Weld seam GOST 14771 46
5. When making the root of a multilayer weld by a welding method different from the main method by which the groove is filled, the values of the structural elements of the welded joint must be selected according to the main welding method. In this case, the designation of the welding method should be carried out with a shot, in the numerator of which the designation of the root welding method is given, and in the denominator - the designation of the main welding method.
6. For welded joints C12, C21, C23, C24, U7, U10, T7, having a thickness of parts s= 12 mm or more, as well as for connections C15, C16, C25, C27, U8, T8, having a thickness of parts s= 20 mm and more, performed by the UE welding method, blunting is allowed With= (5 ± 2) mm.
mm
7. Butt welding of parts of unequal thickness in case of a difference in thickness not exceeding the values \u200b\u200bspecified in Table. , should be produced in the same way as parts of the same thickness; the structural elements of the prepared edges and the dimensions of the weld should be selected according to the greater thickness.
To make a smooth transition from one part to another, an inclined arrangement of the seam surface is allowed (Fig.).
With a difference in the thickness of the parts to be welded above the values \u200b\u200bspecified in Table. , on a part with a large thickness s 1 beveled on one or both sides to the thickness of the thin piece s as indicated in hell. And . In this case, the structural elements of the prepared edges and the dimensions of the weld should be selected according to the smaller thickness.
8. Size and limit deviations of the leg of the fillet weld TO And K 1 must be set during design. In this case, the leg size should be no more than 3 mm for parts up to 3 mm thick inclusive and 1.2 thicknesses of a thinner part when welding parts with a thickness of more than 3 mm. Limit deviations of the size of the leg of the fillet welds from the nominal value are given in the appendix.
9. (Deleted, Rev. No. 1).
10. (Deleted, Rev. No. 3).
11. Convexity or concavity of the fillet weld is allowed up to 30% of its leg, but not more than 3 mm. In this case, the concavity should not lead to a decrease in the value of the leg TO n (damn.), established during the design.
Note . leg TO n is the leg of the largest right triangle inscribed in the outer part of the fillet weld. With a symmetrical seam for the leg TO n any of the equal legs is accepted, with an asymmetrical seam - the smaller one.
(Revised edition, Rev. No. 3).
12. Before welding, the displacement of the edges relative to each other is allowed no more than:
0,2s mm - for parts up to 4 mm thick;
0,1s+ 0.5 mm - for parts with a thickness of 5 - 25 mm;
3 mm - for parts with a thickness of 25 - 50 mm;
0,04s+ 1.0 mm - for parts with a thickness of 50 - 100 mm;
0,01s+ 4.0 mm, but not more than 6 mm - for parts with a thickness of more than 100 mm.
14. The minimum values of the legs of the fillet welds are given in the appendix.
15. When using welding in carbon dioxide instead of manual arc welding, the leg of the design fillet weld can be reduced to the values \u200b\u200bgiven in the appendix.
16. When welding in carbon dioxide with an electrode wire that provides a weld metal with a higher tensile strength than that of the base metal, the leg of the design fillet weld can be reduced to the values \u200b\u200bgiven in the appendix.
14 - 16. (Introduced additionally, Amendment No. 1).
17. In butt, tee and corner joints with a thickness of more than 16 mm, performed under installation conditions, it is allowed to increase the nominal value of the size b up to 4 mm. In this case, the width of the seam can be increased accordingly. e, e 1 .
18. Allowed in places of overlap welds and in places where defects are corrected, an increase in the size of the welds up to 30% of the nominal value.
19. When preparing edges using hand tool limit deviations of the bevel angle can be increased up to ± 5°. In this case, the width of the seam can be changed accordingly. e, e 1 .
17 - 19. (Introduced additionally, Amendment No. 3).
Yield strength of welded steel, MPa |
Minimum leg fillet weld for the thickness of the thicker piece to be welded |
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3 to 4 |
St. 4 to 5 |
St. 5 to 10 |
St. 10 to 16 |
St. 16 to 22 |
St. 22 to 32 |
St. 32 to 40 |
St. 40 to 80 |
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Up to 400 |
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St. 400 to 450 |
Note . The minimum leg value must not exceed 1.2 times the thickness of the thinner element.
