1、BSI Standards Publication PD CEN/TS 16892:2015 Plastics Welding of thermoplastics Specification of welding proceduresPD CEN/TS 16892:2015 PUBLISHED DOCUMENT National foreword This Published Document is the UK implementation of CEN/TS 16892:2015. The UK participation in its preparation was entrusted
2、to Technical Committee PRI/80, Welding thermoplastics. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The Br
3、itish Standards Institution 2015. Published by BSI Standards Limited 2015 ISBN 978 0 580 89466 4 ICS 25.160.10 Compliance with a British Standard cannot confer immunity from legal obligations. This Published Document was published under the authority of the Standards Policy and Strategy Committee on
4、 31 December 2015. Amendments issued since publication Date Text affectedPD CEN/TS 16892:2015TECHNICAL SPECIFICATION SPCIFICATION TECHNIQUE TECHNISCHE SPEZIFIKATION CEN/TS 16892 December 2015 ICS 25.160.10 English Version Plastics - Welding of thermoplastics - Specification of welding procedures Pla
5、stiques - Soudage des matriaux termoplastiques - Spcification de modes opratoires de soudage Kunststoffe - Schweien von thermoplastischen Kunststoffen - Anforderung von Schweiverfahren This Technical Specification (CEN/TS) was approved by CEN on 13 November 2015 for provisional application. The peri
6、od of validity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to submit their comments, particularly on the question whether the CEN/TS can be converted into a European Standard. CEN members are required to announce the existence of this CEN/
7、TS in the same way as for an EN and to make the CEN/TS available promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in parallel to the CEN/TS) until the final decision about the possible conversion of the CEN/TS into an EN is reached
8、. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Pola
9、nd, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation
10、in any form and by any means reserved worldwide for CEN national Members. Ref. No. CEN/TS 16892:2015 EPD CEN/TS 16892:2015 CEN/TS 16892:2015 (E) 2 Contents Page European foreword 3 1 Scope 4 2 Normative references 4 3 Terms and definitions . 4 4 Technical content of welding procedure specification (
11、WPS) 5 4.1 General 5 4.2 Related to the welding organization 5 4.3 Related to the parent material(s) . 5 4.3.1 Parent material(s) type 5 4.3.2 Parent material(s) dimensions 6 4.4 Common to all welding procedures 6 4.4.1 Joint preparation . 6 4.4.2 Welding process 6 4.4.3 Joint design 6 4.4.4 Welding
12、 position . 6 4.4.5 Ambient temperature 6 4.5 Specific to a welding process 6 4.5.1 Hot gas round nozzle and high speed nozzle welding . 6 4.5.2 Heated tool butt welding 7 4.5.3 Extrusion welding . 7 4.5.4 Solvent socket welding 8 4.5.5 Heated tool wedge welding . 8 4.5.6 Hot gas wedge welding 8 4.5
13、.7 Socket fusion . 8 4.5.8 Electrofusion socket . 9 4.5.9 Electrofusion saddle 9 Annex A (informative) Welding Procedure Specification (WPS) - Hot gas round nozzle and high speed nozzle welding 10 Annex B (informative) Welding Procedure Specification (WPS) - Heated tool butt welding 11 Annex C (info
14、rmative) Welding Procedure Specification (WPS) - Extrusion welding . 12 Annex D (informative) Welding Procedure Specification (WPS) - Solvent socket welding . 13 Annex E (informative) Welding Procedure Specification (WPS) - Heated tool wedge welding . 14 Annex F (informative) Welding Procedure Speci
15、fication (WPS) Hot gas wedge welding . 15 Annex G (informative) Welding Procedure Specification (WPS) Socket fusion welding . 16 Annex H (informative) Welding Procedure Specification (WPS) Electrofusion socket welding 17 Annex I (informative) Welding Procedure Specification (WPS) Electrofusion saddl
16、e welding 18 Bibliography 19 PD CEN/TS 16892:2015 CEN/TS 16892:2015 (E) 3 European foreword This document (CEN/TS 16892:2015) has been prepared by Technical Committee CEN/TC 249 “Plastics”, the secretariat of which is held by NBN. Attention is drawn to the possibility that some of the elements of th
17、is document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to announce this Technical Spe
18、cification: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Sloven
19、ia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. PD CEN/TS 16892:2015 CEN/TS 16892:2015 (E) 4 1 Scope This Technical Specification provides guidance for the minimum content of welding procedure specifications for the following welding processes: hot gas welding: round nozzle, high spee
