Si | Mn | S | P | Cr | Ni | Al | Ni | Fe | B | Cu | Ce | Pb | |
| ХН77ТЮР-ВД | ≤ 0.07 |
≤ 0.60 |
≤ 0.40 |
≤ 0,007 |
≤ 0,015 |
19.0-22.0 | Main | 0.6-1.0 | 2.4-2.8 | ≤ 1.0 |
≤ 0.01 |
≤ 0.07 |
≤ 0.02 |
≤ 0,001 |
| Note: | 1. Boron and cerium are introduced into the metal by calculation and are not determined by chemical analysis. 2. Mass fraction of residual elements in accordance with GOST 5632 |
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TU 14-131-10 -12
2.2. The tubular blank is supplied without heat treatment.
2.3. The forging size for a tubular blank must be at least 4.0.
2.4. The tubular blank is supplied in a turned condition, the surface roughness should not exceed Rz 80 µm.
2.5. No cracks, films, cavities, tears, nicks, hairlines, or slag inclusions visible without the use of magnifying devices are allowed on the surface of the tubular blank. The specified defects must be removed by gentle cutting or cleaning. The depth of cleaning must not exceed the sum of the maximum deviations for the diameter, calculated from the nominal diameter of the blank.
The width of the stripping must be no less than six times its depth. No more than three strippings of maximum depth are allowed in one section. Diametrically opposite strippings of maximum depth are not allowed. Individual dents and other defects of mechanical origin with a depth of no more than 1.0 mm are allowed without stripping.
2.6. The ends of the tubular blank must be cut evenly and free of burrs. The cut obliqueness must not exceed 5.0 mm.
2.7. The mechanical properties of the alloy at room temperature and at 700 °C, the long-term strength at 700 °C and the hardness of the alloy determined on longitudinal samples made from heat-treated blanks with a cross-section of 20-25 mm must satisfy the requirements of Table 2.
2.8. If the results of tests of mechanical properties and long-term strength are unsatisfactory, at least on one sample, repeat tests are carried out on a double number of samples taken from the same rods, of the type of test that gave unsatisfactory results, heat-treated according to the same regime.
If the results of repeated tests are unsatisfactory, tests are carried out on new control samples, heat-treated according to the regime specified in note 2 to table 2. In this case, all the property indicators provided for in table 2 are determined, and the results are considered primary.
The supplier plant is granted the right to present the batch again after 100% control of the bars for the indicator for which unsatisfactory results were obtained.
2.9. The macrostructure of the workpiece should not contain shrinkage cavities, shrinkage looseness, bubbles, cracks, slag inclusions, crust turns, flakes, or delaminations visible without the use of magnifying devices.
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TU 14-131-10 -2012
Table 2
| Heat treatment mode of samples | Test temperature T °C |
Mechanical properties | Long lasting strength | Brinell indentation diameter HB mm | |||||
Temporary resistance σ in N/ mm2 (kgf/ mm2 ) |
Yield strength σ 0.2 N/mm 2 (kgf/mm 2 ) | Relative elongation δ % |
Relative narrowing Ψ % |
Constantly applied stress σ N/ mm2 (kgf/ mm2 ) |
Test time t hour | ||||
| Quenching (1080±10) °C, holding for 8 hours, air cooling, aging (700±10) °C, holding for 16 hours, air cooling. | not less than | ||||||||
| room | 930 (95) |
610 (62) |
15 | 15 | - | - | 3.4-3.8 | ||
| 700 | 740 (75) |
15 | 20 | 451 (46) |
40 | - | |||
| Notes: | 1. Results of control of mechanical properties at room temperature, mechanical properties and long-term strength at 700 °C are optional on at least 3 heats. 2. During repeated testing, double aging or an increase in the aging time (during heat treatment of new control samples) by no more than two times is permitted. | ||||||||
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TU 14-131-1 -2012
Permissible macrostructure defects must not exceed:
central porosity - 1.0 points;
point heterogeneity - 1.0 points;
liquation square - 1.0 points;
intercrystalline cracks are not allowed.
Macrostructure in points is optional on at least 3 heats.