Fillet weld leg for welding methods |
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Manual arc |
In carbon dioxide, using a wire of Sv-08G2S brand with a diameter of 1.4 to 2.0 mm instead of electrodes of the type |
In carbon dioxide, using a wire of Sv-08G2S brand with a diameter of 0.8 to 1.2 mm instead of electrodes of the type |
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E42A and E42 |
E46A and E46 |
E50A and E50 |
E42A and E42 |
E46A and E46 |
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Note . The given data does not apply to connections made when welding on an extended electrode stick-out or on a direct current polarity.
Fillet weld leg for the ratio of the tensile strength of the weld metal to the tensile strength of the base metal |
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5. When making the root of a multilayer weld by a welding method different from the main method by which the groove is filled, the values of the structural elements of the welded joint must be selected according to the main welding method. In this case, the designation of the welding method should be made in shot, in the numerator of which the designation of the method of welding the root of the seam is given, and in the denominator - the designation of the main welding method. 6. For welded joints C12, C21, C23, C24, U7, U10, T7, having a thickness of parts s= 12 mm or more, as well as for connections C15, C16, C25, C27, U8, T8, having a thickness of parts s= 20 mm and more, performed by the UE welding method, blunting is allowed With= 5 ± 2 mm. Table 48 7. Butt welding of parts of unequal thickness in case of a difference in thickness not exceeding the values \u200b\u200bspecified in Table. 48, should be produced in the same way as parts of the same thickness; the structural elements of the prepared edges and the dimensions of the weld should be selected according to the greater thickness. To make a smooth transition from one part to another, an inclined arrangement of the weld surface is allowed (Fig. 1). With a difference in the thickness of the parts to be welded above the values \u200b\u200bspecified in Table. 48, on a part having a large thickness s 1 beveled on one or both sides to the thickness of the thin piece s as indicated in hell. 2 and 3. In this case, the structural elements of the prepared edges and the dimensions of the weld should be chosen according to the smallest thickness. 8. Size and limit deviations of the leg of the fillet weld TO And K 1 must be set during design. In this case, the leg size should be no more than 3 mm for parts up to 3 mm thick inclusive and 1.2 thicknesses of a thinner part when welding parts with a thickness of more than 3 mm. Maximum deviations of the size of the fillet weld leg from the nominal value are given in Appendix 4. 9. (Deleted, Rev. No. 1). 10. (Deleted, Rev. No. 3). 11. Convexity or concavity of the fillet weld is allowed up to 30% of its leg, but not more than 3 mm. In this case, the concavity should not lead to a decrease in the value of the leg K p(Fig. 4) installed during the design. Note. leg TOn is the leg of the largest right triangle inscribed in the outer part of the fillet weld. With a symmetrical seam for the leg TOn any of the equal legs is accepted, with an asymmetrical seam - a smaller one. (Revised edition, Rev. No. 3). 12. Before welding, the displacement of the edges relative to each other is allowed no more than: 0,2s mm - for parts up to 4 mm thick; 0,1s+ 0.5 mm - for parts with a thickness of 5 - 25 mm; 3 mm - for parts with a thickness of 25 - 50 mm; 0,04s+ 1.0 mm - for parts with a thickness of 50 - 100 mm; 0,01s+ 4.0 mm, but not more than 6 mm - for parts with a thickness of more than 100 mm. 13. When welding in carbon dioxide with an electrode wire with a diameter of 0.8 - 1.4 mm, it is allowed to use the main types of welded joints and their structural elements in accordance with GOST 5264-80. 14. The minimum values of the legs of the fillet welds are given in Appendix 1. 15. When welding in carbon dioxide is used instead of manual arc welding, the leg of the design fillet weld can be reduced to the values given in Appendix 2. 16. When welding in carbon dioxide with an electrode wire that provides a weld metal with a higher tensile strength than that of the base metal, the leg of the calculated fillet weld can be reduced to the values \u200b\u200bgiven in the recommended Appendix 3. 14 - 16. 17. In butt, tee and corner joints with a thickness of more than 16 mm, performed under installation conditions, it is allowed to increase the nominal value of the size b up to 4 mm. In this case, the width of the seam can be increased accordingly. e, e 1 . 18. It is allowed in places where welds overlap and in places where defects are corrected, an increase in the size of the welds up to 30% of the nominal value. 19. When preparing edges using a hand tool, the maximum deviations of the bevel angle of the edges can be increased up to ± 5 °. In this case, the width of the seam can be changed accordingly. e, e 1 . 17 - 19. (Introduced additionally, Amendment No. 3).
