AS/NZS Australian/New Zealand Standard. ™. Structural steel welding. Part 1: Welding of steel structures. A. S. /N. ZS AS/NZS Australian/New Zealand Standard™. Structural steel welding. Part 1: Welding of steel structures. Originated in Australia as AS CA8— Join our Senior Welding Engineer Alan McClintock as he brings to attention what to do if using steels not manufactured to AS/NZS
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Structural steel welding Pa. Structural steel welding Part 1: Brightwater Engineers may print and retain one copy only. The following are represented on Committee WD To maintain their currency, all A are periodically reviewed, and new editions are published. Between editions, amendments may be issued.
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AS 1554.1 & AS/NZS 1554.1
We also welcome suggestions for improvement in our Standards, and especially encourage readers to notify us immediately of any apparent inaccuracies or ambiguities. Please address your comments to the Chief Executive of either Standards Australia or Standards New Zealand at the address shown on the back cover. Co py rig This Standard was issued in draft form for comment as DR This Standard was published on 17 June Copyright in this material is owned by Standards New Zealand.
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No part of this work may be reproduced or copied in any form or by any means, electronic or mechanical, including photocopying, without the written permission of the publisher, unless otherwise permitted under the Copyright Act Australia or the Copyright Act New Zealand. This edition incorporates the following major changes to the edition: Statements expressed in mandatory terms in notes to tables and figures are deemed to be requirements of this Standard. Co py rig The Standard, in catering for structures subject to fatigue conditions as well as statically loaded structures, provides two categories of welds with two differing levels of weld quality assurance associated with the different types of service to which the welds are subjected.
The intention is that the designer select the category suited to the severity of the service and nominate this on the drawings. Where a structure contains both categories, this nomination of appropriate categories will ensure that appropriate levels of supervision and inspection will be applied to the relevant parts of the structure. Prequalified joint preparations, welding consumables and welding procedures are also given in the Standard. Although this Standard has been specifically prepared for steel structures, it may be usefully applied to machine frames and other types of steel constructions.
Flux-cored arc welding FCAW. Electroslag including consumable guide welding ESW. The Standard is limited to the welding of steel parent material with a specified minimum yield strength not exceeding MPa.
Where welded joints in these structures are governed by dynamic loading conditions, the Standard applies only to those welded joints that comply with the fatigue provisions of ASAS or NZS In addition to the abovementioned structures, the Standard applies to the welding of cranes, hoists and other dynamically loaded structures, the welding of road and pedestrian bridges and the welding of steelwork in applications other than structural. This Standard does not apply to underwater welding. The Standard does not cover the design of welded connections or permissible stresses in welds, nor the production, rectification or repair of castings.
Documents referenced for informative purposes are listed in the Bibliography.
The authority having statutory powers to control the design and erection of buildings or structures. Where the structure is not subject to statutory jurisdiction, the principal is deemed to be the inspecting authority. Ze a The Standard does not apply to the welding of pressure vessels and pressure piping. Welds nominated as Category SP, but not complying with the requirements of that category, may be ss as Category GP welds, provided the requirements of the design Standard are satisfied and the principal has agreed.
The nominated representative should be suitably qualified to deal with the technical issues of this Standard. For certain conditions prescribed herein, the welding procedure is deemed to be prequalified and may not require full qualification testing see Clause 4. ASAS In particular, due consideration shall be given to the control of emitted fumes, especially when welding through paints, primers and other surface coatings.
The parent material to be welded shall— a b c be of a grade with a specified minimum yield strength not exceeding MPa; be selected in accordance with the provisions of Appendix B; and NOTE: Any steel type from any of the above Standards may be welded to any other steel type from any Standard listed 1554., provided the requirements of this Standard are met for each of the steels.
With the exception of quenched and tempered steels, parent materials not identified to a Standard nominated in Item c above may be used, provided one nas the following requirements are met: Permanently attached steel backing material shall have a weldability not less than that of the parent material. Temporary backing material of any type may be used for welds, provided the finished weld complies with the requirements of this Standard.
Electrodes that do not comply with the above Standards may be used, provided they are qualified in accordance with the requirements of Clause 4. Co Electrodes or filler wires for processes other than manual metal-arc welding shall comply with AS Nza wires shall be dry, smooth and free from corrosion or other matter deleterious either to satisfactory operation or to the weld metal.