20、d nozzle, wedge; extrusion welding; heated tool welding: butt, socket, wedge; solvent welding: socket; electrofusion welding: socket, saddle. This Technical Specification applies to the welding of the following products and semi-finished products made of thermoplastic materials: sheet; pipe; fitting
21、s; lining membrane. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document
22、(including any amendments) applies. EN ISO 6947, Welding and allied processes - Welding positions (ISO 6947) 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 welding procedure specified course of action to be followed in making a weld, includi
23、ng the welding process(es), reference to materials, welding consumables, preparation, preheating (if necessary), method and control of welding and necessary equipment to be used 3.2 welding process technique characterized by the method of softening to obtain permanent assembly 3.3 welding procedure
24、specification WPS document that has been qualified and provides the required variables of the welding procedure to ensure repeatability during production welding 3.4 work instruction simplified welding procedure specification (WPS), suitable for direct application PD CEN/TS 16892:2015 CEN/TS 16892:2
25、015 (E) 5 3.5 welding procedure qualification record WPQR record comprising all necessary data needed for qualification of a welding procedure specification 3.6 welding consumable materials consumed in the making of a weld, including filler material 3.7 essential variable welding condition that infl
26、uences the quality of the welded joint and requires qualification 3.8 non essential variable welding condition addressed in the WPS, but not requiring qualification 3.9 parent material parts to be joined by welding 3.10 welding organization organization responsible for the welding production 4 Techn
27、ical content of welding procedure specification (WPS) 4.1 General A Welding Procedure Specification (WPS) shall provide all the necessary information required to make a weld. The minimum information required in a WPS is given in 4.2 to 4.5. Welding procedure specifications cover a certain range for
28、each essential / non-essential variable. A work instruction can be prepared for each specific job as part of detailed production planning. Examples of the WPS format are shown in Annexes A, B, C, D, E, F, G, H, I. The procedure for measuring each variable should be according to agreed specifications
29、. 4.2 Related to the welding organization Identification of the welding organization; WPS number; Welding Procedure Qualification Record (WPQR) number, if applicable; signature of the person responsible for approval, appointed by the welding organization. 4.3 Related to the parent material(s) 4.3.1
30、Parent material(s) type Designation of the material(s) and reference standard(s), if any. An alternative identification shall be used if a reference standard does not exist. PD CEN/TS 16892:2015 CEN/TS 16892:2015 (E) 6 4.3.2 Parent material(s) dimensions Thicknesses (Standard Dimension Ratio (SDR) f
31、or pipes and spigot fittings); nominal diameters (for pipes and fittings). 4.4 Common to all welding procedures 4.4.1 Joint preparation Cutting and surface preparation method (e.g. machining or scraping); initial cleaning (chemical or mechanical); jigging, fixtures, clamping. 4.4.2 Welding process 4
32、.4.3 Joint design Joint and weld type; a sketch of the joint design/configuration and dimensions or reference to standards which provide such information. 4.4.4 Welding position Welding positions (in accordance with EN ISO 6947, where applicable). 4.4.5 Ambient temperature 4.5 Specific to a welding
33、process 4.5.1 Hot gas round nozzle and high speed nozzle welding Initial joint geometry; weld rod/wire cross-section geometry, e.g. round, triangular, designation of the material(s) and reference standard(s), dimensions (size); welding speed; gas type; backing (method and type of backing, backing ma
34、terial and dimensions); nozzle diameter; gas flow rate; gas temperature; torch angle; rod/wire angle; distance between gas nozzle and workpiece (round nozzle welding only); PD CEN/TS 16892:2015 CEN/TS 16892:2015 (E) 7 interpass cleaning; back gouging (method to be used, depth and shape); weld run se