Note. The minimum leg value must not exceed 1.2 times the thickness of the thinner element.
Note. The given data does not apply to connections made when welding on an extended electrode stick-out or on a direct current polarity.
APPENDICES 1-3.(Introduced additionally, Amendment No. 1). APPENDIX 4(Introduced additionally, Amendment No. 3). GOST 14771-76 INTERSTATE STANDARD SHIELDED ARC WELDING WELDED CONNECTIONS MAIN TYPES, CONSTRUCTION ELEMENTS AND DIMENSIONS Official edition Standartinform INTERSTATE STANDARD Arc welding in shielding gas JOINTS WELDED Main types, structural elements and dimensions Gas-shielded arc welding. Main types, design elements and dimensions MKC 25.160.40 GOST 14771-69 By the Decree of the State Committee of Standards of the Council of Ministers of the USSR dated July 28, 1976 No. 1826, the introduction date was set The validity period was removed by the Decree of the State Standard of 18.06.92 No. 553 1. This standard establishes the main types, structural elements and dimensions of welded joints made of steels, as well as alloys on iron-nickel and nickel bases, performed by gas-shielded arc welding. The standard does not establish the main types, structural elements and dimensions of welded joints of steel pipelines in accordance with GOST 16037-80. 2. The following designations for welding methods are accepted in the standard: IN - in inert gases, non-consumable electrode without filler metal; INp - in inert gases with a non-consumable electrode with filler metal; IP - in inert gases and their mixtures with carbon dioxide and oxygen by a consumable electrode; UP - in carbon dioxide and its mixture with oxygen by a consumable electrode. 3. The main types of welded joints must correspond to those indicated in Table. 1. Official publication Reprint prohibited Edition (December 2006) with Amendments No. 1, 2, 3, approved in March 1982, December 1986, January 1989 (IUS 6-82, 3-87, 4-89). © Standards Publishing House, 1976 © Standartinform, 2007 ready] Character Cross section shape
With folded two edges ![]() Unilateral ![]() With one edging T///W\m//Х1$л\ч Unilateral Without bevel Unilateral Unilateral Bilateral GOST 14771-Tb ![]() Character Cross section shape ![]() Thickness of parts to be welded, mm, for welding methods Conditional designation welded connections Unilateral Unilateral Beveled on one edge ![]() Unilateral Unilateral castle ![]() ![]() ![]() With a curved bevel of one edge With a broken bevel on one edge Bilateral metric bevels of one edge ![]() ![]() ![]() ![]() ![]() ![]() ![]() GOST 14771-Tb C. ![]() 4 GOST 14771-Tb Character Cross section shape Thickness of parts to be welded, mm, for welding methods Conditional designation welded connections With a broken bevel of two edges ![]() With two symmetrical bevels of two lumps With two symmetrical curves Bilateral the two edges themselves With two symmetrical lo- two edges ![]() ![]() ![]() ![]() ![]() ![]() ![]() With one edging Unilateral Without beveled edges ![]()
Cross section shape Thickness of parts to be welded, mm, yes welding methods Conditional designation ![]() 0,8-12,0![]() GOST 14771-Tb Character Cross section shape Thickness of parts to be welded, mm, for welding methods Conditional designation welded Without bevel Bilateral Unilateral 1Beveled on one edge »Bilateral 1metric bevels on one edge Bilateral Unilateral Without bevel ![]() Bilateral ![]() ![]() ![]() ![]() 0,8-10,0![]() tzGOST 14771-Tb C. 4. Structural elements of welded joints, their dimensions and limit deviations for them must correspond to those indicated in table. 2-47. In addition to these welding methods, it is allowed to use other methods of gas-shielded arc welding. ![]() Dimensions, mm Table 3 ![]() Dimensions, mm Table 4 Structural elements weld seam e, no more +0,2in1,0-1,4^Size for reference + 1,0Table 5 Dimensions, mm