Asnzs Compliance Requirements | Blog | Global Welding
Any coating on the electrodes or filler wires shall be continuous and firmly adherent. Any recommendations of the manufacturer, covering protection during storage and use, conditioning and pretreatment of electrodes or filler wires prior to use, shall be followed. Where the manufacturer makes specific recommendations covering conditioning and pretreatment of flux prior to use, such recommendations shall be followed.
Where flux is re-used, flux-recycling systems shall include suitable sieves and magnetic particle separators and shall be such that the flux remains in a satisfactory condition for re-use. Flux fused in the welding process shall not be re-used.
Nominal tensile strength of the weld metal. Whether welds are to be made in the shop or at the site. Details of non-standard welds.
Type ad extent of inspection, including any special inspection requirements. Any special requirements that could affect welding operations.
AS NZS Welding Structural Steel_图文_百度文库
The size of a complete penetration T-joint or corner joint butt weld shall be the thickness of the part that butts against the face of nxs other part. The size of an incomplete penetration butt weld shall be the minimum depth to which the weld extends from its face into the joint, exclusive of reinforcement. Where the joint contains two welds, the size shall be the combined depths.
The preferred sizes of fillet welds less jzs 15 mm are 2, 3, 4, 5, 6, 8, ad and 12 mm. For deep penetration fillet welds made by fully automatic arc welding processes, provided that it can be demonstrated by means of a macro test on a production weld that the required penetration has been achieved, an increase in design throat thickness shall be allowed as shown in Figure 3.
Where such penetration is nzw, the size of the weld may be correspondingly reduced. Larger fillet welds are not permitted unless a compound joint see Clause 3. St The transition slope between the parts shall be not steeper than 1: The nnzs shall be made by chamfering the thicker part or by sloping the weld surfaces, or by any combination of these as shown in Figure 3. Where the weld is full size throughout its length, no reduction in effective length shall be jzs for either the start or crater of the weld.
Any segment of intermittent fillet weld shall have an effective length of not less than 40 mm. Details of typical zns welds are shown in Figure 3. The size of seal welds shall comply with Clauses 3. The diameter of the hole for a plug weld shall be— a b not less than the sum of 8 mm plus the thickness of the part containing the hole; and not more than the greater of— i ii the sum of 11 mm plus the thickness of the part containing the hole; and 2.
The centre-to-centre spacing between plug welds shall be not less than four times the diameter of the hole. The effective area of a plug weld shall be the nominal cross-sectional area of the hole in the plane of the faying or contact surface. The width of the slot for slot welds shall be— b not more than the greater of— ii 2.
The minimum spacing of lines of slot welds in a direction transverse to their length shall 155.1 four times the width of the slot. The minimum a spacing in a longitudinal direction on any line shall be two times the length of the slot.
The effective area of a slot weld shall be as for a fillet weld of the same size and effective length.
Where a slot weld is made by completely or partially filling the slot i. Co bzs rig The ends of the slot shall be semicircular or shall have the corners rounded to a radius of not less than the thickness of the part containing it, except for those ends that extend to the edge of the part.
Where seal welding is required, such a procedure has to be specified clearly on the drawings or other documents see Clause 3. A welding procedure specification shall be developed from the PQR, based on the limits of the essential variables of Clause 4.
A change in welding direction between vertically up and vertical down shall require separate qualification. A 15541. qualification on a single-V butt weld that has been welded from only the one side shall qualify for welding a double-V butt weld and a single-V butt weld that has been welded on both sides. A procedure qualification on a single bevel butt weld that has been welded from only the one side shall qualify for welding a double bevel butt weld and a single bevel butt weld that has been welded on both sides.
A nas qualification on a single-U butt weld that has been welded from only the one side shall qualify for welding a double-U butt weld and a single-U butt weld that has been welded on both sides. A procedure qualification on a single-J butt weld that has been welded from only the one side shall qualify for welding a double-J butt weld and a single-J butt weld that has been welded on both sides.
A procedure qualification on a double-V butt weld shall also qualify for xs a single-V butt weld that has been welded on both sides. A procedure qualification on a double bevel butt weld shall also qualify for welding a single bevel butt weld that has been welded on both sides.
A procedure qualification on a double-U butt weld shall also qualify for welding a single-U butt weld that has been welded on both sides. A procedure qualification on a double-J butt weld shall also qualify for welding a single-J butt weld that has been welded on both sides. Thickness limitations for butt welds shall comply with the following: