焊接英语请高手过来啊Resistance spot welding is welding technique that

焊接英语
请高手过来啊Resistance spot welding is welding technique that is used for almost all known metals.The actual weld is made at the interface of the parts to be joined.The electrical resistance of the material to be welded causes a localized heating at the interfaces of the metals to be joined.Welding procedures for each type of material must be developed for the most satisfactory results.It is possible that shunt currents flowing through a previously made spot weld will take welding current away from the second second spot weld to be made.This will occur if the two spot welds are too close together,and it will happen with all metals.The following tables and charts are intended as guides for setting up resistance spot welding procedures.The exact time,pressure,and current setting will depend on the specific application and the KVA rating of the resistance spot welding machine employed.Some areas of the tables may not apply to resistance spot welders in the KVA ratings available from this company.