Table 6 ![]() ![]() ![]() -Yo o I I I"
ppDimensions, mm ![]() P. 10 GOST 14771-76 ![]() Table 10 ![]() AWelding method 1UGOST 14771-76 S. 11 ![]() 12 GOST 14771-76 ![]() Dimensions, mm ![]() £e I 3 Zon yo o e as re ![]() S 03 5 £ o mc X f S o Welding method Previous off Previous off Previous off Previous off y, hail. (offset limit +2°) GOST 14771-76 S. 13 ![]() 14 GOST 14771-Tb Table 15 ![]() Dimensions, mm Table 16 ![]() ![]() ![]() ![]() GOST 14771-Tb S. 17 ![]() 18 GOST 14771-Tb ![]() GOST 14771--76 S. 19 ![]() 20 GOST 14771-76 ![]() GOST 14771-Tb S. 21 ![]() Table 25 Dimensions, mm ![]() Table 26 ![]() Dimensions, mm Table 27 ![]() Table 28 ![]() Dimensions, mm Table 29 ![]() Table 30 ![]() ^Size for reference Dimensions, mm Table 31 ![]() Dimensions, mm Table 32 ![]() Table 33 ![]() Dimensions, mm Table 34 ![]() Dimensions, mm Table 35 ![]() ![]() GOST 14771-Tb S. 27 Dimensions, mm ![]() 28 GOST 14771-76 Table 38 ![]() Dimensions, mm Table 39 ![]() Table 40 ![]() Dimensions, mm Table 41 Conditional designation welded connections Structural elements prepared edges of welded parts weld seam Previous off tz1![]() INp, IP, UP ![]() 6,0-20,0+ 1,0+2,0![]() Dimensions, mm Table 43 ![]() ![]() and IWelding method Previous off Previous off Dimensions, mm ![]() P. 32 GOST 14771-76 Table 46 Conditional designation welded connections Structural elements prepared edges of welded parts weld seam + 1,0+ 1,0+2,0Table 48 (Changed edition, Rev. No. 1, 2, 3). 5. When making the root of a multilayer weld by a welding method different from the main method by which the groove is filled, the values of the structural elements of the welded joint must be selected according to the main welding method. In this case, the designation of the welding method should be carried out with a shot, in the numerator of which the designation of the root welding method is given, and in the denominator - the designation of the main welding method. 6. For welded joints C12, C21, C23, C24, U7, U10, T7, having a thickness of parts s = 12 mm or more, as well as for joints S15, S16, S25, S27, U8, T8, having a thickness of parts s = 20 mm or more, performed by the UP welding method, blunting is allowed with = (5+ 2) mm. 7. Butt welding of parts of unequal thickness in case of a difference in thickness not exceeding the values \u200b\u200bspecified in Table. 48, must be carried out in the same way as the parts the same thickness; the structural elements of the prepared edges and the dimensions of the weld should be selected according to the greater thickness. To make a smooth transition from one part to another, an inclined arrangement of the weld surface is allowed (Fig. 1). With a difference in the thickness of the parts to be welded above the values \u200b\u200bspecified in Table. 48, on a part having a large thickness Sj, a bevel should be made on one or both sides to the thickness of a thin part s, as indicated in Fig. 2 and 3. In this case, the structural elements of the prepared edges and the dimensions of the weld should be chosen according to the smallest thickness. 8. The size and limit deviations of the leg of the fillet weld K and K\ must be established during design. In this case, the leg size should be no more than 3 mm for parts up to 3 mm thick inclusive and 1.2 thicknesses of a thinner part when welding parts with a thickness of more than 3 mm. Maximum deviations of the size of the fillet weld leg from the nominal value are given in Appendix 4. 9. (Deleted, Rev. No. 1). 10. (Deleted, Rev. No. 3). 11. Convexity or concavity of the fillet weld is allowed up to 30% of its leg, but not more than 3 mm. In this case, the concavity should not lead to a decrease in the value of the leg K p (Fig. 4), established during the design. Note. The leg K p is the leg of the largest right triangle inscribed in the outer part of the fillet weld. With a symmetrical seam, any of the equal legs is taken for the leg K p, with an asymmetrical seam, the smaller one. (Revised edition, Rev. No. 3). 