35、quence. 4.5.2 Heated tool butt welding Heater plate temperature; initial bead-up (or alignment) interfacial pressure; initial bead size at end of bead-up (or alignment) time; heat soak (or heating up) interfacial pressure; heat soak (or heating up) time; heater plate removal (dwell or change-over) t
36、ime; time to achieve interfacial fusion jointing pressure (or joining pressure build-up time); fusion jointing (or joining) interfacial pressure; minimum cooling time in the machine under pressure; minimum cooling time out of the machine without pressure. NOTE The pressure on the welding machine nee
37、ds to be calculated from the interfacial pressures and the surface areas of the parts to be welded. 4.5.3 Extrusion welding Initial joint geometry; welding shoe design; hot gas temperature; extrudate temperature; extrudate output; gas type; backing (method and type of backing, backing material and d
38、imensions); gas flow rate; welding speed; cooling time; filler material (material designation, wire or pellet, wire diameter); interpass cleaning; PD CEN/TS 16892:2015 CEN/TS 16892:2015 (E) 8 welding equipment maximum output; weld run sequence. 4.5.4 Solvent socket welding Socket fitting material de
39、signation and standard; cement (production date, expiry date, standard reference, method and type of application, application, curing time); primer (type, production date, method and time of application); pipe chamfering angle and depth; pipe insertion depth; pipe and fitting insertion method (manua
40、l / mechanical, manufacturer and type for mechanical devices). 4.5.5 Heated tool wedge welding Overlap length; heated wedge temperature; welding speed; welding force; heated wedge type; nip roller type. 4.5.6 Hot gas wedge welding Overlap length; hot gas temperature; welding speed; welding force; ni
41、p roller type. 4.5.7 Socket fusion Heated tool temperature; pipe chamfering angle and depth; pipe insertion depth; heating time; changeover time; PD CEN/TS 16892:2015 CEN/TS 16892:2015 (E) 9 cooling time (fixed pipes); cooling time (before joint can be loaded); pipe and fitting insertion method (man
42、ual / machine). 4.5.8 Electrofusion socket Manual or automatic data input; fitting manufacturer; minimum external diameter of the unscraped element (e.g. for electrofusion socket welding, measured at pipe end); insertion depth; voltage; current type (AC/DC); preheating voltage and time (if applicabl
43、e); single or multiple coil fitting; heating time; minimum cooling time (before removing clamps); minimum cooling time out of clamps (before joint can be loaded). 4.5.9 Electrofusion saddle Manual or automatic data input; fitting manufacturer; minimum external diameter of the unscraped pipe measured
44、 at the point of assembly; voltage; current type (AC/DC); single or multiple coil fitting; heating time; cooling time; assembling load method. PD CEN/TS 16892:2015 CEN/TS 16892:2015 (E) 10 Annex A (informative) Welding Procedure Specification (WPS) - Hot gas round nozzle and high speed nozzle weldin
45、g Joint design Welding organization: Welding Procedure Specification No./ Revision: WPQR No./Revision: Parent material Material type / designation: Thickness (mm) / SDR range: Nominal diameter range (mm): Joint preparation Cutting and edge preparation method: Initial cleaning method: Backing (method
46、 and type): Welding process(es): Joint design Joint and weld type: Welding position: Ambient temperature range Filler material Geometry, designation: Welding technique Gas type: Nozzle diameter (mm): Method of interpass cleaning: Method of back gouging / backing: Torch angle () range: Rod / wire ang
47、le () range Distance (mm) between gas nozzle and workpiece (range): Welding parameters Weld run sequence Run Welding process Size (mm) and cross section of filler material Gas flow rate range (l/min) Gas temperature (C) range Welding speed (mm/s) range Welding organization Name: Signature: Date: PD
48、CEN/TS 16892:2015 CEN/TS 16892:2015 (E) 11 Annex B (informative) Welding Procedure Specification (WPS) - Heated tool butt welding Welding organization Welding Procedure Specification No./ Revision: WPQR No./Revision: Parent material Material type / designation: Thickness en (mm) / SDR range: Nominal
49、 diameter dn range(mm): Joint preparation Cutting and edge preparation method: Initial cleaning method: Backing (method and type): Welding equipment type: Manual/semi-automatic/automatic Joint design Joint and weld type: Welding position: Ambient temperature (C) range: Joint design Welding parameters ranges Heater plate Temperature (C) Initial bead- up