2.10. Contamination with non-metallic inclusions should not exceed:
line oxides no more than 2 points
point oxides no more than 2 points
silicates are brittle no more than 2 points
plastic silicates no more than 2 points
non-deformable silicates no more than 2 points
sulfides no more than 2 points
carbonitrides and nitrides no more than 5 points
titanium dots
carbonitrides and nitrides no more than 5 points
titanium stitching
The results of non-metallic inclusion control are optional for at least 3 melts.
2.11. The tubular blank is subjected to non-destructive ultrasonic testing (UT) for compliance with group 1 of GOST 21120-75 on 100% of tubular blanks. The diameter of the control flat-bottomed reflector used for UT should be 3.0 mm.
3. ACCEPTANCE RULES AND TEST METHODS
3.1. General acceptance rules - according to GOST 7566.
3.2. The tubular blank is presented for acceptance in batches consisting of blanks from the same heat and the same size.
Vacuum arc melting refers to ingots melted from one initial melt in one electrical mode.
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3.3. To check the quality of the alloy, the following are selected from the batch:
- to determine the chemical composition - one sample from the melt;
- to control the surface quality, roughness, dimensions - 100% of the workpieces.
3.4. The diameter and shape of the tubular blank are checked with a caliper in accordance with GOST 166 or with clamps in accordance with GOST 2216 in two mutually perpendicular directions in at least three places; the length of the blank is checked with a metal ruler in accordance with GOST 427 or another measuring instrument of the required accuracy.
3.5. The surface quality is checked without the use of magnifying devices.
3.6. Sampling for chemical analysis is carried out in accordance with GOST 7565.
Chemical analysis is carried out according to GOST 12344 - GOST 12348, GOST 12350, GOST 12352, GOST 12355, GOST 12356, GOST 12357, GOST 12360 and GOST 28473 or other methods that ensure the accuracy of determination established by the standards.
3.6. Macrostructure control is carried out on 2 samples in accordance with GOST 10243 in the supplied profile.
3.7. Tests of mechanical properties and long-term strength are carried out on two samples from the melt, cut from the supplied size.
3.7.1. Samples for testing mechanical properties are taken in accordance with GOST 7564. Tensile tests at room temperature are in accordance with GOST 1497, at elevated temperatures - in accordance with GOST 9651, hardness - in accordance with GOST 9012, and long-term strength - in accordance with GOST 10145.
3.8. Control of non-metallic inclusions in steel is carried out on six samples from the melt according to the method and scales of GOST 1778, method "Ш", option "Ш4" in the supplied profile.
3.9. An example of a symbol is not mandatory when drawing up a quality document.
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4. PACKAGING, MARKING, TRANSPORTATION AND STORAGE
4.1. Marking, packaging, transportation and storage in accordance with GOST 7566.
4.2. The tubular blank is additionally marked with the index "VD".
REGISTERED: at JSC Metallurgical Plant "Elektrostal" Head of the Standardization Bureau technical department O.B. Shvyryaeva |
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TU 14-131-10 -2012
Appendix A
(informative)
LIST OF ND,
which are referenced in the text of the technical specifications
| Designation ND | Numbers of items that contain a link |
| GOST 166-89 | p. 3.4 |
| GOST 427-75 | p. 3.4 |
| GOST 1497-84 | p. 3.7.1 |
| GOST 1778-70 | p. 3.8 |
| GOST 2216-84 | p. 3.4 |
| GOST 7564-73 | p. 3.7.1 |
| GOST 7565-81 | p. 3.6 |
| GOST 7566-94 | pp. 3.1; 4.1 |
| GOST 5632-72 | p. 2.1 |
| GOST 9012-59 | p. 3.7.1 |
| GOST 9651-84 | p. 3.7.1 |
| GOST 10145-81 | p. 3.7.1 |
| GOST 10243-75 | p. 3.6 |
| GOST 12344-2003 | p. 3.6 |
| GOST 12345-2001 | p. 3.6 |
| GOST 12346-78 | p. 3.6 |
| GOST 12347-77 | p. 3.6 |
| GOST 12348-78 | p. 3.6 |
| GOST 12350-78 | p. 3.6 |
| GOST 12352-81 | p. 3.6 |
| GOST 12355-78 | p. 3.6 |
| GOST 12356-81 | p. 3.6 |
| GOST 12357-84 | p. 3.6 |
| GOST 12360-82 | p. 3.6 |
| GOST 21120-75 | p. 2.11 |
| GOST 28473-90 | p. 3.6 |