12. Before welding, the displacement of the edges relative to each other is allowed no more than: 0.2 s mm - for parts up to 4 mm thick; 0.1 s + 0.5 mm - for parts with a thickness of 5-25 mm; 3 mm - for parts with a thickness of 25-50 mm; 0.04 s + 1.0 mm - for parts with a thickness of 50-100 mm; 0.01 s + 4.0 mm, but not more than 6 mm - for parts with a thickness of more than 100 mm. 13. When welding in carbon dioxide with an electrode wire with a diameter of 0.8-1.4 mm, it is allowed to use the main types of welded joints and their structural elements in accordance with GOST 5264-80. 14. The minimum values of the legs of the fillet welds are given in Appendix 1. 15. When welding in carbon dioxide is used instead of manual arc welding, the leg of the design fillet weld can be reduced to the values given in Appendix 2. 16. When welding in carbon dioxide with an electrode wire that provides a weld metal with a higher tensile strength than that of the base metal, the leg of the calculated fillet weld can be reduced to the values \u200b\u200bgiven in Appendix 3. 14-16. (Introduced additionally, Amendment No. 1). ![]() ![]() 17. In butt, tee and corner joints with a thickness of more than 16 mm, performed under installation conditions, it is allowed to increase the nominal value of dimension b to 4 mm. In this case, the width of the seam e, e± can be increased accordingly. 18. It is allowed in places where welds overlap and in places where defects are corrected, an increase in the size of the welds up to 30% of the nominal value. 19. When preparing edges using a hand tool, the maximum deviations of the bevel angle of the edges can be increased up to +5 °. In this case, the width of the seam e, b\ can be changed accordingly. 17-19. (Introduced additionally, Amendment No. 3). Note. The minimum leg value must not exceed 1.2 times the thickness of the thinner element. Fillet weld leg for welding methods
Note. The given data does not apply to connections made when welding on an extended electrode stick-out or on a direct current polarity. Fillet weld leg for the ratio of the tensile strength of the weld metal to the tensile strength rupture of base metal APPENDICES 1-3. (Introduced additionally, Amendment No. 1). APPENDIX 4. (Introduced additionally, Amendment No. 3). Editor V.N. Kopysov Technical editor L.A. Guseva Proofreader M.V. Buchnaya Computer Layout L.A. Circular Signed for publication on 15.01.2007. Format 60 x 84 Y 8 . Offset paper. Headset Times. Offset printing. Uel. oven l. 4.65. Uch.-ed. l. 4.20. Circulation 128 copies. Zach. 33. From 3576. FSUE "Standartinform", 123995 Moscow, Granatny per., 4. Typed in FSUE "Standartinform" on a PC. Printed in the branch of FSUE "Standartinform" - type. "Moscow printer", 105062 Moscow, Lyalin per., 6 5. When making the root of a multilayer weld by a welding method different from the main method by which the groove is filled, the values of the structural elements of the welded joint must be selected according to the main welding method. In this case, the designation of the welding method should be made in shot, in the numerator of which the designation of the method of welding the root of the seam is given, and in the denominator - the designation of the main welding method. 6. For welded joints C12, C21, C23, C24, U7, U10, T7, having a thickness of parts s= 12 mm or more, as well as for connections C15, C16, C25, C27, U8, T8, having a thickness of parts s= 20 mm and more, performed by the UE welding method, blunting is allowed With= 5 ± 2 mm. Crap. 2. Crap. 3. 