DVS_2208_1新版标准规范

DVS-DEUTSCHER VERBANDWelding of thermoplasticsDirectiveFUR SCHWEISSEN UNDMachines and devices for theDVS2208-1/ERWANDTE VERFAHREN E.V.heated tool welding of pipes,pipeline components and sheets(December 1997)Contents:6.3.6 Safely device6.3.7Stress detectionScope6.4Mechanical requirements2General requirements on the machines65ldentification2.1Clamping devices7Standards and directives2.2Guide elements7.1Standards2.3Device for the preparation of the weld seam72Directives24Controlling and regulating devicesExplanation2.4.1Force controlAppendix:Pattems for test certificates2.4.2Time control2.4.3Print-out of logs25Arrangement of the heated too!1Scope2.6Construction and identification of the machines2.7Working safetyBy means of this directive the processors of semi-finished2.8inspection and maintenanceproducts and the manufacturers of machines shall obtain a3General requirements on the heated toolsgeneral idea of the requirements which are to be made on3.1Fammationdevices and machines for heated tool and electrofusion welding3.2Materialof thermoplastics.On the basis of the indicated characteristics.3.3Condition of surfacethe processor is able to check with which devices or machines he3.4Minimum efficiency of the heated toolcan realize his weld jobs sately and appropriately for the material3.5Minimum range of temperatureinvolved.3.6Precision of temperatureMachines for heated tool butt weldingThe directive refers to the methods and the diflerenl types of4.1Welding machines for pipeswelding with heated tools where the joining areas are heated up4.1.1through direct contact with the heated tool.as described e.g.inCiamping devices4.1.2DVS2207.1,-118nd.15.Guide elements and clamping devices4.1.3 Heated toolsSubject of the directive refers especially to machines for the4.1.4 Device for the preparation of the weld seamwelding of polyolefines (PE,PP and PB)as well as PVDF and4.1.5 Controlling and regulating devices for force,time,tempePVC-Urature and pathIf operating with welding machines for other thermoplastics,it4.1.6 Construction of the machine and safety in operationshould be checked in the single case if there are requirements to4.2Welding machines for sheetsbe foflowed depending on the material involved and on the4力1Clamping devicesmethods which are different to those prescribed in this directive.4.22Guide eiements4.2.3Heated toolsSpecial machines,the complete field of welding foils and lining4.2.4 Controlling and regulating devicesmembranes,the infrared welding technology as well as machines4.2.5Construction of the machine and safety in operationfor high frequency.vibration and friction welding etc.are notMachines for heated tool socket weldingsubject to this directive.5.1Designs5.2Technological variants5.3Welding machines and devices2 General requirements on the machines5.3.1 Heated tools5.3.2 Clampino devicesThe requirements on the machines and devices for heated tool5.3.3Guide elementswelding are complex and bound up with the appropriate weld job.5.3.4