8. Size and limit deviations of the leg of the fillet weld TO And K 1 must be set during design. In this case, the leg size should be no more than 3 mm for parts up to 3 mm thick inclusive and 1.2 thicknesses of a thinner part when welding parts with a thickness of more than 3 mm. Limit deviations of the size of the leg of the fillet welds from the nominal value are given in. 9. (Deleted, Rev. No. 1). 10. (Deleted, Rev. No. 3). 11. Convexity or concavity of the fillet weld is allowed up to 30% of its leg, but not more than 3 mm. In this case, the concavity should not lead to a decrease in the value of the leg K p(Fig. 4) installed during the design. Crap. 4 . Note. leg TO nis the leg of the largest right triangle inscribed in the outer part of the fillet weld. With a symmetrical seam for the leg TO nany of the equal legs is accepted, with an asymmetrical seam - a smaller one. (Revised edition, Rev. No. 3). 12. Before welding, the displacement of the edges relative to each other is allowed no more than: 0,2s mm - for parts up to 4 mm thick; 0,1s+ 0.5 mm - for parts with a thickness of 5 - 25 mm; 3 mm - for parts with a thickness of 25 - 50 mm; 0,04s+ 1.0 mm - for parts with a thickness of 50 - 100 mm; 0,01s+ 4.0 mm, but not more than 6 mm - for parts with a thickness of more than 100 mm. 14. The minimum values of the legs of the fillet welds are given in. 15. When using welding in carbon dioxide instead of manual arc welding, the leg of the calculated fillet weld can be reduced to the values \u200b\u200bgiven in. 16. When welding in carbon dioxide with an electrode wire that provides a weld metal with a higher tensile strength than that of the base metal, the leg of the calculated fillet weld can be reduced to the values \u200b\u200bgiven in the recommended one. 14 - 16. (Introduced additionally, Amendment No. 1). 17. In butt, tee and corner joints with a thickness of more than 16 mm, performed under installation conditions, it is allowed to increase the nominal value of the size b up to 4 mm. In this case, the width of the seam can be increased accordingly. e, e 1 . 18. It is allowed in places where welds overlap and in places where defects are corrected, an increase in the size of the welds up to 30% of the nominal value. 19. When preparing edges using a hand tool, the maximum deviations of the bevel angle of the edges can be increased up to ± 5 °. In this case, the width of the seam can be changed accordingly. e, e 1 . 17 - 19. (Introduced additionally, Amendment No. 3). mm
Note . The minimum leg value must not exceed 1.2 times the thickness of the thinner element. mm
Note . The given data does not apply to connections made when welding on an extended electrode stick-out or on a direct current polarity. (Introduced additionally, Amendment No. 1). mm
(Introduced additionally, Amendment No. 3). INFORMATION DATA1. DEVELOPED AND INTRODUCED by the research and production association TsNIITMASH. PERFORMERS M. M. Borisenko(topic leader); V. D. Khodakov; E. G. Starchenko. 2. APPROVED AND INTRODUCED BY Decree of the State Committee for Standards of the Council of Ministers of the USSR dated July 28, 1976 No. 1826. 3. Term of inspection 1990. Periodicity of inspection is 5 years. 4. Standard conformTGL 14905/03 regarding the form and content of tables of welded joints. 5. REPLACE GOST 14771-69. 6. REFERENCE NORMATIVE AND TECHNICAL DOCUMENTS. 7. REPUBLICATION with Amendments No. 1, 2, 3, approved in March 1982, December 1986, January 1989 (IUS 6-82, 3-87, 4-89). 5. When making the root of a multilayer weld by a welding method different from the main method by which the groove is filled, the values of the structural elements of the welded joint must be selected according to the main welding method. In this case, the designation of the welding method should be made in shot, in the numerator of which the designation of the method of welding the root of the seam is given, and in the denominator - the designation of the main welding method. 6. For welded joints C12, C21, C23, C24, U7, U10, T7, having a thickness of parts s= 12 mm or more, as well as for connections C15, C16, C25, C27, U8, T8, having a thickness of parts s= 20 mm and more, performed by the UE welding method, blunting is allowed With= 5 ± 2 mm. Crap. 2. Crap. 3. 8. Size and limit deviations of the leg of the fillet weld TO And K 1 must be set during design. In this case, the leg size should be no more than 3 mm for parts up to 3 mm thick inclusive and 1.2 thicknesses of a thinner part when welding parts with a thickness of more than 3 mm. Limit deviations of the size of the leg of the fillet welds from the nominal value are given in. 9. (Deleted, Rev. No. 1). 10. (Deleted, Rev. No. 3). 11. Convexity or concavity of the fillet weld is allowed up to 30% of its leg, but not more than 3 mm. In this case, the concavity should not lead to a decrease in the value of the leg K p(Fig. 4) installed during the design. Crap. 4 . Note. leg TO nis the leg of the largest right triangle inscribed in the outer part of the fillet weld. With a symmetrical seam for the leg TO nany of the equal legs is accepted, with an asymmetrical seam - a smaller one. (Revised edition, Rev. No. 3). 12. Before welding, the displacement of the edges relative to each other is allowed no more than: 0,2s mm - for parts up to 4 mm thick; 0,1s+ 0.5 mm - for parts with a thickness of 5 - 25 mm; 3 mm - for parts with a thickness of 25 - 50 mm; 0,04s+ 1.0 mm - for parts with a thickness of 50 - 100 mm; 0,01s+ 4.0 mm, but not more than 6 mm - for parts with a thickness of more than 100 mm. 14. The minimum values of the legs of the fillet welds are given in. 15. When using welding in carbon dioxide instead of manual arc welding, the leg of the calculated fillet weld can be reduced to the values \u200b\u200bgiven in. 16. When welding in carbon dioxide with an electrode wire that provides a weld metal with a higher tensile strength than that of the base metal, the leg of the calculated fillet weld can be reduced to the values \u200b\u200bgiven in the recommended one. 14 - 16. (Introduced additionally, Amendment No. 1). 17. In butt, tee and corner joints with a thickness of more than 16 mm, performed under installation conditions, it is allowed to increase the nominal value of the size b up to 4 mm. In this case, the width of the seam can be increased accordingly. e, e 1 . 18. It is allowed in places where welds overlap and in places where defects are corrected, an increase in the size of the welds up to 30% of the nominal value. 19. When preparing edges using a hand tool, the maximum deviations of the bevel angle of the edges can be increased up to ± 5 °. In this case, the width of the seam can be changed accordingly. e, e 1 . 17 - 19. (Introduced additionally, Amendment No. 3). mm
Note . The minimum leg value must not exceed 1.2 times the thickness of the thinner element. mm
Note . The given data does not apply to connections made when welding on an extended electrode stick-out or on a direct current polarity. (Introduced additionally, Amendment No. 1). mm
(Introduced additionally, Amendment No. 3). INFORMATION DATA1. DEVELOPED AND INTRODUCED by the research and production association TsNIITMASH. PERFORMERS M. M. Borisenko(topic leader); V. D. Khodakov; E. G. Starchenko. 2. APPROVED AND INTRODUCED BY Decree of the State Committee for Standards of the Council of Ministers of the USSR dated July 28, 1976 No. 1826. 3. Term of inspection 1990. Periodicity of inspection is 5 years. 4. Standard conformTGL 14905/03 regarding the form and content of tables of welded joints. 5. REPLACE GOST 14771-69. 6. REFERENCE NORMATIVE AND TECHNICAL DOCUMENTS. 7. REPUBLICATION with Amendments No. 1, 2, 3, approved in March 1982, December 1986, January 1989 (IUS 6-82, 3-87, 4-89). |